8013393: Merge template interpreter files for x86 _32 and _64.
Summary: The 32 and 64 bit versions of templateTable_x86 have been merged.
Reviewed-by: twisti, jrose, coleenp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/cpu/x86/vm/templateTable_x86.cpp Mon Mar 09 13:39:24 2015 -0400
@@ -0,0 +1,4235 @@
+/*
+ * 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/interpreterRuntime.hpp"
+#include "interpreter/interp_masm.hpp"
+#include "interpreter/templateTable.hpp"
+#include "memory/universe.inline.hpp"
+#include "oops/methodData.hpp"
+#include "oops/objArrayKlass.hpp"
+#include "oops/oop.inline.hpp"
+#include "prims/methodHandles.hpp"
+#include "runtime/sharedRuntime.hpp"
+#include "runtime/stubRoutines.hpp"
+#include "runtime/synchronizer.hpp"
+#include "utilities/macros.hpp"
+
+#ifndef CC_INTERP
+
+#define __ _masm->
+
+// Global Register Names
+Register rbcp = LP64_ONLY(r13) NOT_LP64(rsi);
+Register rlocals = LP64_ONLY(r14) NOT_LP64(rdi);
+
+// Platform-dependent initialization
+void TemplateTable::pd_initialize() {
+ // No x86 specific initialization
+}
+
+// Address Computation: local variables
+static inline Address iaddress(int n) {
+ return Address(rlocals, Interpreter::local_offset_in_bytes(n));
+}
+
+static inline Address laddress(int n) {
+ return iaddress(n + 1);
+}
+
+#ifndef _LP64
+static inline Address haddress(int n) {
+ return iaddress(n + 0);
+}
+#endif
+
+static inline Address faddress(int n) {
+ return iaddress(n);
+}
+
+static inline Address daddress(int n) {
+ return laddress(n);
+}
+
+static inline Address aaddress(int n) {
+ return iaddress(n);
+}
+
+static inline Address iaddress(Register r) {
+ return Address(rlocals, r, Address::times_ptr);
+}
+
+static inline Address laddress(Register r) {
+ return Address(rlocals, r, Address::times_ptr, Interpreter::local_offset_in_bytes(1));
+}
+
+#ifndef _LP64
+static inline Address haddress(Register r) {
+ return Address(rlocals, r, Interpreter::stackElementScale(), Interpreter::local_offset_in_bytes(0));
+}
+#endif
+
+static inline Address faddress(Register r) {
+ return iaddress(r);
+}
+
+static inline Address daddress(Register r) {
+ return laddress(r);
+}
+
+static inline Address aaddress(Register r) {
+ return iaddress(r);
+}
+
+
+// expression stack
+// (Note: Must not use symmetric equivalents at_rsp_m1/2 since they store
+// data beyond the rsp which is potentially unsafe in an MT environment;
+// an interrupt may overwrite that data.)
+static inline Address at_rsp () {
+ return Address(rsp, 0);
+}
+
+// At top of Java expression stack which may be different than esp(). It
+// isn't for category 1 objects.
+static inline Address at_tos () {
+ return Address(rsp, Interpreter::expr_offset_in_bytes(0));
+}
+
+static inline Address at_tos_p1() {
+ return Address(rsp, Interpreter::expr_offset_in_bytes(1));
+}
+
+static inline Address at_tos_p2() {
+ return Address(rsp, Interpreter::expr_offset_in_bytes(2));
+}
+
+// Condition conversion
+static Assembler::Condition j_not(TemplateTable::Condition cc) {
+ switch (cc) {
+ case TemplateTable::equal : return Assembler::notEqual;
+ case TemplateTable::not_equal : return Assembler::equal;
+ case TemplateTable::less : return Assembler::greaterEqual;
+ case TemplateTable::less_equal : return Assembler::greater;
+ case TemplateTable::greater : return Assembler::lessEqual;
+ case TemplateTable::greater_equal: return Assembler::less;
+ }
+ ShouldNotReachHere();
+ return Assembler::zero;
+}
+
+
+
+// Miscelaneous helper routines
+// Store an oop (or NULL) at the address described by obj.
+// If val == noreg this means store a NULL
+
+
+static void do_oop_store(InterpreterMacroAssembler* _masm,
+ Address obj,
+ Register val,
+ BarrierSet::Name barrier,
+ bool precise) {
+ assert(val == noreg || val == rax, "parameter is just for looks");
+ switch (barrier) {
+#if INCLUDE_ALL_GCS
+ case BarrierSet::G1SATBCT:
+ case BarrierSet::G1SATBCTLogging:
+ {
+ // flatten object address if needed
+ // We do it regardless of precise because we need the registers
+ if (obj.index() == noreg && obj.disp() == 0) {
+ if (obj.base() != rdx) {
+ __ movptr(rdx, obj.base());
+ }
+ } else {
+ __ lea(rdx, obj);
+ }
+
+ Register rtmp = LP64_ONLY(r8) NOT_LP64(rsi);
+ Register rthread = LP64_ONLY(r15_thread) NOT_LP64(rcx);
+
+ NOT_LP64(__ get_thread(rcx));
+ NOT_LP64(__ save_bcp());
+
+ __ g1_write_barrier_pre(rdx /* obj */,
+ rbx /* pre_val */,
+ rthread /* thread */,
+ rtmp /* tmp */,
+ val != noreg /* tosca_live */,
+ false /* expand_call */);
+ if (val == noreg) {
+ __ store_heap_oop_null(Address(rdx, 0));
+ } else {
+ // G1 barrier needs uncompressed oop for region cross check.
+ Register new_val = val;
+ if (UseCompressedOops) {
+ new_val = rbx;
+ __ movptr(new_val, val);
+ }
+ __ store_heap_oop(Address(rdx, 0), val);
+ __ g1_write_barrier_post(rdx /* store_adr */,
+ new_val /* new_val */,
+ rthread /* thread */,
+ rtmp /* tmp */,
+ rbx /* tmp2 */);
+ }
+ NOT_LP64( __ restore_bcp());
+ }
+ break;
+#endif // INCLUDE_ALL_GCS
+ case BarrierSet::CardTableModRef:
+ case BarrierSet::CardTableExtension:
+ {
+ if (val == noreg) {
+ __ store_heap_oop_null(obj);
+ } else {
+ __ store_heap_oop(obj, val);
+ // flatten object address if needed
+ if (!precise || (obj.index() == noreg && obj.disp() == 0)) {
+ __ store_check(obj.base());
+ } else {
+ __ lea(rdx, obj);
+ __ store_check(rdx);
+ }
+ }
+ }
+ break;
+ case BarrierSet::ModRef:
+ if (val == noreg) {
+ __ store_heap_oop_null(obj);
+ } else {
+ __ store_heap_oop(obj, val);
+ }
+ break;
+ default :
+ ShouldNotReachHere();
+
+ }
+}
+
+Address TemplateTable::at_bcp(int offset) {
+ assert(_desc->uses_bcp(), "inconsistent uses_bcp information");
+ return Address(rbcp, offset);
+}
+
+
+void TemplateTable::patch_bytecode(Bytecodes::Code bc, Register bc_reg,
+ Register temp_reg, bool load_bc_into_bc_reg/*=true*/,
+ int byte_no) {
+ if (!RewriteBytecodes) return;
+ Label L_patch_done;
+
+ switch (bc) {
+ case Bytecodes::_fast_aputfield:
+ case Bytecodes::_fast_bputfield:
+ case Bytecodes::_fast_cputfield:
+ case Bytecodes::_fast_dputfield:
+ case Bytecodes::_fast_fputfield:
+ case Bytecodes::_fast_iputfield:
+ case Bytecodes::_fast_lputfield:
+ case Bytecodes::_fast_sputfield:
+ {
+ // We skip bytecode quickening for putfield instructions when
+ // the put_code written to the constant pool cache is zero.
+ // This is required so that every execution of this instruction
+ // calls out to InterpreterRuntime::resolve_get_put to do
+ // additional, required work.
+ assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range");
+ assert(load_bc_into_bc_reg, "we use bc_reg as temp");
+ __ get_cache_and_index_and_bytecode_at_bcp(temp_reg, bc_reg, temp_reg, byte_no, 1);
+ __ movl(bc_reg, bc);
+ __ cmpl(temp_reg, (int) 0);
+ __ jcc(Assembler::zero, L_patch_done); // don't patch
+ }
+ break;
+ default:
+ assert(byte_no == -1, "sanity");
+ // the pair bytecodes have already done the load.
+ if (load_bc_into_bc_reg) {
+ __ movl(bc_reg, bc);
+ }
+ }
+
+ if (JvmtiExport::can_post_breakpoint()) {
+ Label L_fast_patch;
+ // if a breakpoint is present we can't rewrite the stream directly
+ __ movzbl(temp_reg, at_bcp(0));
+ __ cmpl(temp_reg, Bytecodes::_breakpoint);
+ __ jcc(Assembler::notEqual, L_fast_patch);
+ __ get_method(temp_reg);
+ // Let breakpoint table handling rewrite to quicker bytecode
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::set_original_bytecode_at), temp_reg, rbcp, bc_reg);
+#ifndef ASSERT
+ __ jmpb(L_patch_done);
+#else
+ __ jmp(L_patch_done);
+#endif
+ __ bind(L_fast_patch);
+ }
+
+#ifdef ASSERT
+ Label L_okay;
+ __ load_unsigned_byte(temp_reg, at_bcp(0));
+ __ cmpl(temp_reg, (int) Bytecodes::java_code(bc));
+ __ jcc(Assembler::equal, L_okay);
+ __ cmpl(temp_reg, bc_reg);
+ __ jcc(Assembler::equal, L_okay);
+ __ stop("patching the wrong bytecode");
+ __ bind(L_okay);
+#endif
+
+ // patch bytecode
+ __ movb(at_bcp(0), bc_reg);
+ __ bind(L_patch_done);
+}
+// Individual instructions
+
+
+void TemplateTable::nop() {
+ transition(vtos, vtos);
+ // nothing to do
+}
+
+void TemplateTable::shouldnotreachhere() {
+ transition(vtos, vtos);
+ __ stop("shouldnotreachhere bytecode");
+}
+
+void TemplateTable::aconst_null() {
+ transition(vtos, atos);
+ __ xorl(rax, rax);
+}
+
+void TemplateTable::iconst(int value) {
+ transition(vtos, itos);
+ if (value == 0) {
+ __ xorl(rax, rax);
+ } else {
+ __ movl(rax, value);
+ }
+}
+
+void TemplateTable::lconst(int value) {
+ transition(vtos, ltos);
+ if (value == 0) {
+ __ xorl(rax, rax);
+ } else {
+ __ movl(rax, value);
+ }
+#ifndef _LP64
+ assert(value >= 0, "check this code");
+ __ xorptr(rdx, rdx);
+#endif
+}
+
+
+
+void TemplateTable::fconst(int value) {
+ transition(vtos, ftos);
+#ifdef _LP64
+ static float one = 1.0f, two = 2.0f;
+ switch (value) {
+ case 0:
+ __ xorps(xmm0, xmm0);
+ break;
+ case 1:
+ __ movflt(xmm0, ExternalAddress((address) &one));
+ break;
+ case 2:
+ __ movflt(xmm0, ExternalAddress((address) &two));
+ break;
+ default:
+ ShouldNotReachHere();
+ break;
+ }
+#else
+ if (value == 0) { __ fldz();
+ } else if (value == 1) { __ fld1();
+ } else if (value == 2) { __ fld1(); __ fld1(); __ faddp(); // should do a better solution here
+ } else { ShouldNotReachHere();
+ }
+#endif
+}
+
+void TemplateTable::dconst(int value) {
+ transition(vtos, dtos);
+#ifdef _LP64
+ static double one = 1.0;
+ switch (value) {
+ case 0:
+ __ xorpd(xmm0, xmm0);
+ break;
+ case 1:
+ __ movdbl(xmm0, ExternalAddress((address) &one));
+ break;
+ default:
+ ShouldNotReachHere();
+ break;
+ }
+
+#else
+ if (value == 0) { __ fldz();
+ } else if (value == 1) { __ fld1();
+ } else { ShouldNotReachHere();
+ }
+#endif
+}
+
+void TemplateTable::bipush() {
+ transition(vtos, itos);
+ __ load_signed_byte(rax, at_bcp(1));
+}
+
+void TemplateTable::sipush() {
+ transition(vtos, itos);
+ __ load_unsigned_short(rax, at_bcp(1));
+ __ bswapl(rax);
+ __ sarl(rax, 16);
+}
+
+void TemplateTable::ldc(bool wide) {
+ transition(vtos, vtos);
+ Register rarg = NOT_LP64(rcx) LP64_ONLY(c_rarg1);
+ Label call_ldc, notFloat, notClass, Done;
+
+ if (wide) {
+ __ get_unsigned_2_byte_index_at_bcp(rbx, 1);
+ } else {
+ __ load_unsigned_byte(rbx, at_bcp(1));
+ }
+
+ __ get_cpool_and_tags(rcx, rax);
+ const int base_offset = ConstantPool::header_size() * wordSize;
+ const int tags_offset = Array<u1>::base_offset_in_bytes();
+
+ // get type
+ __ movzbl(rdx, Address(rax, rbx, Address::times_1, tags_offset));
+
+ // unresolved class - get the resolved class
+ __ cmpl(rdx, JVM_CONSTANT_UnresolvedClass);
+ __ jccb(Assembler::equal, call_ldc);
+
+ // unresolved class in error state - call into runtime to throw the error
+ // from the first resolution attempt
+ __ cmpl(rdx, JVM_CONSTANT_UnresolvedClassInError);
+ __ jccb(Assembler::equal, call_ldc);
+
+ // resolved class - need to call vm to get java mirror of the class
+ __ cmpl(rdx, JVM_CONSTANT_Class);
+ __ jcc(Assembler::notEqual, notClass);
+
+ __ bind(call_ldc);
+
+ __ movl(rarg, wide);
+ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::ldc), rarg);
+
+ __ push(atos);
+ __ jmp(Done);
+
+ __ bind(notClass);
+ __ cmpl(rdx, JVM_CONSTANT_Float);
+ __ jccb(Assembler::notEqual, notFloat);
+
+ // ftos
+ LP64_ONLY(__ movflt(xmm0, Address(rcx, rbx, Address::times_8, base_offset)));
+ NOT_LP64(__ fld_s( Address(rcx, rbx, Address::times_ptr, base_offset)));
+ __ push(ftos);
+ __ jmp(Done);
+
+ __ bind(notFloat);
+#ifdef ASSERT
+ {
+ Label L;
+ __ cmpl(rdx, JVM_CONSTANT_Integer);
+ __ jcc(Assembler::equal, L);
+ // String and Object are rewritten to fast_aldc
+ __ stop("unexpected tag type in ldc");
+ __ bind(L);
+ }
+#endif
+ // itos JVM_CONSTANT_Integer only
+ __ movl(rax, Address(rcx, rbx, Address::times_ptr, base_offset));
+ __ push(itos);
+ __ bind(Done);
+}
+
+// Fast path for caching oop constants.
