--- a/hotspot/src/cpu/aarch64/vm/interpreter_aarch64.cpp Sat Dec 05 15:17:29 2015 +0100
+++ b/hotspot/src/cpu/aarch64/vm/interpreter_aarch64.cpp Sat Dec 05 17:14:02 2015 +0000
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2014, Red Hat Inc. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
@@ -39,7 +39,6 @@
#include "prims/jvmtiThreadState.hpp"
#include "prims/methodHandles.hpp"
#include "runtime/arguments.hpp"
-#include "runtime/deoptimization.hpp"
#include "runtime/frame.inline.hpp"
#include "runtime/sharedRuntime.hpp"
#include "runtime/stubRoutines.hpp"
@@ -259,20 +258,3 @@
return entry_point;
}
-
-
-void Deoptimization::unwind_callee_save_values(frame* f, vframeArray* vframe_array) {
-
- // This code is sort of the equivalent of C2IAdapter::setup_stack_frame back in
- // the days we had adapter frames. When we deoptimize a situation where a
- // compiled caller calls a compiled caller will have registers it expects
- // to survive the call to the callee. If we deoptimize the callee the only
- // way we can restore these registers is to have the oldest interpreter
- // frame that we create restore these values. That is what this routine
- // will accomplish.
-
- // At the moment we have modified c2 to not have any callee save registers
- // so this problem does not exist and this routine is just a place holder.
-
- assert(f->is_interpreted_frame(), "must be interpreted");
-}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/cpu/aarch64/vm/templateInterpreterGenerator_aarch64.cpp Sat Dec 05 17:14:02 2015 +0000
@@ -0,0 +1,1925 @@
+/*
+ * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, Red Hat Inc. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "asm/macroAssembler.hpp"
+#include "interpreter/bytecodeHistogram.hpp"
+#include "interpreter/interpreter.hpp"
+#include "interpreter/interpreterGenerator.hpp"
+#include "interpreter/interpreterRuntime.hpp"
+#include "interpreter/interp_masm.hpp"
+#include "interpreter/templateTable.hpp"
+#include "interpreter/bytecodeTracer.hpp"
+#include "oops/arrayOop.hpp"
+#include "oops/methodData.hpp"
+#include "oops/method.hpp"
+#include "oops/oop.inline.hpp"
+#include "prims/jvmtiExport.hpp"
+#include "prims/jvmtiThreadState.hpp"
+#include "runtime/arguments.hpp"
+#include "runtime/deoptimization.hpp"
+#include "runtime/frame.inline.hpp"
+#include "runtime/sharedRuntime.hpp"
+#include "runtime/stubRoutines.hpp"
+#include "runtime/synchronizer.hpp"
+#include "runtime/timer.hpp"
+#include "runtime/vframeArray.hpp"
+#include "utilities/debug.hpp"
+#include <sys/types.h>
+
+#ifndef PRODUCT
+#include "oops/method.hpp"
+#endif // !PRODUCT
+
+#ifdef BUILTIN_SIM
+#include "../../../../../../simulator/simulator.hpp"
+#endif
+
+#define __ _masm->
+
+#ifndef CC_INTERP
+
+//-----------------------------------------------------------------------------
+
+extern "C" void entry(CodeBuffer*);
+
+//-----------------------------------------------------------------------------
+
+address TemplateInterpreterGenerator::generate_StackOverflowError_handler() {
+ address entry = __ pc();
+
+#ifdef ASSERT
+ {
+ Label L;
+ __ ldr(rscratch1, Address(rfp,
+ frame::interpreter_frame_monitor_block_top_offset *
+ wordSize));
+ __ mov(rscratch2, sp);
+ __ cmp(rscratch1, rscratch2); // maximal rsp for current rfp (stack
+ // grows negative)
+ __ br(Assembler::HS, L); // check if frame is complete
+ __ stop ("interpreter frame not set up");
+ __ bind(L);
+ }
+#endif // ASSERT
+ // Restore bcp under the assumption that the current frame is still
+ // interpreted
+ __ restore_bcp();
+
+ // expression stack must be empty before entering the VM if an
+ // exception happened
+ __ empty_expression_stack();
+ // throw exception
+ __ call_VM(noreg,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::throw_StackOverflowError));
+ return entry;
+}
+
+address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler(
+ const char* name) {
+ address entry = __ pc();
+ // expression stack must be empty before entering the VM if an
+ // exception happened
+ __ empty_expression_stack();
+ // setup parameters
+ // ??? convention: expect aberrant index in register r1
+ __ movw(c_rarg2, r1);
+ __ mov(c_rarg1, (address)name);
+ __ call_VM(noreg,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::
+ throw_ArrayIndexOutOfBoundsException),
+ c_rarg1, c_rarg2);
+ return entry;
+}
+
+address TemplateInterpreterGenerator::generate_ClassCastException_handler() {
+ address entry = __ pc();
+
+ // object is at TOS
+ __ pop(c_rarg1);
+
+ // expression stack must be empty before entering the VM if an
+ // exception happened
+ __ empty_expression_stack();
+
+ __ call_VM(noreg,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::
+ throw_ClassCastException),
+ c_rarg1);
+ return entry;
+}
+
+address TemplateInterpreterGenerator::generate_exception_handler_common(
+ const char* name, const char* message, bool pass_oop) {
+ assert(!pass_oop || message == NULL, "either oop or message but not both");
+ address entry = __ pc();
+ if (pass_oop) {
+ // object is at TOS
+ __ pop(c_rarg2);
+ }
+ // expression stack must be empty before entering the VM if an
+ // exception happened
+ __ empty_expression_stack();
+ // setup parameters
+ __ lea(c_rarg1, Address((address)name));
+ if (pass_oop) {
+ __ call_VM(r0, CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::
+ create_klass_exception),
+ c_rarg1, c_rarg2);
+ } else {
+ // kind of lame ExternalAddress can't take NULL because
+ // external_word_Relocation will assert.
+ if (message != NULL) {
+ __ lea(c_rarg2, Address((address)message));
+ } else {
+ __ mov(c_rarg2, NULL_WORD);
+ }
+ __ call_VM(r0,
+ CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception),
+ c_rarg1, c_rarg2);
+ }
+ // throw exception
+ __ b(address(Interpreter::throw_exception_entry()));
+ return entry;
+}
+
+address TemplateInterpreterGenerator::generate_continuation_for(TosState state) {
+ address entry = __ pc();
+ // NULL last_sp until next java call
+ __ str(zr, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize));
+ __ dispatch_next(state);
+ return entry;
+}
+
+address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step, size_t index_size) {
+ address entry = __ pc();
+
+ // Restore stack bottom in case i2c adjusted stack
+ __ ldr(esp, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize));
+ // and NULL it as marker that esp is now tos until next java call
+ __ str(zr, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize));
+ __ restore_bcp();
+ __ restore_locals();
+ __ restore_constant_pool_cache();
+ __ get_method(rmethod);
+
+ // Pop N words from the stack
+ __ get_cache_and_index_at_bcp(r1, r2, 1, index_size);
+ __ ldr(r1, Address(r1, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::flags_offset()));
+ __ andr(r1, r1, ConstantPoolCacheEntry::parameter_size_mask);
+
+ __ add(esp, esp, r1, Assembler::LSL, 3);
+
+ // Restore machine SP
+ __ ldr(rscratch1, Address(rmethod, Method::const_offset()));
+ __ ldrh(rscratch1, Address(rscratch1, ConstMethod::max_stack_offset()));
+ __ add(rscratch1, rscratch1, frame::interpreter_frame_monitor_size() + 2);
+ __ ldr(rscratch2,
+ Address(rfp, frame::interpreter_frame_initial_sp_offset * wordSize));
+ __ sub(rscratch1, rscratch2, rscratch1, ext::uxtw, 3);
+ __ andr(sp, rscratch1, -16);
+
+#ifndef PRODUCT
+ // tell the simulator that the method has been reentered
+ if (NotifySimulator) {
+ __ notify(Assembler::method_reentry);
+ }
+#endif
+ __ get_dispatch();
+ __ dispatch_next(state, step);
+
+ return entry;
+}
+
+address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state,
+ int step) {
+ address entry = __ pc();
+ __ restore_bcp();
+ __ restore_locals();
+ __ restore_constant_pool_cache();
+ __ get_method(rmethod);
+
+ // handle exceptions
+ {
+ Label L;
+ __ ldr(rscratch1, Address(rthread, Thread::pending_exception_offset()));
+ __ cbz(rscratch1, L);
+ __ call_VM(noreg,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::throw_pending_exception));
+ __ should_not_reach_here();
+ __ bind(L);
+ }
+
+ __ get_dispatch();
+
+ // Calculate stack limit
+ __ ldr(rscratch1, Address(rmethod, Method::const_offset()));
+ __ ldrh(rscratch1, Address(rscratch1, ConstMethod::max_stack_offset()));
+ __ add(rscratch1, rscratch1, frame::interpreter_frame_monitor_size() + 2);
+ __ ldr(rscratch2,
+ Address(rfp, frame::interpreter_frame_initial_sp_offset * wordSize));
+ __ sub(rscratch1, rscratch2, rscratch1, ext::uxtx, 3);
+ __ andr(sp, rscratch1, -16);
+
+ // Restore expression stack pointer
+ __ ldr(esp, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize));
+ // NULL last_sp until next java call
+ __ str(zr, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize));
+
+ __ dispatch_next(state, step);
+ return entry;
+}
+
+address TemplateInterpreterGenerator::generate_result_handler_for(
+ BasicType type) {
+ address entry = __ pc();
+ switch (type) {
+ case T_BOOLEAN: __ uxtb(r0, r0); break;
+ case T_CHAR : __ uxth(r0, r0); break;
+ case T_BYTE : __ sxtb(r0, r0); break;
+ case T_SHORT : __ sxth(r0, r0); break;
+ case T_INT : __ uxtw(r0, r0); break; // FIXME: We almost certainly don't need this
+ case T_LONG : /* nothing to do */ break;
+ case T_VOID : /* nothing to do */ break;
+ case T_FLOAT : /* nothing to do */ break;
+ case T_DOUBLE : /* nothing to do */ break;
+ case T_OBJECT :
+ // retrieve result from frame
+ __ ldr(r0, Address(rfp, frame::interpreter_frame_oop_temp_offset*wordSize));
+ // and verify it
+ __ verify_oop(r0);
+ break;
+ default : ShouldNotReachHere();
+ }
+ __ ret(lr); // return from result handler
+ return entry;
+}
+
+address TemplateInterpreterGenerator::generate_safept_entry_for(
+ TosState state,
+ address runtime_entry) {
+ address entry = __ pc();
+ __ push(state);
+ __ call_VM(noreg, runtime_entry);
+ __ membar(Assembler::AnyAny);
+ __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos));
+ return entry;
+}
+
+// Helpers for commoning out cases in the various type of method entries.
+//
+
+
+// increment invocation count & check for overflow
+//
+// Note: checking for negative value instead of overflow
+// so we have a 'sticky' overflow test
+//
+// rmethod: method
+//
+void InterpreterGenerator::generate_counter_incr(
+ Label* overflow,
+ Label* profile_method,
+ Label* profile_method_continue) {
+ Label done;
+ // Note: In tiered we increment either counters in Method* or in MDO depending if we're profiling or not.
+ if (TieredCompilation) {
+ int increment = InvocationCounter::count_increment;
+ Label no_mdo;
+ if (ProfileInterpreter) {
+ // Are we profiling?
+ __ ldr(r0, Address(rmethod, Method::method_data_offset()));
+ __ cbz(r0, no_mdo);
+ // Increment counter in the MDO
+ const Address mdo_invocation_counter(r0, in_bytes(MethodData::invocation_counter_offset()) +
+ in_bytes(InvocationCounter::counter_offset()));
+ const Address mask(r0, in_bytes(MethodData::invoke_mask_offset()));
+ __ increment_mask_and_jump(mdo_invocation_counter, increment, mask, rscratch1, rscratch2, false, Assembler::EQ, overflow);
+ __ b(done);
+ }
+ __ bind(no_mdo);
+ // Increment counter in MethodCounters
+ const Address invocation_counter(rscratch2,
+ MethodCounters::invocation_counter_offset() +
+ InvocationCounter::counter_offset());
+ __ get_method_counters(rmethod, rscratch2, done);
+ const Address mask(rscratch2, in_bytes(MethodCounters::invoke_mask_offset()));
+ __ increment_mask_and_jump(invocation_counter, increment, mask, rscratch1, r1, false, Assembler::EQ, overflow);
+ __ bind(done);
+ } else { // not TieredCompilation
+ const Address backedge_counter(rscratch2,
+ MethodCounters::backedge_counter_offset() +
+ InvocationCounter::counter_offset());
+ const Address invocation_counter(rscratch2,
+ MethodCounters::invocation_counter_offset() +
+ InvocationCounter::counter_offset());
+
+ __ get_method_counters(rmethod, rscratch2, done);
+
+ if (ProfileInterpreter) { // %%% Merge this into MethodData*
+ __ ldrw(r1, Address(rscratch2, MethodCounters::interpreter_invocation_counter_offset()));
+ __ addw(r1, r1, 1);
+ __ strw(r1, Address(rscratch2, MethodCounters::interpreter_invocation_counter_offset()));
+ }
+ // Update standard invocation counters
+ __ ldrw(r1, invocation_counter);
+ __ ldrw(r0, backedge_counter);
+
+ __ addw(r1, r1, InvocationCounter::count_increment);
+ __ andw(r0, r0, InvocationCounter::count_mask_value);
+
+ __ strw(r1, invocation_counter);
+ __ addw(r0, r0, r1); // add both counters
+
+ // profile_method is non-null only for interpreted method so
+ // profile_method != NULL == !native_call
+
+ if (ProfileInterpreter && profile_method != NULL) {
+ // Test to see if we should create a method data oop
+ __ ldr(rscratch2, Address(rmethod, Method::method_counters_offset()));
+ __ ldrw(rscratch2, Address(rscratch2, in_bytes(MethodCounters::interpreter_profile_limit_offset())));
+ __ cmpw(r0, rscratch2);
+ __ br(Assembler::LT, *profile_method_continue);
+
+ // if no method data exists, go to profile_method
+ __ test_method_data_pointer(r0, *profile_method);
+ }
+
+ {
+ __ ldr(rscratch2, Address(rmethod, Method::method_counters_offset()));
+ __ ldrw(rscratch2, Address(rscratch2, in_bytes(MethodCounters::interpreter_invocation_limit_offset())));
+ __ cmpw(r0, rscratch2);
+ __ br(Assembler::HS, *overflow);
+ }
+ __ bind(done);
+ }
+}
+
+void InterpreterGenerator::generate_counter_overflow(Label* do_continue) {
+
+ // Asm interpreter on entry
+ // On return (i.e. jump to entry_point) [ back to invocation of interpreter ]
+ // Everything as it was on entry
+
+ // InterpreterRuntime::frequency_counter_overflow takes two
+ // arguments, the first (thread) is passed by call_VM, the second
+ // indicates if the counter overflow occurs at a backwards branch
+ // (NULL bcp). We pass zero for it. The call returns the address
+ // of the verified entry point for the method or NULL if the
+ // compilation did not complete (either went background or bailed
+ // out).
+ __ mov(c_rarg1, 0);
+ __ call_VM(noreg,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::frequency_counter_overflow),
+ c_rarg1);
+
+ __ b(*do_continue);
+}
+
+// See if we've got enough room on the stack for locals plus overhead.
+// The expression stack grows down incrementally, so the normal guard
+// page mechanism will work for that.
+//
+// NOTE: Since the additional locals are also always pushed (wasn't
+// obvious in generate_method_entry) so the guard should work for them
+// too.
+//
+// Args:
+// r3: number of additional locals this frame needs (what we must check)
+// rmethod: Method*
+//
+// Kills:
+// r0
+void InterpreterGenerator::generate_stack_overflow_check(void) {
+
+ // monitor entry size: see picture of stack set
+ // (generate_method_entry) and frame_amd64.hpp
+ const int entry_size = frame::interpreter_frame_monitor_size() * wordSize;
+
+ // total overhead size: entry_size + (saved rbp through expr stack
+ // bottom). be sure to change this if you add/subtract anything
+ // to/from the overhead area
+ const int overhead_size =
+ -(frame::interpreter_frame_initial_sp_offset * wordSize) + entry_size;
+
+ const int page_size = os::vm_page_size();
+
+ Label after_frame_check;
+
+ // see if the frame is greater than one page in size. If so,
+ // then we need to verify there is enough stack space remaining
+ // for the additional locals.
+ //
+ // Note that we use SUBS rather than CMP here because the immediate
+ // field of this instruction may overflow. SUBS can cope with this
+ // because it is a macro that will expand to some number of MOV
+ // instructions and a register operation.
+ __ subs(rscratch1, r3, (page_size - overhead_size) / Interpreter::stackElementSize);
+ __ br(Assembler::LS, after_frame_check);
+
+ // compute rsp as if this were going to be the last frame on
+ // the stack before the red zone
+
+ const Address stack_base(rthread, Thread::stack_base_offset());
+ const Address stack_size(rthread, Thread::stack_size_offset());
+
+ // locals + overhead, in bytes
+ __ mov(r0, overhead_size);
+ __ add(r0, r0, r3, Assembler::LSL, Interpreter::logStackElementSize); // 2 slots per parameter.
+
+ __ ldr(rscratch1, stack_base);
+ __ ldr(rscratch2, stack_size);
+
+#ifdef ASSERT
+ Label stack_base_okay, stack_size_okay;
+ // verify that thread stack base is non-zero
+ __ cbnz(rscratch1, stack_base_okay);
+ __ stop("stack base is zero");
+ __ bind(stack_base_okay);
+ // verify that thread stack size is non-zero
+ __ cbnz(rscratch2, stack_size_okay);
+ __ stop("stack size is zero");
+ __ bind(stack_size_okay);
+#endif
+
+ // Add stack base to locals and subtract stack size
+ __ sub(rscratch1, rscratch1, rscratch2); // Stack limit
+ __ add(r0, r0, rscratch1);
+
+ // Use the maximum number of pages we might bang.
+ const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages :
+ (StackRedPages+StackYellowPages);
+
+ // add in the red and yellow zone sizes
+ __ add(r0, r0, max_pages * page_size * 2);
+
+ // check against the current stack bottom
+ __ cmp(sp, r0);
+ __ br(Assembler::HI, after_frame_check);
+
+ // Remove the incoming args, peeling the machine SP back to where it
+ // was in the caller. This is not strictly necessary, but unless we
+ // do so the stack frame may have a garbage FP; this ensures a
+ // correct call stack that we can always unwind. The ANDR should be
+ // unnecessary because the sender SP in r13 is always aligned, but
+ // it doesn't hurt.
+ __ andr(sp, r13, -16);
+
+ // Note: the restored frame is not necessarily interpreted.
+ // Use the shared runtime version of the StackOverflowError.
+ assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "stub not yet generated");
+ __ far_jump(RuntimeAddress(StubRoutines::throw_StackOverflowError_entry()));
+
+ // all done with frame size check
+ __ bind(after_frame_check);
+}
+
+// Allocate monitor and lock method (asm interpreter)
+//
+// Args:
+// rmethod: Method*
+// rlocals: locals
+//
+// Kills:
+// r0
+// c_rarg0, c_rarg1, c_rarg2, c_rarg3, ...(param regs)
+// rscratch1, rscratch2 (scratch regs)
+void TemplateInterpreterGenerator::lock_method() {
+ // synchronize method
+ const Address access_flags(rmethod, Method::access_flags_offset());
+ const Address monitor_block_top(
+ rfp,
+ frame::interpreter_frame_monitor_block_top_offset * wordSize);
+ const int entry_size = frame::interpreter_frame_monitor_size() * wordSize;
+
+#ifdef ASSERT
+ {
+ Label L;
+ __ ldrw(r0, access_flags);
+ __ tst(r0, JVM_ACC_SYNCHRONIZED);
+ __ br(Assembler::NE, L);
+ __ stop("method doesn't need synchronization");
+ __ bind(L);
+ }
+#endif // ASSERT
+
+ // get synchronization object
+ {
+ const int mirror_offset = in_bytes(Klass::java_mirror_offset());
+ Label done;
+ __ ldrw(r0, access_flags);
+ __ tst(r0, JVM_ACC_STATIC);
+ // get receiver (assume this is frequent case)
+ __ ldr(r0, Address(rlocals, Interpreter::local_offset_in_bytes(0)));
+ __ br(Assembler::EQ, done);
+ __ ldr(r0, Address(rmethod, Method::const_offset()));
+ __ ldr(r0, Address(r0, ConstMethod::constants_offset()));
+ __ ldr(r0, Address(r0,
+ ConstantPool::pool_holder_offset_in_bytes()));
+ __ ldr(r0, Address(r0, mirror_offset));
+
+#ifdef ASSERT
+ {
+ Label L;
+ __ cbnz(r0, L);
+ __ stop("synchronization object is NULL");
+ __ bind(L);
+ }
+#endif // ASSERT
+
+ __ bind(done);
+ }
+
+ // add space for monitor & lock
+ __ sub(sp, sp, entry_size); // add space for a monitor entry
+ __ sub(esp, esp, entry_size);
+ __ mov(rscratch1, esp);
+ __ str(rscratch1, monitor_block_top); // set new monitor block top
+ // store object
+ __ str(r0, Address(esp, BasicObjectLock::obj_offset_in_bytes()));
+ __ mov(c_rarg1, esp); // object address
+ __ lock_object(c_rarg1);
+}
+
+// Generate a fixed interpreter frame. This is identical setup for
+// interpreted methods and for native methods hence the shared code.
+//
+// Args:
+// lr: return address
+// rmethod: Method*
+// rlocals: pointer to locals
+// rcpool: cp cache
+// stack_pointer: previous sp
+void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) {
+ // initialize fixed part of activation frame
+ if (native_call) {
+ __ sub(esp, sp, 12 * wordSize);
+ __ mov(rbcp, zr);
+ __ stp(esp, zr, Address(__ pre(sp, -12 * wordSize)));
+ // add 2 zero-initialized slots for native calls
+ __ stp(zr, zr, Address(sp, 10 * wordSize));
+ } else {
+ __ sub(esp, sp, 10 * wordSize);
+ __ ldr(rscratch1, Address(rmethod, Method::const_offset())); // get ConstMethod
+ __ add(rbcp, rscratch1, in_bytes(ConstMethod::codes_offset())); // get codebase
+ __ stp(esp, rbcp, Address(__ pre(sp, -10 * wordSize)));
+ }
+
+ if (ProfileInterpreter) {
+ Label method_data_continue;
+ __ ldr(rscratch1, Address(rmethod, Method::method_data_offset()));
+ __ cbz(rscratch1, method_data_continue);
+ __ lea(rscratch1, Address(rscratch1, in_bytes(MethodData::data_offset())));
+ __ bind(method_data_continue);
+ __ stp(rscratch1, rmethod, Address(sp, 4 * wordSize)); // save Method* and mdp (method data pointer)
+ } else {
+ __ stp(zr, rmethod, Address(sp, 4 * wordSize)); // save Method* (no mdp)
+ }
+
+ __ ldr(rcpool, Address(rmethod, Method::const_offset()));
+ __ ldr(rcpool, Address(rcpool, ConstMethod::constants_offset()));
+ __ ldr(rcpool, Address(rcpool, ConstantPool::cache_offset_in_bytes()));
+ __ stp(rlocals, rcpool, Address(sp, 2 * wordSize));
+
+ __ stp(rfp, lr, Address(sp, 8 * wordSize));
+ __ lea(rfp, Address(sp, 8 * wordSize));
+
+ // set sender sp
+ // leave last_sp as null
+ __ stp(zr, r13, Address(sp, 6 * wordSize));
+
+ // Move SP out of the way
+ if (! native_call) {
+ __ ldr(rscratch1, Address(rmethod, Method::const_offset()));
+ __ ldrh(rscratch1, Address(rscratch1, ConstMethod::max_stack_offset()));
+ __ add(rscratch1, rscratch1, frame::interpreter_frame_monitor_size() + 2);
+ __ sub(rscratch1, sp, rscratch1, ext::uxtw, 3);
+ __ andr(sp, rscratch1, -16);
+ }
+}
+
+// End of helpers
+
+// Various method entries
+//------------------------------------------------------------------------------------------------------------------------
+//
+//
+
+// Method entry for java.lang.ref.Reference.get.
+address InterpreterGenerator::generate_Reference_get_entry(void) {
+#if INCLUDE_ALL_GCS
+ // Code: _aload_0, _getfield, _areturn
+ // parameter size = 1
+ //
+ // The code that gets generated by this routine is split into 2 parts:
+ // 1. The "intrinsified" code for G1 (or any SATB based GC),
+ // 2. The slow path - which is an expansion of the regular method entry.
+ //
+ // Notes:-
+ // * In the G1 code we do not check whether we need to block for
+ // a safepoint. If G1 is enabled then we must execute the specialized
+ // code for Reference.get (except when the Reference object is null)
+ // so that we can log the value in the referent field with an SATB
+ // update buffer.
+ // If the code for the getfield template is modified so that the
+ // G1 pre-barrier code is executed when the current method is
+ // Reference.get() then going through the normal method entry
+ // will be fine.
+ // * The G1 code can, however, check the receiver object (the instance
+ // of java.lang.Reference) and jump to the slow path if null. If the
+ // Reference object is null then we obviously cannot fetch the referent
+ // and so we don't need to call the G1 pre-barrier. Thus we can use the
+ // regular method entry code to generate the NPE.
+ //
+ // This code is based on generate_accessor_enty.
+ //
+ // rmethod: Method*
+ // r13: senderSP must preserve for slow path, set SP to it on fast path
+
+ address entry = __ pc();
+
+ const int referent_offset = java_lang_ref_Reference::referent_offset;
+ guarantee(referent_offset > 0, "referent offset not initialized");
+
+ if (UseG1GC) {
+ Label slow_path;
+ const Register local_0 = c_rarg0;
+ // Check if local 0 != NULL
+ // If the receiver is null then it is OK to jump to the slow path.
+ __ ldr(local_0, Address(esp, 0));
+ __ cbz(local_0, slow_path);
+
+
+ // Load the value of the referent field.
+ const Address field_address(local_0, referent_offset);
+ __ load_heap_oop(local_0, field_address);
+
+ // Generate the G1 pre-barrier code to log the value of
+ // the referent field in an SATB buffer.
+ __ enter(); // g1_write may call runtime
+ __ g1_write_barrier_pre(noreg /* obj */,
+ local_0 /* pre_val */,
+ rthread /* thread */,
+ rscratch2 /* tmp */,
+ true /* tosca_live */,
+ true /* expand_call */);
+ __ leave();
+ // areturn
+ __ andr(sp, r13, -16); // done with stack
+ __ ret(lr);
+
+ // generate a vanilla interpreter entry as the slow path
+ __ bind(slow_path);
+ __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::zerolocals));
+ return entry;
+ }
+#endif // INCLUDE_ALL_GCS
+
+ // If G1 is not enabled then attempt to go through the accessor entry point
+ // Reference.get is an accessor
+ return generate_accessor_entry();
+}
+
+/**
+ * Method entry for static native methods:
+ * int java.util.zip.CRC32.update(int crc, int b)
+ */
+address InterpreterGenerator::generate_CRC32_update_entry() {
+ if (UseCRC32Intrinsics) {
+ address entry = __ pc();
+
+ // rmethod: Method*
+ // r13: senderSP must preserved for slow path
+ // esp: args
+
+ Label slow_path;
+ // If we need a safepoint check, generate full interpreter entry.
+ ExternalAddress state(SafepointSynchronize::address_of_state());
+ unsigned long offset;
+ __ adrp(rscratch1, ExternalAddress(SafepointSynchronize::address_of_state()), offset);
+ __ ldrw(rscratch1, Address(rscratch1, offset));
+ assert(SafepointSynchronize::_not_synchronized == 0, "rewrite this code");
+ __ cbnz(rscratch1, slow_path);
+
+ // We don't generate local frame and don't align stack because
+ // we call stub code and there is no safepoint on this path.
+
+ // Load parameters
+ const Register crc = c_rarg0; // crc
+ const Register val = c_rarg1; // source java byte value
+ const Register tbl = c_rarg2; // scratch
+
+ // Arguments are reversed on java expression stack
+ __ ldrw(val, Address(esp, 0)); // byte value
+ __ ldrw(crc, Address(esp, wordSize)); // Initial CRC
+
+ __ adrp(tbl, ExternalAddress(StubRoutines::crc_table_addr()), offset);
+ __ add(tbl, tbl, offset);
+
+ __ ornw(crc, zr, crc); // ~crc
+ __ update_byte_crc32(crc, val, tbl);
+ __ ornw(crc, zr, crc); // ~crc
+
+ // result in c_rarg0
+
+ __ andr(sp, r13, -16);
+ __ ret(lr);
+
+ // generate a vanilla native entry as the slow path
+ __ bind(slow_path);
+ __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::native));
+ return entry;
+ }
+ return NULL;
+}
+
+/**
+ * Method entry for static native methods:
+ * int java.util.zip.CRC32.updateBytes(int crc, byte[] b, int off, int len)
+ * int java.util.zip.CRC32.updateByteBuffer(int crc, long buf, int off, int len)
+ */
+address InterpreterGenerator::generate_CRC32_updateBytes_entry(AbstractInterpreter::MethodKind kind) {
+ if (UseCRC32Intrinsics) {
+ address entry = __ pc();
+
+ // rmethod,: Method*
+ // r13: senderSP must preserved for slow path
+
+ Label slow_path;
+ // If we need a safepoint check, generate full interpreter entry.
+ ExternalAddress state(SafepointSynchronize::address_of_state());
+ unsigned long offset;
+ __ adrp(rscratch1, ExternalAddress(SafepointSynchronize::address_of_state()), offset);
+ __ ldrw(rscratch1, Address(rscratch1, offset));
+ assert(SafepointSynchronize::_not_synchronized == 0, "rewrite this code");
+ __ cbnz(rscratch1, slow_path);
+
+ // We don't generate local frame and don't align stack because
+ // we call stub code and there is no safepoint on this path.
+
+ // Load parameters
+ const Register crc = c_rarg0; // crc
+ const Register buf = c_rarg1; // source java byte array address
+ const Register len = c_rarg2; // length
+ const Register off = len; // offset (never overlaps with 'len')
+
+ // Arguments are reversed on java expression stack
+ // Calculate address of start element
+ if (kind == Interpreter::java_util_zip_CRC32_updateByteBuffer) {
+ __ ldr(buf, Address(esp, 2*wordSize)); // long buf
+ __ ldrw(off, Address(esp, wordSize)); // offset
+ __ add(buf, buf, off); // + offset
+ __ ldrw(crc, Address(esp, 4*wordSize)); // Initial CRC
+ } else {
+ __ ldr(buf, Address(esp, 2*wordSize)); // byte[] array
+ __ add(buf, buf, arrayOopDesc::base_offset_in_bytes(T_BYTE)); // + header size
+ __ ldrw(off, Address(esp, wordSize)); // offset
+ __ add(buf, buf, off); // + offset
+ __ ldrw(crc, Address(esp, 3*wordSize)); // Initial CRC
+ }
+ // Can now load 'len' since we're finished with 'off'
+ __ ldrw(len, Address(esp, 0x0)); // Length
+
+ __ andr(sp, r13, -16); // Restore the caller's SP
+
+ // We are frameless so we can just jump to the stub.
+ __ b(CAST_FROM_FN_PTR(address, StubRoutines::updateBytesCRC32()));
+
+ // generate a vanilla native entry as the slow path
+ __ bind(slow_path);
+ __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::native));
+ return entry;
+ }
+ return NULL;
+}
+
+void InterpreterGenerator::bang_stack_shadow_pages(bool native_call) {
+ // Bang each page in the shadow zone. We can't assume it's been done for
+ // an interpreter frame with greater than a page of locals, so each page
+ // needs to be checked. Only true for non-native.
+ if (UseStackBanging) {
+ const int start_page = native_call ? StackShadowPages : 1;
+ const int page_size = os::vm_page_size();
+ for (int pages = start_page; pages <= StackShadowPages ; pages++) {
+ __ sub(rscratch2, sp, pages*page_size);
+ __ str(zr, Address(rscratch2));
+ }
+ }
+}
+
+
+// Interpreter stub for calling a native method. (asm interpreter)
+// This sets up a somewhat different looking stack for calling the
+// native method than the typical interpreter frame setup.
+address InterpreterGenerator::generate_native_entry(bool synchronized) {
+ // determine code generation flags
+ bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods;
+
+ // r1: Method*
+ // rscratch1: sender sp
+
+ address entry_point = __ pc();
+
+ const Address constMethod (rmethod, Method::const_offset());
+ const Address access_flags (rmethod, Method::access_flags_offset());
+ const Address size_of_parameters(r2, ConstMethod::
+ size_of_parameters_offset());
+
+ // get parameter size (always needed)
+ __ ldr(r2, constMethod);
+ __ load_unsigned_short(r2, size_of_parameters);
+
+ // native calls don't need the stack size check since they have no
+ // expression stack and the arguments are already on the stack and
+ // we only add a handful of words to the stack
+
+ // rmethod: Method*
+ // r2: size of parameters
+ // rscratch1: sender sp
+
+ // for natives the size of locals is zero
+
+ // compute beginning of parameters (rlocals)
+ __ add(rlocals, esp, r2, ext::uxtx, 3);
+ __ add(rlocals, rlocals, -wordSize);
+
+ // Pull SP back to minimum size: this avoids holes in the stack
+ __ andr(sp, esp, -16);
+
+ // initialize fixed part of activation frame
+ generate_fixed_frame(true);
+#ifndef PRODUCT
+ // tell the simulator that a method has been entered
+ if (NotifySimulator) {
+ __ notify(Assembler::method_entry);
+ }
+#endif
+
+ // make sure method is native & not abstract
+#ifdef ASSERT
+ __ ldrw(r0, access_flags);
+ {
+ Label L;
+ __ tst(r0, JVM_ACC_NATIVE);
+ __ br(Assembler::NE, L);
+ __ stop("tried to execute non-native method as native");
+ __ bind(L);
+ }
+ {
+ Label L;
+ __ tst(r0, JVM_ACC_ABSTRACT);
+ __ br(Assembler::EQ, L);
+ __ stop("tried to execute abstract method in interpreter");
+ __ bind(L);
+ }
+#endif
+
+ // Since at this point in the method invocation the exception
+ // handler would try to exit the monitor of synchronized methods
+ // which hasn't been entered yet, we set the thread local variable
+ // _do_not_unlock_if_synchronized to true. The remove_activation
+ // will check this flag.
+
+ const Address do_not_unlock_if_synchronized(rthread,
+ in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()));
+ __ mov(rscratch2, true);
+ __ strb(rscratch2, do_not_unlock_if_synchronized);
+
+ // increment invocation count & check for overflow
+ Label invocation_counter_overflow;
+ if (inc_counter) {
+ generate_counter_incr(&invocation_counter_overflow, NULL, NULL);
+ }
+
+ Label continue_after_compile;
+ __ bind(continue_after_compile);
+
+ bang_stack_shadow_pages(true);
+
+ // reset the _do_not_unlock_if_synchronized flag
+ __ strb(zr, do_not_unlock_if_synchronized);
+
+ // check for synchronized methods
+ // Must happen AFTER invocation_counter check and stack overflow check,
+ // so method is not locked if overflows.
+ if (synchronized) {
+ lock_method();
+ } else {
+ // no synchronization necessary
+#ifdef ASSERT
+ {
+ Label L;
+ __ ldrw(r0, access_flags);
+ __ tst(r0, JVM_ACC_SYNCHRONIZED);
+ __ br(Assembler::EQ, L);
+ __ stop("method needs synchronization");
+ __ bind(L);
+ }
+#endif
+ }
+
+ // start execution
+#ifdef ASSERT
+ {
+ Label L;
+ const Address monitor_block_top(rfp,
+ frame::interpreter_frame_monitor_block_top_offset * wordSize);
+ __ ldr(rscratch1, monitor_block_top);
+ __ cmp(esp, rscratch1);
+ __ br(Assembler::EQ, L);
+ __ stop("broken stack frame setup in interpreter");
+ __ bind(L);
+ }
+#endif
+
+ // jvmti support
+ __ notify_method_entry();
+
+ // work registers
+ const Register t = r17;
+ const Register result_handler = r19;
+
+ // allocate space for parameters
+ __ ldr(t, Address(rmethod, Method::const_offset()));
+ __ load_unsigned_short(t, Address(t, ConstMethod::size_of_parameters_offset()));
+
+ __ sub(rscratch1, esp, t, ext::uxtx, Interpreter::logStackElementSize);
+ __ andr(sp, rscratch1, -16);
+ __ mov(esp, rscratch1);
+
+ // get signature handler
+ {
+ Label L;
+ __ ldr(t, Address(rmethod, Method::signature_handler_offset()));
+ __ cbnz(t, L);
+ __ call_VM(noreg,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::prepare_native_call),
+ rmethod);
+ __ ldr(t, Address(rmethod, Method::signature_handler_offset()));
+ __ bind(L);
+ }
+
+ // call signature handler
+ assert(InterpreterRuntime::SignatureHandlerGenerator::from() == rlocals,
+ "adjust this code");
+ assert(InterpreterRuntime::SignatureHandlerGenerator::to() == sp,
+ "adjust this code");
+ assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == rscratch1,
+ "adjust this code");
+
+ // The generated handlers do not touch rmethod (the method).
+ // However, large signatures cannot be cached and are generated
+ // each time here. The slow-path generator can do a GC on return,
+ // so we must reload it after the call.
+ __ blr(t);
+ __ get_method(rmethod); // slow path can do a GC, reload rmethod
+
+
+ // result handler is in r0
+ // set result handler
+ __ mov(result_handler, r0);
+ // pass mirror handle if static call
+ {
+ Label L;
+ const int mirror_offset = in_bytes(Klass::java_mirror_offset());
+ __ ldrw(t, Address(rmethod, Method::access_flags_offset()));
+ __ tst(t, JVM_ACC_STATIC);
+ __ br(Assembler::EQ, L);
+ // get mirror
+ __ ldr(t, Address(rmethod, Method::const_offset()));
+ __ ldr(t, Address(t, ConstMethod::constants_offset()));
+ __ ldr(t, Address(t, ConstantPool::pool_holder_offset_in_bytes()));
+ __ ldr(t, Address(t, mirror_offset));
+ // copy mirror into activation frame
+ __ str(t, Address(rfp, frame::interpreter_frame_oop_temp_offset * wordSize));
+ // pass handle to mirror
+ __ add(c_rarg1, rfp, frame::interpreter_frame_oop_temp_offset * wordSize);
+ __ bind(L);
+ }
+
+ // get native function entry point in r10
+ {
+ Label L;
+ __ ldr(r10, Address(rmethod, Method::native_function_offset()));
+ address unsatisfied = (SharedRuntime::native_method_throw_unsatisfied_link_error_entry());
+ __ mov(rscratch2, unsatisfied);
+ __ ldr(rscratch2, rscratch2);
+ __ cmp(r10, rscratch2);
+ __ br(Assembler::NE, L);
+ __ call_VM(noreg,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::prepare_native_call),
+ rmethod);
+ __ get_method(rmethod);
+ __ ldr(r10, Address(rmethod, Method::native_function_offset()));
+ __ bind(L);
+ }
+
+ // pass JNIEnv
+ __ add(c_rarg0, rthread, in_bytes(JavaThread::jni_environment_offset()));
+
+ // It is enough that the pc() points into the right code
+ // segment. It does not have to be the correct return pc.
+ __ set_last_Java_frame(esp, rfp, (address)NULL, rscratch1);
+
+ // change thread state
+#ifdef ASSERT
+ {
+ Label L;
+ __ ldrw(t, Address(rthread, JavaThread::thread_state_offset()));
+ __ cmp(t, _thread_in_Java);
+ __ br(Assembler::EQ, L);
+ __ stop("Wrong thread state in native stub");
+ __ bind(L);
+ }
+#endif
+
+ // Change state to native
+ __ mov(rscratch1, _thread_in_native);
+ __ lea(rscratch2, Address(rthread, JavaThread::thread_state_offset()));
+ __ stlrw(rscratch1, rscratch2);
+
+ // Call the native method.
+ __ blrt(r10, rscratch1);
+ __ maybe_isb();
+ __ get_method(rmethod);
+ // result potentially in r0 or v0
+
+ // make room for the pushes we're about to do
+ __ sub(rscratch1, esp, 4 * wordSize);
+ __ andr(sp, rscratch1, -16);
+
+ // NOTE: The order of these pushes is known to frame::interpreter_frame_result
+ // in order to extract the result of a method call. If the order of these
+ // pushes change or anything else is added to the stack then the code in
+ // interpreter_frame_result must also change.
+ __ push(dtos);
+ __ push(ltos);
+
+ // change thread state
+ __ mov(rscratch1, _thread_in_native_trans);
+ __ lea(rscratch2, Address(rthread, JavaThread::thread_state_offset()));
+ __ stlrw(rscratch1, rscratch2);
+
+ if (os::is_MP()) {
+ if (UseMembar) {
+ // Force this write out before the read below
+ __ dsb(Assembler::SY);
+ } else {
+ // Write serialization page so VM thread can do a pseudo remote membar.
+ // We use the current thread pointer to calculate a thread specific
+ // offset to write to within the page. This minimizes bus traffic
+ // due to cache line collision.
+ __ serialize_memory(rthread, rscratch2);
+ }
+ }
+
+ // check for safepoint operation in progress and/or pending suspend requests
+ {
+ Label Continue;
+ {
+ unsigned long offset;
+ __ adrp(rscratch2, SafepointSynchronize::address_of_state(), offset);
+ __ ldrw(rscratch2, Address(rscratch2, offset));
+ }
+ assert(SafepointSynchronize::_not_synchronized == 0,
+ "SafepointSynchronize::_not_synchronized");
+ Label L;
+ __ cbnz(rscratch2, L);
+ __ ldrw(rscratch2, Address(rthread, JavaThread::suspend_flags_offset()));
+ __ cbz(rscratch2, Continue);
+ __ bind(L);
+
+ // Don't use call_VM as it will see a possible pending exception
+ // and forward it and never return here preventing us from
+ // clearing _last_native_pc down below. So we do a runtime call by
+ // hand.
+ //
+ __ mov(c_rarg0, rthread);
+ __ mov(rscratch2, CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans));
+ __ blrt(rscratch2, 1, 0, 0);
+ __ maybe_isb();
+ __ get_method(rmethod);
+ __ reinit_heapbase();
+ __ bind(Continue);
+ }
+
+ // change thread state
+ __ mov(rscratch1, _thread_in_Java);
+ __ lea(rscratch2, Address(rthread, JavaThread::thread_state_offset()));
+ __ stlrw(rscratch1, rscratch2);
+
+ // reset_last_Java_frame
+ __ reset_last_Java_frame(true, true);
+
+ // reset handle block
+ __ ldr(t, Address(rthread, JavaThread::active_handles_offset()));
+ __ str(zr, Address(t, JNIHandleBlock::top_offset_in_bytes()));
+
+ // If result is an oop unbox and store it in frame where gc will see it
+ // and result handler will pick it up
+
+ {
+ Label no_oop, store_result;
+ __ adr(t, ExternalAddress(AbstractInterpreter::result_handler(T_OBJECT)));
+ __ cmp(t, result_handler);
+ __ br(Assembler::NE, no_oop);
+ // retrieve result
+ __ pop(ltos);
+ __ cbz(r0, store_result);
+ __ ldr(r0, Address(r0, 0));
+ __ bind(store_result);
+ __ str(r0, Address(rfp, frame::interpreter_frame_oop_temp_offset*wordSize));
+ // keep stack depth as expected by pushing oop which will eventually be discarded
+ __ push(ltos);
+ __ bind(no_oop);
+ }
+
+ {
+ Label no_reguard;
+ __ lea(rscratch1, Address(rthread, in_bytes(JavaThread::stack_guard_state_offset())));
+ __ ldrb(rscratch1, Address(rscratch1));
+ __ cmp(rscratch1, JavaThread::stack_guard_yellow_disabled);
+ __ br(Assembler::NE, no_reguard);
+
+ __ pusha(); // XXX only save smashed registers
+ __ mov(c_rarg0, rthread);
+ __ mov(rscratch2, CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages));
+ __ blrt(rscratch2, 0, 0, 0);
+ __ popa(); // XXX only restore smashed registers
+ __ bind(no_reguard);
+ }
+
+ // The method register is junk from after the thread_in_native transition
+ // until here. Also can't call_VM until the bcp has been
+ // restored. Need bcp for throwing exception below so get it now.
+ __ get_method(rmethod);
+
+ // restore bcp to have legal interpreter frame, i.e., bci == 0 <=>
+ // rbcp == code_base()
+ __ ldr(rbcp, Address(rmethod, Method::const_offset())); // get ConstMethod*
+ __ add(rbcp, rbcp, in_bytes(ConstMethod::codes_offset())); // get codebase
+ // handle exceptions (exception handling will handle unlocking!)
+ {
+ Label L;
+ __ ldr(rscratch1, Address(rthread, Thread::pending_exception_offset()));
+ __ cbz(rscratch1, L);
+ // Note: At some point we may want to unify this with the code
+ // used in call_VM_base(); i.e., we should use the
+ // StubRoutines::forward_exception code. For now this doesn't work
+ // here because the rsp is not correctly set at this point.
+ __ MacroAssembler::call_VM(noreg,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::throw_pending_exception));
+ __ should_not_reach_here();
+ __ bind(L);
+ }
+
+ // do unlocking if necessary
+ {
+ Label L;
+ __ ldrw(t, Address(rmethod, Method::access_flags_offset()));
+ __ tst(t, JVM_ACC_SYNCHRONIZED);
+ __ br(Assembler::EQ, L);
+ // the code below should be shared with interpreter macro
+ // assembler implementation
+ {
+ Label unlock;
+ // BasicObjectLock will be first in list, since this is a
+ // synchronized method. However, need to check that the object
+ // has not been unlocked by an explicit monitorexit bytecode.
+
+ // monitor expect in c_rarg1 for slow unlock path
+ __ lea (c_rarg1, Address(rfp, // address of first monitor
+ (intptr_t)(frame::interpreter_frame_initial_sp_offset *
+ wordSize - sizeof(BasicObjectLock))));
+
+ __ ldr(t, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes()));
+ __ cbnz(t, unlock);
+
+ // Entry already unlocked, need to throw exception
+ __ MacroAssembler::call_VM(noreg,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::throw_illegal_monitor_state_exception));
+ __ should_not_reach_here();
+
+ __ bind(unlock);
+ __ unlock_object(c_rarg1);
+ }
+ __ bind(L);
+ }
+
+ // jvmti support
+ // Note: This must happen _after_ handling/throwing any exceptions since
+ // the exception handler code notifies the runtime of method exits
+ // too. If this happens before, method entry/exit notifications are
+ // not properly paired (was bug - gri 11/22/99).
+ __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI);
+
+ // restore potential result in r0:d0, call result handler to
+ // restore potential result in ST0 & handle result
+
+ __ pop(ltos);
+ __ pop(dtos);
+
+ __ blr(result_handler);
+
+ // remove activation
+ __ ldr(esp, Address(rfp,
+ frame::interpreter_frame_sender_sp_offset *
+ wordSize)); // get sender sp
+ // remove frame anchor
+ __ leave();
+
+ // resture sender sp
+ __ mov(sp, esp);
+
+ __ ret(lr);
+
+ if (inc_counter) {
+ // Handle overflow of counter and compile method
+ __ bind(invocation_counter_overflow);
+ generate_counter_overflow(&continue_after_compile);
+ }
+
+ return entry_point;
+}
+
+//
+// Generic interpreted method entry to (asm) interpreter
+//
+address InterpreterGenerator::generate_normal_entry(bool synchronized) {
+ // determine code generation flags
+ bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods;
+
+ // rscratch1: sender sp
+ address entry_point = __ pc();
+
+ const Address constMethod(rmethod, Method::const_offset());
+ const Address access_flags(rmethod, Method::access_flags_offset());
+ const Address size_of_parameters(r3,
+ ConstMethod::size_of_parameters_offset());
+ const Address size_of_locals(r3, ConstMethod::size_of_locals_offset());
+
+ // get parameter size (always needed)
+ // need to load the const method first
+ __ ldr(r3, constMethod);
+ __ load_unsigned_short(r2, size_of_parameters);
+
+ // r2: size of parameters
+
+ __ load_unsigned_short(r3, size_of_locals); // get size of locals in words
+ __ sub(r3, r3, r2); // r3 = no. of additional locals
+
+ // see if we've got enough room on the stack for locals plus overhead.
+ generate_stack_overflow_check();
+
+ // compute beginning of parameters (rlocals)
+ __ add(rlocals, esp, r2, ext::uxtx, 3);
+ __ sub(rlocals, rlocals, wordSize);
+
+ // Make room for locals
+ __ sub(rscratch1, esp, r3, ext::uxtx, 3);
+ __ andr(sp, rscratch1, -16);
+
+ // r3 - # of additional locals
+ // allocate space for locals
+ // explicitly initialize locals
+ {
+ Label exit, loop;
+ __ ands(zr, r3, r3);
+ __ br(Assembler::LE, exit); // do nothing if r3 <= 0
+ __ bind(loop);
+ __ str(zr, Address(__ post(rscratch1, wordSize)));
+ __ sub(r3, r3, 1); // until everything initialized
+ __ cbnz(r3, loop);
+ __ bind(exit);
+ }
+
+ // And the base dispatch table
+ __ get_dispatch();
+
+ // initialize fixed part of activation frame
+ generate_fixed_frame(false);
+#ifndef PRODUCT
+ // tell the simulator that a method has been entered
+ if (NotifySimulator) {
+ __ notify(Assembler::method_entry);
+ }
+#endif
+ // make sure method is not native & not abstract
+#ifdef ASSERT
+ __ ldrw(r0, access_flags);
+ {
+ Label L;
+ __ tst(r0, JVM_ACC_NATIVE);
+ __ br(Assembler::EQ, L);
+ __ stop("tried to execute native method as non-native");
+ __ bind(L);
+ }
+ {
+ Label L;
+ __ tst(r0, JVM_ACC_ABSTRACT);
+ __ br(Assembler::EQ, L);
+ __ stop("tried to execute abstract method in interpreter");
+ __ bind(L);
+ }
+#endif
+
+ // Since at this point in the method invocation the exception
+ // handler would try to exit the monitor of synchronized methods
+ // which hasn't been entered yet, we set the thread local variable
+ // _do_not_unlock_if_synchronized to true. The remove_activation
+ // will check this flag.
+
+ const Address do_not_unlock_if_synchronized(rthread,
+ in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()));
+ __ mov(rscratch2, true);
+ __ strb(rscratch2, do_not_unlock_if_synchronized);
+
+ // increment invocation count & check for overflow
+ Label invocation_counter_overflow;
+ Label profile_method;
+ Label profile_method_continue;
+ if (inc_counter) {
+ generate_counter_incr(&invocation_counter_overflow,
+ &profile_method,
+ &profile_method_continue);
+ if (ProfileInterpreter) {
+ __ bind(profile_method_continue);
+ }
+ }
+
+ Label continue_after_compile;
+ __ bind(continue_after_compile);
+
+ bang_stack_shadow_pages(false);
+
+ // reset the _do_not_unlock_if_synchronized flag
+ __ strb(zr, do_not_unlock_if_synchronized);
+
+ // check for synchronized methods
+ // Must happen AFTER invocation_counter check and stack overflow check,
+ // so method is not locked if overflows.
+ if (synchronized) {
+ // Allocate monitor and lock method
+ lock_method();
+ } else {
+ // no synchronization necessary
+#ifdef ASSERT
+ {
+ Label L;
+ __ ldrw(r0, access_flags);
+ __ tst(r0, JVM_ACC_SYNCHRONIZED);
+ __ br(Assembler::EQ, L);
+ __ stop("method needs synchronization");
+ __ bind(L);
+ }
+#endif
+ }
+
+ // start execution
+#ifdef ASSERT
+ {
+ Label L;
+ const Address monitor_block_top (rfp,
+ frame::interpreter_frame_monitor_block_top_offset * wordSize);
+ __ ldr(rscratch1, monitor_block_top);
+ __ cmp(esp, rscratch1);
+ __ br(Assembler::EQ, L);
+ __ stop("broken stack frame setup in interpreter");
+ __ bind(L);
+ }
+#endif
+
+ // jvmti support
+ __ notify_method_entry();
+
+ __ dispatch_next(vtos);
+
+ // invocation counter overflow
+ if (inc_counter) {
+ if (ProfileInterpreter) {
+ // We have decided to profile this method in the interpreter
+ __ bind(profile_method);
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method));
+ __ set_method_data_pointer_for_bcp();
+ // don't think we need this
+ __ get_method(r1);
+ __ b(profile_method_continue);
+ }
+ // Handle overflow of counter and compile method
+ __ bind(invocation_counter_overflow);
+ generate_counter_overflow(&continue_after_compile);
+ }
+
+ return entry_point;
+}
+
+//-----------------------------------------------------------------------------
+// Exceptions
+
+void TemplateInterpreterGenerator::generate_throw_exception() {
+ // Entry point in previous activation (i.e., if the caller was
+ // interpreted)
+ Interpreter::_rethrow_exception_entry = __ pc();
+ // Restore sp to interpreter_frame_last_sp even though we are going
+ // to empty the expression stack for the exception processing.
+ __ str(zr, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize));
+ // r0: exception
+ // r3: return address/pc that threw exception
+ __ restore_bcp(); // rbcp points to call/send
+ __ restore_locals();
+ __ restore_constant_pool_cache();
+ __ reinit_heapbase(); // restore rheapbase as heapbase.
+ __ get_dispatch();
+
+#ifndef PRODUCT
+ // tell the simulator that the caller method has been reentered
+ if (NotifySimulator) {
+ __ get_method(rmethod);
+ __ notify(Assembler::method_reentry);
+ }
+#endif
+ // Entry point for exceptions thrown within interpreter code
+ Interpreter::_throw_exception_entry = __ pc();
+ // If we came here via a NullPointerException on the receiver of a
+ // method, rmethod may be corrupt.
+ __ get_method(rmethod);
+ // expression stack is undefined here
+ // r0: exception
+ // rbcp: exception bcp
+ __ verify_oop(r0);
+ __ mov(c_rarg1, r0);
+
+ // expression stack must be empty before entering the VM in case of
+ // an exception
+ __ empty_expression_stack();
+ // find exception handler address and preserve exception oop
+ __ call_VM(r3,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::exception_handler_for_exception),
+ c_rarg1);
+
+ // Calculate stack limit
+ __ ldr(rscratch1, Address(rmethod, Method::const_offset()));
+ __ ldrh(rscratch1, Address(rscratch1, ConstMethod::max_stack_offset()));
+ __ add(rscratch1, rscratch1, frame::interpreter_frame_monitor_size() + 4);
+ __ ldr(rscratch2,
+ Address(rfp, frame::interpreter_frame_initial_sp_offset * wordSize));
+ __ sub(rscratch1, rscratch2, rscratch1, ext::uxtx, 3);
+ __ andr(sp, rscratch1, -16);
+
+ // r0: exception handler entry point
+ // r3: preserved exception oop
+ // rbcp: bcp for exception handler
+ __ push_ptr(r3); // push exception which is now the only value on the stack
+ __ br(r0); // jump to exception handler (may be _remove_activation_entry!)
+
+ // If the exception is not handled in the current frame the frame is
+ // removed and the exception is rethrown (i.e. exception
+ // continuation is _rethrow_exception).
+ //
+ // Note: At this point the bci is still the bxi for the instruction
+ // which caused the exception and the expression stack is
+ // empty. Thus, for any VM calls at this point, GC will find a legal
+ // oop map (with empty expression stack).
+
+ //
+ // JVMTI PopFrame support
+ //
+
+ Interpreter::_remove_activation_preserving_args_entry = __ pc();
+ __ empty_expression_stack();
+ // Set the popframe_processing bit in pending_popframe_condition
+ // indicating that we are currently handling popframe, so that
+ // call_VMs that may happen later do not trigger new popframe
+ // handling cycles.
+ __ ldrw(r3, Address(rthread, JavaThread::popframe_condition_offset()));
+ __ orr(r3, r3, JavaThread::popframe_processing_bit);
+ __ strw(r3, Address(rthread, JavaThread::popframe_condition_offset()));
+
+ {
+ // Check to see whether we are returning to a deoptimized frame.
+ // (The PopFrame call ensures that the caller of the popped frame is
+ // either interpreted or compiled and deoptimizes it if compiled.)
+ // In this case, we can't call dispatch_next() after the frame is
+ // popped, but instead must save the incoming arguments and restore
+ // them after deoptimization has occurred.
+ //
+ // Note that we don't compare the return PC against the
+ // deoptimization blob's unpack entry because of the presence of
+ // adapter frames in C2.
+ Label caller_not_deoptimized;
+ __ ldr(c_rarg1, Address(rfp, frame::return_addr_offset * wordSize));
+ __ super_call_VM_leaf(CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::interpreter_contains), c_rarg1);
+ __ cbnz(r0, caller_not_deoptimized);
+
+ // Compute size of arguments for saving when returning to
+ // deoptimized caller
+ __ get_method(r0);
+ __ ldr(r0, Address(r0, Method::const_offset()));
+ __ load_unsigned_short(r0, Address(r0, in_bytes(ConstMethod::
+ size_of_parameters_offset())));
+ __ lsl(r0, r0, Interpreter::logStackElementSize);
+ __ restore_locals(); // XXX do we need this?
+ __ sub(rlocals, rlocals, r0);
+ __ add(rlocals, rlocals, wordSize);
+ // Save these arguments
+ __ super_call_VM_leaf(CAST_FROM_FN_PTR(address,
+ Deoptimization::
+ popframe_preserve_args),
+ rthread, r0, rlocals);
+
+ __ remove_activation(vtos,
+ /* throw_monitor_exception */ false,
+ /* install_monitor_exception */ false,
+ /* notify_jvmdi */ false);
+
+ // Inform deoptimization that it is responsible for restoring
+ // these arguments
+ __ mov(rscratch1, JavaThread::popframe_force_deopt_reexecution_bit);
+ __ strw(rscratch1, Address(rthread, JavaThread::popframe_condition_offset()));
+
+ // Continue in deoptimization handler
+ __ ret(lr);
+
+ __ bind(caller_not_deoptimized);
+ }
+
+ __ remove_activation(vtos,
+ /* throw_monitor_exception */ false,
+ /* install_monitor_exception */ false,
+ /* notify_jvmdi */ false);
+
+ // Restore the last_sp and null it out
+ __ ldr(esp, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize));
+ __ str(zr, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize));
+
+ __ restore_bcp();
+ __ restore_locals();
+ __ restore_constant_pool_cache();
+ __ get_method(rmethod);
+
+ // The method data pointer was incremented already during
+ // call profiling. We have to restore the mdp for the current bcp.
+ if (ProfileInterpreter) {
+ __ set_method_data_pointer_for_bcp();
+ }
+
+ // Clear the popframe condition flag
+ __ strw(zr, Address(rthread, JavaThread::popframe_condition_offset()));
+ assert(JavaThread::popframe_inactive == 0, "fix popframe_inactive");
+
+#if INCLUDE_JVMTI
+ {
+ Label L_done;
+
+ __ ldrb(rscratch1, Address(rbcp, 0));
+ __ cmpw(r1, Bytecodes::_invokestatic);
+ __ br(Assembler::EQ, L_done);
+
+ // The member name argument must be restored if _invokestatic is re-executed after a PopFrame call.
+ // Detect such a case in the InterpreterRuntime function and return the member name argument, or NULL.
+
+ __ ldr(c_rarg0, Address(rlocals, 0));
+ __ call_VM(r0, CAST_FROM_FN_PTR(address, InterpreterRuntime::member_name_arg_or_null), c_rarg0, rmethod, rbcp);
+
+ __ cbz(r0, L_done);
+
+ __ str(r0, Address(esp, 0));
+ __ bind(L_done);
+ }
+#endif // INCLUDE_JVMTI
+
+ // Restore machine SP
+ __ ldr(rscratch1, Address(rmethod, Method::const_offset()));
+ __ ldrh(rscratch1, Address(rscratch1, ConstMethod::max_stack_offset()));
+ __ add(rscratch1, rscratch1, frame::interpreter_frame_monitor_size() + 4);
+ __ ldr(rscratch2,
+ Address(rfp, frame::interpreter_frame_initial_sp_offset * wordSize));
+ __ sub(rscratch1, rscratch2, rscratch1, ext::uxtw, 3);
+ __ andr(sp, rscratch1, -16);
+
+ __ dispatch_next(vtos);
+ // end of PopFrame support
+
+ Interpreter::_remove_activation_entry = __ pc();
+
+ // preserve exception over this code sequence
+ __ pop_ptr(r0);
+ __ str(r0, Address(rthread, JavaThread::vm_result_offset()));
+ // remove the activation (without doing throws on illegalMonitorExceptions)
+ __ remove_activation(vtos, false, true, false);
+ // restore exception
+ // restore exception
+ __ get_vm_result(r0, rthread);
+
+ // In between activations - previous activation type unknown yet
+ // compute continuation point - the continuation point expects the
+ // following registers set up:
+ //
+ // r0: exception
+ // lr: return address/pc that threw exception
+ // rsp: expression stack of caller
+ // rfp: fp of caller
+ // FIXME: There's no point saving LR here because VM calls don't trash it
+ __ stp(r0, lr, Address(__ pre(sp, -2 * wordSize))); // save exception & return address
+ __ super_call_VM_leaf(CAST_FROM_FN_PTR(address,
+ SharedRuntime::exception_handler_for_return_address),
+ rthread, lr);
+ __ mov(r1, r0); // save exception handler
+ __ ldp(r0, lr, Address(__ post(sp, 2 * wordSize))); // restore exception & return address
+ // We might be returning to a deopt handler that expects r3 to
+ // contain the exception pc
+ __ mov(r3, lr);
+ // Note that an "issuing PC" is actually the next PC after the call
+ __ br(r1); // jump to exception
+ // handler of caller
+}
+
+
+//
+// JVMTI ForceEarlyReturn support
+//
+address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) {
+ address entry = __ pc();
+
+ __ restore_bcp();
+ __ restore_locals();
+ __ empty_expression_stack();
+ __ load_earlyret_value(state);
+
+ __ ldr(rscratch1, Address(rthread, JavaThread::jvmti_thread_state_offset()));
+ Address cond_addr(rscratch1, JvmtiThreadState::earlyret_state_offset());
+
+ // Clear the earlyret state
+ assert(JvmtiThreadState::earlyret_inactive == 0, "should be");
+ __ str(zr, cond_addr);
+
+ __ remove_activation(state,
+ false, /* throw_monitor_exception */
+ false, /* install_monitor_exception */
+ true); /* notify_jvmdi */
+ __ ret(lr);
+
+ return entry;
+} // end of ForceEarlyReturn support
+
+
+
+//-----------------------------------------------------------------------------
+// Helper for vtos entry point generation
+
+void TemplateInterpreterGenerator::set_vtos_entry_points(Template* t,
+ address& bep,
+ address& cep,
+ address& sep,
+ address& aep,
+ address& iep,
+ address& lep,
+ address& fep,
+ address& dep,
+ address& vep) {
+ assert(t->is_valid() && t->tos_in() == vtos, "illegal template");
+ Label L;
+ aep = __ pc(); __ push_ptr(); __ b(L);
+ fep = __ pc(); __ push_f(); __ b(L);
+ dep = __ pc(); __ push_d(); __ b(L);
+ lep = __ pc(); __ push_l(); __ b(L);
+ bep = cep = sep =
+ iep = __ pc(); __ push_i();
+ vep = __ pc();
+ __ bind(L);
+ generate_and_dispatch(t);
+}
+
+//-----------------------------------------------------------------------------
+// Generation of individual instructions
+
+// helpers for generate_and_dispatch
+
+
+InterpreterGenerator::InterpreterGenerator(StubQueue* code)
+ : TemplateInterpreterGenerator(code) {
+ generate_all(); // down here so it can be "virtual"
+}
+
+//-----------------------------------------------------------------------------
+
+// Non-product code
+#ifndef PRODUCT
+address TemplateInterpreterGenerator::generate_trace_code(TosState state) {
+ address entry = __ pc();
+
+ __ push(lr);
+ __ push(state);
+ __ push(RegSet::range(r0, r15), sp);
+ __ mov(c_rarg2, r0); // Pass itos
+ __ call_VM(noreg,
+ CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode),
+ c_rarg1, c_rarg2, c_rarg3);
+ __ pop(RegSet::range(r0, r15), sp);
+ __ pop(state);
+ __ pop(lr);
+ __ ret(lr); // return from result handler
+
+ return entry;
+}
+
+void TemplateInterpreterGenerator::count_bytecode() {
+ Register rscratch3 = r0;
+ __ push(rscratch1);
+ __ push(rscratch2);
+ __ push(rscratch3);
+ Label L;
+ __ mov(rscratch2, (address) &BytecodeCounter::_counter_value);
+ __ bind(L);
+ __ ldxr(rscratch1, rscratch2);
+ __ add(rscratch1, rscratch1, 1);
+ __ stxr(rscratch3, rscratch1, rscratch2);
+ __ cbnzw(rscratch3, L);
+ __ pop(rscratch3);
+ __ pop(rscratch2);
+ __ pop(rscratch1);
+}
+
+void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { ; }
+
+void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { ; }
+
+
+void TemplateInterpreterGenerator::trace_bytecode(Template* t) {
+ // Call a little run-time stub to avoid blow-up for each bytecode.
+ // The run-time runtime saves the right registers, depending on
+ // the tosca in-state for the given template.
+
+ assert(Interpreter::trace_code(t->tos_in()) != NULL,
+ "entry must have been generated");
+ __ bl(Interpreter::trace_code(t->tos_in()));
+ __ reinit_heapbase();
+}
+
+
+void TemplateInterpreterGenerator::stop_interpreter_at() {
+ Label L;
+ __ push(rscratch1);
+ __ mov(rscratch1, (address) &BytecodeCounter::_counter_value);
+ __ ldr(rscratch1, Address(rscratch1));
+ __ mov(rscratch2, StopInterpreterAt);
+ __ cmpw(rscratch1, rscratch2);
+ __ br(Assembler::NE, L);
+ __ brk(0);
+ __ bind(L);
+ __ pop(rscratch1);
+}
+
+#ifdef BUILTIN_SIM
+
+#include <sys/mman.h>
+#include <unistd.h>
+
+extern "C" {
+ static int PAGESIZE = getpagesize();
+ int is_mapped_address(u_int64_t address)
+ {
+ address = (address & ~((u_int64_t)PAGESIZE - 1));
+ if (msync((void *)address, PAGESIZE, MS_ASYNC) == 0) {
+ return true;
+ }
+ if (errno != ENOMEM) {
+ return true;
+ }
+ return false;
+ }
+
+ void bccheck1(u_int64_t pc, u_int64_t fp, char *method, int *bcidx, int *framesize, char *decode)
+ {
+ if (method != 0) {
+ method[0] = '\0';
+ }
+ if (bcidx != 0) {
+ *bcidx = -2;
+ }
+ if (decode != 0) {
+ decode[0] = 0;
+ }
+
+ if (framesize != 0) {
+ *framesize = -1;
+ }
+
+ if (Interpreter::contains((address)pc)) {
+ AArch64Simulator *sim = AArch64Simulator::get_current(UseSimulatorCache, DisableBCCheck);
+ Method* meth;
+ address bcp;
+ if (fp) {
+#define FRAME_SLOT_METHOD 3
+#define FRAME_SLOT_BCP 7
+ meth = (Method*)sim->getMemory()->loadU64(fp - (FRAME_SLOT_METHOD << 3));
+ bcp = (address)sim->getMemory()->loadU64(fp - (FRAME_SLOT_BCP << 3));
+#undef FRAME_SLOT_METHOD
+#undef FRAME_SLOT_BCP
+ } else {
+ meth = (Method*)sim->getCPUState().xreg(RMETHOD, 0);
+ bcp = (address)sim->getCPUState().xreg(RBCP, 0);
+ }
+ if (meth->is_native()) {
+ return;
+ }
+ if(method && meth->is_method()) {
+ ResourceMark rm;
+ method[0] = 'I';
+ method[1] = ' ';
+ meth->name_and_sig_as_C_string(method + 2, 398);
+ }
+ if (bcidx) {
+ if (meth->contains(bcp)) {
+ *bcidx = meth->bci_from(bcp);
+ } else {
+ *bcidx = -2;
+ }
+ }
+ if (decode) {
+ if (!BytecodeTracer::closure()) {
+ BytecodeTracer::set_closure(BytecodeTracer::std_closure());
+ }
+ stringStream str(decode, 400);
+ BytecodeTracer::trace(meth, bcp, &str);
+ }
+ } else {
+ if (method) {
+ CodeBlob *cb = CodeCache::find_blob((address)pc);
+ if (cb != NULL) {
+ if (cb->is_nmethod()) {
+ ResourceMark rm;
+ nmethod* nm = (nmethod*)cb;
+ method[0] = 'C';
+ method[1] = ' ';
+ nm->method()->name_and_sig_as_C_string(method + 2, 398);
+ } else if (cb->is_adapter_blob()) {
+ strcpy(method, "B adapter blob");
+ } else if (cb->is_runtime_stub()) {
+ strcpy(method, "B runtime stub");
+ } else if (cb->is_exception_stub()) {
+ strcpy(method, "B exception stub");
+ } else if (cb->is_deoptimization_stub()) {
+ strcpy(method, "B deoptimization stub");
+ } else if (cb->is_safepoint_stub()) {
+ strcpy(method, "B safepoint stub");
+ } else if (cb->is_uncommon_trap_stub()) {
+ strcpy(method, "B uncommon trap stub");
+ } else if (cb->contains((address)StubRoutines::call_stub())) {
+ strcpy(method, "B call stub");
+ } else {
+ strcpy(method, "B unknown blob : ");
+ strcat(method, cb->name());
+ }
+ if (framesize != NULL) {
+ *framesize = cb->frame_size();
+ }
+ }
+ }
+ }
+ }
+
+
+ JNIEXPORT void bccheck(u_int64_t pc, u_int64_t fp, char *method, int *bcidx, int *framesize, char *decode)
+ {
+ bccheck1(pc, fp, method, bcidx, framesize, decode);
+ }
+}
+
+#endif // BUILTIN_SIM
+#endif // !PRODUCT
+#endif // ! CC_INTERP
--- a/hotspot/src/cpu/aarch64/vm/templateInterpreter_aarch64.cpp Sat Dec 05 15:17:29 2015 +0100
+++ b/hotspot/src/cpu/aarch64/vm/templateInterpreter_aarch64.cpp Sat Dec 05 17:14:02 2015 +0000
@@ -24,238 +24,12 @@
*/
#include "precompiled.hpp"
-#include "asm/macroAssembler.hpp"
-#include "interpreter/bytecodeHistogram.hpp"
#include "interpreter/interpreter.hpp"
-#include "interpreter/interpreterGenerator.hpp"
-#include "interpreter/interpreterRuntime.hpp"
-#include "interpreter/interp_masm.hpp"
-#include "interpreter/templateTable.hpp"
-#include "interpreter/bytecodeTracer.hpp"
-#include "oops/arrayOop.hpp"
-#include "oops/methodData.hpp"
-#include "oops/method.hpp"
-#include "oops/oop.inline.hpp"
-#include "prims/jvmtiExport.hpp"
-#include "prims/jvmtiThreadState.hpp"
-#include "runtime/arguments.hpp"
-#include "runtime/deoptimization.hpp"
-#include "runtime/frame.inline.hpp"
-#include "runtime/sharedRuntime.hpp"
-#include "runtime/stubRoutines.hpp"
-#include "runtime/synchronizer.hpp"
-#include "runtime/timer.hpp"
-#include "runtime/vframeArray.hpp"
-#include "utilities/debug.hpp"
-#include <sys/types.h>
-
-#ifndef PRODUCT
+#include "oops/constMethod.hpp"
#include "oops/method.hpp"
-#endif // !PRODUCT
-
-#ifdef BUILTIN_SIM
-#include "../../../../../../simulator/simulator.hpp"
-#endif
-
-#define __ _masm->
-
-#ifndef CC_INTERP
-
-//-----------------------------------------------------------------------------
-
-extern "C" void entry(CodeBuffer*);
-
-//-----------------------------------------------------------------------------
-
-address TemplateInterpreterGenerator::generate_StackOverflowError_handler() {
- address entry = __ pc();
-
-#ifdef ASSERT
- {
- Label L;
- __ ldr(rscratch1, Address(rfp,
- frame::interpreter_frame_monitor_block_top_offset *
- wordSize));
- __ mov(rscratch2, sp);
- __ cmp(rscratch1, rscratch2); // maximal rsp for current rfp (stack
- // grows negative)
- __ br(Assembler::HS, L); // check if frame is complete
- __ stop ("interpreter frame not set up");
- __ bind(L);
- }
-#endif // ASSERT
- // Restore bcp under the assumption that the current frame is still
- // interpreted
- __ restore_bcp();
-
- // expression stack must be empty before entering the VM if an
- // exception happened
- __ empty_expression_stack();
- // throw exception
- __ call_VM(noreg,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::throw_StackOverflowError));
- return entry;
-}
-
-address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler(
- const char* name) {
- address entry = __ pc();
- // expression stack must be empty before entering the VM if an
- // exception happened
- __ empty_expression_stack();
- // setup parameters
- // ??? convention: expect aberrant index in register r1
- __ movw(c_rarg2, r1);
- __ mov(c_rarg1, (address)name);
- __ call_VM(noreg,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::
- throw_ArrayIndexOutOfBoundsException),
- c_rarg1, c_rarg2);
- return entry;
-}
-
-address TemplateInterpreterGenerator::generate_ClassCastException_handler() {
- address entry = __ pc();
-
- // object is at TOS
- __ pop(c_rarg1);
-
- // expression stack must be empty before entering the VM if an
- // exception happened
- __ empty_expression_stack();
-
- __ call_VM(noreg,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::
- throw_ClassCastException),
- c_rarg1);
- return entry;
-}
-
-address TemplateInterpreterGenerator::generate_exception_handler_common(
- const char* name, const char* message, bool pass_oop) {
- assert(!pass_oop || message == NULL, "either oop or message but not both");
- address entry = __ pc();
- if (pass_oop) {
- // object is at TOS
- __ pop(c_rarg2);
- }
- // expression stack must be empty before entering the VM if an
- // exception happened
- __ empty_expression_stack();
- // setup parameters
- __ lea(c_rarg1, Address((address)name));
- if (pass_oop) {
- __ call_VM(r0, CAST_FROM_FN_PTR(address,
- InterpreterRuntime::
- create_klass_exception),
- c_rarg1, c_rarg2);
- } else {
- // kind of lame ExternalAddress can't take NULL because
- // external_word_Relocation will assert.
- if (message != NULL) {
- __ lea(c_rarg2, Address((address)message));
- } else {
- __ mov(c_rarg2, NULL_WORD);
- }
- __ call_VM(r0,
- CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception),
- c_rarg1, c_rarg2);
- }
- // throw exception
- __ b(address(Interpreter::throw_exception_entry()));
- return entry;
-}
-
-address TemplateInterpreterGenerator::generate_continuation_for(TosState state) {
- address entry = __ pc();
- // NULL last_sp until next java call
- __ str(zr, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize));
- __ dispatch_next(state);
- return entry;
-}
-
-address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step, size_t index_size) {
- address entry = __ pc();
-
- // Restore stack bottom in case i2c adjusted stack
- __ ldr(esp, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize));
- // and NULL it as marker that esp is now tos until next java call
- __ str(zr, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize));
- __ restore_bcp();
- __ restore_locals();
- __ restore_constant_pool_cache();
- __ get_method(rmethod);
-
- // Pop N words from the stack
- __ get_cache_and_index_at_bcp(r1, r2, 1, index_size);
- __ ldr(r1, Address(r1, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::flags_offset()));
- __ andr(r1, r1, ConstantPoolCacheEntry::parameter_size_mask);
-
- __ add(esp, esp, r1, Assembler::LSL, 3);
-
- // Restore machine SP
- __ ldr(rscratch1, Address(rmethod, Method::const_offset()));
- __ ldrh(rscratch1, Address(rscratch1, ConstMethod::max_stack_offset()));
- __ add(rscratch1, rscratch1, frame::interpreter_frame_monitor_size() + 2);
- __ ldr(rscratch2,
- Address(rfp, frame::interpreter_frame_initial_sp_offset * wordSize));
- __ sub(rscratch1, rscratch2, rscratch1, ext::uxtw, 3);
- __ andr(sp, rscratch1, -16);
-
-#ifndef PRODUCT
- // tell the simulator that the method has been reentered
- if (NotifySimulator) {
- __ notify(Assembler::method_reentry);
- }
-#endif
- __ get_dispatch();
- __ dispatch_next(state, step);
-
- return entry;
-}
-
-address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state,
- int step) {
- address entry = __ pc();
- __ restore_bcp();
- __ restore_locals();
- __ restore_constant_pool_cache();
- __ get_method(rmethod);
-
- // handle exceptions
- {
- Label L;
- __ ldr(rscratch1, Address(rthread, Thread::pending_exception_offset()));
- __ cbz(rscratch1, L);
- __ call_VM(noreg,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::throw_pending_exception));
- __ should_not_reach_here();
- __ bind(L);
- }
-
- __ get_dispatch();
-
- // Calculate stack limit
- __ ldr(rscratch1, Address(rmethod, Method::const_offset()));
- __ ldrh(rscratch1, Address(rscratch1, ConstMethod::max_stack_offset()));
- __ add(rscratch1, rscratch1, frame::interpreter_frame_monitor_size() + 2);
- __ ldr(rscratch2,
- Address(rfp, frame::interpreter_frame_initial_sp_offset * wordSize));
- __ sub(rscratch1, rscratch2, rscratch1, ext::uxtx, 3);
- __ andr(sp, rscratch1, -16);
-
- // Restore expression stack pointer
- __ ldr(esp, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize));
- // NULL last_sp until next java call
- __ str(zr, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize));
-
- __ dispatch_next(state, step);
- return entry;
-}
+#include "runtime/frame.inline.hpp"
+#include "utilities/debug.hpp"
+#include "utilities/macros.hpp"
int AbstractInterpreter::BasicType_as_index(BasicType type) {
@@ -279,1195 +53,6 @@
return i;
}
-
-address TemplateInterpreterGenerator::generate_result_handler_for(
- BasicType type) {
- address entry = __ pc();
- switch (type) {
- case T_BOOLEAN: __ uxtb(r0, r0); break;
- case T_CHAR : __ uxth(r0, r0); break;
- case T_BYTE : __ sxtb(r0, r0); break;
- case T_SHORT : __ sxth(r0, r0); break;
- case T_INT : __ uxtw(r0, r0); break; // FIXME: We almost certainly don't need this
- case T_LONG : /* nothing to do */ break;
- case T_VOID : /* nothing to do */ break;
- case T_FLOAT : /* nothing to do */ break;
- case T_DOUBLE : /* nothing to do */ break;
- case T_OBJECT :
- // retrieve result from frame
- __ ldr(r0, Address(rfp, frame::interpreter_frame_oop_temp_offset*wordSize));
- // and verify it
- __ verify_oop(r0);
- break;
- default : ShouldNotReachHere();
- }
- __ ret(lr); // return from result handler
- return entry;
-}
-
-address TemplateInterpreterGenerator::generate_safept_entry_for(
- TosState state,
- address runtime_entry) {
- address entry = __ pc();
- __ push(state);
- __ call_VM(noreg, runtime_entry);
- __ membar(Assembler::AnyAny);
- __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos));
- return entry;
-}
-
-// Helpers for commoning out cases in the various type of method entries.
-//
-
-
-// increment invocation count & check for overflow
-//
-// Note: checking for negative value instead of overflow
-// so we have a 'sticky' overflow test
-//
-// rmethod: method
-//
-void InterpreterGenerator::generate_counter_incr(
- Label* overflow,
- Label* profile_method,
- Label* profile_method_continue) {
- Label done;
- // Note: In tiered we increment either counters in Method* or in MDO depending if we're profiling or not.
- if (TieredCompilation) {
- int increment = InvocationCounter::count_increment;
- Label no_mdo;
- if (ProfileInterpreter) {
- // Are we profiling?
