--- a/hotspot/src/cpu/sparc/vm/templateInterpreter_sparc.cpp Sat Dec 05 05:15:35 2015 -0500
+++ b/hotspot/src/cpu/sparc/vm/templateInterpreter_sparc.cpp Sat Dec 05 10:40:22 2015 -0500
@@ -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