+void TemplateTable::fast_aldc(bool wide) {
+ transition(vtos, atos);
+
+ Register result = rax;
+ Register tmp = rdx;
+ int index_size = wide ? sizeof(u2) : sizeof(u1);
+
+ Label resolved;
+
+ // We are resolved if the resolved reference cache entry contains a
+ // non-null object (String, MethodType, etc.)
+ assert_different_registers(result, tmp);
+ __ get_cache_index_at_bcp(tmp, 1, index_size);
+ __ load_resolved_reference_at_index(result, tmp);
+ __ testl(result, result);
+ __ jcc(Assembler::notZero, resolved);
+
+ address entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc);
+
+ // first time invocation - must resolve first
+ __ movl(tmp, (int)bytecode());
+ __ call_VM(result, entry, tmp);
+
+ __ bind(resolved);
+
+ if (VerifyOops) {
+ __ verify_oop(result);
+ }
+}
+
+void TemplateTable::ldc2_w() {
+ transition(vtos, vtos);
+ Label Long, Done;
+ __ get_unsigned_2_byte_index_at_bcp(rbx, 1);
+
+ __ get_cpool_and_tags(rcx, rax);
+ const int base_offset = ConstantPool::header_size() * wordSize;
+ const int tags_offset = Array<u1>::base_offset_in_bytes();
+
+ // get type
+ __ cmpb(Address(rax, rbx, Address::times_1, tags_offset),
+ JVM_CONSTANT_Double);
+ __ jccb(Assembler::notEqual, Long);
+
+ // dtos
+ LP64_ONLY(__ movdbl(xmm0, Address(rcx, rbx, Address::times_8, base_offset)));
+ NOT_LP64(__ fld_d( Address(rcx, rbx, Address::times_ptr, base_offset)));
+ __ push(dtos);
+
+ __ jmpb(Done);
+ __ bind(Long);
+
+ // ltos
+ __ movptr(rax, Address(rcx, rbx, Address::times_ptr, base_offset + 0 * wordSize));
+ NOT_LP64(__ movptr(rdx, Address(rcx, rbx, Address::times_ptr, base_offset + 1 * wordSize)));
+ __ push(ltos);
+
+ __ bind(Done);
+}
+
+void TemplateTable::locals_index(Register reg, int offset) {
+ __ load_unsigned_byte(reg, at_bcp(offset));
+ __ negptr(reg);
+}
+
+void TemplateTable::iload() {
+ transition(vtos, itos);
+ if (RewriteFrequentPairs) {
+ Label rewrite, done;
+ const Register bc = LP64_ONLY(c_rarg3) NOT_LP64(rcx);
+ LP64_ONLY(assert(rbx != bc, "register damaged"));
+
+ // get next byte
+ __ load_unsigned_byte(rbx,
+ at_bcp(Bytecodes::length_for(Bytecodes::_iload)));
+ // if _iload, wait to rewrite to iload2. We only want to rewrite the
+ // last two iloads in a pair. Comparing against fast_iload means that
+ // the next bytecode is neither an iload or a caload, and therefore
+ // an iload pair.
+ __ cmpl(rbx, Bytecodes::_iload);
+ __ jcc(Assembler::equal, done);
+
+ __ cmpl(rbx, Bytecodes::_fast_iload);
+ __ movl(bc, Bytecodes::_fast_iload2);
+
+ __ jccb(Assembler::equal, rewrite);
+
+ // if _caload, rewrite to fast_icaload
+ __ cmpl(rbx, Bytecodes::_caload);
+ __ movl(bc, Bytecodes::_fast_icaload);
+ __ jccb(Assembler::equal, rewrite);
+
+ // rewrite so iload doesn't check again.
+ __ movl(bc, Bytecodes::_fast_iload);
+
+ // rewrite
+ // bc: fast bytecode
+ __ bind(rewrite);
+ patch_bytecode(Bytecodes::_iload, bc, rbx, false);
+ __ bind(done);
+ }
+
+ // Get the local value into tos
+ locals_index(rbx);
+ __ movl(rax, iaddress(rbx));
+}
+
+void TemplateTable::fast_iload2() {
+ transition(vtos, itos);
+ locals_index(rbx);
+ __ movl(rax, iaddress(rbx));
+ __ push(itos);
+ locals_index(rbx, 3);
+ __ movl(rax, iaddress(rbx));
+}
+
+void TemplateTable::fast_iload() {
+ transition(vtos, itos);
+ locals_index(rbx);
+ __ movl(rax, iaddress(rbx));
+}
+
+void TemplateTable::lload() {
+ transition(vtos, ltos);
+ locals_index(rbx);
+ __ movptr(rax, laddress(rbx));
+ NOT_LP64(__ movl(rdx, haddress(rbx)));
+}
+
+void TemplateTable::fload() {
+ transition(vtos, ftos);
+ locals_index(rbx);
+ LP64_ONLY(__ movflt(xmm0, faddress(rbx)));
+ NOT_LP64(__ fld_s(faddress(rbx)));
+}
+
+void TemplateTable::dload() {
+ transition(vtos, dtos);
+ locals_index(rbx);
+ LP64_ONLY(__ movdbl(xmm0, daddress(rbx)));
+ NOT_LP64(__ fld_d(daddress(rbx)));
+}
+
+void TemplateTable::aload() {
+ transition(vtos, atos);
+ locals_index(rbx);
+ __ movptr(rax, aaddress(rbx));
+}
+
+void TemplateTable::locals_index_wide(Register reg) {
+ __ load_unsigned_short(reg, at_bcp(2));
+ __ bswapl(reg);
+ __ shrl(reg, 16);
+ __ negptr(reg);
+}
+
+void TemplateTable::wide_iload() {
+ transition(vtos, itos);
+ locals_index_wide(rbx);
+ __ movl(rax, iaddress(rbx));
+}
+
+void TemplateTable::wide_lload() {
+ transition(vtos, ltos);
+ locals_index_wide(rbx);
+ __ movptr(rax, laddress(rbx));
+ NOT_LP64(__ movl(rdx, haddress(rbx)));
+}
+
+void TemplateTable::wide_fload() {
+ transition(vtos, ftos);
+ locals_index_wide(rbx);
+ LP64_ONLY(__ movflt(xmm0, faddress(rbx)));
+ NOT_LP64(__ fld_s(faddress(rbx)));
+}
+
+void TemplateTable::wide_dload() {
+ transition(vtos, dtos);
+ locals_index_wide(rbx);
+ LP64_ONLY(__ movdbl(xmm0, daddress(rbx)));
+ NOT_LP64(__ fld_d(daddress(rbx)));
+}
+
+void TemplateTable::wide_aload() {
+ transition(vtos, atos);
+ locals_index_wide(rbx);
+ __ movptr(rax, aaddress(rbx));
+}
+
+void TemplateTable::index_check(Register array, Register index) {
+ // Pop ptr into array
+ __ pop_ptr(array);
+ index_check_without_pop(array, index);
+}
+
+void TemplateTable::index_check_without_pop(Register array, Register index) {
+ // destroys rbx
+ // check array
+ __ null_check(array, arrayOopDesc::length_offset_in_bytes());
+ // sign extend index for use by indexed load
+ __ movl2ptr(index, index);
+ // check index
+ __ cmpl(index, Address(array, arrayOopDesc::length_offset_in_bytes()));
+ if (index != rbx) {
+ // ??? convention: move aberrant index into rbx for exception message
+ assert(rbx != array, "different registers");
+ __ movl(rbx, index);
+ }
+ __ jump_cc(Assembler::aboveEqual,
+ ExternalAddress(Interpreter::_throw_ArrayIndexOutOfBoundsException_entry));
+}
+
+
+void TemplateTable::iaload() {
+ transition(itos, itos);
+ // rax: index
+ // rdx: array
+ index_check(rdx, rax); // kills rbx
+ __ movl(rax, Address(rdx, rax,
+ Address::times_4,
+ arrayOopDesc::base_offset_in_bytes(T_INT)));
+}
+
+void TemplateTable::laload() {
+ transition(itos, ltos);
+ // rax: index
+ // rdx: array
+ index_check(rdx, rax); // kills rbx
+ NOT_LP64(__ mov(rbx, rax));
+ // rbx,: index
+ __ movptr(rax, Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 0 * wordSize));
+ NOT_LP64(__ movl(rdx, Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 1 * wordSize)));
+}
+
+
+
+void TemplateTable::faload() {
+ transition(itos, ftos);
+ // rax: index
+ // rdx: array
+ index_check(rdx, rax); // kills rbx
+ LP64_ONLY(__ movflt(xmm0, Address(rdx, rax,
+ Address::times_4,
+ arrayOopDesc::base_offset_in_bytes(T_FLOAT))));
+ NOT_LP64(__ fld_s(Address(rdx, rax, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_FLOAT))));
+}
+
+void TemplateTable::daload() {
+ transition(itos, dtos);
+ // rax: index
+ // rdx: array
+ index_check(rdx, rax); // kills rbx
+ LP64_ONLY(__ movdbl(xmm0, Address(rdx, rax,
+ Address::times_8,
+ arrayOopDesc::base_offset_in_bytes(T_DOUBLE))));
+ NOT_LP64(__ fld_d(Address(rdx, rax, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_DOUBLE))));
+}
+
+void TemplateTable::aaload() {
+ transition(itos, atos);
+ // rax: index
+ // rdx: array
+ index_check(rdx, rax); // kills rbx
+ __ load_heap_oop(rax, Address(rdx, rax,
+ UseCompressedOops ? Address::times_4 : Address::times_ptr,
+ arrayOopDesc::base_offset_in_bytes(T_OBJECT)));
+}
+
+void TemplateTable::baload() {
+ transition(itos, itos);
+ // rax: index
+ // rdx: array
+ index_check(rdx, rax); // kills rbx
+ __ load_signed_byte(rax, Address(rdx, rax, Address::times_1, arrayOopDesc::base_offset_in_bytes(T_BYTE)));
+}
+
+void TemplateTable::caload() {
+ transition(itos, itos);
+ // rax: index
+ // rdx: array
+ index_check(rdx, rax); // kills rbx
+ __ load_unsigned_short(rax, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR)));
+}
+
+// iload followed by caload frequent pair
+void TemplateTable::fast_icaload() {
+ transition(vtos, itos);
+ // load index out of locals
+ locals_index(rbx);
+ __ movl(rax, iaddress(rbx));
+
+ // rax: index
+ // rdx: array
+ index_check(rdx, rax); // kills rbx
+ __ load_unsigned_short(rax,
+ Address(rdx, rax,
+ Address::times_2,
+ arrayOopDesc::base_offset_in_bytes(T_CHAR)));
+}
+
+
+void TemplateTable::saload() {
+ transition(itos, itos);
+ // rax: index
+ // rdx: array
+ index_check(rdx, rax); // kills rbx
+ __ load_signed_short(rax, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_SHORT)));
+}
+
+void TemplateTable::iload(int n) {
+ transition(vtos, itos);
+ __ movl(rax, iaddress(n));
+}
+
+void TemplateTable::lload(int n) {
+ transition(vtos, ltos);
+ __ movptr(rax, laddress(n));
+ NOT_LP64(__ movptr(rdx, haddress(n)));
+}
+
+void TemplateTable::fload(int n) {
+ transition(vtos, ftos);
+ LP64_ONLY(__ movflt(xmm0, faddress(n)));
+ NOT_LP64(__ fld_s(faddress(n)));
+}
+
+void TemplateTable::dload(int n) {
+ transition(vtos, dtos);
+ LP64_ONLY(__ movdbl(xmm0, daddress(n)));
+ NOT_LP64(__ fld_d(daddress(n)));
+}
+
+void TemplateTable::aload(int n) {
+ transition(vtos, atos);
+ __ movptr(rax, aaddress(n));
+}
+
+void TemplateTable::aload_0() {
+ transition(vtos, atos);
+ // According to bytecode histograms, the pairs:
+ //
+ // _aload_0, _fast_igetfield
+ // _aload_0, _fast_agetfield
+ // _aload_0, _fast_fgetfield
+ //
+ // occur frequently. If RewriteFrequentPairs is set, the (slow)
+ // _aload_0 bytecode checks if the next bytecode is either
+ // _fast_igetfield, _fast_agetfield or _fast_fgetfield and then
+ // rewrites the current bytecode into a pair bytecode; otherwise it
+ // rewrites the current bytecode into _fast_aload_0 that doesn't do
+ // the pair check anymore.
+ //
+ // Note: If the next bytecode is _getfield, the rewrite must be
+ // delayed, otherwise we may miss an opportunity for a pair.