- __ ldr(r0, Address(rmethod, Method::method_data_offset()));
- __ cbz(r0, no_mdo);
- // Increment counter in the MDO
- const Address mdo_invocation_counter(r0, in_bytes(MethodData::invocation_counter_offset()) +
- in_bytes(InvocationCounter::counter_offset()));
- const Address mask(r0, in_bytes(MethodData::invoke_mask_offset()));
- __ increment_mask_and_jump(mdo_invocation_counter, increment, mask, rscratch1, rscratch2, false, Assembler::EQ, overflow);
- __ b(done);
- }
- __ bind(no_mdo);
- // Increment counter in MethodCounters
- const Address invocation_counter(rscratch2,
- MethodCounters::invocation_counter_offset() +
- InvocationCounter::counter_offset());
- __ get_method_counters(rmethod, rscratch2, done);
- const Address mask(rscratch2, in_bytes(MethodCounters::invoke_mask_offset()));
- __ increment_mask_and_jump(invocation_counter, increment, mask, rscratch1, r1, false, Assembler::EQ, overflow);
- __ bind(done);
- } else { // not TieredCompilation
- const Address backedge_counter(rscratch2,
- MethodCounters::backedge_counter_offset() +
- InvocationCounter::counter_offset());
- const Address invocation_counter(rscratch2,
- MethodCounters::invocation_counter_offset() +
- InvocationCounter::counter_offset());
-
- __ get_method_counters(rmethod, rscratch2, done);
-
- if (ProfileInterpreter) { // %%% Merge this into MethodData*
- __ ldrw(r1, Address(rscratch2, MethodCounters::interpreter_invocation_counter_offset()));
- __ addw(r1, r1, 1);
- __ strw(r1, Address(rscratch2, MethodCounters::interpreter_invocation_counter_offset()));
- }
- // Update standard invocation counters
- __ ldrw(r1, invocation_counter);
- __ ldrw(r0, backedge_counter);
-
- __ addw(r1, r1, InvocationCounter::count_increment);
- __ andw(r0, r0, InvocationCounter::count_mask_value);
-
- __ strw(r1, invocation_counter);
- __ addw(r0, r0, r1); // add both counters
-
- // profile_method is non-null only for interpreted method so
- // profile_method != NULL == !native_call
-
- if (ProfileInterpreter && profile_method != NULL) {
- // Test to see if we should create a method data oop
- __ ldr(rscratch2, Address(rmethod, Method::method_counters_offset()));
- __ ldrw(rscratch2, Address(rscratch2, in_bytes(MethodCounters::interpreter_profile_limit_offset())));
- __ cmpw(r0, rscratch2);
- __ br(Assembler::LT, *profile_method_continue);
-
- // if no method data exists, go to profile_method
- __ test_method_data_pointer(r0, *profile_method);
- }
-
- {
- __ ldr(rscratch2, Address(rmethod, Method::method_counters_offset()));
- __ ldrw(rscratch2, Address(rscratch2, in_bytes(MethodCounters::interpreter_invocation_limit_offset())));
- __ cmpw(r0, rscratch2);
- __ br(Assembler::HS, *overflow);
- }
- __ bind(done);
- }
-}
-
-void InterpreterGenerator::generate_counter_overflow(Label* do_continue) {
-
- // Asm interpreter on entry
- // On return (i.e. jump to entry_point) [ back to invocation of interpreter ]
- // Everything as it was on entry
-
- // InterpreterRuntime::frequency_counter_overflow takes two
- // arguments, the first (thread) is passed by call_VM, the second
- // indicates if the counter overflow occurs at a backwards branch
- // (NULL bcp). We pass zero for it. The call returns the address
- // of the verified entry point for the method or NULL if the
- // compilation did not complete (either went background or bailed
- // out).
- __ mov(c_rarg1, 0);
- __ call_VM(noreg,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::frequency_counter_overflow),
- c_rarg1);
-
- __ b(*do_continue);
-}
-
-// See if we've got enough room on the stack for locals plus overhead.
-// The expression stack grows down incrementally, so the normal guard
-// page mechanism will work for that.
-//
-// NOTE: Since the additional locals are also always pushed (wasn't
-// obvious in generate_method_entry) so the guard should work for them
-// too.
-//
-// Args:
-// r3: number of additional locals this frame needs (what we must check)
-// rmethod: Method*
-//
-// Kills:
-// r0
-void InterpreterGenerator::generate_stack_overflow_check(void) {
-
- // monitor entry size: see picture of stack set
- // (generate_method_entry) and frame_amd64.hpp
- const int entry_size = frame::interpreter_frame_monitor_size() * wordSize;
-
- // total overhead size: entry_size + (saved rbp through expr stack
- // bottom). be sure to change this if you add/subtract anything
- // to/from the overhead area
- const int overhead_size =
- -(frame::interpreter_frame_initial_sp_offset * wordSize) + entry_size;
-
- const int page_size = os::vm_page_size();
-
- Label after_frame_check;
-
- // see if the frame is greater than one page in size. If so,
- // then we need to verify there is enough stack space remaining
- // for the additional locals.
- //
- // Note that we use SUBS rather than CMP here because the immediate
- // field of this instruction may overflow. SUBS can cope with this
- // because it is a macro that will expand to some number of MOV
- // instructions and a register operation.
- __ subs(rscratch1, r3, (page_size - overhead_size) / Interpreter::stackElementSize);
- __ br(Assembler::LS, after_frame_check);
-
- // compute rsp as if this were going to be the last frame on
- // the stack before the red zone
-
- const Address stack_base(rthread, Thread::stack_base_offset());
- const Address stack_size(rthread, Thread::stack_size_offset());
-
- // locals + overhead, in bytes
- __ mov(r0, overhead_size);
- __ add(r0, r0, r3, Assembler::LSL, Interpreter::logStackElementSize); // 2 slots per parameter.
-
- __ ldr(rscratch1, stack_base);
- __ ldr(rscratch2, stack_size);
-
-#ifdef ASSERT
- Label stack_base_okay, stack_size_okay;
- // verify that thread stack base is non-zero
- __ cbnz(rscratch1, stack_base_okay);
- __ stop("stack base is zero");
- __ bind(stack_base_okay);
- // verify that thread stack size is non-zero
- __ cbnz(rscratch2, stack_size_okay);
- __ stop("stack size is zero");
- __ bind(stack_size_okay);
-#endif
-
- // Add stack base to locals and subtract stack size
- __ sub(rscratch1, rscratch1, rscratch2); // Stack limit
- __ add(r0, r0, rscratch1);
-
- // Use the maximum number of pages we might bang.
- const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages :
- (StackRedPages+StackYellowPages);
-
- // add in the red and yellow zone sizes
- __ add(r0, r0, max_pages * page_size * 2);
-
- // check against the current stack bottom
- __ cmp(sp, r0);
- __ br(Assembler::HI, after_frame_check);
-
- // Remove the incoming args, peeling the machine SP back to where it
- // was in the caller. This is not strictly necessary, but unless we
- // do so the stack frame may have a garbage FP; this ensures a
- // correct call stack that we can always unwind. The ANDR should be
- // unnecessary because the sender SP in r13 is always aligned, but
- // it doesn't hurt.
- __ andr(sp, r13, -16);
-
- // Note: the restored frame is not necessarily interpreted.
- // Use the shared runtime version of the StackOverflowError.
- assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "stub not yet generated");
- __ far_jump(RuntimeAddress(StubRoutines::throw_StackOverflowError_entry()));
-
- // all done with frame size check
- __ bind(after_frame_check);
-}
-
-// Allocate monitor and lock method (asm interpreter)
-//
-// Args:
-// rmethod: Method*
-// rlocals: locals
-//
-// Kills:
-// r0
-// c_rarg0, c_rarg1, c_rarg2, c_rarg3, ...(param regs)
-// rscratch1, rscratch2 (scratch regs)
-void TemplateInterpreterGenerator::lock_method() {
- // synchronize method
- const Address access_flags(rmethod, Method::access_flags_offset());
- const Address monitor_block_top(
- rfp,
- frame::interpreter_frame_monitor_block_top_offset * wordSize);
- const int entry_size = frame::interpreter_frame_monitor_size() * wordSize;
-
-#ifdef ASSERT
- {
- Label L;
- __ ldrw(r0, access_flags);
- __ tst(r0, JVM_ACC_SYNCHRONIZED);
- __ br(Assembler::NE, L);
- __ stop("method doesn't need synchronization");
- __ bind(L);
- }
-#endif // ASSERT
-
- // get synchronization object
- {
- const int mirror_offset = in_bytes(Klass::java_mirror_offset());
- Label done;
- __ ldrw(r0, access_flags);
- __ tst(r0, JVM_ACC_STATIC);
- // get receiver (assume this is frequent case)
- __ ldr(r0, Address(rlocals, Interpreter::local_offset_in_bytes(0)));
- __ br(Assembler::EQ, done);
- __ ldr(r0, Address(rmethod, Method::const_offset()));
- __ ldr(r0, Address(r0, ConstMethod::constants_offset()));
- __ ldr(r0, Address(r0,
- ConstantPool::pool_holder_offset_in_bytes()));
- __ ldr(r0, Address(r0, mirror_offset));
-
-#ifdef ASSERT
- {
- Label L;
- __ cbnz(r0, L);
- __ stop("synchronization object is NULL");
- __ bind(L);
- }
-#endif // ASSERT
-
- __ bind(done);
- }
-
- // add space for monitor & lock
- __ sub(sp, sp, entry_size); // add space for a monitor entry
- __ sub(esp, esp, entry_size);
- __ mov(rscratch1, esp);
- __ str(rscratch1, monitor_block_top); // set new monitor block top
- // store object
- __ str(r0, Address(esp, BasicObjectLock::obj_offset_in_bytes()));
- __ mov(c_rarg1, esp); // object address
- __ lock_object(c_rarg1);
-}
-
-// Generate a fixed interpreter frame. This is identical setup for
-// interpreted methods and for native methods hence the shared code.
-//
-// Args:
-// lr: return address
-// rmethod: Method*
-// rlocals: pointer to locals
-// rcpool: cp cache
-// stack_pointer: previous sp
-void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) {
- // initialize fixed part of activation frame
- if (native_call) {
- __ sub(esp, sp, 12 * wordSize);
- __ mov(rbcp, zr);
- __ stp(esp, zr, Address(__ pre(sp, -12 * wordSize)));
- // add 2 zero-initialized slots for native calls
- __ stp(zr, zr, Address(sp, 10 * wordSize));
- } else {
- __ sub(esp, sp, 10 * wordSize);
- __ ldr(rscratch1, Address(rmethod, Method::const_offset())); // get ConstMethod
- __ add(rbcp, rscratch1, in_bytes(ConstMethod::codes_offset())); // get codebase
- __ stp(esp, rbcp, Address(__ pre(sp, -10 * wordSize)));
- }
-
- if (ProfileInterpreter) {
- Label method_data_continue;
- __ ldr(rscratch1, Address(rmethod, Method::method_data_offset()));
- __ cbz(rscratch1, method_data_continue);
- __ lea(rscratch1, Address(rscratch1, in_bytes(MethodData::data_offset())));
- __ bind(method_data_continue);
- __ stp(rscratch1, rmethod, Address(sp, 4 * wordSize)); // save Method* and mdp (method data pointer)
- } else {
- __ stp(zr, rmethod, Address(sp, 4 * wordSize)); // save Method* (no mdp)
- }
-
- __ ldr(rcpool, Address(rmethod, Method::const_offset()));
- __ ldr(rcpool, Address(rcpool, ConstMethod::constants_offset()));
- __ ldr(rcpool, Address(rcpool, ConstantPool::cache_offset_in_bytes()));
- __ stp(rlocals, rcpool, Address(sp, 2 * wordSize));
-
- __ stp(rfp, lr, Address(sp, 8 * wordSize));
- __ lea(rfp, Address(sp, 8 * wordSize));
-
- // set sender sp
- // leave last_sp as null
- __ stp(zr, r13, Address(sp, 6 * wordSize));
-
- // Move SP out of the way
- if (! native_call) {
- __ ldr(rscratch1, Address(rmethod, Method::const_offset()));
- __ ldrh(rscratch1, Address(rscratch1, ConstMethod::max_stack_offset()));
- __ add(rscratch1, rscratch1, frame::interpreter_frame_monitor_size() + 2);
- __ sub(rscratch1, sp, rscratch1, ext::uxtw, 3);
- __ andr(sp, rscratch1, -16);
- }
-}
-
-// End of helpers
-
-// Various method entries
-//------------------------------------------------------------------------------------------------------------------------
-//
-//
-
-// Method entry for java.lang.ref.Reference.get.
-address InterpreterGenerator::generate_Reference_get_entry(void) {
-#if INCLUDE_ALL_GCS
- // Code: _aload_0, _getfield, _areturn
- // parameter size = 1
- //
- // The code that gets generated by this routine is split into 2 parts:
- // 1. The "intrinsified" code for G1 (or any SATB based GC),
- // 2. The slow path - which is an expansion of the regular method entry.
- //
- // Notes:-
- // * In the G1 code we do not check whether we need to block for
- // a safepoint. If G1 is enabled then we must execute the specialized
- // code for Reference.get (except when the Reference object is null)
- // so that we can log the value in the referent field with an SATB
- // update buffer.
- // If the code for the getfield template is modified so that the
- // G1 pre-barrier code is executed when the current method is
- // Reference.get() then going through the normal method entry
- // will be fine.
- // * The G1 code can, however, check the receiver object (the instance
- // of java.lang.Reference) and jump to the slow path if null. If the
- // Reference object is null then we obviously cannot fetch the referent
- // and so we don't need to call the G1 pre-barrier. Thus we can use the
- // regular method entry code to generate the NPE.
- //
- // This code is based on generate_accessor_enty.
- //
- // rmethod: Method*
- // r13: senderSP must preserve for slow path, set SP to it on fast path
-
- address entry = __ pc();
-
- const int referent_offset = java_lang_ref_Reference::referent_offset;
- guarantee(referent_offset > 0, "referent offset not initialized");
-
- if (UseG1GC) {
- Label slow_path;
- const Register local_0 = c_rarg0;
- // Check if local 0 != NULL
- // If the receiver is null then it is OK to jump to the slow path.
- __ ldr(local_0, Address(esp, 0));
- __ cbz(local_0, slow_path);
-
-
- // Load the value of the referent field.
- const Address field_address(local_0, referent_offset);
- __ load_heap_oop(local_0, field_address);
-
- // Generate the G1 pre-barrier code to log the value of
- // the referent field in an SATB buffer.
- __ enter(); // g1_write may call runtime
- __ g1_write_barrier_pre(noreg /* obj */,
- local_0 /* pre_val */,
- rthread /* thread */,
- rscratch2 /* tmp */,
- true /* tosca_live */,
- true /* expand_call */);
- __ leave();
- // areturn
- __ andr(sp, r13, -16); // done with stack
- __ ret(lr);
-
- // generate a vanilla interpreter entry as the slow path
- __ bind(slow_path);
- __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::zerolocals));
- return entry;
- }
-#endif // INCLUDE_ALL_GCS
-
- // If G1 is not enabled then attempt to go through the accessor entry point
- // Reference.get is an accessor
- return generate_accessor_entry();
-}
-
-/**
- * Method entry for static native methods:
- * int java.util.zip.CRC32.update(int crc, int b)
- */
-address InterpreterGenerator::generate_CRC32_update_entry() {
- if (UseCRC32Intrinsics) {
- address entry = __ pc();
-
- // rmethod: Method*
- // r13: senderSP must preserved for slow path
- // esp: args
-
- Label slow_path;
- // If we need a safepoint check, generate full interpreter entry.
- ExternalAddress state(SafepointSynchronize::address_of_state());
- unsigned long offset;
- __ adrp(rscratch1, ExternalAddress(SafepointSynchronize::address_of_state()), offset);
- __ ldrw(rscratch1, Address(rscratch1, offset));
- assert(SafepointSynchronize::_not_synchronized == 0, "rewrite this code");
- __ cbnz(rscratch1, slow_path);
-
- // We don't generate local frame and don't align stack because
- // we call stub code and there is no safepoint on this path.
-
- // Load parameters
- const Register crc = c_rarg0; // crc
- const Register val = c_rarg1; // source java byte value
- const Register tbl = c_rarg2; // scratch
-
- // Arguments are reversed on java expression stack
- __ ldrw(val, Address(esp, 0)); // byte value
- __ ldrw(crc, Address(esp, wordSize)); // Initial CRC
-
- __ adrp(tbl, ExternalAddress(StubRoutines::crc_table_addr()), offset);
- __ add(tbl, tbl, offset);
-
- __ ornw(crc, zr, crc); // ~crc
- __ update_byte_crc32(crc, val, tbl);
- __ ornw(crc, zr, crc); // ~crc
-
- // result in c_rarg0
-
- __ andr(sp, r13, -16);
- __ ret(lr);
-
- // generate a vanilla native entry as the slow path
- __ bind(slow_path);
- __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::native));
- return entry;
- }
- return NULL;
-}
-
-/**
- * Method entry for static native methods:
- * int java.util.zip.CRC32.updateBytes(int crc, byte[] b, int off, int len)
- * int java.util.zip.CRC32.updateByteBuffer(int crc, long buf, int off, int len)
- */
-address InterpreterGenerator::generate_CRC32_updateBytes_entry(AbstractInterpreter::MethodKind kind) {
- if (UseCRC32Intrinsics) {
- address entry = __ pc();
-
- // rmethod,: Method*
- // r13: senderSP must preserved for slow path
-
- Label slow_path;
- // If we need a safepoint check, generate full interpreter entry.
- ExternalAddress state(SafepointSynchronize::address_of_state());
- unsigned long offset;
- __ adrp(rscratch1, ExternalAddress(SafepointSynchronize::address_of_state()), offset);
- __ ldrw(rscratch1, Address(rscratch1, offset));
- assert(SafepointSynchronize::_not_synchronized == 0, "rewrite this code");
- __ cbnz(rscratch1, slow_path);
-
- // We don't generate local frame and don't align stack because
- // we call stub code and there is no safepoint on this path.
-
- // Load parameters
- const Register crc = c_rarg0; // crc
- const Register buf = c_rarg1; // source java byte array address
- const Register len = c_rarg2; // length
- const Register off = len; // offset (never overlaps with 'len')
-
- // Arguments are reversed on java expression stack
- // Calculate address of start element
- if (kind == Interpreter::java_util_zip_CRC32_updateByteBuffer) {
- __ ldr(buf, Address(esp, 2*wordSize)); // long buf
- __ ldrw(off, Address(esp, wordSize)); // offset
- __ add(buf, buf, off); // + offset
- __ ldrw(crc, Address(esp, 4*wordSize)); // Initial CRC
- } else {
- __ ldr(buf, Address(esp, 2*wordSize)); // byte[] array
- __ add(buf, buf, arrayOopDesc::base_offset_in_bytes(T_BYTE)); // + header size
- __ ldrw(off, Address(esp, wordSize)); // offset
- __ add(buf, buf, off); // + offset
- __ ldrw(crc, Address(esp, 3*wordSize)); // Initial CRC
- }
- // Can now load 'len' since we're finished with 'off'
- __ ldrw(len, Address(esp, 0x0)); // Length
-
- __ andr(sp, r13, -16); // Restore the caller's SP
-
- // We are frameless so we can just jump to the stub.
- __ b(CAST_FROM_FN_PTR(address, StubRoutines::updateBytesCRC32()));
-
- // generate a vanilla native entry as the slow path
- __ bind(slow_path);
- __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::native));
- return entry;
- }
- return NULL;
-}
-
-void InterpreterGenerator::bang_stack_shadow_pages(bool native_call) {
- // Bang each page in the shadow zone. We can't assume it's been done for
- // an interpreter frame with greater than a page of locals, so each page
- // needs to be checked. Only true for non-native.
- if (UseStackBanging) {
- const int start_page = native_call ? StackShadowPages : 1;
- const int page_size = os::vm_page_size();
- for (int pages = start_page; pages <= StackShadowPages ; pages++) {
- __ sub(rscratch2, sp, pages*page_size);
- __ str(zr, Address(rscratch2));
- }
- }
-}
-
-
-// Interpreter stub for calling a native method. (asm interpreter)
-// This sets up a somewhat different looking stack for calling the
-// native method than the typical interpreter frame setup.
-address InterpreterGenerator::generate_native_entry(bool synchronized) {
- // determine code generation flags
- bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods;
-
- // r1: Method*
- // rscratch1: sender sp
-
- address entry_point = __ pc();
-
- const Address constMethod (rmethod, Method::const_offset());
- const Address access_flags (rmethod, Method::access_flags_offset());
- const Address size_of_parameters(r2, ConstMethod::
- size_of_parameters_offset());
-
- // get parameter size (always needed)
- __ ldr(r2, constMethod);
- __ load_unsigned_short(r2, size_of_parameters);
-
- // native calls don't need the stack size check since they have no
- // expression stack and the arguments are already on the stack and
- // we only add a handful of words to the stack
-
- // rmethod: Method*
- // r2: size of parameters
- // rscratch1: sender sp
-
- // for natives the size of locals is zero
-
- // compute beginning of parameters (rlocals)
- __ add(rlocals, esp, r2, ext::uxtx, 3);
- __ add(rlocals, rlocals, -wordSize);
-
- // Pull SP back to minimum size: this avoids holes in the stack
- __ andr(sp, esp, -16);
-
- // initialize fixed part of activation frame
- generate_fixed_frame(true);
-#ifndef PRODUCT
- // tell the simulator that a method has been entered
- if (NotifySimulator) {
- __ notify(Assembler::method_entry);
- }
-#endif
-
- // make sure method is native & not abstract
-#ifdef ASSERT
- __ ldrw(r0, access_flags);
- {
- Label L;
- __ tst(r0, JVM_ACC_NATIVE);
- __ br(Assembler::NE, L);
- __ stop("tried to execute non-native method as native");
- __ bind(L);
- }
- {
- Label L;
- __ tst(r0, JVM_ACC_ABSTRACT);
- __ br(Assembler::EQ, L);
- __ stop("tried to execute abstract method in interpreter");
- __ bind(L);
- }
-#endif
-
- // Since at this point in the method invocation the exception
- // handler would try to exit the monitor of synchronized methods
- // which hasn't been entered yet, we set the thread local variable
- // _do_not_unlock_if_synchronized to true. The remove_activation
- // will check this flag.
-
- const Address do_not_unlock_if_synchronized(rthread,
- in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()));
- __ mov(rscratch2, true);
- __ strb(rscratch2, do_not_unlock_if_synchronized);
-
- // increment invocation count & check for overflow
- Label invocation_counter_overflow;
- if (inc_counter) {
- generate_counter_incr(&invocation_counter_overflow, NULL, NULL);
- }
-
- Label continue_after_compile;
- __ bind(continue_after_compile);
-
- bang_stack_shadow_pages(true);
-
- // reset the _do_not_unlock_if_synchronized flag
- __ strb(zr, do_not_unlock_if_synchronized);
-
- // check for synchronized methods
- // Must happen AFTER invocation_counter check and stack overflow check,
- // so method is not locked if overflows.
- if (synchronized) {
- lock_method();
- } else {
- // no synchronization necessary
-#ifdef ASSERT
- {
- Label L;
- __ ldrw(r0, access_flags);
- __ tst(r0, JVM_ACC_SYNCHRONIZED);
- __ br(Assembler::EQ, L);
- __ stop("method needs synchronization");
- __ bind(L);
- }
-#endif
- }
-
- // start execution
-#ifdef ASSERT
- {
- Label L;
- const Address monitor_block_top(rfp,
- frame::interpreter_frame_monitor_block_top_offset * wordSize);
- __ ldr(rscratch1, monitor_block_top);
- __ cmp(esp, rscratch1);
- __ br(Assembler::EQ, L);
- __ stop("broken stack frame setup in interpreter");
- __ bind(L);
- }
-#endif
-
- // jvmti support
- __ notify_method_entry();
-
- // work registers
- const Register t = r17;
- const Register result_handler = r19;
-
- // allocate space for parameters
- __ ldr(t, Address(rmethod, Method::const_offset()));
- __ load_unsigned_short(t, Address(t, ConstMethod::size_of_parameters_offset()));
-
- __ sub(rscratch1, esp, t, ext::uxtx, Interpreter::logStackElementSize);
- __ andr(sp, rscratch1, -16);
- __ mov(esp, rscratch1);
-
- // get signature handler
- {
- Label L;
- __ ldr(t, Address(rmethod, Method::signature_handler_offset()));
- __ cbnz(t, L);
- __ call_VM(noreg,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::prepare_native_call),
- rmethod);
- __ ldr(t, Address(rmethod, Method::signature_handler_offset()));
- __ bind(L);
- }
-
- // call signature handler
- assert(InterpreterRuntime::SignatureHandlerGenerator::from() == rlocals,
- "adjust this code");
- assert(InterpreterRuntime::SignatureHandlerGenerator::to() == sp,
- "adjust this code");
- assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == rscratch1,
- "adjust this code");
-
- // The generated handlers do not touch rmethod (the method).
- // However, large signatures cannot be cached and are generated
- // each time here. The slow-path generator can do a GC on return,
- // so we must reload it after the call.
- __ blr(t);
- __ get_method(rmethod); // slow path can do a GC, reload rmethod
-
-
- // result handler is in r0
- // set result handler
- __ mov(result_handler, r0);
- // pass mirror handle if static call
- {
- Label L;
- const int mirror_offset = in_bytes(Klass::java_mirror_offset());
- __ ldrw(t, Address(rmethod, Method::access_flags_offset()));
- __ tst(t, JVM_ACC_STATIC);
- __ br(Assembler::EQ, L);
- // get mirror
- __ ldr(t, Address(rmethod, Method::const_offset()));
- __ ldr(t, Address(t, ConstMethod::constants_offset()));
- __ ldr(t, Address(t, ConstantPool::pool_holder_offset_in_bytes()));
- __ ldr(t, Address(t, mirror_offset));
- // copy mirror into activation frame
- __ str(t, Address(rfp, frame::interpreter_frame_oop_temp_offset * wordSize));
- // pass handle to mirror
- __ add(c_rarg1, rfp, frame::interpreter_frame_oop_temp_offset * wordSize);
- __ bind(L);
- }
-
- // get native function entry point in r10
- {
- Label L;
- __ ldr(r10, Address(rmethod, Method::native_function_offset()));
- address unsatisfied = (SharedRuntime::native_method_throw_unsatisfied_link_error_entry());
- __ mov(rscratch2, unsatisfied);
- __ ldr(rscratch2, rscratch2);
- __ cmp(r10, rscratch2);
- __ br(Assembler::NE, L);
- __ call_VM(noreg,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::prepare_native_call),
- rmethod);
- __ get_method(rmethod);
- __ ldr(r10, Address(rmethod, Method::native_function_offset()));
- __ bind(L);
- }
-
- // pass JNIEnv
- __ add(c_rarg0, rthread, in_bytes(JavaThread::jni_environment_offset()));
-
- // It is enough that the pc() points into the right code
- // segment. It does not have to be the correct return pc.
- __ set_last_Java_frame(esp, rfp, (address)NULL, rscratch1);
-
- // change thread state
-#ifdef ASSERT
- {
- Label L;
- __ ldrw(t, Address(rthread, JavaThread::thread_state_offset()));
- __ cmp(t, _thread_in_Java);
- __ br(Assembler::EQ, L);
- __ stop("Wrong thread state in native stub");
- __ bind(L);
- }
-#endif
-
- // Change state to native
- __ mov(rscratch1, _thread_in_native);
- __ lea(rscratch2, Address(rthread, JavaThread::thread_state_offset()));
- __ stlrw(rscratch1, rscratch2);
-
- // Call the native method.
- __ blrt(r10, rscratch1);
- __ maybe_isb();
- __ get_method(rmethod);
- // result potentially in r0 or v0
-
- // make room for the pushes we're about to do
- __ sub(rscratch1, esp, 4 * wordSize);
- __ andr(sp, rscratch1, -16);
-
- // NOTE: The order of these pushes is known to frame::interpreter_frame_result
- // in order to extract the result of a method call. If the order of these
- // pushes change or anything else is added to the stack then the code in
- // interpreter_frame_result must also change.
- __ push(dtos);
- __ push(ltos);
-
- // change thread state
- __ mov(rscratch1, _thread_in_native_trans);
- __ lea(rscratch2, Address(rthread, JavaThread::thread_state_offset()));
- __ stlrw(rscratch1, rscratch2);
-
- if (os::is_MP()) {
- if (UseMembar) {
- // Force this write out before the read below
- __ dsb(Assembler::SY);
- } else {
- // Write serialization page so VM thread can do a pseudo remote membar.
- // We use the current thread pointer to calculate a thread specific
- // offset to write to within the page. This minimizes bus traffic
- // due to cache line collision.
- __ serialize_memory(rthread, rscratch2);
- }
- }
-
- // check for safepoint operation in progress and/or pending suspend requests
- {
- Label Continue;
- {
- unsigned long offset;
- __ adrp(rscratch2, SafepointSynchronize::address_of_state(), offset);
- __ ldrw(rscratch2, Address(rscratch2, offset));
- }
- assert(SafepointSynchronize::_not_synchronized == 0,
- "SafepointSynchronize::_not_synchronized");
- Label L;
- __ cbnz(rscratch2, L);
- __ ldrw(rscratch2, Address(rthread, JavaThread::suspend_flags_offset()));
- __ cbz(rscratch2, Continue);
- __ bind(L);
-
- // Don't use call_VM as it will see a possible pending exception
- // and forward it and never return here preventing us from
- // clearing _last_native_pc down below. So we do a runtime call by
- // hand.
- //
- __ mov(c_rarg0, rthread);
- __ mov(rscratch2, CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans));
- __ blrt(rscratch2, 1, 0, 0);
- __ maybe_isb();
- __ get_method(rmethod);
- __ reinit_heapbase();
- __ bind(Continue);
- }
-
- // change thread state
- __ mov(rscratch1, _thread_in_Java);
- __ lea(rscratch2, Address(rthread, JavaThread::thread_state_offset()));
- __ stlrw(rscratch1, rscratch2);
-
- // reset_last_Java_frame
- __ reset_last_Java_frame(true, true);
-
- // reset handle block
- __ ldr(t, Address(rthread, JavaThread::active_handles_offset()));
- __ str(zr, Address(t, JNIHandleBlock::top_offset_in_bytes()));
-
- // If result is an oop unbox and store it in frame where gc will see it
- // and result handler will pick it up
-
- {
- Label no_oop, store_result;
- __ adr(t, ExternalAddress(AbstractInterpreter::result_handler(T_OBJECT)));
- __ cmp(t, result_handler);
- __ br(Assembler::NE, no_oop);
- // retrieve result
- __ pop(ltos);
- __ cbz(r0, store_result);
- __ ldr(r0, Address(r0, 0));
- __ bind(store_result);
- __ str(r0, Address(rfp, frame::interpreter_frame_oop_temp_offset*wordSize));
- // keep stack depth as expected by pushing oop which will eventually be discarded
- __ push(ltos);
- __ bind(no_oop);
- }
-
- {
- Label no_reguard;
- __ lea(rscratch1, Address(rthread, in_bytes(JavaThread::stack_guard_state_offset())));
- __ ldrb(rscratch1, Address(rscratch1));
- __ cmp(rscratch1, JavaThread::stack_guard_yellow_disabled);
- __ br(Assembler::NE, no_reguard);
-
- __ pusha(); // XXX only save smashed registers
- __ mov(c_rarg0, rthread);
- __ mov(rscratch2, CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages));
- __ blrt(rscratch2, 0, 0, 0);
- __ popa(); // XXX only restore smashed registers
- __ bind(no_reguard);
- }
-
- // The method register is junk from after the thread_in_native transition
- // until here. Also can't call_VM until the bcp has been
- // restored. Need bcp for throwing exception below so get it now.
- __ get_method(rmethod);
-
- // restore bcp to have legal interpreter frame, i.e., bci == 0 <=>
- // rbcp == code_base()
- __ ldr(rbcp, Address(rmethod, Method::const_offset())); // get ConstMethod*
- __ add(rbcp, rbcp, in_bytes(ConstMethod::codes_offset())); // get codebase
- // handle exceptions (exception handling will handle unlocking!)
- {
- Label L;
- __ ldr(rscratch1, Address(rthread, Thread::pending_exception_offset()));
- __ cbz(rscratch1, L);
- // Note: At some point we may want to unify this with the code
- // used in call_VM_base(); i.e., we should use the
- // StubRoutines::forward_exception code. For now this doesn't work
- // here because the rsp is not correctly set at this point.
- __ MacroAssembler::call_VM(noreg,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::throw_pending_exception));
- __ should_not_reach_here();
- __ bind(L);
- }
-
- // do unlocking if necessary
- {
- Label L;
- __ ldrw(t, Address(rmethod, Method::access_flags_offset()));
- __ tst(t, JVM_ACC_SYNCHRONIZED);
- __ br(Assembler::EQ, L);
- // the code below should be shared with interpreter macro
- // assembler implementation
- {
- Label unlock;
- // BasicObjectLock will be first in list, since this is a
- // synchronized method. However, need to check that the object
- // has not been unlocked by an explicit monitorexit bytecode.
-
- // monitor expect in c_rarg1 for slow unlock path
- __ lea (c_rarg1, Address(rfp, // address of first monitor
- (intptr_t)(frame::interpreter_frame_initial_sp_offset *
- wordSize - sizeof(BasicObjectLock))));
-
- __ ldr(t, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes()));
- __ cbnz(t, unlock);
-
- // Entry already unlocked, need to throw exception
- __ MacroAssembler::call_VM(noreg,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::throw_illegal_monitor_state_exception));
- __ should_not_reach_here();
-
- __ bind(unlock);
- __ unlock_object(c_rarg1);
- }
- __ bind(L);
- }
-
- // jvmti support
- // Note: This must happen _after_ handling/throwing any exceptions since
- // the exception handler code notifies the runtime of method exits
- // too. If this happens before, method entry/exit notifications are
- // not properly paired (was bug - gri 11/22/99).
- __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI);
-
- // restore potential result in r0:d0, call result handler to
- // restore potential result in ST0 & handle result
-
- __ pop(ltos);
- __ pop(dtos);
-
- __ blr(result_handler);
-
- // remove activation
- __ ldr(esp, Address(rfp,
- frame::interpreter_frame_sender_sp_offset *
- wordSize)); // get sender sp
- // remove frame anchor
- __ leave();
-
- // resture sender sp
- __ mov(sp, esp);
-
- __ ret(lr);
-
- if (inc_counter) {
- // Handle overflow of counter and compile method
- __ bind(invocation_counter_overflow);
- generate_counter_overflow(&continue_after_compile);
- }
-
- return entry_point;
-}
-
-//
-// Generic interpreted method entry to (asm) interpreter
-//
-address InterpreterGenerator::generate_normal_entry(bool synchronized) {
- // determine code generation flags
- bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods;
-
- // rscratch1: sender sp
- address entry_point = __ pc();
-
- const Address constMethod(rmethod, Method::const_offset());
- const Address access_flags(rmethod, Method::access_flags_offset());
- const Address size_of_parameters(r3,
- ConstMethod::size_of_parameters_offset());
- const Address size_of_locals(r3, ConstMethod::size_of_locals_offset());
-
- // get parameter size (always needed)
- // need to load the const method first
- __ ldr(r3, constMethod);
- __ load_unsigned_short(r2, size_of_parameters);
-
- // r2: size of parameters
-
- __ load_unsigned_short(r3, size_of_locals); // get size of locals in words
- __ sub(r3, r3, r2); // r3 = no. of additional locals
-
- // see if we've got enough room on the stack for locals plus overhead.
- generate_stack_overflow_check();
-
- // compute beginning of parameters (rlocals)
- __ add(rlocals, esp, r2, ext::uxtx, 3);
- __ sub(rlocals, rlocals, wordSize);
-
- // Make room for locals
- __ sub(rscratch1, esp, r3, ext::uxtx, 3);
- __ andr(sp, rscratch1, -16);
-
- // r3 - # of additional locals
- // allocate space for locals
- // explicitly initialize locals
- {
- Label exit, loop;
- __ ands(zr, r3, r3);
- __ br(Assembler::LE, exit); // do nothing if r3 <= 0
- __ bind(loop);
- __ str(zr, Address(__ post(rscratch1, wordSize)));
- __ sub(r3, r3, 1); // until everything initialized
- __ cbnz(r3, loop);
- __ bind(exit);
- }
-
- // And the base dispatch table
- __ get_dispatch();
-
- // initialize fixed part of activation frame
- generate_fixed_frame(false);
-#ifndef PRODUCT
- // tell the simulator that a method has been entered
- if (NotifySimulator) {
- __ notify(Assembler::method_entry);
- }
-#endif
- // make sure method is not native & not abstract
-#ifdef ASSERT
- __ ldrw(r0, access_flags);
- {
- Label L;
- __ tst(r0, JVM_ACC_NATIVE);
- __ br(Assembler::EQ, L);
- __ stop("tried to execute native method as non-native");
- __ bind(L);
- }
- {
- Label L;
- __ tst(r0, JVM_ACC_ABSTRACT);
- __ br(Assembler::EQ, L);
- __ stop("tried to execute abstract method in interpreter");
- __ bind(L);
- }
-#endif
-
- // Since at this point in the method invocation the exception
- // handler would try to exit the monitor of synchronized methods
- // which hasn't been entered yet, we set the thread local variable
- // _do_not_unlock_if_synchronized to true. The remove_activation
- // will check this flag.
-
- const Address do_not_unlock_if_synchronized(rthread,
- in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()));
- __ mov(rscratch2, true);
- __ strb(rscratch2, do_not_unlock_if_synchronized);
-
- // increment invocation count & check for overflow
- Label invocation_counter_overflow;
- Label profile_method;
- Label profile_method_continue;
- if (inc_counter) {
- generate_counter_incr(&invocation_counter_overflow,
- &profile_method,
- &profile_method_continue);
- if (ProfileInterpreter) {
- __ bind(profile_method_continue);
- }
- }
-
- Label continue_after_compile;
- __ bind(continue_after_compile);
-
- bang_stack_shadow_pages(false);
-
- // reset the _do_not_unlock_if_synchronized flag
- __ strb(zr, do_not_unlock_if_synchronized);
-
- // check for synchronized methods
- // Must happen AFTER invocation_counter check and stack overflow check,
- // so method is not locked if overflows.
- if (synchronized) {
- // Allocate monitor and lock method
- lock_method();
- } else {
- // no synchronization necessary
-#ifdef ASSERT
- {
- Label L;
- __ ldrw(r0, access_flags);
- __ tst(r0, JVM_ACC_SYNCHRONIZED);
- __ br(Assembler::EQ, L);
- __ stop("method needs synchronization");
- __ bind(L);
- }
-#endif
- }
-
- // start execution
-#ifdef ASSERT
- {
- Label L;
- const Address monitor_block_top (rfp,
- frame::interpreter_frame_monitor_block_top_offset * wordSize);
- __ ldr(rscratch1, monitor_block_top);
- __ cmp(esp, rscratch1);
- __ br(Assembler::EQ, L);
- __ stop("broken stack frame setup in interpreter");
- __ bind(L);
- }
-#endif
-
- // jvmti support
- __ notify_method_entry();
-
- __ dispatch_next(vtos);
-
- // invocation counter overflow
- if (inc_counter) {
- if (ProfileInterpreter) {
- // We have decided to profile this method in the interpreter
- __ bind(profile_method);
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method));
- __ set_method_data_pointer_for_bcp();
- // don't think we need this
- __ get_method(r1);
- __ b(profile_method_continue);
- }
- // Handle overflow of counter and compile method
- __ bind(invocation_counter_overflow);
- generate_counter_overflow(&continue_after_compile);
- }
-
- return entry_point;
-}
-
// These should never be compiled since the interpreter will prefer
// the compiled version to the intrinsic version.
bool AbstractInterpreter::can_be_compiled(methodHandle m) {
@@ -1593,483 +178,3 @@
*interpreter_frame->interpreter_frame_cache_addr() =
method->constants()->cache();
}
-
-
-//-----------------------------------------------------------------------------
-// Exceptions
-
-void TemplateInterpreterGenerator::generate_throw_exception() {
- // Entry point in previous activation (i.e., if the caller was
- // interpreted)
- Interpreter::_rethrow_exception_entry = __ pc();
- // Restore sp to interpreter_frame_last_sp even though we are going
- // to empty the expression stack for the exception processing.
- __ str(zr, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize));
- // r0: exception
- // r3: return address/pc that threw exception
- __ restore_bcp(); // rbcp points to call/send
- __ restore_locals();
- __ restore_constant_pool_cache();
- __ reinit_heapbase(); // restore rheapbase as heapbase.
- __ get_dispatch();
-
-#ifndef PRODUCT
- // tell the simulator that the caller method has been reentered
- if (NotifySimulator) {
- __ get_method(rmethod);
- __ notify(Assembler::method_reentry);
- }
-#endif
- // Entry point for exceptions thrown within interpreter code
- Interpreter::_throw_exception_entry = __ pc();
- // If we came here via a NullPointerException on the receiver of a
- // method, rmethod may be corrupt.
- __ get_method(rmethod);
- // expression stack is undefined here
- // r0: exception
- // rbcp: exception bcp
- __ verify_oop(r0);
- __ mov(c_rarg1, r0);
-
- // expression stack must be empty before entering the VM in case of
- // an exception
- __ empty_expression_stack();
- // find exception handler address and preserve exception oop
- __ call_VM(r3,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::exception_handler_for_exception),
- c_rarg1);
-
- // Calculate stack limit
- __ ldr(rscratch1, Address(rmethod, Method::const_offset()));
- __ ldrh(rscratch1, Address(rscratch1, ConstMethod::max_stack_offset()));
- __ add(rscratch1, rscratch1, frame::interpreter_frame_monitor_size() + 4);
- __ ldr(rscratch2,
- Address(rfp, frame::interpreter_frame_initial_sp_offset * wordSize));
- __ sub(rscratch1, rscratch2, rscratch1, ext::uxtx, 3);
- __ andr(sp, rscratch1, -16);
-
- // r0: exception handler entry point
- // r3: preserved exception oop
- // rbcp: bcp for exception handler
- __ push_ptr(r3); // push exception which is now the only value on the stack
- __ br(r0); // jump to exception handler (may be _remove_activation_entry!)
-
- // If the exception is not handled in the current frame the frame is
- // removed and the exception is rethrown (i.e. exception
- // continuation is _rethrow_exception).
- //
- // Note: At this point the bci is still the bxi for the instruction
- // which caused the exception and the expression stack is
- // empty. Thus, for any VM calls at this point, GC will find a legal
- // oop map (with empty expression stack).
-
- //
- // JVMTI PopFrame support
- //
-
- Interpreter::_remove_activation_preserving_args_entry = __ pc();
- __ empty_expression_stack();
- // Set the popframe_processing bit in pending_popframe_condition
- // indicating that we are currently handling popframe, so that
- // call_VMs that may happen later do not trigger new popframe
- // handling cycles.
- __ ldrw(r3, Address(rthread, JavaThread::popframe_condition_offset()));
- __ orr(r3, r3, JavaThread::popframe_processing_bit);
- __ strw(r3, Address(rthread, JavaThread::popframe_condition_offset()));
-
- {
- // Check to see whether we are returning to a deoptimized frame.
- // (The PopFrame call ensures that the caller of the popped frame is
- // either interpreted or compiled and deoptimizes it if compiled.)
- // In this case, we can't call dispatch_next() after the frame is
- // popped, but instead must save the incoming arguments and restore
- // them after deoptimization has occurred.
- //
- // Note that we don't compare the return PC against the
- // deoptimization blob's unpack entry because of the presence of
- // adapter frames in C2.
- Label caller_not_deoptimized;
- __ ldr(c_rarg1, Address(rfp, frame::return_addr_offset * wordSize));
- __ super_call_VM_leaf(CAST_FROM_FN_PTR(address,
- InterpreterRuntime::interpreter_contains), c_rarg1);
- __ cbnz(r0, caller_not_deoptimized);
-
- // Compute size of arguments for saving when returning to
- // deoptimized caller
- __ get_method(r0);
- __ ldr(r0, Address(r0, Method::const_offset()));
- __ load_unsigned_short(r0, Address(r0, in_bytes(ConstMethod::
- size_of_parameters_offset())));
- __ lsl(r0, r0, Interpreter::logStackElementSize);
- __ restore_locals(); // XXX do we need this?
- __ sub(rlocals, rlocals, r0);
- __ add(rlocals, rlocals, wordSize);
- // Save these arguments
- __ super_call_VM_leaf(CAST_FROM_FN_PTR(address,
- Deoptimization::
- popframe_preserve_args),
- rthread, r0, rlocals);
-
- __ remove_activation(vtos,
- /* throw_monitor_exception */ false,
- /* install_monitor_exception */ false,
- /* notify_jvmdi */ false);
-
- // Inform deoptimization that it is responsible for restoring
- // these arguments
- __ mov(rscratch1, JavaThread::popframe_force_deopt_reexecution_bit);
- __ strw(rscratch1, Address(rthread, JavaThread::popframe_condition_offset()));
-
- // Continue in deoptimization handler
- __ ret(lr);
-
- __ bind(caller_not_deoptimized);
- }
-
- __ remove_activation(vtos,
- /* throw_monitor_exception */ false,
- /* install_monitor_exception */ false,
- /* notify_jvmdi */ false);
-
- // Restore the last_sp and null it out
- __ ldr(esp, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize));
- __ str(zr, Address(rfp, frame::interpreter_frame_last_sp_offset * wordSize));
-
- __ restore_bcp();
- __ restore_locals();
- __ restore_constant_pool_cache();
- __ get_method(rmethod);
-
- // The method data pointer was incremented already during
- // call profiling. We have to restore the mdp for the current bcp.
- if (ProfileInterpreter) {
- __ set_method_data_pointer_for_bcp();
- }
-
- // Clear the popframe condition flag
- __ strw(zr, Address(rthread, JavaThread::popframe_condition_offset()));
- assert(JavaThread::popframe_inactive == 0, "fix popframe_inactive");
-
-#if INCLUDE_JVMTI
- {
- Label L_done;
-
- __ ldrb(rscratch1, Address(rbcp, 0));
- __ cmpw(r1, Bytecodes::_invokestatic);
- __ br(Assembler::EQ, L_done);
-
- // The member name argument must be restored if _invokestatic is re-executed after a PopFrame call.
- // Detect such a case in the InterpreterRuntime function and return the member name argument, or NULL.
-
- __ ldr(c_rarg0, Address(rlocals, 0));
- __ call_VM(r0, CAST_FROM_FN_PTR(address, InterpreterRuntime::member_name_arg_or_null), c_rarg0, rmethod, rbcp);
-
- __ cbz(r0, L_done);
-
- __ str(r0, Address(esp, 0));
- __ bind(L_done);
- }
-#endif // INCLUDE_JVMTI
-
- // Restore machine SP
- __ ldr(rscratch1, Address(rmethod, Method::const_offset()));
- __ ldrh(rscratch1, Address(rscratch1, ConstMethod::max_stack_offset()));
- __ add(rscratch1, rscratch1, frame::interpreter_frame_monitor_size() + 4);
- __ ldr(rscratch2,
- Address(rfp, frame::interpreter_frame_initial_sp_offset * wordSize));
- __ sub(rscratch1, rscratch2, rscratch1, ext::uxtw, 3);
- __ andr(sp, rscratch1, -16);
-
- __ dispatch_next(vtos);
- // end of PopFrame support
-
- Interpreter::_remove_activation_entry = __ pc();
-
- // preserve exception over this code sequence
- __ pop_ptr(r0);
- __ str(r0, Address(rthread, JavaThread::vm_result_offset()));
- // remove the activation (without doing throws on illegalMonitorExceptions)
- __ remove_activation(vtos, false, true, false);
- // restore exception
- // restore exception
- __ get_vm_result(r0, rthread);
-
- // In between activations - previous activation type unknown yet
- // compute continuation point - the continuation point expects the
- // following registers set up:
- //
- // r0: exception
- // lr: return address/pc that threw exception
- // rsp: expression stack of caller
- // rfp: fp of caller
- // FIXME: There's no point saving LR here because VM calls don't trash it
- __ stp(r0, lr, Address(__ pre(sp, -2 * wordSize))); // save exception & return address
- __ super_call_VM_leaf(CAST_FROM_FN_PTR(address,
- SharedRuntime::exception_handler_for_return_address),
- rthread, lr);
- __ mov(r1, r0); // save exception handler
- __ ldp(r0, lr, Address(__ post(sp, 2 * wordSize))); // restore exception & return address
- // We might be returning to a deopt handler that expects r3 to
- // contain the exception pc
- __ mov(r3, lr);
- // Note that an "issuing PC" is actually the next PC after the call
- __ br(r1); // jump to exception
- // handler of caller
-}
-
-
-//
-// JVMTI ForceEarlyReturn support
-//
-address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) {
- address entry = __ pc();
-
- __ restore_bcp();
- __ restore_locals();
- __ empty_expression_stack();
- __ load_earlyret_value(state);
-
- __ ldr(rscratch1, Address(rthread, JavaThread::jvmti_thread_state_offset()));
- Address cond_addr(rscratch1, JvmtiThreadState::earlyret_state_offset());
-
- // Clear the earlyret state
- assert(JvmtiThreadState::earlyret_inactive == 0, "should be");
- __ str(zr, cond_addr);
-
- __ remove_activation(state,
- false, /* throw_monitor_exception */
- false, /* install_monitor_exception */
- true); /* notify_jvmdi */
- __ ret(lr);
-
- return entry;
-} // end of ForceEarlyReturn support
-
-
-
-//-----------------------------------------------------------------------------
-// Helper for vtos entry point generation
-
-void TemplateInterpreterGenerator::set_vtos_entry_points(Template* t,
- address& bep,
- address& cep,
- address& sep,
- address& aep,
- address& iep,
- address& lep,
- address& fep,
- address& dep,
- address& vep) {
- assert(t->is_valid() && t->tos_in() == vtos, "illegal template");
- Label L;
- aep = __ pc(); __ push_ptr(); __ b(L);
- fep = __ pc(); __ push_f(); __ b(L);
- dep = __ pc(); __ push_d(); __ b(L);
- lep = __ pc(); __ push_l(); __ b(L);
- bep = cep = sep =
- iep = __ pc(); __ push_i();
- vep = __ pc();
- __ bind(L);
- generate_and_dispatch(t);
-}
-
-//-----------------------------------------------------------------------------
-// Generation of individual instructions
-
-// helpers for generate_and_dispatch
-
-
-InterpreterGenerator::InterpreterGenerator(StubQueue* code)
- : TemplateInterpreterGenerator(code) {
- generate_all(); // down here so it can be "virtual"
-}
-
-//-----------------------------------------------------------------------------
-
-// Non-product code
-#ifndef PRODUCT
-address TemplateInterpreterGenerator::generate_trace_code(TosState state) {
- address entry = __ pc();
-
- __ push(lr);
- __ push(state);
- __ push(RegSet::range(r0, r15), sp);
- __ mov(c_rarg2, r0); // Pass itos
- __ call_VM(noreg,
- CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode),
- c_rarg1, c_rarg2, c_rarg3);
- __ pop(RegSet::range(r0, r15), sp);
- __ pop(state);
- __ pop(lr);
- __ ret(lr); // return from result handler
-
- return entry;
-}
-
-void TemplateInterpreterGenerator::count_bytecode() {
- Register rscratch3 = r0;
- __ push(rscratch1);
- __ push(rscratch2);
- __ push(rscratch3);
- Label L;
- __ mov(rscratch2, (address) &BytecodeCounter::_counter_value);
- __ bind(L);
- __ ldxr(rscratch1, rscratch2);
- __ add(rscratch1, rscratch1, 1);
- __ stxr(rscratch3, rscratch1, rscratch2);
- __ cbnzw(rscratch3, L);
- __ pop(rscratch3);
- __ pop(rscratch2);
- __ pop(rscratch1);
-}
-
-void TemplateInterpreterGenerator::histogram_bytecode(Template* t) { ; }
-
-void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) { ; }
-
-
-void TemplateInterpreterGenerator::trace_bytecode(Template* t) {
- // Call a little run-time stub to avoid blow-up for each bytecode.
- // The run-time runtime saves the right registers, depending on
- // the tosca in-state for the given template.
-
- assert(Interpreter::trace_code(t->tos_in()) != NULL,
- "entry must have been generated");
- __ bl(Interpreter::trace_code(t->tos_in()));
- __ reinit_heapbase();
-}
-
-
-void TemplateInterpreterGenerator::stop_interpreter_at() {
- Label L;
- __ push(rscratch1);
- __ mov(rscratch1, (address) &BytecodeCounter::_counter_value);
- __ ldr(rscratch1, Address(rscratch1));
- __ mov(rscratch2, StopInterpreterAt);
- __ cmpw(rscratch1, rscratch2);
- __ br(Assembler::NE, L);
- __ brk(0);
- __ bind(L);
- __ pop(rscratch1);
-}
-
-#ifdef BUILTIN_SIM
-
-#include <sys/mman.h>
-#include <unistd.h>
-
-extern "C" {
- static int PAGESIZE = getpagesize();
- int is_mapped_address(u_int64_t address)
- {
- address = (address & ~((u_int64_t)PAGESIZE - 1));
- if (msync((void *)address, PAGESIZE, MS_ASYNC) == 0) {
- return true;
- }
- if (errno != ENOMEM) {
- return true;
- }
- return false;
- }
-
- void bccheck1(u_int64_t pc, u_int64_t fp, char *method, int *bcidx, int *framesize, char *decode)
- {
- if (method != 0) {
- method[0] = '\0';
- }
- if (bcidx != 0) {
- *bcidx = -2;
- }
- if (decode != 0) {
- decode[0] = 0;
- }
-
- if (framesize != 0) {
- *framesize = -1;
- }
-
- if (Interpreter::contains((address)pc)) {
- AArch64Simulator *sim = AArch64Simulator::get_current(UseSimulatorCache, DisableBCCheck);
- Method* meth;
- address bcp;
- if (fp) {
-#define FRAME_SLOT_METHOD 3
-#define FRAME_SLOT_BCP 7
- meth = (Method*)sim->getMemory()->loadU64(fp - (FRAME_SLOT_METHOD << 3));
- bcp = (address)sim->getMemory()->loadU64(fp - (FRAME_SLOT_BCP << 3));
-#undef FRAME_SLOT_METHOD
-#undef FRAME_SLOT_BCP
- } else {
- meth = (Method*)sim->getCPUState().xreg(RMETHOD, 0);
- bcp = (address)sim->getCPUState().xreg(RBCP, 0);
- }
- if (meth->is_native()) {
- return;
- }
- if(method && meth->is_method()) {
- ResourceMark rm;
- method[0] = 'I';
- method[1] = ' ';
- meth->name_and_sig_as_C_string(method + 2, 398);
- }
- if (bcidx) {
- if (meth->contains(bcp)) {
- *bcidx = meth->bci_from(bcp);
- } else {
- *bcidx = -2;
- }
- }
- if (decode) {
- if (!BytecodeTracer::closure()) {
- BytecodeTracer::set_closure(BytecodeTracer::std_closure());
- }
- stringStream str(decode, 400);
- BytecodeTracer::trace(meth, bcp, &str);
- }
- } else {
- if (method) {
- CodeBlob *cb = CodeCache::find_blob((address)pc);
- if (cb != NULL) {
- if (cb->is_nmethod()) {
- ResourceMark rm;
- nmethod* nm = (nmethod*)cb;
- method[0] = 'C';
- method[1] = ' ';
- nm->method()->name_and_sig_as_C_string(method + 2, 398);
- } else if (cb->is_adapter_blob()) {
- strcpy(method, "B adapter blob");
- } else if (cb->is_runtime_stub()) {
- strcpy(method, "B runtime stub");
- } else if (cb->is_exception_stub()) {
- strcpy(method, "B exception stub");
- } else if (cb->is_deoptimization_stub()) {
- strcpy(method, "B deoptimization stub");
- } else if (cb->is_safepoint_stub()) {
- strcpy(method, "B safepoint stub");
- } else if (cb->is_uncommon_trap_stub()) {
- strcpy(method, "B uncommon trap stub");
- } else if (cb->contains((address)StubRoutines::call_stub())) {
- strcpy(method, "B call stub");
- } else {
- strcpy(method, "B unknown blob : ");
- strcat(method, cb->name());
- }
- if (framesize != NULL) {
- *framesize = cb->frame_size();
- }
- }
- }
- }
- }
-
-
- JNIEXPORT void bccheck(u_int64_t pc, u_int64_t fp, char *method, int *bcidx, int *framesize, char *decode)
- {
- bccheck1(pc, fp, method, bcidx, framesize, decode);
- }
-}
-
-#endif // BUILTIN_SIM
-#endif // !PRODUCT
-#endif // ! CC_INTERP
--- a/hotspot/src/cpu/ppc/vm/interpreter_ppc.cpp Sat Dec 05 15:17:29 2015 +0100
+++ b/hotspot/src/cpu/ppc/vm/interpreter_ppc.cpp Sat Dec 05 17:14:02 2015 +0000
@@ -39,7 +39,6 @@
#include "prims/jvmtiThreadState.hpp"
#include "prims/methodHandles.hpp"
#include "runtime/arguments.hpp"
-#include "runtime/deoptimization.hpp"
#include "runtime/frame.inline.hpp"
#include "runtime/sharedRuntime.hpp"
#include "runtime/stubRoutines.hpp"
@@ -61,26 +60,6 @@
#define BIND(label) bind(label); BLOCK_COMMENT(#label ":")
-int AbstractInterpreter::BasicType_as_index(BasicType type) {
- int i = 0;
- switch (type) {
- case T_BOOLEAN: i = 0; break;
- case T_CHAR : i = 1; break;
- case T_BYTE : i = 2; break;
- case T_SHORT : i = 3; break;
- case T_INT : i = 4; break;
- case T_LONG : i = 5; break;
- case T_VOID : i = 6; break;
- case T_FLOAT : i = 7; break;
- case T_DOUBLE : i = 8; break;
- case T_OBJECT : i = 9; break;
- case T_ARRAY : i = 9; break;
- default : ShouldNotReachHere();
- }
- assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, "index out of bounds");
- return i;
-}
-
address AbstractInterpreterGenerator::generate_slow_signature_handler() {
// Slow_signature handler that respects the PPC C calling conventions.
//
@@ -579,18 +558,3 @@
return NULL;
}
-
-void Deoptimization::unwind_callee_save_values(frame* f, vframeArray* vframe_array) {
- // This code is sort of the equivalent of C2IAdapter::setup_stack_frame back in
- // the days we had adapter frames. When we deoptimize a situation where a
- // compiled caller calls a compiled caller will have registers it expects
- // to survive the call to the callee. If we deoptimize the callee the only
- // way we can restore these registers is to have the oldest interpreter
- // frame that we create restore these values. That is what this routine
- // will accomplish.
-
- // At the moment we have modified c2 to not have any callee save registers
- // so this problem does not exist and this routine is just a place holder.
-
- assert(f->is_interpreted_frame(), "must be interpreted");
-}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/cpu/ppc/vm/templateInterpreterGenerator_ppc.cpp Sat Dec 05 17:14:02 2015 +0000
@@ -0,0 +1,1802 @@
+/*
+ * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015 SAP AG. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#ifndef CC_INTERP
+#include "asm/macroAssembler.inline.hpp"
+#include "interpreter/bytecodeHistogram.hpp"
+#include "interpreter/interpreter.hpp"
+#include "interpreter/interpreterGenerator.hpp"
+#include "interpreter/interpreterRuntime.hpp"
+#include "interpreter/interp_masm.hpp"
+#include "interpreter/templateTable.hpp"
+#include "oops/arrayOop.hpp"
+#include "oops/methodData.hpp"
+#include "oops/method.hpp"
+#include "oops/oop.inline.hpp"
+#include "prims/jvmtiExport.hpp"
+#include "prims/jvmtiThreadState.hpp"
+#include "runtime/arguments.hpp"
+#include "runtime/deoptimization.hpp"
+#include "runtime/frame.inline.hpp"
+#include "runtime/sharedRuntime.hpp"
+#include "runtime/stubRoutines.hpp"
+#include "runtime/synchronizer.hpp"
+#include "runtime/timer.hpp"
+#include "runtime/vframeArray.hpp"
+#include "utilities/debug.hpp"
+#include "utilities/macros.hpp"
+
+#undef __
+#define __ _masm->
+
+#ifdef PRODUCT
+#define BLOCK_COMMENT(str) /* nothing */
+#else
+#define BLOCK_COMMENT(str) __ block_comment(str)
+#endif
+
+#define BIND(label) __ bind(label); BLOCK_COMMENT(#label ":")
+
+//-----------------------------------------------------------------------------
+
+// Actually we should never reach here since we do stack overflow checks before pushing any frame.
+address TemplateInterpreterGenerator::generate_StackOverflowError_handler() {
+ address entry = __ pc();
+ __ unimplemented("generate_StackOverflowError_handler");
+ return entry;
+}
+
+address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler(const char* name) {
+ address entry = __ pc();
+ __ empty_expression_stack();
+ __ load_const_optimized(R4_ARG2, (address) name);
+ // Index is in R17_tos.
+ __ mr(R5_ARG3, R17_tos);
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException));
+ return entry;
+}
+
+#if 0
+// Call special ClassCastException constructor taking object to cast
+// and target class as arguments.
+address TemplateInterpreterGenerator::generate_ClassCastException_verbose_handler() {
+ address entry = __ pc();
+
+ // Expression stack must be empty before entering the VM if an
+ // exception happened.
+ __ empty_expression_stack();
+
+ // Thread will be loaded to R3_ARG1.
+ // Target class oop is in register R5_ARG3 by convention!
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_ClassCastException_verbose), R17_tos, R5_ARG3);
+ // Above call must not return here since exception pending.
+ DEBUG_ONLY(__ should_not_reach_here();)
+ return entry;
+}
+#endif
+
+address TemplateInterpreterGenerator::generate_ClassCastException_handler() {
+ address entry = __ pc();
+ // Expression stack must be empty before entering the VM if an
+ // exception happened.
+ __ empty_expression_stack();
+
+ // Load exception object.
+ // Thread will be loaded to R3_ARG1.
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_ClassCastException), R17_tos);
+#ifdef ASSERT
+ // Above call must not return here since exception pending.
+ __ should_not_reach_here();
+#endif
+ return entry;
+}
+
+address TemplateInterpreterGenerator::generate_exception_handler_common(const char* name, const char* message, bool pass_oop) {
+ address entry = __ pc();
+ //__ untested("generate_exception_handler_common");
+ Register Rexception = R17_tos;
+
+ // Expression stack must be empty before entering the VM if an exception happened.
+ __ empty_expression_stack();
+
+ __ load_const_optimized(R4_ARG2, (address) name, R11_scratch1);
+ if (pass_oop) {
+ __ mr(R5_ARG3, Rexception);
+ __ call_VM(Rexception, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_klass_exception), false);
+ } else {
+ __ load_const_optimized(R5_ARG3, (address) message, R11_scratch1);
+ __ call_VM(Rexception, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), false);
+ }
+
+ // Throw exception.
+ __ mr(R3_ARG1, Rexception);
+ __ load_const_optimized(R11_scratch1, Interpreter::throw_exception_entry(), R12_scratch2);
+ __ mtctr(R11_scratch1);
+ __ bctr();
+
+ return entry;
+}
+
+address TemplateInterpreterGenerator::generate_continuation_for(TosState state) {
+ address entry = __ pc();
+ __ unimplemented("generate_continuation_for");
+ return entry;
+}
+
+// This entry is returned to when a call returns to the interpreter.
+// When we arrive here, we expect that the callee stack frame is already popped.
+address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step, size_t index_size) {
+ address entry = __ pc();
+
+ // Move the value out of the return register back to the TOS cache of current frame.
+ switch (state) {
+ case ltos:
+ case btos:
+ case ctos:
+ case stos:
+ case atos:
+ case itos: __ mr(R17_tos, R3_RET); break; // RET -> TOS cache
+ case ftos:
+ case dtos: __ fmr(F15_ftos, F1_RET); break; // TOS cache -> GR_FRET
+ case vtos: break; // Nothing to do, this was a void return.
+ default : ShouldNotReachHere();
+ }
+
+ __ restore_interpreter_state(R11_scratch1); // Sets R11_scratch1 = fp.
+ __ ld(R12_scratch2, _ijava_state_neg(top_frame_sp), R11_scratch1);
+ __ resize_frame_absolute(R12_scratch2, R11_scratch1, R0);
+
+ // Compiled code destroys templateTableBase, reload.
+ __ load_const_optimized(R25_templateTableBase, (address)Interpreter::dispatch_table((TosState)0), R12_scratch2);
+
+ if (state == atos) {
+ __ profile_return_type(R3_RET, R11_scratch1, R12_scratch2);
+ }
+
+ const Register cache = R11_scratch1;
+ const Register size = R12_scratch2;
+ __ get_cache_and_index_at_bcp(cache, 1, index_size);
+
+ // Get least significant byte of 64 bit value:
+#if defined(VM_LITTLE_ENDIAN)
+ __ lbz(size, in_bytes(ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::flags_offset()), cache);
+#else
+ __ lbz(size, in_bytes(ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::flags_offset()) + 7, cache);
+#endif
+ __ sldi(size, size, Interpreter::logStackElementSize);
+ __ add(R15_esp, R15_esp, size);
+ __ dispatch_next(state, step);
+ return entry;
+}
+
+address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, int step) {
+ address entry = __ pc();
+ // If state != vtos, we're returning from a native method, which put it's result
+ // into the result register. So move the value out of the return register back
+ // to the TOS cache of current frame.
+
+ switch (state) {
+ case ltos:
+ case btos:
+ case ctos:
+ case stos:
+ case atos:
+ case itos: __ mr(R17_tos, R3_RET); break; // GR_RET -> TOS cache
+ case ftos:
+ case dtos: __ fmr(F15_ftos, F1_RET); break; // TOS cache -> GR_FRET
+ case vtos: break; // Nothing to do, this was a void return.
+ default : ShouldNotReachHere();
+ }
+
+ // Load LcpoolCache @@@ should be already set!
+ __ get_constant_pool_cache(R27_constPoolCache);
+
+ // Handle a pending exception, fall through if none.
+ __ check_and_forward_exception(R11_scratch1, R12_scratch2);
+
+ // Start executing bytecodes.
+ __ dispatch_next(state, step);
+
+ return entry;
+}
+
+// A result handler converts the native result into java format.
+// Use the shared code between c++ and template interpreter.
+address TemplateInterpreterGenerator::generate_result_handler_for(BasicType type) {
+ return AbstractInterpreterGenerator::generate_result_handler_for(type);
+}
+
+address TemplateInterpreterGenerator::generate_safept_entry_for(TosState state, address runtime_entry) {
+ address entry = __ pc();
+
+ __ push(state);
+ __ call_VM(noreg, runtime_entry);
+ __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos));
+
+ return entry;
+}
+
+// Helpers for commoning out cases in the various type of method entries.
+
+// Increment invocation count & check for overflow.
+//
+// Note: checking for negative value instead of overflow
+// so we have a 'sticky' overflow test.
+//
+void TemplateInterpreterGenerator::generate_counter_incr(Label* overflow, Label* profile_method, Label* profile_method_continue) {
+ // Note: In tiered we increment either counters in method or in MDO depending if we're profiling or not.
+ Register Rscratch1 = R11_scratch1;
+ Register Rscratch2 = R12_scratch2;
+ Register R3_counters = R3_ARG1;
+ Label done;
+
+ if (TieredCompilation) {
+ const int increment = InvocationCounter::count_increment;
+ const int mask = ((1 << Tier0InvokeNotifyFreqLog) - 1) << InvocationCounter::count_shift;
+ Label no_mdo;
+ if (ProfileInterpreter) {
+ const Register Rmdo = Rscratch1;
+ // If no method data exists, go to profile_continue.
+ __ ld(Rmdo, in_bytes(Method::method_data_offset()), R19_method);
+ __ cmpdi(CCR0, Rmdo, 0);
+ __ beq(CCR0, no_mdo);
+
+ // Increment backedge counter in the MDO.
+ const int mdo_bc_offs = in_bytes(MethodData::backedge_counter_offset()) + in_bytes(InvocationCounter::counter_offset());
+ __ lwz(Rscratch2, mdo_bc_offs, Rmdo);
+ __ addi(Rscratch2, Rscratch2, increment);
+ __ stw(Rscratch2, mdo_bc_offs, Rmdo);
+ __ load_const_optimized(Rscratch1, mask, R0);
+ __ and_(Rscratch1, Rscratch2, Rscratch1);
+ __ bne(CCR0, done);
+ __ b(*overflow);
+ }
+
+ // Increment counter in MethodCounters*.
+ const int mo_bc_offs = in_bytes(MethodCounters::backedge_counter_offset()) + in_bytes(InvocationCounter::counter_offset());
+ __ bind(no_mdo);
+ __ get_method_counters(R19_method, R3_counters, done);
+ __ lwz(Rscratch2, mo_bc_offs, R3_counters);
+ __ addi(Rscratch2, Rscratch2, increment);
+ __ stw(Rscratch2, mo_bc_offs, R3_counters);
+ __ load_const_optimized(Rscratch1, mask, R0);
+ __ and_(Rscratch1, Rscratch2, Rscratch1);
+ __ beq(CCR0, *overflow);
+
+ __ bind(done);
+
+ } else {
+
+ // Update standard invocation counters.
+ Register Rsum_ivc_bec = R4_ARG2;
+ __ get_method_counters(R19_method, R3_counters, done);
+ __ increment_invocation_counter(R3_counters, Rsum_ivc_bec, R12_scratch2);
+ // Increment interpreter invocation counter.
+ if (ProfileInterpreter) { // %%% Merge this into methodDataOop.
+ __ lwz(R12_scratch2, in_bytes(MethodCounters::interpreter_invocation_counter_offset()), R3_counters);
+ __ addi(R12_scratch2, R12_scratch2, 1);
+ __ stw(R12_scratch2, in_bytes(MethodCounters::interpreter_invocation_counter_offset()), R3_counters);
+ }
+ // Check if we must create a method data obj.
+ if (ProfileInterpreter && profile_method != NULL) {
+ const Register profile_limit = Rscratch1;
+ int pl_offs = __ load_const_optimized(profile_limit, &InvocationCounter::InterpreterProfileLimit, R0, true);
+ __ lwz(profile_limit, pl_offs, profile_limit);
+ // Test to see if we should create a method data oop.
+ __ cmpw(CCR0, Rsum_ivc_bec, profile_limit);
+ __ blt(CCR0, *profile_method_continue);
+ // If no method data exists, go to profile_method.
+ __ test_method_data_pointer(*profile_method);
+ }
+ // Finally check for counter overflow.
+ if (overflow) {
+ const Register invocation_limit = Rscratch1;
+ int il_offs = __ load_const_optimized(invocation_limit, &InvocationCounter::InterpreterInvocationLimit, R0, true);
+ __ lwz(invocation_limit, il_offs, invocation_limit);
+ assert(4 == sizeof(InvocationCounter::InterpreterInvocationLimit), "unexpected field size");
+ __ cmpw(CCR0, Rsum_ivc_bec, invocation_limit);
+ __ bge(CCR0, *overflow);
+ }
+
+ __ bind(done);
+ }
+}
+
+// Generate code to initiate compilation on invocation counter overflow.
+void TemplateInterpreterGenerator::generate_counter_overflow(Label& continue_entry) {
+ // Generate code to initiate compilation on the counter overflow.
+
+ // InterpreterRuntime::frequency_counter_overflow takes one arguments,
+ // which indicates if the counter overflow occurs at a backwards branch (NULL bcp)
+ // We pass zero in.
+ // The call returns the address of the verified entry point for the method or NULL
+ // if the compilation did not complete (either went background or bailed out).
+ //
+ // Unlike the C++ interpreter above: Check exceptions!
+ // Assumption: Caller must set the flag "do_not_unlock_if_sychronized" if the monitor of a sync'ed
+ // method has not yet been created. Thus, no unlocking of a non-existing monitor can occur.
+
+ __ li(R4_ARG2, 0);
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), R4_ARG2, true);
+
+ // Returns verified_entry_point or NULL.
+ // We ignore it in any case.
+ __ b(continue_entry);
+}
+
+void TemplateInterpreterGenerator::generate_stack_overflow_check(Register Rmem_frame_size, Register Rscratch1) {
+ assert_different_registers(Rmem_frame_size, Rscratch1);
+ __ generate_stack_overflow_check_with_compare_and_throw(Rmem_frame_size, Rscratch1);
+}
+
+void TemplateInterpreterGenerator::unlock_method(bool check_exceptions) {
+ __ unlock_object(R26_monitor, check_exceptions);
+}
+
+// Lock the current method, interpreter register window must be set up!
+void TemplateInterpreterGenerator::lock_method(Register Rflags, Register Rscratch1, Register Rscratch2, bool flags_preloaded) {
+ const Register Robj_to_lock = Rscratch2;
+
+ {
+ if (!flags_preloaded) {
+ __ lwz(Rflags, method_(access_flags));
+ }
+
+#ifdef ASSERT
+ // Check if methods needs synchronization.
+ {
+ Label Lok;
+ __ testbitdi(CCR0, R0, Rflags, JVM_ACC_SYNCHRONIZED_BIT);
+ __ btrue(CCR0,Lok);
+ __ stop("method doesn't need synchronization");
+ __ bind(Lok);
+ }
+#endif // ASSERT
+ }
+
+ // Get synchronization object to Rscratch2.
+ {
+ const int mirror_offset = in_bytes(Klass::java_mirror_offset());
+ Label Lstatic;
+ Label Ldone;
+
+ __ testbitdi(CCR0, R0, Rflags, JVM_ACC_STATIC_BIT);
+ __ btrue(CCR0, Lstatic);
+
+ // Non-static case: load receiver obj from stack and we're done.
+ __ ld(Robj_to_lock, R18_locals);
+ __ b(Ldone);
+
+ __ bind(Lstatic); // Static case: Lock the java mirror
+ __ ld(Robj_to_lock, in_bytes(Method::const_offset()), R19_method);
+ __ ld(Robj_to_lock, in_bytes(ConstMethod::constants_offset()), Robj_to_lock);
+ __ ld(Robj_to_lock, ConstantPool::pool_holder_offset_in_bytes(), Robj_to_lock);
+ __ ld(Robj_to_lock, mirror_offset, Robj_to_lock);
+
+ __ bind(Ldone);
+ __ verify_oop(Robj_to_lock);
+ }
+
+ // Got the oop to lock => execute!
+ __ add_monitor_to_stack(true, Rscratch1, R0);
+
+ __ std(Robj_to_lock, BasicObjectLock::obj_offset_in_bytes(), R26_monitor);
+ __ lock_object(R26_monitor, Robj_to_lock);
+}
+
+// Generate a fixed interpreter frame for pure interpreter
+// and I2N native transition frames.
+//
+// Before (stack grows downwards):
+//
+// | ... |
+// |------------- |
+// | java arg0 |
+// | ... |
+// | java argn |
+// | | <- R15_esp
+// | |
+// |--------------|
+// | abi_112 |
+// | | <- R1_SP
+// |==============|
+//
+//
+// After:
+//
+// | ... |
+// | java arg0 |<- R18_locals
+// | ... |
+// | java argn |
+// |--------------|
+// | |
+// | java locals |
+// | |
+// |--------------|
+// | abi_48 |
+// |==============|
+// | |
+// | istate |
+// | |
+// |--------------|
+// | monitor |<- R26_monitor
+// |--------------|
+// | |<- R15_esp
+// | expression |
+// | stack |
+// | |
+// |--------------|
+// | |
+// | abi_112 |<- R1_SP
+// |==============|
+//
+// The top most frame needs an abi space of 112 bytes. This space is needed,
+// since we call to c. The c function may spill their arguments to the caller
+// frame. When we call to java, we don't need these spill slots. In order to save
+// space on the stack, we resize the caller. However, java local reside in
+// the caller frame and the frame has to be increased. The frame_size for the
+// current frame was calculated based on max_stack as size for the expression
+// stack. At the call, just a part of the expression stack might be used.
+// We don't want to waste this space and cut the frame back accordingly.
+// The resulting amount for resizing is calculated as follows:
+// resize = (number_of_locals - number_of_arguments) * slot_size
+// + (R1_SP - R15_esp) + 48
+//
+// The size for the callee frame is calculated:
+// framesize = 112 + max_stack + monitor + state_size
+//
+// maxstack: Max number of slots on the expression stack, loaded from the method.
+// monitor: We statically reserve room for one monitor object.
+// state_size: We save the current state of the interpreter to this area.
+//
+void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call, Register Rsize_of_parameters, Register Rsize_of_locals) {
+ Register parent_frame_resize = R6_ARG4, // Frame will grow by this number of bytes.
+ top_frame_size = R7_ARG5,
+ Rconst_method = R8_ARG6;
+
+ assert_different_registers(Rsize_of_parameters, Rsize_of_locals, parent_frame_resize, top_frame_size);
+
+ __ ld(Rconst_method, method_(const));
+ __ lhz(Rsize_of_parameters /* number of params */,
+ in_bytes(ConstMethod::size_of_parameters_offset()), Rconst_method);
+ if (native_call) {
+ // If we're calling a native method, we reserve space for the worst-case signature
+ // handler varargs vector, which is max(Argument::n_register_parameters, parameter_count+2).
+ // We add two slots to the parameter_count, one for the jni
+ // environment and one for a possible native mirror.
+ Label skip_native_calculate_max_stack;
+ __ addi(top_frame_size, Rsize_of_parameters, 2);
+ __ cmpwi(CCR0, top_frame_size, Argument::n_register_parameters);
+ __ bge(CCR0, skip_native_calculate_max_stack);
+ __ li(top_frame_size, Argument::n_register_parameters);
+ __ bind(skip_native_calculate_max_stack);
+ __ sldi(Rsize_of_parameters, Rsize_of_parameters, Interpreter::logStackElementSize);
+ __ sldi(top_frame_size, top_frame_size, Interpreter::logStackElementSize);
+ __ sub(parent_frame_resize, R1_SP, R15_esp); // <0, off by Interpreter::stackElementSize!
+ assert(Rsize_of_locals == noreg, "Rsize_of_locals not initialized"); // Only relevant value is Rsize_of_parameters.
+ } else {
+ __ lhz(Rsize_of_locals /* number of params */, in_bytes(ConstMethod::size_of_locals_offset()), Rconst_method);
+ __ sldi(Rsize_of_parameters, Rsize_of_parameters, Interpreter::logStackElementSize);
+ __ sldi(Rsize_of_locals, Rsize_of_locals, Interpreter::logStackElementSize);
+ __ lhz(top_frame_size, in_bytes(ConstMethod::max_stack_offset()), Rconst_method);
+ __ sub(R11_scratch1, Rsize_of_locals, Rsize_of_parameters); // >=0
+ __ sub(parent_frame_resize, R1_SP, R15_esp); // <0, off by Interpreter::stackElementSize!
+ __ sldi(top_frame_size, top_frame_size, Interpreter::logStackElementSize);
+ __ add(parent_frame_resize, parent_frame_resize, R11_scratch1);
+ }
+
+ // Compute top frame size.
+ __ addi(top_frame_size, top_frame_size, frame::abi_reg_args_size + frame::ijava_state_size);
+
+ // Cut back area between esp and max_stack.
+ __ addi(parent_frame_resize, parent_frame_resize, frame::abi_minframe_size - Interpreter::stackElementSize);
+
+ __ round_to(top_frame_size, frame::alignment_in_bytes);
+ __ round_to(parent_frame_resize, frame::alignment_in_bytes);
+ // parent_frame_resize = (locals-parameters) - (ESP-SP-ABI48) Rounded to frame alignment size.
+ // Enlarge by locals-parameters (not in case of native_call), shrink by ESP-SP-ABI48.
+
+ {
+ // --------------------------------------------------------------------------
+ // Stack overflow check
+
+ Label cont;
+ __ add(R11_scratch1, parent_frame_resize, top_frame_size);
+ generate_stack_overflow_check(R11_scratch1, R12_scratch2);
+ }
+
+ // Set up interpreter state registers.
+
+ __ add(R18_locals, R15_esp, Rsize_of_parameters);
+ __ ld(R27_constPoolCache, in_bytes(ConstMethod::constants_offset()), Rconst_method);
+ __ ld(R27_constPoolCache, ConstantPool::cache_offset_in_bytes(), R27_constPoolCache);
+
+ // Set method data pointer.
+ if (ProfileInterpreter) {
+ Label zero_continue;
+ __ ld(R28_mdx, method_(method_data));
+ __ cmpdi(CCR0, R28_mdx, 0);
+ __ beq(CCR0, zero_continue);
+ __ addi(R28_mdx, R28_mdx, in_bytes(MethodData::data_offset()));
+ __ bind(zero_continue);
+ }
+
+ if (native_call) {
+ __ li(R14_bcp, 0); // Must initialize.
+ } else {
+ __ add(R14_bcp, in_bytes(ConstMethod::codes_offset()), Rconst_method);
+ }
+
+ // Resize parent frame.
+ __ mflr(R12_scratch2);
+ __ neg(parent_frame_resize, parent_frame_resize);
+ __ resize_frame(parent_frame_resize, R11_scratch1);
+ __ std(R12_scratch2, _abi(lr), R1_SP);
+
+ __ addi(R26_monitor, R1_SP, - frame::ijava_state_size);
+ __ addi(R15_esp, R26_monitor, - Interpreter::stackElementSize);
+
+ // Store values.
+ // R15_esp, R14_bcp, R26_monitor, R28_mdx are saved at java calls
+ // in InterpreterMacroAssembler::call_from_interpreter.
+ __ std(R19_method, _ijava_state_neg(method), R1_SP);
+ __ std(R21_sender_SP, _ijava_state_neg(sender_sp), R1_SP);
+ __ std(R27_constPoolCache, _ijava_state_neg(cpoolCache), R1_SP);
+ __ std(R18_locals, _ijava_state_neg(locals), R1_SP);
+
+ // Note: esp, bcp, monitor, mdx live in registers. Hence, the correct version can only
+ // be found in the frame after save_interpreter_state is done. This is always true
+ // for non-top frames. But when a signal occurs, dumping the top frame can go wrong,
+ // because e.g. frame::interpreter_frame_bcp() will not access the correct value
+ // (Enhanced Stack Trace).
+ // The signal handler does not save the interpreter state into the frame.
+ __ li(R0, 0);
+#ifdef ASSERT
+ // Fill remaining slots with constants.
+ __ load_const_optimized(R11_scratch1, 0x5afe);
+ __ load_const_optimized(R12_scratch2, 0xdead);
+#endif
+ // We have to initialize some frame slots for native calls (accessed by GC).