+ //
+ // Also rewrite frequent pairs
+ // aload_0, aload_1
+ // aload_0, iload_1
+ // These bytecodes with a small amount of code are most profitable
+ // to rewrite
+ if (RewriteFrequentPairs) {
+ Label rewrite, done;
+
+ const Register bc = LP64_ONLY(c_rarg3) NOT_LP64(rcx);
+ LP64_ONLY(assert(rbx != bc, "register damaged"));
+
+ // get next byte
+ __ load_unsigned_byte(rbx, at_bcp(Bytecodes::length_for(Bytecodes::_aload_0)));
+
+ // do actual aload_0
+ aload(0);
+
+ // if _getfield then wait with rewrite
+ __ cmpl(rbx, Bytecodes::_getfield);
+ __ jcc(Assembler::equal, done);
+
+ // if _igetfield then reqrite to _fast_iaccess_0
+ assert(Bytecodes::java_code(Bytecodes::_fast_iaccess_0) == Bytecodes::_aload_0, "fix bytecode definition");
+ __ cmpl(rbx, Bytecodes::_fast_igetfield);
+ __ movl(bc, Bytecodes::_fast_iaccess_0);
+ __ jccb(Assembler::equal, rewrite);
+
+ // if _agetfield then reqrite to _fast_aaccess_0
+ assert(Bytecodes::java_code(Bytecodes::_fast_aaccess_0) == Bytecodes::_aload_0, "fix bytecode definition");
+ __ cmpl(rbx, Bytecodes::_fast_agetfield);
+ __ movl(bc, Bytecodes::_fast_aaccess_0);
+ __ jccb(Assembler::equal, rewrite);
+
+ // if _fgetfield then reqrite to _fast_faccess_0
+ assert(Bytecodes::java_code(Bytecodes::_fast_faccess_0) == Bytecodes::_aload_0, "fix bytecode definition");
+ __ cmpl(rbx, Bytecodes::_fast_fgetfield);
+ __ movl(bc, Bytecodes::_fast_faccess_0);
+ __ jccb(Assembler::equal, rewrite);
+
+ // else rewrite to _fast_aload0
+ assert(Bytecodes::java_code(Bytecodes::_fast_aload_0) == Bytecodes::_aload_0, "fix bytecode definition");
+ __ movl(bc, Bytecodes::_fast_aload_0);
+
+ // rewrite
+ // bc: fast bytecode
+ __ bind(rewrite);
+ patch_bytecode(Bytecodes::_aload_0, bc, rbx, false);
+
+ __ bind(done);
+ } else {
+ aload(0);
+ }
+}
+
+void TemplateTable::istore() {
+ transition(itos, vtos);
+ locals_index(rbx);
+ __ movl(iaddress(rbx), rax);
+}
+
+
+void TemplateTable::lstore() {
+ transition(ltos, vtos);
+ locals_index(rbx);
+ __ movptr(laddress(rbx), rax);
+ NOT_LP64(__ movptr(haddress(rbx), rdx));
+}
+
+void TemplateTable::fstore() {
+ transition(ftos, vtos);
+ locals_index(rbx);
+ LP64_ONLY(__ movflt(faddress(rbx), xmm0));
+ NOT_LP64(__ fstp_s(faddress(rbx)));
+}
+
+void TemplateTable::dstore() {
+ transition(dtos, vtos);
+ locals_index(rbx);
+ LP64_ONLY(__ movdbl(daddress(rbx), xmm0));
+ NOT_LP64(__ fstp_d(daddress(rbx)));
+}
+
+void TemplateTable::astore() {
+ transition(vtos, vtos);
+ __ pop_ptr(rax);
+ locals_index(rbx);
+ __ movptr(aaddress(rbx), rax);
+}
+
+void TemplateTable::wide_istore() {
+ transition(vtos, vtos);
+ __ pop_i();
+ locals_index_wide(rbx);
+ __ movl(iaddress(rbx), rax);
+}
+
+void TemplateTable::wide_lstore() {
+ transition(vtos, vtos);
+ NOT_LP64(__ pop_l(rax, rdx));
+ LP64_ONLY(__ pop_l());
+ locals_index_wide(rbx);
+ __ movptr(laddress(rbx), rax);
+ NOT_LP64(__ movl(haddress(rbx), rdx));
+}
+
+void TemplateTable::wide_fstore() {
+#ifdef _LP64
+ transition(vtos, vtos);
+ __ pop_f();
+ locals_index_wide(rbx);
+ __ movflt(faddress(rbx), xmm0);
+#else
+ wide_istore();
+#endif
+}
+
+void TemplateTable::wide_dstore() {
+#ifdef _LP64
+ transition(vtos, vtos);
+ __ pop_d();
+ locals_index_wide(rbx);
+ __ movdbl(daddress(rbx), xmm0);
+#else
+ wide_lstore();
+#endif
+}
+
+void TemplateTable::wide_astore() {
+ transition(vtos, vtos);
+ __ pop_ptr(rax);
+ locals_index_wide(rbx);
+ __ movptr(aaddress(rbx), rax);
+}
+
+void TemplateTable::iastore() {
+ transition(itos, vtos);
+ __ pop_i(rbx);
+ // rax: value
+ // rbx: index
+ // rdx: array
+ index_check(rdx, rbx); // prefer index in rbx
+ __ movl(Address(rdx, rbx,
+ Address::times_4,
+ arrayOopDesc::base_offset_in_bytes(T_INT)),
+ rax);
+}
+
+void TemplateTable::lastore() {
+ transition(ltos, vtos);
+ __ pop_i(rbx);
+ // rax,: low(value)
+ // rcx: array
+ // rdx: high(value)
+ index_check(rcx, rbx); // prefer index in rbx,
+ // rbx,: index
+ __ movptr(Address(rcx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 0 * wordSize), rax);
+ NOT_LP64(__ movl(Address(rcx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 1 * wordSize), rdx));
+}
+
+
+void TemplateTable::fastore() {
+ transition(ftos, vtos);
+ __ pop_i(rbx);
+ // xmm0: value
+ // rbx: index
+ // rdx: array
+ index_check(rdx, rbx); // prefer index in rbx
+ LP64_ONLY(__ movflt(Address(rdx, rbx,
+ Address::times_4,
+ arrayOopDesc::base_offset_in_bytes(T_FLOAT)),
+ xmm0));
+ NOT_LP64(__ fstp_s(Address(rdx, rbx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_FLOAT))));
+}
+
+void TemplateTable::dastore() {
+ transition(dtos, vtos);
+ __ pop_i(rbx);
+ // xmm0: value
+ // rbx: index
+ // rdx: array
+ index_check(rdx, rbx); // prefer index in rbx
+ LP64_ONLY(__ movdbl(Address(rdx, rbx,
+ Address::times_8,
+ arrayOopDesc::base_offset_in_bytes(T_DOUBLE)),
+ xmm0));
+ NOT_LP64(__ fstp_d(Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_DOUBLE))));
+}
+
+void TemplateTable::aastore() {
+ Label is_null, ok_is_subtype, done;
+ transition(vtos, vtos);
+ // stack: ..., array, index, value
+ __ movptr(rax, at_tos()); // value
+ __ movl(rcx, at_tos_p1()); // index
+ __ movptr(rdx, at_tos_p2()); // array
+
+ Address element_address(rdx, rcx,
+ UseCompressedOops? Address::times_4 : Address::times_ptr,
+ arrayOopDesc::base_offset_in_bytes(T_OBJECT));
+
+ index_check_without_pop(rdx, rcx); // kills rbx
+ __ testptr(rax, rax);
+ __ jcc(Assembler::zero, is_null);
+
+ // Move subklass into rbx
+ __ load_klass(rbx, rax);
+ // Move superklass into rax
+ __ load_klass(rax, rdx);
+ __ movptr(rax, Address(rax,
+ ObjArrayKlass::element_klass_offset()));
+ // Compress array + index*oopSize + 12 into a single register. Frees rcx.
+ __ lea(rdx, element_address);
+
+ // Generate subtype check. Blows rcx, rdi
+ // Superklass in rax. Subklass in rbx.
+ __ gen_subtype_check(rbx, ok_is_subtype);
+
+ // Come here on failure
+ // object is at TOS
+ __ jump(ExternalAddress(Interpreter::_throw_ArrayStoreException_entry));
+
+ // Come here on success
+ __ bind(ok_is_subtype);
+
+ // Get the value we will store
+ __ movptr(rax, at_tos());
+ // Now store using the appropriate barrier
+ do_oop_store(_masm, Address(rdx, 0), rax, _bs->kind(), true);
+ __ jmp(done);
+
+ // Have a NULL in rax, rdx=array, ecx=index. Store NULL at ary[idx]
+ __ bind(is_null);
+ __ profile_null_seen(rbx);
+
+ // Store a NULL
+ do_oop_store(_masm, element_address, noreg, _bs->kind(), true);
+
+ // Pop stack arguments
+ __ bind(done);
+ __ addptr(rsp, 3 * Interpreter::stackElementSize);
+}
+
+void TemplateTable::bastore() {
+ transition(itos, vtos);
+ __ pop_i(rbx);
+ // rax: value
+ // rbx: index
+ // rdx: array
+ index_check(rdx, rbx); // prefer index in rbx
+ __ movb(Address(rdx, rbx,
+ Address::times_1,
+ arrayOopDesc::base_offset_in_bytes(T_BYTE)),
+ rax);
+}
+
+void TemplateTable::castore() {
+ transition(itos, vtos);
+ __ pop_i(rbx);
+ // rax: value
+ // rbx: index
+ // rdx: array
+ index_check(rdx, rbx); // prefer index in rbx
+ __ movw(Address(rdx, rbx,
+ Address::times_2,
+ arrayOopDesc::base_offset_in_bytes(T_CHAR)),
+ rax);
+}
+
+
+void TemplateTable::sastore() {
+ castore();
+}
+
+void TemplateTable::istore(int n) {
+ transition(itos, vtos);
+ __ movl(iaddress(n), rax);
+}
+
+void TemplateTable::lstore(int n) {
+ transition(ltos, vtos);
+ __ movptr(laddress(n), rax);
+ NOT_LP64(__ movptr(haddress(n), rdx));
+}
+
+void TemplateTable::fstore(int n) {
+ transition(ftos, vtos);
+ LP64_ONLY(__ movflt(faddress(n), xmm0));
+ NOT_LP64(__ fstp_s(faddress(n)));
+}
+
+void TemplateTable::dstore(int n) {
+ transition(dtos, vtos);
+ LP64_ONLY(__ movdbl(daddress(n), xmm0));
+ NOT_LP64(__ fstp_d(daddress(n)));
+}
+
+
+void TemplateTable::astore(int n) {
+ transition(vtos, vtos);
+ __ pop_ptr(rax);
+ __ movptr(aaddress(n), rax);
+}
+
+void TemplateTable::pop() {
+ transition(vtos, vtos);
+ __ addptr(rsp, Interpreter::stackElementSize);
+}
+
+void TemplateTable::pop2() {
+ transition(vtos, vtos);
+ __ addptr(rsp, 2 * Interpreter::stackElementSize);
+}
+
+
+void TemplateTable::dup() {
+ transition(vtos, vtos);
+ __ load_ptr(0, rax);
+ __ push_ptr(rax);
+ // stack: ..., a, a
+}
+
+void TemplateTable::dup_x1() {
+ transition(vtos, vtos);
+ // stack: ..., a, b
+ __ load_ptr( 0, rax); // load b
+ __ load_ptr( 1, rcx); // load a
+ __ store_ptr(1, rax); // store b
+ __ store_ptr(0, rcx); // store a
+ __ push_ptr(rax); // push b
+ // stack: ..., b, a, b
+}
+
+void TemplateTable::dup_x2() {
+ transition(vtos, vtos);
+ // stack: ..., a, b, c
+ __ load_ptr( 0, rax); // load c
+ __ load_ptr( 2, rcx); // load a
+ __ store_ptr(2, rax); // store c in a
+ __ push_ptr(rax); // push c
+ // stack: ..., c, b, c, c
+ __ load_ptr( 2, rax); // load b
+ __ store_ptr(2, rcx); // store a in b
+ // stack: ..., c, a, c, c
+ __ store_ptr(1, rax); // store b in c
+ // stack: ..., c, a, b, c
+}
+
+void TemplateTable::dup2() {
+ transition(vtos, vtos);
+ // stack: ..., a, b
+ __ load_ptr(1, rax); // load a
+ __ push_ptr(rax); // push a
+ __ load_ptr(1, rax); // load b
+ __ push_ptr(rax); // push b
+ // stack: ..., a, b, a, b
+}
+
+
+void TemplateTable::dup2_x1() {
+ transition(vtos, vtos);
+ // stack: ..., a, b, c
+ __ load_ptr( 0, rcx); // load c
+ __ load_ptr( 1, rax); // load b
+ __ push_ptr(rax); // push b
+ __ push_ptr(rcx); // push c
+ // stack: ..., a, b, c, b, c
+ __ store_ptr(3, rcx); // store c in b
+ // stack: ..., a, c, c, b, c
+ __ load_ptr( 4, rcx); // load a
+ __ store_ptr(2, rcx); // store a in 2nd c
+ // stack: ..., a, c, a, b, c
+ __ store_ptr(4, rax); // store b in a
+ // stack: ..., b, c, a, b, c
+}
+
+void TemplateTable::dup2_x2() {
+ transition(vtos, vtos);
+ // stack: ..., a, b, c, d
+ __ load_ptr( 0, rcx); // load d
+ __ load_ptr( 1, rax); // load c
+ __ push_ptr(rax); // push c
+ __ push_ptr(rcx); // push d
+ // stack: ..., a, b, c, d, c, d
+ __ load_ptr( 4, rax); // load b
+ __ store_ptr(2, rax); // store b in d
+ __ store_ptr(4, rcx); // store d in b
+ // stack: ..., a, d, c, b, c, d
+ __ load_ptr( 5, rcx); // load a
+ __ load_ptr( 3, rax); // load c
+ __ store_ptr(3, rcx); // store a in c
+ __ store_ptr(5, rax); // store c in a
+ // stack: ..., c, d, a, b, c, d
+}
+
+void TemplateTable::swap() {
+ transition(vtos, vtos);
+ // stack: ..., a, b
+ __ load_ptr( 1, rcx); // load a
+ __ load_ptr( 0, rax); // load b
+ __ store_ptr(0, rcx); // store a in b
+ __ store_ptr(1, rax); // store b in a
+ // stack: ..., b, a
+}
+
+void TemplateTable::iop2(Operation op) {
+ transition(itos, itos);
+ switch (op) {
+ case add : __ pop_i(rdx); __ addl (rax, rdx); break;
+ case sub : __ movl(rdx, rax); __ pop_i(rax); __ subl (rax, rdx); break;
+ case mul : __ pop_i(rdx); __ imull(rax, rdx); break;
+ case _and : __ pop_i(rdx); __ andl (rax, rdx); break;
+ case _or : __ pop_i(rdx); __ orl (rax, rdx); break;
+ case _xor : __ pop_i(rdx); __ xorl (rax, rdx); break;
+ case shl : __ movl(rcx, rax); __ pop_i(rax); __ shll (rax); break;
+ case shr : __ movl(rcx, rax); __ pop_i(rax); __ sarl (rax); break;
+ case ushr : __ movl(rcx, rax); __ pop_i(rax); __ shrl (rax); break;
+ default : ShouldNotReachHere();
+ }
+}
+
+void TemplateTable::lop2(Operation op) {
+ transition(ltos, ltos);
+#ifdef _LP64
+ switch (op) {
+ case add : __ pop_l(rdx); __ addptr(rax, rdx); break;
+ case sub : __ mov(rdx, rax); __ pop_l(rax); __ subptr(rax, rdx); break;
+ case _and : __ pop_l(rdx); __ andptr(rax, rdx); break;
+ case _or : __ pop_l(rdx); __ orptr (rax, rdx); break;
+ case _xor : __ pop_l(rdx); __ xorptr(rax, rdx); break;
+ default : ShouldNotReachHere();
+ }
+#else
+ __ pop_l(rbx, rcx);
+ switch (op) {
+ case add : __ addl(rax, rbx); __ adcl(rdx, rcx); break;
+ case sub : __ subl(rbx, rax); __ sbbl(rcx, rdx);
+ __ mov (rax, rbx); __ mov (rdx, rcx); break;
+ case _and : __ andl(rax, rbx); __ andl(rdx, rcx); break;
+ case _or : __ orl (rax, rbx); __ orl (rdx, rcx); break;
+ case _xor : __ xorl(rax, rbx); __ xorl(rdx, rcx); break;
+ default : ShouldNotReachHere();
+ }
+#endif
+}
+
+void TemplateTable::idiv() {
+ transition(itos, itos);
+ __ movl(rcx, rax);
+ __ pop_i(rax);
+ // Note: could xor rax and ecx and compare with (-1 ^ min_int). If
+ // they are not equal, one could do a normal division (no correction
+ // needed), which may speed up this implementation for the common case.
+ // (see also JVM spec., p.243 & p.271)
+ __ corrected_idivl(rcx);
+}
+
+void TemplateTable::irem() {
+ transition(itos, itos);
+ __ movl(rcx, rax);
+ __ pop_i(rax);
+ // Note: could xor rax and ecx and compare with (-1 ^ min_int). If
+ // they are not equal, one could do a normal division (no correction
+ // needed), which may speed up this implementation for the common case.
+ // (see also JVM spec., p.243 & p.271)
+ __ corrected_idivl(rcx);
+ __ movl(rax, rdx);
+}
+
+void TemplateTable::lmul() {
+ transition(ltos, ltos);
+#ifdef _LP64
+ __ pop_l(rdx);
+ __ imulq(rax, rdx);
+#else
+ __ pop_l(rbx, rcx);
+ __ push(rcx); __ push(rbx);
+ __ push(rdx); __ push(rax);
+ __ lmul(2 * wordSize, 0);
+ __ addptr(rsp, 4 * wordSize); // take off temporaries
+#endif
+}
+
+void TemplateTable::ldiv() {
+ transition(ltos, ltos);
+#ifdef _LP64
+ __ mov(rcx, rax);
+ __ pop_l(rax);
+ // generate explicit div0 check
+ __ testq(rcx, rcx);
+ __ jump_cc(Assembler::zero,
+ ExternalAddress(Interpreter::_throw_ArithmeticException_entry));
+ // Note: could xor rax and rcx and compare with (-1 ^ min_int). If
+ // they are not equal, one could do a normal division (no correction
+ // needed), which may speed up this implementation for the common case.
+ // (see also JVM spec., p.243 & p.271)
+ __ corrected_idivq(rcx); // kills rbx
+#else
+ __ pop_l(rbx, rcx);
+ __ push(rcx); __ push(rbx);
+ __ push(rdx); __ push(rax);
+ // check if y = 0
+ __ orl(rax, rdx);
+ __ jump_cc(Assembler::zero,
+ ExternalAddress(Interpreter::_throw_ArithmeticException_entry));
+ __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::ldiv));
+ __ addptr(rsp, 4 * wordSize); // take off temporaries
+#endif
+}
+
+void TemplateTable::lrem() {
+ transition(ltos, ltos);
+#ifdef _LP64
+ __ mov(rcx, rax);
+ __ pop_l(rax);
+ __ testq(rcx, rcx);
+ __ jump_cc(Assembler::zero,
+ ExternalAddress(Interpreter::_throw_ArithmeticException_entry));
+ // Note: could xor rax and rcx and compare with (-1 ^ min_int). If
+ // they are not equal, one could do a normal division (no correction
+ // needed), which may speed up this implementation for the common case.
+ // (see also JVM spec., p.243 & p.271)
+ __ corrected_idivq(rcx); // kills rbx
+ __ mov(rax, rdx);
+#else
+ __ pop_l(rbx, rcx);
+ __ push(rcx); __ push(rbx);
+ __ push(rdx); __ push(rax);
+ // check if y = 0
+ __ orl(rax, rdx);
+ __ jump_cc(Assembler::zero,
+ ExternalAddress(Interpreter::_throw_ArithmeticException_entry));
+ __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::lrem));
+ __ addptr(rsp, 4 * wordSize);
+#endif
+}
+
+void TemplateTable::lshl() {
+ transition(itos, ltos);
+ __ movl(rcx, rax); // get shift count
+ #ifdef _LP64
+ __ pop_l(rax); // get shift value
+ __ shlq(rax);
+#else
+ __ pop_l(rax, rdx); // get shift value
+ __ lshl(rdx, rax);
+#endif
+}
+
+void TemplateTable::lshr() {
+#ifdef _LP64
+ transition(itos, ltos);
+ __ movl(rcx, rax); // get shift count
+ __ pop_l(rax); // get shift value
+ __ sarq(rax);
+#else
+ transition(itos, ltos);
+ __ mov(rcx, rax); // get shift count
+ __ pop_l(rax, rdx); // get shift value
+ __ lshr(rdx, rax, true);
+#endif
+}
+
+void TemplateTable::lushr() {
+ transition(itos, ltos);
+#ifdef _LP64
+ __ movl(rcx, rax); // get shift count
+ __ pop_l(rax); // get shift value
+ __ shrq(rax);
+#else
+ __ mov(rcx, rax); // get shift count
+ __ pop_l(rax, rdx); // get shift value
+ __ lshr(rdx, rax);
+#endif
+}
+
+void TemplateTable::fop2(Operation op) {
+ transition(ftos, ftos);
+#ifdef _LP64
+ switch (op) {
+ case add:
+ __ addss(xmm0, at_rsp());
+ __ addptr(rsp, Interpreter::stackElementSize);
+ break;
+ case sub:
+ __ movflt(xmm1, xmm0);
+ __ pop_f(xmm0);
+ __ subss(xmm0, xmm1);
+ break;
+ case mul:
+ __ mulss(xmm0, at_rsp());
+ __ addptr(rsp, Interpreter::stackElementSize);
+ break;
+ case div:
+ __ movflt(xmm1, xmm0);
+ __ pop_f(xmm0);
+ __ divss(xmm0, xmm1);
+ break;
+ case rem:
+ __ movflt(xmm1, xmm0);
+ __ pop_f(xmm0);
+ __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::frem), 2);
+ break;
+ default:
+ ShouldNotReachHere();
+ break;
+ }
+#else
+ switch (op) {
+ case add: __ fadd_s (at_rsp()); break;
+ case sub: __ fsubr_s(at_rsp()); break;
+ case mul: __ fmul_s (at_rsp()); break;
+ case div: __ fdivr_s(at_rsp()); break;
+ case rem: __ fld_s (at_rsp()); __ fremr(rax); break;
+ default : ShouldNotReachHere();
+ }
+ __ f2ieee();
+ __ pop(rax); // pop float thing off
+#endif
+}
+
+void TemplateTable::dop2(Operation op) {
+ transition(dtos, dtos);
+#ifdef _LP64
+ switch (op) {
+ case add:
+ __ addsd(xmm0, at_rsp());
+ __ addptr(rsp, 2 * Interpreter::stackElementSize);
+ break;
+ case sub:
+ __ movdbl(xmm1, xmm0);
+ __ pop_d(xmm0);
+ __ subsd(xmm0, xmm1);
+ break;
+ case mul:
+ __ mulsd(xmm0, at_rsp());
+ __ addptr(rsp, 2 * Interpreter::stackElementSize);
+ break;
+ case div:
+ __ movdbl(xmm1, xmm0);
+ __ pop_d(xmm0);
+ __ divsd(xmm0, xmm1);
+ break;
+ case rem:
+ __ movdbl(xmm1, xmm0);
+ __ pop_d(xmm0);
+ __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::drem), 2);
+ break;
+ default:
+ ShouldNotReachHere();
+ break;
+ }
+#else
+ switch (op) {
+ case add: __ fadd_d (at_rsp()); break;
+ case sub: __ fsubr_d(at_rsp()); break;
+ case mul: {
+ Label L_strict;
+ Label L_join;
+ const Address access_flags (rcx, Method::access_flags_offset());
+ __ get_method(rcx);
+ __ movl(rcx, access_flags);
+ __ testl(rcx, JVM_ACC_STRICT);
+ __ jccb(Assembler::notZero, L_strict);
+ __ fmul_d (at_rsp());
+ __ jmpb(L_join);
+ __ bind(L_strict);
+ __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1()));
+ __ fmulp();
+ __ fmul_d (at_rsp());
+ __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2()));
+ __ fmulp();
+ __ bind(L_join);
+ break;
+ }
+ case div: {
+ Label L_strict;
+ Label L_join;
+ const Address access_flags (rcx, Method::access_flags_offset());
+ __ get_method(rcx);
+ __ movl(rcx, access_flags);
+ __ testl(rcx, JVM_ACC_STRICT);
+ __ jccb(Assembler::notZero, L_strict);
+ __ fdivr_d(at_rsp());
+ __ jmp(L_join);
+ __ bind(L_strict);
+ __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1()));
+ __ fmul_d (at_rsp());
+ __ fdivrp();
+ __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2()));
+ __ fmulp();
+ __ bind(L_join);
+ break;
+ }
+ case rem: __ fld_d (at_rsp()); __ fremr(rax); break;
+ default : ShouldNotReachHere();
+ }
+ __ d2ieee();
+ // Pop double precision number from rsp.
+ __ pop(rax);
+ __ pop(rdx);
+#endif
+}
+
+void TemplateTable::ineg() {
+ transition(itos, itos);
+ __ negl(rax);
+}
+
+void TemplateTable::lneg() {
+ transition(ltos, ltos);
+ LP64_ONLY(__ negq(rax));
+ NOT_LP64(__ lneg(rdx, rax));
+}
+
+#ifdef _LP64
+// Note: 'double' and 'long long' have 32-bits alignment on x86.
+static jlong* double_quadword(jlong *adr, jlong lo, jlong hi) {
+ // Use the expression (adr)&(~0xF) to provide 128-bits aligned address
+ // of 128-bits operands for SSE instructions.
+ jlong *operand = (jlong*)(((intptr_t)adr)&((intptr_t)(~0xF)));
+ // Store the value to a 128-bits operand.
+ operand[0] = lo;
+ operand[1] = hi;
+ return operand;
+}
+
+// Buffer for 128-bits masks used by SSE instructions.
+static jlong float_signflip_pool[2*2];
+static jlong double_signflip_pool[2*2];
+#endif
+
+void TemplateTable::fneg() {
+ transition(ftos, ftos);
+#ifdef _LP64
+ static jlong *float_signflip = double_quadword(&float_signflip_pool[1], 0x8000000080000000, 0x8000000080000000);
+ __ xorps(xmm0, ExternalAddress((address) float_signflip));
+#else
+ __ fchs();
+#endif
+}
+
+void TemplateTable::dneg() {
+ transition(dtos, dtos);
+#ifdef _LP64
+ static jlong *double_signflip = double_quadword(&double_signflip_pool[1], 0x8000000000000000, 0x8000000000000000);
+ __ xorpd(xmm0, ExternalAddress((address) double_signflip));
+#else
+ __ fchs();
+#endif
+}
+
+void TemplateTable::iinc() {
+ transition(vtos, vtos);
+ __ load_signed_byte(rdx, at_bcp(2)); // get constant
+ locals_index(rbx);
+ __ addl(iaddress(rbx), rdx);
+}
+
+void TemplateTable::wide_iinc() {
+ transition(vtos, vtos);
+ __ movl(rdx, at_bcp(4)); // get constant
+ locals_index_wide(rbx);
+ __ bswapl(rdx); // swap bytes & sign-extend constant
+ __ sarl(rdx, 16);
+ __ addl(iaddress(rbx), rdx);
+ // Note: should probably use only one movl to get both
+ // the index and the constant -> fix this
+}
+
+void TemplateTable::convert() {
+#ifdef _LP64
+ // Checking
+#ifdef ASSERT
+ {
+ TosState tos_in = ilgl;
+ TosState tos_out = ilgl;
+ switch (bytecode()) {
+ case Bytecodes::_i2l: // fall through
+ case Bytecodes::_i2f: // fall through
+ case Bytecodes::_i2d: // fall through
+ case Bytecodes::_i2b: // fall through
+ case Bytecodes::_i2c: // fall through
+ case Bytecodes::_i2s: tos_in = itos; break;
+ case Bytecodes::_l2i: // fall through
+ case Bytecodes::_l2f: // fall through
+ case Bytecodes::_l2d: tos_in = ltos; break;
+ case Bytecodes::_f2i: // fall through
+ case Bytecodes::_f2l: // fall through
+ case Bytecodes::_f2d: tos_in = ftos; break;
+ case Bytecodes::_d2i: // fall through
+ case Bytecodes::_d2l: // fall through
+ case Bytecodes::_d2f: tos_in = dtos; break;
+ default : ShouldNotReachHere();
+ }
+ switch (bytecode()) {
+ case Bytecodes::_l2i: // fall through
+ case Bytecodes::_f2i: // fall through
+ case Bytecodes::_d2i: // fall through
+ case Bytecodes::_i2b: // fall through
+ case Bytecodes::_i2c: // fall through
+ case Bytecodes::_i2s: tos_out = itos; break;
+ case Bytecodes::_i2l: // fall through
+ case Bytecodes::_f2l: // fall through
+ case Bytecodes::_d2l: tos_out = ltos; break;
+ case Bytecodes::_i2f: // fall through
+ case Bytecodes::_l2f: // fall through
+ case Bytecodes::_d2f: tos_out = ftos; break;
+ case Bytecodes::_i2d: // fall through
+ case Bytecodes::_l2d: // fall through
+ case Bytecodes::_f2d: tos_out = dtos; break;
+ default : ShouldNotReachHere();
+ }
+ transition(tos_in, tos_out);
+ }
+#endif // ASSERT
+
+ static const int64_t is_nan = 0x8000000000000000L;
+
+ // Conversion
+ switch (bytecode()) {
+ case Bytecodes::_i2l:
+ __ movslq(rax, rax);
+ break;
+ case Bytecodes::_i2f:
+ __ cvtsi2ssl(xmm0, rax);
+ break;
+ case Bytecodes::_i2d:
+ __ cvtsi2sdl(xmm0, rax);
+ break;
+ case Bytecodes::_i2b:
+ __ movsbl(rax, rax);
+ break;
+ case Bytecodes::_i2c:
+ __ movzwl(rax, rax);
+ break;
+ case Bytecodes::_i2s:
+ __ movswl(rax, rax);
+ break;
+ case Bytecodes::_l2i:
+ __ movl(rax, rax);
+ break;
+ case Bytecodes::_l2f:
+ __ cvtsi2ssq(xmm0, rax);
+ break;
+ case Bytecodes::_l2d:
+ __ cvtsi2sdq(xmm0, rax);
+ break;
+ case Bytecodes::_f2i:
+ {
+ Label L;
+ __ cvttss2sil(rax, xmm0);
+ __ cmpl(rax, 0x80000000); // NaN or overflow/underflow?
+ __ jcc(Assembler::notEqual, L);
+ __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2i), 1);
+ __ bind(L);
+ }
+ break;
+ case Bytecodes::_f2l:
+ {
+ Label L;
+ __ cvttss2siq(rax, xmm0);
+ // NaN or overflow/underflow?
+ __ cmp64(rax, ExternalAddress((address) &is_nan));
+ __ jcc(Assembler::notEqual, L);
+ __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2l), 1);
+ __ bind(L);
+ }
+ break;
+ case Bytecodes::_f2d:
+ __ cvtss2sd(xmm0, xmm0);
+ break;
+ case Bytecodes::_d2i:
+ {
+ Label L;
+ __ cvttsd2sil(rax, xmm0);
+ __ cmpl(rax, 0x80000000); // NaN or overflow/underflow?
+ __ jcc(Assembler::notEqual, L);
+ __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2i), 1);
+ __ bind(L);
+ }
+ break;
+ case Bytecodes::_d2l:
+ {
+ Label L;
+ __ cvttsd2siq(rax, xmm0);
+ // NaN or overflow/underflow?