+ if (native_call) {
+ __ std(R26_monitor, _ijava_state_neg(monitors), R1_SP);
+ __ std(R14_bcp, _ijava_state_neg(bcp), R1_SP);
+ if (ProfileInterpreter) { __ std(R28_mdx, _ijava_state_neg(mdx), R1_SP); }
+ }
+#ifdef ASSERT
+ else {
+ __ std(R12_scratch2, _ijava_state_neg(monitors), R1_SP);
+ __ std(R12_scratch2, _ijava_state_neg(bcp), R1_SP);
+ __ std(R12_scratch2, _ijava_state_neg(mdx), R1_SP);
+ }
+ __ std(R11_scratch1, _ijava_state_neg(ijava_reserved), R1_SP);
+ __ std(R12_scratch2, _ijava_state_neg(esp), R1_SP);
+ __ std(R12_scratch2, _ijava_state_neg(lresult), R1_SP);
+ __ std(R12_scratch2, _ijava_state_neg(fresult), R1_SP);
+#endif
+ __ subf(R12_scratch2, top_frame_size, R1_SP);
+ __ std(R0, _ijava_state_neg(oop_tmp), R1_SP);
+ __ std(R12_scratch2, _ijava_state_neg(top_frame_sp), R1_SP);
+
+ // Push top frame.
+ __ push_frame(top_frame_size, R11_scratch1);
+}
+
+// End of helpers
+
+address TemplateInterpreterGenerator::generate_math_entry(AbstractInterpreter::MethodKind kind) {
+ if (!TemplateInterpreter::math_entry_available(kind)) {
+ NOT_PRODUCT(__ should_not_reach_here();)
+ return NULL;
+ }
+
+ address entry = __ pc();
+
+ __ lfd(F1_RET, Interpreter::stackElementSize, R15_esp);
+
+ // Pop c2i arguments (if any) off when we return.
+#ifdef ASSERT
+ __ ld(R9_ARG7, 0, R1_SP);
+ __ ld(R10_ARG8, 0, R21_sender_SP);
+ __ cmpd(CCR0, R9_ARG7, R10_ARG8);
+ __ asm_assert_eq("backlink", 0x545);
+#endif // ASSERT
+ __ mr(R1_SP, R21_sender_SP); // Cut the stack back to where the caller started.
+
+ if (kind == Interpreter::java_lang_math_sqrt) {
+ __ fsqrt(F1_RET, F1_RET);
+ } else if (kind == Interpreter::java_lang_math_abs) {
+ __ fabs(F1_RET, F1_RET);
+ } else {
+ ShouldNotReachHere();
+ }
+
+ // And we're done.
+ __ blr();
+
+ __ flush();
+
+ return entry;
+}
+
+// Interpreter stub for calling a native method. (asm interpreter)
+// This sets up a somewhat different looking stack for calling the
+// native method than the typical interpreter frame setup.
+//
+// On entry:
+// R19_method - method
+// R16_thread - JavaThread*
+// R15_esp - intptr_t* sender tos
+//
+// abstract stack (grows up)
+// [ IJava (caller of JNI callee) ] <-- ASP
+// ...
+address TemplateInterpreterGenerator::generate_native_entry(bool synchronized) {
+
+ address entry = __ pc();
+
+ const bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods;
+
+ // -----------------------------------------------------------------------------
+ // Allocate a new frame that represents the native callee (i2n frame).
+ // This is not a full-blown interpreter frame, but in particular, the
+ // following registers are valid after this:
+ // - R19_method
+ // - R18_local (points to start of argumuments to native function)
+ //
+ // abstract stack (grows up)
+ // [ IJava (caller of JNI callee) ] <-- ASP
+ // ...
+
+ const Register signature_handler_fd = R11_scratch1;
+ const Register pending_exception = R0;
+ const Register result_handler_addr = R31;
+ const Register native_method_fd = R11_scratch1;
+ const Register access_flags = R22_tmp2;
+ const Register active_handles = R11_scratch1; // R26_monitor saved to state.
+ const Register sync_state = R12_scratch2;
+ const Register sync_state_addr = sync_state; // Address is dead after use.
+ const Register suspend_flags = R11_scratch1;
+
+ //=============================================================================
+ // Allocate new frame and initialize interpreter state.
+
+ Label exception_return;
+ Label exception_return_sync_check;
+ Label stack_overflow_return;
+
+ // Generate new interpreter state and jump to stack_overflow_return in case of
+ // a stack overflow.
+ //generate_compute_interpreter_state(stack_overflow_return);
+
+ Register size_of_parameters = R22_tmp2;
+
+ generate_fixed_frame(true, size_of_parameters, noreg /* unused */);
+
+ //=============================================================================
+ // Increment invocation counter. On overflow, entry to JNI method
+ // will be compiled.
+ Label invocation_counter_overflow, continue_after_compile;
+ if (inc_counter) {
+ if (synchronized) {
+ // Since at this point in the method invocation the exception handler
+ // would try to exit the monitor of synchronized methods which hasn't
+ // been entered yet, we set the thread local variable
+ // _do_not_unlock_if_synchronized to true. If any exception was thrown by
+ // runtime, exception handling i.e. unlock_if_synchronized_method will
+ // check this thread local flag.
+ // This flag has two effects, one is to force an unwind in the topmost
+ // interpreter frame and not perform an unlock while doing so.
+ __ li(R0, 1);
+ __ stb(R0, in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()), R16_thread);
+ }
+ generate_counter_incr(&invocation_counter_overflow, NULL, NULL);
+
+ BIND(continue_after_compile);
+ // Reset the _do_not_unlock_if_synchronized flag.
+ if (synchronized) {
+ __ li(R0, 0);
+ __ stb(R0, in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()), R16_thread);
+ }
+ }
+
+ // access_flags = method->access_flags();
+ // Load access flags.
+ assert(access_flags->is_nonvolatile(),
+ "access_flags must be in a non-volatile register");
+ // Type check.
+ assert(4 == sizeof(AccessFlags), "unexpected field size");
+ __ lwz(access_flags, method_(access_flags));
+
+ // We don't want to reload R19_method and access_flags after calls
+ // to some helper functions.
+ assert(R19_method->is_nonvolatile(),
+ "R19_method must be a non-volatile register");
+
+ // Check for synchronized methods. Must happen AFTER invocation counter
+ // check, so method is not locked if counter overflows.
+
+ if (synchronized) {
+ lock_method(access_flags, R11_scratch1, R12_scratch2, true);
+
+ // Update monitor in state.
+ __ ld(R11_scratch1, 0, R1_SP);
+ __ std(R26_monitor, _ijava_state_neg(monitors), R11_scratch1);
+ }
+
+ // jvmti/jvmpi support
+ __ notify_method_entry();
+
+ //=============================================================================
+ // Get and call the signature handler.
+
+ __ ld(signature_handler_fd, method_(signature_handler));
+ Label call_signature_handler;
+
+ __ cmpdi(CCR0, signature_handler_fd, 0);
+ __ bne(CCR0, call_signature_handler);
+
+ // Method has never been called. Either generate a specialized
+ // handler or point to the slow one.
+ //
+ // Pass parameter 'false' to avoid exception check in call_VM.
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), R19_method, false);
+
+ // Check for an exception while looking up the target method. If we
+ // incurred one, bail.
+ __ ld(pending_exception, thread_(pending_exception));
+ __ cmpdi(CCR0, pending_exception, 0);
+ __ bne(CCR0, exception_return_sync_check); // Has pending exception.
+
+ // Reload signature handler, it may have been created/assigned in the meanwhile.
+ __ ld(signature_handler_fd, method_(signature_handler));
+ __ twi_0(signature_handler_fd); // Order wrt. load of klass mirror and entry point (isync is below).
+
+ BIND(call_signature_handler);
+
+ // Before we call the signature handler we push a new frame to
+ // protect the interpreter frame volatile registers when we return
+ // from jni but before we can get back to Java.
+
+ // First set the frame anchor while the SP/FP registers are
+ // convenient and the slow signature handler can use this same frame
+ // anchor.
+
+ // We have a TOP_IJAVA_FRAME here, which belongs to us.
+ __ set_top_ijava_frame_at_SP_as_last_Java_frame(R1_SP, R12_scratch2/*tmp*/);
+
+ // Now the interpreter frame (and its call chain) have been
+ // invalidated and flushed. We are now protected against eager
+ // being enabled in native code. Even if it goes eager the
+ // registers will be reloaded as clean and we will invalidate after
+ // the call so no spurious flush should be possible.
+
+ // Call signature handler and pass locals address.
+ //
+ // Our signature handlers copy required arguments to the C stack
+ // (outgoing C args), R3_ARG1 to R10_ARG8, and FARG1 to FARG13.
+ __ mr(R3_ARG1, R18_locals);
+#if !defined(ABI_ELFv2)
+ __ ld(signature_handler_fd, 0, signature_handler_fd);
+#endif
+
+ __ call_stub(signature_handler_fd);
+
+ // Remove the register parameter varargs slots we allocated in
+ // compute_interpreter_state. SP+16 ends up pointing to the ABI
+ // outgoing argument area.
+ //
+ // Not needed on PPC64.
+ //__ add(SP, SP, Argument::n_register_parameters*BytesPerWord);
+
+ assert(result_handler_addr->is_nonvolatile(), "result_handler_addr must be in a non-volatile register");
+ // Save across call to native method.
+ __ mr(result_handler_addr, R3_RET);
+
+ __ isync(); // Acquire signature handler before trying to fetch the native entry point and klass mirror.
+
+ // Set up fixed parameters and call the native method.
+ // If the method is static, get mirror into R4_ARG2.
+ {
+ Label method_is_not_static;
+ // Access_flags is non-volatile and still, no need to restore it.
+
+ // Restore access flags.
+ __ testbitdi(CCR0, R0, access_flags, JVM_ACC_STATIC_BIT);
+ __ bfalse(CCR0, method_is_not_static);
+
+ // constants = method->constants();
+ __ ld(R11_scratch1, in_bytes(Method::const_offset()), R19_method);
+ __ ld(R11_scratch1, in_bytes(ConstMethod::constants_offset()), R11_scratch1);
+ // pool_holder = method->constants()->pool_holder();
+ __ ld(R11_scratch1/*pool_holder*/, ConstantPool::pool_holder_offset_in_bytes(),
+ R11_scratch1/*constants*/);
+
+ const int mirror_offset = in_bytes(Klass::java_mirror_offset());
+
+ // mirror = pool_holder->klass_part()->java_mirror();
+ __ ld(R0/*mirror*/, mirror_offset, R11_scratch1/*pool_holder*/);
+ // state->_native_mirror = mirror;
+
+ __ ld(R11_scratch1, 0, R1_SP);
+ __ std(R0/*mirror*/, _ijava_state_neg(oop_tmp), R11_scratch1);
+ // R4_ARG2 = &state->_oop_temp;
+ __ addi(R4_ARG2, R11_scratch1, _ijava_state_neg(oop_tmp));
+ BIND(method_is_not_static);
+ }
+
+ // At this point, arguments have been copied off the stack into
+ // their JNI positions. Oops are boxed in-place on the stack, with
+ // handles copied to arguments. The result handler address is in a
+ // register.
+
+ // Pass JNIEnv address as first parameter.
+ __ addir(R3_ARG1, thread_(jni_environment));
+
+ // Load the native_method entry before we change the thread state.
+ __ ld(native_method_fd, method_(native_function));
+
+ //=============================================================================
+ // Transition from _thread_in_Java to _thread_in_native. As soon as
+ // we make this change the safepoint code needs to be certain that
+ // the last Java frame we established is good. The pc in that frame
+ // just needs to be near here not an actual return address.
+
+ // We use release_store_fence to update values like the thread state, where
+ // we don't want the current thread to continue until all our prior memory
+ // accesses (including the new thread state) are visible to other threads.
+ __ li(R0, _thread_in_native);
+ __ release();
+
+ // TODO PPC port assert(4 == JavaThread::sz_thread_state(), "unexpected field size");
+ __ stw(R0, thread_(thread_state));
+
+ if (UseMembar) {
+ __ fence();
+ }
+
+ //=============================================================================
+ // Call the native method. Argument registers must not have been
+ // overwritten since "__ call_stub(signature_handler);" (except for
+ // ARG1 and ARG2 for static methods).
+ __ call_c(native_method_fd);
+
+ __ li(R0, 0);
+ __ ld(R11_scratch1, 0, R1_SP);
+ __ std(R3_RET, _ijava_state_neg(lresult), R11_scratch1);
+ __ stfd(F1_RET, _ijava_state_neg(fresult), R11_scratch1);
+ __ std(R0/*mirror*/, _ijava_state_neg(oop_tmp), R11_scratch1); // reset
+
+ // Note: C++ interpreter needs the following here:
+ // The frame_manager_lr field, which we use for setting the last
+ // java frame, gets overwritten by the signature handler. Restore
+ // it now.
+ //__ get_PC_trash_LR(R11_scratch1);
+ //__ std(R11_scratch1, _top_ijava_frame_abi(frame_manager_lr), R1_SP);
+
+ // Because of GC R19_method may no longer be valid.
+
+ // Block, if necessary, before resuming in _thread_in_Java state.
+ // In order for GC to work, don't clear the last_Java_sp until after
+ // blocking.
+
+ //=============================================================================
+ // Switch thread to "native transition" state before reading the
+ // synchronization state. This additional state is necessary
+ // because reading and testing the synchronization state is not
+ // atomic w.r.t. GC, as this scenario demonstrates: Java thread A,
+ // in _thread_in_native state, loads _not_synchronized and is
+ // preempted. VM thread changes sync state to synchronizing and
+ // suspends threads for GC. Thread A is resumed to finish this
+ // native method, but doesn't block here since it didn't see any
+ // synchronization in progress, and escapes.
+
+ // We use release_store_fence to update values like the thread state, where
+ // we don't want the current thread to continue until all our prior memory
+ // accesses (including the new thread state) are visible to other threads.
+ __ li(R0/*thread_state*/, _thread_in_native_trans);
+ __ release();
+ __ stw(R0/*thread_state*/, thread_(thread_state));
+ if (UseMembar) {
+ __ fence();
+ }
+ // Write serialization page so that the VM thread can do a pseudo remote
+ // membar. We use the current thread pointer to calculate a thread
+ // specific offset to write to within the page. This minimizes bus
+ // traffic due to cache line collision.
+ else {
+ __ serialize_memory(R16_thread, R11_scratch1, R12_scratch2);
+ }
+
+ // Now before we return to java we must look for a current safepoint
+ // (a new safepoint can not start since we entered native_trans).
+ // We must check here because a current safepoint could be modifying
+ // the callers registers right this moment.
+
+ // Acquire isn't strictly necessary here because of the fence, but
+ // sync_state is declared to be volatile, so we do it anyway
+ // (cmp-br-isync on one path, release (same as acquire on PPC64) on the other path).
+ int sync_state_offs = __ load_const_optimized(sync_state_addr, SafepointSynchronize::address_of_state(), /*temp*/R0, true);
+
+ // TODO PPC port assert(4 == SafepointSynchronize::sz_state(), "unexpected field size");
+ __ lwz(sync_state, sync_state_offs, sync_state_addr);
+
+ // TODO PPC port assert(4 == Thread::sz_suspend_flags(), "unexpected field size");
+ __ lwz(suspend_flags, thread_(suspend_flags));
+
+ Label sync_check_done;
+ Label do_safepoint;
+ // No synchronization in progress nor yet synchronized.
+ __ cmpwi(CCR0, sync_state, SafepointSynchronize::_not_synchronized);
+ // Not suspended.
+ __ cmpwi(CCR1, suspend_flags, 0);
+
+ __ bne(CCR0, do_safepoint);
+ __ beq(CCR1, sync_check_done);
+ __ bind(do_safepoint);
+ __ isync();
+ // Block. We do the call directly and leave the current
+ // last_Java_frame setup undisturbed. We must save any possible
+ // native result across the call. No oop is present.
+
+ __ mr(R3_ARG1, R16_thread);
+#if defined(ABI_ELFv2)
+ __ call_c(CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans),
+ relocInfo::none);
+#else
+ __ call_c(CAST_FROM_FN_PTR(FunctionDescriptor*, JavaThread::check_special_condition_for_native_trans),
+ relocInfo::none);
+#endif
+
+ __ bind(sync_check_done);
+
+ //=============================================================================
+ // <<<<<< Back in Interpreter Frame >>>>>
+
+ // We are in thread_in_native_trans here and back in the normal
+ // interpreter frame. We don't have to do anything special about
+ // safepoints and we can switch to Java mode anytime we are ready.
+
+ // Note: frame::interpreter_frame_result has a dependency on how the
+ // method result is saved across the call to post_method_exit. For
+ // native methods it assumes that the non-FPU/non-void result is
+ // saved in _native_lresult and a FPU result in _native_fresult. If
+ // this changes then the interpreter_frame_result implementation
+ // will need to be updated too.
+
+ // On PPC64, we have stored the result directly after the native call.
+
+ //=============================================================================
+ // Back in Java
+
+ // We use release_store_fence to update values like the thread state, where
+ // we don't want the current thread to continue until all our prior memory
+ // accesses (including the new thread state) are visible to other threads.
+ __ li(R0/*thread_state*/, _thread_in_Java);
+ __ release();
+ __ stw(R0/*thread_state*/, thread_(thread_state));
+ if (UseMembar) {
+ __ fence();
+ }
+
+ __ reset_last_Java_frame();
+
+ // Jvmdi/jvmpi support. Whether we've got an exception pending or
+ // not, and whether unlocking throws an exception or not, we notify
+ // on native method exit. If we do have an exception, we'll end up
+ // in the caller's context to handle it, so if we don't do the
+ // notify here, we'll drop it on the floor.
+ __ notify_method_exit(true/*native method*/,
+ ilgl /*illegal state (not used for native methods)*/,
+ InterpreterMacroAssembler::NotifyJVMTI,
+ false /*check_exceptions*/);
+
+ //=============================================================================
+ // Handle exceptions
+
+ if (synchronized) {
+ // Don't check for exceptions since we're still in the i2n frame. Do that
+ // manually afterwards.
+ unlock_method(false);
+ }
+
+ // Reset active handles after returning from native.
+ // thread->active_handles()->clear();
+ __ ld(active_handles, thread_(active_handles));
+ // TODO PPC port assert(4 == JNIHandleBlock::top_size_in_bytes(), "unexpected field size");
+ __ li(R0, 0);
+ __ stw(R0, JNIHandleBlock::top_offset_in_bytes(), active_handles);
+
+ Label exception_return_sync_check_already_unlocked;
+ __ ld(R0/*pending_exception*/, thread_(pending_exception));
+ __ cmpdi(CCR0, R0/*pending_exception*/, 0);
+ __ bne(CCR0, exception_return_sync_check_already_unlocked);
+
+ //-----------------------------------------------------------------------------
+ // No exception pending.
+
+ // Move native method result back into proper registers and return.
+ // Invoke result handler (may unbox/promote).
+ __ ld(R11_scratch1, 0, R1_SP);
+ __ ld(R3_RET, _ijava_state_neg(lresult), R11_scratch1);
+ __ lfd(F1_RET, _ijava_state_neg(fresult), R11_scratch1);
+ __ call_stub(result_handler_addr);
+
+ __ merge_frames(/*top_frame_sp*/ R21_sender_SP, /*return_pc*/ R0, R11_scratch1, R12_scratch2);
+
+ // Must use the return pc which was loaded from the caller's frame
+ // as the VM uses return-pc-patching for deoptimization.
+ __ mtlr(R0);
+ __ blr();
+
+ //-----------------------------------------------------------------------------
+ // An exception is pending. We call into the runtime only if the
+ // caller was not interpreted. If it was interpreted the
+ // interpreter will do the correct thing. If it isn't interpreted
+ // (call stub/compiled code) we will change our return and continue.
+
+ BIND(exception_return_sync_check);
+
+ if (synchronized) {
+ // Don't check for exceptions since we're still in the i2n frame. Do that
+ // manually afterwards.
+ unlock_method(false);
+ }
+ BIND(exception_return_sync_check_already_unlocked);
+
+ const Register return_pc = R31;
+
+ __ ld(return_pc, 0, R1_SP);
+ __ ld(return_pc, _abi(lr), return_pc);
+
+ // Get the address of the exception handler.
+ __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address),
+ R16_thread,
+ return_pc /* return pc */);
+ __ merge_frames(/*top_frame_sp*/ R21_sender_SP, noreg, R11_scratch1, R12_scratch2);
+
+ // Load the PC of the the exception handler into LR.
+ __ mtlr(R3_RET);
+
+ // Load exception into R3_ARG1 and clear pending exception in thread.
+ __ ld(R3_ARG1/*exception*/, thread_(pending_exception));
+ __ li(R4_ARG2, 0);
+ __ std(R4_ARG2, thread_(pending_exception));
+
+ // Load the original return pc into R4_ARG2.
+ __ mr(R4_ARG2/*issuing_pc*/, return_pc);
+
+ // Return to exception handler.
+ __ blr();
+
+ //=============================================================================
+ // Counter overflow.
+
+ if (inc_counter) {
+ // Handle invocation counter overflow.
+ __ bind(invocation_counter_overflow);
+
+ generate_counter_overflow(continue_after_compile);
+ }
+
+ return entry;
+}
+
+// Generic interpreted method entry to (asm) interpreter.
+//
+address TemplateInterpreterGenerator::generate_normal_entry(bool synchronized) {
+ bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods;
+ address entry = __ pc();
+ // Generate the code to allocate the interpreter stack frame.
+ Register Rsize_of_parameters = R4_ARG2, // Written by generate_fixed_frame.
+ Rsize_of_locals = R5_ARG3; // Written by generate_fixed_frame.
+
+ generate_fixed_frame(false, Rsize_of_parameters, Rsize_of_locals);
+
+ // --------------------------------------------------------------------------
+ // Zero out non-parameter locals.
+ // Note: *Always* zero out non-parameter locals as Sparc does. It's not
+ // worth to ask the flag, just do it.
+ Register Rslot_addr = R6_ARG4,
+ Rnum = R7_ARG5;
+ Label Lno_locals, Lzero_loop;
+
+ // Set up the zeroing loop.
+ __ subf(Rnum, Rsize_of_parameters, Rsize_of_locals);
+ __ subf(Rslot_addr, Rsize_of_parameters, R18_locals);
+ __ srdi_(Rnum, Rnum, Interpreter::logStackElementSize);
+ __ beq(CCR0, Lno_locals);
+ __ li(R0, 0);
+ __ mtctr(Rnum);
+
+ // The zero locals loop.
+ __ bind(Lzero_loop);
+ __ std(R0, 0, Rslot_addr);
+ __ addi(Rslot_addr, Rslot_addr, -Interpreter::stackElementSize);
+ __ bdnz(Lzero_loop);
+
+ __ bind(Lno_locals);
+
+ // --------------------------------------------------------------------------
+ // Counter increment and overflow check.
+ Label invocation_counter_overflow,
+ profile_method,
+ profile_method_continue;
+ if (inc_counter || ProfileInterpreter) {
+
+ Register Rdo_not_unlock_if_synchronized_addr = R11_scratch1;
+ if (synchronized) {
+ // Since at this point in the method invocation the exception handler
+ // would try to exit the monitor of synchronized methods which hasn't
+ // been entered yet, we set the thread local variable
+ // _do_not_unlock_if_synchronized to true. If any exception was thrown by
+ // runtime, exception handling i.e. unlock_if_synchronized_method will
+ // check this thread local flag.
+ // This flag has two effects, one is to force an unwind in the topmost
+ // interpreter frame and not perform an unlock while doing so.
+ __ li(R0, 1);
+ __ stb(R0, in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()), R16_thread);
+ }
+
+ // Argument and return type profiling.
+ __ profile_parameters_type(R3_ARG1, R4_ARG2, R5_ARG3, R6_ARG4);
+
+ // Increment invocation counter and check for overflow.
+ if (inc_counter) {
+ generate_counter_incr(&invocation_counter_overflow, &profile_method, &profile_method_continue);
+ }
+
+ __ bind(profile_method_continue);
+
+ // Reset the _do_not_unlock_if_synchronized flag.
+ if (synchronized) {
+ __ li(R0, 0);
+ __ stb(R0, in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()), R16_thread);
+ }
+ }
+
+ // --------------------------------------------------------------------------
+ // Locking of synchronized methods. Must happen AFTER invocation_counter
+ // check and stack overflow check, so method is not locked if overflows.
+ if (synchronized) {
+ lock_method(R3_ARG1, R4_ARG2, R5_ARG3);
+ }
+#ifdef ASSERT
+ else {
+ Label Lok;
+ __ lwz(R0, in_bytes(Method::access_flags_offset()), R19_method);
+ __ andi_(R0, R0, JVM_ACC_SYNCHRONIZED);
+ __ asm_assert_eq("method needs synchronization", 0x8521);
+ __ bind(Lok);
+ }
+#endif // ASSERT
+
+ __ verify_thread();
+
+ // --------------------------------------------------------------------------
+ // JVMTI support
+ __ notify_method_entry();
+
+ // --------------------------------------------------------------------------
+ // Start executing instructions.
+ __ dispatch_next(vtos);
+
+ // --------------------------------------------------------------------------
+ // Out of line counter overflow and MDO creation code.
+ if (ProfileInterpreter) {
+ // We have decided to profile this method in the interpreter.
+ __ bind(profile_method);
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method));
+ __ set_method_data_pointer_for_bcp();
+ __ b(profile_method_continue);
+ }
+
+ if (inc_counter) {
+ // Handle invocation counter overflow.
+ __ bind(invocation_counter_overflow);
+ generate_counter_overflow(profile_method_continue);
+ }
+ return entry;
+}
+
+// CRC32 Intrinsics.
+//
+// Contract on scratch and work registers.
+// =======================================
+//
+// On ppc, the register set {R2..R12} is available in the interpreter as scratch/work registers.
+// You should, however, keep in mind that {R3_ARG1..R10_ARG8} is the C-ABI argument register set.
+// You can't rely on these registers across calls.
+//
+// The generators for CRC32_update and for CRC32_updateBytes use the
+// scratch/work register set internally, passing the work registers
+// as arguments to the MacroAssembler emitters as required.
+//
+// R3_ARG1..R6_ARG4 are preset to hold the incoming java arguments.
+// Their contents is not constant but may change according to the requirements
+// of the emitted code.
+//
+// All other registers from the scratch/work register set are used "internally"
+// and contain garbage (i.e. unpredictable values) once blr() is reached.
+// Basically, only R3_RET contains a defined value which is the function result.
+//
+/**
+ * Method entry for static native methods:
+ * int java.util.zip.CRC32.update(int crc, int b)
+ */
+address InterpreterGenerator::generate_CRC32_update_entry() {
+ if (UseCRC32Intrinsics) {
+ address start = __ pc(); // Remember stub start address (is rtn value).
+ Label slow_path;
+
+ // Safepoint check
+ const Register sync_state = R11_scratch1;
+ int sync_state_offs = __ load_const_optimized(sync_state, SafepointSynchronize::address_of_state(), /*temp*/R0, true);
+ __ lwz(sync_state, sync_state_offs, sync_state);
+ __ cmpwi(CCR0, sync_state, SafepointSynchronize::_not_synchronized);
+ __ bne(CCR0, slow_path);
+
+ // We don't generate local frame and don't align stack because
+ // we not even call stub code (we generate the code inline)
+ // and there is no safepoint on this path.
+
+ // Load java parameters.
+ // R15_esp is callers operand stack pointer, i.e. it points to the parameters.
+ const Register argP = R15_esp;
+ const Register crc = R3_ARG1; // crc value
+ const Register data = R4_ARG2; // address of java byte value (kernel_crc32 needs address)
+ const Register dataLen = R5_ARG3; // source data len (1 byte). Not used because calling the single-byte emitter.
+ const Register table = R6_ARG4; // address of crc32 table
+ const Register tmp = dataLen; // Reuse unused len register to show we don't actually need a separate tmp here.
+
+ BLOCK_COMMENT("CRC32_update {");
+
+ // Arguments are reversed on java expression stack
+#ifdef VM_LITTLE_ENDIAN
+ __ addi(data, argP, 0+1*wordSize); // (stack) address of byte value. Emitter expects address, not value.
+ // Being passed as an int, the single byte is at offset +0.
+#else
+ __ addi(data, argP, 3+1*wordSize); // (stack) address of byte value. Emitter expects address, not value.
+ // Being passed from java as an int, the single byte is at offset +3.
+#endif
+ __ lwz(crc, 2*wordSize, argP); // Current crc state, zero extend to 64 bit to have a clean register.
+
+ StubRoutines::ppc64::generate_load_crc_table_addr(_masm, table);
+ __ kernel_crc32_singleByte(crc, data, dataLen, table, tmp);
+
+ // Restore caller sp for c2i case and return.
+ __ mr(R1_SP, R21_sender_SP); // Cut the stack back to where the caller started.
+ __ blr();
+
+ // Generate a vanilla native entry as the slow path.
+ BLOCK_COMMENT("} CRC32_update");
+ BIND(slow_path);
+ __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::native), R11_scratch1);
+ return start;
+ }
+
+ return NULL;
+}
+
+// CRC32 Intrinsics.
+/**
+ * Method entry for static native methods:
+ * int java.util.zip.CRC32.updateBytes( int crc, byte[] b, int off, int len)
+ * int java.util.zip.CRC32.updateByteBuffer(int crc, long* buf, int off, int len)
+ */
+address InterpreterGenerator::generate_CRC32_updateBytes_entry(AbstractInterpreter::MethodKind kind) {
+ if (UseCRC32Intrinsics) {
+ address start = __ pc(); // Remember stub start address (is rtn value).
+ Label slow_path;
+
+ // Safepoint check
+ const Register sync_state = R11_scratch1;
+ int sync_state_offs = __ load_const_optimized(sync_state, SafepointSynchronize::address_of_state(), /*temp*/R0, true);
+ __ lwz(sync_state, sync_state_offs, sync_state);
+ __ cmpwi(CCR0, sync_state, SafepointSynchronize::_not_synchronized);
+ __ bne(CCR0, slow_path);
+
+ // We don't generate local frame and don't align stack because
+ // we not even call stub code (we generate the code inline)
+ // and there is no safepoint on this path.
+
+ // Load parameters.
+ // Z_esp is callers operand stack pointer, i.e. it points to the parameters.
+ const Register argP = R15_esp;
+ const Register crc = R3_ARG1; // crc value
+ const Register data = R4_ARG2; // address of java byte array
+ const Register dataLen = R5_ARG3; // source data len
+ const Register table = R6_ARG4; // address of crc32 table
+
+ const Register t0 = R9; // scratch registers for crc calculation
+ const Register t1 = R10;
+ const Register t2 = R11;
+ const Register t3 = R12;
+
+ const Register tc0 = R2; // registers to hold pre-calculated column addresses
+ const Register tc1 = R7;
+ const Register tc2 = R8;
+ const Register tc3 = table; // table address is reconstructed at the end of kernel_crc32_* emitters
+
+ const Register tmp = t0; // Only used very locally to calculate byte buffer address.
+
+ // Arguments are reversed on java expression stack.
+ // Calculate address of start element.
+ if (kind == Interpreter::java_util_zip_CRC32_updateByteBuffer) { // Used for "updateByteBuffer direct".
+ BLOCK_COMMENT("CRC32_updateByteBuffer {");
+ // crc @ (SP + 5W) (32bit)
+ // buf @ (SP + 3W) (64bit ptr to long array)
+ // off @ (SP + 2W) (32bit)
+ // dataLen @ (SP + 1W) (32bit)
+ // data = buf + off
+ __ ld( data, 3*wordSize, argP); // start of byte buffer
+ __ lwa( tmp, 2*wordSize, argP); // byte buffer offset
+ __ lwa( dataLen, 1*wordSize, argP); // #bytes to process
+ __ lwz( crc, 5*wordSize, argP); // current crc state
+ __ add( data, data, tmp); // Add byte buffer offset.
+ } else { // Used for "updateBytes update".
+ BLOCK_COMMENT("CRC32_updateBytes {");
+ // crc @ (SP + 4W) (32bit)
+ // buf @ (SP + 3W) (64bit ptr to byte array)
+ // off @ (SP + 2W) (32bit)
+ // dataLen @ (SP + 1W) (32bit)
+ // data = buf + off + base_offset
+ __ ld( data, 3*wordSize, argP); // start of byte buffer
+ __ lwa( tmp, 2*wordSize, argP); // byte buffer offset
+ __ lwa( dataLen, 1*wordSize, argP); // #bytes to process
+ __ add( data, data, tmp); // add byte buffer offset
+ __ lwz( crc, 4*wordSize, argP); // current crc state
+ __ addi(data, data, arrayOopDesc::base_offset_in_bytes(T_BYTE));
+ }
+
+ StubRoutines::ppc64::generate_load_crc_table_addr(_masm, table);
+
+ // Performance measurements show the 1word and 2word variants to be almost equivalent,
+ // with very light advantages for the 1word variant. We chose the 1word variant for
+ // code compactness.
+ __ kernel_crc32_1word(crc, data, dataLen, table, t0, t1, t2, t3, tc0, tc1, tc2, tc3);
+
+ // Restore caller sp for c2i case and return.
+ __ mr(R1_SP, R21_sender_SP); // Cut the stack back to where the caller started.
+ __ blr();
+
+ // Generate a vanilla native entry as the slow path.
+ BLOCK_COMMENT("} CRC32_updateBytes(Buffer)");
+ BIND(slow_path);
+ __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::native), R11_scratch1);
+ return start;
+ }
+
+ return NULL;
+}
+
+// =============================================================================
+// Exceptions
+
+void TemplateInterpreterGenerator::generate_throw_exception() {
+ Register Rexception = R17_tos,
+ Rcontinuation = R3_RET;
+
+ // --------------------------------------------------------------------------
+ // Entry point if an method returns with a pending exception (rethrow).
+ Interpreter::_rethrow_exception_entry = __ pc();
+ {
+ __ restore_interpreter_state(R11_scratch1); // Sets R11_scratch1 = fp.
+ __ ld(R12_scratch2, _ijava_state_neg(top_frame_sp), R11_scratch1);
+ __ resize_frame_absolute(R12_scratch2, R11_scratch1, R0);
+
+ // Compiled code destroys templateTableBase, reload.
+ __ load_const_optimized(R25_templateTableBase, (address)Interpreter::dispatch_table((TosState)0), R11_scratch1);
+ }
+
+ // Entry point if a interpreted method throws an exception (throw).
+ Interpreter::_throw_exception_entry = __ pc();
+ {
+ __ mr(Rexception, R3_RET);
+
+ __ verify_thread();
+ __ verify_oop(Rexception);
+
+ // Expression stack must be empty before entering the VM in case of an exception.
+ __ empty_expression_stack();
+ // Find exception handler address and preserve exception oop.
+ // Call C routine to find handler and jump to it.
+ __ call_VM(Rexception, CAST_FROM_FN_PTR(address, InterpreterRuntime::exception_handler_for_exception), Rexception);
+ __ mtctr(Rcontinuation);
+ // Push exception for exception handler bytecodes.
+ __ push_ptr(Rexception);
+
+ // Jump to exception handler (may be remove activation entry!).
+ __ bctr();
+ }
+
+ // If the exception is not handled in the current frame the frame is
+ // removed and the exception is rethrown (i.e. exception
+ // continuation is _rethrow_exception).
+ //
+ // Note: At this point the bci is still the bxi for the instruction
+ // which caused the exception and the expression stack is
+ // empty. Thus, for any VM calls at this point, GC will find a legal
+ // oop map (with empty expression stack).
+
+ // In current activation
+ // tos: exception
+ // bcp: exception bcp
+
+ // --------------------------------------------------------------------------
+ // JVMTI PopFrame support
+
+ Interpreter::_remove_activation_preserving_args_entry = __ pc();
+ {
+ // Set the popframe_processing bit in popframe_condition indicating that we are
+ // currently handling popframe, so that call_VMs that may happen later do not
+ // trigger new popframe handling cycles.
+ __ lwz(R11_scratch1, in_bytes(JavaThread::popframe_condition_offset()), R16_thread);
+ __ ori(R11_scratch1, R11_scratch1, JavaThread::popframe_processing_bit);
+ __ stw(R11_scratch1, in_bytes(JavaThread::popframe_condition_offset()), R16_thread);
+
+ // Empty the expression stack, as in normal exception handling.
+ __ empty_expression_stack();
+ __ unlock_if_synchronized_method(vtos, /* throw_monitor_exception */ false, /* install_monitor_exception */ false);
+
+ // Check to see whether we are returning to a deoptimized frame.
+ // (The PopFrame call ensures that the caller of the popped frame is
+ // either interpreted or compiled and deoptimizes it if compiled.)
+ // Note that we don't compare the return PC against the
+ // deoptimization blob's unpack entry because of the presence of
+ // adapter frames in C2.
+ Label Lcaller_not_deoptimized;
+ Register return_pc = R3_ARG1;
+ __ ld(return_pc, 0, R1_SP);
+ __ ld(return_pc, _abi(lr), return_pc);
+ __ call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::interpreter_contains), return_pc);
+ __ cmpdi(CCR0, R3_RET, 0);
+ __ bne(CCR0, Lcaller_not_deoptimized);
+
+ // The deoptimized case.
+ // In this case, we can't call dispatch_next() after the frame is
+ // popped, but instead must save the incoming arguments and restore
+ // them after deoptimization has occurred.
+ __ ld(R4_ARG2, in_bytes(Method::const_offset()), R19_method);
+ __ lhz(R4_ARG2 /* number of params */, in_bytes(ConstMethod::size_of_parameters_offset()), R4_ARG2);
+ __ slwi(R4_ARG2, R4_ARG2, Interpreter::logStackElementSize);
+ __ addi(R5_ARG3, R18_locals, Interpreter::stackElementSize);
+ __ subf(R5_ARG3, R4_ARG2, R5_ARG3);
+ // Save these arguments.
+ __ call_VM_leaf(CAST_FROM_FN_PTR(address, Deoptimization::popframe_preserve_args), R16_thread, R4_ARG2, R5_ARG3);
+
+ // Inform deoptimization that it is responsible for restoring these arguments.
+ __ load_const_optimized(R11_scratch1, JavaThread::popframe_force_deopt_reexecution_bit);
+ __ stw(R11_scratch1, in_bytes(JavaThread::popframe_condition_offset()), R16_thread);
+
+ // Return from the current method into the deoptimization blob. Will eventually
+ // end up in the deopt interpeter entry, deoptimization prepared everything that
+ // we will reexecute the call that called us.
+ __ merge_frames(/*top_frame_sp*/ R21_sender_SP, /*reload return_pc*/ return_pc, R11_scratch1, R12_scratch2);
+ __ mtlr(return_pc);
+ __ blr();
+
+ // The non-deoptimized case.
+ __ bind(Lcaller_not_deoptimized);
+
+ // Clear the popframe condition flag.
+ __ li(R0, 0);
+ __ stw(R0, in_bytes(JavaThread::popframe_condition_offset()), R16_thread);
+
+ // Get out of the current method and re-execute the call that called us.
+ __ merge_frames(/*top_frame_sp*/ R21_sender_SP, /*return_pc*/ noreg, R11_scratch1, R12_scratch2);
+ __ restore_interpreter_state(R11_scratch1);
+ __ ld(R12_scratch2, _ijava_state_neg(top_frame_sp), R11_scratch1);
+ __ resize_frame_absolute(R12_scratch2, R11_scratch1, R0);
+ if (ProfileInterpreter) {
+ __ set_method_data_pointer_for_bcp();
+ __ ld(R11_scratch1, 0, R1_SP);
+ __ std(R28_mdx, _ijava_state_neg(mdx), R11_scratch1);
+ }
+#if INCLUDE_JVMTI
+ Label L_done;
+
+ __ lbz(R11_scratch1, 0, R14_bcp);
+ __ cmpwi(CCR0, R11_scratch1, Bytecodes::_invokestatic);
+ __ bne(CCR0, L_done);
+
+ // The member name argument must be restored if _invokestatic is re-executed after a PopFrame call.
+ // Detect such a case in the InterpreterRuntime function and return the member name argument, or NULL.
+ __ ld(R4_ARG2, 0, R18_locals);
+ __ MacroAssembler::call_VM(R4_ARG2, CAST_FROM_FN_PTR(address, InterpreterRuntime::member_name_arg_or_null), R4_ARG2, R19_method, R14_bcp, false);
+ __ restore_interpreter_state(R11_scratch1, /*bcp_and_mdx_only*/ true);
+ __ cmpdi(CCR0, R4_ARG2, 0);
+ __ beq(CCR0, L_done);
+ __ std(R4_ARG2, wordSize, R15_esp);
+ __ bind(L_done);
+#endif // INCLUDE_JVMTI
+ __ dispatch_next(vtos);
+ }
+ // end of JVMTI PopFrame support
+
+ // --------------------------------------------------------------------------
+ // Remove activation exception entry.
+ // This is jumped to if an interpreted method can't handle an exception itself
+ // (we come from the throw/rethrow exception entry above). We're going to call
+ // into the VM to find the exception handler in the caller, pop the current
+ // frame and return the handler we calculated.
+ Interpreter::_remove_activation_entry = __ pc();
+ {
+ __ pop_ptr(Rexception);
+ __ verify_thread();
+ __ verify_oop(Rexception);
+ __ std(Rexception, in_bytes(JavaThread::vm_result_offset()), R16_thread);
+
+ __ unlock_if_synchronized_method(vtos, /* throw_monitor_exception */ false, true);
+ __ notify_method_exit(false, vtos, InterpreterMacroAssembler::SkipNotifyJVMTI, false);
+
+ __ get_vm_result(Rexception);
+
+ // We are done with this activation frame; find out where to go next.
+ // The continuation point will be an exception handler, which expects
+ // the following registers set up:
+ //
+ // RET: exception oop
+ // ARG2: Issuing PC (see generate_exception_blob()), only used if the caller is compiled.
+
+ Register return_pc = R31; // Needs to survive the runtime call.
+ __ ld(return_pc, 0, R1_SP);
+ __ ld(return_pc, _abi(lr), return_pc);
+ __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), R16_thread, return_pc);
+
+ // Remove the current activation.
+ __ merge_frames(/*top_frame_sp*/ R21_sender_SP, /*return_pc*/ noreg, R11_scratch1, R12_scratch2);
+
+ __ mr(R4_ARG2, return_pc);
+ __ mtlr(R3_RET);
+ __ mr(R3_RET, Rexception);
+ __ blr();
+ }
+}
+
+// JVMTI ForceEarlyReturn support.
+// Returns "in the middle" of a method with a "fake" return value.
+address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) {
+
+ Register Rscratch1 = R11_scratch1,
+ Rscratch2 = R12_scratch2;
+
+ address entry = __ pc();
+ __ empty_expression_stack();
+
+ __ load_earlyret_value(state, Rscratch1);
+
+ __ ld(Rscratch1, in_bytes(JavaThread::jvmti_thread_state_offset()), R16_thread);
+ // Clear the earlyret state.
+ __ li(R0, 0);
+ __ stw(R0, in_bytes(JvmtiThreadState::earlyret_state_offset()), Rscratch1);
+
+ __ remove_activation(state, false, false);
+ // Copied from TemplateTable::_return.
+ // Restoration of lr done by remove_activation.
+ switch (state) {
+ case ltos:
+ case btos:
+ case ctos:
+ case stos:
+ case atos:
+ case itos: __ mr(R3_RET, R17_tos); break;
+ case ftos:
+ case dtos: __ fmr(F1_RET, F15_ftos); break;
+ case vtos: // This might be a constructor. Final fields (and volatile fields on PPC64) need
+ // to get visible before the reference to the object gets stored anywhere.
+ __ membar(Assembler::StoreStore); break;
+ default : ShouldNotReachHere();
+ }
+ __ blr();
+
+ return entry;
+} // end of ForceEarlyReturn support
+
+//-----------------------------------------------------------------------------
+// Helper for vtos entry point generation
+
+void TemplateInterpreterGenerator::set_vtos_entry_points(Template* t,
+ address& bep,
+ address& cep,
+ address& sep,
+ address& aep,
+ address& iep,
+ address& lep,
+ address& fep,
+ address& dep,
+ address& vep) {
+ assert(t->is_valid() && t->tos_in() == vtos, "illegal template");
+ Label L;
+
+ aep = __ pc(); __ push_ptr(); __ b(L);
+ fep = __ pc(); __ push_f(); __ b(L);
+ dep = __ pc(); __ push_d(); __ b(L);
+ lep = __ pc(); __ push_l(); __ b(L);
+ __ align(32, 12, 24); // align L
+ bep = cep = sep =
+ iep = __ pc(); __ push_i();
+ vep = __ pc();
+ __ bind(L);
+ generate_and_dispatch(t);
+}
+
+//-----------------------------------------------------------------------------
+// Generation of individual instructions
+
+// helpers for generate_and_dispatch
+
+InterpreterGenerator::InterpreterGenerator(StubQueue* code)
+ : TemplateInterpreterGenerator(code) {
+ generate_all(); // Down here so it can be "virtual".
+}
+
+//-----------------------------------------------------------------------------
+
+// Non-product code
+#ifndef PRODUCT
+address TemplateInterpreterGenerator::generate_trace_code(TosState state) {
+ //__ flush_bundle();
+ address entry = __ pc();
+
+ const char *bname = NULL;
+ uint tsize = 0;
+ switch(state) {
+ case ftos:
+ bname = "trace_code_ftos {";
+ tsize = 2;
+ break;
+ case btos:
+ bname = "trace_code_btos {";
+ tsize = 2;
+ break;
+ case ctos:
+ bname = "trace_code_ctos {";
+ tsize = 2;
+ break;
+ case stos:
+ bname = "trace_code_stos {";
+ tsize = 2;
+ break;
+ case itos:
+ bname = "trace_code_itos {";
+ tsize = 2;
+ break;
+ case ltos:
+ bname = "trace_code_ltos {";
+ tsize = 3;
+ break;
+ case atos:
+ bname = "trace_code_atos {";
+ tsize = 2;
+ break;
+ case vtos:
+ // Note: In case of vtos, the topmost of stack value could be a int or doubl
+ // In case of a double (2 slots) we won't see the 2nd stack value.
+ // Maybe we simply should print the topmost 3 stack slots to cope with the problem.
+ bname = "trace_code_vtos {";
+ tsize = 2;
+
+ break;
+ case dtos:
+ bname = "trace_code_dtos {";
+ tsize = 3;
+ break;
+ default:
+ ShouldNotReachHere();
+ }
+ BLOCK_COMMENT(bname);
+
+ // Support short-cut for TraceBytecodesAt.
+ // Don't call into the VM if we don't want to trace to speed up things.
+ Label Lskip_vm_call;
+ if (TraceBytecodesAt > 0 && TraceBytecodesAt < max_intx) {
+ int offs1 = __ load_const_optimized(R11_scratch1, (address) &TraceBytecodesAt, R0, true);
+ int offs2 = __ load_const_optimized(R12_scratch2, (address) &BytecodeCounter::_counter_value, R0, true);
+ __ ld(R11_scratch1, offs1, R11_scratch1);
+ __ lwa(R12_scratch2, offs2, R12_scratch2);
+ __ cmpd(CCR0, R12_scratch2, R11_scratch1);
+ __ blt(CCR0, Lskip_vm_call);
+ }
+
+ __ push(state);
+ // Load 2 topmost expression stack values.
+ __ ld(R6_ARG4, tsize*Interpreter::stackElementSize, R15_esp);
+ __ ld(R5_ARG3, Interpreter::stackElementSize, R15_esp);
+ __ mflr(R31);
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), /* unused */ R4_ARG2, R5_ARG3, R6_ARG4, false);
+ __ mtlr(R31);
+ __ pop(state);
+
+ if (TraceBytecodesAt > 0 && TraceBytecodesAt < max_intx) {
+ __ bind(Lskip_vm_call);
+ }
+ __ blr();
+ BLOCK_COMMENT("} trace_code");
+ return entry;
+}
+
+void TemplateInterpreterGenerator::count_bytecode() {
+ int offs = __ load_const_optimized(R11_scratch1, (address) &BytecodeCounter::_counter_value, R12_scratch2, true);
+ __ lwz(R12_scratch2, offs, R11_scratch1);
+ __ addi(R12_scratch2, R12_scratch2, 1);
+ __ stw(R12_scratch2, offs, R11_scratch1);
+}
+
+void TemplateInterpreterGenerator::histogram_bytecode(Template* t) {
+ int offs = __ load_const_optimized(R11_scratch1, (address) &BytecodeHistogram::_counters[t->bytecode()], R12_scratch2, true);
+ __ lwz(R12_scratch2, offs, R11_scratch1);
+ __ addi(R12_scratch2, R12_scratch2, 1);
+ __ stw(R12_scratch2, offs, R11_scratch1);
+}
+
+void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) {
+ const Register addr = R11_scratch1,
+ tmp = R12_scratch2;
+ // Get index, shift out old bytecode, bring in new bytecode, and store it.
+ // _index = (_index >> log2_number_of_codes) |
+ // (bytecode << log2_number_of_codes);
+ int offs1 = __ load_const_optimized(addr, (address)&BytecodePairHistogram::_index, tmp, true);
+ __ lwz(tmp, offs1, addr);
+ __ srwi(tmp, tmp, BytecodePairHistogram::log2_number_of_codes);
+ __ ori(tmp, tmp, ((int) t->bytecode()) << BytecodePairHistogram::log2_number_of_codes);
+ __ stw(tmp, offs1, addr);
+
+ // Bump bucket contents.
+ // _counters[_index] ++;
+ int offs2 = __ load_const_optimized(addr, (address)&BytecodePairHistogram::_counters, R0, true);
+ __ sldi(tmp, tmp, LogBytesPerInt);
+ __ add(addr, tmp, addr);
+ __ lwz(tmp, offs2, addr);
+ __ addi(tmp, tmp, 1);
+ __ stw(tmp, offs2, addr);
+}
+
+void TemplateInterpreterGenerator::trace_bytecode(Template* t) {
+ // Call a little run-time stub to avoid blow-up for each bytecode.
+ // The run-time runtime saves the right registers, depending on
+ // the tosca in-state for the given template.
+
+ assert(Interpreter::trace_code(t->tos_in()) != NULL,
+ "entry must have been generated");
+
+ // Note: we destroy LR here.
+ __ bl(Interpreter::trace_code(t->tos_in()));
+}
+
+void TemplateInterpreterGenerator::stop_interpreter_at() {
+ Label L;
+ int offs1 = __ load_const_optimized(R11_scratch1, (address) &StopInterpreterAt, R0, true);
+ int offs2 = __ load_const_optimized(R12_scratch2, (address) &BytecodeCounter::_counter_value, R0, true);
+ __ ld(R11_scratch1, offs1, R11_scratch1);
+ __ lwa(R12_scratch2, offs2, R12_scratch2);
+ __ cmpd(CCR0, R12_scratch2, R11_scratch1);
+ __ bne(CCR0, L);
+ __ illtrap();
+ __ bind(L);
+}
+
+#endif // !PRODUCT
+#endif // !CC_INTERP
--- a/hotspot/src/cpu/ppc/vm/templateInterpreter_ppc.cpp Sat Dec 05 15:17:29 2015 +0100
+++ b/hotspot/src/cpu/ppc/vm/templateInterpreter_ppc.cpp Sat Dec 05 17:14:02 2015 +0000
@@ -1,6 +1,6 @@
/*
* Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
- * Copyright 2013, 2015 SAP AG. All rights reserved.
+ * Copyright (c) 2015 SAP AG. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -24,1389 +24,38 @@
*/
#include "precompiled.hpp"
-#ifndef CC_INTERP
-#include "asm/macroAssembler.inline.hpp"
-#include "interpreter/bytecodeHistogram.hpp"
#include "interpreter/interpreter.hpp"
-#include "interpreter/interpreterGenerator.hpp"
-#include "interpreter/interpreterRuntime.hpp"
-#include "interpreter/interp_masm.hpp"
-#include "interpreter/templateTable.hpp"
-#include "oops/arrayOop.hpp"
-#include "oops/methodData.hpp"
+#include "oops/constMethod.hpp"
#include "oops/method.hpp"
-#include "oops/oop.inline.hpp"
-#include "prims/jvmtiExport.hpp"
-#include "prims/jvmtiThreadState.hpp"
-#include "runtime/arguments.hpp"
-#include "runtime/deoptimization.hpp"
#include "runtime/frame.inline.hpp"
-#include "runtime/sharedRuntime.hpp"
-#include "runtime/stubRoutines.hpp"
-#include "runtime/synchronizer.hpp"
-#include "runtime/timer.hpp"
-#include "runtime/vframeArray.hpp"
#include "utilities/debug.hpp"
#include "utilities/macros.hpp"
-#undef __
-#define __ _masm->
-#ifdef PRODUCT
-#define BLOCK_COMMENT(str) /* nothing */
-#else
-#define BLOCK_COMMENT(str) __ block_comment(str)
-#endif
-
-#define BIND(label) __ bind(label); BLOCK_COMMENT(#label ":")
-
-//-----------------------------------------------------------------------------
-
-// Actually we should never reach here since we do stack overflow checks before pushing any frame.
-address TemplateInterpreterGenerator::generate_StackOverflowError_handler() {
- address entry = __ pc();
- __ unimplemented("generate_StackOverflowError_handler");
- return entry;
-}
-
-address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler(const char* name) {
- address entry = __ pc();
- __ empty_expression_stack();
- __ load_const_optimized(R4_ARG2, (address) name);
- // Index is in R17_tos.
- __ mr(R5_ARG3, R17_tos);
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException));
- return entry;
-}
-
-#if 0
-// Call special ClassCastException constructor taking object to cast
-// and target class as arguments.
-address TemplateInterpreterGenerator::generate_ClassCastException_verbose_handler() {
- address entry = __ pc();
-
- // Expression stack must be empty before entering the VM if an
- // exception happened.
- __ empty_expression_stack();
-
- // Thread will be loaded to R3_ARG1.
- // Target class oop is in register R5_ARG3 by convention!
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_ClassCastException_verbose), R17_tos, R5_ARG3);
- // Above call must not return here since exception pending.
- DEBUG_ONLY(__ should_not_reach_here();)
- return entry;
-}
-#endif
-
-address TemplateInterpreterGenerator::generate_ClassCastException_handler() {
- address entry = __ pc();
- // Expression stack must be empty before entering the VM if an
- // exception happened.
- __ empty_expression_stack();
-
- // Load exception object.
- // Thread will be loaded to R3_ARG1.
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_ClassCastException), R17_tos);
-#ifdef ASSERT
- // Above call must not return here since exception pending.
- __ should_not_reach_here();
-#endif
- return entry;
-}
-
-address TemplateInterpreterGenerator::generate_exception_handler_common(const char* name, const char* message, bool pass_oop) {
- address entry = __ pc();
- //__ untested("generate_exception_handler_common");
- Register Rexception = R17_tos;
-
- // Expression stack must be empty before entering the VM if an exception happened.
- __ empty_expression_stack();
-
- __ load_const_optimized(R4_ARG2, (address) name, R11_scratch1);
- if (pass_oop) {
- __ mr(R5_ARG3, Rexception);
- __ call_VM(Rexception, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_klass_exception), false);
- } else {
- __ load_const_optimized(R5_ARG3, (address) message, R11_scratch1);
- __ call_VM(Rexception, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), false);
- }
-
- // Throw exception.
- __ mr(R3_ARG1, Rexception);
- __ load_const_optimized(R11_scratch1, Interpreter::throw_exception_entry(), R12_scratch2);
- __ mtctr(R11_scratch1);
- __ bctr();
-
- return entry;
-}
-
-address TemplateInterpreterGenerator::generate_continuation_for(TosState state) {
- address entry = __ pc();
- __ unimplemented("generate_continuation_for");
- return entry;
-}
-
-// This entry is returned to when a call returns to the interpreter.
-// When we arrive here, we expect that the callee stack frame is already popped.
-address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step, size_t index_size) {
- address entry = __ pc();
-
- // Move the value out of the return register back to the TOS cache of current frame.
- switch (state) {
- case ltos:
- case btos:
- case ctos:
- case stos:
- case atos:
- case itos: __ mr(R17_tos, R3_RET); break; // RET -> TOS cache
- case ftos:
- case dtos: __ fmr(F15_ftos, F1_RET); break; // TOS cache -> GR_FRET
- case vtos: break; // Nothing to do, this was a void return.
- default : ShouldNotReachHere();
- }
-
- __ restore_interpreter_state(R11_scratch1); // Sets R11_scratch1 = fp.
- __ ld(R12_scratch2, _ijava_state_neg(top_frame_sp), R11_scratch1);
- __ resize_frame_absolute(R12_scratch2, R11_scratch1, R0);
-
- // Compiled code destroys templateTableBase, reload.
- __ load_const_optimized(R25_templateTableBase, (address)Interpreter::dispatch_table((TosState)0), R12_scratch2);
-
- if (state == atos) {
- __ profile_return_type(R3_RET, R11_scratch1, R12_scratch2);
- }
-
- const Register cache = R11_scratch1;
- const Register size = R12_scratch2;
- __ get_cache_and_index_at_bcp(cache, 1, index_size);
-
- // Get least significant byte of 64 bit value:
-#if defined(VM_LITTLE_ENDIAN)
- __ lbz(size, in_bytes(ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::flags_offset()), cache);
-#else
- __ lbz(size, in_bytes(ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::flags_offset()) + 7, cache);
-#endif
- __ sldi(size, size, Interpreter::logStackElementSize);
- __ add(R15_esp, R15_esp, size);
- __ dispatch_next(state, step);
- return entry;
-}
-
-address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, int step) {
- address entry = __ pc();
- // If state != vtos, we're returning from a native method, which put it's result
- // into the result register. So move the value out of the return register back
- // to the TOS cache of current frame.
-
- switch (state) {
- case ltos:
- case btos:
- case ctos:
- case stos:
- case atos:
- case itos: __ mr(R17_tos, R3_RET); break; // GR_RET -> TOS cache
- case ftos:
- case dtos: __ fmr(F15_ftos, F1_RET); break; // TOS cache -> GR_FRET
- case vtos: break; // Nothing to do, this was a void return.
- default : ShouldNotReachHere();
- }
-
- // Load LcpoolCache @@@ should be already set!
- __ get_constant_pool_cache(R27_constPoolCache);
-
- // Handle a pending exception, fall through if none.
- __ check_and_forward_exception(R11_scratch1, R12_scratch2);
-
- // Start executing bytecodes.
- __ dispatch_next(state, step);
-
- return entry;
-}
-
-// A result handler converts the native result into java format.
-// Use the shared code between c++ and template interpreter.
-address TemplateInterpreterGenerator::generate_result_handler_for(BasicType type) {
- return AbstractInterpreterGenerator::generate_result_handler_for(type);
-}
-
-address TemplateInterpreterGenerator::generate_safept_entry_for(TosState state, address runtime_entry) {
- address entry = __ pc();
-
- __ push(state);
- __ call_VM(noreg, runtime_entry);
- __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos));
-
- return entry;
-}
-
-// Helpers for commoning out cases in the various type of method entries.
-
-// Increment invocation count & check for overflow.
-//
-// Note: checking for negative value instead of overflow
-// so we have a 'sticky' overflow test.
-//
-void TemplateInterpreterGenerator::generate_counter_incr(Label* overflow, Label* profile_method, Label* profile_method_continue) {
- // Note: In tiered we increment either counters in method or in MDO depending if we're profiling or not.
- Register Rscratch1 = R11_scratch1;
- Register Rscratch2 = R12_scratch2;
- Register R3_counters = R3_ARG1;
- Label done;
-
- if (TieredCompilation) {
- const int increment = InvocationCounter::count_increment;
- const int mask = ((1 << Tier0InvokeNotifyFreqLog) - 1) << InvocationCounter::count_shift;
- Label no_mdo;
- if (ProfileInterpreter) {
- const Register Rmdo = Rscratch1;
- // If no method data exists, go to profile_continue.
- __ ld(Rmdo, in_bytes(Method::method_data_offset()), R19_method);
- __ cmpdi(CCR0, Rmdo, 0);
- __ beq(CCR0, no_mdo);
-
- // Increment backedge counter in the MDO.
- const int mdo_bc_offs = in_bytes(MethodData::backedge_counter_offset()) + in_bytes(InvocationCounter::counter_offset());
- __ lwz(Rscratch2, mdo_bc_offs, Rmdo);
- __ addi(Rscratch2, Rscratch2, increment);
- __ stw(Rscratch2, mdo_bc_offs, Rmdo);
- __ load_const_optimized(Rscratch1, mask, R0);
- __ and_(Rscratch1, Rscratch2, Rscratch1);
- __ bne(CCR0, done);
- __ b(*overflow);
- }
-
- // Increment counter in MethodCounters*.
- const int mo_bc_offs = in_bytes(MethodCounters::backedge_counter_offset()) + in_bytes(InvocationCounter::counter_offset());
- __ bind(no_mdo);
- __ get_method_counters(R19_method, R3_counters, done);
- __ lwz(Rscratch2, mo_bc_offs, R3_counters);
- __ addi(Rscratch2, Rscratch2, increment);
- __ stw(Rscratch2, mo_bc_offs, R3_counters);
- __ load_const_optimized(Rscratch1, mask, R0);
- __ and_(Rscratch1, Rscratch2, Rscratch1);
- __ beq(CCR0, *overflow);
-
- __ bind(done);
-
- } else {
-
- // Update standard invocation counters.
- Register Rsum_ivc_bec = R4_ARG2;
- __ get_method_counters(R19_method, R3_counters, done);
- __ increment_invocation_counter(R3_counters, Rsum_ivc_bec, R12_scratch2);
- // Increment interpreter invocation counter.
- if (ProfileInterpreter) { // %%% Merge this into methodDataOop.
- __ lwz(R12_scratch2, in_bytes(MethodCounters::interpreter_invocation_counter_offset()), R3_counters);
- __ addi(R12_scratch2, R12_scratch2, 1);
- __ stw(R12_scratch2, in_bytes(MethodCounters::interpreter_invocation_counter_offset()), R3_counters);
- }
- // Check if we must create a method data obj.
- if (ProfileInterpreter && profile_method != NULL) {
- const Register profile_limit = Rscratch1;
- int pl_offs = __ load_const_optimized(profile_limit, &InvocationCounter::InterpreterProfileLimit, R0, true);
- __ lwz(profile_limit, pl_offs, profile_limit);
- // Test to see if we should create a method data oop.
- __ cmpw(CCR0, Rsum_ivc_bec, profile_limit);
- __ blt(CCR0, *profile_method_continue);
- // If no method data exists, go to profile_method.
- __ test_method_data_pointer(*profile_method);
- }
- // Finally check for counter overflow.
- if (overflow) {
- const Register invocation_limit = Rscratch1;
- int il_offs = __ load_const_optimized(invocation_limit, &InvocationCounter::InterpreterInvocationLimit, R0, true);
- __ lwz(invocation_limit, il_offs, invocation_limit);
- assert(4 == sizeof(InvocationCounter::InterpreterInvocationLimit), "unexpected field size");
- __ cmpw(CCR0, Rsum_ivc_bec, invocation_limit);
- __ bge(CCR0, *overflow);
- }
-
- __ bind(done);
- }
-}
-
-// Generate code to initiate compilation on invocation counter overflow.
-void TemplateInterpreterGenerator::generate_counter_overflow(Label& continue_entry) {
- // Generate code to initiate compilation on the counter overflow.
-
- // InterpreterRuntime::frequency_counter_overflow takes one arguments,
- // which indicates if the counter overflow occurs at a backwards branch (NULL bcp)
- // We pass zero in.
- // The call returns the address of the verified entry point for the method or NULL
- // if the compilation did not complete (either went background or bailed out).
- //
- // Unlike the C++ interpreter above: Check exceptions!
- // Assumption: Caller must set the flag "do_not_unlock_if_sychronized" if the monitor of a sync'ed
- // method has not yet been created. Thus, no unlocking of a non-existing monitor can occur.
-
- __ li(R4_ARG2, 0);
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), R4_ARG2, true);
-
- // Returns verified_entry_point or NULL.
- // We ignore it in any case.
- __ b(continue_entry);
-}
-
-void TemplateInterpreterGenerator::generate_stack_overflow_check(Register Rmem_frame_size, Register Rscratch1) {
- assert_different_registers(Rmem_frame_size, Rscratch1);
- __ generate_stack_overflow_check_with_compare_and_throw(Rmem_frame_size, Rscratch1);
-}
-
-void TemplateInterpreterGenerator::unlock_method(bool check_exceptions) {
- __ unlock_object(R26_monitor, check_exceptions);
-}
-
-// Lock the current method, interpreter register window must be set up!
-void TemplateInterpreterGenerator::lock_method(Register Rflags, Register Rscratch1, Register Rscratch2, bool flags_preloaded) {
- const Register Robj_to_lock = Rscratch2;
-
- {
- if (!flags_preloaded) {
- __ lwz(Rflags, method_(access_flags));
- }
-
-#ifdef ASSERT
- // Check if methods needs synchronization.
- {
- Label Lok;
- __ testbitdi(CCR0, R0, Rflags, JVM_ACC_SYNCHRONIZED_BIT);
- __ btrue(CCR0,Lok);
- __ stop("method doesn't need synchronization");
- __ bind(Lok);
- }
-#endif // ASSERT
- }
-
- // Get synchronization object to Rscratch2.
- {
- const int mirror_offset = in_bytes(Klass::java_mirror_offset());
- Label Lstatic;
- Label Ldone;
-
- __ testbitdi(CCR0, R0, Rflags, JVM_ACC_STATIC_BIT);
- __ btrue(CCR0, Lstatic);
-
- // Non-static case: load receiver obj from stack and we're done.
- __ ld(Robj_to_lock, R18_locals);
- __ b(Ldone);
-
- __ bind(Lstatic); // Static case: Lock the java mirror
- __ ld(Robj_to_lock, in_bytes(Method::const_offset()), R19_method);
- __ ld(Robj_to_lock, in_bytes(ConstMethod::constants_offset()), Robj_to_lock);
- __ ld(Robj_to_lock, ConstantPool::pool_holder_offset_in_bytes(), Robj_to_lock);
- __ ld(Robj_to_lock, mirror_offset, Robj_to_lock);
-
- __ bind(Ldone);
- __ verify_oop(Robj_to_lock);
- }
-
- // Got the oop to lock => execute!
- __ add_monitor_to_stack(true, Rscratch1, R0);
-
- __ std(Robj_to_lock, BasicObjectLock::obj_offset_in_bytes(), R26_monitor);
- __ lock_object(R26_monitor, Robj_to_lock);
-}
-
-// Generate a fixed interpreter frame for pure interpreter
-// and I2N native transition frames.
-//
-// Before (stack grows downwards):
-//
-// | ... |
-// |------------- |
-// | java arg0 |
-// | ... |
-// | java argn |
-// | | <- R15_esp
-// | |
-// |--------------|
-// | abi_112 |
-// | | <- R1_SP
-// |==============|
-//
-//
-// After:
-//
-// | ... |
-// | java arg0 |<- R18_locals
-// | ... |
-// | java argn |
-// |--------------|
-// | |
-// | java locals |
-// | |
-// |--------------|
-// | abi_48 |
-// |==============|
-// | |
-// | istate |
-// | |
-// |--------------|
-// | monitor |<- R26_monitor
-// |--------------|
-// | |<- R15_esp
-// | expression |
-// | stack |
-// | |
-// |--------------|
-// | |
-// | abi_112 |<- R1_SP
-// |==============|
-//
-// The top most frame needs an abi space of 112 bytes. This space is needed,
-// since we call to c. The c function may spill their arguments to the caller
-// frame. When we call to java, we don't need these spill slots. In order to save
-// space on the stack, we resize the caller. However, java local reside in
-// the caller frame and the frame has to be increased. The frame_size for the
-// current frame was calculated based on max_stack as size for the expression
-// stack. At the call, just a part of the expression stack might be used.
-// We don't want to waste this space and cut the frame back accordingly.
-// The resulting amount for resizing is calculated as follows:
-// resize = (number_of_locals - number_of_arguments) * slot_size
-// + (R1_SP - R15_esp) + 48
-//
-// The size for the callee frame is calculated:
-// framesize = 112 + max_stack + monitor + state_size
-//
-// maxstack: Max number of slots on the expression stack, loaded from the method.
-// monitor: We statically reserve room for one monitor object.
-// state_size: We save the current state of the interpreter to this area.
-//
-void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call, Register Rsize_of_parameters, Register Rsize_of_locals) {
- Register parent_frame_resize = R6_ARG4, // Frame will grow by this number of bytes.
- top_frame_size = R7_ARG5,
- Rconst_method = R8_ARG6;
-
- assert_different_registers(Rsize_of_parameters, Rsize_of_locals, parent_frame_resize, top_frame_size);
-
- __ ld(Rconst_method, method_(const));
- __ lhz(Rsize_of_parameters /* number of params */,
- in_bytes(ConstMethod::size_of_parameters_offset()), Rconst_method);
- if (native_call) {
- // If we're calling a native method, we reserve space for the worst-case signature
- // handler varargs vector, which is max(Argument::n_register_parameters, parameter_count+2).
- // We add two slots to the parameter_count, one for the jni
- // environment and one for a possible native mirror.
- Label skip_native_calculate_max_stack;
- __ addi(top_frame_size, Rsize_of_parameters, 2);
- __ cmpwi(CCR0, top_frame_size, Argument::n_register_parameters);
- __ bge(CCR0, skip_native_calculate_max_stack);
- __ li(top_frame_size, Argument::n_register_parameters);
- __ bind(skip_native_calculate_max_stack);
- __ sldi(Rsize_of_parameters, Rsize_of_parameters, Interpreter::logStackElementSize);
- __ sldi(top_frame_size, top_frame_size, Interpreter::logStackElementSize);
- __ sub(parent_frame_resize, R1_SP, R15_esp); // <0, off by Interpreter::stackElementSize!
- assert(Rsize_of_locals == noreg, "Rsize_of_locals not initialized"); // Only relevant value is Rsize_of_parameters.
- } else {
- __ lhz(Rsize_of_locals /* number of params */, in_bytes(ConstMethod::size_of_locals_offset()), Rconst_method);
- __ sldi(Rsize_of_parameters, Rsize_of_parameters, Interpreter::logStackElementSize);
- __ sldi(Rsize_of_locals, Rsize_of_locals, Interpreter::logStackElementSize);
- __ lhz(top_frame_size, in_bytes(ConstMethod::max_stack_offset()), Rconst_method);
- __ sub(R11_scratch1, Rsize_of_locals, Rsize_of_parameters); // >=0
- __ sub(parent_frame_resize, R1_SP, R15_esp); // <0, off by Interpreter::stackElementSize!
- __ sldi(top_frame_size, top_frame_size, Interpreter::logStackElementSize);
- __ add(parent_frame_resize, parent_frame_resize, R11_scratch1);
- }
-
- // Compute top frame size.
- __ addi(top_frame_size, top_frame_size, frame::abi_reg_args_size + frame::ijava_state_size);
-
- // Cut back area between esp and max_stack.
- __ addi(parent_frame_resize, parent_frame_resize, frame::abi_minframe_size - Interpreter::stackElementSize);
-
- __ round_to(top_frame_size, frame::alignment_in_bytes);
- __ round_to(parent_frame_resize, frame::alignment_in_bytes);
- // parent_frame_resize = (locals-parameters) - (ESP-SP-ABI48) Rounded to frame alignment size.
- // Enlarge by locals-parameters (not in case of native_call), shrink by ESP-SP-ABI48.
-
- {
- // --------------------------------------------------------------------------
- // Stack overflow check
-
- Label cont;
- __ add(R11_scratch1, parent_frame_resize, top_frame_size);
- generate_stack_overflow_check(R11_scratch1, R12_scratch2);
- }
-
- // Set up interpreter state registers.
-
- __ add(R18_locals, R15_esp, Rsize_of_parameters);
- __ ld(R27_constPoolCache, in_bytes(ConstMethod::constants_offset()), Rconst_method);
- __ ld(R27_constPoolCache, ConstantPool::cache_offset_in_bytes(), R27_constPoolCache);
-
- // Set method data pointer.
- if (ProfileInterpreter) {
- Label zero_continue;
- __ ld(R28_mdx, method_(method_data));
- __ cmpdi(CCR0, R28_mdx, 0);
- __ beq(CCR0, zero_continue);
- __ addi(R28_mdx, R28_mdx, in_bytes(MethodData::data_offset()));
- __ bind(zero_continue);
- }
-
- if (native_call) {
- __ li(R14_bcp, 0); // Must initialize.
- } else {
- __ add(R14_bcp, in_bytes(ConstMethod::codes_offset()), Rconst_method);
- }
-
- // Resize parent frame.
- __ mflr(R12_scratch2);
- __ neg(parent_frame_resize, parent_frame_resize);
- __ resize_frame(parent_frame_resize, R11_scratch1);
- __ std(R12_scratch2, _abi(lr), R1_SP);
-
- __ addi(R26_monitor, R1_SP, - frame::ijava_state_size);
- __ addi(R15_esp, R26_monitor, - Interpreter::stackElementSize);
-
- // Store values.
- // R15_esp, R14_bcp, R26_monitor, R28_mdx are saved at java calls
- // in InterpreterMacroAssembler::call_from_interpreter.
- __ std(R19_method, _ijava_state_neg(method), R1_SP);
- __ std(R21_sender_SP, _ijava_state_neg(sender_sp), R1_SP);
- __ std(R27_constPoolCache, _ijava_state_neg(cpoolCache), R1_SP);
- __ std(R18_locals, _ijava_state_neg(locals), R1_SP);
-
- // Note: esp, bcp, monitor, mdx live in registers. Hence, the correct version can only
- // be found in the frame after save_interpreter_state is done. This is always true
- // for non-top frames. But when a signal occurs, dumping the top frame can go wrong,
- // because e.g. frame::interpreter_frame_bcp() will not access the correct value
- // (Enhanced Stack Trace).
- // The signal handler does not save the interpreter state into the frame.
- __ li(R0, 0);
-#ifdef ASSERT
- // Fill remaining slots with constants.
- __ load_const_optimized(R11_scratch1, 0x5afe);
- __ load_const_optimized(R12_scratch2, 0xdead);
-#endif
- // We have to initialize some frame slots for native calls (accessed by GC).
- if (native_call) {
- __ std(R26_monitor, _ijava_state_neg(monitors), R1_SP);
- __ std(R14_bcp, _ijava_state_neg(bcp), R1_SP);
- if (ProfileInterpreter) { __ std(R28_mdx, _ijava_state_neg(mdx), R1_SP); }
- }
-#ifdef ASSERT
- else {
- __ std(R12_scratch2, _ijava_state_neg(monitors), R1_SP);
- __ std(R12_scratch2, _ijava_state_neg(bcp), R1_SP);
- __ std(R12_scratch2, _ijava_state_neg(mdx), R1_SP);
- }
- __ std(R11_scratch1, _ijava_state_neg(ijava_reserved), R1_SP);
- __ std(R12_scratch2, _ijava_state_neg(esp), R1_SP);
- __ std(R12_scratch2, _ijava_state_neg(lresult), R1_SP);
- __ std(R12_scratch2, _ijava_state_neg(fresult), R1_SP);
-#endif
- __ subf(R12_scratch2, top_frame_size, R1_SP);
- __ std(R0, _ijava_state_neg(oop_tmp), R1_SP);
- __ std(R12_scratch2, _ijava_state_neg(top_frame_sp), R1_SP);
-
- // Push top frame.
- __ push_frame(top_frame_size, R11_scratch1);
-}
-
-// End of helpers
-
-
-// Support abs and sqrt like in compiler.
-// For others we can use a normal (native) entry.
-
-inline bool math_entry_available(AbstractInterpreter::MethodKind kind) {
- if (!InlineIntrinsics) return false;
-
- return ((kind==Interpreter::java_lang_math_sqrt && VM_Version::has_fsqrt()) ||
- (kind==Interpreter::java_lang_math_abs));
-}
-
-address TemplateInterpreterGenerator::generate_math_entry(AbstractInterpreter::MethodKind kind) {
- if (!math_entry_available(kind)) {
- NOT_PRODUCT(__ should_not_reach_here();)
- return NULL;
- }
-
- address entry = __ pc();
-
- __ lfd(F1_RET, Interpreter::stackElementSize, R15_esp);
-
- // Pop c2i arguments (if any) off when we return.
-#ifdef ASSERT
- __ ld(R9_ARG7, 0, R1_SP);
- __ ld(R10_ARG8, 0, R21_sender_SP);
- __ cmpd(CCR0, R9_ARG7, R10_ARG8);
- __ asm_assert_eq("backlink", 0x545);
-#endif // ASSERT
- __ mr(R1_SP, R21_sender_SP); // Cut the stack back to where the caller started.
-
- if (kind == Interpreter::java_lang_math_sqrt) {
- __ fsqrt(F1_RET, F1_RET);
- } else if (kind == Interpreter::java_lang_math_abs) {
- __ fabs(F1_RET, F1_RET);
- } else {
- ShouldNotReachHere();
+int AbstractInterpreter::BasicType_as_index(BasicType type) {
+ int i = 0;
+ switch (type) {
+ case T_BOOLEAN: i = 0; break;
+ case T_CHAR : i = 1; break;
+ case T_BYTE : i = 2; break;
+ case T_SHORT : i = 3; break;
+ case T_INT : i = 4; break;
+ case T_LONG : i = 5; break;
+ case T_VOID : i = 6; break;
+ case T_FLOAT : i = 7; break;
+ case T_DOUBLE : i = 8; break;
+ case T_OBJECT : i = 9; break;
+ case T_ARRAY : i = 9; break;
+ default : ShouldNotReachHere();
}
-
- // And we're done.
- __ blr();
-
- __ flush();
-
- return entry;
-}
-
-// Interpreter stub for calling a native method. (asm interpreter)
-// This sets up a somewhat different looking stack for calling the
-// native method than the typical interpreter frame setup.
-//
-// On entry:
-// R19_method - method
-// R16_thread - JavaThread*
-// R15_esp - intptr_t* sender tos
-//
-// abstract stack (grows up)
-// [ IJava (caller of JNI callee) ] <-- ASP
-// ...
-address TemplateInterpreterGenerator::generate_native_entry(bool synchronized) {
-
- address entry = __ pc();
-
- const bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods;
-
- // -----------------------------------------------------------------------------
- // Allocate a new frame that represents the native callee (i2n frame).
- // This is not a full-blown interpreter frame, but in particular, the
- // following registers are valid after this:
- // - R19_method
- // - R18_local (points to start of argumuments to native function)
- //
- // abstract stack (grows up)
- // [ IJava (caller of JNI callee) ] <-- ASP
- // ...
-
- const Register signature_handler_fd = R11_scratch1;
- const Register pending_exception = R0;
- const Register result_handler_addr = R31;
- const Register native_method_fd = R11_scratch1;
- const Register access_flags = R22_tmp2;
- const Register active_handles = R11_scratch1; // R26_monitor saved to state.
- const Register sync_state = R12_scratch2;
- const Register sync_state_addr = sync_state; // Address is dead after use.
- const Register suspend_flags = R11_scratch1;
-
- //=============================================================================
- // Allocate new frame and initialize interpreter state.
-
- Label exception_return;
- Label exception_return_sync_check;
- Label stack_overflow_return;
-
- // Generate new interpreter state and jump to stack_overflow_return in case of
- // a stack overflow.
- //generate_compute_interpreter_state(stack_overflow_return);
-
- Register size_of_parameters = R22_tmp2;
-
- generate_fixed_frame(true, size_of_parameters, noreg /* unused */);
-
- //=============================================================================
- // Increment invocation counter. On overflow, entry to JNI method
- // will be compiled.
- Label invocation_counter_overflow, continue_after_compile;
- if (inc_counter) {
- if (synchronized) {
- // Since at this point in the method invocation the exception handler
- // would try to exit the monitor of synchronized methods which hasn't
- // been entered yet, we set the thread local variable
- // _do_not_unlock_if_synchronized to true. If any exception was thrown by
- // runtime, exception handling i.e. unlock_if_synchronized_method will
- // check this thread local flag.
- // This flag has two effects, one is to force an unwind in the topmost
- // interpreter frame and not perform an unlock while doing so.
- __ li(R0, 1);
- __ stb(R0, in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()), R16_thread);
- }
- generate_counter_incr(&invocation_counter_overflow, NULL, NULL);
-
- BIND(continue_after_compile);
- // Reset the _do_not_unlock_if_synchronized flag.
- if (synchronized) {
- __ li(R0, 0);
- __ stb(R0, in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()), R16_thread);
- }
- }
-
- // access_flags = method->access_flags();
- // Load access flags.
- assert(access_flags->is_nonvolatile(),
- "access_flags must be in a non-volatile register");
- // Type check.
- assert(4 == sizeof(AccessFlags), "unexpected field size");
- __ lwz(access_flags, method_(access_flags));
-
- // We don't want to reload R19_method and access_flags after calls
- // to some helper functions.
- assert(R19_method->is_nonvolatile(),
- "R19_method must be a non-volatile register");
-
- // Check for synchronized methods. Must happen AFTER invocation counter
- // check, so method is not locked if counter overflows.
-
- if (synchronized) {
- lock_method(access_flags, R11_scratch1, R12_scratch2, true);
-
- // Update monitor in state.
- __ ld(R11_scratch1, 0, R1_SP);
- __ std(R26_monitor, _ijava_state_neg(monitors), R11_scratch1);
- }
-
- // jvmti/jvmpi support
- __ notify_method_entry();
-
- //=============================================================================
- // Get and call the signature handler.
-
- __ ld(signature_handler_fd, method_(signature_handler));
- Label call_signature_handler;
-
- __ cmpdi(CCR0, signature_handler_fd, 0);
- __ bne(CCR0, call_signature_handler);
-
- // Method has never been called. Either generate a specialized
- // handler or point to the slow one.
- //
- // Pass parameter 'false' to avoid exception check in call_VM.