+ __ cmp64(rax, ExternalAddress((address) &is_nan));
+ __ jcc(Assembler::notEqual, L);
+ __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2l), 1);
+ __ bind(L);
+ }
+ break;
+ case Bytecodes::_d2f:
+ __ cvtsd2ss(xmm0, xmm0);
+ break;
+ default:
+ ShouldNotReachHere();
+ }
+#else
+ // Checking
+#ifdef ASSERT
+ { TosState tos_in = ilgl;
+ TosState tos_out = ilgl;
+ switch (bytecode()) {
+ case Bytecodes::_i2l: // fall through
+ case Bytecodes::_i2f: // fall through
+ case Bytecodes::_i2d: // fall through
+ case Bytecodes::_i2b: // fall through
+ case Bytecodes::_i2c: // fall through
+ case Bytecodes::_i2s: tos_in = itos; break;
+ case Bytecodes::_l2i: // fall through
+ case Bytecodes::_l2f: // fall through
+ case Bytecodes::_l2d: tos_in = ltos; break;
+ case Bytecodes::_f2i: // fall through
+ case Bytecodes::_f2l: // fall through
+ case Bytecodes::_f2d: tos_in = ftos; break;
+ case Bytecodes::_d2i: // fall through
+ case Bytecodes::_d2l: // fall through
+ case Bytecodes::_d2f: tos_in = dtos; break;
+ default : ShouldNotReachHere();
+ }
+ switch (bytecode()) {
+ case Bytecodes::_l2i: // fall through
+ case Bytecodes::_f2i: // fall through
+ case Bytecodes::_d2i: // fall through
+ case Bytecodes::_i2b: // fall through
+ case Bytecodes::_i2c: // fall through
+ case Bytecodes::_i2s: tos_out = itos; break;
+ case Bytecodes::_i2l: // fall through
+ case Bytecodes::_f2l: // fall through
+ case Bytecodes::_d2l: tos_out = ltos; break;
+ case Bytecodes::_i2f: // fall through
+ case Bytecodes::_l2f: // fall through
+ case Bytecodes::_d2f: tos_out = ftos; break;
+ case Bytecodes::_i2d: // fall through
+ case Bytecodes::_l2d: // fall through
+ case Bytecodes::_f2d: tos_out = dtos; break;
+ default : ShouldNotReachHere();
+ }
+ transition(tos_in, tos_out);
+ }
+#endif // ASSERT
+
+ // Conversion
+ // (Note: use push(rcx)/pop(rcx) for 1/2-word stack-ptr manipulation)
+ switch (bytecode()) {
+ case Bytecodes::_i2l:
+ __ extend_sign(rdx, rax);
+ break;
+ case Bytecodes::_i2f:
+ __ push(rax); // store int on tos
+ __ fild_s(at_rsp()); // load int to ST0
+ __ f2ieee(); // truncate to float size
+ __ pop(rcx); // adjust rsp
+ break;
+ case Bytecodes::_i2d:
+ __ push(rax); // add one slot for d2ieee()
+ __ push(rax); // store int on tos
+ __ fild_s(at_rsp()); // load int to ST0
+ __ d2ieee(); // truncate to double size
+ __ pop(rcx); // adjust rsp
+ __ pop(rcx);
+ break;
+ case Bytecodes::_i2b:
+ __ shll(rax, 24); // truncate upper 24 bits
+ __ sarl(rax, 24); // and sign-extend byte
+ LP64_ONLY(__ movsbl(rax, rax));
+ break;
+ case Bytecodes::_i2c:
+ __ andl(rax, 0xFFFF); // truncate upper 16 bits
+ LP64_ONLY(__ movzwl(rax, rax));
+ break;
+ case Bytecodes::_i2s:
+ __ shll(rax, 16); // truncate upper 16 bits
+ __ sarl(rax, 16); // and sign-extend short
+ LP64_ONLY(__ movswl(rax, rax));
+ break;
+ case Bytecodes::_l2i:
+ /* nothing to do */
+ break;
+ case Bytecodes::_l2f:
+ __ push(rdx); // store long on tos
+ __ push(rax);
+ __ fild_d(at_rsp()); // load long to ST0
+ __ f2ieee(); // truncate to float size
+ __ pop(rcx); // adjust rsp
+ __ pop(rcx);
+ break;
+ case Bytecodes::_l2d:
+ __ push(rdx); // store long on tos
+ __ push(rax);
+ __ fild_d(at_rsp()); // load long to ST0
+ __ d2ieee(); // truncate to double size
+ __ pop(rcx); // adjust rsp
+ __ pop(rcx);
+ break;
+ case Bytecodes::_f2i:
+ __ push(rcx); // reserve space for argument
+ __ fstp_s(at_rsp()); // pass float argument on stack
+ __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2i), 1);
+ break;
+ case Bytecodes::_f2l:
+ __ push(rcx); // reserve space for argument
+ __ fstp_s(at_rsp()); // pass float argument on stack
+ __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2l), 1);
+ break;
+ case Bytecodes::_f2d:
+ /* nothing to do */
+ break;
+ case Bytecodes::_d2i:
+ __ push(rcx); // reserve space for argument
+ __ push(rcx);
+ __ fstp_d(at_rsp()); // pass double argument on stack
+ __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2i), 2);
+ break;
+ case Bytecodes::_d2l:
+ __ push(rcx); // reserve space for argument
+ __ push(rcx);
+ __ fstp_d(at_rsp()); // pass double argument on stack
+ __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2l), 2);
+ break;
+ case Bytecodes::_d2f:
+ __ push(rcx); // reserve space for f2ieee()
+ __ f2ieee(); // truncate to float size
+ __ pop(rcx); // adjust rsp
+ break;
+ default :
+ ShouldNotReachHere();
+ }
+#endif
+}
+
+void TemplateTable::lcmp() {
+ transition(ltos, itos);
+#ifdef _LP64
+ Label done;
+ __ pop_l(rdx);
+ __ cmpq(rdx, rax);
+ __ movl(rax, -1);
+ __ jccb(Assembler::less, done);
+ __ setb(Assembler::notEqual, rax);
+ __ movzbl(rax, rax);
+ __ bind(done);
+#else
+
+ // y = rdx:rax
+ __ pop_l(rbx, rcx); // get x = rcx:rbx
+ __ lcmp2int(rcx, rbx, rdx, rax);// rcx := cmp(x, y)
+ __ mov(rax, rcx);
+#endif
+}
+
+void TemplateTable::float_cmp(bool is_float, int unordered_result) {
+#ifdef _LP64
+ Label done;
+ if (is_float) {
+ // XXX get rid of pop here, use ... reg, mem32
+ __ pop_f(xmm1);
+ __ ucomiss(xmm1, xmm0);
+ } else {
+ // XXX get rid of pop here, use ... reg, mem64
+ __ pop_d(xmm1);
+ __ ucomisd(xmm1, xmm0);
+ }
+ if (unordered_result < 0) {
+ __ movl(rax, -1);
+ __ jccb(Assembler::parity, done);
+ __ jccb(Assembler::below, done);
+ __ setb(Assembler::notEqual, rdx);
+ __ movzbl(rax, rdx);
+ } else {
+ __ movl(rax, 1);
+ __ jccb(Assembler::parity, done);
+ __ jccb(Assembler::above, done);
+ __ movl(rax, 0);
+ __ jccb(Assembler::equal, done);
+ __ decrementl(rax);
+ }
+ __ bind(done);
+#else
+ if (is_float) {
+ __ fld_s(at_rsp());
+ } else {
+ __ fld_d(at_rsp());
+ __ pop(rdx);
+ }
+ __ pop(rcx);
+ __ fcmp2int(rax, unordered_result < 0);
+#endif
+}
+
+void TemplateTable::branch(bool is_jsr, bool is_wide) {
+ __ get_method(rcx); // rcx holds method
+ __ profile_taken_branch(rax, rbx); // rax holds updated MDP, rbx
+ // holds bumped taken count
+
+ const ByteSize be_offset = MethodCounters::backedge_counter_offset() +
+ InvocationCounter::counter_offset();
+ const ByteSize inv_offset = MethodCounters::invocation_counter_offset() +
+ InvocationCounter::counter_offset();
+
+ // Load up edx with the branch displacement
+ if (is_wide) {
+ __ movl(rdx, at_bcp(1));
+ } else {
+ __ load_signed_short(rdx, at_bcp(1));
+ }
+ __ bswapl(rdx);
+
+ if (!is_wide) {
+ __ sarl(rdx, 16);
+ }
+ LP64_ONLY(__ movl2ptr(rdx, rdx));
+
+ // Handle all the JSR stuff here, then exit.
+ // It's much shorter and cleaner than intermingling with the non-JSR
+ // normal-branch stuff occurring below.
+ if (is_jsr) {
+ // Pre-load the next target bytecode into rbx
+ __ load_unsigned_byte(rbx, Address(rbcp, rdx, Address::times_1, 0));
+
+ // compute return address as bci in rax
+ __ lea(rax, at_bcp((is_wide ? 5 : 3) -
+ in_bytes(ConstMethod::codes_offset())));
+ __ subptr(rax, Address(rcx, Method::const_offset()));
+ // Adjust the bcp in r13 by the displacement in rdx
+ __ addptr(rbcp, rdx);
+ // jsr returns atos that is not an oop
+ __ push_i(rax);
+ __ dispatch_only(vtos);
+ return;
+ }
+
+ // Normal (non-jsr) branch handling
+
+ // Adjust the bcp in r13 by the displacement in rdx
+ __ addptr(rbcp, rdx);
+
+ assert(UseLoopCounter || !UseOnStackReplacement,
+ "on-stack-replacement requires loop counters");
+ Label backedge_counter_overflow;
+ Label profile_method;
+ Label dispatch;
+ if (UseLoopCounter) {
+ // increment backedge counter for backward branches
+ // rax: MDO
+ // rbx: MDO bumped taken-count
+ // rcx: method
+ // rdx: target offset
+ // r13: target bcp
+ // r14: locals pointer
+ __ testl(rdx, rdx); // check if forward or backward branch
+ __ jcc(Assembler::positive, dispatch); // count only if backward branch
+
+ // check if MethodCounters exists
+ Label has_counters;
+ __ movptr(rax, Address(rcx, Method::method_counters_offset()));
+ __ testptr(rax, rax);
+ __ jcc(Assembler::notZero, has_counters);
+ __ push(rdx);
+ __ push(rcx);
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::build_method_counters),
+ rcx);
+ __ pop(rcx);
+ __ pop(rdx);
+ __ movptr(rax, Address(rcx, Method::method_counters_offset()));
+ __ jcc(Assembler::zero, dispatch);
+ __ bind(has_counters);
+
+ if (TieredCompilation) {
+ Label no_mdo;
+ int increment = InvocationCounter::count_increment;
+ if (ProfileInterpreter) {
+ // Are we profiling?
+ __ movptr(rbx, Address(rcx, in_bytes(Method::method_data_offset())));
+ __ testptr(rbx, rbx);
+ __ jccb(Assembler::zero, no_mdo);
+ // Increment the MDO backedge counter
+ const Address mdo_backedge_counter(rbx, in_bytes(MethodData::backedge_counter_offset()) +
+ in_bytes(InvocationCounter::counter_offset()));
+ const Address mask(rbx, in_bytes(MethodData::backedge_mask_offset()));
+ __ increment_mask_and_jump(mdo_backedge_counter, increment, mask,
+ rax, false, Assembler::zero, &backedge_counter_overflow);
+ __ jmp(dispatch);
+ }
+ __ bind(no_mdo);
+ // Increment backedge counter in MethodCounters*
+ __ movptr(rcx, Address(rcx, Method::method_counters_offset()));
+ const Address mask(rcx, in_bytes(MethodCounters::backedge_mask_offset()));
+ __ increment_mask_and_jump(Address(rcx, be_offset), increment, mask,
+ rax, false, Assembler::zero, &backedge_counter_overflow);
+ } else { // not TieredCompilation
+ // increment counter
+ __ movptr(rcx, Address(rcx, Method::method_counters_offset()));
+ __ movl(rax, Address(rcx, be_offset)); // load backedge counter
+ __ incrementl(rax, InvocationCounter::count_increment); // increment counter
+ __ movl(Address(rcx, be_offset), rax); // store counter
+
+ __ movl(rax, Address(rcx, inv_offset)); // load invocation counter
+
+ __ andl(rax, InvocationCounter::count_mask_value); // and the status bits
+ __ addl(rax, Address(rcx, be_offset)); // add both counters
+
+ if (ProfileInterpreter) {
+ // Test to see if we should create a method data oop
+ __ cmp32(rax, Address(rcx, in_bytes(MethodCounters::interpreter_profile_limit_offset())));
+ __ jcc(Assembler::less, dispatch);
+
+ // if no method data exists, go to profile method
+ __ test_method_data_pointer(rax, profile_method);
+
+ if (UseOnStackReplacement) {
+ // check for overflow against rbx which is the MDO taken count
+ __ cmp32(rbx, Address(rcx, in_bytes(MethodCounters::interpreter_backward_branch_limit_offset())));
+ __ jcc(Assembler::below, dispatch);
+
+ // When ProfileInterpreter is on, the backedge_count comes
+ // from the MethodData*, which value does not get reset on
+ // the call to frequency_counter_overflow(). To avoid
+ // excessive calls to the overflow routine while the method is
+ // being compiled, add a second test to make sure the overflow
+ // function is called only once every overflow_frequency.
+ const int overflow_frequency = 1024;
+ __ andl(rbx, overflow_frequency - 1);
+ __ jcc(Assembler::zero, backedge_counter_overflow);
+
+ }
+ } else {
+ if (UseOnStackReplacement) {
+ // check for overflow against rax, which is the sum of the
+ // counters
+ __ cmp32(rax, Address(rcx, in_bytes(MethodCounters::interpreter_backward_branch_limit_offset())));
+ __ jcc(Assembler::aboveEqual, backedge_counter_overflow);
+
+ }
+ }
+ }
+ __ bind(dispatch);
+ }
+
+ // Pre-load the next target bytecode into rbx
+ __ load_unsigned_byte(rbx, Address(rbcp, 0));
+
+ // continue with the bytecode @ target
+ // rax: return bci for jsr's, unused otherwise
+ // rbx: target bytecode
+ // r13: target bcp
+ __ dispatch_only(vtos);
+
+ if (UseLoopCounter) {
+ if (ProfileInterpreter) {
+ // Out-of-line code to allocate method data oop.
+ __ bind(profile_method);
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method));
+ __ load_unsigned_byte(rbx, Address(rbcp, 0)); // restore target bytecode
+ __ set_method_data_pointer_for_bcp();
+ __ jmp(dispatch);
+ }
+
+ if (UseOnStackReplacement) {
+ // invocation counter overflow
+ __ bind(backedge_counter_overflow);
+ __ negptr(rdx);
+ __ addptr(rdx, rbcp); // branch bcp
+ // IcoResult frequency_counter_overflow([JavaThread*], address branch_bcp)
+ __ call_VM(noreg,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::frequency_counter_overflow),
+ rdx);
+ __ load_unsigned_byte(rbx, Address(rbcp, 0)); // restore target bytecode
+
+ // rax: osr nmethod (osr ok) or NULL (osr not possible)
+ // rbx: target bytecode
+ // rdx: scratch
+ // r14: locals pointer
+ // r13: bcp
+ __ testptr(rax, rax); // test result
+ __ jcc(Assembler::zero, dispatch); // no osr if null
+ // nmethod may have been invalidated (VM may block upon call_VM return)
+ __ cmpb(Address(rax, nmethod::state_offset()), nmethod::in_use);
+ __ jcc(Assembler::notEqual, dispatch);
+
+ // We have the address of an on stack replacement routine in rax
+ // We need to prepare to execute the OSR method. First we must
+ // migrate the locals and monitors off of the stack.
+
+ LP64_ONLY(__ mov(r13, rax)); // save the nmethod
+ NOT_LP64(__ mov(rbx, rax)); // save the nmethod
+ NOT_LP64(__ get_thread(rcx));
+
+ call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin));
+
+ // rax is OSR buffer, move it to expected parameter location
+ LP64_ONLY(__ mov(j_rarg0, rax));
+ NOT_LP64(__ mov(rcx, rax));
+ // We use j_rarg definitions here so that registers don't conflict as parameter
+ // registers change across platforms as we are in the midst of a calling
+ // sequence to the OSR nmethod and we don't want collision. These are NOT parameters.
+
+ const Register retaddr = LP64_ONLY(j_rarg2) NOT_LP64(rdi);
+ const Register sender_sp = LP64_ONLY(j_rarg1) NOT_LP64(rdx);
+
+
+ // pop the interpreter frame
+ __ movptr(sender_sp, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp
+ __ leave(); // remove frame anchor
+ __ pop(retaddr); // get return address
+ __ mov(rsp, sender_sp); // set sp to sender sp
+ // Ensure compiled code always sees stack at proper alignment
+ __ andptr(rsp, -(StackAlignmentInBytes));
+
+ // unlike x86 we need no specialized return from compiled code
+ // to the interpreter or the call stub.
+
+ // push the return address
+ __ push(retaddr);
+
+ // and begin the OSR nmethod
+ LP64_ONLY(__ jmp(Address(r13, nmethod::osr_entry_point_offset())));
+ NOT_LP64(__ jmp(Address(rbx, nmethod::osr_entry_point_offset())));
+ }
+ }
+}
+
+void TemplateTable::if_0cmp(Condition cc) {
+ transition(itos, vtos);
+ // assume branch is more often taken than not (loops use backward branches)
+ Label not_taken;
+ __ testl(rax, rax);
+ __ jcc(j_not(cc), not_taken);
+ branch(false, false);
+ __ bind(not_taken);
+ __ profile_not_taken_branch(rax);
+}
+
+void TemplateTable::if_icmp(Condition cc) {
+ transition(itos, vtos);
+ // assume branch is more often taken than not (loops use backward branches)
+ Label not_taken;
+ __ pop_i(rdx);
+ __ cmpl(rdx, rax);
+ __ jcc(j_not(cc), not_taken);
+ branch(false, false);
+ __ bind(not_taken);
+ __ profile_not_taken_branch(rax);
+}
+
+void TemplateTable::if_nullcmp(Condition cc) {
+ transition(atos, vtos);
+ // assume branch is more often taken than not (loops use backward branches)
+ Label not_taken;
+ __ testptr(rax, rax);
+ __ jcc(j_not(cc), not_taken);
+ branch(false, false);
+ __ bind(not_taken);
+ __ profile_not_taken_branch(rax);
+}
+
+void TemplateTable::if_acmp(Condition cc) {
+ transition(atos, vtos);
+ // assume branch is more often taken than not (loops use backward branches)
+ Label not_taken;
+ __ pop_ptr(rdx);
+ __ cmpptr(rdx, rax);
+ __ jcc(j_not(cc), not_taken);
+ branch(false, false);
+ __ bind(not_taken);
+ __ profile_not_taken_branch(rax);
+}
+
+void TemplateTable::ret() {
+ transition(vtos, vtos);
+ locals_index(rbx);
+ LP64_ONLY(__ movslq(rbx, iaddress(rbx))); // get return bci, compute return bcp
+ NOT_LP64(__ movptr(rbx, iaddress(rbx)));
+ __ profile_ret(rbx, rcx);
+ __ get_method(rax);
+ __ movptr(rbcp, Address(rax, Method::const_offset()));
+ __ lea(rbcp, Address(rbcp, rbx, Address::times_1,
+ ConstMethod::codes_offset()));
+ __ dispatch_next(vtos);
+}
+
+void TemplateTable::wide_ret() {
+ transition(vtos, vtos);
+ locals_index_wide(rbx);
+ __ movptr(rbx, aaddress(rbx)); // get return bci, compute return bcp
+ __ profile_ret(rbx, rcx);
+ __ get_method(rax);
+ __ movptr(rbcp, Address(rax, Method::const_offset()));
+ __ lea(rbcp, Address(rbcp, rbx, Address::times_1, ConstMethod::codes_offset()));
+ __ dispatch_next(vtos);
+}
+
+void TemplateTable::tableswitch() {
+ Label default_case, continue_execution;
+ transition(itos, vtos);
+
+ // align r13/rsi
+ __ lea(rbx, at_bcp(BytesPerInt));
+ __ andptr(rbx, -BytesPerInt);
+ // load lo & hi
+ __ movl(rcx, Address(rbx, BytesPerInt));
+ __ movl(rdx, Address(rbx, 2 * BytesPerInt));
+ __ bswapl(rcx);
+ __ bswapl(rdx);
+ // check against lo & hi
+ __ cmpl(rax, rcx);
+ __ jcc(Assembler::less, default_case);
+ __ cmpl(rax, rdx);
+ __ jcc(Assembler::greater, default_case);
+ // lookup dispatch offset
+ __ subl(rax, rcx);
+ __ movl(rdx, Address(rbx, rax, Address::times_4, 3 * BytesPerInt));
+ __ profile_switch_case(rax, rbx, rcx);
+ // continue execution
+ __ bind(continue_execution);
+ __ bswapl(rdx);
+ LP64_ONLY(__ movl2ptr(rdx, rdx));
+ __ load_unsigned_byte(rbx, Address(rbcp, rdx, Address::times_1));
+ __ addptr(rbcp, rdx);
+ __ dispatch_only(vtos);
+ // handle default
+ __ bind(default_case);
+ __ profile_switch_default(rax);
+ __ movl(rdx, Address(rbx, 0));
+ __ jmp(continue_execution);
+}
+
+void TemplateTable::lookupswitch() {
+ transition(itos, itos);
+ __ stop("lookupswitch bytecode should have been rewritten");
+}
+
+void TemplateTable::fast_linearswitch() {
+ transition(itos, vtos);
+ Label loop_entry, loop, found, continue_execution;
+ // bswap rax so we can avoid bswapping the table entries
+ __ bswapl(rax);
+ // align r13
+ __ lea(rbx, at_bcp(BytesPerInt)); // btw: should be able to get rid of
+ // this instruction (change offsets
+ // below)
+ __ andptr(rbx, -BytesPerInt);
+ // set counter
+ __ movl(rcx, Address(rbx, BytesPerInt));
+ __ bswapl(rcx);
+ __ jmpb(loop_entry);
+ // table search
+ __ bind(loop);
+ __ cmpl(rax, Address(rbx, rcx, Address::times_8, 2 * BytesPerInt));
+ __ jcc(Assembler::equal, found);
+ __ bind(loop_entry);
+ __ decrementl(rcx);
+ __ jcc(Assembler::greaterEqual, loop);
+ // default case
+ __ profile_switch_default(rax);
+ __ movl(rdx, Address(rbx, 0));
+ __ jmp(continue_execution);
+ // entry found -> get offset
+ __ bind(found);
+ __ movl(rdx, Address(rbx, rcx, Address::times_8, 3 * BytesPerInt));
+ __ profile_switch_case(rcx, rax, rbx);
+ // continue execution
+ __ bind(continue_execution);
+ __ bswapl(rdx);
+ __ movl2ptr(rdx, rdx);
+ __ load_unsigned_byte(rbx, Address(rbcp, rdx, Address::times_1));
+ __ addptr(rbcp, rdx);
+ __ dispatch_only(vtos);
+}
+
+void TemplateTable::fast_binaryswitch() {
+ transition(itos, vtos);
+ // Implementation using the following core algorithm:
+ //
+ // int binary_search(int key, LookupswitchPair* array, int n) {
+ // // Binary search according to "Methodik des Programmierens" by
+ // // Edsger W. Dijkstra and W.H.J. Feijen, Addison Wesley Germany 1985.
+ // int i = 0;
+ // int j = n;
+ // while (i+1 < j) {
+ // // invariant P: 0 <= i < j <= n and (a[i] <= key < a[j] or Q)
+ // // with Q: for all i: 0 <= i < n: key < a[i]
+ // // where a stands for the array and assuming that the (inexisting)
+ // // element a[n] is infinitely big.
+ // int h = (i + j) >> 1;
+ // // i < h < j
+ // if (key < array[h].fast_match()) {
+ // j = h;
+ // } else {
+ // i = h;
+ // }
+ // }
+ // // R: a[i] <= key < a[i+1] or Q
+ // // (i.e., if key is within array, i is the correct index)
+ // return i;
+ // }
+
+ // Register allocation
+ const Register key = rax; // already set (tosca)
+ const Register array = rbx;
+ const Register i = rcx;
+ const Register j = rdx;
+ const Register h = rdi;
+ const Register temp = rsi;
+
+ // Find array start
+ NOT_LP64(__ save_bcp());
+
+ __ lea(array, at_bcp(3 * BytesPerInt)); // btw: should be able to
+ // get rid of this
+ // instruction (change
+ // offsets below)
+ __ andptr(array, -BytesPerInt);
+
+ // Initialize i & j
+ __ xorl(i, i); // i = 0;
+ __ movl(j, Address(array, -BytesPerInt)); // j = length(array);
+
+ // Convert j into native byteordering
+ __ bswapl(j);
+
+ // And start
+ Label entry;
+ __ jmp(entry);
+
+ // binary search loop
+ {
+ Label loop;
+ __ bind(loop);
+ // int h = (i + j) >> 1;
+ __ leal(h, Address(i, j, Address::times_1)); // h = i + j;
+ __ sarl(h, 1); // h = (i + j) >> 1;
+ // if (key < array[h].fast_match()) {
+ // j = h;
+ // } else {
+ // i = h;
+ // }
+ // Convert array[h].match to native byte-ordering before compare
+ __ movl(temp, Address(array, h, Address::times_8));
+ __ bswapl(temp);
+ __ cmpl(key, temp);
+ // j = h if (key < array[h].fast_match())
+ __ cmov32(Assembler::less, j, h);
+ // i = h if (key >= array[h].fast_match())
+ __ cmov32(Assembler::greaterEqual, i, h);
+ // while (i+1 < j)
+ __ bind(entry);
+ __ leal(h, Address(i, 1)); // i+1
+ __ cmpl(h, j); // i+1 < j
+ __ jcc(Assembler::less, loop);
+ }
+
+ // end of binary search, result index is i (must check again!)
+ Label default_case;
+ // Convert array[i].match to native byte-ordering before compare
+ __ movl(temp, Address(array, i, Address::times_8));
+ __ bswapl(temp);
+ __ cmpl(key, temp);
+ __ jcc(Assembler::notEqual, default_case);
+
+ // entry found -> j = offset
+ __ movl(j , Address(array, i, Address::times_8, BytesPerInt));
+ __ profile_switch_case(i, key, array);
+ __ bswapl(j);
+ LP64_ONLY(__ movslq(j, j));
+
+ NOT_LP64(__ restore_bcp());
+ NOT_LP64(__ restore_locals()); // restore rdi
+
+ __ load_unsigned_byte(rbx, Address(rbcp, j, Address::times_1));
+ __ addptr(rbcp, j);
+ __ dispatch_only(vtos);
+
+ // default case -> j = default offset
+ __ bind(default_case);
+ __ profile_switch_default(i);
+ __ movl(j, Address(array, -2 * BytesPerInt));
+ __ bswapl(j);
+ LP64_ONLY(__ movslq(j, j));
+
+ NOT_LP64(__ restore_bcp());
+ NOT_LP64(__ restore_locals());
+
+ __ load_unsigned_byte(rbx, Address(rbcp, j, Address::times_1));
+ __ addptr(rbcp, j);
+ __ dispatch_only(vtos);
+}
+
+void TemplateTable::_return(TosState state) {
+ transition(state, state);
+
+ Register robj = LP64_ONLY(c_rarg1) NOT_LP64(rax);
+
+ assert(_desc->calls_vm(),
+ "inconsistent calls_vm information"); // call in remove_activation
+
+ if (_desc->bytecode() == Bytecodes::_return_register_finalizer) {
+ assert(state == vtos, "only valid state");
+ __ movptr(robj, aaddress(0));
+ __ load_klass(rdi, robj);
+ __ movl(rdi, Address(rdi, Klass::access_flags_offset()));
+ __ testl(rdi, JVM_ACC_HAS_FINALIZER);
+ Label skip_register_finalizer;
+ __ jcc(Assembler::zero, skip_register_finalizer);
+
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), robj);
+
+ __ bind(skip_register_finalizer);
+ }
+
+ __ remove_activation(state, rbcp);
+ __ jmp(rbcp);
+}
+
+// ----------------------------------------------------------------------------
+// Volatile variables demand their effects be made known to all CPU's
+// in order. Store buffers on most chips allow reads & writes to
+// reorder; the JMM's ReadAfterWrite.java test fails in -Xint mode
+// without some kind of memory barrier (i.e., it's not sufficient that
+// the interpreter does not reorder volatile references, the hardware
+// also must not reorder them).
+//
+// According to the new Java Memory Model (JMM):
+// (1) All volatiles are serialized wrt to each other. ALSO reads &
+// writes act as aquire & release, so:
+// (2) A read cannot let unrelated NON-volatile memory refs that
+// happen after the read float up to before the read. It's OK for
+// non-volatile memory refs that happen before the volatile read to
+// float down below it.
+// (3) Similar a volatile write cannot let unrelated NON-volatile
+// memory refs that happen BEFORE the write float down to after the
+// write. It's OK for non-volatile memory refs that happen after the
+// volatile write to float up before it.
+//
+// We only put in barriers around volatile refs (they are expensive),
+// not _between_ memory refs (that would require us to track the
+// flavor of the previous memory refs). Requirements (2) and (3)
+// require some barriers before volatile stores and after volatile
+// loads. These nearly cover requirement (1) but miss the
+// volatile-store-volatile-load case. This final case is placed after
+// volatile-stores although it could just as well go before
+// volatile-loads.