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), R19_method, false);
-
- // Check for an exception while looking up the target method. If we
- // incurred one, bail.
- __ ld(pending_exception, thread_(pending_exception));
- __ cmpdi(CCR0, pending_exception, 0);
- __ bne(CCR0, exception_return_sync_check); // Has pending exception.
-
- // Reload signature handler, it may have been created/assigned in the meanwhile.
- __ ld(signature_handler_fd, method_(signature_handler));
- __ twi_0(signature_handler_fd); // Order wrt. load of klass mirror and entry point (isync is below).
-
- BIND(call_signature_handler);
-
- // Before we call the signature handler we push a new frame to
- // protect the interpreter frame volatile registers when we return
- // from jni but before we can get back to Java.
-
- // First set the frame anchor while the SP/FP registers are
- // convenient and the slow signature handler can use this same frame
- // anchor.
-
- // We have a TOP_IJAVA_FRAME here, which belongs to us.
- __ set_top_ijava_frame_at_SP_as_last_Java_frame(R1_SP, R12_scratch2/*tmp*/);
-
- // Now the interpreter frame (and its call chain) have been
- // invalidated and flushed. We are now protected against eager
- // being enabled in native code. Even if it goes eager the
- // registers will be reloaded as clean and we will invalidate after
- // the call so no spurious flush should be possible.
-
- // Call signature handler and pass locals address.
- //
- // Our signature handlers copy required arguments to the C stack
- // (outgoing C args), R3_ARG1 to R10_ARG8, and FARG1 to FARG13.
- __ mr(R3_ARG1, R18_locals);
-#if !defined(ABI_ELFv2)
- __ ld(signature_handler_fd, 0, signature_handler_fd);
-#endif
-
- __ call_stub(signature_handler_fd);
-
- // Remove the register parameter varargs slots we allocated in
- // compute_interpreter_state. SP+16 ends up pointing to the ABI
- // outgoing argument area.
- //
- // Not needed on PPC64.
- //__ add(SP, SP, Argument::n_register_parameters*BytesPerWord);
-
- assert(result_handler_addr->is_nonvolatile(), "result_handler_addr must be in a non-volatile register");
- // Save across call to native method.
- __ mr(result_handler_addr, R3_RET);
-
- __ isync(); // Acquire signature handler before trying to fetch the native entry point and klass mirror.
-
- // Set up fixed parameters and call the native method.
- // If the method is static, get mirror into R4_ARG2.
- {
- Label method_is_not_static;
- // Access_flags is non-volatile and still, no need to restore it.
-
- // Restore access flags.
- __ testbitdi(CCR0, R0, access_flags, JVM_ACC_STATIC_BIT);
- __ bfalse(CCR0, method_is_not_static);
-
- // constants = method->constants();
- __ ld(R11_scratch1, in_bytes(Method::const_offset()), R19_method);
- __ ld(R11_scratch1, in_bytes(ConstMethod::constants_offset()), R11_scratch1);
- // pool_holder = method->constants()->pool_holder();
- __ ld(R11_scratch1/*pool_holder*/, ConstantPool::pool_holder_offset_in_bytes(),
- R11_scratch1/*constants*/);
-
- const int mirror_offset = in_bytes(Klass::java_mirror_offset());
-
- // mirror = pool_holder->klass_part()->java_mirror();
- __ ld(R0/*mirror*/, mirror_offset, R11_scratch1/*pool_holder*/);
- // state->_native_mirror = mirror;
-
- __ ld(R11_scratch1, 0, R1_SP);
- __ std(R0/*mirror*/, _ijava_state_neg(oop_tmp), R11_scratch1);
- // R4_ARG2 = &state->_oop_temp;
- __ addi(R4_ARG2, R11_scratch1, _ijava_state_neg(oop_tmp));
- BIND(method_is_not_static);
- }
-
- // At this point, arguments have been copied off the stack into
- // their JNI positions. Oops are boxed in-place on the stack, with
- // handles copied to arguments. The result handler address is in a
- // register.
-
- // Pass JNIEnv address as first parameter.
- __ addir(R3_ARG1, thread_(jni_environment));
-
- // Load the native_method entry before we change the thread state.
- __ ld(native_method_fd, method_(native_function));
-
- //=============================================================================
- // Transition from _thread_in_Java to _thread_in_native. As soon as
- // we make this change the safepoint code needs to be certain that
- // the last Java frame we established is good. The pc in that frame
- // just needs to be near here not an actual return address.
-
- // We use release_store_fence to update values like the thread state, where
- // we don't want the current thread to continue until all our prior memory
- // accesses (including the new thread state) are visible to other threads.
- __ li(R0, _thread_in_native);
- __ release();
-
- // TODO PPC port assert(4 == JavaThread::sz_thread_state(), "unexpected field size");
- __ stw(R0, thread_(thread_state));
-
- if (UseMembar) {
- __ fence();
- }
-
- //=============================================================================
- // Call the native method. Argument registers must not have been
- // overwritten since "__ call_stub(signature_handler);" (except for
- // ARG1 and ARG2 for static methods).
- __ call_c(native_method_fd);
-
- __ li(R0, 0);
- __ ld(R11_scratch1, 0, R1_SP);
- __ std(R3_RET, _ijava_state_neg(lresult), R11_scratch1);
- __ stfd(F1_RET, _ijava_state_neg(fresult), R11_scratch1);
- __ std(R0/*mirror*/, _ijava_state_neg(oop_tmp), R11_scratch1); // reset
-
- // Note: C++ interpreter needs the following here:
- // The frame_manager_lr field, which we use for setting the last
- // java frame, gets overwritten by the signature handler. Restore
- // it now.
- //__ get_PC_trash_LR(R11_scratch1);
- //__ std(R11_scratch1, _top_ijava_frame_abi(frame_manager_lr), R1_SP);
-
- // Because of GC R19_method may no longer be valid.
-
- // Block, if necessary, before resuming in _thread_in_Java state.
- // In order for GC to work, don't clear the last_Java_sp until after
- // blocking.
-
- //=============================================================================
- // Switch thread to "native transition" state before reading the
- // synchronization state. This additional state is necessary
- // because reading and testing the synchronization state is not
- // atomic w.r.t. GC, as this scenario demonstrates: Java thread A,
- // in _thread_in_native state, loads _not_synchronized and is
- // preempted. VM thread changes sync state to synchronizing and
- // suspends threads for GC. Thread A is resumed to finish this
- // native method, but doesn't block here since it didn't see any
- // synchronization in progress, and escapes.
-
- // We use release_store_fence to update values like the thread state, where
- // we don't want the current thread to continue until all our prior memory
- // accesses (including the new thread state) are visible to other threads.
- __ li(R0/*thread_state*/, _thread_in_native_trans);
- __ release();
- __ stw(R0/*thread_state*/, thread_(thread_state));
- if (UseMembar) {
- __ fence();
- }
- // Write serialization page so that the VM thread can do a pseudo remote
- // membar. We use the current thread pointer to calculate a thread
- // specific offset to write to within the page. This minimizes bus
- // traffic due to cache line collision.
- else {
- __ serialize_memory(R16_thread, R11_scratch1, R12_scratch2);
- }
-
- // Now before we return to java we must look for a current safepoint
- // (a new safepoint can not start since we entered native_trans).
- // We must check here because a current safepoint could be modifying
- // the callers registers right this moment.
-
- // Acquire isn't strictly necessary here because of the fence, but
- // sync_state is declared to be volatile, so we do it anyway
- // (cmp-br-isync on one path, release (same as acquire on PPC64) on the other path).
- int sync_state_offs = __ load_const_optimized(sync_state_addr, SafepointSynchronize::address_of_state(), /*temp*/R0, true);
-
- // TODO PPC port assert(4 == SafepointSynchronize::sz_state(), "unexpected field size");
- __ lwz(sync_state, sync_state_offs, sync_state_addr);
-
- // TODO PPC port assert(4 == Thread::sz_suspend_flags(), "unexpected field size");
- __ lwz(suspend_flags, thread_(suspend_flags));
-
- Label sync_check_done;
- Label do_safepoint;
- // No synchronization in progress nor yet synchronized.
- __ cmpwi(CCR0, sync_state, SafepointSynchronize::_not_synchronized);
- // Not suspended.
- __ cmpwi(CCR1, suspend_flags, 0);
-
- __ bne(CCR0, do_safepoint);
- __ beq(CCR1, sync_check_done);
- __ bind(do_safepoint);
- __ isync();
- // Block. We do the call directly and leave the current
- // last_Java_frame setup undisturbed. We must save any possible
- // native result across the call. No oop is present.
-
- __ mr(R3_ARG1, R16_thread);
-#if defined(ABI_ELFv2)
- __ call_c(CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans),
- relocInfo::none);
-#else
- __ call_c(CAST_FROM_FN_PTR(FunctionDescriptor*, JavaThread::check_special_condition_for_native_trans),
- relocInfo::none);
-#endif
-
- __ bind(sync_check_done);
-
- //=============================================================================
- // <<<<<< Back in Interpreter Frame >>>>>
-
- // We are in thread_in_native_trans here and back in the normal
- // interpreter frame. We don't have to do anything special about
- // safepoints and we can switch to Java mode anytime we are ready.
-
- // Note: frame::interpreter_frame_result has a dependency on how the
- // method result is saved across the call to post_method_exit. For
- // native methods it assumes that the non-FPU/non-void result is
- // saved in _native_lresult and a FPU result in _native_fresult. If
- // this changes then the interpreter_frame_result implementation
- // will need to be updated too.
-
- // On PPC64, we have stored the result directly after the native call.
-
- //=============================================================================
- // Back in Java
-
- // We use release_store_fence to update values like the thread state, where
- // we don't want the current thread to continue until all our prior memory
- // accesses (including the new thread state) are visible to other threads.
- __ li(R0/*thread_state*/, _thread_in_Java);
- __ release();
- __ stw(R0/*thread_state*/, thread_(thread_state));
- if (UseMembar) {
- __ fence();
- }
-
- __ reset_last_Java_frame();
-
- // Jvmdi/jvmpi support. Whether we've got an exception pending or
- // not, and whether unlocking throws an exception or not, we notify
- // on native method exit. If we do have an exception, we'll end up
- // in the caller's context to handle it, so if we don't do the
- // notify here, we'll drop it on the floor.
- __ notify_method_exit(true/*native method*/,
- ilgl /*illegal state (not used for native methods)*/,
- InterpreterMacroAssembler::NotifyJVMTI,
- false /*check_exceptions*/);
-
- //=============================================================================
- // Handle exceptions
-
- if (synchronized) {
- // Don't check for exceptions since we're still in the i2n frame. Do that
- // manually afterwards.
- unlock_method(false);
- }
-
- // Reset active handles after returning from native.
- // thread->active_handles()->clear();
- __ ld(active_handles, thread_(active_handles));
- // TODO PPC port assert(4 == JNIHandleBlock::top_size_in_bytes(), "unexpected field size");
- __ li(R0, 0);
- __ stw(R0, JNIHandleBlock::top_offset_in_bytes(), active_handles);
-
- Label exception_return_sync_check_already_unlocked;
- __ ld(R0/*pending_exception*/, thread_(pending_exception));
- __ cmpdi(CCR0, R0/*pending_exception*/, 0);
- __ bne(CCR0, exception_return_sync_check_already_unlocked);
-
- //-----------------------------------------------------------------------------
- // No exception pending.
-
- // Move native method result back into proper registers and return.
- // Invoke result handler (may unbox/promote).
- __ ld(R11_scratch1, 0, R1_SP);
- __ ld(R3_RET, _ijava_state_neg(lresult), R11_scratch1);
- __ lfd(F1_RET, _ijava_state_neg(fresult), R11_scratch1);
- __ call_stub(result_handler_addr);
-
- __ merge_frames(/*top_frame_sp*/ R21_sender_SP, /*return_pc*/ R0, R11_scratch1, R12_scratch2);
-
- // Must use the return pc which was loaded from the caller's frame
- // as the VM uses return-pc-patching for deoptimization.
- __ mtlr(R0);
- __ blr();
-
- //-----------------------------------------------------------------------------
- // An exception is pending. We call into the runtime only if the
- // caller was not interpreted. If it was interpreted the
- // interpreter will do the correct thing. If it isn't interpreted
- // (call stub/compiled code) we will change our return and continue.
-
- BIND(exception_return_sync_check);
-
- if (synchronized) {
- // Don't check for exceptions since we're still in the i2n frame. Do that
- // manually afterwards.
- unlock_method(false);
- }
- BIND(exception_return_sync_check_already_unlocked);
-
- const Register return_pc = R31;
-
- __ ld(return_pc, 0, R1_SP);
- __ ld(return_pc, _abi(lr), return_pc);
-
- // Get the address of the exception handler.
- __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address),
- R16_thread,
- return_pc /* return pc */);
- __ merge_frames(/*top_frame_sp*/ R21_sender_SP, noreg, R11_scratch1, R12_scratch2);
-
- // Load the PC of the the exception handler into LR.
- __ mtlr(R3_RET);
-
- // Load exception into R3_ARG1 and clear pending exception in thread.
- __ ld(R3_ARG1/*exception*/, thread_(pending_exception));
- __ li(R4_ARG2, 0);
- __ std(R4_ARG2, thread_(pending_exception));
-
- // Load the original return pc into R4_ARG2.
- __ mr(R4_ARG2/*issuing_pc*/, return_pc);
-
- // Return to exception handler.
- __ blr();
-
- //=============================================================================
- // Counter overflow.
-
- if (inc_counter) {
- // Handle invocation counter overflow.
- __ bind(invocation_counter_overflow);
-
- generate_counter_overflow(continue_after_compile);
- }
-
- return entry;
-}
-
-// Generic interpreted method entry to (asm) interpreter.
-//
-address TemplateInterpreterGenerator::generate_normal_entry(bool synchronized) {
- bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods;
- address entry = __ pc();
- // Generate the code to allocate the interpreter stack frame.
- Register Rsize_of_parameters = R4_ARG2, // Written by generate_fixed_frame.
- Rsize_of_locals = R5_ARG3; // Written by generate_fixed_frame.
-
- generate_fixed_frame(false, Rsize_of_parameters, Rsize_of_locals);
-
- // --------------------------------------------------------------------------
- // Zero out non-parameter locals.
- // Note: *Always* zero out non-parameter locals as Sparc does. It's not
- // worth to ask the flag, just do it.
- Register Rslot_addr = R6_ARG4,
- Rnum = R7_ARG5;
- Label Lno_locals, Lzero_loop;
-
- // Set up the zeroing loop.
- __ subf(Rnum, Rsize_of_parameters, Rsize_of_locals);
- __ subf(Rslot_addr, Rsize_of_parameters, R18_locals);
- __ srdi_(Rnum, Rnum, Interpreter::logStackElementSize);
- __ beq(CCR0, Lno_locals);
- __ li(R0, 0);
- __ mtctr(Rnum);
-
- // The zero locals loop.
- __ bind(Lzero_loop);
- __ std(R0, 0, Rslot_addr);
- __ addi(Rslot_addr, Rslot_addr, -Interpreter::stackElementSize);
- __ bdnz(Lzero_loop);
-
- __ bind(Lno_locals);
-
- // --------------------------------------------------------------------------
- // Counter increment and overflow check.
- Label invocation_counter_overflow,
- profile_method,
- profile_method_continue;
- if (inc_counter || ProfileInterpreter) {
-
- Register Rdo_not_unlock_if_synchronized_addr = R11_scratch1;
- if (synchronized) {
- // Since at this point in the method invocation the exception handler
- // would try to exit the monitor of synchronized methods which hasn't
- // been entered yet, we set the thread local variable
- // _do_not_unlock_if_synchronized to true. If any exception was thrown by
- // runtime, exception handling i.e. unlock_if_synchronized_method will
- // check this thread local flag.
- // This flag has two effects, one is to force an unwind in the topmost
- // interpreter frame and not perform an unlock while doing so.
- __ li(R0, 1);
- __ stb(R0, in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()), R16_thread);
- }
-
- // Argument and return type profiling.
- __ profile_parameters_type(R3_ARG1, R4_ARG2, R5_ARG3, R6_ARG4);
-
- // Increment invocation counter and check for overflow.
- if (inc_counter) {
- generate_counter_incr(&invocation_counter_overflow, &profile_method, &profile_method_continue);
- }
-
- __ bind(profile_method_continue);
-
- // Reset the _do_not_unlock_if_synchronized flag.
- if (synchronized) {
- __ li(R0, 0);
- __ stb(R0, in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()), R16_thread);
- }
- }
-
- // --------------------------------------------------------------------------
- // Locking of synchronized methods. Must happen AFTER invocation_counter
- // check and stack overflow check, so method is not locked if overflows.
- if (synchronized) {
- lock_method(R3_ARG1, R4_ARG2, R5_ARG3);
- }
-#ifdef ASSERT
- else {
- Label Lok;
- __ lwz(R0, in_bytes(Method::access_flags_offset()), R19_method);
- __ andi_(R0, R0, JVM_ACC_SYNCHRONIZED);
- __ asm_assert_eq("method needs synchronization", 0x8521);
- __ bind(Lok);
- }
-#endif // ASSERT
-
- __ verify_thread();
-
- // --------------------------------------------------------------------------
- // JVMTI support
- __ notify_method_entry();
-
- // --------------------------------------------------------------------------
- // Start executing instructions.
- __ dispatch_next(vtos);
-
- // --------------------------------------------------------------------------
- // Out of line counter overflow and MDO creation code.
- if (ProfileInterpreter) {
- // We have decided to profile this method in the interpreter.
- __ bind(profile_method);
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method));
- __ set_method_data_pointer_for_bcp();
- __ b(profile_method_continue);
- }
-
- if (inc_counter) {
- // Handle invocation counter overflow.
- __ bind(invocation_counter_overflow);
- generate_counter_overflow(profile_method_continue);
- }
- return entry;
-}
-
-// CRC32 Intrinsics.
-//
-// Contract on scratch and work registers.
-// =======================================
-//
-// On ppc, the register set {R2..R12} is available in the interpreter as scratch/work registers.
-// You should, however, keep in mind that {R3_ARG1..R10_ARG8} is the C-ABI argument register set.
-// You can't rely on these registers across calls.
-//
-// The generators for CRC32_update and for CRC32_updateBytes use the
-// scratch/work register set internally, passing the work registers
-// as arguments to the MacroAssembler emitters as required.
-//
-// R3_ARG1..R6_ARG4 are preset to hold the incoming java arguments.
-// Their contents is not constant but may change according to the requirements
-// of the emitted code.
-//
-// All other registers from the scratch/work register set are used "internally"
-// and contain garbage (i.e. unpredictable values) once blr() is reached.
-// Basically, only R3_RET contains a defined value which is the function result.
-//
-/**
- * Method entry for static native methods:
- * int java.util.zip.CRC32.update(int crc, int b)
- */
-address InterpreterGenerator::generate_CRC32_update_entry() {
- if (UseCRC32Intrinsics) {
- address start = __ pc(); // Remember stub start address (is rtn value).
- Label slow_path;
-
- // Safepoint check
- const Register sync_state = R11_scratch1;
- int sync_state_offs = __ load_const_optimized(sync_state, SafepointSynchronize::address_of_state(), /*temp*/R0, true);
- __ lwz(sync_state, sync_state_offs, sync_state);
- __ cmpwi(CCR0, sync_state, SafepointSynchronize::_not_synchronized);
- __ bne(CCR0, slow_path);
-
- // We don't generate local frame and don't align stack because
- // we not even call stub code (we generate the code inline)
- // and there is no safepoint on this path.
-
- // Load java parameters.
- // R15_esp is callers operand stack pointer, i.e. it points to the parameters.
- const Register argP = R15_esp;
- const Register crc = R3_ARG1; // crc value
- const Register data = R4_ARG2; // address of java byte value (kernel_crc32 needs address)
- const Register dataLen = R5_ARG3; // source data len (1 byte). Not used because calling the single-byte emitter.
- const Register table = R6_ARG4; // address of crc32 table
- const Register tmp = dataLen; // Reuse unused len register to show we don't actually need a separate tmp here.
-
- BLOCK_COMMENT("CRC32_update {");
-
- // Arguments are reversed on java expression stack
-#ifdef VM_LITTLE_ENDIAN
- __ addi(data, argP, 0+1*wordSize); // (stack) address of byte value. Emitter expects address, not value.
- // Being passed as an int, the single byte is at offset +0.
-#else
- __ addi(data, argP, 3+1*wordSize); // (stack) address of byte value. Emitter expects address, not value.
- // Being passed from java as an int, the single byte is at offset +3.
-#endif
- __ lwz(crc, 2*wordSize, argP); // Current crc state, zero extend to 64 bit to have a clean register.
-
- StubRoutines::ppc64::generate_load_crc_table_addr(_masm, table);
- __ kernel_crc32_singleByte(crc, data, dataLen, table, tmp);
-
- // Restore caller sp for c2i case and return.
- __ mr(R1_SP, R21_sender_SP); // Cut the stack back to where the caller started.
- __ blr();
-
- // Generate a vanilla native entry as the slow path.
- BLOCK_COMMENT("} CRC32_update");
- BIND(slow_path);
- __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::native), R11_scratch1);
- return start;
- }
-
- return NULL;
-}
-
-// CRC32 Intrinsics.
-/**
- * Method entry for static native methods:
- * int java.util.zip.CRC32.updateBytes( int crc, byte[] b, int off, int len)
- * int java.util.zip.CRC32.updateByteBuffer(int crc, long* buf, int off, int len)
- */
-address InterpreterGenerator::generate_CRC32_updateBytes_entry(AbstractInterpreter::MethodKind kind) {
- if (UseCRC32Intrinsics) {
- address start = __ pc(); // Remember stub start address (is rtn value).
- Label slow_path;
-
- // Safepoint check
- const Register sync_state = R11_scratch1;
- int sync_state_offs = __ load_const_optimized(sync_state, SafepointSynchronize::address_of_state(), /*temp*/R0, true);
- __ lwz(sync_state, sync_state_offs, sync_state);
- __ cmpwi(CCR0, sync_state, SafepointSynchronize::_not_synchronized);
- __ bne(CCR0, slow_path);
-
- // We don't generate local frame and don't align stack because
- // we not even call stub code (we generate the code inline)
- // and there is no safepoint on this path.
-
- // Load parameters.
- // Z_esp is callers operand stack pointer, i.e. it points to the parameters.
- const Register argP = R15_esp;
- const Register crc = R3_ARG1; // crc value
- const Register data = R4_ARG2; // address of java byte array
- const Register dataLen = R5_ARG3; // source data len
- const Register table = R6_ARG4; // address of crc32 table
-
- const Register t0 = R9; // scratch registers for crc calculation
- const Register t1 = R10;
- const Register t2 = R11;
- const Register t3 = R12;
-
- const Register tc0 = R2; // registers to hold pre-calculated column addresses
- const Register tc1 = R7;
- const Register tc2 = R8;
- const Register tc3 = table; // table address is reconstructed at the end of kernel_crc32_* emitters
-
- const Register tmp = t0; // Only used very locally to calculate byte buffer address.
-
- // Arguments are reversed on java expression stack.
- // Calculate address of start element.
- if (kind == Interpreter::java_util_zip_CRC32_updateByteBuffer) { // Used for "updateByteBuffer direct".
- BLOCK_COMMENT("CRC32_updateByteBuffer {");
- // crc @ (SP + 5W) (32bit)
- // buf @ (SP + 3W) (64bit ptr to long array)
- // off @ (SP + 2W) (32bit)
- // dataLen @ (SP + 1W) (32bit)
- // data = buf + off
- __ ld( data, 3*wordSize, argP); // start of byte buffer
- __ lwa( tmp, 2*wordSize, argP); // byte buffer offset
- __ lwa( dataLen, 1*wordSize, argP); // #bytes to process
- __ lwz( crc, 5*wordSize, argP); // current crc state
- __ add( data, data, tmp); // Add byte buffer offset.
- } else { // Used for "updateBytes update".
- BLOCK_COMMENT("CRC32_updateBytes {");
- // crc @ (SP + 4W) (32bit)
- // buf @ (SP + 3W) (64bit ptr to byte array)
- // off @ (SP + 2W) (32bit)
- // dataLen @ (SP + 1W) (32bit)
- // data = buf + off + base_offset
- __ ld( data, 3*wordSize, argP); // start of byte buffer
- __ lwa( tmp, 2*wordSize, argP); // byte buffer offset
- __ lwa( dataLen, 1*wordSize, argP); // #bytes to process
- __ add( data, data, tmp); // add byte buffer offset
- __ lwz( crc, 4*wordSize, argP); // current crc state
- __ addi(data, data, arrayOopDesc::base_offset_in_bytes(T_BYTE));
- }
-
- StubRoutines::ppc64::generate_load_crc_table_addr(_masm, table);
-
- // Performance measurements show the 1word and 2word variants to be almost equivalent,
- // with very light advantages for the 1word variant. We chose the 1word variant for
- // code compactness.
- __ kernel_crc32_1word(crc, data, dataLen, table, t0, t1, t2, t3, tc0, tc1, tc2, tc3);
-
- // Restore caller sp for c2i case and return.
- __ mr(R1_SP, R21_sender_SP); // Cut the stack back to where the caller started.
- __ blr();
-
- // Generate a vanilla native entry as the slow path.
- BLOCK_COMMENT("} CRC32_updateBytes(Buffer)");
- BIND(slow_path);
- __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::native), R11_scratch1);
- return start;
- }
-
- return NULL;
+ assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, "index out of bounds");
+ return i;
}
// These should never be compiled since the interpreter will prefer
// the compiled version to the intrinsic version.
bool AbstractInterpreter::can_be_compiled(methodHandle m) {
- return !math_entry_available(method_kind(m));
+ return !TemplateInterpreter::math_entry_available(method_kind(m));
}
// How much stack a method activation needs in stack slots.
@@ -1505,411 +154,14 @@
}
}
-// =============================================================================
-// Exceptions
-
-void TemplateInterpreterGenerator::generate_throw_exception() {
- Register Rexception = R17_tos,
- Rcontinuation = R3_RET;
-
- // --------------------------------------------------------------------------
- // Entry point if an method returns with a pending exception (rethrow).
- Interpreter::_rethrow_exception_entry = __ pc();
- {
- __ restore_interpreter_state(R11_scratch1); // Sets R11_scratch1 = fp.
- __ ld(R12_scratch2, _ijava_state_neg(top_frame_sp), R11_scratch1);
- __ resize_frame_absolute(R12_scratch2, R11_scratch1, R0);
-
- // Compiled code destroys templateTableBase, reload.
- __ load_const_optimized(R25_templateTableBase, (address)Interpreter::dispatch_table((TosState)0), R11_scratch1);
- }
-
- // Entry point if a interpreted method throws an exception (throw).
- Interpreter::_throw_exception_entry = __ pc();
- {
- __ mr(Rexception, R3_RET);
-
- __ verify_thread();
- __ verify_oop(Rexception);
-
- // Expression stack must be empty before entering the VM in case of an exception.
- __ empty_expression_stack();
- // Find exception handler address and preserve exception oop.
- // Call C routine to find handler and jump to it.
- __ call_VM(Rexception, CAST_FROM_FN_PTR(address, InterpreterRuntime::exception_handler_for_exception), Rexception);
- __ mtctr(Rcontinuation);
- // Push exception for exception handler bytecodes.
- __ push_ptr(Rexception);
-
- // Jump to exception handler (may be remove activation entry!).
- __ bctr();
- }
-
- // If the exception is not handled in the current frame the frame is
- // removed and the exception is rethrown (i.e. exception
- // continuation is _rethrow_exception).
- //
- // Note: At this point the bci is still the bxi for the instruction
- // which caused the exception and the expression stack is
- // empty. Thus, for any VM calls at this point, GC will find a legal
- // oop map (with empty expression stack).
-
- // In current activation
- // tos: exception
- // bcp: exception bcp
-
- // --------------------------------------------------------------------------
- // JVMTI PopFrame support
-
- Interpreter::_remove_activation_preserving_args_entry = __ pc();
- {
- // Set the popframe_processing bit in popframe_condition indicating that we are
- // currently handling popframe, so that call_VMs that may happen later do not
- // trigger new popframe handling cycles.
- __ lwz(R11_scratch1, in_bytes(JavaThread::popframe_condition_offset()), R16_thread);
- __ ori(R11_scratch1, R11_scratch1, JavaThread::popframe_processing_bit);
- __ stw(R11_scratch1, in_bytes(JavaThread::popframe_condition_offset()), R16_thread);
-
- // Empty the expression stack, as in normal exception handling.
- __ empty_expression_stack();
- __ unlock_if_synchronized_method(vtos, /* throw_monitor_exception */ false, /* install_monitor_exception */ false);
-
- // Check to see whether we are returning to a deoptimized frame.
- // (The PopFrame call ensures that the caller of the popped frame is
- // either interpreted or compiled and deoptimizes it if compiled.)
- // Note that we don't compare the return PC against the
- // deoptimization blob's unpack entry because of the presence of
- // adapter frames in C2.
- Label Lcaller_not_deoptimized;
- Register return_pc = R3_ARG1;
- __ ld(return_pc, 0, R1_SP);
- __ ld(return_pc, _abi(lr), return_pc);
- __ call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::interpreter_contains), return_pc);
- __ cmpdi(CCR0, R3_RET, 0);
- __ bne(CCR0, Lcaller_not_deoptimized);
+// Support abs and sqrt like in compiler.
+// For others we can use a normal (native) entry.
- // The deoptimized case.
- // In this case, we can't call dispatch_next() after the frame is
- // popped, but instead must save the incoming arguments and restore
- // them after deoptimization has occurred.
- __ ld(R4_ARG2, in_bytes(Method::const_offset()), R19_method);
- __ lhz(R4_ARG2 /* number of params */, in_bytes(ConstMethod::size_of_parameters_offset()), R4_ARG2);
- __ slwi(R4_ARG2, R4_ARG2, Interpreter::logStackElementSize);
- __ addi(R5_ARG3, R18_locals, Interpreter::stackElementSize);
- __ subf(R5_ARG3, R4_ARG2, R5_ARG3);
- // Save these arguments.
- __ call_VM_leaf(CAST_FROM_FN_PTR(address, Deoptimization::popframe_preserve_args), R16_thread, R4_ARG2, R5_ARG3);
-
- // Inform deoptimization that it is responsible for restoring these arguments.
- __ load_const_optimized(R11_scratch1, JavaThread::popframe_force_deopt_reexecution_bit);
- __ stw(R11_scratch1, in_bytes(JavaThread::popframe_condition_offset()), R16_thread);
-
- // Return from the current method into the deoptimization blob. Will eventually
- // end up in the deopt interpeter entry, deoptimization prepared everything that
- // we will reexecute the call that called us.
- __ merge_frames(/*top_frame_sp*/ R21_sender_SP, /*reload return_pc*/ return_pc, R11_scratch1, R12_scratch2);
- __ mtlr(return_pc);
- __ blr();
-
- // The non-deoptimized case.
- __ bind(Lcaller_not_deoptimized);
-
- // Clear the popframe condition flag.
- __ li(R0, 0);
- __ stw(R0, in_bytes(JavaThread::popframe_condition_offset()), R16_thread);
-
- // Get out of the current method and re-execute the call that called us.
- __ merge_frames(/*top_frame_sp*/ R21_sender_SP, /*return_pc*/ noreg, R11_scratch1, R12_scratch2);
- __ restore_interpreter_state(R11_scratch1);
- __ ld(R12_scratch2, _ijava_state_neg(top_frame_sp), R11_scratch1);
- __ resize_frame_absolute(R12_scratch2, R11_scratch1, R0);
- if (ProfileInterpreter) {
- __ set_method_data_pointer_for_bcp();
- __ ld(R11_scratch1, 0, R1_SP);
- __ std(R28_mdx, _ijava_state_neg(mdx), R11_scratch1);
- }
-#if INCLUDE_JVMTI
- Label L_done;
-
- __ lbz(R11_scratch1, 0, R14_bcp);
- __ cmpwi(CCR0, R11_scratch1, Bytecodes::_invokestatic);
- __ bne(CCR0, L_done);
+bool TemplateInterpreter::math_entry_available(AbstractInterpreter::MethodKind kind) {
+ if (!InlineIntrinsics) return false;
- // The member name argument must be restored if _invokestatic is re-executed after a PopFrame call.
- // Detect such a case in the InterpreterRuntime function and return the member name argument, or NULL.
- __ ld(R4_ARG2, 0, R18_locals);
- __ MacroAssembler::call_VM(R4_ARG2, CAST_FROM_FN_PTR(address, InterpreterRuntime::member_name_arg_or_null), R4_ARG2, R19_method, R14_bcp, false);
- __ restore_interpreter_state(R11_scratch1, /*bcp_and_mdx_only*/ true);
- __ cmpdi(CCR0, R4_ARG2, 0);
- __ beq(CCR0, L_done);
- __ std(R4_ARG2, wordSize, R15_esp);
- __ bind(L_done);
-#endif // INCLUDE_JVMTI
- __ dispatch_next(vtos);
- }
- // end of JVMTI PopFrame support
-
- // --------------------------------------------------------------------------
- // Remove activation exception entry.
- // This is jumped to if an interpreted method can't handle an exception itself
- // (we come from the throw/rethrow exception entry above). We're going to call
- // into the VM to find the exception handler in the caller, pop the current
- // frame and return the handler we calculated.
- Interpreter::_remove_activation_entry = __ pc();
- {
- __ pop_ptr(Rexception);
- __ verify_thread();
- __ verify_oop(Rexception);
- __ std(Rexception, in_bytes(JavaThread::vm_result_offset()), R16_thread);
-
- __ unlock_if_synchronized_method(vtos, /* throw_monitor_exception */ false, true);
- __ notify_method_exit(false, vtos, InterpreterMacroAssembler::SkipNotifyJVMTI, false);
-
- __ get_vm_result(Rexception);
-
- // We are done with this activation frame; find out where to go next.
- // The continuation point will be an exception handler, which expects
- // the following registers set up:
- //
- // RET: exception oop
- // ARG2: Issuing PC (see generate_exception_blob()), only used if the caller is compiled.
-
- Register return_pc = R31; // Needs to survive the runtime call.
- __ ld(return_pc, 0, R1_SP);
- __ ld(return_pc, _abi(lr), return_pc);
- __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), R16_thread, return_pc);
-
- // Remove the current activation.
- __ merge_frames(/*top_frame_sp*/ R21_sender_SP, /*return_pc*/ noreg, R11_scratch1, R12_scratch2);
-
- __ mr(R4_ARG2, return_pc);
- __ mtlr(R3_RET);
- __ mr(R3_RET, Rexception);
- __ blr();
- }
+ return ((kind==Interpreter::java_lang_math_sqrt && VM_Version::has_fsqrt()) ||
+ (kind==Interpreter::java_lang_math_abs));
}
-// JVMTI ForceEarlyReturn support.
-// Returns "in the middle" of a method with a "fake" return value.
-address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) {
- Register Rscratch1 = R11_scratch1,
- Rscratch2 = R12_scratch2;
-
- address entry = __ pc();
- __ empty_expression_stack();
-
- __ load_earlyret_value(state, Rscratch1);
-
- __ ld(Rscratch1, in_bytes(JavaThread::jvmti_thread_state_offset()), R16_thread);
- // Clear the earlyret state.
- __ li(R0, 0);
- __ stw(R0, in_bytes(JvmtiThreadState::earlyret_state_offset()), Rscratch1);
-
- __ remove_activation(state, false, false);
- // Copied from TemplateTable::_return.
- // Restoration of lr done by remove_activation.
- switch (state) {
- case ltos:
- case btos:
- case ctos:
- case stos:
- case atos:
- case itos: __ mr(R3_RET, R17_tos); break;
- case ftos:
- case dtos: __ fmr(F1_RET, F15_ftos); break;
- case vtos: // This might be a constructor. Final fields (and volatile fields on PPC64) need
- // to get visible before the reference to the object gets stored anywhere.
- __ membar(Assembler::StoreStore); break;
- default : ShouldNotReachHere();
- }
- __ blr();
-
- return entry;
-} // end of ForceEarlyReturn support
-
-//-----------------------------------------------------------------------------
-// Helper for vtos entry point generation
-
-void TemplateInterpreterGenerator::set_vtos_entry_points(Template* t,
- address& bep,
- address& cep,
- address& sep,
- address& aep,
- address& iep,
- address& lep,
- address& fep,
- address& dep,
- address& vep) {
- assert(t->is_valid() && t->tos_in() == vtos, "illegal template");
- Label L;
-
- aep = __ pc(); __ push_ptr(); __ b(L);
- fep = __ pc(); __ push_f(); __ b(L);
- dep = __ pc(); __ push_d(); __ b(L);
- lep = __ pc(); __ push_l(); __ b(L);
- __ align(32, 12, 24); // align L
- bep = cep = sep =
- iep = __ pc(); __ push_i();
- vep = __ pc();
- __ bind(L);
- generate_and_dispatch(t);
-}
-
-//-----------------------------------------------------------------------------
-// Generation of individual instructions
-
-// helpers for generate_and_dispatch
-
-InterpreterGenerator::InterpreterGenerator(StubQueue* code)
- : TemplateInterpreterGenerator(code) {
- generate_all(); // Down here so it can be "virtual".
-}
-
-//-----------------------------------------------------------------------------
-
-// Non-product code
-#ifndef PRODUCT
-address TemplateInterpreterGenerator::generate_trace_code(TosState state) {
- //__ flush_bundle();
- address entry = __ pc();
-
- const char *bname = NULL;
- uint tsize = 0;
- switch(state) {
- case ftos:
- bname = "trace_code_ftos {";
- tsize = 2;
- break;
- case btos:
- bname = "trace_code_btos {";
- tsize = 2;
- break;
- case ctos:
- bname = "trace_code_ctos {";
- tsize = 2;
- break;
- case stos:
- bname = "trace_code_stos {";
- tsize = 2;
- break;
- case itos:
- bname = "trace_code_itos {";
- tsize = 2;
- break;
- case ltos:
- bname = "trace_code_ltos {";
- tsize = 3;
- break;
- case atos:
- bname = "trace_code_atos {";
- tsize = 2;
- break;
- case vtos:
- // Note: In case of vtos, the topmost of stack value could be a int or doubl
- // In case of a double (2 slots) we won't see the 2nd stack value.
- // Maybe we simply should print the topmost 3 stack slots to cope with the problem.
- bname = "trace_code_vtos {";
- tsize = 2;
-
- break;
- case dtos:
- bname = "trace_code_dtos {";
- tsize = 3;
- break;
- default:
- ShouldNotReachHere();
- }
- BLOCK_COMMENT(bname);
-
- // Support short-cut for TraceBytecodesAt.
- // Don't call into the VM if we don't want to trace to speed up things.
- Label Lskip_vm_call;
- if (TraceBytecodesAt > 0 && TraceBytecodesAt < max_intx) {
- int offs1 = __ load_const_optimized(R11_scratch1, (address) &TraceBytecodesAt, R0, true);
- int offs2 = __ load_const_optimized(R12_scratch2, (address) &BytecodeCounter::_counter_value, R0, true);
- __ ld(R11_scratch1, offs1, R11_scratch1);
- __ lwa(R12_scratch2, offs2, R12_scratch2);
- __ cmpd(CCR0, R12_scratch2, R11_scratch1);
- __ blt(CCR0, Lskip_vm_call);
- }
-
- __ push(state);
- // Load 2 topmost expression stack values.
- __ ld(R6_ARG4, tsize*Interpreter::stackElementSize, R15_esp);
- __ ld(R5_ARG3, Interpreter::stackElementSize, R15_esp);
- __ mflr(R31);
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), /* unused */ R4_ARG2, R5_ARG3, R6_ARG4, false);
- __ mtlr(R31);
- __ pop(state);
-
- if (TraceBytecodesAt > 0 && TraceBytecodesAt < max_intx) {
- __ bind(Lskip_vm_call);
- }
- __ blr();
- BLOCK_COMMENT("} trace_code");
- return entry;
-}
-
-void TemplateInterpreterGenerator::count_bytecode() {
- int offs = __ load_const_optimized(R11_scratch1, (address) &BytecodeCounter::_counter_value, R12_scratch2, true);
- __ lwz(R12_scratch2, offs, R11_scratch1);
- __ addi(R12_scratch2, R12_scratch2, 1);
- __ stw(R12_scratch2, offs, R11_scratch1);
-}
-
-void TemplateInterpreterGenerator::histogram_bytecode(Template* t) {
- int offs = __ load_const_optimized(R11_scratch1, (address) &BytecodeHistogram::_counters[t->bytecode()], R12_scratch2, true);
- __ lwz(R12_scratch2, offs, R11_scratch1);
- __ addi(R12_scratch2, R12_scratch2, 1);
- __ stw(R12_scratch2, offs, R11_scratch1);
-}
-
-void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) {
- const Register addr = R11_scratch1,
- tmp = R12_scratch2;
- // Get index, shift out old bytecode, bring in new bytecode, and store it.
- // _index = (_index >> log2_number_of_codes) |
- // (bytecode << log2_number_of_codes);
- int offs1 = __ load_const_optimized(addr, (address)&BytecodePairHistogram::_index, tmp, true);
- __ lwz(tmp, offs1, addr);
- __ srwi(tmp, tmp, BytecodePairHistogram::log2_number_of_codes);
- __ ori(tmp, tmp, ((int) t->bytecode()) << BytecodePairHistogram::log2_number_of_codes);
- __ stw(tmp, offs1, addr);
-
- // Bump bucket contents.
- // _counters[_index] ++;
- int offs2 = __ load_const_optimized(addr, (address)&BytecodePairHistogram::_counters, R0, true);
- __ sldi(tmp, tmp, LogBytesPerInt);
- __ add(addr, tmp, addr);
- __ lwz(tmp, offs2, addr);
- __ addi(tmp, tmp, 1);
- __ stw(tmp, offs2, addr);
-}
-
-void TemplateInterpreterGenerator::trace_bytecode(Template* t) {
- // Call a little run-time stub to avoid blow-up for each bytecode.
- // The run-time runtime saves the right registers, depending on
- // the tosca in-state for the given template.
-
- assert(Interpreter::trace_code(t->tos_in()) != NULL,
- "entry must have been generated");
-
- // Note: we destroy LR here.
- __ bl(Interpreter::trace_code(t->tos_in()));
-}
-
-void TemplateInterpreterGenerator::stop_interpreter_at() {
- Label L;
- int offs1 = __ load_const_optimized(R11_scratch1, (address) &StopInterpreterAt, R0, true);
- int offs2 = __ load_const_optimized(R12_scratch2, (address) &BytecodeCounter::_counter_value, R0, true);
- __ ld(R11_scratch1, offs1, R11_scratch1);
- __ lwa(R12_scratch2, offs2, R12_scratch2);
- __ cmpd(CCR0, R12_scratch2, R11_scratch1);
- __ bne(CCR0, L);
- __ illtrap();
- __ bind(L);
-}
-
-#endif // !PRODUCT
-#endif // !CC_INTERP
--- a/hotspot/src/cpu/ppc/vm/templateInterpreter_ppc.hpp Sat Dec 05 15:17:29 2015 +0100
+++ b/hotspot/src/cpu/ppc/vm/templateInterpreter_ppc.hpp Sat Dec 05 17:14:02 2015 +0000
@@ -1,6 +1,6 @@
/*
* Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
- * Copyright 2013, 2015 SAP AG. All rights reserved.
+ * Copyright (c) 2013, 2015 SAP AG. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -28,14 +28,17 @@
protected:
- // Size of interpreter code. Increase if too small. Interpreter will
+ // Size of interpreter code. Increase if too small. Interpreter will
// fail with a guarantee ("not enough space for interpreter generation");
// if too small.
// Run with +PrintInterpreter to get the VM to print out the size.
// Max size with JVMTI
-
const static int InterpreterCodeSize = 230*K;
+ public:
+ // Support abs and sqrt like in compiler.
+ // For others we can use a normal (native) entry.
+ static bool math_entry_available(AbstractInterpreter::MethodKind kind);
#endif // CPU_PPC_VM_TEMPLATEINTERPRETER_PPC_HPP
--- a/hotspot/src/cpu/sparc/vm/interpreter_sparc.cpp Sat Dec 05 15:17:29 2015 +0100
+++ b/hotspot/src/cpu/sparc/vm/interpreter_sparc.cpp Sat Dec 05 17:14:02 2015 +0000
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -38,7 +38,6 @@
#include "prims/jvmtiThreadState.hpp"
#include "prims/methodHandles.hpp"
#include "runtime/arguments.hpp"
-#include "runtime/deoptimization.hpp"
#include "runtime/frame.inline.hpp"
#include "runtime/sharedRuntime.hpp"
#include "runtime/stubRoutines.hpp"
@@ -62,30 +61,6 @@
//----------------------------------------------------------------------------------------------------
-
-
-
-int AbstractInterpreter::BasicType_as_index(BasicType type) {
- int i = 0;
- switch (type) {
- case T_BOOLEAN: i = 0; break;
- case T_CHAR : i = 1; break;
- case T_BYTE : i = 2; break;
- case T_SHORT : i = 3; break;
- case T_INT : i = 4; break;
- case T_LONG : i = 5; break;
- case T_VOID : i = 6; break;
- case T_FLOAT : i = 7; break;
- case T_DOUBLE : i = 8; break;
- case T_OBJECT : i = 9; break;
- case T_ARRAY : i = 9; break;
- default : ShouldNotReachHere();
- }
- assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, "index out of bounds");
- return i;
-}
-
-
#ifndef _LP64
address AbstractInterpreterGenerator::generate_slow_signature_handler() {
address entry = __ pc();
@@ -254,28 +229,3 @@
return entry;
}
-
-bool AbstractInterpreter::can_be_compiled(methodHandle m) {
- // No special entry points that preclude compilation
- return true;
-}
-
-void Deoptimization::unwind_callee_save_values(frame* f, vframeArray* vframe_array) {
-
- // This code is sort of the equivalent of C2IAdapter::setup_stack_frame back in
- // the days we had adapter frames. When we deoptimize a situation where a
- // compiled caller calls a compiled caller will have registers it expects
- // to survive the call to the callee. If we deoptimize the callee the only
- // way we can restore these registers is to have the oldest interpreter
- // frame that we create restore these values. That is what this routine
- // will accomplish.
-
- // At the moment we have modified c2 to not have any callee save registers
- // so this problem does not exist and this routine is just a place holder.
-
- assert(f->is_interpreted_frame(), "must be interpreted");
-}
-
-
-//----------------------------------------------------------------------------------------------------
-// Exceptions
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/cpu/sparc/vm/templateInterpreterGenerator_sparc.cpp Sat Dec 05 17:14:02 2015 +0000
@@ -0,0 +1,1832 @@
+/*
+ * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "asm/macroAssembler.hpp"
+#include "interpreter/bytecodeHistogram.hpp"
+#include "interpreter/interpreter.hpp"
+#include "interpreter/interpreterGenerator.hpp"
+#include "interpreter/interpreterRuntime.hpp"
+#include "interpreter/interp_masm.hpp"
+#include "interpreter/templateTable.hpp"
+#include "oops/arrayOop.hpp"
+#include "oops/methodData.hpp"
+#include "oops/method.hpp"
+#include "oops/oop.inline.hpp"
+#include "prims/jvmtiExport.hpp"
+#include "prims/jvmtiThreadState.hpp"
+#include "runtime/arguments.hpp"
+#include "runtime/deoptimization.hpp"
+#include "runtime/frame.inline.hpp"
+#include "runtime/sharedRuntime.hpp"
+#include "runtime/stubRoutines.hpp"
+#include "runtime/synchronizer.hpp"
+#include "runtime/timer.hpp"
+#include "runtime/vframeArray.hpp"
+#include "utilities/debug.hpp"
+#include "utilities/macros.hpp"
+
+#ifndef CC_INTERP
+#ifndef FAST_DISPATCH
+#define FAST_DISPATCH 1
+#endif
+#undef FAST_DISPATCH
+
+
+// Generation of Interpreter
+//
+// The InterpreterGenerator generates the interpreter into Interpreter::_code.
+
+
+#define __ _masm->
+
+
+//----------------------------------------------------------------------------------------------------
+
+
+void InterpreterGenerator::save_native_result(void) {
+ // result potentially in O0/O1: save it across calls
+ const Address& l_tmp = InterpreterMacroAssembler::l_tmp;
+
+ // result potentially in F0/F1: save it across calls
+ const Address& d_tmp = InterpreterMacroAssembler::d_tmp;
+
+ // save and restore any potential method result value around the unlocking operation
+ __ stf(FloatRegisterImpl::D, F0, d_tmp);
+#ifdef _LP64
+ __ stx(O0, l_tmp);
+#else
+ __ std(O0, l_tmp);
+#endif
+}
+
+void InterpreterGenerator::restore_native_result(void) {
+ const Address& l_tmp = InterpreterMacroAssembler::l_tmp;
+ const Address& d_tmp = InterpreterMacroAssembler::d_tmp;
+
+ // Restore any method result value
+ __ ldf(FloatRegisterImpl::D, d_tmp, F0);
+#ifdef _LP64
+ __ ldx(l_tmp, O0);
+#else
+ __ ldd(l_tmp, O0);
+#endif
+}
+
+address TemplateInterpreterGenerator::generate_exception_handler_common(const char* name, const char* message, bool pass_oop) {
+ assert(!pass_oop || message == NULL, "either oop or message but not both");
+ address entry = __ pc();
+ // expression stack must be empty before entering the VM if an exception happened
+ __ empty_expression_stack();
+ // load exception object
+ __ set((intptr_t)name, G3_scratch);
+ if (pass_oop) {
+ __ call_VM(Oexception, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_klass_exception), G3_scratch, Otos_i);
+ } else {
+ __ set((intptr_t)message, G4_scratch);
+ __ call_VM(Oexception, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), G3_scratch, G4_scratch);
+ }
+ // throw exception
+ assert(Interpreter::throw_exception_entry() != NULL, "generate it first");
+ AddressLiteral thrower(Interpreter::throw_exception_entry());
+ __ jump_to(thrower, G3_scratch);
+ __ delayed()->nop();
+ return entry;
+}
+
+address TemplateInterpreterGenerator::generate_ClassCastException_handler() {
+ address entry = __ pc();
+ // expression stack must be empty before entering the VM if an exception
+ // happened
+ __ empty_expression_stack();
+ // load exception object
+ __ call_VM(Oexception,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::throw_ClassCastException),
+ Otos_i);
+ __ should_not_reach_here();
+ return entry;
+}
+
+
+address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler(const char* name) {
+ address entry = __ pc();
+ // expression stack must be empty before entering the VM if an exception happened
+ __ empty_expression_stack();
+ // convention: expect aberrant index in register G3_scratch, then shuffle the
+ // index to G4_scratch for the VM call
+ __ mov(G3_scratch, G4_scratch);
+ __ set((intptr_t)name, G3_scratch);
+ __ call_VM(Oexception, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException), G3_scratch, G4_scratch);
+ __ should_not_reach_here();
+ return entry;
+}
+
+
+address TemplateInterpreterGenerator::generate_StackOverflowError_handler() {
+ address entry = __ pc();
+ // expression stack must be empty before entering the VM if an exception happened
+ __ empty_expression_stack();
+ __ call_VM(Oexception, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_StackOverflowError));
+ __ should_not_reach_here();
+ return entry;
+}
+
+
+address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step, size_t index_size) {
+ address entry = __ pc();
+
+ if (state == atos) {
+ __ profile_return_type(O0, G3_scratch, G1_scratch);
+ }
+
+#if !defined(_LP64) && defined(COMPILER2)
+ // All return values are where we want them, except for Longs. C2 returns
+ // longs in G1 in the 32-bit build whereas the interpreter wants them in O0/O1.
+ // Since the interpreter will return longs in G1 and O0/O1 in the 32bit
+ // build even if we are returning from interpreted we just do a little
+ // stupid shuffing.
+ // Note: I tried to make c2 return longs in O0/O1 and G1 so we wouldn't have to
+ // do this here. Unfortunately if we did a rethrow we'd see an machepilog node
+ // first which would move g1 -> O0/O1 and destroy the exception we were throwing.
+
+ if (state == ltos) {
+ __ srl (G1, 0, O1);
+ __ srlx(G1, 32, O0);
+ }
+#endif // !_LP64 && COMPILER2
+
+ // The callee returns with the stack possibly adjusted by adapter transition
+ // We remove that possible adjustment here.
+ // All interpreter local registers are untouched. Any result is passed back
+ // in the O0/O1 or float registers. Before continuing, the arguments must be
+ // popped from the java expression stack; i.e., Lesp must be adjusted.
+
+ __ mov(Llast_SP, SP); // Remove any adapter added stack space.
+
+ const Register cache = G3_scratch;
+ const Register index = G1_scratch;
+ __ get_cache_and_index_at_bcp(cache, index, 1, index_size);
+
+ const Register flags = cache;
+ __ ld_ptr(cache, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::flags_offset(), flags);
+ const Register parameter_size = flags;
+ __ and3(flags, ConstantPoolCacheEntry::parameter_size_mask, parameter_size); // argument size in words
+ __ sll(parameter_size, Interpreter::logStackElementSize, parameter_size); // each argument size in bytes
+ __ add(Lesp, parameter_size, Lesp); // pop arguments
+ __ dispatch_next(state, step);
+
+ return entry;
+}
+
+
+address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, int step) {
+ address entry = __ pc();
+ __ get_constant_pool_cache(LcpoolCache); // load LcpoolCache
+#if INCLUDE_JVMCI
+ // Check if we need to take lock at entry of synchronized method.
+ if (UseJVMCICompiler) {
+ Label L;
+ Address pending_monitor_enter_addr(G2_thread, JavaThread::pending_monitorenter_offset());
+ __ ldbool(pending_monitor_enter_addr, Gtemp); // Load if pending monitor enter
+ __ cmp_and_br_short(Gtemp, G0, Assembler::equal, Assembler::pn, L);
+ // Clear flag.
+ __ stbool(G0, pending_monitor_enter_addr);
+ // Take lock.
+ lock_method();
+ __ bind(L);
+ }
+#endif
+ { Label L;
+ Address exception_addr(G2_thread, Thread::pending_exception_offset());
+ __ ld_ptr(exception_addr, Gtemp); // Load pending exception.
+ __ br_null_short(Gtemp, Assembler::pt, L);
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception));
+ __ should_not_reach_here();
+ __ bind(L);
+ }
+ __ dispatch_next(state, step);
+ return entry;
+}
+
+// A result handler converts/unboxes a native call result into
+// a java interpreter/compiler result. The current frame is an
+// interpreter frame. The activation frame unwind code must be
+// consistent with that of TemplateTable::_return(...). In the
+// case of native methods, the caller's SP was not modified.
+address TemplateInterpreterGenerator::generate_result_handler_for(BasicType type) {
+ address entry = __ pc();
+ Register Itos_i = Otos_i ->after_save();
+ Register Itos_l = Otos_l ->after_save();
+ Register Itos_l1 = Otos_l1->after_save();
+ Register Itos_l2 = Otos_l2->after_save();
+ switch (type) {
+ case T_BOOLEAN: __ subcc(G0, O0, G0); __ addc(G0, 0, Itos_i); break; // !0 => true; 0 => false
+ case T_CHAR : __ sll(O0, 16, O0); __ srl(O0, 16, Itos_i); break; // cannot use and3, 0xFFFF too big as immediate value!
+ case T_BYTE : __ sll(O0, 24, O0); __ sra(O0, 24, Itos_i); break;
+ case T_SHORT : __ sll(O0, 16, O0); __ sra(O0, 16, Itos_i); break;
+ case T_LONG :
+#ifndef _LP64
+ __ mov(O1, Itos_l2); // move other half of long
+#endif // ifdef or no ifdef, fall through to the T_INT case
+ case T_INT : __ mov(O0, Itos_i); break;
+ case T_VOID : /* nothing to do */ break;
+ case T_FLOAT : assert(F0 == Ftos_f, "fix this code" ); break;
+ case T_DOUBLE : assert(F0 == Ftos_d, "fix this code" ); break;
+ case T_OBJECT :
+ __ ld_ptr(FP, (frame::interpreter_frame_oop_temp_offset*wordSize) + STACK_BIAS, Itos_i);
+ __ verify_oop(Itos_i);
+ break;
+ default : ShouldNotReachHere();
+ }
+ __ ret(); // return from interpreter activation
+ __ delayed()->restore(I5_savedSP, G0, SP); // remove interpreter frame
+ NOT_PRODUCT(__ emit_int32(0);) // marker for disassembly
+ return entry;
+}
+
+address TemplateInterpreterGenerator::generate_safept_entry_for(TosState state, address runtime_entry) {
+ address entry = __ pc();
+ __ push(state);
+ __ call_VM(noreg, runtime_entry);
+ __ dispatch_via(vtos, Interpreter::normal_table(vtos));
+ return entry;
+}
+
+
+address TemplateInterpreterGenerator::generate_continuation_for(TosState state) {
+ address entry = __ pc();
+ __ dispatch_next(state);
+ return entry;
+}
+
+//
+// Helpers for commoning out cases in the various type of method entries.
+//
+
+// increment invocation count & check for overflow
+//
+// Note: checking for negative value instead of overflow
+// so we have a 'sticky' overflow test
+//
+// Lmethod: method
+// ??: invocation counter
+//
+void InterpreterGenerator::generate_counter_incr(Label* overflow, Label* profile_method, Label* profile_method_continue) {
+ // Note: In tiered we increment either counters in MethodCounters* or in
+ // MDO depending if we're profiling or not.
+ const Register G3_method_counters = G3_scratch;
+ Label done;
+
+ if (TieredCompilation) {
+ const int increment = InvocationCounter::count_increment;
+ Label no_mdo;
+ if (ProfileInterpreter) {
+ // If no method data exists, go to profile_continue.
+ __ ld_ptr(Lmethod, Method::method_data_offset(), G4_scratch);
+ __ br_null_short(G4_scratch, Assembler::pn, no_mdo);
+ // Increment counter
+ Address mdo_invocation_counter(G4_scratch,
+ in_bytes(MethodData::invocation_counter_offset()) +
+ in_bytes(InvocationCounter::counter_offset()));
+ Address mask(G4_scratch, in_bytes(MethodData::invoke_mask_offset()));
+ __ increment_mask_and_jump(mdo_invocation_counter, increment, mask,
+ G3_scratch, Lscratch,
+ Assembler::zero, overflow);
+ __ ba_short(done);
+ }
+
+ // Increment counter in MethodCounters*
+ __ bind(no_mdo);
+ Address invocation_counter(G3_method_counters,
+ in_bytes(MethodCounters::invocation_counter_offset()) +
+ in_bytes(InvocationCounter::counter_offset()));
+ __ get_method_counters(Lmethod, G3_method_counters, done);
+ Address mask(G3_method_counters, in_bytes(MethodCounters::invoke_mask_offset()));
+ __ increment_mask_and_jump(invocation_counter, increment, mask,
+ G4_scratch, Lscratch,
+ Assembler::zero, overflow);
+ __ bind(done);
+ } else { // not TieredCompilation
+ // Update standard invocation counters
+ __ get_method_counters(Lmethod, G3_method_counters, done);
+ __ increment_invocation_counter(G3_method_counters, O0, G4_scratch);
+ if (ProfileInterpreter) {
+ Address interpreter_invocation_counter(G3_method_counters,
+ in_bytes(MethodCounters::interpreter_invocation_counter_offset()));
+ __ ld(interpreter_invocation_counter, G4_scratch);
+ __ inc(G4_scratch);
+ __ st(G4_scratch, interpreter_invocation_counter);
+ }
+
+ if (ProfileInterpreter && profile_method != NULL) {
+ // Test to see if we should create a method data oop
+ Address profile_limit(G3_method_counters, in_bytes(MethodCounters::interpreter_profile_limit_offset()));
+ __ ld(profile_limit, G1_scratch);
+ __ cmp_and_br_short(O0, G1_scratch, Assembler::lessUnsigned, Assembler::pn, *profile_method_continue);
+
+ // if no method data exists, go to profile_method
+ __ test_method_data_pointer(*profile_method);
+ }
+
+ Address invocation_limit(G3_method_counters, in_bytes(MethodCounters::interpreter_invocation_limit_offset()));
+ __ ld(invocation_limit, G3_scratch);
+ __ cmp(O0, G3_scratch);
+ __ br(Assembler::greaterEqualUnsigned, false, Assembler::pn, *overflow); // Far distance
+ __ delayed()->nop();
+ __ bind(done);
+ }
+
+}
+
+// Allocate monitor and lock method (asm interpreter)
+// ebx - Method*
+//
+void TemplateInterpreterGenerator::lock_method() {
+ __ ld(Lmethod, in_bytes(Method::access_flags_offset()), O0); // Load access flags.
+
+#ifdef ASSERT
+ { Label ok;
+ __ btst(JVM_ACC_SYNCHRONIZED, O0);
+ __ br( Assembler::notZero, false, Assembler::pt, ok);
+ __ delayed()->nop();
+ __ stop("method doesn't need synchronization");
+ __ bind(ok);
+ }
+#endif // ASSERT
+
+ // get synchronization object to O0
+ { Label done;
+ const int mirror_offset = in_bytes(Klass::java_mirror_offset());
+ __ btst(JVM_ACC_STATIC, O0);
+ __ br( Assembler::zero, true, Assembler::pt, done);
+ __ delayed()->ld_ptr(Llocals, Interpreter::local_offset_in_bytes(0), O0); // get receiver for not-static case
+
+ __ ld_ptr( Lmethod, in_bytes(Method::const_offset()), O0);
+ __ ld_ptr( O0, in_bytes(ConstMethod::constants_offset()), O0);
+ __ ld_ptr( O0, ConstantPool::pool_holder_offset_in_bytes(), O0);
+
+ // lock the mirror, not the Klass*
+ __ ld_ptr( O0, mirror_offset, O0);
+
+#ifdef ASSERT
+ __ tst(O0);
+ __ breakpoint_trap(Assembler::zero, Assembler::ptr_cc);
+#endif // ASSERT
+
+ __ bind(done);
+ }
+
+ __ add_monitor_to_stack(true, noreg, noreg); // allocate monitor elem
+ __ st_ptr( O0, Lmonitors, BasicObjectLock::obj_offset_in_bytes()); // store object
+ // __ untested("lock_object from method entry");
+ __ lock_object(Lmonitors, O0);
+}
+
+
+void TemplateInterpreterGenerator::generate_stack_overflow_check(Register Rframe_size,
+ Register Rscratch,
+ Register Rscratch2) {
+ const int page_size = os::vm_page_size();
+ Label after_frame_check;
+
+ assert_different_registers(Rframe_size, Rscratch, Rscratch2);
+
+ __ set(page_size, Rscratch);
+ __ cmp_and_br_short(Rframe_size, Rscratch, Assembler::lessEqual, Assembler::pt, after_frame_check);
+
+ // get the stack base, and in debug, verify it is non-zero
+ __ ld_ptr( G2_thread, Thread::stack_base_offset(), Rscratch );
+#ifdef ASSERT
+ Label base_not_zero;
+ __ br_notnull_short(Rscratch, Assembler::pn, base_not_zero);
+ __ stop("stack base is zero in generate_stack_overflow_check");
+ __ bind(base_not_zero);
+#endif
+
+ // get the stack size, and in debug, verify it is non-zero
+ assert( sizeof(size_t) == sizeof(intptr_t), "wrong load size" );
+ __ ld_ptr( G2_thread, Thread::stack_size_offset(), Rscratch2 );
+#ifdef ASSERT
+ Label size_not_zero;
+ __ br_notnull_short(Rscratch2, Assembler::pn, size_not_zero);
+ __ stop("stack size is zero in generate_stack_overflow_check");
+ __ bind(size_not_zero);
+#endif
+
+ // compute the beginning of the protected zone minus the requested frame size
+ __ sub( Rscratch, Rscratch2, Rscratch );
+ __ set( (StackRedPages+StackYellowPages) * page_size, Rscratch2 );
+ __ add( Rscratch, Rscratch2, Rscratch );
+
+ // Add in the size of the frame (which is the same as subtracting it from the
+ // SP, which would take another register
+ __ add( Rscratch, Rframe_size, Rscratch );
+
+ // the frame is greater than one page in size, so check against
+ // the bottom of the stack
+ __ cmp_and_brx_short(SP, Rscratch, Assembler::greaterUnsigned, Assembler::pt, after_frame_check);
+
+ // the stack will overflow, throw an exception
+
+ // Note that SP is restored to sender's sp (in the delay slot). This
+ // is necessary if the sender's frame is an extended compiled frame
+ // (see gen_c2i_adapter()) and safer anyway in case of JSR292
+ // adaptations.
+
+ // Note also that the restored frame is not necessarily interpreted.
+ // Use the shared runtime version of the StackOverflowError.
+ assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "stub not yet generated");
+ AddressLiteral stub(StubRoutines::throw_StackOverflowError_entry());
+ __ jump_to(stub, Rscratch);
+ __ delayed()->mov(O5_savedSP, SP);
+
+ // if you get to here, then there is enough stack space
+ __ bind( after_frame_check );
+}
+
+
+//
+// Generate a fixed interpreter frame. This is identical setup for interpreted
+// methods and for native methods hence the shared code.
+
+
+//----------------------------------------------------------------------------------------------------
+// Stack frame layout
+//
+// When control flow reaches any of the entry types for the interpreter
+// the following holds ->
+//
+// C2 Calling Conventions:
+//
+// The entry code below assumes that the following registers are set
+// when coming in:
+// G5_method: holds the Method* of the method to call
+// Lesp: points to the TOS of the callers expression stack
+// after having pushed all the parameters
+//
+// The entry code does the following to setup an interpreter frame
+// pop parameters from the callers stack by adjusting Lesp
+// set O0 to Lesp
+// compute X = (max_locals - num_parameters)
+// bump SP up by X to accomadate the extra locals
+// compute X = max_expression_stack
+// + vm_local_words
+// + 16 words of register save area
+// save frame doing a save sp, -X, sp growing towards lower addresses
+// set Lbcp, Lmethod, LcpoolCache
+// set Llocals to i0
+// set Lmonitors to FP - rounded_vm_local_words
+// set Lesp to Lmonitors - 4
+//
+// The frame has now been setup to do the rest of the entry code
+
+// Try this optimization: Most method entries could live in a
+// "one size fits all" stack frame without all the dynamic size
+// calculations. It might be profitable to do all this calculation
+// statically and approximately for "small enough" methods.
+
+//-----------------------------------------------------------------------------------------------
+
+// C1 Calling conventions
+//
+// Upon method entry, the following registers are setup:
+//
+// g2 G2_thread: current thread
+// g5 G5_method: method to activate
+// g4 Gargs : pointer to last argument
+//
+//
+// Stack:
+//
+// +---------------+ <--- sp
+// | |
+// : reg save area :
+// | |
+// +---------------+ <--- sp + 0x40
+// | |
+// : extra 7 slots : note: these slots are not really needed for the interpreter (fix later)
+// | |
+// +---------------+ <--- sp + 0x5c
+// | |
+// : free :
+// | |
+// +---------------+ <--- Gargs
+// | |
+// : arguments :
+// | |
+// +---------------+
+// | |
+//
+//
+//
+// AFTER FRAME HAS BEEN SETUP for method interpretation the stack looks like:
+//
+// +---------------+ <--- sp
+// | |
+// : reg save area :
+// | |
+// +---------------+ <--- sp + 0x40
+// | |
+// : extra 7 slots : note: these slots are not really needed for the interpreter (fix later)
+// | |
+// +---------------+ <--- sp + 0x5c
+// | |
+// : :
+// | | <--- Lesp
+// +---------------+ <--- Lmonitors (fp - 0x18)
+// | VM locals |
+// +---------------+ <--- fp
+// | |
+// : reg save area :
+// | |
+// +---------------+ <--- fp + 0x40
+// | |
+// : extra 7 slots : note: these slots are not really needed for the interpreter (fix later)
+// | |
+// +---------------+ <--- fp + 0x5c
+// | |
+// : free :
+// | |
+// +---------------+
+// | |
+// : nonarg locals :
+// | |
+// +---------------+
+// | |
+// : arguments :
+// | | <--- Llocals
+// +---------------+ <--- Gargs
+// | |
+
+void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) {
+ //
+ //
+ // The entry code sets up a new interpreter frame in 4 steps:
+ //
+ // 1) Increase caller's SP by for the extra local space needed:
+ // (check for overflow)
+ // Efficient implementation of xload/xstore bytecodes requires
+ // that arguments and non-argument locals are in a contigously
+ // addressable memory block => non-argument locals must be
+ // allocated in the caller's frame.
+ //
+ // 2) Create a new stack frame and register window:
+ // The new stack frame must provide space for the standard
+ // register save area, the maximum java expression stack size,
+ // the monitor slots (0 slots initially), and some frame local
+ // scratch locations.
+ //
+ // 3) The following interpreter activation registers must be setup:
+ // Lesp : expression stack pointer
+ // Lbcp : bytecode pointer
+ // Lmethod : method
+ // Llocals : locals pointer
+ // Lmonitors : monitor pointer
+ // LcpoolCache: constant pool cache
+ //
+ // 4) Initialize the non-argument locals if necessary:
+ // Non-argument locals may need to be initialized to NULL
+ // for GC to work. If the oop-map information is accurate
+ // (in the absence of the JSR problem), no initialization
+ // is necessary.
+ //
+ // (gri - 2/25/2000)
+
+
+ int rounded_vm_local_words = round_to( frame::interpreter_frame_vm_local_words, WordsPerLong );
+
+ const int extra_space =
+ rounded_vm_local_words + // frame local scratch space
+ Method::extra_stack_entries() + // extra stack for jsr 292
+ frame::memory_parameter_word_sp_offset + // register save area
+ (native_call ? frame::interpreter_frame_extra_outgoing_argument_words : 0);
+
+ const Register Glocals_size = G3;
+ const Register RconstMethod = Glocals_size;
+ const Register Otmp1 = O3;
+ const Register Otmp2 = O4;
+ // Lscratch can't be used as a temporary because the call_stub uses
+ // it to assert that the stack frame was setup correctly.
+ const Address constMethod (G5_method, Method::const_offset());
+ const Address size_of_parameters(RconstMethod, ConstMethod::size_of_parameters_offset());
+
+ __ ld_ptr( constMethod, RconstMethod );
+ __ lduh( size_of_parameters, Glocals_size);
+
+ // Gargs points to first local + BytesPerWord
+ // Set the saved SP after the register window save
+ //
+ assert_different_registers(Gargs, Glocals_size, Gframe_size, O5_savedSP);
+ __ sll(Glocals_size, Interpreter::logStackElementSize, Otmp1);
+ __ add(Gargs, Otmp1, Gargs);
+
+ if (native_call) {
+ __ calc_mem_param_words( Glocals_size, Gframe_size );
+ __ add( Gframe_size, extra_space, Gframe_size);
+ __ round_to( Gframe_size, WordsPerLong );
+ __ sll( Gframe_size, LogBytesPerWord, Gframe_size );
+ } else {
+
+ //
+ // Compute number of locals in method apart from incoming parameters
+ //
+ const Address size_of_locals (Otmp1, ConstMethod::size_of_locals_offset());
+ __ ld_ptr( constMethod, Otmp1 );
+ __ lduh( size_of_locals, Otmp1 );
+ __ sub( Otmp1, Glocals_size, Glocals_size );
+ __ round_to( Glocals_size, WordsPerLong );
+ __ sll( Glocals_size, Interpreter::logStackElementSize, Glocals_size );
+
+ // see if the frame is greater than one page in size. If so,
+ // then we need to verify there is enough stack space remaining
+ // Frame_size = (max_stack + extra_space) * BytesPerWord;
+ __ ld_ptr( constMethod, Gframe_size );
+ __ lduh( Gframe_size, in_bytes(ConstMethod::max_stack_offset()), Gframe_size );
+ __ add( Gframe_size, extra_space, Gframe_size );
+ __ round_to( Gframe_size, WordsPerLong );
+ __ sll( Gframe_size, Interpreter::logStackElementSize, Gframe_size);
+
+ // Add in java locals size for stack overflow check only
+ __ add( Gframe_size, Glocals_size, Gframe_size );
+
+ const Register Otmp2 = O4;
+ assert_different_registers(Otmp1, Otmp2, O5_savedSP);
+ generate_stack_overflow_check(Gframe_size, Otmp1, Otmp2);
+
+ __ sub( Gframe_size, Glocals_size, Gframe_size);
+
+ //
+ // bump SP to accomodate the extra locals
+ //
+ __ sub( SP, Glocals_size, SP );
+ }
+
+ //
+ // now set up a stack frame with the size computed above
+ //
+ __ neg( Gframe_size );
+ __ save( SP, Gframe_size, SP );
+
+ //
+ // now set up all the local cache registers
+ //
+ // NOTE: At this point, Lbyte_code/Lscratch has been modified. Note
+ // that all present references to Lbyte_code initialize the register
+ // immediately before use
+ if (native_call) {
+ __ mov(G0, Lbcp);
+ } else {
+ __ ld_ptr(G5_method, Method::const_offset(), Lbcp);
+ __ add(Lbcp, in_bytes(ConstMethod::codes_offset()), Lbcp);
+ }
+ __ mov( G5_method, Lmethod); // set Lmethod
+ __ get_constant_pool_cache( LcpoolCache ); // set LcpoolCache
+ __ sub(FP, rounded_vm_local_words * BytesPerWord, Lmonitors ); // set Lmonitors
+#ifdef _LP64
+ __ add( Lmonitors, STACK_BIAS, Lmonitors ); // Account for 64 bit stack bias
+#endif
+ __ sub(Lmonitors, BytesPerWord, Lesp); // set Lesp
+
+ // setup interpreter activation registers
+ __ sub(Gargs, BytesPerWord, Llocals); // set Llocals
+
+ if (ProfileInterpreter) {
+#ifdef FAST_DISPATCH
+ // FAST_DISPATCH and ProfileInterpreter are mutually exclusive since
+ // they both use I2.
+ assert(0, "FAST_DISPATCH and +ProfileInterpreter are mutually exclusive");
+#endif // FAST_DISPATCH
+ __ set_method_data_pointer();
+ }
+
+}
+
+// Method entry for java.lang.ref.Reference.get.
+address InterpreterGenerator::generate_Reference_get_entry(void) {
+#if INCLUDE_ALL_GCS
+ // Code: _aload_0, _getfield, _areturn
+ // parameter size = 1
+ //
+ // The code that gets generated by this routine is split into 2 parts:
+ // 1. The "intrinsified" code for G1 (or any SATB based GC),
+ // 2. The slow path - which is an expansion of the regular method entry.
+ //
+ // Notes:-
+ // * In the G1 code we do not check whether we need to block for
+ // a safepoint. If G1 is enabled then we must execute the specialized
+ // code for Reference.get (except when the Reference object is null)
+ // so that we can log the value in the referent field with an SATB
+ // update buffer.
+ // If the code for the getfield template is modified so that the
+ // G1 pre-barrier code is executed when the current method is
+ // Reference.get() then going through the normal method entry
+ // will be fine.
+ // * The G1 code can, however, check the receiver object (the instance
+ // of java.lang.Reference) and jump to the slow path if null. If the
+ // Reference object is null then we obviously cannot fetch the referent
+ // and so we don't need to call the G1 pre-barrier. Thus we can use the
+ // regular method entry code to generate the NPE.
+ //
+ // This code is based on generate_accessor_enty.
+
+ address entry = __ pc();
+
+ const int referent_offset = java_lang_ref_Reference::referent_offset;
+ guarantee(referent_offset > 0, "referent offset not initialized");
+
+ if (UseG1GC) {
+ Label slow_path;
+
+ // In the G1 code we don't check if we need to reach a safepoint. We
+ // continue and the thread will safepoint at the next bytecode dispatch.
+
+ // Check if local 0 != NULL
+ // If the receiver is null then it is OK to jump to the slow path.
+ __ ld_ptr(Gargs, G0, Otos_i ); // get local 0
+ // check if local 0 == NULL and go the slow path
+ __ cmp_and_brx_short(Otos_i, 0, Assembler::equal, Assembler::pn, slow_path);
+
+
+ // Load the value of the referent field.
+ if (Assembler::is_simm13(referent_offset)) {
+ __ load_heap_oop(Otos_i, referent_offset, Otos_i);
+ } else {
+ __ set(referent_offset, G3_scratch);
+ __ load_heap_oop(Otos_i, G3_scratch, Otos_i);
+ }
+
+ // Generate the G1 pre-barrier code to log the value of
+ // the referent field in an SATB buffer. Note with
+ // these parameters the pre-barrier does not generate
+ // the load of the previous value
+
+ __ g1_write_barrier_pre(noreg /* obj */, noreg /* index */, 0 /* offset */,
+ Otos_i /* pre_val */,
+ G3_scratch /* tmp */,
+ true /* preserve_o_regs */);
+
+ // _areturn
+ __ retl(); // return from leaf routine
+ __ delayed()->mov(O5_savedSP, SP);
+
+ // Generate regular method entry
+ __ bind(slow_path);
+ __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::zerolocals));
+ return entry;
+ }
+#endif // INCLUDE_ALL_GCS
+
+ // If G1 is not enabled then attempt to go through the accessor entry point
+ // Reference.get is an accessor
+ return NULL;
+}
+
+/**
+ * Method entry for static native methods:
+ * int java.util.zip.CRC32.update(int crc, int b)
+ */
+address InterpreterGenerator::generate_CRC32_update_entry() {
+
+ if (UseCRC32Intrinsics) {
+ address entry = __ pc();
+
+ Label L_slow_path;
+ // If we need a safepoint check, generate full interpreter entry.
+ ExternalAddress state(SafepointSynchronize::address_of_state());
+ __ set(ExternalAddress(SafepointSynchronize::address_of_state()), O2);
+ __ set(SafepointSynchronize::_not_synchronized, O3);
+ __ cmp_and_br_short(O2, O3, Assembler::notEqual, Assembler::pt, L_slow_path);
+
+ // Load parameters
+ const Register crc = O0; // initial crc
+ const Register val = O1; // byte to update with
+ const Register table = O2; // address of 256-entry lookup table
+
+ __ ldub(Gargs, 3, val);
+ __ lduw(Gargs, 8, crc);
+
+ __ set(ExternalAddress(StubRoutines::crc_table_addr()), table);
+
+ __ not1(crc); // ~crc
+ __ clruwu(crc);
+ __ update_byte_crc32(crc, val, table);
+ __ not1(crc); // ~crc
+
+ // result in O0
+ __ retl();
+ __ delayed()->nop();
+
+ // generate a vanilla native entry as the slow path
+ __ bind(L_slow_path);
+ __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::native));
+ return entry;
+ }
+ return NULL;
+}
+
+/**
+ * Method entry for static native methods:
+ * int java.util.zip.CRC32.updateBytes(int crc, byte[] b, int off, int len)
+ * int java.util.zip.CRC32.updateByteBuffer(int crc, long buf, int off, int len)
+ */
+address InterpreterGenerator::generate_CRC32_updateBytes_entry(AbstractInterpreter::MethodKind kind) {
+
+ if (UseCRC32Intrinsics) {
+ address entry = __ pc();
+
+ Label L_slow_path;
+ // If we need a safepoint check, generate full interpreter entry.
+ ExternalAddress state(SafepointSynchronize::address_of_state());
+ __ set(ExternalAddress(SafepointSynchronize::address_of_state()), O2);
+ __ set(SafepointSynchronize::_not_synchronized, O3);
+ __ cmp_and_br_short(O2, O3, Assembler::notEqual, Assembler::pt, L_slow_path);
+
+ // Load parameters from the stack
+ const Register crc = O0; // initial crc
+ const Register buf = O1; // source java byte array address
+ const Register len = O2; // len
+ const Register offset = O3; // offset
+
+ // Arguments are reversed on java expression stack
+ // Calculate address of start element
+ if (kind == Interpreter::java_util_zip_CRC32_updateByteBuffer) {
+ __ lduw(Gargs, 0, len);
+ __ lduw(Gargs, 8, offset);
+ __ ldx( Gargs, 16, buf);
+ __ lduw(Gargs, 32, crc);
+ __ add(buf, offset, buf);
+ } else {
+ __ lduw(Gargs, 0, len);
+ __ lduw(Gargs, 8, offset);
+ __ ldx( Gargs, 16, buf);
+ __ lduw(Gargs, 24, crc);
+ __ add(buf, arrayOopDesc::base_offset_in_bytes(T_BYTE), buf); // account for the header size
+ __ add(buf ,offset, buf);
+ }
+
+ // Call the crc32 kernel
+ __ MacroAssembler::save_thread(L7_thread_cache);
+ __ kernel_crc32(crc, buf, len, O3);
+ __ MacroAssembler::restore_thread(L7_thread_cache);
+
+ // result in O0
+ __ retl();
+ __ delayed()->nop();
+
+ // generate a vanilla native entry as the slow path
+ __ bind(L_slow_path);
+ __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::native));
+ return entry;
+ }
+ return NULL;
+}
+
+//
+// Interpreter stub for calling a native method. (asm interpreter)
+// This sets up a somewhat different looking stack for calling the native method
+// than the typical interpreter frame setup.
+//
+
+address InterpreterGenerator::generate_native_entry(bool synchronized) {
+ address entry = __ pc();
+
+ // the following temporary registers are used during frame creation
+ const Register Gtmp1 = G3_scratch ;
+ const Register Gtmp2 = G1_scratch;
+ bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods;
+
+ // make sure registers are different!