+
+void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits order_constraint ) {
+ // Helper function to insert a is-volatile test and memory barrier
+ if(!os::is_MP()) return; // Not needed on single CPU
+ __ membar(order_constraint);
+}
+
+void TemplateTable::resolve_cache_and_index(int byte_no,
+ Register Rcache,
+ Register index,
+ size_t index_size) {
+ const Register temp = rbx;
+ assert_different_registers(Rcache, index, temp);
+
+ Label resolved;
+ assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range");
+ __ get_cache_and_index_and_bytecode_at_bcp(Rcache, index, temp, byte_no, 1, index_size);
+ __ cmpl(temp, (int) bytecode()); // have we resolved this bytecode?
+ __ jcc(Assembler::equal, resolved);
+
+ // resolve first time through
+ address entry;
+ switch (bytecode()) {
+ case Bytecodes::_getstatic : // fall through
+ case Bytecodes::_putstatic : // fall through
+ case Bytecodes::_getfield : // fall through
+ case Bytecodes::_putfield : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_get_put); break;
+ case Bytecodes::_invokevirtual : // fall through
+ case Bytecodes::_invokespecial : // fall through
+ case Bytecodes::_invokestatic : // fall through
+ case Bytecodes::_invokeinterface: entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invoke); break;
+ case Bytecodes::_invokehandle : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokehandle); break;
+ case Bytecodes::_invokedynamic : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokedynamic); break;
+ default:
+ fatal(err_msg("unexpected bytecode: %s", Bytecodes::name(bytecode())));
+ break;
+ }
+ __ movl(temp, (int)bytecode());
+ __ call_VM(noreg, entry, temp);
+ // Update registers with resolved info
+ __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size);
+ __ bind(resolved);
+}
+
+// The cache and index registers must be set before call
+void TemplateTable::load_field_cp_cache_entry(Register obj,
+ Register cache,
+ Register index,
+ Register off,
+ Register flags,
+ bool is_static = false) {
+ assert_different_registers(cache, index, flags, off);
+
+ ByteSize cp_base_offset = ConstantPoolCache::base_offset();
+ // Field offset
+ __ movptr(off, Address(cache, index, Address::times_ptr,
+ in_bytes(cp_base_offset +
+ ConstantPoolCacheEntry::f2_offset())));
+ // Flags
+ __ movl(flags, Address(cache, index, Address::times_ptr,
+ in_bytes(cp_base_offset +
+ ConstantPoolCacheEntry::flags_offset())));
+
+ // klass overwrite register
+ if (is_static) {
+ __ movptr(obj, Address(cache, index, Address::times_ptr,
+ in_bytes(cp_base_offset +
+ ConstantPoolCacheEntry::f1_offset())));
+ const int mirror_offset = in_bytes(Klass::java_mirror_offset());
+ __ movptr(obj, Address(obj, mirror_offset));
+ }
+}
+
+void TemplateTable::load_invoke_cp_cache_entry(int byte_no,
+ Register method,
+ Register itable_index,
+ Register flags,
+ bool is_invokevirtual,
+ bool is_invokevfinal, /*unused*/
+ bool is_invokedynamic) {
+ // setup registers
+ const Register cache = rcx;
+ const Register index = rdx;
+ assert_different_registers(method, flags);
+ assert_different_registers(method, cache, index);
+ assert_different_registers(itable_index, flags);
+ assert_different_registers(itable_index, cache, index);
+ // determine constant pool cache field offsets
+ assert(is_invokevirtual == (byte_no == f2_byte), "is_invokevirtual flag redundant");
+ const int method_offset = in_bytes(
+ ConstantPoolCache::base_offset() +
+ ((byte_no == f2_byte)
+ ? ConstantPoolCacheEntry::f2_offset()
+ : ConstantPoolCacheEntry::f1_offset()));
+ const int flags_offset = in_bytes(ConstantPoolCache::base_offset() +
+ ConstantPoolCacheEntry::flags_offset());
+ // access constant pool cache fields
+ const int index_offset = in_bytes(ConstantPoolCache::base_offset() +
+ ConstantPoolCacheEntry::f2_offset());
+
+ size_t index_size = (is_invokedynamic ? sizeof(u4) : sizeof(u2));
+ resolve_cache_and_index(byte_no, cache, index, index_size);
+ __ movptr(method, Address(cache, index, Address::times_ptr, method_offset));
+
+ if (itable_index != noreg) {
+ // pick up itable or appendix index from f2 also:
+ __ movptr(itable_index, Address(cache, index, Address::times_ptr, index_offset));
+ }
+ __ movl(flags, Address(cache, index, Address::times_ptr, flags_offset));
+}
+
+// The registers cache and index expected to be set before call.
+// Correct values of the cache and index registers are preserved.
+void TemplateTable::jvmti_post_field_access(Register cache,
+ Register index,
+ bool is_static,
+ bool has_tos) {
+ if (JvmtiExport::can_post_field_access()) {
+ // Check to see if a field access watch has been set before we take
+ // the time to call into the VM.
+ Label L1;
+ assert_different_registers(cache, index, rax);
+ __ mov32(rax, ExternalAddress((address) JvmtiExport::get_field_access_count_addr()));
+ __ testl(rax,rax);
+ __ jcc(Assembler::zero, L1);
+
+ // cache entry pointer
+ __ addptr(cache, in_bytes(ConstantPoolCache::base_offset()));
+ __ shll(index, LogBytesPerWord);
+ __ addptr(cache, index);
+ if (is_static) {
+ __ xorptr(rax, rax); // NULL object reference
+ } else {
+ __ pop(atos); // Get the object
+ __ verify_oop(rax);
+ __ push(atos); // Restore stack state
+ }
+ // rax,: object pointer or NULL
+ // cache: cache entry pointer
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access),
+ rax, cache);
+ __ get_cache_and_index_at_bcp(cache, index, 1);
+ __ bind(L1);
+ }
+}
+
+void TemplateTable::pop_and_check_object(Register r) {
+ __ pop_ptr(r);
+ __ null_check(r); // for field access must check obj.
+ __ verify_oop(r);
+}
+
+void TemplateTable::getfield_or_static(int byte_no, bool is_static) {
+ transition(vtos, vtos);
+
+ const Register cache = rcx;
+ const Register index = rdx;
+ const Register obj = LP64_ONLY(c_rarg3) NOT_LP64(rcx);
+ const Register off = rbx;
+ const Register flags = rax;
+ const Register bc = LP64_ONLY(c_rarg3) NOT_LP64(rcx); // uses same reg as obj, so don't mix them
+
+ resolve_cache_and_index(byte_no, cache, index, sizeof(u2));
+ jvmti_post_field_access(cache, index, is_static, false);
+ load_field_cp_cache_entry(obj, cache, index, off, flags, is_static);
+
+ if (!is_static) pop_and_check_object(obj);
+
+ const Address field(obj, off, Address::times_1, 0*wordSize);
+ NOT_LP64(const Address hi(obj, off, Address::times_1, 1*wordSize));
+
+ Label Done, notByte, notInt, notShort, notChar, notLong, notFloat, notObj, notDouble;
+
+ __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift);
+ // Make sure we don't need to mask edx after the above shift
+ assert(btos == 0, "change code, btos != 0");
+
+ __ andl(flags, ConstantPoolCacheEntry::tos_state_mask);
+
+ __ jcc(Assembler::notZero, notByte);
+ // btos
+ __ load_signed_byte(rax, field);
+ __ push(btos);
+ // Rewrite bytecode to be faster
+ if (!is_static) {
+ patch_bytecode(Bytecodes::_fast_bgetfield, bc, rbx);
+ }
+ __ jmp(Done);
+
+ __ bind(notByte);
+ __ cmpl(flags, atos);
+ __ jcc(Assembler::notEqual, notObj);
+ // atos
+ __ load_heap_oop(rax, field);
+ __ push(atos);
+ if (!is_static) {
+ patch_bytecode(Bytecodes::_fast_agetfield, bc, rbx);
+ }
+ __ jmp(Done);
+
+ __ bind(notObj);
+ __ cmpl(flags, itos);
+ __ jcc(Assembler::notEqual, notInt);
+ // itos
+ __ movl(rax, field);
+ __ push(itos);
+ // Rewrite bytecode to be faster
+ if (!is_static) {
+ patch_bytecode(Bytecodes::_fast_igetfield, bc, rbx);
+ }
+ __ jmp(Done);
+
+ __ bind(notInt);
+ __ cmpl(flags, ctos);
+ __ jcc(Assembler::notEqual, notChar);
+ // ctos
+ __ load_unsigned_short(rax, field);
+ __ push(ctos);
+ // Rewrite bytecode to be faster
+ if (!is_static) {
+ patch_bytecode(Bytecodes::_fast_cgetfield, bc, rbx);
+ }
+ __ jmp(Done);
+
+ __ bind(notChar);
+ __ cmpl(flags, stos);
+ __ jcc(Assembler::notEqual, notShort);
+ // stos
+ __ load_signed_short(rax, field);
+ __ push(stos);
+ // Rewrite bytecode to be faster
+ if (!is_static) {
+ patch_bytecode(Bytecodes::_fast_sgetfield, bc, rbx);
+ }
+ __ jmp(Done);
+
+ __ bind(notShort);
+ __ cmpl(flags, ltos);
+ __ jcc(Assembler::notEqual, notLong);
+ // ltos
+
+#ifndef _LP64
+ // Generate code as if volatile. There just aren't enough registers to
+ // save that information and this code is faster than the test.
+ __ fild_d(field); // Must load atomically
+ __ subptr(rsp,2*wordSize); // Make space for store
+ __ fistp_d(Address(rsp,0));
+ __ pop(rax);
+ __ pop(rdx);
+#else
+ __ movq(rax, field);
+#endif
+
+ __ push(ltos);
+ // Rewrite bytecode to be faster
+ LP64_ONLY(if (!is_static) patch_bytecode(Bytecodes::_fast_lgetfield, bc, rbx));
+ __ jmp(Done);
+
+ __ bind(notLong);
+ __ cmpl(flags, ftos);
+ __ jcc(Assembler::notEqual, notFloat);
+ // ftos
+
+ LP64_ONLY(__ movflt(xmm0, field));
+ NOT_LP64(__ fld_s(field));
+ __ push(ftos);
+ // Rewrite bytecode to be faster
+ if (!is_static) {
+ patch_bytecode(Bytecodes::_fast_fgetfield, bc, rbx);
+ }
+ __ jmp(Done);
+
+ __ bind(notFloat);
+#ifdef ASSERT
+ __ cmpl(flags, dtos);
+ __ jcc(Assembler::notEqual, notDouble);
+#endif
+ // dtos
+ LP64_ONLY(__ movdbl(xmm0, field));
+ NOT_LP64(__ fld_d(field));
+ __ push(dtos);
+ // Rewrite bytecode to be faster
+ if (!is_static) {
+ patch_bytecode(Bytecodes::_fast_dgetfield, bc, rbx);
+ }
+#ifdef ASSERT
+ __ jmp(Done);
+
+
+ __ bind(notDouble);
+ __ stop("Bad state");
+#endif
+
+ __ bind(Done);
+ // [jk] not needed currently
+ // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadLoad |
+ // Assembler::LoadStore));
+}
+
+void TemplateTable::getfield(int byte_no) {
+ getfield_or_static(byte_no, false);
+}
+
+void TemplateTable::getstatic(int byte_no) {
+ getfield_or_static(byte_no, true);
+}
+
+
+// The registers cache and index expected to be set before call.
+// The function may destroy various registers, just not the cache and index registers.
+void TemplateTable::jvmti_post_field_mod(Register cache, Register index, bool is_static) {
+
+ const Register robj = LP64_ONLY(c_rarg2) NOT_LP64(rax);
+ const Register RBX = LP64_ONLY(c_rarg1) NOT_LP64(rbx);
+ const Register RCX = LP64_ONLY(c_rarg3) NOT_LP64(rcx);
+ const Register RDX = LP64_ONLY(rscratch1) NOT_LP64(rdx);
+
+ ByteSize cp_base_offset = ConstantPoolCache::base_offset();
+
+ if (JvmtiExport::can_post_field_modification()) {
+ // Check to see if a field modification watch has been set before
+ // we take the time to call into the VM.
+ Label L1;
+ assert_different_registers(cache, index, rax);
+ __ mov32(rax, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr()));
+ __ testl(rax, rax);
+ __ jcc(Assembler::zero, L1);
+
+ __ get_cache_and_index_at_bcp(robj, RDX, 1);
+
+
+ if (is_static) {
+ // Life is simple. Null out the object pointer.
+ __ xorl(RBX, RBX);
+
+ } else {
+ // Life is harder. The stack holds the value on top, followed by
+ // the object. We don't know the size of the value, though; it
+ // could be one or two words depending on its type. As a result,
+ // we must find the type to determine where the object is.