+ assert_different_registers(G2_thread, G5_method, Gargs, Gtmp1, Gtmp2);
+
+ const Address Laccess_flags(Lmethod, Method::access_flags_offset());
+
+ const Register Glocals_size = G3;
+ assert_different_registers(Glocals_size, G4_scratch, Gframe_size);
+
+ // make sure method is native & not abstract
+ // rethink these assertions - they can be simplified and shared (gri 2/25/2000)
+#ifdef ASSERT
+ __ ld(G5_method, Method::access_flags_offset(), Gtmp1);
+ {
+ Label L;
+ __ btst(JVM_ACC_NATIVE, Gtmp1);
+ __ br(Assembler::notZero, false, Assembler::pt, L);
+ __ delayed()->nop();
+ __ stop("tried to execute non-native method as native");
+ __ bind(L);
+ }
+ { Label L;
+ __ btst(JVM_ACC_ABSTRACT, Gtmp1);
+ __ br(Assembler::zero, false, Assembler::pt, L);
+ __ delayed()->nop();
+ __ stop("tried to execute abstract method as non-abstract");
+ __ bind(L);
+ }
+#endif // ASSERT
+
+ // generate the code to allocate the interpreter stack frame
+ generate_fixed_frame(true);
+
+ //
+ // No locals to initialize for native method
+ //
+
+ // this slot will be set later, we initialize it to null here just in
+ // case we get a GC before the actual value is stored later
+ __ st_ptr(G0, FP, (frame::interpreter_frame_oop_temp_offset * wordSize) + STACK_BIAS);
+
+ const Address do_not_unlock_if_synchronized(G2_thread,
+ JavaThread::do_not_unlock_if_synchronized_offset());
+ // Since at this point in the method invocation the exception handler
+ // would try to exit the monitor of synchronized methods which hasn't
+ // been entered yet, we set the thread local variable
+ // _do_not_unlock_if_synchronized to true. If any exception was thrown by
+ // runtime, exception handling i.e. unlock_if_synchronized_method will
+ // check this thread local flag.
+ // This flag has two effects, one is to force an unwind in the topmost
+ // interpreter frame and not perform an unlock while doing so.
+
+ __ movbool(true, G3_scratch);
+ __ stbool(G3_scratch, do_not_unlock_if_synchronized);
+
+ // increment invocation counter and check for overflow
+ //
+ // Note: checking for negative value instead of overflow
+ // so we have a 'sticky' overflow test (may be of
+ // importance as soon as we have true MT/MP)
+ Label invocation_counter_overflow;
+ Label Lcontinue;
+ if (inc_counter) {
+ generate_counter_incr(&invocation_counter_overflow, NULL, NULL);
+
+ }
+ __ bind(Lcontinue);
+
+ bang_stack_shadow_pages(true);
+
+ // reset the _do_not_unlock_if_synchronized flag
+ __ stbool(G0, do_not_unlock_if_synchronized);
+
+ // check for synchronized methods
+ // Must happen AFTER invocation_counter check and stack overflow check,
+ // so method is not locked if overflows.
+
+ if (synchronized) {
+ lock_method();
+ } else {
+#ifdef ASSERT
+ { Label ok;
+ __ ld(Laccess_flags, O0);
+ __ btst(JVM_ACC_SYNCHRONIZED, O0);
+ __ br( Assembler::zero, false, Assembler::pt, ok);
+ __ delayed()->nop();
+ __ stop("method needs synchronization");
+ __ bind(ok);
+ }
+#endif // ASSERT
+ }
+
+
+ // start execution
+ __ verify_thread();
+
+ // JVMTI support
+ __ notify_method_entry();
+
+ // native call
+
+ // (note that O0 is never an oop--at most it is a handle)
+ // It is important not to smash any handles created by this call,
+ // until any oop handle in O0 is dereferenced.
+
+ // (note that the space for outgoing params is preallocated)
+
+ // get signature handler
+ { Label L;
+ Address signature_handler(Lmethod, Method::signature_handler_offset());
+ __ ld_ptr(signature_handler, G3_scratch);
+ __ br_notnull_short(G3_scratch, Assembler::pt, L);
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), Lmethod);
+ __ ld_ptr(signature_handler, G3_scratch);
+ __ bind(L);
+ }
+
+ // Push a new frame so that the args will really be stored in
+ // Copy a few locals across so the new frame has the variables
+ // we need but these values will be dead at the jni call and
+ // therefore not gc volatile like the values in the current
+ // frame (Lmethod in particular)
+
+ // Flush the method pointer to the register save area
+ __ st_ptr(Lmethod, SP, (Lmethod->sp_offset_in_saved_window() * wordSize) + STACK_BIAS);
+ __ mov(Llocals, O1);
+
+ // calculate where the mirror handle body is allocated in the interpreter frame:
+ __ add(FP, (frame::interpreter_frame_oop_temp_offset * wordSize) + STACK_BIAS, O2);
+
+ // Calculate current frame size
+ __ sub(SP, FP, O3); // Calculate negative of current frame size
+ __ save(SP, O3, SP); // Allocate an identical sized frame
+
+ // Note I7 has leftover trash. Slow signature handler will fill it in
+ // should we get there. Normal jni call will set reasonable last_Java_pc
+ // below (and fix I7 so the stack trace doesn't have a meaningless frame
+ // in it).
+
+ // Load interpreter frame's Lmethod into same register here
+
+ __ ld_ptr(FP, (Lmethod->sp_offset_in_saved_window() * wordSize) + STACK_BIAS, Lmethod);
+
+ __ mov(I1, Llocals);
+ __ mov(I2, Lscratch2); // save the address of the mirror
+
+
+ // ONLY Lmethod and Llocals are valid here!
+
+ // call signature handler, It will move the arg properly since Llocals in current frame
+ // matches that in outer frame
+
+ __ callr(G3_scratch, 0);
+ __ delayed()->nop();
+
+ // Result handler is in Lscratch
+
+ // Reload interpreter frame's Lmethod since slow signature handler may block
+ __ ld_ptr(FP, (Lmethod->sp_offset_in_saved_window() * wordSize) + STACK_BIAS, Lmethod);
+
+ { Label not_static;
+
+ __ ld(Laccess_flags, O0);
+ __ btst(JVM_ACC_STATIC, O0);
+ __ br( Assembler::zero, false, Assembler::pt, not_static);
+ // get native function entry point(O0 is a good temp until the very end)
+ __ delayed()->ld_ptr(Lmethod, in_bytes(Method::native_function_offset()), O0);
+ // for static methods insert the mirror argument
+ const int mirror_offset = in_bytes(Klass::java_mirror_offset());
+
+ __ ld_ptr(Lmethod, Method:: const_offset(), O1);
+ __ ld_ptr(O1, ConstMethod::constants_offset(), O1);
+ __ ld_ptr(O1, ConstantPool::pool_holder_offset_in_bytes(), O1);
+ __ ld_ptr(O1, mirror_offset, O1);
+#ifdef ASSERT
+ if (!PrintSignatureHandlers) // do not dirty the output with this
+ { Label L;
+ __ br_notnull_short(O1, Assembler::pt, L);
+ __ stop("mirror is missing");
+ __ bind(L);
+ }
+#endif // ASSERT
+ __ st_ptr(O1, Lscratch2, 0);
+ __ mov(Lscratch2, O1);
+ __ bind(not_static);
+ }
+
+ // At this point, arguments have been copied off of stack into
+ // their JNI positions, which are O1..O5 and SP[68..].
+ // Oops are boxed in-place on the stack, with handles copied to arguments.
+ // The result handler is in Lscratch. O0 will shortly hold the JNIEnv*.
+
+#ifdef ASSERT
+ { Label L;
+ __ br_notnull_short(O0, Assembler::pt, L);
+ __ stop("native entry point is missing");
+ __ bind(L);
+ }
+#endif // ASSERT
+
+ //
+ // setup the frame anchor
+ //
+ // The scavenge function only needs to know that the PC of this frame is
+ // in the interpreter method entry code, it doesn't need to know the exact
+ // PC and hence we can use O7 which points to the return address from the
+ // previous call in the code stream (signature handler function)
+ //
+ // The other trick is we set last_Java_sp to FP instead of the usual SP because
+ // we have pushed the extra frame in order to protect the volatile register(s)
+ // in that frame when we return from the jni call
+ //
+
+ __ set_last_Java_frame(FP, O7);
+ __ mov(O7, I7); // make dummy interpreter frame look like one above,
+ // not meaningless information that'll confuse me.
+
+ // flush the windows now. We don't care about the current (protection) frame
+ // only the outer frames
+
+ __ flushw();
+
+ // mark windows as flushed
+ Address flags(G2_thread, JavaThread::frame_anchor_offset() + JavaFrameAnchor::flags_offset());
+ __ set(JavaFrameAnchor::flushed, G3_scratch);
+ __ st(G3_scratch, flags);
+
+ // Transition from _thread_in_Java to _thread_in_native. We are already safepoint ready.
+
+ Address thread_state(G2_thread, JavaThread::thread_state_offset());
+#ifdef ASSERT
+ { Label L;
+ __ ld(thread_state, G3_scratch);
+ __ cmp_and_br_short(G3_scratch, _thread_in_Java, Assembler::equal, Assembler::pt, L);
+ __ stop("Wrong thread state in native stub");
+ __ bind(L);
+ }
+#endif // ASSERT
+ __ set(_thread_in_native, G3_scratch);
+ __ st(G3_scratch, thread_state);
+
+ // Call the jni method, using the delay slot to set the JNIEnv* argument.
+ __ save_thread(L7_thread_cache); // save Gthread
+ __ callr(O0, 0);
+ __ delayed()->
+ add(L7_thread_cache, in_bytes(JavaThread::jni_environment_offset()), O0);
+
+ // Back from jni method Lmethod in this frame is DEAD, DEAD, DEAD
+
+ __ restore_thread(L7_thread_cache); // restore G2_thread
+ __ reinit_heapbase();
+
+ // must we block?
+
+ // Block, if necessary, before resuming in _thread_in_Java state.
+ // In order for GC to work, don't clear the last_Java_sp until after blocking.
+ { Label no_block;
+ AddressLiteral sync_state(SafepointSynchronize::address_of_state());
+
+ // Switch thread to "native transition" state before reading the synchronization state.
+ // This additional state is necessary because reading and testing the synchronization
+ // state is not atomic w.r.t. GC, as this scenario demonstrates:
+ // Java thread A, in _thread_in_native state, loads _not_synchronized and is preempted.
+ // VM thread changes sync state to synchronizing and suspends threads for GC.
+ // Thread A is resumed to finish this native method, but doesn't block here since it
+ // didn't see any synchronization is progress, and escapes.
+ __ set(_thread_in_native_trans, G3_scratch);
+ __ st(G3_scratch, thread_state);
+ if(os::is_MP()) {
+ if (UseMembar) {
+ // Force this write out before the read below
+ __ membar(Assembler::StoreLoad);
+ } else {
+ // Write serialization page so VM thread can do a pseudo remote membar.
+ // We use the current thread pointer to calculate a thread specific
+ // offset to write to within the page. This minimizes bus traffic
+ // due to cache line collision.
+ __ serialize_memory(G2_thread, G1_scratch, G3_scratch);
+ }
+ }
+ __ load_contents(sync_state, G3_scratch);
+ __ cmp(G3_scratch, SafepointSynchronize::_not_synchronized);
+
+ Label L;
+ __ br(Assembler::notEqual, false, Assembler::pn, L);
+ __ delayed()->ld(G2_thread, JavaThread::suspend_flags_offset(), G3_scratch);
+ __ cmp_and_br_short(G3_scratch, 0, Assembler::equal, Assembler::pt, no_block);
+ __ bind(L);
+
+ // Block. Save any potential method result value before the operation and
+ // use a leaf call to leave the last_Java_frame setup undisturbed.
+ save_native_result();
+ __ call_VM_leaf(L7_thread_cache,
+ CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans),
+ G2_thread);
+
+ // Restore any method result value
+ restore_native_result();
+ __ bind(no_block);
+ }
+
+ // Clear the frame anchor now
+
+ __ reset_last_Java_frame();
+
+ // Move the result handler address
+ __ mov(Lscratch, G3_scratch);
+ // return possible result to the outer frame
+#ifndef __LP64
+ __ mov(O0, I0);
+ __ restore(O1, G0, O1);
+#else
+ __ restore(O0, G0, O0);
+#endif /* __LP64 */
+
+ // Move result handler to expected register
+ __ mov(G3_scratch, Lscratch);
+
+ // Back in normal (native) interpreter frame. State is thread_in_native_trans
+ // switch to thread_in_Java.
+
+ __ set(_thread_in_Java, G3_scratch);
+ __ st(G3_scratch, thread_state);
+
+ // reset handle block
+ __ ld_ptr(G2_thread, JavaThread::active_handles_offset(), G3_scratch);
+ __ st(G0, G3_scratch, JNIHandleBlock::top_offset_in_bytes());
+
+ // If we have an oop result store it where it will be safe for any further gc
+ // until we return now that we've released the handle it might be protected by
+
+ {
+ Label no_oop, store_result;
+
+ __ set((intptr_t)AbstractInterpreter::result_handler(T_OBJECT), G3_scratch);
+ __ cmp_and_brx_short(G3_scratch, Lscratch, Assembler::notEqual, Assembler::pt, no_oop);
+ __ addcc(G0, O0, O0);
+ __ brx(Assembler::notZero, true, Assembler::pt, store_result); // if result is not NULL:
+ __ delayed()->ld_ptr(O0, 0, O0); // unbox it
+ __ mov(G0, O0);
+
+ __ bind(store_result);
+ // Store it where gc will look for it and result handler expects it.
+ __ st_ptr(O0, FP, (frame::interpreter_frame_oop_temp_offset*wordSize) + STACK_BIAS);
+
+ __ bind(no_oop);
+
+ }
+
+
+ // handle exceptions (exception handling will handle unlocking!)
+ { Label L;
+ Address exception_addr(G2_thread, Thread::pending_exception_offset());
+ __ ld_ptr(exception_addr, Gtemp);
+ __ br_null_short(Gtemp, Assembler::pt, L);
+ // Note: This could be handled more efficiently since we know that the native
+ // method doesn't have an exception handler. We could directly return
+ // to the exception handler for the caller.
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception));
+ __ should_not_reach_here();
+ __ bind(L);
+ }
+
+ // JVMTI support (preserves thread register)
+ __ notify_method_exit(true, ilgl, InterpreterMacroAssembler::NotifyJVMTI);
+
+ if (synchronized) {
+ // save and restore any potential method result value around the unlocking operation
+ save_native_result();
+
+ __ add( __ top_most_monitor(), O1);
+ __ unlock_object(O1);
+
+ restore_native_result();
+ }
+
+#if defined(COMPILER2) && !defined(_LP64)
+
+ // C2 expects long results in G1 we can't tell if we're returning to interpreted
+ // or compiled so just be safe.
+
+ __ sllx(O0, 32, G1); // Shift bits into high G1
+ __ srl (O1, 0, O1); // Zero extend O1
+ __ or3 (O1, G1, G1); // OR 64 bits into G1
+
+#endif /* COMPILER2 && !_LP64 */
+
+ // dispose of return address and remove activation
+#ifdef ASSERT
+ {
+ Label ok;
+ __ cmp_and_brx_short(I5_savedSP, FP, Assembler::greaterEqualUnsigned, Assembler::pt, ok);
+ __ stop("bad I5_savedSP value");
+ __ should_not_reach_here();
+ __ bind(ok);
+ }
+#endif
+ if (TraceJumps) {
+ // Move target to register that is recordable
+ __ mov(Lscratch, G3_scratch);
+ __ JMP(G3_scratch, 0);
+ } else {
+ __ jmp(Lscratch, 0);
+ }
+ __ delayed()->nop();
+
+
+ if (inc_counter) {
+ // handle invocation counter overflow
+ __ bind(invocation_counter_overflow);
+ generate_counter_overflow(Lcontinue);
+ }
+
+
+
+ return entry;
+}
+
+
+// Generic method entry to (asm) interpreter
+address InterpreterGenerator::generate_normal_entry(bool synchronized) {
+ address entry = __ pc();
+
+ bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods;
+
+ // the following temporary registers are used during frame creation
+ const Register Gtmp1 = G3_scratch ;
+ const Register Gtmp2 = G1_scratch;
+
+ // make sure registers are different!
+ assert_different_registers(G2_thread, G5_method, Gargs, Gtmp1, Gtmp2);
+
+ const Address constMethod (G5_method, Method::const_offset());
+ // Seems like G5_method is live at the point this is used. So we could make this look consistent
+ // and use in the asserts.
+ const Address access_flags (Lmethod, Method::access_flags_offset());
+
+ const Register Glocals_size = G3;
+ assert_different_registers(Glocals_size, G4_scratch, Gframe_size);
+
+ // make sure method is not native & not abstract
+ // rethink these assertions - they can be simplified and shared (gri 2/25/2000)
+#ifdef ASSERT
+ __ ld(G5_method, Method::access_flags_offset(), Gtmp1);
+ {
+ Label L;
+ __ btst(JVM_ACC_NATIVE, Gtmp1);
+ __ br(Assembler::zero, false, Assembler::pt, L);
+ __ delayed()->nop();
+ __ stop("tried to execute native method as non-native");
+ __ bind(L);
+ }
+ { Label L;
+ __ btst(JVM_ACC_ABSTRACT, Gtmp1);
+ __ br(Assembler::zero, false, Assembler::pt, L);
+ __ delayed()->nop();
+ __ stop("tried to execute abstract method as non-abstract");
+ __ bind(L);
+ }
+#endif // ASSERT
+
+ // generate the code to allocate the interpreter stack frame
+
+ generate_fixed_frame(false);
+
+#ifdef FAST_DISPATCH
+ __ set((intptr_t)Interpreter::dispatch_table(), IdispatchTables);
+ // set bytecode dispatch table base
+#endif
+
+ //
+ // Code to initialize the extra (i.e. non-parm) locals
+ //
+ Register init_value = noreg; // will be G0 if we must clear locals
+ // The way the code was setup before zerolocals was always true for vanilla java entries.
+ // It could only be false for the specialized entries like accessor or empty which have
+ // no extra locals so the testing was a waste of time and the extra locals were always
+ // initialized. We removed this extra complication to already over complicated code.
+
+ init_value = G0;
+ Label clear_loop;
+
+ const Register RconstMethod = O1;
+ const Address size_of_parameters(RconstMethod, ConstMethod::size_of_parameters_offset());
+ const Address size_of_locals (RconstMethod, ConstMethod::size_of_locals_offset());
+
+ // NOTE: If you change the frame layout, this code will need to
+ // be updated!
+ __ ld_ptr( constMethod, RconstMethod );
+ __ lduh( size_of_locals, O2 );
+ __ lduh( size_of_parameters, O1 );
+ __ sll( O2, Interpreter::logStackElementSize, O2);
+ __ sll( O1, Interpreter::logStackElementSize, O1 );
+ __ sub( Llocals, O2, O2 );
+ __ sub( Llocals, O1, O1 );
+
+ __ bind( clear_loop );
+ __ inc( O2, wordSize );
+
+ __ cmp( O2, O1 );
+ __ brx( Assembler::lessEqualUnsigned, true, Assembler::pt, clear_loop );
+ __ delayed()->st_ptr( init_value, O2, 0 );
+
+ const Address do_not_unlock_if_synchronized(G2_thread,
+ JavaThread::do_not_unlock_if_synchronized_offset());
+ // Since at this point in the method invocation the exception handler
+ // would try to exit the monitor of synchronized methods which hasn't
+ // been entered yet, we set the thread local variable
+ // _do_not_unlock_if_synchronized to true. If any exception was thrown by
+ // runtime, exception handling i.e. unlock_if_synchronized_method will
+ // check this thread local flag.
+ __ movbool(true, G3_scratch);
+ __ stbool(G3_scratch, do_not_unlock_if_synchronized);
+
+ __ profile_parameters_type(G1_scratch, G3_scratch, G4_scratch, Lscratch);
+ // increment invocation counter and check for overflow
+ //
+ // Note: checking for negative value instead of overflow
+ // so we have a 'sticky' overflow test (may be of
+ // importance as soon as we have true MT/MP)
+ Label invocation_counter_overflow;
+ Label profile_method;
+ Label profile_method_continue;
+ Label Lcontinue;
+ if (inc_counter) {
+ generate_counter_incr(&invocation_counter_overflow, &profile_method, &profile_method_continue);
+ if (ProfileInterpreter) {
+ __ bind(profile_method_continue);
+ }
+ }
+ __ bind(Lcontinue);
+
+ bang_stack_shadow_pages(false);
+
+ // reset the _do_not_unlock_if_synchronized flag
+ __ stbool(G0, do_not_unlock_if_synchronized);
+
+ // check for synchronized methods
+ // Must happen AFTER invocation_counter check and stack overflow check,
+ // so method is not locked if overflows.
+
+ if (synchronized) {
+ lock_method();
+ } else {
+#ifdef ASSERT
+ { Label ok;
+ __ ld(access_flags, O0);
+ __ btst(JVM_ACC_SYNCHRONIZED, O0);
+ __ br( Assembler::zero, false, Assembler::pt, ok);
+ __ delayed()->nop();
+ __ stop("method needs synchronization");
+ __ bind(ok);
+ }
+#endif // ASSERT
+ }
+
+ // start execution
+
+ __ verify_thread();
+
+ // jvmti support
+ __ notify_method_entry();
+
+ // start executing instructions
+ __ dispatch_next(vtos);
+
+
+ if (inc_counter) {
+ if (ProfileInterpreter) {
+ // We have decided to profile this method in the interpreter
+ __ bind(profile_method);
+
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method));
+ __ set_method_data_pointer_for_bcp();
+ __ ba_short(profile_method_continue);
+ }
+
+ // handle invocation counter overflow
+ __ bind(invocation_counter_overflow);
+ generate_counter_overflow(Lcontinue);
+ }
+
+
+ return entry;
+}
+
+//----------------------------------------------------------------------------------------------------
+// Exceptions
+void TemplateInterpreterGenerator::generate_throw_exception() {
+
+ // Entry point in previous activation (i.e., if the caller was interpreted)
+ Interpreter::_rethrow_exception_entry = __ pc();
+ // O0: exception
+
+ // entry point for exceptions thrown within interpreter code
+ Interpreter::_throw_exception_entry = __ pc();
+ __ verify_thread();
+ // expression stack is undefined here
+ // O0: exception, i.e. Oexception
+ // Lbcp: exception bcp
+ __ verify_oop(Oexception);
+
+
+ // expression stack must be empty before entering the VM in case of an exception
+ __ empty_expression_stack();
+ // find exception handler address and preserve exception oop
+ // call C routine to find handler and jump to it
+ __ call_VM(O1, CAST_FROM_FN_PTR(address, InterpreterRuntime::exception_handler_for_exception), Oexception);
+ __ push_ptr(O1); // push exception for exception handler bytecodes
+
+ __ JMP(O0, 0); // jump to exception handler (may be remove activation entry!)
+ __ delayed()->nop();
+
+
+ // if the exception is not handled in the current frame
+ // the frame is removed and the exception is rethrown
+ // (i.e. exception continuation is _rethrow_exception)
+ //
+ // Note: At this point the bci is still the bxi for the instruction which caused
+ // the exception and the expression stack is empty. Thus, for any VM calls
+ // at this point, GC will find a legal oop map (with empty expression stack).
+
+ // in current activation
+ // tos: exception
+ // Lbcp: exception bcp
+
+ //
+ // JVMTI PopFrame support
+ //
+
+ Interpreter::_remove_activation_preserving_args_entry = __ pc();
+ Address popframe_condition_addr(G2_thread, JavaThread::popframe_condition_offset());
+ // Set the popframe_processing bit in popframe_condition indicating that we are
+ // currently handling popframe, so that call_VMs that may happen later do not trigger new
+ // popframe handling cycles.
+
+ __ ld(popframe_condition_addr, G3_scratch);
+ __ or3(G3_scratch, JavaThread::popframe_processing_bit, G3_scratch);
+ __ stw(G3_scratch, popframe_condition_addr);
+
+ // Empty the expression stack, as in normal exception handling
+ __ empty_expression_stack();
+ __ unlock_if_synchronized_method(vtos, /* throw_monitor_exception */ false, /* install_monitor_exception */ false);
+
+ {
+ // Check to see whether we are returning to a deoptimized frame.
+ // (The PopFrame call ensures that the caller of the popped frame is
+ // either interpreted or compiled and deoptimizes it if compiled.)
+ // In this case, we can't call dispatch_next() after the frame is
+ // popped, but instead must save the incoming arguments and restore
+ // them after deoptimization has occurred.
+ //
+ // Note that we don't compare the return PC against the
+ // deoptimization blob's unpack entry because of the presence of
+ // adapter frames in C2.
+ Label caller_not_deoptimized;
+ __ call_VM_leaf(L7_thread_cache, CAST_FROM_FN_PTR(address, InterpreterRuntime::interpreter_contains), I7);
+ __ br_notnull_short(O0, Assembler::pt, caller_not_deoptimized);
+
+ const Register Gtmp1 = G3_scratch;
+ const Register Gtmp2 = G1_scratch;
+ const Register RconstMethod = Gtmp1;
+ const Address constMethod(Lmethod, Method::const_offset());
+ const Address size_of_parameters(RconstMethod, ConstMethod::size_of_parameters_offset());
+
+ // Compute size of arguments for saving when returning to deoptimized caller
+ __ ld_ptr(constMethod, RconstMethod);
+ __ lduh(size_of_parameters, Gtmp1);
+ __ sll(Gtmp1, Interpreter::logStackElementSize, Gtmp1);
+ __ sub(Llocals, Gtmp1, Gtmp2);
+ __ add(Gtmp2, wordSize, Gtmp2);
+ // Save these arguments
+ __ call_VM_leaf(L7_thread_cache, CAST_FROM_FN_PTR(address, Deoptimization::popframe_preserve_args), G2_thread, Gtmp1, Gtmp2);
+ // Inform deoptimization that it is responsible for restoring these arguments
+ __ set(JavaThread::popframe_force_deopt_reexecution_bit, Gtmp1);
+ Address popframe_condition_addr(G2_thread, JavaThread::popframe_condition_offset());
+ __ st(Gtmp1, popframe_condition_addr);
+
+ // Return from the current method
+ // The caller's SP was adjusted upon method entry to accomodate
+ // the callee's non-argument locals. Undo that adjustment.
+ __ ret();
+ __ delayed()->restore(I5_savedSP, G0, SP);
+
+ __ bind(caller_not_deoptimized);
+ }
+
+ // Clear the popframe condition flag
+ __ stw(G0 /* popframe_inactive */, popframe_condition_addr);
+
+ // Get out of the current method (how this is done depends on the particular compiler calling
+ // convention that the interpreter currently follows)
+ // The caller's SP was adjusted upon method entry to accomodate
+ // the callee's non-argument locals. Undo that adjustment.
+ __ restore(I5_savedSP, G0, SP);
+ // The method data pointer was incremented already during
+ // call profiling. We have to restore the mdp for the current bcp.
+ if (ProfileInterpreter) {
+ __ set_method_data_pointer_for_bcp();
+ }
+
+#if INCLUDE_JVMTI
+ {
+ Label L_done;
+
+ __ ldub(Address(Lbcp, 0), G1_scratch); // Load current bytecode
+ __ cmp_and_br_short(G1_scratch, Bytecodes::_invokestatic, Assembler::notEqual, Assembler::pn, L_done);
+
+ // The member name argument must be restored if _invokestatic is re-executed after a PopFrame call.
+ // Detect such a case in the InterpreterRuntime function and return the member name argument, or NULL.
+
+ __ call_VM(G1_scratch, CAST_FROM_FN_PTR(address, InterpreterRuntime::member_name_arg_or_null), I0, Lmethod, Lbcp);
+
+ __ br_null(G1_scratch, false, Assembler::pn, L_done);
+ __ delayed()->nop();
+
+ __ st_ptr(G1_scratch, Lesp, wordSize);
+ __ bind(L_done);
+ }
+#endif // INCLUDE_JVMTI
+
+ // Resume bytecode interpretation at the current bcp
+ __ dispatch_next(vtos);
+ // end of JVMTI PopFrame support
+
+ Interpreter::_remove_activation_entry = __ pc();
+
+ // preserve exception over this code sequence (remove activation calls the vm, but oopmaps are not correct here)
+ __ pop_ptr(Oexception); // get exception
+
+ // Intel has the following comment:
+ //// remove the activation (without doing throws on illegalMonitorExceptions)
+ // They remove the activation without checking for bad monitor state.
+ // %%% We should make sure this is the right semantics before implementing.
+
+ __ set_vm_result(Oexception);
+ __ unlock_if_synchronized_method(vtos, /* throw_monitor_exception */ false);
+
+ __ notify_method_exit(false, vtos, InterpreterMacroAssembler::SkipNotifyJVMTI);
+
+ __ get_vm_result(Oexception);
+ __ verify_oop(Oexception);
+
+ const int return_reg_adjustment = frame::pc_return_offset;
+ Address issuing_pc_addr(I7, return_reg_adjustment);
+
+ // We are done with this activation frame; find out where to go next.
+ // The continuation point will be an exception handler, which expects
+ // the following registers set up:
+ //
+ // Oexception: exception
+ // Oissuing_pc: the local call that threw exception
+ // Other On: garbage
+ // In/Ln: the contents of the caller's register window
+ //
+ // We do the required restore at the last possible moment, because we
+ // need to preserve some state across a runtime call.
+ // (Remember that the caller activation is unknown--it might not be
+ // interpreted, so things like Lscratch are useless in the caller.)
+
+ // Although the Intel version uses call_C, we can use the more
+ // compact call_VM. (The only real difference on SPARC is a
+ // harmlessly ignored [re]set_last_Java_frame, compared with
+ // the Intel code which lacks this.)
+ __ mov(Oexception, Oexception ->after_save()); // get exception in I0 so it will be on O0 after restore
+ __ add(issuing_pc_addr, Oissuing_pc->after_save()); // likewise set I1 to a value local to the caller
+ __ super_call_VM_leaf(L7_thread_cache,
+ CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address),
+ G2_thread, Oissuing_pc->after_save());
+
+ // The caller's SP was adjusted upon method entry to accomodate
+ // the callee's non-argument locals. Undo that adjustment.
+ __ JMP(O0, 0); // return exception handler in caller
+ __ delayed()->restore(I5_savedSP, G0, SP);
+
+ // (same old exception object is already in Oexception; see above)
+ // Note that an "issuing PC" is actually the next PC after the call
+}
+
+
+//
+// JVMTI ForceEarlyReturn support
+//
+
+address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) {
+ address entry = __ pc();
+
+ __ empty_expression_stack();
+ __ load_earlyret_value(state);
+
+ __ ld_ptr(G2_thread, JavaThread::jvmti_thread_state_offset(), G3_scratch);
+ Address cond_addr(G3_scratch, JvmtiThreadState::earlyret_state_offset());
+
+ // Clear the earlyret state
+ __ stw(G0 /* JvmtiThreadState::earlyret_inactive */, cond_addr);
+
+ __ remove_activation(state,
+ /* throw_monitor_exception */ false,
+ /* install_monitor_exception */ false);
+
+ // The caller's SP was adjusted upon method entry to accomodate
+ // the callee's non-argument locals. Undo that adjustment.
+ __ ret(); // return to caller
+ __ delayed()->restore(I5_savedSP, G0, SP);
+
+ return entry;
+} // end of JVMTI ForceEarlyReturn support
+
+
+//------------------------------------------------------------------------------------------------------------------------
+// Helper for vtos entry point generation
+
+void TemplateInterpreterGenerator::set_vtos_entry_points(Template* t, address& bep, address& cep, address& sep, address& aep, address& iep, address& lep, address& fep, address& dep, address& vep) {
+ assert(t->is_valid() && t->tos_in() == vtos, "illegal template");
+ Label L;
+ aep = __ pc(); __ push_ptr(); __ ba_short(L);
+ fep = __ pc(); __ push_f(); __ ba_short(L);
+ dep = __ pc(); __ push_d(); __ ba_short(L);
+ lep = __ pc(); __ push_l(); __ ba_short(L);
+ iep = __ pc(); __ push_i();
+ bep = cep = sep = iep; // there aren't any
+ vep = __ pc(); __ bind(L); // fall through
+ generate_and_dispatch(t);
+}
+
+// --------------------------------------------------------------------------------
+
+
+InterpreterGenerator::InterpreterGenerator(StubQueue* code)
+ : TemplateInterpreterGenerator(code) {
+ generate_all(); // down here so it can be "virtual"
+}
+
+// --------------------------------------------------------------------------------
+
+// Non-product code
+#ifndef PRODUCT
+address TemplateInterpreterGenerator::generate_trace_code(TosState state) {
+ address entry = __ pc();
+
+ __ push(state);
+ __ mov(O7, Lscratch); // protect return address within interpreter
+
+ // Pass a 0 (not used in sparc) and the top of stack to the bytecode tracer
+ __ mov( Otos_l2, G3_scratch );
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), G0, Otos_l1, G3_scratch);
+ __ mov(Lscratch, O7); // restore return address
+ __ pop(state);
+ __ retl();
+ __ delayed()->nop();
+
+ return entry;
+}
+
+
+// helpers for generate_and_dispatch
+
+void TemplateInterpreterGenerator::count_bytecode() {
+ __ inc_counter(&BytecodeCounter::_counter_value, G3_scratch, G4_scratch);
+}
+
+
+void TemplateInterpreterGenerator::histogram_bytecode(Template* t) {
+ __ inc_counter(&BytecodeHistogram::_counters[t->bytecode()], G3_scratch, G4_scratch);
+}
+
+
+void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) {
+ AddressLiteral index (&BytecodePairHistogram::_index);
+ AddressLiteral counters((address) &BytecodePairHistogram::_counters);
+
+ // get index, shift out old bytecode, bring in new bytecode, and store it
+ // _index = (_index >> log2_number_of_codes) |
+ // (bytecode << log2_number_of_codes);
+
+ __ load_contents(index, G4_scratch);
+ __ srl( G4_scratch, BytecodePairHistogram::log2_number_of_codes, G4_scratch );
+ __ set( ((int)t->bytecode()) << BytecodePairHistogram::log2_number_of_codes, G3_scratch );
+ __ or3( G3_scratch, G4_scratch, G4_scratch );
+ __ store_contents(G4_scratch, index, G3_scratch);
+
+ // bump bucket contents
+ // _counters[_index] ++;
+
+ __ set(counters, G3_scratch); // loads into G3_scratch
+ __ sll( G4_scratch, LogBytesPerWord, G4_scratch ); // Index is word address
+ __ add (G3_scratch, G4_scratch, G3_scratch); // Add in index
+ __ ld (G3_scratch, 0, G4_scratch);
+ __ inc (G4_scratch);
+ __ st (G4_scratch, 0, G3_scratch);
+}
+
+
+void TemplateInterpreterGenerator::trace_bytecode(Template* t) {
+ // Call a little run-time stub to avoid blow-up for each bytecode.
+ // The run-time runtime saves the right registers, depending on
+ // the tosca in-state for the given template.
+ address entry = Interpreter::trace_code(t->tos_in());
+ guarantee(entry != NULL, "entry must have been generated");
+ __ call(entry, relocInfo::none);
+ __ delayed()->nop();
+}
+
+
+void TemplateInterpreterGenerator::stop_interpreter_at() {
+ AddressLiteral counter(&BytecodeCounter::_counter_value);
+ __ load_contents(counter, G3_scratch);
+ AddressLiteral stop_at(&StopInterpreterAt);
+ __ load_ptr_contents(stop_at, G4_scratch);
+ __ cmp(G3_scratch, G4_scratch);
+ __ breakpoint_trap(Assembler::equal, Assembler::icc);
+}
+#endif // not PRODUCT
+#endif // !CC_INTERP
--- a/hotspot/src/cpu/sparc/vm/templateInterpreter_sparc.cpp Sat Dec 05 15:17:29 2015 +0100
+++ b/hotspot/src/cpu/sparc/vm/templateInterpreter_sparc.cpp Sat Dec 05 17:14:02 2015 +0000
@@ -23,1483 +23,39 @@
*/
#include "precompiled.hpp"
-#include "asm/macroAssembler.hpp"
-#include "interpreter/bytecodeHistogram.hpp"
#include "interpreter/interpreter.hpp"
#include "interpreter/interpreterGenerator.hpp"
-#include "interpreter/interpreterRuntime.hpp"
-#include "interpreter/interp_masm.hpp"
-#include "interpreter/templateTable.hpp"
-#include "oops/arrayOop.hpp"
-#include "oops/methodData.hpp"
+#include "oops/constMethod.hpp"
#include "oops/method.hpp"
-#include "oops/oop.inline.hpp"
-#include "prims/jvmtiExport.hpp"
-#include "prims/jvmtiThreadState.hpp"
#include "runtime/arguments.hpp"
-#include "runtime/deoptimization.hpp"
#include "runtime/frame.inline.hpp"
-#include "runtime/sharedRuntime.hpp"
-#include "runtime/stubRoutines.hpp"
#include "runtime/synchronizer.hpp"
-#include "runtime/timer.hpp"
-#include "runtime/vframeArray.hpp"
-#include "utilities/debug.hpp"
#include "utilities/macros.hpp"
-#ifndef CC_INTERP
-#ifndef FAST_DISPATCH
-#define FAST_DISPATCH 1
-#endif
-#undef FAST_DISPATCH
-
-
-// Generation of Interpreter
-//
-// The InterpreterGenerator generates the interpreter into Interpreter::_code.
-
-
-#define __ _masm->
-
-
-//----------------------------------------------------------------------------------------------------
-
-
-void InterpreterGenerator::save_native_result(void) {
- // result potentially in O0/O1: save it across calls
- const Address& l_tmp = InterpreterMacroAssembler::l_tmp;
-
- // result potentially in F0/F1: save it across calls
- const Address& d_tmp = InterpreterMacroAssembler::d_tmp;
-
- // save and restore any potential method result value around the unlocking operation
- __ stf(FloatRegisterImpl::D, F0, d_tmp);
-#ifdef _LP64
- __ stx(O0, l_tmp);
-#else
- __ std(O0, l_tmp);
-#endif
-}
-
-void InterpreterGenerator::restore_native_result(void) {
- const Address& l_tmp = InterpreterMacroAssembler::l_tmp;
- const Address& d_tmp = InterpreterMacroAssembler::d_tmp;
-
- // Restore any method result value
- __ ldf(FloatRegisterImpl::D, d_tmp, F0);
-#ifdef _LP64
- __ ldx(l_tmp, O0);
-#else
- __ ldd(l_tmp, O0);
-#endif
-}
-
-address TemplateInterpreterGenerator::generate_exception_handler_common(const char* name, const char* message, bool pass_oop) {
- assert(!pass_oop || message == NULL, "either oop or message but not both");
- address entry = __ pc();
- // expression stack must be empty before entering the VM if an exception happened
- __ empty_expression_stack();
- // load exception object
- __ set((intptr_t)name, G3_scratch);
- if (pass_oop) {
- __ call_VM(Oexception, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_klass_exception), G3_scratch, Otos_i);
- } else {
- __ set((intptr_t)message, G4_scratch);
- __ call_VM(Oexception, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), G3_scratch, G4_scratch);
- }
- // throw exception
- assert(Interpreter::throw_exception_entry() != NULL, "generate it first");
- AddressLiteral thrower(Interpreter::throw_exception_entry());
- __ jump_to(thrower, G3_scratch);
- __ delayed()->nop();
- return entry;
-}
-
-address TemplateInterpreterGenerator::generate_ClassCastException_handler() {
- address entry = __ pc();
- // expression stack must be empty before entering the VM if an exception
- // happened
- __ empty_expression_stack();
- // load exception object
- __ call_VM(Oexception,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::throw_ClassCastException),
- Otos_i);
- __ should_not_reach_here();
- return entry;
-}
-
-
-address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler(const char* name) {
- address entry = __ pc();
- // expression stack must be empty before entering the VM if an exception happened
- __ empty_expression_stack();
- // convention: expect aberrant index in register G3_scratch, then shuffle the
- // index to G4_scratch for the VM call
- __ mov(G3_scratch, G4_scratch);
- __ set((intptr_t)name, G3_scratch);
- __ call_VM(Oexception, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException), G3_scratch, G4_scratch);
- __ should_not_reach_here();
- return entry;
-}
-
-
-address TemplateInterpreterGenerator::generate_StackOverflowError_handler() {
- address entry = __ pc();
- // expression stack must be empty before entering the VM if an exception happened
- __ empty_expression_stack();
- __ call_VM(Oexception, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_StackOverflowError));
- __ should_not_reach_here();
- return entry;
-}
-
-
-address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step, size_t index_size) {
- address entry = __ pc();
-
- if (state == atos) {
- __ profile_return_type(O0, G3_scratch, G1_scratch);
- }
-
-#if !defined(_LP64) && defined(COMPILER2)
- // All return values are where we want them, except for Longs. C2 returns
- // longs in G1 in the 32-bit build whereas the interpreter wants them in O0/O1.
- // Since the interpreter will return longs in G1 and O0/O1 in the 32bit
- // build even if we are returning from interpreted we just do a little
- // stupid shuffing.
- // Note: I tried to make c2 return longs in O0/O1 and G1 so we wouldn't have to
- // do this here. Unfortunately if we did a rethrow we'd see an machepilog node
- // first which would move g1 -> O0/O1 and destroy the exception we were throwing.
-
- if (state == ltos) {
- __ srl (G1, 0, O1);
- __ srlx(G1, 32, O0);
- }
-#endif // !_LP64 && COMPILER2
-
- // The callee returns with the stack possibly adjusted by adapter transition
- // We remove that possible adjustment here.
- // All interpreter local registers are untouched. Any result is passed back
- // in the O0/O1 or float registers. Before continuing, the arguments must be
- // popped from the java expression stack; i.e., Lesp must be adjusted.
-
- __ mov(Llast_SP, SP); // Remove any adapter added stack space.
-
- const Register cache = G3_scratch;
- const Register index = G1_scratch;
- __ get_cache_and_index_at_bcp(cache, index, 1, index_size);
-
- const Register flags = cache;
- __ ld_ptr(cache, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::flags_offset(), flags);
- const Register parameter_size = flags;
- __ and3(flags, ConstantPoolCacheEntry::parameter_size_mask, parameter_size); // argument size in words
- __ sll(parameter_size, Interpreter::logStackElementSize, parameter_size); // each argument size in bytes
- __ add(Lesp, parameter_size, Lesp); // pop arguments
- __ dispatch_next(state, step);
-
- return entry;
-}
-
-
-address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, int step) {
- address entry = __ pc();
- __ get_constant_pool_cache(LcpoolCache); // load LcpoolCache
-#if INCLUDE_JVMCI
- // Check if we need to take lock at entry of synchronized method.
- if (UseJVMCICompiler) {
- Label L;
- Address pending_monitor_enter_addr(G2_thread, JavaThread::pending_monitorenter_offset());
- __ ldbool(pending_monitor_enter_addr, Gtemp); // Load if pending monitor enter
- __ cmp_and_br_short(Gtemp, G0, Assembler::equal, Assembler::pn, L);
- // Clear flag.
- __ stbool(G0, pending_monitor_enter_addr);
- // Take lock.
- lock_method();
- __ bind(L);
- }
-#endif
- { Label L;
- Address exception_addr(G2_thread, Thread::pending_exception_offset());
- __ ld_ptr(exception_addr, Gtemp); // Load pending exception.
- __ br_null_short(Gtemp, Assembler::pt, L);
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception));
- __ should_not_reach_here();
- __ bind(L);
- }
- __ dispatch_next(state, step);
- return entry;
-}
-
-// A result handler converts/unboxes a native call result into
-// a java interpreter/compiler result. The current frame is an
-// interpreter frame. The activation frame unwind code must be
-// consistent with that of TemplateTable::_return(...). In the
-// case of native methods, the caller's SP was not modified.
-address TemplateInterpreterGenerator::generate_result_handler_for(BasicType type) {
- address entry = __ pc();
- Register Itos_i = Otos_i ->after_save();
- Register Itos_l = Otos_l ->after_save();
- Register Itos_l1 = Otos_l1->after_save();
- Register Itos_l2 = Otos_l2->after_save();
- switch (type) {
- case T_BOOLEAN: __ subcc(G0, O0, G0); __ addc(G0, 0, Itos_i); break; // !0 => true; 0 => false
- case T_CHAR : __ sll(O0, 16, O0); __ srl(O0, 16, Itos_i); break; // cannot use and3, 0xFFFF too big as immediate value!
- case T_BYTE : __ sll(O0, 24, O0); __ sra(O0, 24, Itos_i); break;
- case T_SHORT : __ sll(O0, 16, O0); __ sra(O0, 16, Itos_i); break;
- case T_LONG :
-#ifndef _LP64
- __ mov(O1, Itos_l2); // move other half of long
-#endif // ifdef or no ifdef, fall through to the T_INT case
- case T_INT : __ mov(O0, Itos_i); break;
- case T_VOID : /* nothing to do */ break;
- case T_FLOAT : assert(F0 == Ftos_f, "fix this code" ); break;
- case T_DOUBLE : assert(F0 == Ftos_d, "fix this code" ); break;
- case T_OBJECT :
- __ ld_ptr(FP, (frame::interpreter_frame_oop_temp_offset*wordSize) + STACK_BIAS, Itos_i);
- __ verify_oop(Itos_i);
- break;
- default : ShouldNotReachHere();
- }
- __ ret(); // return from interpreter activation
- __ delayed()->restore(I5_savedSP, G0, SP); // remove interpreter frame
- NOT_PRODUCT(__ emit_int32(0);) // marker for disassembly
- return entry;
-}
-
-address TemplateInterpreterGenerator::generate_safept_entry_for(TosState state, address runtime_entry) {
- address entry = __ pc();
- __ push(state);
- __ call_VM(noreg, runtime_entry);
- __ dispatch_via(vtos, Interpreter::normal_table(vtos));
- return entry;
-}
-
-address TemplateInterpreterGenerator::generate_continuation_for(TosState state) {
- address entry = __ pc();
- __ dispatch_next(state);
- return entry;
-}
-
-//
-// Helpers for commoning out cases in the various type of method entries.
-//
-
-// increment invocation count & check for overflow
-//
-// Note: checking for negative value instead of overflow
-// so we have a 'sticky' overflow test
-//
-// Lmethod: method
-// ??: invocation counter
-//
-void InterpreterGenerator::generate_counter_incr(Label* overflow, Label* profile_method, Label* profile_method_continue) {
- // Note: In tiered we increment either counters in MethodCounters* or in
- // MDO depending if we're profiling or not.
- const Register G3_method_counters = G3_scratch;
- Label done;
-
- if (TieredCompilation) {
- const int increment = InvocationCounter::count_increment;
- Label no_mdo;
- if (ProfileInterpreter) {
- // If no method data exists, go to profile_continue.
- __ ld_ptr(Lmethod, Method::method_data_offset(), G4_scratch);
- __ br_null_short(G4_scratch, Assembler::pn, no_mdo);
- // Increment counter
- Address mdo_invocation_counter(G4_scratch,
- in_bytes(MethodData::invocation_counter_offset()) +
- in_bytes(InvocationCounter::counter_offset()));
- Address mask(G4_scratch, in_bytes(MethodData::invoke_mask_offset()));
- __ increment_mask_and_jump(mdo_invocation_counter, increment, mask,
- G3_scratch, Lscratch,
- Assembler::zero, overflow);
- __ ba_short(done);
- }
-
- // Increment counter in MethodCounters*
- __ bind(no_mdo);
- Address invocation_counter(G3_method_counters,
- in_bytes(MethodCounters::invocation_counter_offset()) +
- in_bytes(InvocationCounter::counter_offset()));
- __ get_method_counters(Lmethod, G3_method_counters, done);
- Address mask(G3_method_counters, in_bytes(MethodCounters::invoke_mask_offset()));
- __ increment_mask_and_jump(invocation_counter, increment, mask,
- G4_scratch, Lscratch,
- Assembler::zero, overflow);
- __ bind(done);
- } else { // not TieredCompilation
- // Update standard invocation counters
- __ get_method_counters(Lmethod, G3_method_counters, done);
- __ increment_invocation_counter(G3_method_counters, O0, G4_scratch);
- if (ProfileInterpreter) {
- Address interpreter_invocation_counter(G3_method_counters,
- in_bytes(MethodCounters::interpreter_invocation_counter_offset()));
- __ ld(interpreter_invocation_counter, G4_scratch);
- __ inc(G4_scratch);
- __ st(G4_scratch, interpreter_invocation_counter);
- }
-
- if (ProfileInterpreter && profile_method != NULL) {
- // Test to see if we should create a method data oop
- Address profile_limit(G3_method_counters, in_bytes(MethodCounters::interpreter_profile_limit_offset()));
- __ ld(profile_limit, G1_scratch);
- __ cmp_and_br_short(O0, G1_scratch, Assembler::lessUnsigned, Assembler::pn, *profile_method_continue);
-
- // if no method data exists, go to profile_method
- __ test_method_data_pointer(*profile_method);
- }
-
- Address invocation_limit(G3_method_counters, in_bytes(MethodCounters::interpreter_invocation_limit_offset()));
- __ ld(invocation_limit, G3_scratch);
- __ cmp(O0, G3_scratch);
- __ br(Assembler::greaterEqualUnsigned, false, Assembler::pn, *overflow); // Far distance
- __ delayed()->nop();
- __ bind(done);
- }
-
-}
-
-// Allocate monitor and lock method (asm interpreter)
-// ebx - Method*
-//
-void TemplateInterpreterGenerator::lock_method() {
- __ ld(Lmethod, in_bytes(Method::access_flags_offset()), O0); // Load access flags.
-
-#ifdef ASSERT
- { Label ok;
- __ btst(JVM_ACC_SYNCHRONIZED, O0);
- __ br( Assembler::notZero, false, Assembler::pt, ok);
- __ delayed()->nop();
- __ stop("method doesn't need synchronization");
- __ bind(ok);
- }
-#endif // ASSERT
-
- // get synchronization object to O0
- { Label done;
- const int mirror_offset = in_bytes(Klass::java_mirror_offset());
- __ btst(JVM_ACC_STATIC, O0);
- __ br( Assembler::zero, true, Assembler::pt, done);
- __ delayed()->ld_ptr(Llocals, Interpreter::local_offset_in_bytes(0), O0); // get receiver for not-static case
-
- __ ld_ptr( Lmethod, in_bytes(Method::const_offset()), O0);
- __ ld_ptr( O0, in_bytes(ConstMethod::constants_offset()), O0);
- __ ld_ptr( O0, ConstantPool::pool_holder_offset_in_bytes(), O0);
-
- // lock the mirror, not the Klass*
- __ ld_ptr( O0, mirror_offset, O0);
-
-#ifdef ASSERT
- __ tst(O0);
- __ breakpoint_trap(Assembler::zero, Assembler::ptr_cc);
-#endif // ASSERT
-
- __ bind(done);
+int AbstractInterpreter::BasicType_as_index(BasicType type) {
+ int i = 0;
+ switch (type) {
+ case T_BOOLEAN: i = 0; break;
+ case T_CHAR : i = 1; break;
+ case T_BYTE : i = 2; break;
+ case T_SHORT : i = 3; break;
+ case T_INT : i = 4; break;
+ case T_LONG : i = 5; break;
+ case T_VOID : i = 6; break;
+ case T_FLOAT : i = 7; break;
+ case T_DOUBLE : i = 8; break;
+ case T_OBJECT : i = 9; break;
+ case T_ARRAY : i = 9; break;
+ default : ShouldNotReachHere();
}
-
- __ add_monitor_to_stack(true, noreg, noreg); // allocate monitor elem
- __ st_ptr( O0, Lmonitors, BasicObjectLock::obj_offset_in_bytes()); // store object
- // __ untested("lock_object from method entry");
- __ lock_object(Lmonitors, O0);
-}
-
-
-void TemplateInterpreterGenerator::generate_stack_overflow_check(Register Rframe_size,
- Register Rscratch,
- Register Rscratch2) {
- const int page_size = os::vm_page_size();
- Label after_frame_check;
-
- assert_different_registers(Rframe_size, Rscratch, Rscratch2);
-
- __ set(page_size, Rscratch);
- __ cmp_and_br_short(Rframe_size, Rscratch, Assembler::lessEqual, Assembler::pt, after_frame_check);
-
- // get the stack base, and in debug, verify it is non-zero
- __ ld_ptr( G2_thread, Thread::stack_base_offset(), Rscratch );
-#ifdef ASSERT
- Label base_not_zero;
- __ br_notnull_short(Rscratch, Assembler::pn, base_not_zero);
- __ stop("stack base is zero in generate_stack_overflow_check");
- __ bind(base_not_zero);
-#endif
-
- // get the stack size, and in debug, verify it is non-zero
- assert( sizeof(size_t) == sizeof(intptr_t), "wrong load size" );
- __ ld_ptr( G2_thread, Thread::stack_size_offset(), Rscratch2 );
-#ifdef ASSERT
- Label size_not_zero;
- __ br_notnull_short(Rscratch2, Assembler::pn, size_not_zero);
- __ stop("stack size is zero in generate_stack_overflow_check");
- __ bind(size_not_zero);
-#endif
-
- // compute the beginning of the protected zone minus the requested frame size
- __ sub( Rscratch, Rscratch2, Rscratch );
- __ set( (StackRedPages+StackYellowPages) * page_size, Rscratch2 );
- __ add( Rscratch, Rscratch2, Rscratch );
-
- // Add in the size of the frame (which is the same as subtracting it from the
- // SP, which would take another register
- __ add( Rscratch, Rframe_size, Rscratch );
-
- // the frame is greater than one page in size, so check against
- // the bottom of the stack
- __ cmp_and_brx_short(SP, Rscratch, Assembler::greaterUnsigned, Assembler::pt, after_frame_check);
-
- // the stack will overflow, throw an exception
-
- // Note that SP is restored to sender's sp (in the delay slot). This
- // is necessary if the sender's frame is an extended compiled frame
- // (see gen_c2i_adapter()) and safer anyway in case of JSR292
- // adaptations.
-
- // Note also that the restored frame is not necessarily interpreted.
- // Use the shared runtime version of the StackOverflowError.
- assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "stub not yet generated");
- AddressLiteral stub(StubRoutines::throw_StackOverflowError_entry());
- __ jump_to(stub, Rscratch);
- __ delayed()->mov(O5_savedSP, SP);
-
- // if you get to here, then there is enough stack space
- __ bind( after_frame_check );
-}
-
-
-//
-// Generate a fixed interpreter frame. This is identical setup for interpreted
-// methods and for native methods hence the shared code.
-
-
-//----------------------------------------------------------------------------------------------------
-// Stack frame layout
-//
-// When control flow reaches any of the entry types for the interpreter
-// the following holds ->
-//
-// C2 Calling Conventions:
-//
-// The entry code below assumes that the following registers are set
-// when coming in:
-// G5_method: holds the Method* of the method to call
-// Lesp: points to the TOS of the callers expression stack
-// after having pushed all the parameters
-//
-// The entry code does the following to setup an interpreter frame
-// pop parameters from the callers stack by adjusting Lesp
-// set O0 to Lesp
-// compute X = (max_locals - num_parameters)
-// bump SP up by X to accomadate the extra locals
-// compute X = max_expression_stack
-// + vm_local_words
-// + 16 words of register save area
-// save frame doing a save sp, -X, sp growing towards lower addresses
-// set Lbcp, Lmethod, LcpoolCache
-// set Llocals to i0
-// set Lmonitors to FP - rounded_vm_local_words
-// set Lesp to Lmonitors - 4
-//
-// The frame has now been setup to do the rest of the entry code
-
-// Try this optimization: Most method entries could live in a
-// "one size fits all" stack frame without all the dynamic size
-// calculations. It might be profitable to do all this calculation
-// statically and approximately for "small enough" methods.
-
-//-----------------------------------------------------------------------------------------------
-
-// C1 Calling conventions
-//
-// Upon method entry, the following registers are setup:
-//
-// g2 G2_thread: current thread
-// g5 G5_method: method to activate
-// g4 Gargs : pointer to last argument
-//
-//
-// Stack:
-//
-// +---------------+ <--- sp
-// | |
-// : reg save area :
-// | |
-// +---------------+ <--- sp + 0x40
-// | |
-// : extra 7 slots : note: these slots are not really needed for the interpreter (fix later)
-// | |
-// +---------------+ <--- sp + 0x5c
-// | |
-// : free :
-// | |
-// +---------------+ <--- Gargs
-// | |
-// : arguments :
-// | |
-// +---------------+
-// | |
-//
-//
-//
-// AFTER FRAME HAS BEEN SETUP for method interpretation the stack looks like:
-//
-// +---------------+ <--- sp
-// | |
-// : reg save area :
-// | |
-// +---------------+ <--- sp + 0x40
-// | |
-// : extra 7 slots : note: these slots are not really needed for the interpreter (fix later)
-// | |
-// +---------------+ <--- sp + 0x5c
-// | |
-// : :
-// | | <--- Lesp
-// +---------------+ <--- Lmonitors (fp - 0x18)
-// | VM locals |
-// +---------------+ <--- fp
-// | |
-// : reg save area :
-// | |
-// +---------------+ <--- fp + 0x40
-// | |
-// : extra 7 slots : note: these slots are not really needed for the interpreter (fix later)
-// | |
-// +---------------+ <--- fp + 0x5c
-// | |
-// : free :
-// | |
-// +---------------+
-// | |
-// : nonarg locals :
-// | |
-// +---------------+
-// | |
-// : arguments :
-// | | <--- Llocals
-// +---------------+ <--- Gargs
-// | |
-
-void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) {
- //
- //
- // The entry code sets up a new interpreter frame in 4 steps:
- //
- // 1) Increase caller's SP by for the extra local space needed:
- // (check for overflow)
- // Efficient implementation of xload/xstore bytecodes requires
- // that arguments and non-argument locals are in a contigously
- // addressable memory block => non-argument locals must be
- // allocated in the caller's frame.
- //
- // 2) Create a new stack frame and register window:
- // The new stack frame must provide space for the standard
- // register save area, the maximum java expression stack size,
- // the monitor slots (0 slots initially), and some frame local
- // scratch locations.
- //
- // 3) The following interpreter activation registers must be setup:
- // Lesp : expression stack pointer
- // Lbcp : bytecode pointer
- // Lmethod : method
- // Llocals : locals pointer
- // Lmonitors : monitor pointer
- // LcpoolCache: constant pool cache
- //
- // 4) Initialize the non-argument locals if necessary:
- // Non-argument locals may need to be initialized to NULL
- // for GC to work. If the oop-map information is accurate
- // (in the absence of the JSR problem), no initialization
- // is necessary.
- //
- // (gri - 2/25/2000)
-
-
- int rounded_vm_local_words = round_to( frame::interpreter_frame_vm_local_words, WordsPerLong );
-
- const int extra_space =
- rounded_vm_local_words + // frame local scratch space
- Method::extra_stack_entries() + // extra stack for jsr 292
- frame::memory_parameter_word_sp_offset + // register save area
- (native_call ? frame::interpreter_frame_extra_outgoing_argument_words : 0);
-
- const Register Glocals_size = G3;
- const Register RconstMethod = Glocals_size;
- const Register Otmp1 = O3;
- const Register Otmp2 = O4;
- // Lscratch can't be used as a temporary because the call_stub uses
- // it to assert that the stack frame was setup correctly.
- const Address constMethod (G5_method, Method::const_offset());
- const Address size_of_parameters(RconstMethod, ConstMethod::size_of_parameters_offset());
-
- __ ld_ptr( constMethod, RconstMethod );
- __ lduh( size_of_parameters, Glocals_size);
-
- // Gargs points to first local + BytesPerWord
- // Set the saved SP after the register window save
- //
- assert_different_registers(Gargs, Glocals_size, Gframe_size, O5_savedSP);
- __ sll(Glocals_size, Interpreter::logStackElementSize, Otmp1);
- __ add(Gargs, Otmp1, Gargs);
-
- if (native_call) {
- __ calc_mem_param_words( Glocals_size, Gframe_size );
- __ add( Gframe_size, extra_space, Gframe_size);
- __ round_to( Gframe_size, WordsPerLong );
- __ sll( Gframe_size, LogBytesPerWord, Gframe_size );
- } else {
-
- //
- // Compute number of locals in method apart from incoming parameters
- //
- const Address size_of_locals (Otmp1, ConstMethod::size_of_locals_offset());
- __ ld_ptr( constMethod, Otmp1 );
- __ lduh( size_of_locals, Otmp1 );
- __ sub( Otmp1, Glocals_size, Glocals_size );
- __ round_to( Glocals_size, WordsPerLong );
- __ sll( Glocals_size, Interpreter::logStackElementSize, Glocals_size );
-
- // see if the frame is greater than one page in size. If so,
- // then we need to verify there is enough stack space remaining
- // Frame_size = (max_stack + extra_space) * BytesPerWord;
- __ ld_ptr( constMethod, Gframe_size );
- __ lduh( Gframe_size, in_bytes(ConstMethod::max_stack_offset()), Gframe_size );
- __ add( Gframe_size, extra_space, Gframe_size );
- __ round_to( Gframe_size, WordsPerLong );
- __ sll( Gframe_size, Interpreter::logStackElementSize, Gframe_size);
-
- // Add in java locals size for stack overflow check only
- __ add( Gframe_size, Glocals_size, Gframe_size );
-
- const Register Otmp2 = O4;
- assert_different_registers(Otmp1, Otmp2, O5_savedSP);
- generate_stack_overflow_check(Gframe_size, Otmp1, Otmp2);
-
- __ sub( Gframe_size, Glocals_size, Gframe_size);
-
- //
- // bump SP to accomodate the extra locals
- //
- __ sub( SP, Glocals_size, SP );
- }
-
- //
- // now set up a stack frame with the size computed above
- //
- __ neg( Gframe_size );
- __ save( SP, Gframe_size, SP );
-
- //
- // now set up all the local cache registers
- //
- // NOTE: At this point, Lbyte_code/Lscratch has been modified. Note
- // that all present references to Lbyte_code initialize the register
- // immediately before use
- if (native_call) {
- __ mov(G0, Lbcp);
- } else {
- __ ld_ptr(G5_method, Method::const_offset(), Lbcp);
- __ add(Lbcp, in_bytes(ConstMethod::codes_offset()), Lbcp);
- }
- __ mov( G5_method, Lmethod); // set Lmethod
- __ get_constant_pool_cache( LcpoolCache ); // set LcpoolCache
- __ sub(FP, rounded_vm_local_words * BytesPerWord, Lmonitors ); // set Lmonitors
-#ifdef _LP64
- __ add( Lmonitors, STACK_BIAS, Lmonitors ); // Account for 64 bit stack bias
-#endif
- __ sub(Lmonitors, BytesPerWord, Lesp); // set Lesp
-
- // setup interpreter activation registers
- __ sub(Gargs, BytesPerWord, Llocals); // set Llocals
-
- if (ProfileInterpreter) {
-#ifdef FAST_DISPATCH
- // FAST_DISPATCH and ProfileInterpreter are mutually exclusive since
- // they both use I2.
- assert(0, "FAST_DISPATCH and +ProfileInterpreter are mutually exclusive");
-#endif // FAST_DISPATCH
- __ set_method_data_pointer();
- }
-
+ assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, "index out of bounds");
+ return i;
}
-// Method entry for java.lang.ref.Reference.get.
-address InterpreterGenerator::generate_Reference_get_entry(void) {
-#if INCLUDE_ALL_GCS
- // Code: _aload_0, _getfield, _areturn
- // parameter size = 1
- //
- // The code that gets generated by this routine is split into 2 parts:
- // 1. The "intrinsified" code for G1 (or any SATB based GC),
- // 2. The slow path - which is an expansion of the regular method entry.
- //
- // Notes:-
- // * In the G1 code we do not check whether we need to block for
- // a safepoint. If G1 is enabled then we must execute the specialized
- // code for Reference.get (except when the Reference object is null)
- // so that we can log the value in the referent field with an SATB
- // update buffer.
- // If the code for the getfield template is modified so that the
- // G1 pre-barrier code is executed when the current method is
- // Reference.get() then going through the normal method entry
- // will be fine.
- // * The G1 code can, however, check the receiver object (the instance
- // of java.lang.Reference) and jump to the slow path if null. If the
- // Reference object is null then we obviously cannot fetch the referent
- // and so we don't need to call the G1 pre-barrier. Thus we can use the
- // regular method entry code to generate the NPE.
- //
- // This code is based on generate_accessor_enty.
-
- address entry = __ pc();
-
- const int referent_offset = java_lang_ref_Reference::referent_offset;
- guarantee(referent_offset > 0, "referent offset not initialized");
-
- if (UseG1GC) {
- Label slow_path;
-
- // In the G1 code we don't check if we need to reach a safepoint. We
- // continue and the thread will safepoint at the next bytecode dispatch.
-
- // Check if local 0 != NULL
- // If the receiver is null then it is OK to jump to the slow path.
- __ ld_ptr(Gargs, G0, Otos_i ); // get local 0
- // check if local 0 == NULL and go the slow path
- __ cmp_and_brx_short(Otos_i, 0, Assembler::equal, Assembler::pn, slow_path);
-
-
- // Load the value of the referent field.
- if (Assembler::is_simm13(referent_offset)) {
- __ load_heap_oop(Otos_i, referent_offset, Otos_i);
- } else {
- __ set(referent_offset, G3_scratch);
- __ load_heap_oop(Otos_i, G3_scratch, Otos_i);
- }
-
- // Generate the G1 pre-barrier code to log the value of
- // the referent field in an SATB buffer. Note with
- // these parameters the pre-barrier does not generate
- // the load of the previous value
-
- __ g1_write_barrier_pre(noreg /* obj */, noreg /* index */, 0 /* offset */,
- Otos_i /* pre_val */,
- G3_scratch /* tmp */,
- true /* preserve_o_regs */);
-
- // _areturn
- __ retl(); // return from leaf routine
- __ delayed()->mov(O5_savedSP, SP);
-
- // Generate regular method entry
- __ bind(slow_path);
- __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::zerolocals));
- return entry;
- }
-#endif // INCLUDE_ALL_GCS
-
- // If G1 is not enabled then attempt to go through the accessor entry point
- // Reference.get is an accessor
- return NULL;
-}
-
-/**
- * Method entry for static native methods:
- * int java.util.zip.CRC32.update(int crc, int b)
- */
-address InterpreterGenerator::generate_CRC32_update_entry() {
-
- if (UseCRC32Intrinsics) {
- address entry = __ pc();
-
- Label L_slow_path;
- // If we need a safepoint check, generate full interpreter entry.
- ExternalAddress state(SafepointSynchronize::address_of_state());
- __ set(ExternalAddress(SafepointSynchronize::address_of_state()), O2);
- __ set(SafepointSynchronize::_not_synchronized, O3);
- __ cmp_and_br_short(O2, O3, Assembler::notEqual, Assembler::pt, L_slow_path);
-
- // Load parameters
- const Register crc = O0; // initial crc
- const Register val = O1; // byte to update with
- const Register table = O2; // address of 256-entry lookup table
-
- __ ldub(Gargs, 3, val);
- __ lduw(Gargs, 8, crc);
-
- __ set(ExternalAddress(StubRoutines::crc_table_addr()), table);
-
- __ not1(crc); // ~crc
- __ clruwu(crc);
- __ update_byte_crc32(crc, val, table);
- __ not1(crc); // ~crc
-
- // result in O0
- __ retl();
- __ delayed()->nop();
-
- // generate a vanilla native entry as the slow path
- __ bind(L_slow_path);
- __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::native));
- return entry;
- }
- return NULL;
-}
-
-/**
- * Method entry for static native methods:
- * int java.util.zip.CRC32.updateBytes(int crc, byte[] b, int off, int len)
- * int java.util.zip.CRC32.updateByteBuffer(int crc, long buf, int off, int len)
- */
-address InterpreterGenerator::generate_CRC32_updateBytes_entry(AbstractInterpreter::MethodKind kind) {
-
- if (UseCRC32Intrinsics) {
- address entry = __ pc();
-
- Label L_slow_path;
- // If we need a safepoint check, generate full interpreter entry.
- ExternalAddress state(SafepointSynchronize::address_of_state());
- __ set(ExternalAddress(SafepointSynchronize::address_of_state()), O2);
- __ set(SafepointSynchronize::_not_synchronized, O3);
- __ cmp_and_br_short(O2, O3, Assembler::notEqual, Assembler::pt, L_slow_path);
-
- // Load parameters from the stack
- const Register crc = O0; // initial crc
- const Register buf = O1; // source java byte array address
- const Register len = O2; // len
- const Register offset = O3; // offset
-
- // Arguments are reversed on java expression stack
- // Calculate address of start element
- if (kind == Interpreter::java_util_zip_CRC32_updateByteBuffer) {
- __ lduw(Gargs, 0, len);
- __ lduw(Gargs, 8, offset);
- __ ldx( Gargs, 16, buf);
- __ lduw(Gargs, 32, crc);
- __ add(buf, offset, buf);
- } else {
- __ lduw(Gargs, 0, len);
- __ lduw(Gargs, 8, offset);
- __ ldx( Gargs, 16, buf);
- __ lduw(Gargs, 24, crc);
- __ add(buf, arrayOopDesc::base_offset_in_bytes(T_BYTE), buf); // account for the header size
- __ add(buf ,offset, buf);
- }
-
- // Call the crc32 kernel
- __ MacroAssembler::save_thread(L7_thread_cache);
- __ kernel_crc32(crc, buf, len, O3);
- __ MacroAssembler::restore_thread(L7_thread_cache);
-
- // result in O0
- __ retl();
- __ delayed()->nop();
-
- // generate a vanilla native entry as the slow path
- __ bind(L_slow_path);
- __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::native));
- return entry;
- }
- return NULL;
-}
-
-//
-// Interpreter stub for calling a native method. (asm interpreter)
-// This sets up a somewhat different looking stack for calling the native method
-// than the typical interpreter frame setup.
-//
-
-address InterpreterGenerator::generate_native_entry(bool synchronized) {
- address entry = __ pc();
-
- // the following temporary registers are used during frame creation
- const Register Gtmp1 = G3_scratch ;
- const Register Gtmp2 = G1_scratch;
- bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods;
-
- // make sure registers are different!
- assert_different_registers(G2_thread, G5_method, Gargs, Gtmp1, Gtmp2);
-
- const Address Laccess_flags(Lmethod, Method::access_flags_offset());
-
- const Register Glocals_size = G3;
- assert_different_registers(Glocals_size, G4_scratch, Gframe_size);
-
- // make sure method is native & not abstract
- // rethink these assertions - they can be simplified and shared (gri 2/25/2000)
-#ifdef ASSERT
- __ ld(G5_method, Method::access_flags_offset(), Gtmp1);
- {
- Label L;
- __ btst(JVM_ACC_NATIVE, Gtmp1);
- __ br(Assembler::notZero, false, Assembler::pt, L);
- __ delayed()->nop();
- __ stop("tried to execute non-native method as native");
- __ bind(L);
- }
- { Label L;
- __ btst(JVM_ACC_ABSTRACT, Gtmp1);
- __ br(Assembler::zero, false, Assembler::pt, L);
- __ delayed()->nop();
- __ stop("tried to execute abstract method as non-abstract");
- __ bind(L);
- }
-#endif // ASSERT
-
- // generate the code to allocate the interpreter stack frame
- generate_fixed_frame(true);
-
- //
- // No locals to initialize for native method
- //
-
- // this slot will be set later, we initialize it to null here just in
- // case we get a GC before the actual value is stored later
- __ st_ptr(G0, FP, (frame::interpreter_frame_oop_temp_offset * wordSize) + STACK_BIAS);
-
- const Address do_not_unlock_if_synchronized(G2_thread,
- JavaThread::do_not_unlock_if_synchronized_offset());
- // Since at this point in the method invocation the exception handler
- // would try to exit the monitor of synchronized methods which hasn't
- // been entered yet, we set the thread local variable
- // _do_not_unlock_if_synchronized to true. If any exception was thrown by
- // runtime, exception handling i.e. unlock_if_synchronized_method will
- // check this thread local flag.
- // This flag has two effects, one is to force an unwind in the topmost
- // interpreter frame and not perform an unlock while doing so.
-
- __ movbool(true, G3_scratch);
- __ stbool(G3_scratch, do_not_unlock_if_synchronized);
-
- // increment invocation counter and check for overflow
- //
- // Note: checking for negative value instead of overflow
- // so we have a 'sticky' overflow test (may be of
- // importance as soon as we have true MT/MP)
- Label invocation_counter_overflow;
- Label Lcontinue;
- if (inc_counter) {
- generate_counter_incr(&invocation_counter_overflow, NULL, NULL);
-
- }
- __ bind(Lcontinue);
-
- bang_stack_shadow_pages(true);
-
- // reset the _do_not_unlock_if_synchronized flag
- __ stbool(G0, do_not_unlock_if_synchronized);
-
- // check for synchronized methods
- // Must happen AFTER invocation_counter check and stack overflow check,
- // so method is not locked if overflows.
-
- if (synchronized) {
- lock_method();
- } else {
-#ifdef ASSERT
- { Label ok;
- __ ld(Laccess_flags, O0);
- __ btst(JVM_ACC_SYNCHRONIZED, O0);
- __ br( Assembler::zero, false, Assembler::pt, ok);
- __ delayed()->nop();
- __ stop("method needs synchronization");
- __ bind(ok);
- }
-#endif // ASSERT
- }
-
-
- // start execution
- __ verify_thread();
-
- // JVMTI support
- __ notify_method_entry();
-
- // native call
-
- // (note that O0 is never an oop--at most it is a handle)
- // It is important not to smash any handles created by this call,
- // until any oop handle in O0 is dereferenced.
-
- // (note that the space for outgoing params is preallocated)
-
- // get signature handler
- { Label L;
- Address signature_handler(Lmethod, Method::signature_handler_offset());
- __ ld_ptr(signature_handler, G3_scratch);
- __ br_notnull_short(G3_scratch, Assembler::pt, L);
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), Lmethod);
- __ ld_ptr(signature_handler, G3_scratch);
- __ bind(L);
- }
-
- // Push a new frame so that the args will really be stored in
- // Copy a few locals across so the new frame has the variables
- // we need but these values will be dead at the jni call and
- // therefore not gc volatile like the values in the current
- // frame (Lmethod in particular)
-
- // Flush the method pointer to the register save area
- __ st_ptr(Lmethod, SP, (Lmethod->sp_offset_in_saved_window() * wordSize) + STACK_BIAS);
- __ mov(Llocals, O1);
-
- // calculate where the mirror handle body is allocated in the interpreter frame:
- __ add(FP, (frame::interpreter_frame_oop_temp_offset * wordSize) + STACK_BIAS, O2);
-
- // Calculate current frame size
- __ sub(SP, FP, O3); // Calculate negative of current frame size
- __ save(SP, O3, SP); // Allocate an identical sized frame
-
- // Note I7 has leftover trash. Slow signature handler will fill it in
- // should we get there. Normal jni call will set reasonable last_Java_pc
- // below (and fix I7 so the stack trace doesn't have a meaningless frame
- // in it).
-
- // Load interpreter frame's Lmethod into same register here
-
- __ ld_ptr(FP, (Lmethod->sp_offset_in_saved_window() * wordSize) + STACK_BIAS, Lmethod);
-
- __ mov(I1, Llocals);
- __ mov(I2, Lscratch2); // save the address of the mirror
-
-
- // ONLY Lmethod and Llocals are valid here!
-
- // call signature handler, It will move the arg properly since Llocals in current frame
- // matches that in outer frame
-
- __ callr(G3_scratch, 0);
- __ delayed()->nop();
-
- // Result handler is in Lscratch
-
- // Reload interpreter frame's Lmethod since slow signature handler may block
- __ ld_ptr(FP, (Lmethod->sp_offset_in_saved_window() * wordSize) + STACK_BIAS, Lmethod);
-
- { Label not_static;
-
- __ ld(Laccess_flags, O0);
- __ btst(JVM_ACC_STATIC, O0);
- __ br( Assembler::zero, false, Assembler::pt, not_static);
- // get native function entry point(O0 is a good temp until the very end)
- __ delayed()->ld_ptr(Lmethod, in_bytes(Method::native_function_offset()), O0);
- // for static methods insert the mirror argument
- const int mirror_offset = in_bytes(Klass::java_mirror_offset());
-
- __ ld_ptr(Lmethod, Method:: const_offset(), O1);
- __ ld_ptr(O1, ConstMethod::constants_offset(), O1);
- __ ld_ptr(O1, ConstantPool::pool_holder_offset_in_bytes(), O1);
- __ ld_ptr(O1, mirror_offset, O1);
-#ifdef ASSERT
- if (!PrintSignatureHandlers) // do not dirty the output with this
- { Label L;
- __ br_notnull_short(O1, Assembler::pt, L);
- __ stop("mirror is missing");
- __ bind(L);
- }
-#endif // ASSERT
- __ st_ptr(O1, Lscratch2, 0);
- __ mov(Lscratch2, O1);
- __ bind(not_static);
- }
-
- // At this point, arguments have been copied off of stack into
- // their JNI positions, which are O1..O5 and SP[68..].
- // Oops are boxed in-place on the stack, with handles copied to arguments.
- // The result handler is in Lscratch. O0 will shortly hold the JNIEnv*.
-
-#ifdef ASSERT
- { Label L;
- __ br_notnull_short(O0, Assembler::pt, L);
- __ stop("native entry point is missing");
- __ bind(L);
- }
-#endif // ASSERT
-
- //
- // setup the frame anchor
- //
- // The scavenge function only needs to know that the PC of this frame is
- // in the interpreter method entry code, it doesn't need to know the exact
- // PC and hence we can use O7 which points to the return address from the
- // previous call in the code stream (signature handler function)
- //
- // The other trick is we set last_Java_sp to FP instead of the usual SP because
- // we have pushed the extra frame in order to protect the volatile register(s)
- // in that frame when we return from the jni call
- //
-
- __ set_last_Java_frame(FP, O7);
- __ mov(O7, I7); // make dummy interpreter frame look like one above,
- // not meaningless information that'll confuse me.
-
- // flush the windows now. We don't care about the current (protection) frame
- // only the outer frames
-
- __ flushw();
-
- // mark windows as flushed
- Address flags(G2_thread, JavaThread::frame_anchor_offset() + JavaFrameAnchor::flags_offset());
- __ set(JavaFrameAnchor::flushed, G3_scratch);
- __ st(G3_scratch, flags);
-
- // Transition from _thread_in_Java to _thread_in_native. We are already safepoint ready.
-
- Address thread_state(G2_thread, JavaThread::thread_state_offset());
-#ifdef ASSERT
- { Label L;
- __ ld(thread_state, G3_scratch);
- __ cmp_and_br_short(G3_scratch, _thread_in_Java, Assembler::equal, Assembler::pt, L);
- __ stop("Wrong thread state in native stub");
- __ bind(L);
- }
-#endif // ASSERT
- __ set(_thread_in_native, G3_scratch);
- __ st(G3_scratch, thread_state);
-
- // Call the jni method, using the delay slot to set the JNIEnv* argument.
- __ save_thread(L7_thread_cache); // save Gthread
- __ callr(O0, 0);
- __ delayed()->
- add(L7_thread_cache, in_bytes(JavaThread::jni_environment_offset()), O0);
-
- // Back from jni method Lmethod in this frame is DEAD, DEAD, DEAD
-
- __ restore_thread(L7_thread_cache); // restore G2_thread
- __ reinit_heapbase();
-
- // must we block?
-
- // Block, if necessary, before resuming in _thread_in_Java state.
- // In order for GC to work, don't clear the last_Java_sp until after blocking.
- { Label no_block;
- AddressLiteral sync_state(SafepointSynchronize::address_of_state());
-
- // Switch thread to "native transition" state before reading the synchronization state.
- // This additional state is necessary because reading and testing the synchronization
- // state is not atomic w.r.t. GC, as this scenario demonstrates:
- // Java thread A, in _thread_in_native state, loads _not_synchronized and is preempted.
- // VM thread changes sync state to synchronizing and suspends threads for GC.
- // Thread A is resumed to finish this native method, but doesn't block here since it
- // didn't see any synchronization is progress, and escapes.
- __ set(_thread_in_native_trans, G3_scratch);
- __ st(G3_scratch, thread_state);
- if(os::is_MP()) {
- if (UseMembar) {
- // Force this write out before the read below
- __ membar(Assembler::StoreLoad);
- } else {
- // Write serialization page so VM thread can do a pseudo remote membar.
- // We use the current thread pointer to calculate a thread specific
- // offset to write to within the page. This minimizes bus traffic
- // due to cache line collision.
- __ serialize_memory(G2_thread, G1_scratch, G3_scratch);
- }
- }
- __ load_contents(sync_state, G3_scratch);
- __ cmp(G3_scratch, SafepointSynchronize::_not_synchronized);
-
- Label L;
- __ br(Assembler::notEqual, false, Assembler::pn, L);
- __ delayed()->ld(G2_thread, JavaThread::suspend_flags_offset(), G3_scratch);
- __ cmp_and_br_short(G3_scratch, 0, Assembler::equal, Assembler::pt, no_block);
- __ bind(L);
-
- // Block. Save any potential method result value before the operation and
- // use a leaf call to leave the last_Java_frame setup undisturbed.
- save_native_result();
- __ call_VM_leaf(L7_thread_cache,
- CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans),
- G2_thread);
-
- // Restore any method result value
- restore_native_result();
- __ bind(no_block);
- }
-
- // Clear the frame anchor now
-
- __ reset_last_Java_frame();
-
- // Move the result handler address
- __ mov(Lscratch, G3_scratch);
- // return possible result to the outer frame
-#ifndef __LP64
- __ mov(O0, I0);
- __ restore(O1, G0, O1);
-#else
- __ restore(O0, G0, O0);
-#endif /* __LP64 */
-
- // Move result handler to expected register
- __ mov(G3_scratch, Lscratch);
-
- // Back in normal (native) interpreter frame. State is thread_in_native_trans
- // switch to thread_in_Java.
-
- __ set(_thread_in_Java, G3_scratch);
- __ st(G3_scratch, thread_state);
-
- // reset handle block
- __ ld_ptr(G2_thread, JavaThread::active_handles_offset(), G3_scratch);
- __ st(G0, G3_scratch, JNIHandleBlock::top_offset_in_bytes());
-
- // If we have an oop result store it where it will be safe for any further gc
- // until we return now that we've released the handle it might be protected by
-
- {
- Label no_oop, store_result;
-
- __ set((intptr_t)AbstractInterpreter::result_handler(T_OBJECT), G3_scratch);
- __ cmp_and_brx_short(G3_scratch, Lscratch, Assembler::notEqual, Assembler::pt, no_oop);
- __ addcc(G0, O0, O0);
- __ brx(Assembler::notZero, true, Assembler::pt, store_result); // if result is not NULL:
- __ delayed()->ld_ptr(O0, 0, O0); // unbox it
- __ mov(G0, O0);
-
- __ bind(store_result);
- // Store it where gc will look for it and result handler expects it.
- __ st_ptr(O0, FP, (frame::interpreter_frame_oop_temp_offset*wordSize) + STACK_BIAS);
-
- __ bind(no_oop);
-
- }
-
-
- // handle exceptions (exception handling will handle unlocking!)
- { Label L;
- Address exception_addr(G2_thread, Thread::pending_exception_offset());
- __ ld_ptr(exception_addr, Gtemp);
- __ br_null_short(Gtemp, Assembler::pt, L);
- // Note: This could be handled more efficiently since we know that the native
- // method doesn't have an exception handler. We could directly return
- // to the exception handler for the caller.
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception));
- __ should_not_reach_here();
- __ bind(L);
- }
-
- // JVMTI support (preserves thread register)
- __ notify_method_exit(true, ilgl, InterpreterMacroAssembler::NotifyJVMTI);
-
- if (synchronized) {
- // save and restore any potential method result value around the unlocking operation
- save_native_result();
-
- __ add( __ top_most_monitor(), O1);
- __ unlock_object(O1);
-
- restore_native_result();
- }
-
-#if defined(COMPILER2) && !defined(_LP64)
-
- // C2 expects long results in G1 we can't tell if we're returning to interpreted
- // or compiled so just be safe.
-
- __ sllx(O0, 32, G1); // Shift bits into high G1
- __ srl (O1, 0, O1); // Zero extend O1
- __ or3 (O1, G1, G1); // OR 64 bits into G1
-
-#endif /* COMPILER2 && !_LP64 */
-
- // dispose of return address and remove activation
-#ifdef ASSERT
- {
- Label ok;
- __ cmp_and_brx_short(I5_savedSP, FP, Assembler::greaterEqualUnsigned, Assembler::pt, ok);
- __ stop("bad I5_savedSP value");
- __ should_not_reach_here();
- __ bind(ok);
- }
-#endif
- if (TraceJumps) {
- // Move target to register that is recordable
- __ mov(Lscratch, G3_scratch);
- __ JMP(G3_scratch, 0);
- } else {
- __ jmp(Lscratch, 0);
- }
- __ delayed()->nop();
-
-
- if (inc_counter) {
- // handle invocation counter overflow
- __ bind(invocation_counter_overflow);
- generate_counter_overflow(Lcontinue);
- }
-
-
-
- return entry;
-}
-
-
-// Generic method entry to (asm) interpreter
-address InterpreterGenerator::generate_normal_entry(bool synchronized) {
- address entry = __ pc();
-
- bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods;
-
- // the following temporary registers are used during frame creation
- const Register Gtmp1 = G3_scratch ;
- const Register Gtmp2 = G1_scratch;
-
- // make sure registers are different!
- assert_different_registers(G2_thread, G5_method, Gargs, Gtmp1, Gtmp2);
-
- const Address constMethod (G5_method, Method::const_offset());
- // Seems like G5_method is live at the point this is used. So we could make this look consistent
- // and use in the asserts.
- const Address access_flags (Lmethod, Method::access_flags_offset());
-
- const Register Glocals_size = G3;
- assert_different_registers(Glocals_size, G4_scratch, Gframe_size);
-
- // make sure method is not native & not abstract
- // rethink these assertions - they can be simplified and shared (gri 2/25/2000)
-#ifdef ASSERT
- __ ld(G5_method, Method::access_flags_offset(), Gtmp1);
- {
- Label L;
- __ btst(JVM_ACC_NATIVE, Gtmp1);
- __ br(Assembler::zero, false, Assembler::pt, L);
- __ delayed()->nop();
- __ stop("tried to execute native method as non-native");
- __ bind(L);
- }
- { Label L;
- __ btst(JVM_ACC_ABSTRACT, Gtmp1);
- __ br(Assembler::zero, false, Assembler::pt, L);
- __ delayed()->nop();
- __ stop("tried to execute abstract method as non-abstract");
- __ bind(L);
- }
-#endif // ASSERT
-
- // generate the code to allocate the interpreter stack frame
-
- generate_fixed_frame(false);
-
-#ifdef FAST_DISPATCH
- __ set((intptr_t)Interpreter::dispatch_table(), IdispatchTables);
- // set bytecode dispatch table base
-#endif
-
- //
- // Code to initialize the extra (i.e. non-parm) locals
- //
- Register init_value = noreg; // will be G0 if we must clear locals
- // The way the code was setup before zerolocals was always true for vanilla java entries.
- // It could only be false for the specialized entries like accessor or empty which have
- // no extra locals so the testing was a waste of time and the extra locals were always
- // initialized. We removed this extra complication to already over complicated code.
-
- init_value = G0;
- Label clear_loop;
-
- const Register RconstMethod = O1;
- const Address size_of_parameters(RconstMethod, ConstMethod::size_of_parameters_offset());
- const Address size_of_locals (RconstMethod, ConstMethod::size_of_locals_offset());
-
- // NOTE: If you change the frame layout, this code will need to
- // be updated!
- __ ld_ptr( constMethod, RconstMethod );
- __ lduh( size_of_locals, O2 );
- __ lduh( size_of_parameters, O1 );
- __ sll( O2, Interpreter::logStackElementSize, O2);
- __ sll( O1, Interpreter::logStackElementSize, O1 );
- __ sub( Llocals, O2, O2 );
- __ sub( Llocals, O1, O1 );
-
- __ bind( clear_loop );
- __ inc( O2, wordSize );
-
- __ cmp( O2, O1 );
- __ brx( Assembler::lessEqualUnsigned, true, Assembler::pt, clear_loop );
- __ delayed()->st_ptr( init_value, O2, 0 );
-
- const Address do_not_unlock_if_synchronized(G2_thread,
- JavaThread::do_not_unlock_if_synchronized_offset());
- // Since at this point in the method invocation the exception handler
- // would try to exit the monitor of synchronized methods which hasn't
- // been entered yet, we set the thread local variable
- // _do_not_unlock_if_synchronized to true. If any exception was thrown by
- // runtime, exception handling i.e. unlock_if_synchronized_method will
- // check this thread local flag.
- __ movbool(true, G3_scratch);
- __ stbool(G3_scratch, do_not_unlock_if_synchronized);
-
- __ profile_parameters_type(G1_scratch, G3_scratch, G4_scratch, Lscratch);
- // increment invocation counter and check for overflow
- //
- // Note: checking for negative value instead of overflow
- // so we have a 'sticky' overflow test (may be of
- // importance as soon as we have true MT/MP)
- Label invocation_counter_overflow;
- Label profile_method;
- Label profile_method_continue;
- Label Lcontinue;
- if (inc_counter) {
- generate_counter_incr(&invocation_counter_overflow, &profile_method, &profile_method_continue);
- if (ProfileInterpreter) {
- __ bind(profile_method_continue);
- }
- }
- __ bind(Lcontinue);
-
- bang_stack_shadow_pages(false);
-
- // reset the _do_not_unlock_if_synchronized flag
- __ stbool(G0, do_not_unlock_if_synchronized);
-
- // check for synchronized methods
- // Must happen AFTER invocation_counter check and stack overflow check,
- // so method is not locked if overflows.
-
- if (synchronized) {
- lock_method();
- } else {
-#ifdef ASSERT
- { Label ok;
- __ ld(access_flags, O0);
- __ btst(JVM_ACC_SYNCHRONIZED, O0);
- __ br( Assembler::zero, false, Assembler::pt, ok);
- __ delayed()->nop();
- __ stop("method needs synchronization");
- __ bind(ok);
- }
-#endif // ASSERT
- }
-
- // start execution
-
- __ verify_thread();
-
- // jvmti support
- __ notify_method_entry();
-
- // start executing instructions
- __ dispatch_next(vtos);
-
-
- if (inc_counter) {
- if (ProfileInterpreter) {
- // We have decided to profile this method in the interpreter
- __ bind(profile_method);
-
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method));
- __ set_method_data_pointer_for_bcp();
- __ ba_short(profile_method_continue);
- }
-
- // handle invocation counter overflow
- __ bind(invocation_counter_overflow);
- generate_counter_overflow(Lcontinue);
- }
-
-
- return entry;
+bool AbstractInterpreter::can_be_compiled(methodHandle m) {
+ // No special entry points that preclude compilation
+ return true;
}
static int size_activation_helper(int callee_extra_locals, int max_stack, int monitor_size) {
@@ -1747,332 +303,3 @@
assert(lo <= esp && esp < monitors, "esp in bounds");
#endif // ASSERT
}
-
-//----------------------------------------------------------------------------------------------------
-// Exceptions
-void TemplateInterpreterGenerator::generate_throw_exception() {
-
- // Entry point in previous activation (i.e., if the caller was interpreted)
- Interpreter::_rethrow_exception_entry = __ pc();
- // O0: exception
-
- // entry point for exceptions thrown within interpreter code
- Interpreter::_throw_exception_entry = __ pc();
- __ verify_thread();
- // expression stack is undefined here
- // O0: exception, i.e. Oexception
- // Lbcp: exception bcp
- __ verify_oop(Oexception);
-
-
- // expression stack must be empty before entering the VM in case of an exception
- __ empty_expression_stack();
- // find exception handler address and preserve exception oop
- // call C routine to find handler and jump to it
- __ call_VM(O1, CAST_FROM_FN_PTR(address, InterpreterRuntime::exception_handler_for_exception), Oexception);
- __ push_ptr(O1); // push exception for exception handler bytecodes
-
- __ JMP(O0, 0); // jump to exception handler (may be remove activation entry!)
- __ delayed()->nop();
-
-
- // if the exception is not handled in the current frame
- // the frame is removed and the exception is rethrown
- // (i.e. exception continuation is _rethrow_exception)
- //
- // Note: At this point the bci is still the bxi for the instruction which caused
- // the exception and the expression stack is empty. Thus, for any VM calls
- // at this point, GC will find a legal oop map (with empty expression stack).
-
- // in current activation
- // tos: exception
- // Lbcp: exception bcp
-
- //
- // JVMTI PopFrame support
- //
-
- Interpreter::_remove_activation_preserving_args_entry = __ pc();
- Address popframe_condition_addr(G2_thread, JavaThread::popframe_condition_offset());
- // Set the popframe_processing bit in popframe_condition indicating that we are
- // currently handling popframe, so that call_VMs that may happen later do not trigger new
- // popframe handling cycles.
-
- __ ld(popframe_condition_addr, G3_scratch);
- __ or3(G3_scratch, JavaThread::popframe_processing_bit, G3_scratch);
- __ stw(G3_scratch, popframe_condition_addr);
-
- // Empty the expression stack, as in normal exception handling
- __ empty_expression_stack();
- __ unlock_if_synchronized_method(vtos, /* throw_monitor_exception */ false, /* install_monitor_exception */ false);
-
- {
- // Check to see whether we are returning to a deoptimized frame.
- // (The PopFrame call ensures that the caller of the popped frame is
- // either interpreted or compiled and deoptimizes it if compiled.)
- // In this case, we can't call dispatch_next() after the frame is
- // popped, but instead must save the incoming arguments and restore
- // them after deoptimization has occurred.
- //
- // Note that we don't compare the return PC against the
- // deoptimization blob's unpack entry because of the presence of
- // adapter frames in C2.
- Label caller_not_deoptimized;
- __ call_VM_leaf(L7_thread_cache, CAST_FROM_FN_PTR(address, InterpreterRuntime::interpreter_contains), I7);
- __ br_notnull_short(O0, Assembler::pt, caller_not_deoptimized);
-
- const Register Gtmp1 = G3_scratch;
- const Register Gtmp2 = G1_scratch;
- const Register RconstMethod = Gtmp1;
- const Address constMethod(Lmethod, Method::const_offset());
- const Address size_of_parameters(RconstMethod, ConstMethod::size_of_parameters_offset());
-
- // Compute size of arguments for saving when returning to deoptimized caller
- __ ld_ptr(constMethod, RconstMethod);
- __ lduh(size_of_parameters, Gtmp1);
- __ sll(Gtmp1, Interpreter::logStackElementSize, Gtmp1);
- __ sub(Llocals, Gtmp1, Gtmp2);
- __ add(Gtmp2, wordSize, Gtmp2);
- // Save these arguments
- __ call_VM_leaf(L7_thread_cache, CAST_FROM_FN_PTR(address, Deoptimization::popframe_preserve_args), G2_thread, Gtmp1, Gtmp2);
- // Inform deoptimization that it is responsible for restoring these arguments
- __ set(JavaThread::popframe_force_deopt_reexecution_bit, Gtmp1);
- Address popframe_condition_addr(G2_thread, JavaThread::popframe_condition_offset());
- __ st(Gtmp1, popframe_condition_addr);
-
- // Return from the current method
- // The caller's SP was adjusted upon method entry to accomodate
- // the callee's non-argument locals. Undo that adjustment.
- __ ret();
- __ delayed()->restore(I5_savedSP, G0, SP);
-
- __ bind(caller_not_deoptimized);
- }
-
- // Clear the popframe condition flag
- __ stw(G0 /* popframe_inactive */, popframe_condition_addr);
-
- // Get out of the current method (how this is done depends on the particular compiler calling
- // convention that the interpreter currently follows)
- // The caller's SP was adjusted upon method entry to accomodate
- // the callee's non-argument locals. Undo that adjustment.
- __ restore(I5_savedSP, G0, SP);
- // The method data pointer was incremented already during
- // call profiling. We have to restore the mdp for the current bcp.
- if (ProfileInterpreter) {
- __ set_method_data_pointer_for_bcp();
- }
-
-#if INCLUDE_JVMTI
- {
- Label L_done;
-
- __ ldub(Address(Lbcp, 0), G1_scratch); // Load current bytecode
- __ cmp_and_br_short(G1_scratch, Bytecodes::_invokestatic, Assembler::notEqual, Assembler::pn, L_done);
-
- // The member name argument must be restored if _invokestatic is re-executed after a PopFrame call.
- // Detect such a case in the InterpreterRuntime function and return the member name argument, or NULL.
-
- __ call_VM(G1_scratch, CAST_FROM_FN_PTR(address, InterpreterRuntime::member_name_arg_or_null), I0, Lmethod, Lbcp);
-
- __ br_null(G1_scratch, false, Assembler::pn, L_done);
- __ delayed()->nop();
-
- __ st_ptr(G1_scratch, Lesp, wordSize);
- __ bind(L_done);
- }
-#endif // INCLUDE_JVMTI
-
- // Resume bytecode interpretation at the current bcp
- __ dispatch_next(vtos);
- // end of JVMTI PopFrame support
-
- Interpreter::_remove_activation_entry = __ pc();
-
- // preserve exception over this code sequence (remove activation calls the vm, but oopmaps are not correct here)
- __ pop_ptr(Oexception); // get exception
-
- // Intel has the following comment:
- //// remove the activation (without doing throws on illegalMonitorExceptions)
- // They remove the activation without checking for bad monitor state.
- // %%% We should make sure this is the right semantics before implementing.
-
- __ set_vm_result(Oexception);
- __ unlock_if_synchronized_method(vtos, /* throw_monitor_exception */ false);
-
- __ notify_method_exit(false, vtos, InterpreterMacroAssembler::SkipNotifyJVMTI);
-
- __ get_vm_result(Oexception);
- __ verify_oop(Oexception);
-
- const int return_reg_adjustment = frame::pc_return_offset;
- Address issuing_pc_addr(I7, return_reg_adjustment);
-
- // We are done with this activation frame; find out where to go next.
- // The continuation point will be an exception handler, which expects
- // the following registers set up:
- //
- // Oexception: exception
- // Oissuing_pc: the local call that threw exception
- // Other On: garbage
- // In/Ln: the contents of the caller's register window
- //
- // We do the required restore at the last possible moment, because we
- // need to preserve some state across a runtime call.
- // (Remember that the caller activation is unknown--it might not be
- // interpreted, so things like Lscratch are useless in the caller.)
-
- // Although the Intel version uses call_C, we can use the more
- // compact call_VM. (The only real difference on SPARC is a
- // harmlessly ignored [re]set_last_Java_frame, compared with
- // the Intel code which lacks this.)
- __ mov(Oexception, Oexception ->after_save()); // get exception in I0 so it will be on O0 after restore
- __ add(issuing_pc_addr, Oissuing_pc->after_save()); // likewise set I1 to a value local to the caller
- __ super_call_VM_leaf(L7_thread_cache,
- CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address),
- G2_thread, Oissuing_pc->after_save());
-
- // The caller's SP was adjusted upon method entry to accomodate
- // the callee's non-argument locals. Undo that adjustment.
- __ JMP(O0, 0); // return exception handler in caller
- __ delayed()->restore(I5_savedSP, G0, SP);
-
- // (same old exception object is already in Oexception; see above)
- // Note that an "issuing PC" is actually the next PC after the call
-}
-
-
-//
-// JVMTI ForceEarlyReturn support
-//
-
-address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) {
- address entry = __ pc();
-
- __ empty_expression_stack();
- __ load_earlyret_value(state);
-
- __ ld_ptr(G2_thread, JavaThread::jvmti_thread_state_offset(), G3_scratch);
- Address cond_addr(G3_scratch, JvmtiThreadState::earlyret_state_offset());
-
- // Clear the earlyret state
- __ stw(G0 /* JvmtiThreadState::earlyret_inactive */, cond_addr);
-
- __ remove_activation(state,
- /* throw_monitor_exception */ false,
- /* install_monitor_exception */ false);
-
- // The caller's SP was adjusted upon method entry to accomodate
- // the callee's non-argument locals. Undo that adjustment.
- __ ret(); // return to caller
- __ delayed()->restore(I5_savedSP, G0, SP);
-
- return entry;
-} // end of JVMTI ForceEarlyReturn support
-
-
-//------------------------------------------------------------------------------------------------------------------------
-// Helper for vtos entry point generation
-
-void TemplateInterpreterGenerator::set_vtos_entry_points(Template* t, address& bep, address& cep, address& sep, address& aep, address& iep, address& lep, address& fep, address& dep, address& vep) {
- assert(t->is_valid() && t->tos_in() == vtos, "illegal template");
- Label L;
- aep = __ pc(); __ push_ptr(); __ ba_short(L);
- fep = __ pc(); __ push_f(); __ ba_short(L);
- dep = __ pc(); __ push_d(); __ ba_short(L);
- lep = __ pc(); __ push_l(); __ ba_short(L);
- iep = __ pc(); __ push_i();
- bep = cep = sep = iep; // there aren't any
- vep = __ pc(); __ bind(L); // fall through
- generate_and_dispatch(t);
-}
-
-// --------------------------------------------------------------------------------
-
-
-InterpreterGenerator::InterpreterGenerator(StubQueue* code)
- : TemplateInterpreterGenerator(code) {
- generate_all(); // down here so it can be "virtual"
-}
-
-// --------------------------------------------------------------------------------
-
-// Non-product code
-#ifndef PRODUCT
-address TemplateInterpreterGenerator::generate_trace_code(TosState state) {
- address entry = __ pc();
-
- __ push(state);
- __ mov(O7, Lscratch); // protect return address within interpreter
-
- // Pass a 0 (not used in sparc) and the top of stack to the bytecode tracer
- __ mov( Otos_l2, G3_scratch );
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), G0, Otos_l1, G3_scratch);
- __ mov(Lscratch, O7); // restore return address
- __ pop(state);
- __ retl();
- __ delayed()->nop();
-
- return entry;
-}
-
-
-// helpers for generate_and_dispatch
-
-void TemplateInterpreterGenerator::count_bytecode() {
- __ inc_counter(&BytecodeCounter::_counter_value, G3_scratch, G4_scratch);
-}
-
-
-void TemplateInterpreterGenerator::histogram_bytecode(Template* t) {
- __ inc_counter(&BytecodeHistogram::_counters[t->bytecode()], G3_scratch, G4_scratch);
-}
-
-
-void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) {
- AddressLiteral index (&BytecodePairHistogram::_index);
- AddressLiteral counters((address) &BytecodePairHistogram::_counters);
-
- // get index, shift out old bytecode, bring in new bytecode, and store it
- // _index = (_index >> log2_number_of_codes) |
- // (bytecode << log2_number_of_codes);
-
- __ load_contents(index, G4_scratch);
- __ srl( G4_scratch, BytecodePairHistogram::log2_number_of_codes, G4_scratch );
- __ set( ((int)t->bytecode()) << BytecodePairHistogram::log2_number_of_codes, G3_scratch );
- __ or3( G3_scratch, G4_scratch, G4_scratch );
- __ store_contents(G4_scratch, index, G3_scratch);
-
- // bump bucket contents
- // _counters[_index] ++;
-
- __ set(counters, G3_scratch); // loads into G3_scratch
- __ sll( G4_scratch, LogBytesPerWord, G4_scratch ); // Index is word address
- __ add (G3_scratch, G4_scratch, G3_scratch); // Add in index
- __ ld (G3_scratch, 0, G4_scratch);
- __ inc (G4_scratch);
- __ st (G4_scratch, 0, G3_scratch);
-}
-
-
-void TemplateInterpreterGenerator::trace_bytecode(Template* t) {
- // Call a little run-time stub to avoid blow-up for each bytecode.
- // The run-time runtime saves the right registers, depending on
- // the tosca in-state for the given template.
- address entry = Interpreter::trace_code(t->tos_in());
- guarantee(entry != NULL, "entry must have been generated");
- __ call(entry, relocInfo::none);
- __ delayed()->nop();
-}
-
-
-void TemplateInterpreterGenerator::stop_interpreter_at() {
- AddressLiteral counter(&BytecodeCounter::_counter_value);
- __ load_contents(counter, G3_scratch);
- AddressLiteral stop_at(&StopInterpreterAt);
- __ load_ptr_contents(stop_at, G4_scratch);
- __ cmp(G3_scratch, G4_scratch);
- __ breakpoint_trap(Assembler::equal, Assembler::icc);
-}
-#endif // not PRODUCT
-#endif // !CC_INTERP
--- a/hotspot/src/cpu/x86/vm/interp_masm_x86.hpp Sat Dec 05 15:17:29 2015 +0100
+++ b/hotspot/src/cpu/x86/vm/interp_masm_x86.hpp Sat Dec 05 17:14:02 2015 +0000
@@ -175,6 +175,7 @@
movptr(rsp, Address(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize));
// NULL last_sp until next java call
movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
+ NOT_LP64(empty_FPU_stack());
}
// Helpers for swap and dup
--- a/hotspot/src/cpu/x86/vm/interpreter_x86_32.cpp Sat Dec 05 15:17:29 2015 +0100
+++ b/hotspot/src/cpu/x86/vm/interpreter_x86_32.cpp Sat Dec 05 17:14:02 2015 +0000
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -38,7 +38,6 @@
#include "prims/jvmtiThreadState.hpp"
#include "prims/methodHandles.hpp"
#include "runtime/arguments.hpp"
-#include "runtime/deoptimization.hpp"
#include "runtime/frame.inline.hpp"
#include "runtime/sharedRuntime.hpp"
#include "runtime/stubRoutines.hpp"
@@ -184,20 +183,3 @@
return entry_point;
}
-
-
-void Deoptimization::unwind_callee_save_values(frame* f, vframeArray* vframe_array) {
-
- // This code is sort of the equivalent of C2IAdapter::setup_stack_frame back in
- // the days we had adapter frames. When we deoptimize a situation where a
- // compiled caller calls a compiled caller will have registers it expects
- // to survive the call to the callee. If we deoptimize the callee the only
- // way we can restore these registers is to have the oldest interpreter
- // frame that we create restore these values. That is what this routine
- // will accomplish.
-
- // At the moment we have modified c2 to not have any callee save registers
- // so this problem does not exist and this routine is just a place holder.
-
- assert(f->is_interpreted_frame(), "must be interpreted");
-}
--- a/hotspot/src/cpu/x86/vm/interpreter_x86_64.cpp Sat Dec 05 15:17:29 2015 +0100
+++ b/hotspot/src/cpu/x86/vm/interpreter_x86_64.cpp Sat Dec 05 17:14:02 2015 +0000
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -38,7 +38,6 @@
#include "prims/jvmtiThreadState.hpp"
#include "prims/methodHandles.hpp"
#include "runtime/arguments.hpp"
-#include "runtime/deoptimization.hpp"
#include "runtime/frame.inline.hpp"
#include "runtime/sharedRuntime.hpp"
#include "runtime/stubRoutines.hpp"
@@ -298,19 +297,3 @@
return entry_point;
}
-
-void Deoptimization::unwind_callee_save_values(frame* f, vframeArray* vframe_array) {
-
- // This code is sort of the equivalent of C2IAdapter::setup_stack_frame back in
- // the days we had adapter frames. When we deoptimize a situation where a
- // compiled caller calls a compiled caller will have registers it expects
- // to survive the call to the callee. If we deoptimize the callee the only
- // way we can restore these registers is to have the oldest interpreter
- // frame that we create restore these values. That is what this routine
- // will accomplish.
-
- // At the moment we have modified c2 to not have any callee save registers
- // so this problem does not exist and this routine is just a place holder.
-
- assert(f->is_interpreted_frame(), "must be interpreted");
-}
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/cpu/x86/vm/templateInterpreterGenerator_x86.cpp Sat Dec 05 17:14:02 2015 +0000
@@ -0,0 +1,1874 @@
+/*
+ * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "asm/macroAssembler.hpp"
+#include "interpreter/bytecodeHistogram.hpp"
+#include "interpreter/interpreter.hpp"
+#include "interpreter/interpreterGenerator.hpp"
+#include "interpreter/interpreterRuntime.hpp"
+#include "interpreter/interp_masm.hpp"
+#include "interpreter/templateTable.hpp"
+#include "oops/arrayOop.hpp"
+#include "oops/methodData.hpp"
+#include "oops/method.hpp"
+#include "oops/oop.inline.hpp"
+#include "prims/jvmtiExport.hpp"
+#include "prims/jvmtiThreadState.hpp"
+#include "runtime/arguments.hpp"
+#include "runtime/deoptimization.hpp"
+#include "runtime/frame.inline.hpp"
+#include "runtime/sharedRuntime.hpp"
+#include "runtime/stubRoutines.hpp"
+#include "runtime/synchronizer.hpp"
+#include "runtime/timer.hpp"
+#include "runtime/vframeArray.hpp"
+#include "utilities/debug.hpp"
+#include "utilities/macros.hpp"
+
+#define __ _masm->
+
+#ifndef CC_INTERP
+
+// Global Register Names
+static const Register rbcp = LP64_ONLY(r13) NOT_LP64(rsi);
+static const Register rlocals = LP64_ONLY(r14) NOT_LP64(rdi);
+
+const int method_offset = frame::interpreter_frame_method_offset * wordSize;
+const int bcp_offset = frame::interpreter_frame_bcp_offset * wordSize;
+const int locals_offset = frame::interpreter_frame_locals_offset * wordSize;
+
+//-----------------------------------------------------------------------------
+
+address TemplateInterpreterGenerator::generate_StackOverflowError_handler() {
+ address entry = __ pc();
+
+#ifdef ASSERT
+ {
+ Label L;
+ __ lea(rax, Address(rbp,
+ frame::interpreter_frame_monitor_block_top_offset *
+ wordSize));
+ __ cmpptr(rax, rsp); // rax = maximal rsp for current rbp (stack
+ // grows negative)
+ __ jcc(Assembler::aboveEqual, L); // check if frame is complete
+ __ stop ("interpreter frame not set up");
+ __ bind(L);
+ }
+#endif // ASSERT
+ // Restore bcp under the assumption that the current frame is still
+ // interpreted
+ __ restore_bcp();
+
+ // expression stack must be empty before entering the VM if an
+ // exception happened
+ __ empty_expression_stack();
+ // throw exception
+ __ call_VM(noreg,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::throw_StackOverflowError));
+ return entry;
+}
+
+address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler(
+ const char* name) {
+ address entry = __ pc();
+ // expression stack must be empty before entering the VM if an
+ // exception happened
+ __ empty_expression_stack();
+ // setup parameters
+ // ??? convention: expect aberrant index in register ebx
+ Register rarg = NOT_LP64(rax) LP64_ONLY(c_rarg1);
+ __ lea(rarg, ExternalAddress((address)name));
+ __ call_VM(noreg,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::
+ throw_ArrayIndexOutOfBoundsException),
+ rarg, rbx);
+ return entry;
+}
+
+address TemplateInterpreterGenerator::generate_ClassCastException_handler() {
+ address entry = __ pc();
+
+ // object is at TOS
+ Register rarg = NOT_LP64(rax) LP64_ONLY(c_rarg1);
+ __ pop(rarg);
+
+ // expression stack must be empty before entering the VM if an
+ // exception happened
+ __ empty_expression_stack();
+
+ __ call_VM(noreg,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::
+ throw_ClassCastException),
+ rarg);
+ return entry;
+}
+
+address TemplateInterpreterGenerator::generate_exception_handler_common(
+ const char* name, const char* message, bool pass_oop) {
+ assert(!pass_oop || message == NULL, "either oop or message but not both");
+ address entry = __ pc();
+
+ Register rarg = NOT_LP64(rax) LP64_ONLY(c_rarg1);
+ Register rarg2 = NOT_LP64(rbx) LP64_ONLY(c_rarg2);
+
+ if (pass_oop) {
+ // object is at TOS
+ __ pop(rarg2);
+ }
+ // expression stack must be empty before entering the VM if an
+ // exception happened
+ __ empty_expression_stack();
+ // setup parameters
+ __ lea(rarg, ExternalAddress((address)name));
+ if (pass_oop) {
+ __ call_VM(rax, CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::
+ create_klass_exception),
+ rarg, rarg2);
+ } else {
+ // kind of lame ExternalAddress can't take NULL because
+ // external_word_Relocation will assert.
+ if (message != NULL) {
+ __ lea(rarg2, ExternalAddress((address)message));
+ } else {
+ __ movptr(rarg2, NULL_WORD);
+ }
+ __ call_VM(rax,
+ CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception),
+ rarg, rarg2);
+ }
+ // throw exception
+ __ jump(ExternalAddress(Interpreter::throw_exception_entry()));
+ return entry;
+}
+
+
+address TemplateInterpreterGenerator::generate_continuation_for(TosState state) {
+ address entry = __ pc();
+ // NULL last_sp until next java call
+ __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
+ __ dispatch_next(state);
+ return entry;
+}
+
+
+address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step, size_t index_size) {
+ address entry = __ pc();
+
+#ifndef _LP64
+#ifdef COMPILER2
+ // The FPU stack is clean if UseSSE >= 2 but must be cleaned in other cases
+ if ((state == ftos && UseSSE < 1) || (state == dtos && UseSSE < 2)) {
+ for (int i = 1; i < 8; i++) {
+ __ ffree(i);
+ }
+ } else if (UseSSE < 2) {
+ __ empty_FPU_stack();
+ }
+#endif // COMPILER2
+ if ((state == ftos && UseSSE < 1) || (state == dtos && UseSSE < 2)) {
+ __ MacroAssembler::verify_FPU(1, "generate_return_entry_for compiled");
+ } else {
+ __ MacroAssembler::verify_FPU(0, "generate_return_entry_for compiled");
+ }
+
+ if (state == ftos) {
+ __ MacroAssembler::verify_FPU(UseSSE >= 1 ? 0 : 1, "generate_return_entry_for in interpreter");
+ } else if (state == dtos) {
+ __ MacroAssembler::verify_FPU(UseSSE >= 2 ? 0 : 1, "generate_return_entry_for in interpreter");
+ }
+#endif // _LP64
+
+ // Restore stack bottom in case i2c adjusted stack
+ __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize));
+ // and NULL it as marker that esp is now tos until next java call
+ __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
+
+ __ restore_bcp();
+ __ restore_locals();
+
+ if (state == atos) {
+ Register mdp = rbx;
+ Register tmp = rcx;
+ __ profile_return_type(mdp, rax, tmp);
+ }
+
+ const Register cache = rbx;
+ const Register index = rcx;
+ __ get_cache_and_index_at_bcp(cache, index, 1, index_size);
+
+ const Register flags = cache;
+ __ movl(flags, Address(cache, index, Address::times_ptr, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::flags_offset()));
+ __ andl(flags, ConstantPoolCacheEntry::parameter_size_mask);
+ __ lea(rsp, Address(rsp, flags, Interpreter::stackElementScale()));
+ __ dispatch_next(state, step);
+
+ return entry;
+}
+
+
+address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, int step) {
+ address entry = __ pc();
+
+#ifndef _LP64
+ if (state == ftos) {
+ __ MacroAssembler::verify_FPU(UseSSE >= 1 ? 0 : 1, "generate_deopt_entry_for in interpreter");
+ } else if (state == dtos) {
+ __ MacroAssembler::verify_FPU(UseSSE >= 2 ? 0 : 1, "generate_deopt_entry_for in interpreter");
+ }
+#endif // _LP64
+
+ // NULL last_sp until next java call
+ __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
+ __ restore_bcp();
+ __ restore_locals();
+ const Register thread = NOT_LP64(rcx) LP64_ONLY(r15_thread);
+ NOT_LP64(__ get_thread(thread));
+#if INCLUDE_JVMCI
+ // Check if we need to take lock at entry of synchronized method.
+ if (UseJVMCICompiler) {
+ Label L;
+ __ cmpb(Address(thread, JavaThread::pending_monitorenter_offset()), 0);
+ __ jcc(Assembler::zero, L);
+ // Clear flag.
+ __ movb(Address(thread, JavaThread::pending_monitorenter_offset()), 0);
+ // Satisfy calling convention for lock_method().
+ __ get_method(rbx);
+ // Take lock.
+ lock_method();
+ __ bind(L);
+ }
+#endif
+ // handle exceptions
+ {
+ Label L;
+ __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD);
+ __ jcc(Assembler::zero, L);
+ __ call_VM(noreg,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::throw_pending_exception));
+ __ should_not_reach_here();
+ __ bind(L);
+ }
+ __ dispatch_next(state, step);
+ return entry;
+}
+
+address TemplateInterpreterGenerator::generate_result_handler_for(
+ BasicType type) {
+ address entry = __ pc();
+ switch (type) {
+ case T_BOOLEAN: __ c2bool(rax); break;
+#ifndef _LP64
+ case T_CHAR : __ andptr(rax, 0xFFFF); break;
+#else
+ case T_CHAR : __ movzwl(rax, rax); break;
+#endif // _LP64
+ case T_BYTE : __ sign_extend_byte(rax); break;
+ case T_SHORT : __ sign_extend_short(rax); break;
+ case T_INT : /* nothing to do */ break;
+ case T_LONG : /* nothing to do */ break;
+ case T_VOID : /* nothing to do */ break;
+#ifndef _LP64
+ case T_DOUBLE :
+ case T_FLOAT :
+ { const Register t = InterpreterRuntime::SignatureHandlerGenerator::temp();
+ __ pop(t); // remove return address first
+ // Must return a result for interpreter or compiler. In SSE
+ // mode, results are returned in xmm0 and the FPU stack must
+ // be empty.
+ if (type == T_FLOAT && UseSSE >= 1) {
+ // Load ST0
+ __ fld_d(Address(rsp, 0));
+ // Store as float and empty fpu stack
+ __ fstp_s(Address(rsp, 0));
+ // and reload
+ __ movflt(xmm0, Address(rsp, 0));
+ } else if (type == T_DOUBLE && UseSSE >= 2 ) {
+ __ movdbl(xmm0, Address(rsp, 0));
+ } else {
+ // restore ST0
+ __ fld_d(Address(rsp, 0));
+ }
+ // and pop the temp
+ __ addptr(rsp, 2 * wordSize);
+ __ push(t); // restore return address
+ }
+ break;
+#else
+ case T_FLOAT : /* nothing to do */ break;
+ case T_DOUBLE : /* nothing to do */ break;
+#endif // _LP64
+
+ case T_OBJECT :
+ // retrieve result from frame
+ __ movptr(rax, Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize));
+ // and verify it
+ __ verify_oop(rax);
+ break;
+ default : ShouldNotReachHere();
+ }
+ __ ret(0); // return from result handler
+ return entry;
+}
+
+address TemplateInterpreterGenerator::generate_safept_entry_for(
+ TosState state,
+ address runtime_entry) {
+ address entry = __ pc();
+ __ push(state);
+ __ call_VM(noreg, runtime_entry);
+ __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos));
+ return entry;
+}
+
+
+
+// Helpers for commoning out cases in the various type of method entries.
+//
+
+
+// increment invocation count & check for overflow
+//
+// Note: checking for negative value instead of overflow
+// so we have a 'sticky' overflow test
+//
+// rbx: method
+// rcx: invocation counter
+//
+void InterpreterGenerator::generate_counter_incr(
+ Label* overflow,
+ Label* profile_method,
+ Label* profile_method_continue) {
+ Label done;
+ // Note: In tiered we increment either counters in Method* or in MDO depending if we're profiling or not.
+ if (TieredCompilation) {
+ int increment = InvocationCounter::count_increment;
+ Label no_mdo;
+ if (ProfileInterpreter) {
+ // Are we profiling?
+ __ movptr(rax, Address(rbx, Method::method_data_offset()));
+ __ testptr(rax, rax);
+ __ jccb(Assembler::zero, no_mdo);
+ // Increment counter in the MDO
+ const Address mdo_invocation_counter(rax, in_bytes(MethodData::invocation_counter_offset()) +
+ in_bytes(InvocationCounter::counter_offset()));
+ const Address mask(rax, in_bytes(MethodData::invoke_mask_offset()));
+ __ increment_mask_and_jump(mdo_invocation_counter, increment, mask, rcx, false, Assembler::zero, overflow);
+ __ jmp(done);
+ }
+ __ bind(no_mdo);
+ // Increment counter in MethodCounters
+ const Address invocation_counter(rax,
+ MethodCounters::invocation_counter_offset() +
+ InvocationCounter::counter_offset());
+ __ get_method_counters(rbx, rax, done);
+ const Address mask(rax, in_bytes(MethodCounters::invoke_mask_offset()));
+ __ increment_mask_and_jump(invocation_counter, increment, mask, rcx,
+ false, Assembler::zero, overflow);
+ __ bind(done);
+ } else { // not TieredCompilation
+ const Address backedge_counter(rax,
+ MethodCounters::backedge_counter_offset() +
+ InvocationCounter::counter_offset());
+ const Address invocation_counter(rax,
+ MethodCounters::invocation_counter_offset() +
+ InvocationCounter::counter_offset());
+
+ __ get_method_counters(rbx, rax, done);
+
+ if (ProfileInterpreter) {
+ __ incrementl(Address(rax,
+ MethodCounters::interpreter_invocation_counter_offset()));
+ }
+ // Update standard invocation counters
+ __ movl(rcx, invocation_counter);
+ __ incrementl(rcx, InvocationCounter::count_increment);
+ __ movl(invocation_counter, rcx); // save invocation count
+
+ __ movl(rax, backedge_counter); // load backedge counter
+ __ andl(rax, InvocationCounter::count_mask_value); // mask out the status bits
+
+ __ addl(rcx, rax); // add both counters
+
+ // profile_method is non-null only for interpreted method so
+ // profile_method != NULL == !native_call
+
+ if (ProfileInterpreter && profile_method != NULL) {
+ // Test to see if we should create a method data oop
+ __ movptr(rax, Address(rbx, Method::method_counters_offset()));
+ __ cmp32(rcx, Address(rax, in_bytes(MethodCounters::interpreter_profile_limit_offset())));
+ __ jcc(Assembler::less, *profile_method_continue);
+
+ // if no method data exists, go to profile_method
+ __ test_method_data_pointer(rax, *profile_method);
+ }
+
+ __ movptr(rax, Address(rbx, Method::method_counters_offset()));
+ __ cmp32(rcx, Address(rax, in_bytes(MethodCounters::interpreter_invocation_limit_offset())));
+ __ jcc(Assembler::aboveEqual, *overflow);
+ __ bind(done);
+ }
+}
+
+void InterpreterGenerator::generate_counter_overflow(Label* do_continue) {
+
+ // Asm interpreter on entry
+ // r14/rdi - locals
+ // r13/rsi - bcp
+ // rbx - method
+ // rdx - cpool --- DOES NOT APPEAR TO BE TRUE
+ // rbp - interpreter frame
+
+ // On return (i.e. jump to entry_point) [ back to invocation of interpreter ]
+ // Everything as it was on entry
+ // rdx is not restored. Doesn't appear to really be set.
+
+ // InterpreterRuntime::frequency_counter_overflow takes two
+ // arguments, the first (thread) is passed by call_VM, the second
+ // indicates if the counter overflow occurs at a backwards branch
+ // (NULL bcp). We pass zero for it. The call returns the address
+ // of the verified entry point for the method or NULL if the
+ // compilation did not complete (either went background or bailed
+ // out).
+ Register rarg = NOT_LP64(rax) LP64_ONLY(c_rarg1);
+ __ movl(rarg, 0);
+ __ call_VM(noreg,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::frequency_counter_overflow),
+ rarg);
+
+ __ movptr(rbx, Address(rbp, method_offset)); // restore Method*
+ // Preserve invariant that r13/r14 contain bcp/locals of sender frame
+ // and jump to the interpreted entry.
+ __ jmp(*do_continue, relocInfo::none);
+}
+
+// See if we've got enough room on the stack for locals plus overhead.
+// The expression stack grows down incrementally, so the normal guard
+// page mechanism will work for that.
+//
+// NOTE: Since the additional locals are also always pushed (wasn't
+// obvious in generate_fixed_frame) so the guard should work for them
+// too.
+//
+// Args:
+// rdx: number of additional locals this frame needs (what we must check)
+// rbx: Method*
+//
+// Kills:
+// rax
+void InterpreterGenerator::generate_stack_overflow_check(void) {
+
+ // monitor entry size: see picture of stack in frame_x86.hpp
+ const int entry_size = frame::interpreter_frame_monitor_size() * wordSize;
+
+ // total overhead size: entry_size + (saved rbp through expr stack
+ // bottom). be sure to change this if you add/subtract anything
+ // to/from the overhead area
+ const int overhead_size =
+ -(frame::interpreter_frame_initial_sp_offset * wordSize) + entry_size;
+
+ const int page_size = os::vm_page_size();
+
+ Label after_frame_check;
+
+ // see if the frame is greater than one page in size. If so,
+ // then we need to verify there is enough stack space remaining
+ // for the additional locals.
+ __ cmpl(rdx, (page_size - overhead_size) / Interpreter::stackElementSize);
+ __ jcc(Assembler::belowEqual, after_frame_check);
+
+ // compute rsp as if this were going to be the last frame on
+ // the stack before the red zone
+
+ Label after_frame_check_pop;
+ const Register thread = NOT_LP64(rsi) LP64_ONLY(r15_thread);
+#ifndef _LP64
+ __ push(thread);
+ __ get_thread(thread);
+#endif
+
+ const Address stack_base(thread, Thread::stack_base_offset());
+ const Address stack_size(thread, Thread::stack_size_offset());
+
+ // locals + overhead, in bytes
+ __ mov(rax, rdx);
+ __ shlptr(rax, Interpreter::logStackElementSize); // 2 slots per parameter.
+ __ addptr(rax, overhead_size);
+
+#ifdef ASSERT
+ Label stack_base_okay, stack_size_okay;
+ // verify that thread stack base is non-zero
+ __ cmpptr(stack_base, (int32_t)NULL_WORD);
+ __ jcc(Assembler::notEqual, stack_base_okay);
+ __ stop("stack base is zero");
+ __ bind(stack_base_okay);
+ // verify that thread stack size is non-zero
+ __ cmpptr(stack_size, 0);
+ __ jcc(Assembler::notEqual, stack_size_okay);
+ __ stop("stack size is zero");
+ __ bind(stack_size_okay);
+#endif
+
+ // Add stack base to locals and subtract stack size
+ __ addptr(rax, stack_base);
+ __ subptr(rax, stack_size);
+
+ // Use the maximum number of pages we might bang.
+ const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages :
+ (StackRedPages+StackYellowPages);
+
+ // add in the red and yellow zone sizes
+ __ addptr(rax, max_pages * page_size);
+
+ // check against the current stack bottom
+ __ cmpptr(rsp, rax);
+
+ __ jcc(Assembler::above, after_frame_check_pop);
+ NOT_LP64(__ pop(rsi)); // get saved bcp
+
+ // Restore sender's sp as SP. This is necessary if the sender's
+ // frame is an extended compiled frame (see gen_c2i_adapter())
+ // and safer anyway in case of JSR292 adaptations.
+
+ __ pop(rax); // return address must be moved if SP is changed
+ __ mov(rsp, rbcp);
+ __ push(rax);
+
+ // Note: the restored frame is not necessarily interpreted.
+ // Use the shared runtime version of the StackOverflowError.
+ assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "stub not yet generated");
+ __ jump(ExternalAddress(StubRoutines::throw_StackOverflowError_entry()));
+ // all done with frame size check
+ __ bind(after_frame_check_pop);
+ NOT_LP64(__ pop(rsi));
+
+ // all done with frame size check
+ __ bind(after_frame_check);
+}
+
+// Allocate monitor and lock method (asm interpreter)
+//
+// Args:
+// rbx: Method*
+// r14/rdi: locals
+//
+// Kills:
+// rax
+// c_rarg0, c_rarg1, c_rarg2, c_rarg3, ...(param regs)
+// rscratch1, rscratch2 (scratch regs)
+void TemplateInterpreterGenerator::lock_method() {
+ // synchronize method
+ const Address access_flags(rbx, Method::access_flags_offset());
+ const Address monitor_block_top(
+ rbp,
+ frame::interpreter_frame_monitor_block_top_offset * wordSize);
+ const int entry_size = frame::interpreter_frame_monitor_size() * wordSize;
+
+#ifdef ASSERT
+ {
+ Label L;
+ __ movl(rax, access_flags);
+ __ testl(rax, JVM_ACC_SYNCHRONIZED);
+ __ jcc(Assembler::notZero, L);
+ __ stop("method doesn't need synchronization");
+ __ bind(L);
+ }
+#endif // ASSERT
+
+ // get synchronization object
+ {
+ const int mirror_offset = in_bytes(Klass::java_mirror_offset());
+ Label done;
+ __ movl(rax, access_flags);
+ __ testl(rax, JVM_ACC_STATIC);
+ // get receiver (assume this is frequent case)
+ __ movptr(rax, Address(rlocals, Interpreter::local_offset_in_bytes(0)));
+ __ jcc(Assembler::zero, done);
+ __ movptr(rax, Address(rbx, Method::const_offset()));
+ __ movptr(rax, Address(rax, ConstMethod::constants_offset()));
+ __ movptr(rax, Address(rax,
+ ConstantPool::pool_holder_offset_in_bytes()));
+ __ movptr(rax, Address(rax, mirror_offset));
+
+#ifdef ASSERT
+ {
+ Label L;
+ __ testptr(rax, rax);
+ __ jcc(Assembler::notZero, L);
+ __ stop("synchronization object is NULL");
+ __ bind(L);
+ }
+#endif // ASSERT
+
+ __ bind(done);
+ }
+
+ // add space for monitor & lock
+ __ subptr(rsp, entry_size); // add space for a monitor entry
+ __ movptr(monitor_block_top, rsp); // set new monitor block top
+ // store object
+ __ movptr(Address(rsp, BasicObjectLock::obj_offset_in_bytes()), rax);
+ const Register lockreg = NOT_LP64(rdx) LP64_ONLY(c_rarg1);
+ __ movptr(lockreg, rsp); // object address
+ __ lock_object(lockreg);
+}
+
+// Generate a fixed interpreter frame. This is identical setup for
+// interpreted methods and for native methods hence the shared code.
+//
+// Args:
+// rax: return address
+// rbx: Method*
+// r14/rdi: pointer to locals
+// r13/rsi: sender sp
+// rdx: cp cache
+void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) {
+ // initialize fixed part of activation frame
+ __ push(rax); // save return address
+ __ enter(); // save old & set new rbp
+ __ push(rbcp); // set sender sp
+ __ push((int)NULL_WORD); // leave last_sp as null
+ __ movptr(rbcp, Address(rbx, Method::const_offset())); // get ConstMethod*
+ __ lea(rbcp, Address(rbcp, ConstMethod::codes_offset())); // get codebase
+ __ push(rbx); // save Method*
+ if (ProfileInterpreter) {
+ Label method_data_continue;
+ __ movptr(rdx, Address(rbx, in_bytes(Method::method_data_offset())));
+ __ testptr(rdx, rdx);
+ __ jcc(Assembler::zero, method_data_continue);
+ __ addptr(rdx, in_bytes(MethodData::data_offset()));
+ __ bind(method_data_continue);
+ __ push(rdx); // set the mdp (method data pointer)
+ } else {
+ __ push(0);
+ }
+
+ __ movptr(rdx, Address(rbx, Method::const_offset()));
+ __ movptr(rdx, Address(rdx, ConstMethod::constants_offset()));
+ __ movptr(rdx, Address(rdx, ConstantPool::cache_offset_in_bytes()));
+ __ push(rdx); // set constant pool cache
+ __ push(rlocals); // set locals pointer
+ if (native_call) {
+ __ push(0); // no bcp
+ } else {
+ __ push(rbcp); // set bcp
+ }
+ __ push(0); // reserve word for pointer to expression stack bottom
+ __ movptr(Address(rsp, 0), rsp); // set expression stack bottom
+}
+
+// End of helpers
+
+// Method entry for java.lang.ref.Reference.get.
+address InterpreterGenerator::generate_Reference_get_entry(void) {
+#if INCLUDE_ALL_GCS
+ // Code: _aload_0, _getfield, _areturn
+ // parameter size = 1
+ //
+ // The code that gets generated by this routine is split into 2 parts:
+ // 1. The "intrinsified" code for G1 (or any SATB based GC),
+ // 2. The slow path - which is an expansion of the regular method entry.
+ //
+ // Notes:-
+ // * In the G1 code we do not check whether we need to block for
+ // a safepoint. If G1 is enabled then we must execute the specialized
+ // code for Reference.get (except when the Reference object is null)
+ // so that we can log the value in the referent field with an SATB
+ // update buffer.
+ // If the code for the getfield template is modified so that the
+ // G1 pre-barrier code is executed when the current method is
+ // Reference.get() then going through the normal method entry
+ // will be fine.
+ // * The G1 code can, however, check the receiver object (the instance
+ // of java.lang.Reference) and jump to the slow path if null. If the
+ // Reference object is null then we obviously cannot fetch the referent
+ // and so we don't need to call the G1 pre-barrier. Thus we can use the
+ // regular method entry code to generate the NPE.
+ //
+ // rbx: Method*
+
+ // r13: senderSP must preserve for slow path, set SP to it on fast path
+
+ address entry = __ pc();
+
+ const int referent_offset = java_lang_ref_Reference::referent_offset;
+ guarantee(referent_offset > 0, "referent offset not initialized");
+
+ if (UseG1GC) {
+ Label slow_path;
+ // rbx: method
+
+ // Check if local 0 != NULL
+ // If the receiver is null then it is OK to jump to the slow path.
+ __ movptr(rax, Address(rsp, wordSize));
+
+ __ testptr(rax, rax);
+ __ jcc(Assembler::zero, slow_path);
+
+ // rax: local 0
+ // rbx: method (but can be used as scratch now)
+ // rdx: scratch
+ // rdi: scratch
+
+ // Preserve the sender sp in case the pre-barrier
+ // calls the runtime
+ NOT_LP64(__ push(rsi));
+
+ // Generate the G1 pre-barrier code to log the value of
+ // the referent field in an SATB buffer.
+
+ // Load the value of the referent field.
+ const Address field_address(rax, referent_offset);
+ __ load_heap_oop(rax, field_address);
+
+ const Register sender_sp = NOT_LP64(rsi) LP64_ONLY(r13);
+ const Register thread = NOT_LP64(rcx) LP64_ONLY(r15_thread);
+ NOT_LP64(__ get_thread(thread));
+
+ // Generate the G1 pre-barrier code to log the value of
+ // the referent field in an SATB buffer.
+ __ g1_write_barrier_pre(noreg /* obj */,
+ rax /* pre_val */,
+ thread /* thread */,
+ rbx /* tmp */,
+ true /* tosca_live */,
+ true /* expand_call */);
+
+ // _areturn
+ NOT_LP64(__ pop(rsi)); // get sender sp
+ __ pop(rdi); // get return address
+ __ mov(rsp, sender_sp); // set sp to sender sp
+ __ jmp(rdi);
+ __ ret(0);
+
+ // generate a vanilla interpreter entry as the slow path
+ __ bind(slow_path);
+ __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::zerolocals));
+ return entry;
+ }
+#endif // INCLUDE_ALL_GCS
+
+ // If G1 is not enabled then attempt to go through the accessor entry point
+ // Reference.get is an accessor
+ return NULL;
+}
+
+// Interpreter stub for calling a native method. (asm interpreter)
+// This sets up a somewhat different looking stack for calling the
+// native method than the typical interpreter frame setup.
+address InterpreterGenerator::generate_native_entry(bool synchronized) {
+ // determine code generation flags
+ bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods;
+
+ // rbx: Method*
+ // rbcp: sender sp
+
+ address entry_point = __ pc();
+
+ const Address constMethod (rbx, Method::const_offset());
+ const Address access_flags (rbx, Method::access_flags_offset());
+ const Address size_of_parameters(rcx, ConstMethod::
+ size_of_parameters_offset());
+
+
+ // get parameter size (always needed)
+ __ movptr(rcx, constMethod);
+ __ load_unsigned_short(rcx, size_of_parameters);
+
+ // native calls don't need the stack size check since they have no
+ // expression stack and the arguments are already on the stack and
+ // we only add a handful of words to the stack
+
+ // rbx: Method*
+ // rcx: size of parameters
+ // rbcp: sender sp
+ __ pop(rax); // get return address
+
+ // for natives the size of locals is zero
+
+ // compute beginning of parameters
+ __ lea(rlocals, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize));
+
+ // add 2 zero-initialized slots for native calls
+ // initialize result_handler slot
+ __ push((int) NULL_WORD);
+ // slot for oop temp
+ // (static native method holder mirror/jni oop result)
+ __ push((int) NULL_WORD);
+
+ // initialize fixed part of activation frame
+ generate_fixed_frame(true);
+
+ // make sure method is native & not abstract
+#ifdef ASSERT
+ __ movl(rax, access_flags);
+ {
+ Label L;
+ __ testl(rax, JVM_ACC_NATIVE);
+ __ jcc(Assembler::notZero, L);
+ __ stop("tried to execute non-native method as native");
+ __ bind(L);
+ }
+ {
+ Label L;
+ __ testl(rax, JVM_ACC_ABSTRACT);
+ __ jcc(Assembler::zero, L);
+ __ stop("tried to execute abstract method in interpreter");
+ __ bind(L);
+ }
+#endif
+
+ // Since at this point in the method invocation the exception handler
+ // would try to exit the monitor of synchronized methods which hasn't
+ // been entered yet, we set the thread local variable
+ // _do_not_unlock_if_synchronized to true. The remove_activation will
+ // check this flag.
+
+ const Register thread1 = NOT_LP64(rax) LP64_ONLY(r15_thread);
+ NOT_LP64(__ get_thread(thread1));
+ const Address do_not_unlock_if_synchronized(thread1,
+ in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()));
+ __ movbool(do_not_unlock_if_synchronized, true);
+
+ // increment invocation count & check for overflow
+ Label invocation_counter_overflow;
+ if (inc_counter) {
+ generate_counter_incr(&invocation_counter_overflow, NULL, NULL);
+ }
+
+ Label continue_after_compile;
+ __ bind(continue_after_compile);
+
+ bang_stack_shadow_pages(true);
+
+ // reset the _do_not_unlock_if_synchronized flag
+ NOT_LP64(__ get_thread(thread1));
+ __ movbool(do_not_unlock_if_synchronized, false);
+
+ // check for synchronized methods
+ // Must happen AFTER invocation_counter check and stack overflow check,
+ // so method is not locked if overflows.
+ if (synchronized) {
+ lock_method();
+ } else {
+ // no synchronization necessary
+#ifdef ASSERT
+ {
+ Label L;
+ __ movl(rax, access_flags);
+ __ testl(rax, JVM_ACC_SYNCHRONIZED);
+ __ jcc(Assembler::zero, L);
+ __ stop("method needs synchronization");
+ __ bind(L);
+ }
+#endif
+ }
+
+ // start execution
+#ifdef ASSERT
+ {
+ Label L;
+ const Address monitor_block_top(rbp,
+ frame::interpreter_frame_monitor_block_top_offset * wordSize);
+ __ movptr(rax, monitor_block_top);
+ __ cmpptr(rax, rsp);
+ __ jcc(Assembler::equal, L);
+ __ stop("broken stack frame setup in interpreter");
+ __ bind(L);
+ }
+#endif
+
+ // jvmti support
+ __ notify_method_entry();
+
+ // work registers
+ const Register method = rbx;
+ const Register thread = NOT_LP64(rdi) LP64_ONLY(r15_thread);
+ const Register t = NOT_LP64(rcx) LP64_ONLY(r11);
+
+ // allocate space for parameters
+ __ get_method(method);
+ __ movptr(t, Address(method, Method::const_offset()));
+ __ load_unsigned_short(t, Address(t, ConstMethod::size_of_parameters_offset()));
+
+#ifndef _LP64
+ __ shlptr(t, Interpreter::logStackElementSize);
+ __ addptr(t, 2*wordSize); // allocate two more slots for JNIEnv and possible mirror
+ __ subptr(rsp, t);
+ __ andptr(rsp, -(StackAlignmentInBytes)); // gcc needs 16 byte aligned stacks to do XMM intrinsics
+#else
+ __ shll(t, Interpreter::logStackElementSize);
+
+ __ subptr(rsp, t);
+ __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows
+ __ andptr(rsp, -16); // must be 16 byte boundary (see amd64 ABI)
+#endif // _LP64
+
+ // get signature handler
+ {
+ Label L;
+ __ movptr(t, Address(method, Method::signature_handler_offset()));
+ __ testptr(t, t);
+ __ jcc(Assembler::notZero, L);
+ __ call_VM(noreg,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::prepare_native_call),
+ method);
+ __ get_method(method);
+ __ movptr(t, Address(method, Method::signature_handler_offset()));
+ __ bind(L);
+ }
+
+ // call signature handler
+ assert(InterpreterRuntime::SignatureHandlerGenerator::from() == rlocals,
+ "adjust this code");
+ assert(InterpreterRuntime::SignatureHandlerGenerator::to() == rsp,
+ "adjust this code");
+ assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == NOT_LP64(t) LP64_ONLY(rscratch1),
+ "adjust this code");
+
+ // The generated handlers do not touch RBX (the method oop).
+ // However, large signatures cannot be cached and are generated
+ // each time here. The slow-path generator can do a GC on return,
+ // so we must reload it after the call.
+ __ call(t);
+ __ get_method(method); // slow path can do a GC, reload RBX
+
+
+ // result handler is in rax
+ // set result handler
+ __ movptr(Address(rbp,
+ (frame::interpreter_frame_result_handler_offset) * wordSize),
+ rax);
+
+ // pass mirror handle if static call
+ {
+ Label L;
+ const int mirror_offset = in_bytes(Klass::java_mirror_offset());
+ __ movl(t, Address(method, Method::access_flags_offset()));
+ __ testl(t, JVM_ACC_STATIC);
+ __ jcc(Assembler::zero, L);
+ // get mirror
+ __ movptr(t, Address(method, Method::const_offset()));
+ __ movptr(t, Address(t, ConstMethod::constants_offset()));
+ __ movptr(t, Address(t, ConstantPool::pool_holder_offset_in_bytes()));
+ __ movptr(t, Address(t, mirror_offset));
+ // copy mirror into activation frame
+ __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize),
+ t);
+ // pass handle to mirror
+#ifndef _LP64
+ __ lea(t, Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize));
+ __ movptr(Address(rsp, wordSize), t);
+#else
+ __ lea(c_rarg1,
+ Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize));
+#endif // _LP64
+ __ bind(L);
+ }
+
+ // get native function entry point
+ {
+ Label L;
+ __ movptr(rax, Address(method, Method::native_function_offset()));
+ ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry());
+ __ cmpptr(rax, unsatisfied.addr());
+ __ jcc(Assembler::notEqual, L);
+ __ call_VM(noreg,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::prepare_native_call),
+ method);
+ __ get_method(method);
+ __ movptr(rax, Address(method, Method::native_function_offset()));
+ __ bind(L);
+ }
+
+ // pass JNIEnv
+#ifndef _LP64
+ __ get_thread(thread);
+ __ lea(t, Address(thread, JavaThread::jni_environment_offset()));
+ __ movptr(Address(rsp, 0), t);
+
+ // set_last_Java_frame_before_call
+ // It is enough that the pc()
+ // points into the right code segment. It does not have to be the correct return pc.
+ __ set_last_Java_frame(thread, noreg, rbp, __ pc());
+#else
+ __ lea(c_rarg0, Address(r15_thread, JavaThread::jni_environment_offset()));
+
+ // It is enough that the pc() points into the right code
+ // segment. It does not have to be the correct return pc.
+ __ set_last_Java_frame(rsp, rbp, (address) __ pc());
+#endif // _LP64
+
+ // change thread state
+#ifdef ASSERT
+ {
+ Label L;
+ __ movl(t, Address(thread, JavaThread::thread_state_offset()));
+ __ cmpl(t, _thread_in_Java);
+ __ jcc(Assembler::equal, L);
+ __ stop("Wrong thread state in native stub");
+ __ bind(L);
+ }
+#endif
+
+ // Change state to native
+
+ __ movl(Address(thread, JavaThread::thread_state_offset()),
+ _thread_in_native);
+
+ // Call the native method.
+ __ call(rax);
+ // 32: result potentially in rdx:rax or ST0
+ // 64: result potentially in rax or xmm0
+
+ // Verify or restore cpu control state after JNI call
+ __ restore_cpu_control_state_after_jni();
+
+ // NOTE: The order of these pushes is known to frame::interpreter_frame_result
+ // in order to extract the result of a method call. If the order of these
+ // pushes change or anything else is added to the stack then the code in
+ // interpreter_frame_result must also change.
+
+#ifndef _LP64
+ // save potential result in ST(0) & rdx:rax
+ // (if result handler is the T_FLOAT or T_DOUBLE handler, result must be in ST0 -
+ // the check is necessary to avoid potential Intel FPU overflow problems by saving/restoring 'empty' FPU registers)
+ // It is safe to do this push because state is _thread_in_native and return address will be found
+ // via _last_native_pc and not via _last_jave_sp
+
+ // NOTE: the order of theses push(es) is known to frame::interpreter_frame_result.
+ // If the order changes or anything else is added to the stack the code in
+ // interpreter_frame_result will have to be changed.
+
+ { Label L;
+ Label push_double;
+ ExternalAddress float_handler(AbstractInterpreter::result_handler(T_FLOAT));
+ ExternalAddress double_handler(AbstractInterpreter::result_handler(T_DOUBLE));
+ __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize),
+ float_handler.addr());
+ __ jcc(Assembler::equal, push_double);
+ __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize),
+ double_handler.addr());
+ __ jcc(Assembler::notEqual, L);
+ __ bind(push_double);
+ __ push_d(); // FP values are returned using the FPU, so push FPU contents (even if UseSSE > 0).
+ __ bind(L);
+ }
+#else
+ __ push(dtos);
+#endif // _LP64
+
+ __ push(ltos);
+
+ // change thread state
+ NOT_LP64(__ get_thread(thread));
+ __ movl(Address(thread, JavaThread::thread_state_offset()),
+ _thread_in_native_trans);
+
+ if (os::is_MP()) {
+ if (UseMembar) {
+ // Force this write out before the read below
+ __ membar(Assembler::Membar_mask_bits(
+ Assembler::LoadLoad | Assembler::LoadStore |
+ Assembler::StoreLoad | Assembler::StoreStore));
+ } else {
+ // Write serialization page so VM thread can do a pseudo remote membar.
+ // We use the current thread pointer to calculate a thread specific
+ // offset to write to within the page. This minimizes bus traffic
+ // due to cache line collision.
+ __ serialize_memory(thread, rcx);
+ }
+ }
+
+#ifndef _LP64
+ if (AlwaysRestoreFPU) {
+ // Make sure the control word is correct.
+ __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std()));
+ }
+#endif // _LP64
+
+ // check for safepoint operation in progress and/or pending suspend requests
+ {
+ Label Continue;
+ __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()),
+ SafepointSynchronize::_not_synchronized);
+
+ Label L;
+ __ jcc(Assembler::notEqual, L);
+ __ cmpl(Address(thread, JavaThread::suspend_flags_offset()), 0);
+ __ jcc(Assembler::equal, Continue);
+ __ bind(L);
+
+ // Don't use call_VM as it will see a possible pending exception
+ // and forward it and never return here preventing us from
+ // clearing _last_native_pc down below. Also can't use
+ // call_VM_leaf either as it will check to see if r13 & r14 are
+ // preserved and correspond to the bcp/locals pointers. So we do a
+ // runtime call by hand.
+ //
+#ifndef _LP64
+ __ push(thread);
+ __ call(RuntimeAddress(CAST_FROM_FN_PTR(address,
+ JavaThread::check_special_condition_for_native_trans)));
+ __ increment(rsp, wordSize);
+ __ get_thread(thread);
+#else
+ __ mov(c_rarg0, r15_thread);
+ __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM)
+ __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows
+ __ andptr(rsp, -16); // align stack as required by ABI
+ __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans)));
+ __ mov(rsp, r12); // restore sp
+ __ reinit_heapbase();
+#endif // _LP64
+ __ bind(Continue);
+ }
+
+ // change thread state
+ __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_Java);
+
+ // reset_last_Java_frame
+ __ reset_last_Java_frame(thread, true, true);
+
+ // reset handle block
+ __ movptr(t, Address(thread, JavaThread::active_handles_offset()));
+ __ movl(Address(t, JNIHandleBlock::top_offset_in_bytes()), (int32_t)NULL_WORD);
+
+ // If result is an oop unbox and store it in frame where gc will see it
+ // and result handler will pick it up
+
+ {
+ Label no_oop, store_result;
+ __ lea(t, ExternalAddress(AbstractInterpreter::result_handler(T_OBJECT)));
+ __ cmpptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize));
+ __ jcc(Assembler::notEqual, no_oop);
+ // retrieve result
+ __ pop(ltos);
+ __ testptr(rax, rax);
+ __ jcc(Assembler::zero, store_result);
+ __ movptr(rax, Address(rax, 0));
+ __ bind(store_result);
+ __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize), rax);
+ // keep stack depth as expected by pushing oop which will eventually be discarded
+ __ push(ltos);
+ __ bind(no_oop);
+ }
+
+
+ {
+ Label no_reguard;
+ __ cmpl(Address(thread, JavaThread::stack_guard_state_offset()),
+ JavaThread::stack_guard_yellow_disabled);
+ __ jcc(Assembler::notEqual, no_reguard);
+
+ __ pusha(); // XXX only save smashed registers
+#ifndef _LP64
+ __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages)));
+ __ popa();
+#else
+ __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM)
+ __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows
+ __ andptr(rsp, -16); // align stack as required by ABI
+ __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages)));
+ __ mov(rsp, r12); // restore sp
+ __ popa(); // XXX only restore smashed registers
+ __ reinit_heapbase();
+#endif // _LP64
+
+ __ bind(no_reguard);
+ }
+
+
+ // The method register is junk from after the thread_in_native transition
+ // until here. Also can't call_VM until the bcp has been
+ // restored. Need bcp for throwing exception below so get it now.
+ __ get_method(method);
+
+ // restore to have legal interpreter frame, i.e., bci == 0 <=> code_base()
+ __ movptr(rbcp, Address(method, Method::const_offset())); // get ConstMethod*
+ __ lea(rbcp, Address(rbcp, ConstMethod::codes_offset())); // get codebase
+
+ // handle exceptions (exception handling will handle unlocking!)
+ {
+ Label L;
+ __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD);
+ __ jcc(Assembler::zero, L);
+ // Note: At some point we may want to unify this with the code
+ // used in call_VM_base(); i.e., we should use the
+ // StubRoutines::forward_exception code. For now this doesn't work
+ // here because the rsp is not correctly set at this point.
+ __ MacroAssembler::call_VM(noreg,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::throw_pending_exception));
+ __ should_not_reach_here();
+ __ bind(L);
+ }
+
+ // do unlocking if necessary
+ {
+ Label L;
+ __ movl(t, Address(method, Method::access_flags_offset()));
+ __ testl(t, JVM_ACC_SYNCHRONIZED);
+ __ jcc(Assembler::zero, L);
+ // the code below should be shared with interpreter macro
+ // assembler implementation
+ {
+ Label unlock;
+ // BasicObjectLock will be first in list, since this is a
+ // synchronized method. However, need to check that the object
+ // has not been unlocked by an explicit monitorexit bytecode.
+ const Address monitor(rbp,
+ (intptr_t)(frame::interpreter_frame_initial_sp_offset *
+ wordSize - (int)sizeof(BasicObjectLock)));
+
+ const Register regmon = NOT_LP64(rdx) LP64_ONLY(c_rarg1);
+
+ // monitor expect in c_rarg1 for slow unlock path
+ __ lea(regmon, monitor); // address of first monitor
+
+ __ movptr(t, Address(regmon, BasicObjectLock::obj_offset_in_bytes()));
+ __ testptr(t, t);
+ __ jcc(Assembler::notZero, unlock);
+
+ // Entry already unlocked, need to throw exception
+ __ MacroAssembler::call_VM(noreg,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::throw_illegal_monitor_state_exception));
+ __ should_not_reach_here();
+
+ __ bind(unlock);
+ __ unlock_object(regmon);
+ }
+ __ bind(L);
+ }
+
+ // jvmti support
+ // Note: This must happen _after_ handling/throwing any exceptions since
+ // the exception handler code notifies the runtime of method exits
+ // too. If this happens before, method entry/exit notifications are
+ // not properly paired (was bug - gri 11/22/99).
+ __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI);
+
+ // restore potential result in edx:eax, call result handler to
+ // restore potential result in ST0 & handle result
+
+ __ pop(ltos);
+ LP64_ONLY( __ pop(dtos));
+
+ __ movptr(t, Address(rbp,
+ (frame::interpreter_frame_result_handler_offset) * wordSize));
+ __ call(t);
+
+ // remove activation
+ __ movptr(t, Address(rbp,
+ frame::interpreter_frame_sender_sp_offset *
+ wordSize)); // get sender sp
+ __ leave(); // remove frame anchor
+ __ pop(rdi); // get return address
+ __ mov(rsp, t); // set sp to sender sp
+ __ jmp(rdi);
+
+ if (inc_counter) {
+ // Handle overflow of counter and compile method
+ __ bind(invocation_counter_overflow);
+ generate_counter_overflow(&continue_after_compile);
+ }
+
+ return entry_point;
+}
+
+//
+// Generic interpreted method entry to (asm) interpreter
+//
+address InterpreterGenerator::generate_normal_entry(bool synchronized) {
+ // determine code generation flags
+ bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods;
+
+ // ebx: Method*
+ // rbcp: sender sp
+ address entry_point = __ pc();
+
+ const Address constMethod(rbx, Method::const_offset());
+ const Address access_flags(rbx, Method::access_flags_offset());
+ const Address size_of_parameters(rdx,
+ ConstMethod::size_of_parameters_offset());
+ const Address size_of_locals(rdx, ConstMethod::size_of_locals_offset());
+
+
+ // get parameter size (always needed)
+ __ movptr(rdx, constMethod);
+ __ load_unsigned_short(rcx, size_of_parameters);
+
+ // rbx: Method*
+ // rcx: size of parameters
+ // rbcp: sender_sp (could differ from sp+wordSize if we were called via c2i )
+
+ __ load_unsigned_short(rdx, size_of_locals); // get size of locals in words
+ __ subl(rdx, rcx); // rdx = no. of additional locals
+
+ // YYY
+// __ incrementl(rdx);
+// __ andl(rdx, -2);
+
+ // see if we've got enough room on the stack for locals plus overhead.
+ generate_stack_overflow_check();
+
+ // get return address
+ __ pop(rax);
+
+ // compute beginning of parameters
+ __ lea(rlocals, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize));
+
+ // rdx - # of additional locals
+ // allocate space for locals
+ // explicitly initialize locals
+ {
+ Label exit, loop;
+ __ testl(rdx, rdx);
+ __ jcc(Assembler::lessEqual, exit); // do nothing if rdx <= 0
+ __ bind(loop);
+ __ push((int) NULL_WORD); // initialize local variables
+ __ decrementl(rdx); // until everything initialized
+ __ jcc(Assembler::greater, loop);
+ __ bind(exit);
+ }
+
+ // initialize fixed part of activation frame
+ generate_fixed_frame(false);
+
+ // make sure method is not native & not abstract
+#ifdef ASSERT
+ __ movl(rax, access_flags);
+ {
+ Label L;
+ __ testl(rax, JVM_ACC_NATIVE);
+ __ jcc(Assembler::zero, L);
+ __ stop("tried to execute native method as non-native");
+ __ bind(L);
+ }
+ {
+ Label L;
+ __ testl(rax, JVM_ACC_ABSTRACT);
+ __ jcc(Assembler::zero, L);
+ __ stop("tried to execute abstract method in interpreter");
+ __ bind(L);
+ }
+#endif
+
+ // Since at this point in the method invocation the exception
+ // handler would try to exit the monitor of synchronized methods
+ // which hasn't been entered yet, we set the thread local variable
+ // _do_not_unlock_if_synchronized to true. The remove_activation
+ // will check this flag.
+
+ const Register thread = NOT_LP64(rax) LP64_ONLY(r15_thread);
+ NOT_LP64(__ get_thread(thread));
+ const Address do_not_unlock_if_synchronized(thread,
+ in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()));
+ __ movbool(do_not_unlock_if_synchronized, true);
+
+ __ profile_parameters_type(rax, rcx, rdx);
+ // increment invocation count & check for overflow
+ Label invocation_counter_overflow;
+ Label profile_method;
+ Label profile_method_continue;
+ if (inc_counter) {
+ generate_counter_incr(&invocation_counter_overflow,
+ &profile_method,
+ &profile_method_continue);
+ if (ProfileInterpreter) {
+ __ bind(profile_method_continue);
+ }
+ }
+
+ Label continue_after_compile;
+ __ bind(continue_after_compile);
+
+ // check for synchronized interpreted methods
+ bang_stack_shadow_pages(false);
+
+ // reset the _do_not_unlock_if_synchronized flag
+ NOT_LP64(__ get_thread(thread));
+ __ movbool(do_not_unlock_if_synchronized, false);
+
+ // check for synchronized methods
+ // Must happen AFTER invocation_counter check and stack overflow check,
+ // so method is not locked if overflows.
+ if (synchronized) {
+ // Allocate monitor and lock method
+ lock_method();
+ } else {
+ // no synchronization necessary
+#ifdef ASSERT
+ {
+ Label L;
+ __ movl(rax, access_flags);
+ __ testl(rax, JVM_ACC_SYNCHRONIZED);
+ __ jcc(Assembler::zero, L);
+ __ stop("method needs synchronization");
+ __ bind(L);
+ }
+#endif
+ }
+
+ // start execution
+#ifdef ASSERT
+ {
+ Label L;
+ const Address monitor_block_top (rbp,
+ frame::interpreter_frame_monitor_block_top_offset * wordSize);
+ __ movptr(rax, monitor_block_top);
+ __ cmpptr(rax, rsp);
+ __ jcc(Assembler::equal, L);
+ __ stop("broken stack frame setup in interpreter");
+ __ bind(L);
+ }
+#endif
+
+ // jvmti support
+ __ notify_method_entry();
+
+ __ dispatch_next(vtos);
+
+ // invocation counter overflow
+ if (inc_counter) {
+ if (ProfileInterpreter) {
+ // We have decided to profile this method in the interpreter
+ __ bind(profile_method);
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method));
+ __ set_method_data_pointer_for_bcp();
+ __ get_method(rbx);
+ __ jmp(profile_method_continue);
+ }
+ // Handle overflow of counter and compile method
+ __ bind(invocation_counter_overflow);
+ generate_counter_overflow(&continue_after_compile);
+ }
+
+ return entry_point;
+}
+
+//-----------------------------------------------------------------------------
+// Exceptions
+
+void TemplateInterpreterGenerator::generate_throw_exception() {
+ // Entry point in previous activation (i.e., if the caller was
+ // interpreted)
+ Interpreter::_rethrow_exception_entry = __ pc();
+ // Restore sp to interpreter_frame_last_sp even though we are going
+ // to empty the expression stack for the exception processing.
+ __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
+ // rax: exception
+ // rdx: return address/pc that threw exception
+ __ restore_bcp(); // r13/rsi points to call/send
+ __ restore_locals();
+ LP64_ONLY(__ reinit_heapbase()); // restore r12 as heapbase.
+ // Entry point for exceptions thrown within interpreter code
+ Interpreter::_throw_exception_entry = __ pc();
+ // expression stack is undefined here
+ // rax: exception
+ // r13/rsi: exception bcp
+ __ verify_oop(rax);
+ Register rarg = NOT_LP64(rax) LP64_ONLY(c_rarg1);
+ LP64_ONLY(__ mov(c_rarg1, rax));
+
+ // expression stack must be empty before entering the VM in case of
+ // an exception
+ __ empty_expression_stack();
+ // find exception handler address and preserve exception oop
+ __ call_VM(rdx,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::exception_handler_for_exception),
+ rarg);
+ // rax: exception handler entry point
+ // rdx: preserved exception oop
+ // r13/rsi: bcp for exception handler
+ __ push_ptr(rdx); // push exception which is now the only value on the stack
+ __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!)
+
+ // If the exception is not handled in the current frame the frame is
+ // removed and the exception is rethrown (i.e. exception
+ // continuation is _rethrow_exception).
+ //
+ // Note: At this point the bci is still the bxi for the instruction
+ // which caused the exception and the expression stack is
+ // empty. Thus, for any VM calls at this point, GC will find a legal
+ // oop map (with empty expression stack).
+
+ // In current activation
+ // tos: exception
+ // esi: exception bcp
+
+ //
+ // JVMTI PopFrame support
+ //
+
+ Interpreter::_remove_activation_preserving_args_entry = __ pc();
+ __ empty_expression_stack();
+ // Set the popframe_processing bit in pending_popframe_condition
+ // indicating that we are currently handling popframe, so that
+ // call_VMs that may happen later do not trigger new popframe
+ // handling cycles.
+ const Register thread = NOT_LP64(rcx) LP64_ONLY(r15_thread);
+ NOT_LP64(__ get_thread(thread));
+ __ movl(rdx, Address(thread, JavaThread::popframe_condition_offset()));
+ __ orl(rdx, JavaThread::popframe_processing_bit);
+ __ movl(Address(thread, JavaThread::popframe_condition_offset()), rdx);
+
+ {
+ // Check to see whether we are returning to a deoptimized frame.
+ // (The PopFrame call ensures that the caller of the popped frame is
+ // either interpreted or compiled and deoptimizes it if compiled.)
+ // In this case, we can't call dispatch_next() after the frame is
+ // popped, but instead must save the incoming arguments and restore
+ // them after deoptimization has occurred.
+ //
+ // Note that we don't compare the return PC against the
+ // deoptimization blob's unpack entry because of the presence of
+ // adapter frames in C2.
+ Label caller_not_deoptimized;
+ Register rarg = NOT_LP64(rdx) LP64_ONLY(c_rarg1);
+ __ movptr(rarg, Address(rbp, frame::return_addr_offset * wordSize));
+ __ super_call_VM_leaf(CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::interpreter_contains), rarg);
+ __ testl(rax, rax);
+ __ jcc(Assembler::notZero, caller_not_deoptimized);
+
+ // Compute size of arguments for saving when returning to
+ // deoptimized caller
+ __ get_method(rax);
+ __ movptr(rax, Address(rax, Method::const_offset()));
+ __ load_unsigned_short(rax, Address(rax, in_bytes(ConstMethod::
+ size_of_parameters_offset())));
+ __ shll(rax, Interpreter::logStackElementSize);
+ __ restore_locals();
+ __ subptr(rlocals, rax);
+ __ addptr(rlocals, wordSize);
+ // Save these arguments
+ NOT_LP64(__ get_thread(thread));
+ __ super_call_VM_leaf(CAST_FROM_FN_PTR(address,
+ Deoptimization::
+ popframe_preserve_args),
+ thread, rax, rlocals);
+
+ __ remove_activation(vtos, rdx,
+ /* throw_monitor_exception */ false,
+ /* install_monitor_exception */ false,
+ /* notify_jvmdi */ false);
+
+ // Inform deoptimization that it is responsible for restoring
+ // these arguments
+ NOT_LP64(__ get_thread(thread));
+ __ movl(Address(thread, JavaThread::popframe_condition_offset()),
+ JavaThread::popframe_force_deopt_reexecution_bit);
+
+ // Continue in deoptimization handler
+ __ jmp(rdx);
+
+ __ bind(caller_not_deoptimized);
+ }
+
+ __ remove_activation(vtos, rdx, /* rdx result (retaddr) is not used */
+ /* throw_monitor_exception */ false,
+ /* install_monitor_exception */ false,
+ /* notify_jvmdi */ false);
+
+ // Finish with popframe handling
+ // A previous I2C followed by a deoptimization might have moved the
+ // outgoing arguments further up the stack. PopFrame expects the
+ // mutations to those outgoing arguments to be preserved and other
+ // constraints basically require this frame to look exactly as
+ // though it had previously invoked an interpreted activation with
+ // no space between the top of the expression stack (current
+ // last_sp) and the top of stack. Rather than force deopt to
+ // maintain this kind of invariant all the time we call a small
+ // fixup routine to move the mutated arguments onto the top of our
+ // expression stack if necessary.
+#ifndef _LP64
+ __ mov(rax, rsp);
+ __ movptr(rbx, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize));
+ __ get_thread(thread);
+ // PC must point into interpreter here
+ __ set_last_Java_frame(thread, noreg, rbp, __ pc());
+ __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), thread, rax, rbx);
+ __ get_thread(thread);
+#else
+ __ mov(c_rarg1, rsp);
+ __ movptr(c_rarg2, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize));
+ // PC must point into interpreter here
+ __ set_last_Java_frame(noreg, rbp, __ pc());
+ __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), r15_thread, c_rarg1, c_rarg2);
+#endif
+ __ reset_last_Java_frame(thread, true, true);
+
+ // Restore the last_sp and null it out
+ __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize));
+ __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
+
+ __ restore_bcp();
+ __ restore_locals();
+ // The method data pointer was incremented already during
+ // call profiling. We have to restore the mdp for the current bcp.
+ if (ProfileInterpreter) {
+ __ set_method_data_pointer_for_bcp();
+ }
+
+ // Clear the popframe condition flag
+ NOT_LP64(__ get_thread(thread));
+ __ movl(Address(thread, JavaThread::popframe_condition_offset()),
+ JavaThread::popframe_inactive);
+
+#if INCLUDE_JVMTI
+ {
+ Label L_done;
+ const Register local0 = rlocals;
+
+ __ cmpb(Address(rbcp, 0), Bytecodes::_invokestatic);
+ __ jcc(Assembler::notEqual, L_done);
+
+ // The member name argument must be restored if _invokestatic is re-executed after a PopFrame call.
+ // Detect such a case in the InterpreterRuntime function and return the member name argument, or NULL.
+
+ __ get_method(rdx);
+ __ movptr(rax, Address(local0, 0));
+ __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::member_name_arg_or_null), rax, rdx, rbcp);
+
+ __ testptr(rax, rax);
+ __ jcc(Assembler::zero, L_done);
+
+ __ movptr(Address(rbx, 0), rax);
+ __ bind(L_done);
+ }
+#endif // INCLUDE_JVMTI
+
+ __ dispatch_next(vtos);
+ // end of PopFrame support
+
+ Interpreter::_remove_activation_entry = __ pc();
+
+ // preserve exception over this code sequence
+ __ pop_ptr(rax);
+ NOT_LP64(__ get_thread(thread));
+ __ movptr(Address(thread, JavaThread::vm_result_offset()), rax);
+ // remove the activation (without doing throws on illegalMonitorExceptions)
+ __ remove_activation(vtos, rdx, false, true, false);
+ // restore exception
+ NOT_LP64(__ get_thread(thread));
+ __ get_vm_result(rax, thread);
+
+ // In between activations - previous activation type unknown yet
+ // compute continuation point - the continuation point expects the
+ // following registers set up:
+ //
+ // rax: exception
+ // rdx: return address/pc that threw exception
+ // rsp: expression stack of caller
+ // rbp: ebp of caller
+ __ push(rax); // save exception
+ __ push(rdx); // save return address
+ __ super_call_VM_leaf(CAST_FROM_FN_PTR(address,
+ SharedRuntime::exception_handler_for_return_address),
+ thread, rdx);
+ __ mov(rbx, rax); // save exception handler
+ __ pop(rdx); // restore return address
+ __ pop(rax); // restore exception
+ // Note that an "issuing PC" is actually the next PC after the call
+ __ jmp(rbx); // jump to exception
+ // handler of caller
+}
+
+
+//
+// JVMTI ForceEarlyReturn support
+//
+address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) {
+ address entry = __ pc();
+
+ __ restore_bcp();
+ __ restore_locals();
+ __ empty_expression_stack();
+ __ load_earlyret_value(state); // 32 bits returns value in rdx, so don't reuse
+
+ const Register thread = NOT_LP64(rcx) LP64_ONLY(r15_thread);
+ NOT_LP64(__ get_thread(thread));
+ __ movptr(rcx, Address(thread, JavaThread::jvmti_thread_state_offset()));
+ Address cond_addr(rcx, JvmtiThreadState::earlyret_state_offset());
+
+ // Clear the earlyret state
+ __ movl(cond_addr, JvmtiThreadState::earlyret_inactive);
+
+ __ remove_activation(state, rsi,
+ false, /* throw_monitor_exception */
+ false, /* install_monitor_exception */
+ true); /* notify_jvmdi */
+ __ jmp(rsi);
+
+ return entry;
+} // end of ForceEarlyReturn support
+
+
+//-----------------------------------------------------------------------------
+// Helper for vtos entry point generation
+
+void TemplateInterpreterGenerator::set_vtos_entry_points(Template* t,
+ address& bep,
+ address& cep,
+ address& sep,
+ address& aep,
+ address& iep,
+ address& lep,
+ address& fep,
+ address& dep,
+ address& vep) {
+ assert(t->is_valid() && t->tos_in() == vtos, "illegal template");
+ Label L;
+ aep = __ pc(); __ push_ptr(); __ jmp(L);
+#ifndef _LP64
+ fep = __ pc(); __ push(ftos); __ jmp(L);
+ dep = __ pc(); __ push(dtos); __ jmp(L);
+#else
+ fep = __ pc(); __ push_f(xmm0); __ jmp(L);
+ dep = __ pc(); __ push_d(xmm0); __ jmp(L);
+#endif // _LP64
+ lep = __ pc(); __ push_l(); __ jmp(L);
+ bep = cep = sep =
+ iep = __ pc(); __ push_i();
+ vep = __ pc();
+ __ bind(L);
+ generate_and_dispatch(t);
+}
+
+
+//-----------------------------------------------------------------------------
+// Generation of individual instructions
+
+// helpers for generate_and_dispatch
+
+
+InterpreterGenerator::InterpreterGenerator(StubQueue* code)
+ : TemplateInterpreterGenerator(code) {
+ generate_all(); // down here so it can be "virtual"
+}
+
+//-----------------------------------------------------------------------------
+
+// Non-product code
+#ifndef PRODUCT
+
+address TemplateInterpreterGenerator::generate_trace_code(TosState state) {
+ address entry = __ pc();
+
+#ifndef _LP64
+ // prepare expression stack
+ __ pop(rcx); // pop return address so expression stack is 'pure'
+ __ push(state); // save tosca
+
+ // pass tosca registers as arguments & call tracer
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), rcx, rax, rdx);
+ __ mov(rcx, rax); // make sure return address is not destroyed by pop(state)
+ __ pop(state); // restore tosca
+
+ // return
+ __ jmp(rcx);
+#else
+ __ push(state);
+ __ push(c_rarg0);
+ __ push(c_rarg1);
+ __ push(c_rarg2);
+ __ push(c_rarg3);
+ __ mov(c_rarg2, rax); // Pass itos
+#ifdef _WIN64
+ __ movflt(xmm3, xmm0); // Pass ftos
+#endif
+ __ call_VM(noreg,
+ CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode),
+ c_rarg1, c_rarg2, c_rarg3);
+ __ pop(c_rarg3);
+ __ pop(c_rarg2);
+ __ pop(c_rarg1);
+ __ pop(c_rarg0);
+ __ pop(state);
+ __ ret(0); // return from result handler
+#endif // _LP64
+
+ return entry;
+}
+
+void TemplateInterpreterGenerator::count_bytecode() {
+ __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value));
+}
+
+void TemplateInterpreterGenerator::histogram_bytecode(Template* t) {
+ __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()]));
+}
+
+void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) {
+ __ mov32(rbx, ExternalAddress((address) &BytecodePairHistogram::_index));
+ __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes);
+ __ orl(rbx,
+ ((int) t->bytecode()) <<
+ BytecodePairHistogram::log2_number_of_codes);
+ __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx);
+ __ lea(rscratch1, ExternalAddress((address) BytecodePairHistogram::_counters));
+ __ incrementl(Address(rscratch1, rbx, Address::times_4));
+}
+
+
+void TemplateInterpreterGenerator::trace_bytecode(Template* t) {
+ // Call a little run-time stub to avoid blow-up for each bytecode.
+ // The run-time runtime saves the right registers, depending on
+ // the tosca in-state for the given template.
+
+ assert(Interpreter::trace_code(t->tos_in()) != NULL,
+ "entry must have been generated");
+#ifndef _LP64
+ __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in())));
+#else
+ __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM)
+ __ andptr(rsp, -16); // align stack as required by ABI
+ __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in())));
+ __ mov(rsp, r12); // restore sp
+ __ reinit_heapbase();
+#endif // _LP64
+}
+
+
+void TemplateInterpreterGenerator::stop_interpreter_at() {
+ Label L;
+ __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value),
+ StopInterpreterAt);
+ __ jcc(Assembler::notEqual, L);
+ __ int3();
+ __ bind(L);
+}
+#endif // !PRODUCT
+#endif // ! CC_INTERP
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/cpu/x86/vm/templateInterpreterGenerator_x86_32.cpp Sat Dec 05 17:14:02 2015 +0000
@@ -0,0 +1,305 @@
+/*
+ * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "asm/macroAssembler.hpp"
+#include "interpreter/interpreter.hpp"
+#include "interpreter/interpreterGenerator.hpp"
+#include "runtime/arguments.hpp"
+
+#define __ _masm->
+
+
+#ifndef CC_INTERP
+
+/**
+ * Method entry for static native methods:
+ * int java.util.zip.CRC32.update(int crc, int b)
+ */
+address InterpreterGenerator::generate_CRC32_update_entry() {
+ if (UseCRC32Intrinsics) {
+ address entry = __ pc();
+
+ // rbx: Method*
+ // rsi: senderSP must preserved for slow path, set SP to it on fast path
+ // rdx: scratch
+ // rdi: scratch
+
+ Label slow_path;
+ // If we need a safepoint check, generate full interpreter entry.
+ ExternalAddress state(SafepointSynchronize::address_of_state());
+ __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()),
+ SafepointSynchronize::_not_synchronized);
+ __ jcc(Assembler::notEqual, slow_path);
+
+ // We don't generate local frame and don't align stack because
+ // we call stub code and there is no safepoint on this path.
+
+ // Load parameters
+ const Register crc = rax; // crc
+ const Register val = rdx; // source java byte value
+ const Register tbl = rdi; // scratch
+
+ // Arguments are reversed on java expression stack
+ __ movl(val, Address(rsp, wordSize)); // byte value
+ __ movl(crc, Address(rsp, 2*wordSize)); // Initial CRC
+
+ __ lea(tbl, ExternalAddress(StubRoutines::crc_table_addr()));
+ __ notl(crc); // ~crc
+ __ update_byte_crc32(crc, val, tbl);
+ __ notl(crc); // ~crc
+ // result in rax
+
+ // _areturn
+ __ pop(rdi); // get return address
+ __ mov(rsp, rsi); // set sp to sender sp
+ __ jmp(rdi);
+
+ // generate a vanilla native entry as the slow path
+ __ bind(slow_path);
+ __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::native));
+ return entry;
+ }
+ return NULL;
+}
+
+/**
+ * Method entry for static native methods:
+ * int java.util.zip.CRC32.updateBytes(int crc, byte[] b, int off, int len)
+ * int java.util.zip.CRC32.updateByteBuffer(int crc, long buf, int off, int len)
+ */
+address InterpreterGenerator::generate_CRC32_updateBytes_entry(AbstractInterpreter::MethodKind kind) {
+ if (UseCRC32Intrinsics) {
+ address entry = __ pc();
+
+ // rbx,: Method*
+ // rsi: senderSP must preserved for slow path, set SP to it on fast path
+ // rdx: scratch
+ // rdi: scratch
+
+ Label slow_path;
+ // If we need a safepoint check, generate full interpreter entry.
+ ExternalAddress state(SafepointSynchronize::address_of_state());
+ __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()),
+ SafepointSynchronize::_not_synchronized);
+ __ jcc(Assembler::notEqual, slow_path);
+
+ // We don't generate local frame and don't align stack because
+ // we call stub code and there is no safepoint on this path.
+
+ // Load parameters
+ const Register crc = rax; // crc
+ const Register buf = rdx; // source java byte array address
+ const Register len = rdi; // length
+
+ // value x86_32
+ // interp. arg ptr ESP + 4
+ // int java.util.zip.CRC32.updateBytes(int crc, byte[] b, int off, int len)
+ // 3 2 1 0
+ // int java.util.zip.CRC32.updateByteBuffer(int crc, long buf, int off, int len)
+ // 4 2,3 1 0
+
+ // Arguments are reversed on java expression stack
+ __ movl(len, Address(rsp, 4 + 0)); // Length
+ // Calculate address of start element
+ if (kind == Interpreter::java_util_zip_CRC32_updateByteBuffer) {
+ __ movptr(buf, Address(rsp, 4 + 2 * wordSize)); // long buf
+ __ addptr(buf, Address(rsp, 4 + 1 * wordSize)); // + offset
+ __ movl(crc, Address(rsp, 4 + 4 * wordSize)); // Initial CRC
+ } else {
+ __ movptr(buf, Address(rsp, 4 + 2 * wordSize)); // byte[] array
+ __ addptr(buf, arrayOopDesc::base_offset_in_bytes(T_BYTE)); // + header size
+ __ addptr(buf, Address(rsp, 4 + 1 * wordSize)); // + offset
+ __ movl(crc, Address(rsp, 4 + 3 * wordSize)); // Initial CRC
+ }
+
+ __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, StubRoutines::updateBytesCRC32()), crc, buf, len);
+ // result in rax
+
+ // _areturn
+ __ pop(rdi); // get return address
+ __ mov(rsp, rsi); // set sp to sender sp
+ __ jmp(rdi);
+
+ // generate a vanilla native entry as the slow path
+ __ bind(slow_path);
+ __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::native));
+ return entry;
+ }
+ return NULL;
+}
+
+/**
+* Method entry for static native methods:
+* int java.util.zip.CRC32C.updateBytes(int crc, byte[] b, int off, int end)
+* int java.util.zip.CRC32C.updateByteBuffer(int crc, long address, int off, int end)
+*/
+address InterpreterGenerator::generate_CRC32C_updateBytes_entry(AbstractInterpreter::MethodKind kind) {
+ if (UseCRC32CIntrinsics) {
+ address entry = __ pc();
+ // Load parameters
+ const Register crc = rax; // crc
+ const Register buf = rcx; // source java byte array address
+ const Register len = rdx; // length
+ const Register end = len;
+
+ // value x86_32
+ // interp. arg ptr ESP + 4
+ // int java.util.zip.CRC32.updateBytes(int crc, byte[] b, int off, int end)
+ // 3 2 1 0
+ // int java.util.zip.CRC32.updateByteBuffer(int crc, long address, int off, int end)
+ // 4 2,3 1 0
+
+ // Arguments are reversed on java expression stack
+ __ movl(end, Address(rsp, 4 + 0)); // end
+ __ subl(len, Address(rsp, 4 + 1 * wordSize)); // end - offset == length
+ // Calculate address of start element
+ if (kind == Interpreter::java_util_zip_CRC32C_updateDirectByteBuffer) {
+ __ movptr(buf, Address(rsp, 4 + 2 * wordSize)); // long address
+ __ addptr(buf, Address(rsp, 4 + 1 * wordSize)); // + offset
+ __ movl(crc, Address(rsp, 4 + 4 * wordSize)); // Initial CRC
+ } else {
+ __ movptr(buf, Address(rsp, 4 + 2 * wordSize)); // byte[] array
+ __ addptr(buf, arrayOopDesc::base_offset_in_bytes(T_BYTE)); // + header size
+ __ addptr(buf, Address(rsp, 4 + 1 * wordSize)); // + offset
+ __ movl(crc, Address(rsp, 4 + 3 * wordSize)); // Initial CRC
+ }
+ __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, StubRoutines::updateBytesCRC32C()), crc, buf, len);
+ // result in rax
+ // _areturn
+ __ pop(rdi); // get return address
+ __ mov(rsp, rsi); // set sp to sender sp
+ __ jmp(rdi);
+
+ return entry;
+ }
+ return NULL;
+}
+
+/**
+ * Method entry for static native method:
+ * java.lang.Float.intBitsToFloat(int bits)
+ */
+address InterpreterGenerator::generate_Float_intBitsToFloat_entry() {
+ if (UseSSE >= 1) {
+ address entry = __ pc();
+
+ // rsi: the sender's SP
+
+ // Skip safepoint check (compiler intrinsic versions of this method
+ // do not perform safepoint checks either).
+
+ // Load 'bits' into xmm0 (interpreter returns results in xmm0)
+ __ movflt(xmm0, Address(rsp, wordSize));
+
+ // Return
+ __ pop(rdi); // get return address
+ __ mov(rsp, rsi); // set rsp to the sender's SP
+ __ jmp(rdi);
+ return entry;
+ }
+
+ return NULL;
+}
+
+/**
+ * Method entry for static native method:
+ * java.lang.Float.floatToRawIntBits(float value)
+ */
+address InterpreterGenerator::generate_Float_floatToRawIntBits_entry() {
+ if (UseSSE >= 1) {
+ address entry = __ pc();
+
+ // rsi: the sender's SP
+
+ // Skip safepoint check (compiler intrinsic versions of this method
+ // do not perform safepoint checks either).
+
+ // Load the parameter (a floating-point value) into rax.
+ __ movl(rax, Address(rsp, wordSize));
+
+ // Return
+ __ pop(rdi); // get return address
+ __ mov(rsp, rsi); // set rsp to the sender's SP
+ __ jmp(rdi);
+ return entry;
+ }
+
+ return NULL;
+}
+
+
+/**
+ * Method entry for static native method:
+ * java.lang.Double.longBitsToDouble(long bits)
+ */
+address InterpreterGenerator::generate_Double_longBitsToDouble_entry() {
+ if (UseSSE >= 2) {
+ address entry = __ pc();
+
+ // rsi: the sender's SP
+
+ // Skip safepoint check (compiler intrinsic versions of this method
+ // do not perform safepoint checks either).
+
+ // Load 'bits' into xmm0 (interpreter returns results in xmm0)
+ __ movdbl(xmm0, Address(rsp, wordSize));
+
+ // Return
+ __ pop(rdi); // get return address
+ __ mov(rsp, rsi); // set rsp to the sender's SP
+ __ jmp(rdi);
+ return entry;
+ }
+
+ return NULL;
+}
+
+/**
+ * Method entry for static native method:
+ * java.lang.Double.doubleToRawLongBits(double value)
+ */
+address InterpreterGenerator::generate_Double_doubleToRawLongBits_entry() {
+ if (UseSSE >= 2) {
+ address entry = __ pc();
+
+ // rsi: the sender's SP
+
+ // Skip safepoint check (compiler intrinsic versions of this method
+ // do not perform safepoint checks either).
+
+ // Load the parameter (a floating-point value) into rax.
+ __ movl(rdx, Address(rsp, 2*wordSize));
+ __ movl(rax, Address(rsp, wordSize));
+
+ // Return
+ __ pop(rdi); // get return address
+ __ mov(rsp, rsi); // set rsp to the sender's SP
+ __ jmp(rdi);
+ return entry;
+ }
+
+ return NULL;
+}
+#endif // CC_INTERP
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/cpu/x86/vm/templateInterpreterGenerator_x86_64.cpp Sat Dec 05 17:14:02 2015 +0000
@@ -0,0 +1,197 @@
+/*
+ * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "asm/macroAssembler.hpp"
+#include "interpreter/interpreter.hpp"
+#include "interpreter/interpreterGenerator.hpp"
+#include "runtime/arguments.hpp"
+
+#define __ _masm->
+
+#ifndef CC_INTERP
+
+/**
+ * Method entry for static native methods:
+ * int java.util.zip.CRC32.update(int crc, int b)
+ */
+address InterpreterGenerator::generate_CRC32_update_entry() {
+ if (UseCRC32Intrinsics) {
+ address entry = __ pc();
+
+ // rbx,: Method*
+ // r13: senderSP must preserved for slow path, set SP to it on fast path
+ // c_rarg0: scratch (rdi on non-Win64, rcx on Win64)
+ // c_rarg1: scratch (rsi on non-Win64, rdx on Win64)
+
+ Label slow_path;
+ // If we need a safepoint check, generate full interpreter entry.
+ ExternalAddress state(SafepointSynchronize::address_of_state());
+ __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()),
+ SafepointSynchronize::_not_synchronized);
+ __ jcc(Assembler::notEqual, slow_path);
+
+ // We don't generate local frame and don't align stack because
+ // we call stub code and there is no safepoint on this path.
+
+ // Load parameters
+ const Register crc = rax; // crc
+ const Register val = c_rarg0; // source java byte value
+ const Register tbl = c_rarg1; // scratch
+
+ // Arguments are reversed on java expression stack
+ __ movl(val, Address(rsp, wordSize)); // byte value
+ __ movl(crc, Address(rsp, 2*wordSize)); // Initial CRC
+
+ __ lea(tbl, ExternalAddress(StubRoutines::crc_table_addr()));
+ __ notl(crc); // ~crc
+ __ update_byte_crc32(crc, val, tbl);
+ __ notl(crc); // ~crc
+ // result in rax
+
+ // _areturn
+ __ pop(rdi); // get return address
+ __ mov(rsp, r13); // set sp to sender sp
+ __ jmp(rdi);
+
+ // generate a vanilla native entry as the slow path
+ __ bind(slow_path);
+ __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::native));
+ return entry;
+ }
+ return NULL;
+}
+
+/**
+ * Method entry for static native methods:
+ * int java.util.zip.CRC32.updateBytes(int crc, byte[] b, int off, int len)
+ * int java.util.zip.CRC32.updateByteBuffer(int crc, long buf, int off, int len)
+ */
+address InterpreterGenerator::generate_CRC32_updateBytes_entry(AbstractInterpreter::MethodKind kind) {
+ if (UseCRC32Intrinsics) {
+ address entry = __ pc();
+
+ // rbx,: Method*
+ // r13: senderSP must preserved for slow path, set SP to it on fast path
+
+ Label slow_path;
+ // If we need a safepoint check, generate full interpreter entry.
+ ExternalAddress state(SafepointSynchronize::address_of_state());
+ __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()),
+ SafepointSynchronize::_not_synchronized);
+ __ jcc(Assembler::notEqual, slow_path);
+
+ // We don't generate local frame and don't align stack because
+ // we call stub code and there is no safepoint on this path.
+
+ // Load parameters
+ const Register crc = c_rarg0; // crc
+ const Register buf = c_rarg1; // source java byte array address
+ const Register len = c_rarg2; // length
+ const Register off = len; // offset (never overlaps with 'len')
+
+ // Arguments are reversed on java expression stack
+ // Calculate address of start element
+ if (kind == Interpreter::java_util_zip_CRC32_updateByteBuffer) {
+ __ movptr(buf, Address(rsp, 3*wordSize)); // long buf
+ __ movl2ptr(off, Address(rsp, 2*wordSize)); // offset
+ __ addq(buf, off); // + offset
+ __ movl(crc, Address(rsp, 5*wordSize)); // Initial CRC
+ } else {
+ __ movptr(buf, Address(rsp, 3*wordSize)); // byte[] array
+ __ addptr(buf, arrayOopDesc::base_offset_in_bytes(T_BYTE)); // + header size
+ __ movl2ptr(off, Address(rsp, 2*wordSize)); // offset
+ __ addq(buf, off); // + offset
+ __ movl(crc, Address(rsp, 4*wordSize)); // Initial CRC
+ }
+ // Can now load 'len' since we're finished with 'off'
+ __ movl(len, Address(rsp, wordSize)); // Length
+
+ __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, StubRoutines::updateBytesCRC32()), crc, buf, len);
+ // result in rax
+
+ // _areturn
+ __ pop(rdi); // get return address
+ __ mov(rsp, r13); // set sp to sender sp
+ __ jmp(rdi);
+
+ // generate a vanilla native entry as the slow path
+ __ bind(slow_path);
+ __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::native));
+ return entry;
+ }
+ return NULL;
+}
+
+/**
+* Method entry for static native methods:
+* int java.util.zip.CRC32C.updateBytes(int crc, byte[] b, int off, int end)
+* int java.util.zip.CRC32C.updateByteBuffer(int crc, long address, int off, int end)
+*/
+address InterpreterGenerator::generate_CRC32C_updateBytes_entry(AbstractInterpreter::MethodKind kind) {
+ if (UseCRC32CIntrinsics) {
+ address entry = __ pc();
+ // Load parameters
+ const Register crc = c_rarg0; // crc
+ const Register buf = c_rarg1; // source java byte array address
+ const Register len = c_rarg2;
+ const Register off = c_rarg3; // offset
+ const Register end = len;
+
+ // Arguments are reversed on java expression stack
+ // Calculate address of start element
+ if (kind == Interpreter::java_util_zip_CRC32C_updateDirectByteBuffer) {
+ __ movptr(buf, Address(rsp, 3 * wordSize)); // long buf
+ __ movl2ptr(off, Address(rsp, 2 * wordSize)); // offset
+ __ addq(buf, off); // + offset
+ __ movl(crc, Address(rsp, 5 * wordSize)); // Initial CRC
+ // Note on 5 * wordSize vs. 4 * wordSize:
+ // * int java.util.zip.CRC32C.updateByteBuffer(int crc, long address, int off, int end)
+ // 4 2,3 1 0
+ // end starts at SP + 8
+ // The Java(R) Virtual Machine Specification Java SE 7 Edition
+ // 4.10.2.3. Values of Types long and double
+ // "When calculating operand stack length, values of type long and double have length two."
+ } else {
+ __ movptr(buf, Address(rsp, 3 * wordSize)); // byte[] array
+ __ addptr(buf, arrayOopDesc::base_offset_in_bytes(T_BYTE)); // + header size
+ __ movl2ptr(off, Address(rsp, 2 * wordSize)); // offset
+ __ addq(buf, off); // + offset
+ __ movl(crc, Address(rsp, 4 * wordSize)); // Initial CRC
+ }
+ __ movl(end, Address(rsp, wordSize)); // end
+ __ subl(end, off); // end - off
+ __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, StubRoutines::updateBytesCRC32C()), crc, buf, len);
+ // result in rax
+ // _areturn
+ __ pop(rdi); // get return address
+ __ mov(rsp, r13); // set sp to sender sp
+ __ jmp(rdi);
+
+ return entry;
+ }
+
+ return NULL;
+}
+#endif // ! CC_INTERP
--- a/hotspot/src/cpu/x86/vm/templateInterpreter_x86.cpp Sat Dec 05 15:17:29 2015 +0100
+++ b/hotspot/src/cpu/x86/vm/templateInterpreter_x86.cpp Sat Dec 05 17:14:02 2015 +0000
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -116,4 +116,87 @@
method->constants()->cache();
}
+#ifndef _LP64
+int AbstractInterpreter::BasicType_as_index(BasicType type) {
+ int i = 0;
+ switch (type) {
+ case T_BOOLEAN: i = 0; break;
+ case T_CHAR : i = 1; break;
+ case T_BYTE : i = 2; break;
+ case T_SHORT : i = 3; break;
+ case T_INT : // fall through
+ case T_LONG : // fall through
+ case T_VOID : i = 4; break;
+ case T_FLOAT : i = 5; break; // have to treat float and double separately for SSE
+ case T_DOUBLE : i = 6; break;
+ case T_OBJECT : // fall through
+ case T_ARRAY : i = 7; break;
+ default : ShouldNotReachHere();
+ }
+ assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, "index out of bounds");
+ return i;
+}
+#else
+int AbstractInterpreter::BasicType_as_index(BasicType type) {
+ int i = 0;
+ switch (type) {
+ case T_BOOLEAN: i = 0; break;
+ case T_CHAR : i = 1; break;
+ case T_BYTE : i = 2; break;
+ case T_SHORT : i = 3; break;
+ case T_INT : i = 4; break;
+ case T_LONG : i = 5; break;
+ case T_VOID : i = 6; break;
+ case T_FLOAT : i = 7; break;
+ case T_DOUBLE : i = 8; break;
+ case T_OBJECT : i = 9; break;
+ case T_ARRAY : i = 9; break;
+ default : ShouldNotReachHere();
+ }
+ assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers,
+ "index out of bounds");
+ return i;
+}
+#endif // _LP64
+
+// These should never be compiled since the interpreter will prefer
+// the compiled version to the intrinsic version.
+bool AbstractInterpreter::can_be_compiled(methodHandle m) {
+ switch (method_kind(m)) {
+ case Interpreter::java_lang_math_sin : // fall thru
+ case Interpreter::java_lang_math_cos : // fall thru
+ case Interpreter::java_lang_math_tan : // fall thru
+ case Interpreter::java_lang_math_abs : // fall thru
+ case Interpreter::java_lang_math_log : // fall thru
+ case Interpreter::java_lang_math_log10 : // fall thru
+ case Interpreter::java_lang_math_sqrt : // fall thru
+ case Interpreter::java_lang_math_pow : // fall thru
+ case Interpreter::java_lang_math_exp :
+ return false;
+ default:
+ return true;
+ }
+}
+
+// How much stack a method activation needs in words.
+int AbstractInterpreter::size_top_interpreter_activation(Method* method) {
+ const int entry_size = frame::interpreter_frame_monitor_size();
+
+ // total overhead size: entry_size + (saved rbp thru expr stack
+ // bottom). be sure to change this if you add/subtract anything
+ // to/from the overhead area
+ const int overhead_size =
+ -(frame::interpreter_frame_initial_sp_offset) + entry_size;
+
+#ifndef _LP64
+ const int stub_code = 4; // see generate_call_stub
+#else
+ const int stub_code = frame::entry_frame_after_call_words;
+#endif
+
+ const int method_stack = (method->max_locals() + method->max_stack()) *
+ Interpreter::stackElementWords;
+ return (overhead_size + method_stack + stub_code);
+}
+
#endif // CC_INTERP
--- a/hotspot/src/cpu/x86/vm/templateInterpreter_x86_32.cpp Sat Dec 05 15:17:29 2015 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,1916 +0,0 @@
-/*
- * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- *
- */
-
-#include "precompiled.hpp"
-#include "asm/macroAssembler.hpp"
-#include "interpreter/bytecodeHistogram.hpp"
-#include "interpreter/interpreter.hpp"
-#include "interpreter/interpreterGenerator.hpp"
-#include "interpreter/interpreterRuntime.hpp"
-#include "interpreter/interp_masm.hpp"
-#include "interpreter/templateTable.hpp"
-#include "oops/arrayOop.hpp"
-#include "oops/methodData.hpp"
-#include "oops/method.hpp"
-#include "oops/oop.inline.hpp"
-#include "prims/jvmtiExport.hpp"
-#include "prims/jvmtiThreadState.hpp"
-#include "runtime/arguments.hpp"
-#include "runtime/deoptimization.hpp"
-#include "runtime/frame.inline.hpp"
-#include "runtime/sharedRuntime.hpp"
-#include "runtime/stubRoutines.hpp"
-#include "runtime/synchronizer.hpp"
-#include "runtime/timer.hpp"
-#include "runtime/vframeArray.hpp"
-#include "utilities/debug.hpp"
-#include "utilities/macros.hpp"
-
-#define __ _masm->
-
-
-#ifndef CC_INTERP
-const int method_offset = frame::interpreter_frame_method_offset * wordSize;
-const int bcp_offset = frame::interpreter_frame_bcp_offset * wordSize;
-const int locals_offset = frame::interpreter_frame_locals_offset * wordSize;
-
-//------------------------------------------------------------------------------------------------------------------------
-
-address TemplateInterpreterGenerator::generate_StackOverflowError_handler() {
- address entry = __ pc();
-
- // Note: There should be a minimal interpreter frame set up when stack
- // overflow occurs since we check explicitly for it now.
- //
-#ifdef ASSERT
- { Label L;
- __ lea(rax, Address(rbp,
- frame::interpreter_frame_monitor_block_top_offset * wordSize));
- __ cmpptr(rax, rsp); // rax, = maximal rsp for current rbp,
- // (stack grows negative)
- __ jcc(Assembler::aboveEqual, L); // check if frame is complete
- __ stop ("interpreter frame not set up");
- __ bind(L);
- }
-#endif // ASSERT
- // Restore bcp under the assumption that the current frame is still
- // interpreted
- __ restore_bcp();
-
- // expression stack must be empty before entering the VM if an exception
- // happened
- __ empty_expression_stack();
- __ empty_FPU_stack();
- // throw exception
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_StackOverflowError));
- return entry;
-}
-
-address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler(const char* name) {
- address entry = __ pc();
- // expression stack must be empty before entering the VM if an exception happened
- __ empty_expression_stack();
- __ empty_FPU_stack();
- // setup parameters
- // ??? convention: expect aberrant index in register rbx,
- __ lea(rax, ExternalAddress((address)name));
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_ArrayIndexOutOfBoundsException), rax, rbx);
- return entry;
-}
-
-address TemplateInterpreterGenerator::generate_ClassCastException_handler() {
- address entry = __ pc();
- // object is at TOS
- __ pop(rax);
- // expression stack must be empty before entering the VM if an exception
- // happened
- __ empty_expression_stack();
- __ empty_FPU_stack();
- __ call_VM(noreg,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::throw_ClassCastException),
- rax);
- return entry;
-}
-
-address TemplateInterpreterGenerator::generate_exception_handler_common(const char* name, const char* message, bool pass_oop) {
- assert(!pass_oop || message == NULL, "either oop or message but not both");
- address entry = __ pc();
- if (pass_oop) {
- // object is at TOS
- __ pop(rbx);
- }
- // expression stack must be empty before entering the VM if an exception happened
- __ empty_expression_stack();
- __ empty_FPU_stack();
- // setup parameters
- __ lea(rax, ExternalAddress((address)name));
- if (pass_oop) {
- __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_klass_exception), rax, rbx);
- } else {
- if (message != NULL) {
- __ lea(rbx, ExternalAddress((address)message));
- } else {
- __ movptr(rbx, NULL_WORD);
- }
- __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception), rax, rbx);
- }
- // throw exception
- __ jump(ExternalAddress(Interpreter::throw_exception_entry()));
- return entry;
-}
-
-
-address TemplateInterpreterGenerator::generate_continuation_for(TosState state) {
- address entry = __ pc();
- // NULL last_sp until next java call
- __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
- __ dispatch_next(state);
- return entry;
-}
-
-
-address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step, size_t index_size) {
- address entry = __ pc();
-
-#ifdef COMPILER2
- // The FPU stack is clean if UseSSE >= 2 but must be cleaned in other cases
- if ((state == ftos && UseSSE < 1) || (state == dtos && UseSSE < 2)) {
- for (int i = 1; i < 8; i++) {
- __ ffree(i);
- }
- } else if (UseSSE < 2) {
- __ empty_FPU_stack();
- }
-#endif
- if ((state == ftos && UseSSE < 1) || (state == dtos && UseSSE < 2)) {
- __ MacroAssembler::verify_FPU(1, "generate_return_entry_for compiled");
- } else {
- __ MacroAssembler::verify_FPU(0, "generate_return_entry_for compiled");
- }
-
- if (state == ftos) {
- __ MacroAssembler::verify_FPU(UseSSE >= 1 ? 0 : 1, "generate_return_entry_for in interpreter");
- } else if (state == dtos) {
- __ MacroAssembler::verify_FPU(UseSSE >= 2 ? 0 : 1, "generate_return_entry_for in interpreter");
- }
-
- // Restore stack bottom in case i2c adjusted stack
- __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize));
- // and NULL it as marker that rsp is now tos until next java call
- __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
-
- __ restore_bcp();
- __ restore_locals();
-
- if (state == atos) {
- Register mdp = rbx;
- Register tmp = rcx;
- __ profile_return_type(mdp, rax, tmp);
- }
-
- const Register cache = rbx;
- const Register index = rcx;
- __ get_cache_and_index_at_bcp(cache, index, 1, index_size);
-
- const Register flags = cache;
- __ movl(flags, Address(cache, index, Address::times_ptr, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::flags_offset()));
- __ andl(flags, ConstantPoolCacheEntry::parameter_size_mask);
- __ lea(rsp, Address(rsp, flags, Interpreter::stackElementScale()));
- __ dispatch_next(state, step);
-
- return entry;
-}
-
-
-address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, int step) {
- address entry = __ pc();
-
- if (state == ftos) {
- __ MacroAssembler::verify_FPU(UseSSE >= 1 ? 0 : 1, "generate_deopt_entry_for in interpreter");
- } else if (state == dtos) {
- __ MacroAssembler::verify_FPU(UseSSE >= 2 ? 0 : 1, "generate_deopt_entry_for in interpreter");
- }
-
- // The stack is not extended by deopt but we must NULL last_sp as this
- // entry is like a "return".
- __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
- __ restore_bcp();
- __ restore_locals();
- // handle exceptions
- { Label L;
- const Register thread = rcx;
- __ get_thread(thread);
- __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD);
- __ jcc(Assembler::zero, L);
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception));
- __ should_not_reach_here();
- __ bind(L);
- }
- __ dispatch_next(state, step);
- return entry;
-}
-
-
-int AbstractInterpreter::BasicType_as_index(BasicType type) {
- int i = 0;
- switch (type) {
- case T_BOOLEAN: i = 0; break;
- case T_CHAR : i = 1; break;
- case T_BYTE : i = 2; break;
- case T_SHORT : i = 3; break;
- case T_INT : // fall through
- case T_LONG : // fall through
- case T_VOID : i = 4; break;
- case T_FLOAT : i = 5; break; // have to treat float and double separately for SSE
- case T_DOUBLE : i = 6; break;
- case T_OBJECT : // fall through
- case T_ARRAY : i = 7; break;
- default : ShouldNotReachHere();
- }
- assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers, "index out of bounds");
- return i;
-}
-
-
-address TemplateInterpreterGenerator::generate_result_handler_for(BasicType type) {
- address entry = __ pc();
- switch (type) {
- case T_BOOLEAN: __ c2bool(rax); break;
- case T_CHAR : __ andptr(rax, 0xFFFF); break;
- case T_BYTE : __ sign_extend_byte (rax); break;
- case T_SHORT : __ sign_extend_short(rax); break;
- case T_INT : /* nothing to do */ break;
- case T_LONG : /* nothing to do */ break;
- case T_VOID : /* nothing to do */ break;
- case T_DOUBLE :
- case T_FLOAT :
- { const Register t = InterpreterRuntime::SignatureHandlerGenerator::temp();
- __ pop(t); // remove return address first
- // Must return a result for interpreter or compiler. In SSE
- // mode, results are returned in xmm0 and the FPU stack must
- // be empty.
- if (type == T_FLOAT && UseSSE >= 1) {
- // Load ST0
- __ fld_d(Address(rsp, 0));
- // Store as float and empty fpu stack
- __ fstp_s(Address(rsp, 0));
- // and reload
- __ movflt(xmm0, Address(rsp, 0));
- } else if (type == T_DOUBLE && UseSSE >= 2 ) {
- __ movdbl(xmm0, Address(rsp, 0));
- } else {
- // restore ST0
- __ fld_d(Address(rsp, 0));
- }
- // and pop the temp
- __ addptr(rsp, 2 * wordSize);
- __ push(t); // restore return address
- }
- break;
- case T_OBJECT :
- // retrieve result from frame
- __ movptr(rax, Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize));
- // and verify it
- __ verify_oop(rax);
- break;
- default : ShouldNotReachHere();
- }
- __ ret(0); // return from result handler
- return entry;
-}
-
-address TemplateInterpreterGenerator::generate_safept_entry_for(TosState state, address runtime_entry) {
- address entry = __ pc();
- __ push(state);
- __ call_VM(noreg, runtime_entry);
- __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos));
- return entry;
-}
-
-
-// Helpers for commoning out cases in the various type of method entries.
-//
-
-// increment invocation count & check for overflow
-//
-// Note: checking for negative value instead of overflow
-// so we have a 'sticky' overflow test
-//
-// rbx,: method
-// rcx: invocation counter
-//
-void InterpreterGenerator::generate_counter_incr(Label* overflow, Label* profile_method, Label* profile_method_continue) {
- Label done;
- // Note: In tiered we increment either counters in MethodCounters* or in MDO
- // depending if we're profiling or not.
- if (TieredCompilation) {
- int increment = InvocationCounter::count_increment;
- Label no_mdo;
- if (ProfileInterpreter) {
- // Are we profiling?
- __ movptr(rax, Address(rbx, Method::method_data_offset()));
- __ testptr(rax, rax);
- __ jccb(Assembler::zero, no_mdo);
- // Increment counter in the MDO
- const Address mdo_invocation_counter(rax, in_bytes(MethodData::invocation_counter_offset()) +
- in_bytes(InvocationCounter::counter_offset()));
- const Address mask(rax, in_bytes(MethodData::invoke_mask_offset()));
- __ increment_mask_and_jump(mdo_invocation_counter, increment, mask, rcx, false, Assembler::zero, overflow);
- __ jmp(done);
- }
- __ bind(no_mdo);
- // Increment counter in MethodCounters
- const Address invocation_counter(rax,
- MethodCounters::invocation_counter_offset() +
- InvocationCounter::counter_offset());
-
- __ get_method_counters(rbx, rax, done);
- const Address mask(rax, in_bytes(MethodCounters::invoke_mask_offset()));
- __ increment_mask_and_jump(invocation_counter, increment, mask,
- rcx, false, Assembler::zero, overflow);
- __ bind(done);
- } else { // not TieredCompilation
- const Address backedge_counter(rax,
- MethodCounters::backedge_counter_offset() +
- InvocationCounter::counter_offset());
- const Address invocation_counter(rax,
- MethodCounters::invocation_counter_offset() +
- InvocationCounter::counter_offset());
-
- __ get_method_counters(rbx, rax, done);
-
- if (ProfileInterpreter) {
- __ incrementl(Address(rax,
- MethodCounters::interpreter_invocation_counter_offset()));
- }
-
- // Update standard invocation counters
- __ movl(rcx, invocation_counter);
- __ incrementl(rcx, InvocationCounter::count_increment);
- __ movl(invocation_counter, rcx); // save invocation count
-
- __ movl(rax, backedge_counter); // load backedge counter
- __ andl(rax, InvocationCounter::count_mask_value); // mask out the status bits
-
- __ addl(rcx, rax); // add both counters
-
- // profile_method is non-null only for interpreted method so
- // profile_method != NULL == !native_call
- // BytecodeInterpreter only calls for native so code is elided.
-
- if (ProfileInterpreter && profile_method != NULL) {
- // Test to see if we should create a method data oop
- __ movptr(rax, Address(rbx, Method::method_counters_offset()));
- __ cmp32(rcx, Address(rax, in_bytes(MethodCounters::interpreter_profile_limit_offset())));
- __ jcc(Assembler::less, *profile_method_continue);
-
- // if no method data exists, go to profile_method
- __ test_method_data_pointer(rax, *profile_method);
- }
-
- __ movptr(rax, Address(rbx, Method::method_counters_offset()));
- __ cmp32(rcx, Address(rax, in_bytes(MethodCounters::interpreter_invocation_limit_offset())));
- __ jcc(Assembler::aboveEqual, *overflow);
- __ bind(done);
- }
-}
-
-void InterpreterGenerator::generate_counter_overflow(Label* do_continue) {
-
- // Asm interpreter on entry
- // rdi - locals
- // rsi - bcp
- // rbx, - method
- // rdx - cpool
- // rbp, - interpreter frame
-
- // C++ interpreter on entry
- // rsi - new interpreter state pointer
- // rbp - interpreter frame pointer
- // rbx - method
-
- // On return (i.e. jump to entry_point) [ back to invocation of interpreter ]
- // rbx, - method
- // rcx - rcvr (assuming there is one)
- // top of stack return address of interpreter caller
- // rsp - sender_sp
-
- // C++ interpreter only
- // rsi - previous interpreter state pointer
-
- // InterpreterRuntime::frequency_counter_overflow takes one argument
- // indicating if the counter overflow occurs at a backwards branch (non-NULL bcp).
- // The call returns the address of the verified entry point for the method or NULL
- // if the compilation did not complete (either went background or bailed out).
- __ movptr(rax, (intptr_t)false);
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), rax);
-
- __ movptr(rbx, Address(rbp, method_offset)); // restore Method*
-
- // Preserve invariant that rsi/rdi contain bcp/locals of sender frame
- // and jump to the interpreted entry.
- __ jmp(*do_continue, relocInfo::none);
-
-}
-
-void InterpreterGenerator::generate_stack_overflow_check(void) {
- // see if we've got enough room on the stack for locals plus overhead.
- // the expression stack grows down incrementally, so the normal guard
- // page mechanism will work for that.
- //
- // Registers live on entry:
- //
- // Asm interpreter
- // rdx: number of additional locals this frame needs (what we must check)
- // rbx,: Method*
-
- // destroyed on exit
- // rax,
-
- // NOTE: since the additional locals are also always pushed (wasn't obvious in
- // generate_fixed_frame) so the guard should work for them too.
- //
-
- // monitor entry size: see picture of stack in frame_x86.hpp
- const int entry_size = frame::interpreter_frame_monitor_size() * wordSize;
-
- // total overhead size: entry_size + (saved rbp, thru expr stack bottom).
- // be sure to change this if you add/subtract anything to/from the overhead area
- const int overhead_size = -(frame::interpreter_frame_initial_sp_offset*wordSize) + entry_size;
-
- const int page_size = os::vm_page_size();
-
- Label after_frame_check;
-
- // see if the frame is greater than one page in size. If so,
- // then we need to verify there is enough stack space remaining
- // for the additional locals.
- __ cmpl(rdx, (page_size - overhead_size)/Interpreter::stackElementSize);
- __ jcc(Assembler::belowEqual, after_frame_check);
-
- // compute rsp as if this were going to be the last frame on
- // the stack before the red zone
-
- Label after_frame_check_pop;
-
- __ push(rsi);
-
- const Register thread = rsi;
-
- __ get_thread(thread);
-
- const Address stack_base(thread, Thread::stack_base_offset());
- const Address stack_size(thread, Thread::stack_size_offset());
-
- // locals + overhead, in bytes
- __ lea(rax, Address(noreg, rdx, Interpreter::stackElementScale(), overhead_size));
-
-#ifdef ASSERT
- Label stack_base_okay, stack_size_okay;
- // verify that thread stack base is non-zero
- __ cmpptr(stack_base, (int32_t)NULL_WORD);
- __ jcc(Assembler::notEqual, stack_base_okay);
- __ stop("stack base is zero");
- __ bind(stack_base_okay);
- // verify that thread stack size is non-zero
- __ cmpptr(stack_size, 0);
- __ jcc(Assembler::notEqual, stack_size_okay);
- __ stop("stack size is zero");
- __ bind(stack_size_okay);
-#endif
-
- // Add stack base to locals and subtract stack size
- __ addptr(rax, stack_base);
- __ subptr(rax, stack_size);
-
- // Use the maximum number of pages we might bang.
- const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages :
- (StackRedPages+StackYellowPages);
- __ addptr(rax, max_pages * page_size);
-
- // check against the current stack bottom
- __ cmpptr(rsp, rax);
- __ jcc(Assembler::above, after_frame_check_pop);
-
- __ pop(rsi); // get saved bcp / (c++ prev state ).
-
- // Restore sender's sp as SP. This is necessary if the sender's
- // frame is an extended compiled frame (see gen_c2i_adapter())
- // and safer anyway in case of JSR292 adaptations.
-
- __ pop(rax); // return address must be moved if SP is changed
- __ mov(rsp, rsi);
- __ push(rax);
-
- // Note: the restored frame is not necessarily interpreted.
- // Use the shared runtime version of the StackOverflowError.
- assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "stub not yet generated");
- __ jump(ExternalAddress(StubRoutines::throw_StackOverflowError_entry()));
- // all done with frame size check
- __ bind(after_frame_check_pop);
- __ pop(rsi);
-
- __ bind(after_frame_check);
-}
-
-// Allocate monitor and lock method (asm interpreter)
-// rbx, - Method*
-//
-void TemplateInterpreterGenerator::lock_method() {
- // synchronize method
- const Address access_flags (rbx, Method::access_flags_offset());
- const Address monitor_block_top (rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize);
- const int entry_size = frame::interpreter_frame_monitor_size() * wordSize;
-
- #ifdef ASSERT
- { Label L;
- __ movl(rax, access_flags);
- __ testl(rax, JVM_ACC_SYNCHRONIZED);
- __ jcc(Assembler::notZero, L);
- __ stop("method doesn't need synchronization");
- __ bind(L);
- }
- #endif // ASSERT
- // get synchronization object
- { Label done;
- const int mirror_offset = in_bytes(Klass::java_mirror_offset());
- __ movl(rax, access_flags);
- __ testl(rax, JVM_ACC_STATIC);
- __ movptr(rax, Address(rdi, Interpreter::local_offset_in_bytes(0))); // get receiver (assume this is frequent case)
- __ jcc(Assembler::zero, done);
- __ movptr(rax, Address(rbx, Method::const_offset()));
- __ movptr(rax, Address(rax, ConstMethod::constants_offset()));
- __ movptr(rax, Address(rax, ConstantPool::pool_holder_offset_in_bytes()));
- __ movptr(rax, Address(rax, mirror_offset));
- __ bind(done);
- }
- // add space for monitor & lock
- __ subptr(rsp, entry_size); // add space for a monitor entry
- __ movptr(monitor_block_top, rsp); // set new monitor block top
- __ movptr(Address(rsp, BasicObjectLock::obj_offset_in_bytes()), rax); // store object
- __ mov(rdx, rsp); // object address
- __ lock_object(rdx);
-}
-
-//
-// Generate a fixed interpreter frame. This is identical setup for interpreted methods
-// and for native methods hence the shared code.
-
-void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) {
- // initialize fixed part of activation frame
- __ push(rax); // save return address
- __ enter(); // save old & set new rbp,
-
-
- __ push(rsi); // set sender sp
- __ push((int32_t)NULL_WORD); // leave last_sp as null
- __ movptr(rsi, Address(rbx,Method::const_offset())); // get ConstMethod*
- __ lea(rsi, Address(rsi,ConstMethod::codes_offset())); // get codebase
- __ push(rbx); // save Method*
- if (ProfileInterpreter) {
- Label method_data_continue;
- __ movptr(rdx, Address(rbx, in_bytes(Method::method_data_offset())));
- __ testptr(rdx, rdx);
- __ jcc(Assembler::zero, method_data_continue);
- __ addptr(rdx, in_bytes(MethodData::data_offset()));
- __ bind(method_data_continue);
- __ push(rdx); // set the mdp (method data pointer)
- } else {
- __ push(0);
- }
-
- __ movptr(rdx, Address(rbx, Method::const_offset()));
- __ movptr(rdx, Address(rdx, ConstMethod::constants_offset()));
- __ movptr(rdx, Address(rdx, ConstantPool::cache_offset_in_bytes()));
- __ push(rdx); // set constant pool cache
- __ push(rdi); // set locals pointer
- if (native_call) {
- __ push(0); // no bcp
- } else {
- __ push(rsi); // set bcp
- }
- __ push(0); // reserve word for pointer to expression stack bottom
- __ movptr(Address(rsp, 0), rsp); // set expression stack bottom
-}
-
-
-// Method entry for java.lang.ref.Reference.get.
-address InterpreterGenerator::generate_Reference_get_entry(void) {
-#if INCLUDE_ALL_GCS
- // Code: _aload_0, _getfield, _areturn
- // parameter size = 1
- //
- // The code that gets generated by this routine is split into 2 parts:
- // 1. The "intrinsified" code for G1 (or any SATB based GC),
- // 2. The slow path - which is an expansion of the regular method entry.
- //
- // Notes:-
- // * In the G1 code we do not check whether we need to block for
- // a safepoint. If G1 is enabled then we must execute the specialized
- // code for Reference.get (except when the Reference object is null)
- // so that we can log the value in the referent field with an SATB
- // update buffer.
- // If the code for the getfield template is modified so that the
- // G1 pre-barrier code is executed when the current method is
- // Reference.get() then going through the normal method entry
- // will be fine.
- // * The G1 code below can, however, check the receiver object (the instance
- // of java.lang.Reference) and jump to the slow path if null. If the
- // Reference object is null then we obviously cannot fetch the referent
- // and so we don't need to call the G1 pre-barrier. Thus we can use the
- // regular method entry code to generate the NPE.
- //
- // This code is based on generate_accessor_enty.
-
- // rbx,: Method*
- // rcx: receiver (preserve for slow entry into asm interpreter)
-
- // rsi: senderSP must preserved for slow path, set SP to it on fast path
-
- address entry = __ pc();
-
- const int referent_offset = java_lang_ref_Reference::referent_offset;
- guarantee(referent_offset > 0, "referent offset not initialized");
-
- if (UseG1GC) {
- Label slow_path;
-
- // Check if local 0 != NULL
- // If the receiver is null then it is OK to jump to the slow path.
- __ movptr(rax, Address(rsp, wordSize));
- __ testptr(rax, rax);
- __ jcc(Assembler::zero, slow_path);
-
- // rax: local 0 (must be preserved across the G1 barrier call)
- //
- // rbx: method (at this point it's scratch)
- // rcx: receiver (at this point it's scratch)
- // rdx: scratch
- // rdi: scratch
- //
- // rsi: sender sp
-
- // Preserve the sender sp in case the pre-barrier
- // calls the runtime
- __ push(rsi);
-
- // Load the value of the referent field.
- const Address field_address(rax, referent_offset);
- __ movptr(rax, field_address);
-
- // Generate the G1 pre-barrier code to log the value of
- // the referent field in an SATB buffer.
- __ get_thread(rcx);
- __ g1_write_barrier_pre(noreg /* obj */,
- rax /* pre_val */,
- rcx /* thread */,
- rbx /* tmp */,
- true /* tosca_save */,
- true /* expand_call */);
-
- // _areturn
- __ pop(rsi); // get sender sp
- __ pop(rdi); // get return address
- __ mov(rsp, rsi); // set sp to sender sp
- __ jmp(rdi);
-
- __ bind(slow_path);
- __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::zerolocals));
- return entry;
- }
-#endif // INCLUDE_ALL_GCS
-
- // If G1 is not enabled then attempt to go through the accessor entry point
- // Reference.get is an accessor
- return NULL;
-}
-
-/**
- * Method entry for static native methods:
- * int java.util.zip.CRC32.update(int crc, int b)
- */
-address InterpreterGenerator::generate_CRC32_update_entry() {
- if (UseCRC32Intrinsics) {
- address entry = __ pc();
-
- // rbx: Method*
- // rsi: senderSP must preserved for slow path, set SP to it on fast path
- // rdx: scratch
- // rdi: scratch
-
- Label slow_path;
- // If we need a safepoint check, generate full interpreter entry.
- ExternalAddress state(SafepointSynchronize::address_of_state());
- __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()),
- SafepointSynchronize::_not_synchronized);
- __ jcc(Assembler::notEqual, slow_path);
-
- // We don't generate local frame and don't align stack because
- // we call stub code and there is no safepoint on this path.
-
- // Load parameters
- const Register crc = rax; // crc
- const Register val = rdx; // source java byte value
- const Register tbl = rdi; // scratch
-
- // Arguments are reversed on java expression stack
- __ movl(val, Address(rsp, wordSize)); // byte value
- __ movl(crc, Address(rsp, 2*wordSize)); // Initial CRC
-
- __ lea(tbl, ExternalAddress(StubRoutines::crc_table_addr()));
- __ notl(crc); // ~crc
- __ update_byte_crc32(crc, val, tbl);
- __ notl(crc); // ~crc
- // result in rax
-
- // _areturn
- __ pop(rdi); // get return address
- __ mov(rsp, rsi); // set sp to sender sp
- __ jmp(rdi);
-
- // generate a vanilla native entry as the slow path
- __ bind(slow_path);
- __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::native));
- return entry;
- }
- return NULL;
-}
-
-/**
- * Method entry for static native methods:
- * int java.util.zip.CRC32.updateBytes(int crc, byte[] b, int off, int len)
- * int java.util.zip.CRC32.updateByteBuffer(int crc, long buf, int off, int len)
- */
-address InterpreterGenerator::generate_CRC32_updateBytes_entry(AbstractInterpreter::MethodKind kind) {
- if (UseCRC32Intrinsics) {
- address entry = __ pc();
-
- // rbx,: Method*
- // rsi: senderSP must preserved for slow path, set SP to it on fast path
- // rdx: scratch
- // rdi: scratch
-
- Label slow_path;
- // If we need a safepoint check, generate full interpreter entry.
- ExternalAddress state(SafepointSynchronize::address_of_state());
- __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()),
- SafepointSynchronize::_not_synchronized);
- __ jcc(Assembler::notEqual, slow_path);
-
- // We don't generate local frame and don't align stack because
- // we call stub code and there is no safepoint on this path.
-
- // Load parameters
- const Register crc = rax; // crc
- const Register buf = rdx; // source java byte array address
- const Register len = rdi; // length
-
- // value x86_32
- // interp. arg ptr ESP + 4
- // int java.util.zip.CRC32.updateBytes(int crc, byte[] b, int off, int len)
- // 3 2 1 0
- // int java.util.zip.CRC32.updateByteBuffer(int crc, long buf, int off, int len)
- // 4 2,3 1 0
-
- // Arguments are reversed on java expression stack
- __ movl(len, Address(rsp, 4 + 0)); // Length
- // Calculate address of start element
- if (kind == Interpreter::java_util_zip_CRC32_updateByteBuffer) {
- __ movptr(buf, Address(rsp, 4 + 2 * wordSize)); // long buf
- __ addptr(buf, Address(rsp, 4 + 1 * wordSize)); // + offset
- __ movl(crc, Address(rsp, 4 + 4 * wordSize)); // Initial CRC
- } else {
- __ movptr(buf, Address(rsp, 4 + 2 * wordSize)); // byte[] array
- __ addptr(buf, arrayOopDesc::base_offset_in_bytes(T_BYTE)); // + header size
- __ addptr(buf, Address(rsp, 4 + 1 * wordSize)); // + offset
- __ movl(crc, Address(rsp, 4 + 3 * wordSize)); // Initial CRC
- }
-
- __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, StubRoutines::updateBytesCRC32()), crc, buf, len);
- // result in rax
-
- // _areturn
- __ pop(rdi); // get return address
- __ mov(rsp, rsi); // set sp to sender sp
- __ jmp(rdi);
-
- // generate a vanilla native entry as the slow path
- __ bind(slow_path);
- __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::native));
- return entry;
- }
- return NULL;
-}
-
-/**
-* Method entry for static native methods:
-* int java.util.zip.CRC32C.updateBytes(int crc, byte[] b, int off, int end)
-* int java.util.zip.CRC32C.updateByteBuffer(int crc, long address, int off, int end)
-*/
-address InterpreterGenerator::generate_CRC32C_updateBytes_entry(AbstractInterpreter::MethodKind kind) {
- if (UseCRC32CIntrinsics) {
- address entry = __ pc();
- // Load parameters
- const Register crc = rax; // crc
- const Register buf = rcx; // source java byte array address
- const Register len = rdx; // length
- const Register end = len;
-
- // value x86_32
- // interp. arg ptr ESP + 4
- // int java.util.zip.CRC32.updateBytes(int crc, byte[] b, int off, int end)
- // 3 2 1 0
- // int java.util.zip.CRC32.updateByteBuffer(int crc, long address, int off, int end)
- // 4 2,3 1 0
-
- // Arguments are reversed on java expression stack
- __ movl(end, Address(rsp, 4 + 0)); // end
- __ subl(len, Address(rsp, 4 + 1 * wordSize)); // end - offset == length
- // Calculate address of start element
- if (kind == Interpreter::java_util_zip_CRC32C_updateDirectByteBuffer) {
- __ movptr(buf, Address(rsp, 4 + 2 * wordSize)); // long address
- __ addptr(buf, Address(rsp, 4 + 1 * wordSize)); // + offset
- __ movl(crc, Address(rsp, 4 + 4 * wordSize)); // Initial CRC
- } else {
- __ movptr(buf, Address(rsp, 4 + 2 * wordSize)); // byte[] array
- __ addptr(buf, arrayOopDesc::base_offset_in_bytes(T_BYTE)); // + header size
- __ addptr(buf, Address(rsp, 4 + 1 * wordSize)); // + offset
- __ movl(crc, Address(rsp, 4 + 3 * wordSize)); // Initial CRC
- }
- __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, StubRoutines::updateBytesCRC32C()), crc, buf, len);
- // result in rax
- // _areturn
- __ pop(rdi); // get return address
- __ mov(rsp, rsi); // set sp to sender sp
- __ jmp(rdi);
-
- return entry;
- }
- return NULL;
-}
-
-/**
- * Method entry for static native method:
- * java.lang.Float.intBitsToFloat(int bits)
- */
-address InterpreterGenerator::generate_Float_intBitsToFloat_entry() {
- if (UseSSE >= 1) {
- address entry = __ pc();
-
- // rsi: the sender's SP
-
- // Skip safepoint check (compiler intrinsic versions of this method
- // do not perform safepoint checks either).
-
- // Load 'bits' into xmm0 (interpreter returns results in xmm0)
- __ movflt(xmm0, Address(rsp, wordSize));
-
- // Return
- __ pop(rdi); // get return address
- __ mov(rsp, rsi); // set rsp to the sender's SP
- __ jmp(rdi);
- return entry;
- }
-
- return NULL;
-}
-
-/**
- * Method entry for static native method:
- * java.lang.Float.floatToRawIntBits(float value)
- */
-address InterpreterGenerator::generate_Float_floatToRawIntBits_entry() {
- if (UseSSE >= 1) {
- address entry = __ pc();
-
- // rsi: the sender's SP
-
- // Skip safepoint check (compiler intrinsic versions of this method
- // do not perform safepoint checks either).
-
- // Load the parameter (a floating-point value) into rax.
- __ movl(rax, Address(rsp, wordSize));
-
- // Return
- __ pop(rdi); // get return address
- __ mov(rsp, rsi); // set rsp to the sender's SP
- __ jmp(rdi);
- return entry;
- }
-
- return NULL;
-}
-
-
-/**
- * Method entry for static native method:
- * java.lang.Double.longBitsToDouble(long bits)
- */
-address InterpreterGenerator::generate_Double_longBitsToDouble_entry() {
- if (UseSSE >= 2) {
- address entry = __ pc();
-
- // rsi: the sender's SP
-
- // Skip safepoint check (compiler intrinsic versions of this method
- // do not perform safepoint checks either).
-
- // Load 'bits' into xmm0 (interpreter returns results in xmm0)
- __ movdbl(xmm0, Address(rsp, wordSize));
-
- // Return
- __ pop(rdi); // get return address
- __ mov(rsp, rsi); // set rsp to the sender's SP
- __ jmp(rdi);
- return entry;
- }
-
- return NULL;
-}
-
-/**
- * Method entry for static native method:
- * java.lang.Double.doubleToRawLongBits(double value)
- */
-address InterpreterGenerator::generate_Double_doubleToRawLongBits_entry() {
- if (UseSSE >= 2) {
- address entry = __ pc();
-
- // rsi: the sender's SP
-
- // Skip safepoint check (compiler intrinsic versions of this method
- // do not perform safepoint checks either).
-
- // Load the parameter (a floating-point value) into rax.
- __ movl(rdx, Address(rsp, 2*wordSize));
- __ movl(rax, Address(rsp, wordSize));
-
- // Return
- __ pop(rdi); // get return address
- __ mov(rsp, rsi); // set rsp to the sender's SP
- __ jmp(rdi);
- return entry;
- }
-
- return NULL;
-}
-
-//
-// Interpreter stub for calling a native method. (asm interpreter)
-// This sets up a somewhat different looking stack for calling the native method
-// than the typical interpreter frame setup.
-//
-
-address InterpreterGenerator::generate_native_entry(bool synchronized) {
- // determine code generation flags
- bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods;
-
- // rbx,: Method*
- // rsi: sender sp
- // rsi: previous interpreter state (C++ interpreter) must preserve
- address entry_point = __ pc();
-
- const Address constMethod (rbx, Method::const_offset());
- const Address access_flags (rbx, Method::access_flags_offset());
- const Address size_of_parameters(rcx, ConstMethod::size_of_parameters_offset());
-
- // get parameter size (always needed)
- __ movptr(rcx, constMethod);
- __ load_unsigned_short(rcx, size_of_parameters);
-
- // native calls don't need the stack size check since they have no expression stack
- // and the arguments are already on the stack and we only add a handful of words
- // to the stack
-
- // rbx,: Method*
- // rcx: size of parameters
- // rsi: sender sp
-
- __ pop(rax); // get return address
- // for natives the size of locals is zero
-
- // compute beginning of parameters (rdi)
- __ lea(rdi, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize));
-
-
- // add 2 zero-initialized slots for native calls
- // NULL result handler
- __ push((int32_t)NULL_WORD);
- // NULL oop temp (mirror or jni oop result)
- __ push((int32_t)NULL_WORD);
-
- // initialize fixed part of activation frame
- generate_fixed_frame(true);
-
- // make sure method is native & not abstract
-#ifdef ASSERT
- __ movl(rax, access_flags);
- {
- Label L;
- __ testl(rax, JVM_ACC_NATIVE);
- __ jcc(Assembler::notZero, L);
- __ stop("tried to execute non-native method as native");
- __ bind(L);
- }
- { Label L;
- __ testl(rax, JVM_ACC_ABSTRACT);
- __ jcc(Assembler::zero, L);
- __ stop("tried to execute abstract method in interpreter");
- __ bind(L);
- }
-#endif
-
- // Since at this point in the method invocation the exception handler
- // would try to exit the monitor of synchronized methods which hasn't
- // been entered yet, we set the thread local variable
- // _do_not_unlock_if_synchronized to true. The remove_activation will
- // check this flag.
-
- __ get_thread(rax);
- const Address do_not_unlock_if_synchronized(rax,
- in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()));
- __ movbool(do_not_unlock_if_synchronized, true);
-
- // increment invocation count & check for overflow
- Label invocation_counter_overflow;
- if (inc_counter) {
- generate_counter_incr(&invocation_counter_overflow, NULL, NULL);
- }
-
- Label continue_after_compile;
- __ bind(continue_after_compile);
-
- bang_stack_shadow_pages(true);
-
- // reset the _do_not_unlock_if_synchronized flag
- __ get_thread(rax);
- __ movbool(do_not_unlock_if_synchronized, false);
-
- // check for synchronized methods
- // Must happen AFTER invocation_counter check and stack overflow check,
- // so method is not locked if overflows.
- //
- if (synchronized) {
- lock_method();
- } else {
- // no synchronization necessary
-#ifdef ASSERT
- { Label L;
- __ movl(rax, access_flags);
- __ testl(rax, JVM_ACC_SYNCHRONIZED);
- __ jcc(Assembler::zero, L);
- __ stop("method needs synchronization");
- __ bind(L);
- }
-#endif
- }
-
- // start execution
-#ifdef ASSERT
- { Label L;
- const Address monitor_block_top (rbp,
- frame::interpreter_frame_monitor_block_top_offset * wordSize);
- __ movptr(rax, monitor_block_top);
- __ cmpptr(rax, rsp);
- __ jcc(Assembler::equal, L);
- __ stop("broken stack frame setup in interpreter");
- __ bind(L);
- }
-#endif
-
- // jvmti/dtrace support
- __ notify_method_entry();
-
- // work registers
- const Register method = rbx;
- const Register thread = rdi;
- const Register t = rcx;
-
- // allocate space for parameters
- __ get_method(method);
- __ movptr(t, Address(method, Method::const_offset()));
- __ load_unsigned_short(t, Address(t, ConstMethod::size_of_parameters_offset()));
-
- __ shlptr(t, Interpreter::logStackElementSize);
- __ addptr(t, 2*wordSize); // allocate two more slots for JNIEnv and possible mirror
- __ subptr(rsp, t);
- __ andptr(rsp, -(StackAlignmentInBytes)); // gcc needs 16 byte aligned stacks to do XMM intrinsics
-
- // get signature handler
- { Label L;
- __ movptr(t, Address(method, Method::signature_handler_offset()));
- __ testptr(t, t);
- __ jcc(Assembler::notZero, L);
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), method);
- __ get_method(method);
- __ movptr(t, Address(method, Method::signature_handler_offset()));
- __ bind(L);
- }
-
- // call signature handler
- assert(InterpreterRuntime::SignatureHandlerGenerator::from() == rdi, "adjust this code");
- assert(InterpreterRuntime::SignatureHandlerGenerator::to () == rsp, "adjust this code");
- assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == t , "adjust this code");
- // The generated handlers do not touch RBX (the method oop).
- // However, large signatures cannot be cached and are generated
- // each time here. The slow-path generator will blow RBX
- // sometime, so we must reload it after the call.
- __ call(t);
- __ get_method(method); // slow path call blows RBX on DevStudio 5.0
-
- // result handler is in rax,
- // set result handler
- __ movptr(Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize), rax);
-
- // pass mirror handle if static call
- { Label L;
- const int mirror_offset = in_bytes(Klass::java_mirror_offset());
- __ movl(t, Address(method, Method::access_flags_offset()));
- __ testl(t, JVM_ACC_STATIC);
- __ jcc(Assembler::zero, L);
- // get mirror
- __ movptr(t, Address(method, Method:: const_offset()));
- __ movptr(t, Address(t, ConstMethod::constants_offset()));
- __ movptr(t, Address(t, ConstantPool::pool_holder_offset_in_bytes()));
- __ movptr(t, Address(t, mirror_offset));
- // copy mirror into activation frame
- __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize), t);
- // pass handle to mirror
- __ lea(t, Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize));
- __ movptr(Address(rsp, wordSize), t);
- __ bind(L);
- }
-
- // get native function entry point
- { Label L;
- __ movptr(rax, Address(method, Method::native_function_offset()));
- ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry());
- __ cmpptr(rax, unsatisfied.addr());
- __ jcc(Assembler::notEqual, L);
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::prepare_native_call), method);
- __ get_method(method);
- __ movptr(rax, Address(method, Method::native_function_offset()));
- __ bind(L);
- }
-
- // pass JNIEnv
- __ get_thread(thread);
- __ lea(t, Address(thread, JavaThread::jni_environment_offset()));
- __ movptr(Address(rsp, 0), t);
-
- // set_last_Java_frame_before_call
- // It is enough that the pc()
- // points into the right code segment. It does not have to be the correct return pc.
- __ set_last_Java_frame(thread, noreg, rbp, __ pc());
-
- // change thread state
-#ifdef ASSERT
- { Label L;
- __ movl(t, Address(thread, JavaThread::thread_state_offset()));
- __ cmpl(t, _thread_in_Java);
- __ jcc(Assembler::equal, L);
- __ stop("Wrong thread state in native stub");
- __ bind(L);
- }
-#endif
-
- // Change state to native
- __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native);
- __ call(rax);
-
- // result potentially in rdx:rax or ST0
-
- // Verify or restore cpu control state after JNI call
- __ restore_cpu_control_state_after_jni();
-
- // save potential result in ST(0) & rdx:rax
- // (if result handler is the T_FLOAT or T_DOUBLE handler, result must be in ST0 -
- // the check is necessary to avoid potential Intel FPU overflow problems by saving/restoring 'empty' FPU registers)
- // It is safe to do this push because state is _thread_in_native and return address will be found
- // via _last_native_pc and not via _last_jave_sp
-
- // NOTE: the order of theses push(es) is known to frame::interpreter_frame_result.
- // If the order changes or anything else is added to the stack the code in
- // interpreter_frame_result will have to be changed.
-
- { Label L;
- Label push_double;
- ExternalAddress float_handler(AbstractInterpreter::result_handler(T_FLOAT));
- ExternalAddress double_handler(AbstractInterpreter::result_handler(T_DOUBLE));
- __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize),
- float_handler.addr());
- __ jcc(Assembler::equal, push_double);
- __ cmpptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset + 1)*wordSize),
- double_handler.addr());
- __ jcc(Assembler::notEqual, L);
- __ bind(push_double);
- __ push_d(); // FP values are returned using the FPU, so push FPU contents (even if UseSSE > 0).
- __ bind(L);
- }
- __ push(ltos);
-
- // change thread state
- __ get_thread(thread);
- __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native_trans);
- if(os::is_MP()) {
- if (UseMembar) {
- // Force this write out before the read below
- __ membar(Assembler::Membar_mask_bits(
- Assembler::LoadLoad | Assembler::LoadStore |
- Assembler::StoreLoad | Assembler::StoreStore));
- } else {
- // Write serialization page so VM thread can do a pseudo remote membar.
- // We use the current thread pointer to calculate a thread specific
- // offset to write to within the page. This minimizes bus traffic
- // due to cache line collision.
- __ serialize_memory(thread, rcx);
- }
- }
-
- if (AlwaysRestoreFPU) {
- // Make sure the control word is correct.
- __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std()));
- }
-
- // check for safepoint operation in progress and/or pending suspend requests
- { Label Continue;
-
- __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()),
- SafepointSynchronize::_not_synchronized);
-
- Label L;
- __ jcc(Assembler::notEqual, L);
- __ cmpl(Address(thread, JavaThread::suspend_flags_offset()), 0);
- __ jcc(Assembler::equal, Continue);
- __ bind(L);
-
- // Don't use call_VM as it will see a possible pending exception and forward it
- // and never return here preventing us from clearing _last_native_pc down below.
- // Also can't use call_VM_leaf either as it will check to see if rsi & rdi are
- // preserved and correspond to the bcp/locals pointers. So we do a runtime call
- // by hand.
- //
- __ push(thread);
- __ call(RuntimeAddress(CAST_FROM_FN_PTR(address,
- JavaThread::check_special_condition_for_native_trans)));
- __ increment(rsp, wordSize);
- __ get_thread(thread);
-
- __ bind(Continue);
- }
-
- // change thread state
- __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_Java);
-
- __ reset_last_Java_frame(thread, true, true);
-
- // reset handle block
- __ movptr(t, Address(thread, JavaThread::active_handles_offset()));
- __ movl(Address(t, JNIHandleBlock::top_offset_in_bytes()), NULL_WORD);
-
- // If result was an oop then unbox and save it in the frame
- { Label L;
- Label no_oop, store_result;
- ExternalAddress handler(AbstractInterpreter::result_handler(T_OBJECT));
- __ cmpptr(Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize),
- handler.addr());
- __ jcc(Assembler::notEqual, no_oop);
- __ cmpptr(Address(rsp, 0), (int32_t)NULL_WORD);
- __ pop(ltos);
- __ testptr(rax, rax);
- __ jcc(Assembler::zero, store_result);
- // unbox
- __ movptr(rax, Address(rax, 0));
- __ bind(store_result);
- __ movptr(Address(rbp, (frame::interpreter_frame_oop_temp_offset)*wordSize), rax);
- // keep stack depth as expected by pushing oop which will eventually be discarded
- __ push(ltos);
- __ bind(no_oop);
- }
-
- {
- Label no_reguard;
- __ cmpl(Address(thread, JavaThread::stack_guard_state_offset()), JavaThread::stack_guard_yellow_disabled);
- __ jcc(Assembler::notEqual, no_reguard);
-
- __ pusha();
- __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages)));
- __ popa();
-
- __ bind(no_reguard);
- }
-
- // restore rsi to have legal interpreter frame,
- // i.e., bci == 0 <=> rsi == code_base()
- // Can't call_VM until bcp is within reasonable.
- __ get_method(method); // method is junk from thread_in_native to now.
- __ movptr(rsi, Address(method,Method::const_offset())); // get ConstMethod*
- __ lea(rsi, Address(rsi,ConstMethod::codes_offset())); // get codebase
-
- // handle exceptions (exception handling will handle unlocking!)
- { Label L;
- __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD);
- __ jcc(Assembler::zero, L);
- // Note: At some point we may want to unify this with the code used in call_VM_base();
- // i.e., we should use the StubRoutines::forward_exception code. For now this
- // doesn't work here because the rsp is not correctly set at this point.
- __ MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_pending_exception));
- __ should_not_reach_here();
- __ bind(L);
- }
-
- // do unlocking if necessary
- { Label L;
- __ movl(t, Address(method, Method::access_flags_offset()));
- __ testl(t, JVM_ACC_SYNCHRONIZED);
- __ jcc(Assembler::zero, L);
- // the code below should be shared with interpreter macro assembler implementation
- { Label unlock;
- // BasicObjectLock will be first in list, since this is a synchronized method. However, need
- // to check that the object has not been unlocked by an explicit monitorexit bytecode.
- const Address monitor(rbp, frame::interpreter_frame_initial_sp_offset * wordSize - (int)sizeof(BasicObjectLock));
-
- __ lea(rdx, monitor); // address of first monitor
-
- __ movptr(t, Address(rdx, BasicObjectLock::obj_offset_in_bytes()));
- __ testptr(t, t);
- __ jcc(Assembler::notZero, unlock);
-
- // Entry already unlocked, need to throw exception
- __ MacroAssembler::call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception));
- __ should_not_reach_here();
-
- __ bind(unlock);
- __ unlock_object(rdx);
- }
- __ bind(L);
- }
-
- // jvmti/dtrace support
- // Note: This must happen _after_ handling/throwing any exceptions since
- // the exception handler code notifies the runtime of method exits
- // too. If this happens before, method entry/exit notifications are
- // not properly paired (was bug - gri 11/22/99).
- __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI);
-
- // restore potential result in rdx:rax, call result handler to restore potential result in ST0 & handle result
- __ pop(ltos);
- __ movptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize));
- __ call(t);
-
- // remove activation
- __ movptr(t, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp
- __ leave(); // remove frame anchor
- __ pop(rdi); // get return address
- __ mov(rsp, t); // set sp to sender sp
- __ jmp(rdi);
-
- if (inc_counter) {
- // Handle overflow of counter and compile method
- __ bind(invocation_counter_overflow);
- generate_counter_overflow(&continue_after_compile);
- }
-
- return entry_point;
-}
-
-//
-// Generic interpreted method entry to (asm) interpreter
-//
-address InterpreterGenerator::generate_normal_entry(bool synchronized) {
- // determine code generation flags
- bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods;
-
- // rbx,: Method*
- // rsi: sender sp
- address entry_point = __ pc();
-
- const Address constMethod (rbx, Method::const_offset());
- const Address access_flags (rbx, Method::access_flags_offset());
- const Address size_of_parameters(rdx, ConstMethod::size_of_parameters_offset());
- const Address size_of_locals (rdx, ConstMethod::size_of_locals_offset());
-
- // get parameter size (always needed)
- __ movptr(rdx, constMethod);
- __ load_unsigned_short(rcx, size_of_parameters);
-
- // rbx,: Method*
- // rcx: size of parameters
-
- // rsi: sender_sp (could differ from sp+wordSize if we were called via c2i )
-
- __ load_unsigned_short(rdx, size_of_locals); // get size of locals in words
- __ subl(rdx, rcx); // rdx = no. of additional locals
-
- // see if we've got enough room on the stack for locals plus overhead.
- generate_stack_overflow_check();
-
- // get return address
- __ pop(rax);
-
- // compute beginning of parameters (rdi)
- __ lea(rdi, Address(rsp, rcx, Interpreter::stackElementScale(), -wordSize));
-
- // rdx - # of additional locals
- // allocate space for locals
- // explicitly initialize locals
- {
- Label exit, loop;
- __ testl(rdx, rdx);
- __ jcc(Assembler::lessEqual, exit); // do nothing if rdx <= 0
- __ bind(loop);
- __ push((int32_t)NULL_WORD); // initialize local variables
- __ decrement(rdx); // until everything initialized
- __ jcc(Assembler::greater, loop);
- __ bind(exit);
- }
-
- // initialize fixed part of activation frame
- generate_fixed_frame(false);
-
- // make sure method is not native & not abstract
-#ifdef ASSERT
- __ movl(rax, access_flags);
- {
- Label L;
- __ testl(rax, JVM_ACC_NATIVE);
- __ jcc(Assembler::zero, L);
- __ stop("tried to execute native method as non-native");
- __ bind(L);
- }
- { Label L;
- __ testl(rax, JVM_ACC_ABSTRACT);
- __ jcc(Assembler::zero, L);
- __ stop("tried to execute abstract method in interpreter");
- __ bind(L);
- }
-#endif
-
- // Since at this point in the method invocation the exception handler
- // would try to exit the monitor of synchronized methods which hasn't
- // been entered yet, we set the thread local variable
- // _do_not_unlock_if_synchronized to true. The remove_activation will
- // check this flag.
-
- __ get_thread(rax);
- const Address do_not_unlock_if_synchronized(rax,
- in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()));
- __ movbool(do_not_unlock_if_synchronized, true);
-
- __ profile_parameters_type(rax, rcx, rdx);
- // increment invocation count & check for overflow
- Label invocation_counter_overflow;
- Label profile_method;
- Label profile_method_continue;
- if (inc_counter) {
- generate_counter_incr(&invocation_counter_overflow, &profile_method, &profile_method_continue);
- if (ProfileInterpreter) {
- __ bind(profile_method_continue);
- }
- }
- Label continue_after_compile;
- __ bind(continue_after_compile);
-
- bang_stack_shadow_pages(false);
-
- // reset the _do_not_unlock_if_synchronized flag
- __ get_thread(rax);
- __ movbool(do_not_unlock_if_synchronized, false);
-
- // check for synchronized methods
- // Must happen AFTER invocation_counter check and stack overflow check,
- // so method is not locked if overflows.
- //
- if (synchronized) {
- // Allocate monitor and lock method
- lock_method();
- } else {
- // no synchronization necessary
-#ifdef ASSERT
- { Label L;
- __ movl(rax, access_flags);
- __ testl(rax, JVM_ACC_SYNCHRONIZED);
- __ jcc(Assembler::zero, L);
- __ stop("method needs synchronization");
- __ bind(L);
- }
-#endif
- }
-
- // start execution
-#ifdef ASSERT
- { Label L;
- const Address monitor_block_top (rbp,
- frame::interpreter_frame_monitor_block_top_offset * wordSize);
- __ movptr(rax, monitor_block_top);
- __ cmpptr(rax, rsp);
- __ jcc(Assembler::equal, L);
- __ stop("broken stack frame setup in interpreter");
- __ bind(L);
- }
-#endif
-
- // jvmti support
- __ notify_method_entry();
-
- __ dispatch_next(vtos);
-
- // invocation counter overflow
- if (inc_counter) {
- if (ProfileInterpreter) {
- // We have decided to profile this method in the interpreter
- __ bind(profile_method);
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method));
- __ set_method_data_pointer_for_bcp();
- __ get_method(rbx);
- __ jmp(profile_method_continue);
- }
- // Handle overflow of counter and compile method
- __ bind(invocation_counter_overflow);
- generate_counter_overflow(&continue_after_compile);
- }
-
- return entry_point;
-}
-
-
-// These should never be compiled since the interpreter will prefer
-// the compiled version to the intrinsic version.
-bool AbstractInterpreter::can_be_compiled(methodHandle m) {
- switch (method_kind(m)) {
- case Interpreter::java_lang_math_sin : // fall thru
- case Interpreter::java_lang_math_cos : // fall thru
- case Interpreter::java_lang_math_tan : // fall thru
- case Interpreter::java_lang_math_abs : // fall thru
- case Interpreter::java_lang_math_log : // fall thru
- case Interpreter::java_lang_math_log10 : // fall thru
- case Interpreter::java_lang_math_sqrt : // fall thru
- case Interpreter::java_lang_math_pow : // fall thru
- case Interpreter::java_lang_math_exp :
- return false;
- default:
- return true;
- }
-}
-
-// How much stack a method activation needs in words.
-int AbstractInterpreter::size_top_interpreter_activation(Method* method) {
-
- const int stub_code = 4; // see generate_call_stub
- // Save space for one monitor to get into the interpreted method in case
- // the method is synchronized
- int monitor_size = method->is_synchronized() ?
- 1*frame::interpreter_frame_monitor_size() : 0;
-
- // total overhead size: entry_size + (saved rbp, thru expr stack bottom).
- // be sure to change this if you add/subtract anything to/from the overhead area
- const int overhead_size = -frame::interpreter_frame_initial_sp_offset;
-
- const int method_stack = (method->max_locals() + method->max_stack()) *
- Interpreter::stackElementWords;
- return overhead_size + method_stack + stub_code;
-}
-
-//------------------------------------------------------------------------------------------------------------------------
-// Exceptions
-
-void TemplateInterpreterGenerator::generate_throw_exception() {
- // Entry point in previous activation (i.e., if the caller was interpreted)
- Interpreter::_rethrow_exception_entry = __ pc();
- const Register thread = rcx;
-
- // Restore sp to interpreter_frame_last_sp even though we are going
- // to empty the expression stack for the exception processing.
- __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
- // rax,: exception
- // rdx: return address/pc that threw exception
- __ restore_bcp(); // rsi points to call/send
- __ restore_locals();
-
- // Entry point for exceptions thrown within interpreter code
- Interpreter::_throw_exception_entry = __ pc();
- // expression stack is undefined here
- // rax,: exception
- // rsi: exception bcp
- __ verify_oop(rax);
-
- // expression stack must be empty before entering the VM in case of an exception
- __ empty_expression_stack();
- __ empty_FPU_stack();
- // find exception handler address and preserve exception oop
- __ call_VM(rdx, CAST_FROM_FN_PTR(address, InterpreterRuntime::exception_handler_for_exception), rax);
- // rax,: exception handler entry point
- // rdx: preserved exception oop
- // rsi: bcp for exception handler
- __ push_ptr(rdx); // push exception which is now the only value on the stack
- __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!)
-
- // If the exception is not handled in the current frame the frame is removed and
- // the exception is rethrown (i.e. exception continuation is _rethrow_exception).
- //
- // Note: At this point the bci is still the bxi for the instruction which caused
- // the exception and the expression stack is empty. Thus, for any VM calls
- // at this point, GC will find a legal oop map (with empty expression stack).
-
- // In current activation
- // tos: exception
- // rsi: exception bcp
-
- //
- // JVMTI PopFrame support
- //
-
- Interpreter::_remove_activation_preserving_args_entry = __ pc();
- __ empty_expression_stack();
- __ empty_FPU_stack();
- // Set the popframe_processing bit in pending_popframe_condition indicating that we are
- // currently handling popframe, so that call_VMs that may happen later do not trigger new
- // popframe handling cycles.
- __ get_thread(thread);
- __ movl(rdx, Address(thread, JavaThread::popframe_condition_offset()));
- __ orl(rdx, JavaThread::popframe_processing_bit);
- __ movl(Address(thread, JavaThread::popframe_condition_offset()), rdx);
-
- {
- // Check to see whether we are returning to a deoptimized frame.
- // (The PopFrame call ensures that the caller of the popped frame is
- // either interpreted or compiled and deoptimizes it if compiled.)
- // In this case, we can't call dispatch_next() after the frame is
- // popped, but instead must save the incoming arguments and restore
- // them after deoptimization has occurred.
- //
- // Note that we don't compare the return PC against the
- // deoptimization blob's unpack entry because of the presence of
- // adapter frames in C2.
- Label caller_not_deoptimized;
- __ movptr(rdx, Address(rbp, frame::return_addr_offset * wordSize));
- __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::interpreter_contains), rdx);
- __ testl(rax, rax);
- __ jcc(Assembler::notZero, caller_not_deoptimized);
-
- // Compute size of arguments for saving when returning to deoptimized caller
- __ get_method(rax);
- __ movptr(rax, Address(rax, Method::const_offset()));
- __ load_unsigned_short(rax, Address(rax, ConstMethod::size_of_parameters_offset()));
- __ shlptr(rax, Interpreter::logStackElementSize);
- __ restore_locals();
- __ subptr(rdi, rax);
- __ addptr(rdi, wordSize);
- // Save these arguments
- __ get_thread(thread);
- __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, Deoptimization::popframe_preserve_args), thread, rax, rdi);
-
- __ remove_activation(vtos, rdx,
- /* throw_monitor_exception */ false,
- /* install_monitor_exception */ false,
- /* notify_jvmdi */ false);
-
- // Inform deoptimization that it is responsible for restoring these arguments
- __ get_thread(thread);
- __ movl(Address(thread, JavaThread::popframe_condition_offset()), JavaThread::popframe_force_deopt_reexecution_bit);
-
- // Continue in deoptimization handler
- __ jmp(rdx);
-
- __ bind(caller_not_deoptimized);
- }
-
- __ remove_activation(vtos, rdx,
- /* throw_monitor_exception */ false,
- /* install_monitor_exception */ false,
- /* notify_jvmdi */ false);
-
- // Finish with popframe handling
- // A previous I2C followed by a deoptimization might have moved the
- // outgoing arguments further up the stack. PopFrame expects the
- // mutations to those outgoing arguments to be preserved and other
- // constraints basically require this frame to look exactly as
- // though it had previously invoked an interpreted activation with
- // no space between the top of the expression stack (current
- // last_sp) and the top of stack. Rather than force deopt to
- // maintain this kind of invariant all the time we call a small
- // fixup routine to move the mutated arguments onto the top of our
- // expression stack if necessary.
- __ mov(rax, rsp);
- __ movptr(rbx, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize));
- __ get_thread(thread);
- // PC must point into interpreter here
- __ set_last_Java_frame(thread, noreg, rbp, __ pc());
- __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), thread, rax, rbx);
- __ get_thread(thread);
- __ reset_last_Java_frame(thread, true, true);
- // Restore the last_sp and null it out
- __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize));
- __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD);
-
- __ restore_bcp();
- __ restore_locals();
- // The method data pointer was incremented already during
- // call profiling. We have to restore the mdp for the current bcp.
- if (ProfileInterpreter) {
- __ set_method_data_pointer_for_bcp();
- }
-
- // Clear the popframe condition flag
- __ get_thread(thread);
- __ movl(Address(thread, JavaThread::popframe_condition_offset()), JavaThread::popframe_inactive);
-
-#if INCLUDE_JVMTI
- {
- Label L_done;
- const Register local0 = rdi;
-
- __ cmpb(Address(rsi, 0), Bytecodes::_invokestatic);
- __ jcc(Assembler::notEqual, L_done);
-
- // The member name argument must be restored if _invokestatic is re-executed after a PopFrame call.
- // Detect such a case in the InterpreterRuntime function and return the member name argument, or NULL.
-
- __ get_method(rdx);
- __ movptr(rax, Address(local0, 0));
- __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::member_name_arg_or_null), rax, rdx, rsi);
-
- __ testptr(rax, rax);
- __ jcc(Assembler::zero, L_done);
-
- __ movptr(Address(rbx, 0), rax);
- __ bind(L_done);
- }
-#endif // INCLUDE_JVMTI
-
- __ dispatch_next(vtos);
- // end of PopFrame support
-
- Interpreter::_remove_activation_entry = __ pc();
-
- // preserve exception over this code sequence
- __ pop_ptr(rax);
- __ get_thread(thread);
- __ movptr(Address(thread, JavaThread::vm_result_offset()), rax);
- // remove the activation (without doing throws on illegalMonitorExceptions)
- __ remove_activation(vtos, rdx, false, true, false);
- // restore exception
- __ get_thread(thread);
- __ get_vm_result(rax, thread);
-
- // Inbetween activations - previous activation type unknown yet
- // compute continuation point - the continuation point expects
- // the following registers set up:
- //
- // rax: exception
- // rdx: return address/pc that threw exception
- // rsp: expression stack of caller
- // rbp: rbp, of caller
- __ push(rax); // save exception
- __ push(rdx); // save return address
- __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), thread, rdx);
- __ mov(rbx, rax); // save exception handler
- __ pop(rdx); // restore return address
- __ pop(rax); // restore exception
- // Note that an "issuing PC" is actually the next PC after the call
- __ jmp(rbx); // jump to exception handler of caller
-}
-
-
-//
-// JVMTI ForceEarlyReturn support
-//
-address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) {
- address entry = __ pc();
- const Register thread = rcx;
-
- __ restore_bcp();
- __ restore_locals();
- __ empty_expression_stack();
- __ empty_FPU_stack();
- __ load_earlyret_value(state);
-
- __ get_thread(thread);
- __ movptr(rcx, Address(thread, JavaThread::jvmti_thread_state_offset()));
- const Address cond_addr(rcx, JvmtiThreadState::earlyret_state_offset());
-
- // Clear the earlyret state
- __ movl(cond_addr, JvmtiThreadState::earlyret_inactive);
-
- __ remove_activation(state, rsi,
- false, /* throw_monitor_exception */
- false, /* install_monitor_exception */
- true); /* notify_jvmdi */
- __ jmp(rsi);
- return entry;
-} // end of ForceEarlyReturn support
-
-
-//------------------------------------------------------------------------------------------------------------------------
-// Helper for vtos entry point generation
-
-void TemplateInterpreterGenerator::set_vtos_entry_points (Template* t, address& bep, address& cep, address& sep, address& aep, address& iep, address& lep, address& fep, address& dep, address& vep) {
- assert(t->is_valid() && t->tos_in() == vtos, "illegal template");
- Label L;
- fep = __ pc(); __ push(ftos); __ jmp(L);
- dep = __ pc(); __ push(dtos); __ jmp(L);
- lep = __ pc(); __ push(ltos); __ jmp(L);
- aep = __ pc(); __ push(atos); __ jmp(L);
- bep = cep = sep = // fall through
- iep = __ pc(); __ push(itos); // fall through
- vep = __ pc(); __ bind(L); // fall through
- generate_and_dispatch(t);
-}
-
-//------------------------------------------------------------------------------------------------------------------------
-// Generation of individual instructions
-
-// helpers for generate_and_dispatch
-
-
-
-InterpreterGenerator::InterpreterGenerator(StubQueue* code)
- : TemplateInterpreterGenerator(code) {
- generate_all(); // down here so it can be "virtual"
-}
-
-//------------------------------------------------------------------------------------------------------------------------
-
-// Non-product code
-#ifndef PRODUCT
-address TemplateInterpreterGenerator::generate_trace_code(TosState state) {
- address entry = __ pc();
-
- // prepare expression stack
- __ pop(rcx); // pop return address so expression stack is 'pure'
- __ push(state); // save tosca
-
- // pass tosca registers as arguments & call tracer
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode), rcx, rax, rdx);
- __ mov(rcx, rax); // make sure return address is not destroyed by pop(state)
- __ pop(state); // restore tosca
-
- // return
- __ jmp(rcx);
-
- return entry;
-}
-
-
-void TemplateInterpreterGenerator::count_bytecode() {
- __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value));
-}
-
-
-void TemplateInterpreterGenerator::histogram_bytecode(Template* t) {
- __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()]));
-}
-
-
-void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) {
- __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx);
- __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes);
- __ orl(rbx, ((int)t->bytecode()) << BytecodePairHistogram::log2_number_of_codes);
- ExternalAddress table((address) BytecodePairHistogram::_counters);
- Address index(noreg, rbx, Address::times_4);
- __ incrementl(ArrayAddress(table, index));
-}
-
-
-void TemplateInterpreterGenerator::trace_bytecode(Template* t) {
- // Call a little run-time stub to avoid blow-up for each bytecode.
- // The run-time runtime saves the right registers, depending on
- // the tosca in-state for the given template.
- assert(Interpreter::trace_code(t->tos_in()) != NULL,
- "entry must have been generated");
- __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in())));
-}
-
-
-void TemplateInterpreterGenerator::stop_interpreter_at() {
- Label L;
- __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value),
- StopInterpreterAt);
- __ jcc(Assembler::notEqual, L);
- __ int3();
- __ bind(L);
-}
-#endif // !PRODUCT
-#endif // CC_INTERP
--- a/hotspot/src/cpu/x86/vm/templateInterpreter_x86_64.cpp Sat Dec 05 15:17:29 2015 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,1866 +0,0 @@
-/*
- * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- *
- */
-
-#include "precompiled.hpp"
-#include "asm/macroAssembler.hpp"
-#include "interpreter/bytecodeHistogram.hpp"
-#include "interpreter/interpreter.hpp"
-#include "interpreter/interpreterGenerator.hpp"
-#include "interpreter/interpreterRuntime.hpp"
-#include "interpreter/interp_masm.hpp"
-#include "interpreter/templateTable.hpp"
-#include "oops/arrayOop.hpp"
-#include "oops/methodData.hpp"
-#include "oops/method.hpp"
-#include "oops/oop.inline.hpp"
-#include "prims/jvmtiExport.hpp"
-#include "prims/jvmtiThreadState.hpp"
-#include "runtime/arguments.hpp"
-#include "runtime/deoptimization.hpp"
-#include "runtime/frame.inline.hpp"
-#include "runtime/sharedRuntime.hpp"
-#include "runtime/stubRoutines.hpp"
-#include "runtime/synchronizer.hpp"
-#include "runtime/timer.hpp"
-#include "runtime/vframeArray.hpp"
-#include "utilities/debug.hpp"
-#include "utilities/macros.hpp"
-
-#define __ _masm->
-
-#ifndef CC_INTERP
-
-const int method_offset = frame::interpreter_frame_method_offset * wordSize;
-const int bcp_offset = frame::interpreter_frame_bcp_offset * wordSize;
-const int locals_offset = frame::interpreter_frame_locals_offset * wordSize;
-
-//-----------------------------------------------------------------------------
-
-address TemplateInterpreterGenerator::generate_StackOverflowError_handler() {
- address entry = __ pc();
-
-#ifdef ASSERT
- {
- Label L;
- __ lea(rax, Address(rbp,
- frame::interpreter_frame_monitor_block_top_offset *
- wordSize));
- __ cmpptr(rax, rsp); // rax = maximal rsp for current rbp (stack
- // grows negative)
- __ jcc(Assembler::aboveEqual, L); // check if frame is complete
- __ stop ("interpreter frame not set up");
- __ bind(L);
- }
-#endif // ASSERT
- // Restore bcp under the assumption that the current frame is still
- // interpreted
- __ restore_bcp();
-
- // expression stack must be empty before entering the VM if an
- // exception happened
- __ empty_expression_stack();
- // throw exception
- __ call_VM(noreg,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::throw_StackOverflowError));
- return entry;
-}
-
-address TemplateInterpreterGenerator::generate_ArrayIndexOutOfBounds_handler(
- const char* name) {
- address entry = __ pc();
- // expression stack must be empty before entering the VM if an
- // exception happened
- __ empty_expression_stack();
- // setup parameters
- // ??? convention: expect aberrant index in register ebx
- __ lea(c_rarg1, ExternalAddress((address)name));
- __ call_VM(noreg,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::
- throw_ArrayIndexOutOfBoundsException),
- c_rarg1, rbx);
- return entry;
-}
-
-address TemplateInterpreterGenerator::generate_ClassCastException_handler() {
- address entry = __ pc();
-
- // object is at TOS
- __ pop(c_rarg1);
-
- // expression stack must be empty before entering the VM if an
- // exception happened
- __ empty_expression_stack();
-
- __ call_VM(noreg,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::
- throw_ClassCastException),
- c_rarg1);
- return entry;
-}
-
-address TemplateInterpreterGenerator::generate_exception_handler_common(
- const char* name, const char* message, bool pass_oop) {
- assert(!pass_oop || message == NULL, "either oop or message but not both");
- address entry = __ pc();
- if (pass_oop) {
- // object is at TOS
- __ pop(c_rarg2);
- }
- // expression stack must be empty before entering the VM if an
- // exception happened
- __ empty_expression_stack();
- // setup parameters
- __ lea(c_rarg1, ExternalAddress((address)name));
- if (pass_oop) {
- __ call_VM(rax, CAST_FROM_FN_PTR(address,
- InterpreterRuntime::
- create_klass_exception),
- c_rarg1, c_rarg2);
- } else {
- // kind of lame ExternalAddress can't take NULL because
- // external_word_Relocation will assert.
- if (message != NULL) {
- __ lea(c_rarg2, ExternalAddress((address)message));
- } else {
- __ movptr(c_rarg2, NULL_WORD);
- }
- __ call_VM(rax,
- CAST_FROM_FN_PTR(address, InterpreterRuntime::create_exception),
- c_rarg1, c_rarg2);
- }
- // throw exception
- __ jump(ExternalAddress(Interpreter::throw_exception_entry()));
- return entry;
-}
-
-
-address TemplateInterpreterGenerator::generate_continuation_for(TosState state) {
- address entry = __ pc();
- // NULL last_sp until next java call
- __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
- __ dispatch_next(state);
- return entry;
-}
-
-
-address TemplateInterpreterGenerator::generate_return_entry_for(TosState state, int step, size_t index_size) {
- address entry = __ pc();
-
- // Restore stack bottom in case i2c adjusted stack
- __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize));
- // and NULL it as marker that esp is now tos until next java call
- __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
-
- __ restore_bcp();
- __ restore_locals();
-
- if (state == atos) {
- Register mdp = rbx;
- Register tmp = rcx;
- __ profile_return_type(mdp, rax, tmp);
- }
-
- const Register cache = rbx;
- const Register index = rcx;
- __ get_cache_and_index_at_bcp(cache, index, 1, index_size);
-
- const Register flags = cache;
- __ movl(flags, Address(cache, index, Address::times_ptr, ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::flags_offset()));
- __ andl(flags, ConstantPoolCacheEntry::parameter_size_mask);
- __ lea(rsp, Address(rsp, flags, Interpreter::stackElementScale()));
- __ dispatch_next(state, step);
-
- return entry;
-}
-
-
-address TemplateInterpreterGenerator::generate_deopt_entry_for(TosState state, int step) {
- address entry = __ pc();
- // NULL last_sp until next java call
- __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
- __ restore_bcp();
- __ restore_locals();
-#if INCLUDE_JVMCI
- // Check if we need to take lock at entry of synchronized method.
- if (UseJVMCICompiler) {
- Label L;
- __ cmpb(Address(r15_thread, JavaThread::pending_monitorenter_offset()), 0);
- __ jcc(Assembler::zero, L);
- // Clear flag.
- __ movb(Address(r15_thread, JavaThread::pending_monitorenter_offset()), 0);
- // Satisfy calling convention for lock_method().
- __ get_method(rbx);
- // Take lock.
- lock_method();
- __ bind(L);
- }
-#endif
- // handle exceptions
- {
- Label L;
- __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD);
- __ jcc(Assembler::zero, L);
- __ call_VM(noreg,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::throw_pending_exception));
- __ should_not_reach_here();
- __ bind(L);
- }
- __ dispatch_next(state, step);
- return entry;
-}
-
-int AbstractInterpreter::BasicType_as_index(BasicType type) {
- int i = 0;
- switch (type) {
- case T_BOOLEAN: i = 0; break;
- case T_CHAR : i = 1; break;
- case T_BYTE : i = 2; break;
- case T_SHORT : i = 3; break;
- case T_INT : i = 4; break;
- case T_LONG : i = 5; break;
- case T_VOID : i = 6; break;
- case T_FLOAT : i = 7; break;
- case T_DOUBLE : i = 8; break;
- case T_OBJECT : i = 9; break;
- case T_ARRAY : i = 9; break;
- default : ShouldNotReachHere();
- }
- assert(0 <= i && i < AbstractInterpreter::number_of_result_handlers,
- "index out of bounds");
- return i;
-}
-
-
-address TemplateInterpreterGenerator::generate_result_handler_for(
- BasicType type) {
- address entry = __ pc();
- switch (type) {
- case T_BOOLEAN: __ c2bool(rax); break;
- case T_CHAR : __ movzwl(rax, rax); break;
- case T_BYTE : __ sign_extend_byte(rax); break;
- case T_SHORT : __ sign_extend_short(rax); break;
- case T_INT : /* nothing to do */ break;
- case T_LONG : /* nothing to do */ break;
- case T_VOID : /* nothing to do */ break;
- case T_FLOAT : /* nothing to do */ break;
- case T_DOUBLE : /* nothing to do */ break;
- case T_OBJECT :
- // retrieve result from frame
- __ movptr(rax, Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize));
- // and verify it
- __ verify_oop(rax);
- break;
- default : ShouldNotReachHere();
- }
- __ ret(0); // return from result handler
- return entry;
-}
-
-address TemplateInterpreterGenerator::generate_safept_entry_for(
- TosState state,
- address runtime_entry) {
- address entry = __ pc();
- __ push(state);
- __ call_VM(noreg, runtime_entry);
- __ dispatch_via(vtos, Interpreter::_normal_table.table_for(vtos));
- return entry;
-}
-
-
-
-// Helpers for commoning out cases in the various type of method entries.
-//
-
-
-// increment invocation count & check for overflow
-//
-// Note: checking for negative value instead of overflow
-// so we have a 'sticky' overflow test
-//
-// rbx: method
-// ecx: invocation counter
-//
-void InterpreterGenerator::generate_counter_incr(
- Label* overflow,
- Label* profile_method,
- Label* profile_method_continue) {
- Label done;
- // Note: In tiered we increment either counters in Method* or in MDO depending if we're profiling or not.
- if (TieredCompilation) {
- int increment = InvocationCounter::count_increment;
- Label no_mdo;
- if (ProfileInterpreter) {
- // Are we profiling?
- __ movptr(rax, Address(rbx, Method::method_data_offset()));
- __ testptr(rax, rax);
- __ jccb(Assembler::zero, no_mdo);
- // Increment counter in the MDO
- const Address mdo_invocation_counter(rax, in_bytes(MethodData::invocation_counter_offset()) +
- in_bytes(InvocationCounter::counter_offset()));
- const Address mask(rax, in_bytes(MethodData::invoke_mask_offset()));
- __ increment_mask_and_jump(mdo_invocation_counter, increment, mask, rcx, false, Assembler::zero, overflow);
- __ jmp(done);
- }
- __ bind(no_mdo);
- // Increment counter in MethodCounters
- const Address invocation_counter(rax,
- MethodCounters::invocation_counter_offset() +
- InvocationCounter::counter_offset());
- __ get_method_counters(rbx, rax, done);
- const Address mask(rax, in_bytes(MethodCounters::invoke_mask_offset()));
- __ increment_mask_and_jump(invocation_counter, increment, mask, rcx,
- false, Assembler::zero, overflow);
- __ bind(done);
- } else { // not TieredCompilation
- const Address backedge_counter(rax,
- MethodCounters::backedge_counter_offset() +
- InvocationCounter::counter_offset());
- const Address invocation_counter(rax,
- MethodCounters::invocation_counter_offset() +
- InvocationCounter::counter_offset());
-
- __ get_method_counters(rbx, rax, done);
-
- if (ProfileInterpreter) {
- __ incrementl(Address(rax,
- MethodCounters::interpreter_invocation_counter_offset()));
- }
- // Update standard invocation counters
- __ movl(rcx, invocation_counter);
- __ incrementl(rcx, InvocationCounter::count_increment);
- __ movl(invocation_counter, rcx); // save invocation count
-
- __ movl(rax, backedge_counter); // load backedge counter
- __ andl(rax, InvocationCounter::count_mask_value); // mask out the status bits
-
- __ addl(rcx, rax); // add both counters
-
- // profile_method is non-null only for interpreted method so
- // profile_method != NULL == !native_call
-
- if (ProfileInterpreter && profile_method != NULL) {
- // Test to see if we should create a method data oop
- __ movptr(rax, Address(rbx, Method::method_counters_offset()));
- __ cmp32(rcx, Address(rax, in_bytes(MethodCounters::interpreter_profile_limit_offset())));
- __ jcc(Assembler::less, *profile_method_continue);
-
- // if no method data exists, go to profile_method
- __ test_method_data_pointer(rax, *profile_method);
- }
-
- __ movptr(rax, Address(rbx, Method::method_counters_offset()));
- __ cmp32(rcx, Address(rax, in_bytes(MethodCounters::interpreter_invocation_limit_offset())));
- __ jcc(Assembler::aboveEqual, *overflow);
- __ bind(done);
- }
-}
-
-void InterpreterGenerator::generate_counter_overflow(Label* do_continue) {
-
- // Asm interpreter on entry
- // r14 - locals
- // r13 - bcp
- // rbx - method
- // edx - cpool --- DOES NOT APPEAR TO BE TRUE
- // rbp - interpreter frame
-
- // On return (i.e. jump to entry_point) [ back to invocation of interpreter ]
- // Everything as it was on entry
- // rdx is not restored. Doesn't appear to really be set.
-
- // InterpreterRuntime::frequency_counter_overflow takes two
- // arguments, the first (thread) is passed by call_VM, the second
- // indicates if the counter overflow occurs at a backwards branch
- // (NULL bcp). We pass zero for it. The call returns the address
- // of the verified entry point for the method or NULL if the
- // compilation did not complete (either went background or bailed
- // out).
- __ movl(c_rarg1, 0);
- __ call_VM(noreg,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::frequency_counter_overflow),
- c_rarg1);
-
- __ movptr(rbx, Address(rbp, method_offset)); // restore Method*
- // Preserve invariant that r13/r14 contain bcp/locals of sender frame
- // and jump to the interpreted entry.
- __ jmp(*do_continue, relocInfo::none);
-}
-
-// See if we've got enough room on the stack for locals plus overhead.
-// The expression stack grows down incrementally, so the normal guard
-// page mechanism will work for that.
-//
-// NOTE: Since the additional locals are also always pushed (wasn't
-// obvious in generate_fixed_frame) so the guard should work for them
-// too.
-//
-// Args:
-// rdx: number of additional locals this frame needs (what we must check)
-// rbx: Method*
-//
-// Kills:
-// rax
-void InterpreterGenerator::generate_stack_overflow_check(void) {
-
- // monitor entry size: see picture of stack in frame_x86.hpp
- const int entry_size = frame::interpreter_frame_monitor_size() * wordSize;
-
- // total overhead size: entry_size + (saved rbp through expr stack
- // bottom). be sure to change this if you add/subtract anything
- // to/from the overhead area
- const int overhead_size =
- -(frame::interpreter_frame_initial_sp_offset * wordSize) + entry_size;
-
- const int page_size = os::vm_page_size();
-
- Label after_frame_check;
-
- // see if the frame is greater than one page in size. If so,
- // then we need to verify there is enough stack space remaining
- // for the additional locals.
- __ cmpl(rdx, (page_size - overhead_size) / Interpreter::stackElementSize);
- __ jcc(Assembler::belowEqual, after_frame_check);
-
- // compute rsp as if this were going to be the last frame on
- // the stack before the red zone
-
- const Address stack_base(r15_thread, Thread::stack_base_offset());
- const Address stack_size(r15_thread, Thread::stack_size_offset());
-
- // locals + overhead, in bytes
- __ mov(rax, rdx);
- __ shlptr(rax, Interpreter::logStackElementSize); // 2 slots per parameter.
- __ addptr(rax, overhead_size);
-
-#ifdef ASSERT
- Label stack_base_okay, stack_size_okay;
- // verify that thread stack base is non-zero
- __ cmpptr(stack_base, (int32_t)NULL_WORD);
- __ jcc(Assembler::notEqual, stack_base_okay);
- __ stop("stack base is zero");
- __ bind(stack_base_okay);
- // verify that thread stack size is non-zero
- __ cmpptr(stack_size, 0);
- __ jcc(Assembler::notEqual, stack_size_okay);
- __ stop("stack size is zero");
- __ bind(stack_size_okay);
-#endif
-
- // Add stack base to locals and subtract stack size
- __ addptr(rax, stack_base);
- __ subptr(rax, stack_size);
-
- // Use the maximum number of pages we might bang.
- const int max_pages = StackShadowPages > (StackRedPages+StackYellowPages) ? StackShadowPages :
- (StackRedPages+StackYellowPages);
-
- // add in the red and yellow zone sizes
- __ addptr(rax, max_pages * page_size);
-
- // check against the current stack bottom
- __ cmpptr(rsp, rax);
- __ jcc(Assembler::above, after_frame_check);
-
- // Restore sender's sp as SP. This is necessary if the sender's
- // frame is an extended compiled frame (see gen_c2i_adapter())
- // and safer anyway in case of JSR292 adaptations.
-
- __ pop(rax); // return address must be moved if SP is changed
- __ mov(rsp, r13);
- __ push(rax);
-
- // Note: the restored frame is not necessarily interpreted.
- // Use the shared runtime version of the StackOverflowError.
- assert(StubRoutines::throw_StackOverflowError_entry() != NULL, "stub not yet generated");
- __ jump(ExternalAddress(StubRoutines::throw_StackOverflowError_entry()));
-
- // all done with frame size check
- __ bind(after_frame_check);
-}
-
-// Allocate monitor and lock method (asm interpreter)
-//
-// Args:
-// rbx: Method*
-// r14: locals
-//
-// Kills:
-// rax
-// c_rarg0, c_rarg1, c_rarg2, c_rarg3, ...(param regs)
-// rscratch1, rscratch2 (scratch regs)
-void TemplateInterpreterGenerator::lock_method() {
- // synchronize method
- const Address access_flags(rbx, Method::access_flags_offset());
- const Address monitor_block_top(
- rbp,
- frame::interpreter_frame_monitor_block_top_offset * wordSize);
- const int entry_size = frame::interpreter_frame_monitor_size() * wordSize;
-
-#ifdef ASSERT
- {
- Label L;
- __ movl(rax, access_flags);
- __ testl(rax, JVM_ACC_SYNCHRONIZED);
- __ jcc(Assembler::notZero, L);
- __ stop("method doesn't need synchronization");
- __ bind(L);
- }
-#endif // ASSERT
-
- // get synchronization object
- {
- const int mirror_offset = in_bytes(Klass::java_mirror_offset());
- Label done;
- __ movl(rax, access_flags);
- __ testl(rax, JVM_ACC_STATIC);
- // get receiver (assume this is frequent case)
- __ movptr(rax, Address(r14, Interpreter::local_offset_in_bytes(0)));
- __ jcc(Assembler::zero, done);
- __ movptr(rax, Address(rbx, Method::const_offset()));
- __ movptr(rax, Address(rax, ConstMethod::constants_offset()));
- __ movptr(rax, Address(rax,
- ConstantPool::pool_holder_offset_in_bytes()));
- __ movptr(rax, Address(rax, mirror_offset));
-
-#ifdef ASSERT
- {
- Label L;
- __ testptr(rax, rax);
- __ jcc(Assembler::notZero, L);
- __ stop("synchronization object is NULL");
- __ bind(L);
- }
-#endif // ASSERT
-
- __ bind(done);
- }
-
- // add space for monitor & lock
- __ subptr(rsp, entry_size); // add space for a monitor entry
- __ movptr(monitor_block_top, rsp); // set new monitor block top
- // store object
- __ movptr(Address(rsp, BasicObjectLock::obj_offset_in_bytes()), rax);
- __ movptr(c_rarg1, rsp); // object address
- __ lock_object(c_rarg1);
-}
-
-// Generate a fixed interpreter frame. This is identical setup for
-// interpreted methods and for native methods hence the shared code.
-//
-// Args:
-// rax: return address
-// rbx: Method*
-// r14: pointer to locals
-// r13: sender sp
-// rdx: cp cache
-void TemplateInterpreterGenerator::generate_fixed_frame(bool native_call) {
- // initialize fixed part of activation frame
- __ push(rax); // save return address
- __ enter(); // save old & set new rbp
- __ push(r13); // set sender sp
- __ push((int)NULL_WORD); // leave last_sp as null
- __ movptr(r13, Address(rbx, Method::const_offset())); // get ConstMethod*
- __ lea(r13, Address(r13, ConstMethod::codes_offset())); // get codebase
- __ push(rbx); // save Method*
- if (ProfileInterpreter) {
- Label method_data_continue;
- __ movptr(rdx, Address(rbx, in_bytes(Method::method_data_offset())));
- __ testptr(rdx, rdx);
- __ jcc(Assembler::zero, method_data_continue);
- __ addptr(rdx, in_bytes(MethodData::data_offset()));
- __ bind(method_data_continue);
- __ push(rdx); // set the mdp (method data pointer)
- } else {
- __ push(0);
- }
-
- __ movptr(rdx, Address(rbx, Method::const_offset()));
- __ movptr(rdx, Address(rdx, ConstMethod::constants_offset()));
- __ movptr(rdx, Address(rdx, ConstantPool::cache_offset_in_bytes()));
- __ push(rdx); // set constant pool cache
- __ push(r14); // set locals pointer
- if (native_call) {
- __ push(0); // no bcp
- } else {
- __ push(r13); // set bcp
- }
- __ push(0); // reserve word for pointer to expression stack bottom
- __ movptr(Address(rsp, 0), rsp); // set expression stack bottom
-}
-
-// End of helpers
-
-// Method entry for java.lang.ref.Reference.get.
-address InterpreterGenerator::generate_Reference_get_entry(void) {
-#if INCLUDE_ALL_GCS
- // Code: _aload_0, _getfield, _areturn
- // parameter size = 1
- //
- // The code that gets generated by this routine is split into 2 parts:
- // 1. The "intrinsified" code for G1 (or any SATB based GC),
- // 2. The slow path - which is an expansion of the regular method entry.
- //
- // Notes:-
- // * In the G1 code we do not check whether we need to block for
- // a safepoint. If G1 is enabled then we must execute the specialized
- // code for Reference.get (except when the Reference object is null)
- // so that we can log the value in the referent field with an SATB
- // update buffer.
- // If the code for the getfield template is modified so that the
- // G1 pre-barrier code is executed when the current method is
- // Reference.get() then going through the normal method entry
- // will be fine.
- // * The G1 code can, however, check the receiver object (the instance
- // of java.lang.Reference) and jump to the slow path if null. If the
- // Reference object is null then we obviously cannot fetch the referent
- // and so we don't need to call the G1 pre-barrier. Thus we can use the
- // regular method entry code to generate the NPE.
- //
- // rbx: Method*
-
- // r13: senderSP must preserve for slow path, set SP to it on fast path
-
- address entry = __ pc();
-
- const int referent_offset = java_lang_ref_Reference::referent_offset;
- guarantee(referent_offset > 0, "referent offset not initialized");
-
- if (UseG1GC) {
- Label slow_path;
- // rbx: method
-
- // Check if local 0 != NULL
- // If the receiver is null then it is OK to jump to the slow path.
- __ movptr(rax, Address(rsp, wordSize));
-
- __ testptr(rax, rax);
- __ jcc(Assembler::zero, slow_path);
-
- // rax: local 0
- // rbx: method (but can be used as scratch now)
- // rdx: scratch
- // rdi: scratch
-
- // Generate the G1 pre-barrier code to log the value of
- // the referent field in an SATB buffer.
-
- // Load the value of the referent field.
- const Address field_address(rax, referent_offset);
- __ load_heap_oop(rax, field_address);
-
- // Generate the G1 pre-barrier code to log the value of
- // the referent field in an SATB buffer.
- __ g1_write_barrier_pre(noreg /* obj */,
- rax /* pre_val */,
- r15_thread /* thread */,
- rbx /* tmp */,
- true /* tosca_live */,
- true /* expand_call */);
-
- // _areturn
- __ pop(rdi); // get return address
- __ mov(rsp, r13); // set sp to sender sp
- __ jmp(rdi);
- __ ret(0);
-
- // generate a vanilla interpreter entry as the slow path
- __ bind(slow_path);
- __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::zerolocals));
- return entry;
- }
-#endif // INCLUDE_ALL_GCS
-
- // If G1 is not enabled then attempt to go through the accessor entry point
- // Reference.get is an accessor
- return NULL;
-}
-
-/**
- * Method entry for static native methods:
- * int java.util.zip.CRC32.update(int crc, int b)
- */
-address InterpreterGenerator::generate_CRC32_update_entry() {
- if (UseCRC32Intrinsics) {
- address entry = __ pc();
-
- // rbx,: Method*
- // r13: senderSP must preserved for slow path, set SP to it on fast path
- // c_rarg0: scratch (rdi on non-Win64, rcx on Win64)
- // c_rarg1: scratch (rsi on non-Win64, rdx on Win64)
-
- Label slow_path;
- // If we need a safepoint check, generate full interpreter entry.
- ExternalAddress state(SafepointSynchronize::address_of_state());
- __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()),
- SafepointSynchronize::_not_synchronized);
- __ jcc(Assembler::notEqual, slow_path);
-
- // We don't generate local frame and don't align stack because
- // we call stub code and there is no safepoint on this path.
-
- // Load parameters
- const Register crc = rax; // crc
- const Register val = c_rarg0; // source java byte value
- const Register tbl = c_rarg1; // scratch
-
- // Arguments are reversed on java expression stack
- __ movl(val, Address(rsp, wordSize)); // byte value
- __ movl(crc, Address(rsp, 2*wordSize)); // Initial CRC
-
- __ lea(tbl, ExternalAddress(StubRoutines::crc_table_addr()));
- __ notl(crc); // ~crc
- __ update_byte_crc32(crc, val, tbl);
- __ notl(crc); // ~crc
- // result in rax
-
- // _areturn
- __ pop(rdi); // get return address
- __ mov(rsp, r13); // set sp to sender sp
- __ jmp(rdi);
-
- // generate a vanilla native entry as the slow path
- __ bind(slow_path);
- __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::native));
- return entry;
- }
- return NULL;
-}
-
-/**
- * Method entry for static native methods:
- * int java.util.zip.CRC32.updateBytes(int crc, byte[] b, int off, int len)
- * int java.util.zip.CRC32.updateByteBuffer(int crc, long buf, int off, int len)
- */
-address InterpreterGenerator::generate_CRC32_updateBytes_entry(AbstractInterpreter::MethodKind kind) {
- if (UseCRC32Intrinsics) {
- address entry = __ pc();
-
- // rbx,: Method*
- // r13: senderSP must preserved for slow path, set SP to it on fast path
-
- Label slow_path;
- // If we need a safepoint check, generate full interpreter entry.
- ExternalAddress state(SafepointSynchronize::address_of_state());
- __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()),
- SafepointSynchronize::_not_synchronized);
- __ jcc(Assembler::notEqual, slow_path);
-
- // We don't generate local frame and don't align stack because
- // we call stub code and there is no safepoint on this path.
-
- // Load parameters
- const Register crc = c_rarg0; // crc
- const Register buf = c_rarg1; // source java byte array address
- const Register len = c_rarg2; // length
- const Register off = len; // offset (never overlaps with 'len')
-
- // Arguments are reversed on java expression stack
- // Calculate address of start element
- if (kind == Interpreter::java_util_zip_CRC32_updateByteBuffer) {
- __ movptr(buf, Address(rsp, 3*wordSize)); // long buf
- __ movl2ptr(off, Address(rsp, 2*wordSize)); // offset
- __ addq(buf, off); // + offset
- __ movl(crc, Address(rsp, 5*wordSize)); // Initial CRC
- } else {
- __ movptr(buf, Address(rsp, 3*wordSize)); // byte[] array
- __ addptr(buf, arrayOopDesc::base_offset_in_bytes(T_BYTE)); // + header size
- __ movl2ptr(off, Address(rsp, 2*wordSize)); // offset
- __ addq(buf, off); // + offset
- __ movl(crc, Address(rsp, 4*wordSize)); // Initial CRC
- }
- // Can now load 'len' since we're finished with 'off'
- __ movl(len, Address(rsp, wordSize)); // Length
-
- __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, StubRoutines::updateBytesCRC32()), crc, buf, len);
- // result in rax
-
- // _areturn
- __ pop(rdi); // get return address
- __ mov(rsp, r13); // set sp to sender sp
- __ jmp(rdi);
-
- // generate a vanilla native entry as the slow path
- __ bind(slow_path);
- __ jump_to_entry(Interpreter::entry_for_kind(Interpreter::native));
- return entry;
- }
- return NULL;
-}
-
-/**
-* Method entry for static native methods:
-* int java.util.zip.CRC32C.updateBytes(int crc, byte[] b, int off, int end)
-* int java.util.zip.CRC32C.updateByteBuffer(int crc, long address, int off, int end)
-*/
-address InterpreterGenerator::generate_CRC32C_updateBytes_entry(AbstractInterpreter::MethodKind kind) {
- if (UseCRC32CIntrinsics) {
- address entry = __ pc();
- // Load parameters
- const Register crc = c_rarg0; // crc
- const Register buf = c_rarg1; // source java byte array address
- const Register len = c_rarg2;
- const Register off = c_rarg3; // offset
- const Register end = len;
-
- // Arguments are reversed on java expression stack
- // Calculate address of start element
- if (kind == Interpreter::java_util_zip_CRC32C_updateDirectByteBuffer) {
- __ movptr(buf, Address(rsp, 3 * wordSize)); // long buf
- __ movl2ptr(off, Address(rsp, 2 * wordSize)); // offset
- __ addq(buf, off); // + offset
- __ movl(crc, Address(rsp, 5 * wordSize)); // Initial CRC
- // Note on 5 * wordSize vs. 4 * wordSize:
- // * int java.util.zip.CRC32C.updateByteBuffer(int crc, long address, int off, int end)
- // 4 2,3 1 0
- // end starts at SP + 8
- // The Java(R) Virtual Machine Specification Java SE 7 Edition
- // 4.10.2.3. Values of Types long and double
- // "When calculating operand stack length, values of type long and double have length two."
- } else {
- __ movptr(buf, Address(rsp, 3 * wordSize)); // byte[] array
- __ addptr(buf, arrayOopDesc::base_offset_in_bytes(T_BYTE)); // + header size
- __ movl2ptr(off, Address(rsp, 2 * wordSize)); // offset
- __ addq(buf, off); // + offset
- __ movl(crc, Address(rsp, 4 * wordSize)); // Initial CRC
- }
- __ movl(end, Address(rsp, wordSize)); // end
- __ subl(end, off); // end - off
- __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, StubRoutines::updateBytesCRC32C()), crc, buf, len);
- // result in rax
- // _areturn
- __ pop(rdi); // get return address
- __ mov(rsp, r13); // set sp to sender sp
- __ jmp(rdi);
-
- return entry;
- }
-
- return NULL;
-}
-
-// Interpreter stub for calling a native method. (asm interpreter)
-// This sets up a somewhat different looking stack for calling the
-// native method than the typical interpreter frame setup.
-address InterpreterGenerator::generate_native_entry(bool synchronized) {
- // determine code generation flags
- bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods;
-
- // rbx: Method*
- // r13: sender sp
-
- address entry_point = __ pc();
-
- const Address constMethod (rbx, Method::const_offset());
- const Address access_flags (rbx, Method::access_flags_offset());
- const Address size_of_parameters(rcx, ConstMethod::
- size_of_parameters_offset());
-
-
- // get parameter size (always needed)
- __ movptr(rcx, constMethod);
- __ load_unsigned_short(rcx, size_of_parameters);
-
- // native calls don't need the stack size check since they have no
- // expression stack and the arguments are already on the stack and
- // we only add a handful of words to the stack
-
- // rbx: Method*
- // rcx: size of parameters
- // r13: sender sp
- __ pop(rax); // get return address
-
- // for natives the size of locals is zero
-
- // compute beginning of parameters (r14)
- __ lea(r14, Address(rsp, rcx, Address::times_8, -wordSize));
-
- // add 2 zero-initialized slots for native calls
- // initialize result_handler slot
- __ push((int) NULL_WORD);
- // slot for oop temp
- // (static native method holder mirror/jni oop result)
- __ push((int) NULL_WORD);
-
- // initialize fixed part of activation frame
- generate_fixed_frame(true);
-
- // make sure method is native & not abstract
-#ifdef ASSERT
- __ movl(rax, access_flags);
- {
- Label L;
- __ testl(rax, JVM_ACC_NATIVE);
- __ jcc(Assembler::notZero, L);
- __ stop("tried to execute non-native method as native");
- __ bind(L);
- }
- {
- Label L;
- __ testl(rax, JVM_ACC_ABSTRACT);
- __ jcc(Assembler::zero, L);
- __ stop("tried to execute abstract method in interpreter");
- __ bind(L);
- }
-#endif
-
- // Since at this point in the method invocation the exception handler
- // would try to exit the monitor of synchronized methods which hasn't
- // been entered yet, we set the thread local variable
- // _do_not_unlock_if_synchronized to true. The remove_activation will
- // check this flag.
-
- const Address do_not_unlock_if_synchronized(r15_thread,
- in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()));
- __ movbool(do_not_unlock_if_synchronized, true);
-
- // increment invocation count & check for overflow
- Label invocation_counter_overflow;
- if (inc_counter) {
- generate_counter_incr(&invocation_counter_overflow, NULL, NULL);
- }
-
- Label continue_after_compile;
- __ bind(continue_after_compile);
-
- bang_stack_shadow_pages(true);
-
- // reset the _do_not_unlock_if_synchronized flag
- __ movbool(do_not_unlock_if_synchronized, false);
-
- // check for synchronized methods
- // Must happen AFTER invocation_counter check and stack overflow check,
- // so method is not locked if overflows.
- if (synchronized) {
- lock_method();
- } else {
- // no synchronization necessary
-#ifdef ASSERT
- {
- Label L;
- __ movl(rax, access_flags);
- __ testl(rax, JVM_ACC_SYNCHRONIZED);
- __ jcc(Assembler::zero, L);
- __ stop("method needs synchronization");
- __ bind(L);
- }
-#endif
- }
-
- // start execution
-#ifdef ASSERT
- {
- Label L;
- const Address monitor_block_top(rbp,
- frame::interpreter_frame_monitor_block_top_offset * wordSize);
- __ movptr(rax, monitor_block_top);
- __ cmpptr(rax, rsp);
- __ jcc(Assembler::equal, L);
- __ stop("broken stack frame setup in interpreter");
- __ bind(L);
- }
-#endif
-
- // jvmti support
- __ notify_method_entry();
-
- // work registers
- const Register method = rbx;
- const Register t = r11;
-
- // allocate space for parameters
- __ get_method(method);
- __ movptr(t, Address(method, Method::const_offset()));
- __ load_unsigned_short(t, Address(t, ConstMethod::size_of_parameters_offset()));
- __ shll(t, Interpreter::logStackElementSize);
-
- __ subptr(rsp, t);
- __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows
- __ andptr(rsp, -16); // must be 16 byte boundary (see amd64 ABI)
-
- // get signature handler
- {
- Label L;
- __ movptr(t, Address(method, Method::signature_handler_offset()));
- __ testptr(t, t);
- __ jcc(Assembler::notZero, L);
- __ call_VM(noreg,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::prepare_native_call),
- method);
- __ get_method(method);
- __ movptr(t, Address(method, Method::signature_handler_offset()));
- __ bind(L);
- }
-
- // call signature handler
- assert(InterpreterRuntime::SignatureHandlerGenerator::from() == r14,
- "adjust this code");
- assert(InterpreterRuntime::SignatureHandlerGenerator::to() == rsp,
- "adjust this code");
- assert(InterpreterRuntime::SignatureHandlerGenerator::temp() == rscratch1,
- "adjust this code");
-
- // The generated handlers do not touch RBX (the method oop).
- // However, large signatures cannot be cached and are generated
- // each time here. The slow-path generator can do a GC on return,
- // so we must reload it after the call.
- __ call(t);
- __ get_method(method); // slow path can do a GC, reload RBX
-
-
- // result handler is in rax
- // set result handler
- __ movptr(Address(rbp,
- (frame::interpreter_frame_result_handler_offset) * wordSize),
- rax);
-
- // pass mirror handle if static call
- {
- Label L;
- const int mirror_offset = in_bytes(Klass::java_mirror_offset());
- __ movl(t, Address(method, Method::access_flags_offset()));
- __ testl(t, JVM_ACC_STATIC);
- __ jcc(Assembler::zero, L);
- // get mirror
- __ movptr(t, Address(method, Method::const_offset()));
- __ movptr(t, Address(t, ConstMethod::constants_offset()));
- __ movptr(t, Address(t, ConstantPool::pool_holder_offset_in_bytes()));
- __ movptr(t, Address(t, mirror_offset));
- // copy mirror into activation frame
- __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize),
- t);
- // pass handle to mirror
- __ lea(c_rarg1,
- Address(rbp, frame::interpreter_frame_oop_temp_offset * wordSize));
- __ bind(L);
- }
-
- // get native function entry point
- {
- Label L;
- __ movptr(rax, Address(method, Method::native_function_offset()));
- ExternalAddress unsatisfied(SharedRuntime::native_method_throw_unsatisfied_link_error_entry());
- __ movptr(rscratch2, unsatisfied.addr());
- __ cmpptr(rax, rscratch2);
- __ jcc(Assembler::notEqual, L);
- __ call_VM(noreg,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::prepare_native_call),
- method);
- __ get_method(method);
- __ movptr(rax, Address(method, Method::native_function_offset()));
- __ bind(L);
- }
-
- // pass JNIEnv
- __ lea(c_rarg0, Address(r15_thread, JavaThread::jni_environment_offset()));
-
- // It is enough that the pc() points into the right code
- // segment. It does not have to be the correct return pc.
- __ set_last_Java_frame(rsp, rbp, (address) __ pc());
-
- // change thread state
-#ifdef ASSERT
- {
- Label L;
- __ movl(t, Address(r15_thread, JavaThread::thread_state_offset()));
- __ cmpl(t, _thread_in_Java);
- __ jcc(Assembler::equal, L);
- __ stop("Wrong thread state in native stub");
- __ bind(L);
- }
-#endif
-
- // Change state to native
-
- __ movl(Address(r15_thread, JavaThread::thread_state_offset()),
- _thread_in_native);
-
- // Call the native method.
- __ call(rax);
- // result potentially in rax or xmm0
-
- // Verify or restore cpu control state after JNI call
- __ restore_cpu_control_state_after_jni();
-
- // NOTE: The order of these pushes is known to frame::interpreter_frame_result
- // in order to extract the result of a method call. If the order of these
- // pushes change or anything else is added to the stack then the code in
- // interpreter_frame_result must also change.
-
- __ push(dtos);
- __ push(ltos);
-
- // change thread state
- __ movl(Address(r15_thread, JavaThread::thread_state_offset()),
- _thread_in_native_trans);
-
- if (os::is_MP()) {
- if (UseMembar) {
- // Force this write out before the read below
- __ membar(Assembler::Membar_mask_bits(
- Assembler::LoadLoad | Assembler::LoadStore |
- Assembler::StoreLoad | Assembler::StoreStore));
- } else {
- // Write serialization page so VM thread can do a pseudo remote membar.
- // We use the current thread pointer to calculate a thread specific
- // offset to write to within the page. This minimizes bus traffic
- // due to cache line collision.
- __ serialize_memory(r15_thread, rscratch2);
- }
- }
-
- // check for safepoint operation in progress and/or pending suspend requests
- {
- Label Continue;
- __ cmp32(ExternalAddress(SafepointSynchronize::address_of_state()),
- SafepointSynchronize::_not_synchronized);
-
- Label L;
- __ jcc(Assembler::notEqual, L);
- __ cmpl(Address(r15_thread, JavaThread::suspend_flags_offset()), 0);
- __ jcc(Assembler::equal, Continue);
- __ bind(L);
-
- // Don't use call_VM as it will see a possible pending exception
- // and forward it and never return here preventing us from
- // clearing _last_native_pc down below. Also can't use
- // call_VM_leaf either as it will check to see if r13 & r14 are
- // preserved and correspond to the bcp/locals pointers. So we do a
- // runtime call by hand.
- //
- __ mov(c_rarg0, r15_thread);
- __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM)
- __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows
- __ andptr(rsp, -16); // align stack as required by ABI
- __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans)));
- __ mov(rsp, r12); // restore sp
- __ reinit_heapbase();
- __ bind(Continue);
- }
-
- // change thread state
- __ movl(Address(r15_thread, JavaThread::thread_state_offset()), _thread_in_Java);
-
- // reset_last_Java_frame
- __ reset_last_Java_frame(true, true);
-
- // reset handle block
- __ movptr(t, Address(r15_thread, JavaThread::active_handles_offset()));
- __ movl(Address(t, JNIHandleBlock::top_offset_in_bytes()), (int32_t)NULL_WORD);
-
- // If result is an oop unbox and store it in frame where gc will see it
- // and result handler will pick it up
-
- {
- Label no_oop, store_result;
- __ lea(t, ExternalAddress(AbstractInterpreter::result_handler(T_OBJECT)));
- __ cmpptr(t, Address(rbp, frame::interpreter_frame_result_handler_offset*wordSize));
- __ jcc(Assembler::notEqual, no_oop);
- // retrieve result
- __ pop(ltos);
- __ testptr(rax, rax);
- __ jcc(Assembler::zero, store_result);
- __ movptr(rax, Address(rax, 0));
- __ bind(store_result);
- __ movptr(Address(rbp, frame::interpreter_frame_oop_temp_offset*wordSize), rax);
- // keep stack depth as expected by pushing oop which will eventually be discarde
- __ push(ltos);
- __ bind(no_oop);
- }
-
-
- {
- Label no_reguard;
- __ cmpl(Address(r15_thread, JavaThread::stack_guard_state_offset()),
- JavaThread::stack_guard_yellow_disabled);
- __ jcc(Assembler::notEqual, no_reguard);
-
- __ pusha(); // XXX only save smashed registers
- __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM)
- __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows
- __ andptr(rsp, -16); // align stack as required by ABI
- __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages)));
- __ mov(rsp, r12); // restore sp
- __ popa(); // XXX only restore smashed registers
- __ reinit_heapbase();
-
- __ bind(no_reguard);
- }
-
-
- // The method register is junk from after the thread_in_native transition
- // until here. Also can't call_VM until the bcp has been
- // restored. Need bcp for throwing exception below so get it now.
- __ get_method(method);
-
- // restore r13 to have legal interpreter frame, i.e., bci == 0 <=>
- // r13 == code_base()
- __ movptr(r13, Address(method, Method::const_offset())); // get ConstMethod*
- __ lea(r13, Address(r13, ConstMethod::codes_offset())); // get codebase
- // handle exceptions (exception handling will handle unlocking!)
- {
- Label L;
- __ cmpptr(Address(r15_thread, Thread::pending_exception_offset()), (int32_t) NULL_WORD);
- __ jcc(Assembler::zero, L);
- // Note: At some point we may want to unify this with the code
- // used in call_VM_base(); i.e., we should use the
- // StubRoutines::forward_exception code. For now this doesn't work
- // here because the rsp is not correctly set at this point.
- __ MacroAssembler::call_VM(noreg,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::throw_pending_exception));
- __ should_not_reach_here();
- __ bind(L);
- }
-
- // do unlocking if necessary
- {
- Label L;
- __ movl(t, Address(method, Method::access_flags_offset()));
- __ testl(t, JVM_ACC_SYNCHRONIZED);
- __ jcc(Assembler::zero, L);
- // the code below should be shared with interpreter macro
- // assembler implementation
- {
- Label unlock;
- // BasicObjectLock will be first in list, since this is a
- // synchronized method. However, need to check that the object
- // has not been unlocked by an explicit monitorexit bytecode.
- const Address monitor(rbp,
- (intptr_t)(frame::interpreter_frame_initial_sp_offset *
- wordSize - sizeof(BasicObjectLock)));
-
- // monitor expect in c_rarg1 for slow unlock path
- __ lea(c_rarg1, monitor); // address of first monitor
-
- __ movptr(t, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes()));
- __ testptr(t, t);
- __ jcc(Assembler::notZero, unlock);
-
- // Entry already unlocked, need to throw exception
- __ MacroAssembler::call_VM(noreg,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::throw_illegal_monitor_state_exception));
- __ should_not_reach_here();
-
- __ bind(unlock);
- __ unlock_object(c_rarg1);
- }
- __ bind(L);
- }
-
- // jvmti support
- // Note: This must happen _after_ handling/throwing any exceptions since
- // the exception handler code notifies the runtime of method exits
- // too. If this happens before, method entry/exit notifications are
- // not properly paired (was bug - gri 11/22/99).
- __ notify_method_exit(vtos, InterpreterMacroAssembler::NotifyJVMTI);
-
- // restore potential result in edx:eax, call result handler to
- // restore potential result in ST0 & handle result
-
- __ pop(ltos);
- __ pop(dtos);
-
- __ movptr(t, Address(rbp,
- (frame::interpreter_frame_result_handler_offset) * wordSize));
- __ call(t);
-
- // remove activation
- __ movptr(t, Address(rbp,
- frame::interpreter_frame_sender_sp_offset *
- wordSize)); // get sender sp
- __ leave(); // remove frame anchor
- __ pop(rdi); // get return address
- __ mov(rsp, t); // set sp to sender sp
- __ jmp(rdi);
-
- if (inc_counter) {
- // Handle overflow of counter and compile method
- __ bind(invocation_counter_overflow);
- generate_counter_overflow(&continue_after_compile);
- }
-
- return entry_point;
-}
-
-//
-// Generic interpreted method entry to (asm) interpreter
-//
-address InterpreterGenerator::generate_normal_entry(bool synchronized) {
- // determine code generation flags
- bool inc_counter = UseCompiler || CountCompiledCalls || LogTouchedMethods;
-
- // ebx: Method*
- // r13: sender sp
- address entry_point = __ pc();
-
- const Address constMethod(rbx, Method::const_offset());
- const Address access_flags(rbx, Method::access_flags_offset());
- const Address size_of_parameters(rdx,
- ConstMethod::size_of_parameters_offset());
- const Address size_of_locals(rdx, ConstMethod::size_of_locals_offset());
-
-
- // get parameter size (always needed)
- __ movptr(rdx, constMethod);
- __ load_unsigned_short(rcx, size_of_parameters);
-
- // rbx: Method*
- // rcx: size of parameters
- // r13: sender_sp (could differ from sp+wordSize if we were called via c2i )
-
- __ load_unsigned_short(rdx, size_of_locals); // get size of locals in words
- __ subl(rdx, rcx); // rdx = no. of additional locals
-
- // YYY
-// __ incrementl(rdx);
-// __ andl(rdx, -2);
-
- // see if we've got enough room on the stack for locals plus overhead.
- generate_stack_overflow_check();
-
- // get return address
- __ pop(rax);
-
- // compute beginning of parameters (r14)
- __ lea(r14, Address(rsp, rcx, Address::times_8, -wordSize));
-
- // rdx - # of additional locals
- // allocate space for locals
- // explicitly initialize locals
- {
- Label exit, loop;
- __ testl(rdx, rdx);
- __ jcc(Assembler::lessEqual, exit); // do nothing if rdx <= 0
- __ bind(loop);
- __ push((int) NULL_WORD); // initialize local variables
- __ decrementl(rdx); // until everything initialized
- __ jcc(Assembler::greater, loop);
- __ bind(exit);
- }
-
- // initialize fixed part of activation frame
- generate_fixed_frame(false);
-
- // make sure method is not native & not abstract
-#ifdef ASSERT
- __ movl(rax, access_flags);
- {
- Label L;
- __ testl(rax, JVM_ACC_NATIVE);
- __ jcc(Assembler::zero, L);
- __ stop("tried to execute native method as non-native");
- __ bind(L);
- }
- {
- Label L;
- __ testl(rax, JVM_ACC_ABSTRACT);
- __ jcc(Assembler::zero, L);
- __ stop("tried to execute abstract method in interpreter");
- __ bind(L);
- }
-#endif
-
- // Since at this point in the method invocation the exception
- // handler would try to exit the monitor of synchronized methods
- // which hasn't been entered yet, we set the thread local variable
- // _do_not_unlock_if_synchronized to true. The remove_activation
- // will check this flag.
-
- const Address do_not_unlock_if_synchronized(r15_thread,
- in_bytes(JavaThread::do_not_unlock_if_synchronized_offset()));
- __ movbool(do_not_unlock_if_synchronized, true);
-
- __ profile_parameters_type(rax, rcx, rdx);
- // increment invocation count & check for overflow
- Label invocation_counter_overflow;
- Label profile_method;
- Label profile_method_continue;
- if (inc_counter) {
- generate_counter_incr(&invocation_counter_overflow,
- &profile_method,
- &profile_method_continue);
- if (ProfileInterpreter) {
- __ bind(profile_method_continue);
- }
- }
-
- Label continue_after_compile;
- __ bind(continue_after_compile);
-
- // check for synchronized interpreted methods
- bang_stack_shadow_pages(false);
-
- // reset the _do_not_unlock_if_synchronized flag
- __ movbool(do_not_unlock_if_synchronized, false);
-
- // check for synchronized methods
- // Must happen AFTER invocation_counter check and stack overflow check,
- // so method is not locked if overflows.
- if (synchronized) {
- // Allocate monitor and lock method
- lock_method();
- } else {
- // no synchronization necessary
-#ifdef ASSERT
- {
- Label L;
- __ movl(rax, access_flags);
- __ testl(rax, JVM_ACC_SYNCHRONIZED);
- __ jcc(Assembler::zero, L);
- __ stop("method needs synchronization");
- __ bind(L);
- }
-#endif
- }
-
- // start execution
-#ifdef ASSERT
- {
- Label L;
- const Address monitor_block_top (rbp,
- frame::interpreter_frame_monitor_block_top_offset * wordSize);
- __ movptr(rax, monitor_block_top);
- __ cmpptr(rax, rsp);
- __ jcc(Assembler::equal, L);
- __ stop("broken stack frame setup in interpreter");
- __ bind(L);
- }
-#endif
-
- // jvmti support
- __ notify_method_entry();
-
- __ dispatch_next(vtos);
-
- // invocation counter overflow
- if (inc_counter) {
- if (ProfileInterpreter) {
- // We have decided to profile this method in the interpreter
- __ bind(profile_method);
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method));
- __ set_method_data_pointer_for_bcp();
- __ get_method(rbx);
- __ jmp(profile_method_continue);
- }
- // Handle overflow of counter and compile method
- __ bind(invocation_counter_overflow);
- generate_counter_overflow(&continue_after_compile);
- }
-
- return entry_point;
-}
-
-
-// These should never be compiled since the interpreter will prefer
-// the compiled version to the intrinsic version.
-bool AbstractInterpreter::can_be_compiled(methodHandle m) {
- switch (method_kind(m)) {
- case Interpreter::java_lang_math_sin : // fall thru
- case Interpreter::java_lang_math_cos : // fall thru
- case Interpreter::java_lang_math_tan : // fall thru
- case Interpreter::java_lang_math_abs : // fall thru
- case Interpreter::java_lang_math_log : // fall thru
- case Interpreter::java_lang_math_log10 : // fall thru
- case Interpreter::java_lang_math_sqrt : // fall thru
- case Interpreter::java_lang_math_pow : // fall thru
- case Interpreter::java_lang_math_exp :
- return false;
- default:
- return true;
- }
-}
-
-// How much stack a method activation needs in words.
-int AbstractInterpreter::size_top_interpreter_activation(Method* method) {
- const int entry_size = frame::interpreter_frame_monitor_size();
-
- // total overhead size: entry_size + (saved rbp thru expr stack
- // bottom). be sure to change this if you add/subtract anything
- // to/from the overhead area
- const int overhead_size =
- -(frame::interpreter_frame_initial_sp_offset) + entry_size;
-
- const int stub_code = frame::entry_frame_after_call_words;
- const int method_stack = (method->max_locals() + method->max_stack()) *
- Interpreter::stackElementWords;
- return (overhead_size + method_stack + stub_code);
-}
-
-//-----------------------------------------------------------------------------
-// Exceptions
-
-void TemplateInterpreterGenerator::generate_throw_exception() {
- // Entry point in previous activation (i.e., if the caller was
- // interpreted)
- Interpreter::_rethrow_exception_entry = __ pc();
- // Restore sp to interpreter_frame_last_sp even though we are going
- // to empty the expression stack for the exception processing.
- __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
- // rax: exception
- // rdx: return address/pc that threw exception
- __ restore_bcp(); // r13 points to call/send
- __ restore_locals();
- __ reinit_heapbase(); // restore r12 as heapbase.
- // Entry point for exceptions thrown within interpreter code
- Interpreter::_throw_exception_entry = __ pc();
- // expression stack is undefined here
- // rax: exception
- // r13: exception bcp
- __ verify_oop(rax);
- __ mov(c_rarg1, rax);
-
- // expression stack must be empty before entering the VM in case of
- // an exception
- __ empty_expression_stack();
- // find exception handler address and preserve exception oop
- __ call_VM(rdx,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::exception_handler_for_exception),
- c_rarg1);
- // rax: exception handler entry point
- // rdx: preserved exception oop
- // r13: bcp for exception handler
- __ push_ptr(rdx); // push exception which is now the only value on the stack
- __ jmp(rax); // jump to exception handler (may be _remove_activation_entry!)
-
- // If the exception is not handled in the current frame the frame is
- // removed and the exception is rethrown (i.e. exception
- // continuation is _rethrow_exception).
- //
- // Note: At this point the bci is still the bxi for the instruction
- // which caused the exception and the expression stack is
- // empty. Thus, for any VM calls at this point, GC will find a legal
- // oop map (with empty expression stack).
-
- // In current activation
- // tos: exception
- // esi: exception bcp
-
- //
- // JVMTI PopFrame support
- //
-
- Interpreter::_remove_activation_preserving_args_entry = __ pc();
- __ empty_expression_stack();
- // Set the popframe_processing bit in pending_popframe_condition
- // indicating that we are currently handling popframe, so that
- // call_VMs that may happen later do not trigger new popframe
- // handling cycles.
- __ movl(rdx, Address(r15_thread, JavaThread::popframe_condition_offset()));
- __ orl(rdx, JavaThread::popframe_processing_bit);
- __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()), rdx);
-
- {
- // Check to see whether we are returning to a deoptimized frame.
- // (The PopFrame call ensures that the caller of the popped frame is
- // either interpreted or compiled and deoptimizes it if compiled.)
- // In this case, we can't call dispatch_next() after the frame is
- // popped, but instead must save the incoming arguments and restore
- // them after deoptimization has occurred.
- //
- // Note that we don't compare the return PC against the
- // deoptimization blob's unpack entry because of the presence of
- // adapter frames in C2.
- Label caller_not_deoptimized;
- __ movptr(c_rarg1, Address(rbp, frame::return_addr_offset * wordSize));
- __ super_call_VM_leaf(CAST_FROM_FN_PTR(address,
- InterpreterRuntime::interpreter_contains), c_rarg1);
- __ testl(rax, rax);
- __ jcc(Assembler::notZero, caller_not_deoptimized);
-
- // Compute size of arguments for saving when returning to
- // deoptimized caller
- __ get_method(rax);
- __ movptr(rax, Address(rax, Method::const_offset()));
- __ load_unsigned_short(rax, Address(rax, in_bytes(ConstMethod::
- size_of_parameters_offset())));
- __ shll(rax, Interpreter::logStackElementSize);
- __ restore_locals(); // XXX do we need this?
- __ subptr(r14, rax);
- __ addptr(r14, wordSize);
- // Save these arguments
- __ super_call_VM_leaf(CAST_FROM_FN_PTR(address,
- Deoptimization::
- popframe_preserve_args),
- r15_thread, rax, r14);
-
- __ remove_activation(vtos, rdx,
- /* throw_monitor_exception */ false,
- /* install_monitor_exception */ false,
- /* notify_jvmdi */ false);
-
- // Inform deoptimization that it is responsible for restoring
- // these arguments
- __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()),
- JavaThread::popframe_force_deopt_reexecution_bit);
-
- // Continue in deoptimization handler
- __ jmp(rdx);
-
- __ bind(caller_not_deoptimized);
- }
-
- __ remove_activation(vtos, rdx, /* rdx result (retaddr) is not used */
- /* throw_monitor_exception */ false,
- /* install_monitor_exception */ false,
- /* notify_jvmdi */ false);
-
- // Finish with popframe handling
- // A previous I2C followed by a deoptimization might have moved the
- // outgoing arguments further up the stack. PopFrame expects the
- // mutations to those outgoing arguments to be preserved and other
- // constraints basically require this frame to look exactly as
- // though it had previously invoked an interpreted activation with
- // no space between the top of the expression stack (current
- // last_sp) and the top of stack. Rather than force deopt to
- // maintain this kind of invariant all the time we call a small
- // fixup routine to move the mutated arguments onto the top of our
- // expression stack if necessary.
- __ mov(c_rarg1, rsp);
- __ movptr(c_rarg2, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize));
- // PC must point into interpreter here
- __ set_last_Java_frame(noreg, rbp, __ pc());
- __ super_call_VM_leaf(CAST_FROM_FN_PTR(address, InterpreterRuntime::popframe_move_outgoing_args), r15_thread, c_rarg1, c_rarg2);
- __ reset_last_Java_frame(true, true);
- // Restore the last_sp and null it out
- __ movptr(rsp, Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize));
- __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), (int32_t)NULL_WORD);
-
- __ restore_bcp(); // XXX do we need this?
- __ restore_locals(); // XXX do we need this?
- // The method data pointer was incremented already during
- // call profiling. We have to restore the mdp for the current bcp.
- if (ProfileInterpreter) {
- __ set_method_data_pointer_for_bcp();
- }
-
- // Clear the popframe condition flag
- __ movl(Address(r15_thread, JavaThread::popframe_condition_offset()),
- JavaThread::popframe_inactive);
-
-#if INCLUDE_JVMTI
- {
- Label L_done;
- const Register local0 = r14;
-
- __ cmpb(Address(r13, 0), Bytecodes::_invokestatic);
- __ jcc(Assembler::notEqual, L_done);
-
- // The member name argument must be restored if _invokestatic is re-executed after a PopFrame call.
- // Detect such a case in the InterpreterRuntime function and return the member name argument, or NULL.
-
- __ get_method(rdx);
- __ movptr(rax, Address(local0, 0));
- __ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::member_name_arg_or_null), rax, rdx, r13);
-
- __ testptr(rax, rax);
- __ jcc(Assembler::zero, L_done);
-
- __ movptr(Address(rbx, 0), rax);
- __ bind(L_done);
- }
-#endif // INCLUDE_JVMTI
-
- __ dispatch_next(vtos);
- // end of PopFrame support
-
- Interpreter::_remove_activation_entry = __ pc();
-
- // preserve exception over this code sequence
- __ pop_ptr(rax);
- __ movptr(Address(r15_thread, JavaThread::vm_result_offset()), rax);
- // remove the activation (without doing throws on illegalMonitorExceptions)
- __ remove_activation(vtos, rdx, false, true, false);
- // restore exception
- __ get_vm_result(rax, r15_thread);
-
- // In between activations - previous activation type unknown yet
- // compute continuation point - the continuation point expects the
- // following registers set up:
- //
- // rax: exception
- // rdx: return address/pc that threw exception
- // rsp: expression stack of caller
- // rbp: ebp of caller
- __ push(rax); // save exception
- __ push(rdx); // save return address
- __ super_call_VM_leaf(CAST_FROM_FN_PTR(address,
- SharedRuntime::exception_handler_for_return_address),
- r15_thread, rdx);
- __ mov(rbx, rax); // save exception handler
- __ pop(rdx); // restore return address
- __ pop(rax); // restore exception
- // Note that an "issuing PC" is actually the next PC after the call
- __ jmp(rbx); // jump to exception
- // handler of caller
-}
-
-
-//
-// JVMTI ForceEarlyReturn support
-//
-address TemplateInterpreterGenerator::generate_earlyret_entry_for(TosState state) {
- address entry = __ pc();
-
- __ restore_bcp();
- __ restore_locals();
- __ empty_expression_stack();
- __ load_earlyret_value(state);
-
- __ movptr(rdx, Address(r15_thread, JavaThread::jvmti_thread_state_offset()));
- Address cond_addr(rdx, JvmtiThreadState::earlyret_state_offset());
-
- // Clear the earlyret state
- __ movl(cond_addr, JvmtiThreadState::earlyret_inactive);
-
- __ remove_activation(state, rsi,
- false, /* throw_monitor_exception */
- false, /* install_monitor_exception */
- true); /* notify_jvmdi */
- __ jmp(rsi);
-
- return entry;
-} // end of ForceEarlyReturn support
-
-
-//-----------------------------------------------------------------------------
-// Helper for vtos entry point generation
-
-void TemplateInterpreterGenerator::set_vtos_entry_points(Template* t,
- address& bep,
- address& cep,
- address& sep,
- address& aep,
- address& iep,
- address& lep,
- address& fep,
- address& dep,
- address& vep) {
- assert(t->is_valid() && t->tos_in() == vtos, "illegal template");
- Label L;
- aep = __ pc(); __ push_ptr(); __ jmp(L);
- fep = __ pc(); __ push_f(xmm0); __ jmp(L);
- dep = __ pc(); __ push_d(xmm0); __ jmp(L);
- lep = __ pc(); __ push_l(); __ jmp(L);
- bep = cep = sep =
- iep = __ pc(); __ push_i();
- vep = __ pc();
- __ bind(L);
- generate_and_dispatch(t);
-}
-
-
-//-----------------------------------------------------------------------------
-// Generation of individual instructions
-
-// helpers for generate_and_dispatch
-
-
-InterpreterGenerator::InterpreterGenerator(StubQueue* code)
- : TemplateInterpreterGenerator(code) {
- generate_all(); // down here so it can be "virtual"
-}
-
-//-----------------------------------------------------------------------------
-
-// Non-product code
-#ifndef PRODUCT
-address TemplateInterpreterGenerator::generate_trace_code(TosState state) {
- address entry = __ pc();
-
- __ push(state);
- __ push(c_rarg0);
- __ push(c_rarg1);
- __ push(c_rarg2);
- __ push(c_rarg3);
- __ mov(c_rarg2, rax); // Pass itos
-#ifdef _WIN64
- __ movflt(xmm3, xmm0); // Pass ftos
-#endif
- __ call_VM(noreg,
- CAST_FROM_FN_PTR(address, SharedRuntime::trace_bytecode),
- c_rarg1, c_rarg2, c_rarg3);
- __ pop(c_rarg3);
- __ pop(c_rarg2);
- __ pop(c_rarg1);
- __ pop(c_rarg0);
- __ pop(state);
- __ ret(0); // return from result handler
-
- return entry;
-}
-
-void TemplateInterpreterGenerator::count_bytecode() {
- __ incrementl(ExternalAddress((address) &BytecodeCounter::_counter_value));
-}
-
-void TemplateInterpreterGenerator::histogram_bytecode(Template* t) {
- __ incrementl(ExternalAddress((address) &BytecodeHistogram::_counters[t->bytecode()]));
-}
-
-void TemplateInterpreterGenerator::histogram_bytecode_pair(Template* t) {
- __ mov32(rbx, ExternalAddress((address) &BytecodePairHistogram::_index));
- __ shrl(rbx, BytecodePairHistogram::log2_number_of_codes);
- __ orl(rbx,
- ((int) t->bytecode()) <<
- BytecodePairHistogram::log2_number_of_codes);
- __ mov32(ExternalAddress((address) &BytecodePairHistogram::_index), rbx);
- __ lea(rscratch1, ExternalAddress((address) BytecodePairHistogram::_counters));
- __ incrementl(Address(rscratch1, rbx, Address::times_4));
-}
-
-
-void TemplateInterpreterGenerator::trace_bytecode(Template* t) {
- // Call a little run-time stub to avoid blow-up for each bytecode.
- // The run-time runtime saves the right registers, depending on
- // the tosca in-state for the given template.
-
- assert(Interpreter::trace_code(t->tos_in()) != NULL,
- "entry must have been generated");
- __ mov(r12, rsp); // remember sp (can only use r12 if not using call_VM)
- __ andptr(rsp, -16); // align stack as required by ABI
- __ call(RuntimeAddress(Interpreter::trace_code(t->tos_in())));
- __ mov(rsp, r12); // restore sp
- __ reinit_heapbase();
-}
-
-
-void TemplateInterpreterGenerator::stop_interpreter_at() {
- Label L;
- __ cmp32(ExternalAddress((address) &BytecodeCounter::_counter_value),
- StopInterpreterAt);
- __ jcc(Assembler::notEqual, L);
- __ int3();
- __ bind(L);
-}
-#endif // !PRODUCT
-#endif // ! CC_INTERP
--- a/hotspot/src/cpu/x86/vm/templateTable_x86.cpp Sat Dec 05 15:17:29 2015 +0100
+++ b/hotspot/src/cpu/x86/vm/templateTable_x86.cpp Sat Dec 05 17:14:02 2015 +0000
@@ -43,8 +43,8 @@
#define __ _masm->
// Global Register Names
-Register rbcp = LP64_ONLY(r13) NOT_LP64(rsi);
-Register rlocals = LP64_ONLY(r14) NOT_LP64(rdi);
+static const Register rbcp = LP64_ONLY(r13) NOT_LP64(rsi);
+static const Register rlocals = LP64_ONLY(r14) NOT_LP64(rdi);
// Platform-dependent initialization
void TemplateTable::pd_initialize() {
--- a/hotspot/src/cpu/zero/vm/interpreter_zero.cpp Sat Dec 05 15:17:29 2015 +0100
+++ b/hotspot/src/cpu/zero/vm/interpreter_zero.cpp Sat Dec 05 17:14:02 2015 +0000
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved.
* Copyright 2007, 2008, 2009, 2010, 2011 Red Hat, Inc.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
@@ -38,7 +38,6 @@
#include "prims/jvmtiThreadState.hpp"
#include "prims/methodHandles.hpp"
#include "runtime/arguments.hpp"
-#include "runtime/deoptimization.hpp"
#include "runtime/frame.inline.hpp"
#include "runtime/sharedRuntime.hpp"
#include "runtime/stubRoutines.hpp"
@@ -74,7 +73,3 @@
bool AbstractInterpreter::can_be_compiled(methodHandle m) {
return true;
}
-
-void Deoptimization::unwind_callee_save_values(frame* f,
- vframeArray* vframe_array) {
-}
--- a/hotspot/src/share/vm/runtime/deoptimization.cpp Sat Dec 05 15:17:29 2015 +0100
+++ b/hotspot/src/share/vm/runtime/deoptimization.cpp Sat Dec 05 17:14:02 2015 +0000
@@ -571,6 +571,23 @@
thread->dec_in_deopt_handler();
}
+// Moved from cpu directories because none of the cpus has callee save values.
+// If a cpu implements callee save values, move this to deoptimization_<cpu>.cpp.
+void Deoptimization::unwind_callee_save_values(frame* f, vframeArray* vframe_array) {
+
+ // This code is sort of the equivalent of C2IAdapter::setup_stack_frame back in
+ // the days we had adapter frames. When we deoptimize a situation where a
+ // compiled caller calls a compiled caller will have registers it expects
+ // to survive the call to the callee. If we deoptimize the callee the only
+ // way we can restore these registers is to have the oldest interpreter
+ // frame that we create restore these values. That is what this routine
+ // will accomplish.
+
+ // At the moment we have modified c2 to not have any callee save registers
+ // so this problem does not exist and this routine is just a place holder.
+
+ assert(f->is_interpreted_frame(), "must be interpreted");
+}
// Return BasicType of value being returned
JRT_LEAF(BasicType, Deoptimization::unpack_frames(JavaThread* thread, int exec_mode))