+#ifndef _LP64
+ Label two_word, valsize_known;
+#endif
+ __ movl(RCX, Address(robj, RDX,
+ Address::times_ptr,
+ in_bytes(cp_base_offset +
+ ConstantPoolCacheEntry::flags_offset())));
+ NOT_LP64(__ mov(rbx, rsp));
+ __ shrl(RCX, ConstantPoolCacheEntry::tos_state_shift);
+
+ // Make sure we don't need to mask rcx after the above shift
+ ConstantPoolCacheEntry::verify_tos_state_shift();
+#ifdef _LP64
+ __ movptr(c_rarg1, at_tos_p1()); // initially assume a one word jvalue
+ __ cmpl(c_rarg3, ltos);
+ __ cmovptr(Assembler::equal,
+ c_rarg1, at_tos_p2()); // ltos (two word jvalue)
+ __ cmpl(c_rarg3, dtos);
+ __ cmovptr(Assembler::equal,
+ c_rarg1, at_tos_p2()); // dtos (two word jvalue)
+#else
+ __ cmpl(rcx, ltos);
+ __ jccb(Assembler::equal, two_word);
+ __ cmpl(rcx, dtos);
+ __ jccb(Assembler::equal, two_word);
+ __ addptr(rbx, Interpreter::expr_offset_in_bytes(1)); // one word jvalue (not ltos, dtos)
+ __ jmpb(valsize_known);
+
+ __ bind(two_word);
+ __ addptr(rbx, Interpreter::expr_offset_in_bytes(2)); // two words jvalue
+
+ __ bind(valsize_known);
+ // setup object pointer
+ __ movptr(rbx, Address(rbx, 0));
+#endif
+ }
+ // cache entry pointer
+ __ addptr(robj, in_bytes(cp_base_offset));
+ __ shll(RDX, LogBytesPerWord);
+ __ addptr(robj, RDX);
+ // object (tos)
+ __ mov(RCX, rsp);
+ // c_rarg1: object pointer set up above (NULL if static)
+ // c_rarg2: cache entry pointer
+ // c_rarg3: jvalue object on the stack
+ __ call_VM(noreg,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::post_field_modification),
+ RBX, robj, RCX);
+ __ get_cache_and_index_at_bcp(cache, index, 1);
+ __ bind(L1);
+ }
+}
+
+void TemplateTable::putfield_or_static(int byte_no, bool is_static) {
+ transition(vtos, vtos);
+
+ const Register cache = rcx;
+ const Register index = rdx;
+ const Register obj = rcx;
+ const Register off = rbx;
+ const Register flags = rax;
+ const Register bc = LP64_ONLY(c_rarg3) NOT_LP64(rcx);
+
+ resolve_cache_and_index(byte_no, cache, index, sizeof(u2));
+ jvmti_post_field_mod(cache, index, is_static);
+ load_field_cp_cache_entry(obj, cache, index, off, flags, is_static);
+
+ // [jk] not needed currently
+ // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadStore |
+ // Assembler::StoreStore));
+
+ Label notVolatile, Done;
+ __ movl(rdx, flags);
+ __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift);
+ __ andl(rdx, 0x1);
+
+ // field addresses
+ const Address field(obj, off, Address::times_1, 0*wordSize);
+ NOT_LP64( const Address hi(obj, off, Address::times_1, 1*wordSize);)
+
+ Label notByte, notInt, notShort, notChar,
+ notLong, notFloat, notObj, notDouble;
+
+ __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift);
+
+ assert(btos == 0, "change code, btos != 0");
+ __ andl(flags, ConstantPoolCacheEntry::tos_state_mask);
+ __ jcc(Assembler::notZero, notByte);
+
+ // btos
+ {
+ __ pop(btos);
+ if (!is_static) pop_and_check_object(obj);
+ __ movb(field, rax);
+ if (!is_static) {
+ patch_bytecode(Bytecodes::_fast_bputfield, bc, rbx, true, byte_no);
+ }
+ __ jmp(Done);
+ }
+
+ __ bind(notByte);
+ __ cmpl(flags, atos);
+ __ jcc(Assembler::notEqual, notObj);
+
+ // atos
+ {
+ __ pop(atos);
+ if (!is_static) pop_and_check_object(obj);
+ // Store into the field
+ do_oop_store(_masm, field, rax, _bs->kind(), false);
+ if (!is_static) {
+ patch_bytecode(Bytecodes::_fast_aputfield, bc, rbx, true, byte_no);
+ }
+ __ jmp(Done);
+ }
+
+ __ bind(notObj);
+ __ cmpl(flags, itos);
+ __ jcc(Assembler::notEqual, notInt);
+
+ // itos
+ {
+ __ pop(itos);
+ if (!is_static) pop_and_check_object(obj);
+ __ movl(field, rax);
+ if (!is_static) {
+ patch_bytecode(Bytecodes::_fast_iputfield, bc, rbx, true, byte_no);
+ }
+ __ jmp(Done);
+ }
+
+ __ bind(notInt);
+ __ cmpl(flags, ctos);
+ __ jcc(Assembler::notEqual, notChar);
+
+ // ctos
+ {
+ __ pop(ctos);
+ if (!is_static) pop_and_check_object(obj);
+ __ movw(field, rax);
+ if (!is_static) {
+ patch_bytecode(Bytecodes::_fast_cputfield, bc, rbx, true, byte_no);
+ }
+ __ jmp(Done);
+ }
+
+ __ bind(notChar);
+ __ cmpl(flags, stos);
+ __ jcc(Assembler::notEqual, notShort);
+
+ // stos
+ {
+ __ pop(stos);
+ if (!is_static) pop_and_check_object(obj);
+ __ movw(field, rax);
+ if (!is_static) {
+ patch_bytecode(Bytecodes::_fast_sputfield, bc, rbx, true, byte_no);
+ }
+ __ jmp(Done);
+ }
+
+ __ bind(notShort);
+ __ cmpl(flags, ltos);
+ __ jcc(Assembler::notEqual, notLong);
+
+ // ltos
+#ifdef _LP64
+ {
+ __ pop(ltos);
+ if (!is_static) pop_and_check_object(obj);
+ __ movq(field, rax);
+ if (!is_static) {
+ patch_bytecode(Bytecodes::_fast_lputfield, bc, rbx, true, byte_no);
+ }
+ __ jmp(Done);
+ }
+#else
+ {
+ Label notVolatileLong;
+ __ testl(rdx, rdx);
+ __ jcc(Assembler::zero, notVolatileLong);
+
+ __ pop(ltos); // overwrites rdx, do this after testing volatile.
+ if (!is_static) pop_and_check_object(obj);
+
+ // Replace with real volatile test
+ __ push(rdx);
+ __ push(rax); // Must update atomically with FIST
+ __ fild_d(Address(rsp,0)); // So load into FPU register
+ __ fistp_d(field); // and put into memory atomically
+ __ addptr(rsp, 2*wordSize);
+ // volatile_barrier();
+ volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad |
+ Assembler::StoreStore));
+ // Don't rewrite volatile version
+ __ jmp(notVolatile);
+
+ __ bind(notVolatileLong);
+
+ __ pop(ltos); // overwrites rdx
+ if (!is_static) pop_and_check_object(obj);
+ __ movptr(hi, rdx);
+ __ movptr(field, rax);
+ // Don't rewrite to _fast_lputfield for potential volatile case.
+ __ jmp(notVolatile);
+ }
+#endif // _LP64
+
+ __ bind(notLong);
+ __ cmpl(flags, ftos);
+ __ jcc(Assembler::notEqual, notFloat);
+
+ // ftos
+ {
+ __ pop(ftos);
+ if (!is_static) pop_and_check_object(obj);
+ NOT_LP64( __ fstp_s(field);)
+ LP64_ONLY( __ movflt(field, xmm0);)
+ if (!is_static) {
+ patch_bytecode(Bytecodes::_fast_fputfield, bc, rbx, true, byte_no);
+ }
+ __ jmp(Done);
+ }
+
+ __ bind(notFloat);
+#ifdef ASSERT
+ __ cmpl(flags, dtos);
+ __ jcc(Assembler::notEqual, notDouble);
+#endif
+
+ // dtos
+ {
+ __ pop(dtos);
+ if (!is_static) pop_and_check_object(obj);
+ NOT_LP64( __ fstp_d(field);)
+ LP64_ONLY( __ movdbl(field, xmm0);)
+ if (!is_static) {
+ patch_bytecode(Bytecodes::_fast_dputfield, bc, rbx, true, byte_no);
+ }
+ }
+
+#ifdef ASSERT
+ __ jmp(Done);
+
+ __ bind(notDouble);
+ __ stop("Bad state");
+#endif
+
+ __ bind(Done);
+
+ // Check for volatile store
+ __ testl(rdx, rdx);
+ __ jcc(Assembler::zero, notVolatile);
+ volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad |
+ Assembler::StoreStore));
+ __ bind(notVolatile);
+}
+
+void TemplateTable::putfield(int byte_no) {
+ putfield_or_static(byte_no, false);
+}
+
+void TemplateTable::putstatic(int byte_no) {
+ putfield_or_static(byte_no, true);
+}
+
+void TemplateTable::jvmti_post_fast_field_mod() {
+
+ const Register scratch = LP64_ONLY(c_rarg3) NOT_LP64(rcx);
+
+ if (JvmtiExport::can_post_field_modification()) {
+ // Check to see if a field modification watch has been set before
+ // we take the time to call into the VM.
+ Label L2;
+ __ mov32(scratch, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr()));
+ __ testl(scratch, scratch);
+ __ jcc(Assembler::zero, L2);
+ __ pop_ptr(rbx); // copy the object pointer from tos
+ __ verify_oop(rbx);
+ __ push_ptr(rbx); // put the object pointer back on tos
+ // Save tos values before call_VM() clobbers them. Since we have
+ // to do it for every data type, we use the saved values as the
+ // jvalue object.
+ switch (bytecode()) { // load values into the jvalue object
+ case Bytecodes::_fast_aputfield: __ push_ptr(rax); break;
+ case Bytecodes::_fast_bputfield: // fall through
+ case Bytecodes::_fast_sputfield: // fall through
+ case Bytecodes::_fast_cputfield: // fall through
+ case Bytecodes::_fast_iputfield: __ push_i(rax); break;
+ case Bytecodes::_fast_dputfield: __ push_d(); break;
+ case Bytecodes::_fast_fputfield: __ push_f(); break;
+ case Bytecodes::_fast_lputfield: __ push_l(rax); break;
+
+ default:
+ ShouldNotReachHere();
+ }
+ __ mov(scratch, rsp); // points to jvalue on the stack
+ // access constant pool cache entry
+ LP64_ONLY(__ get_cache_entry_pointer_at_bcp(c_rarg2, rax, 1));
+ NOT_LP64(__ get_cache_entry_pointer_at_bcp(rax, rdx, 1));
+ __ verify_oop(rbx);
+ // rbx: object pointer copied above
+ // c_rarg2: cache entry pointer
+ // c_rarg3: jvalue object on the stack
+ LP64_ONLY(__ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification), rbx, c_rarg2, c_rarg3));
+ NOT_LP64(__ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification), rbx, rax, rcx));
+
+ switch (bytecode()) { // restore tos values
+ case Bytecodes::_fast_aputfield: __ pop_ptr(rax); break;
+ case Bytecodes::_fast_bputfield: // fall through
+ case Bytecodes::_fast_sputfield: // fall through
+ case Bytecodes::_fast_cputfield: // fall through
+ case Bytecodes::_fast_iputfield: __ pop_i(rax); break;
+ case Bytecodes::_fast_dputfield: __ pop_d(); break;
+ case Bytecodes::_fast_fputfield: __ pop_f(); break;
+ case Bytecodes::_fast_lputfield: __ pop_l(rax); break;
+ }
+ __ bind(L2);
+ }
+}
+
+void TemplateTable::fast_storefield(TosState state) {
+ transition(state, vtos);
+
+ ByteSize base = ConstantPoolCache::base_offset();
+
+ jvmti_post_fast_field_mod();
+
+ // access constant pool cache
+ __ get_cache_and_index_at_bcp(rcx, rbx, 1);
+
+ // test for volatile with rdx but rdx is tos register for lputfield.
+ __ movl(rdx, Address(rcx, rbx, Address::times_ptr,
+ in_bytes(base +
+ ConstantPoolCacheEntry::flags_offset())));
+
+ // replace index with field offset from cache entry
+ __ movptr(rbx, Address(rcx, rbx, Address::times_ptr,
+ in_bytes(base + ConstantPoolCacheEntry::f2_offset())));
+
+ // [jk] not needed currently
+ // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadStore |
+ // Assembler::StoreStore));
+
+ Label notVolatile;
+ __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift);
+ __ andl(rdx, 0x1);
+
+ // Get object from stack
+ pop_and_check_object(rcx);
+
+ // field address
+ const Address field(rcx, rbx, Address::times_1);
+
+ // access field
+ switch (bytecode()) {
+ case Bytecodes::_fast_aputfield:
+ do_oop_store(_masm, field, rax, _bs->kind(), false);
+ break;
+ case Bytecodes::_fast_lputfield:
+#ifdef _LP64
+ __ movq(field, rax);
+#else
+ __ stop("should not be rewritten");
+#endif
+ break;
+ case Bytecodes::_fast_iputfield:
+ __ movl(field, rax);
+ break;
+ case Bytecodes::_fast_bputfield:
+ __ movb(field, rax);
+ break;
+ case Bytecodes::_fast_sputfield:
+ // fall through
+ case Bytecodes::_fast_cputfield:
+ __ movw(field, rax);
+ break;
+ case Bytecodes::_fast_fputfield:
+ NOT_LP64( __ fstp_s(field); )
+ LP64_ONLY( __ movflt(field, xmm0);)
+ break;
+ case Bytecodes::_fast_dputfield:
+ NOT_LP64( __ fstp_d(field); )
+ LP64_ONLY( __ movdbl(field, xmm0);)
+ break;
+ default:
+ ShouldNotReachHere();
+ }
+
+ // Check for volatile store
+ __ testl(rdx, rdx);
+ __ jcc(Assembler::zero, notVolatile);
+ volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad |
+ Assembler::StoreStore));
+ __ bind(notVolatile);
+}
+
+void TemplateTable::fast_accessfield(TosState state) {
+ transition(atos, state);
+
+ // Do the JVMTI work here to avoid disturbing the register state below
+ if (JvmtiExport::can_post_field_access()) {
+ // Check to see if a field access watch has been set before we
+ // take the time to call into the VM.
+ Label L1;
+ __ mov32(rcx, ExternalAddress((address) JvmtiExport::get_field_access_count_addr()));
+ __ testl(rcx, rcx);
+ __ jcc(Assembler::zero, L1);
+ // access constant pool cache entry
+ LP64_ONLY(__ get_cache_entry_pointer_at_bcp(c_rarg2, rcx, 1));
+ NOT_LP64(__ get_cache_entry_pointer_at_bcp(rcx, rdx, 1));
+ __ verify_oop(rax);
+ __ push_ptr(rax); // save object pointer before call_VM() clobbers it
+ LP64_ONLY(__ mov(c_rarg1, rax));
+ // c_rarg1: object pointer copied above
+ // c_rarg2: cache entry pointer
+ LP64_ONLY(__ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access), c_rarg1, c_rarg2));
+ NOT_LP64(__ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access), rax, rcx));
+ __ pop_ptr(rax); // restore object pointer
+ __ bind(L1);
+ }
+
+ // access constant pool cache
+ __ get_cache_and_index_at_bcp(rcx, rbx, 1);
+ // replace index with field offset from cache entry
+ // [jk] not needed currently
+ // if (os::is_MP()) {
+ // __ movl(rdx, Address(rcx, rbx, Address::times_8,
+ // in_bytes(ConstantPoolCache::base_offset() +
+ // ConstantPoolCacheEntry::flags_offset())));
+ // __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift);
+ // __ andl(rdx, 0x1);
+ // }
+ __ movptr(rbx, Address(rcx, rbx, Address::times_ptr,
+ in_bytes(ConstantPoolCache::base_offset() +
+ ConstantPoolCacheEntry::f2_offset())));
+
+ // rax: object
+ __ verify_oop(rax);
+ __ null_check(rax);
+ Address field(rax, rbx, Address::times_1);
+
+ // access field
+ switch (bytecode()) {
+ case Bytecodes::_fast_agetfield:
+ __ load_heap_oop(rax, field);
+ __ verify_oop(rax);
+ break;
+ case Bytecodes::_fast_lgetfield:
+#ifdef _LP64
+ __ movq(rax, field);
+#else
+ __ stop("should not be rewritten");
+#endif
+ break;
+ case Bytecodes::_fast_igetfield:
+ __ movl(rax, field);
+ break;
+ case Bytecodes::_fast_bgetfield:
+ __ movsbl(rax, field);
+ break;
+ case Bytecodes::_fast_sgetfield:
+ __ load_signed_short(rax, field);
+ break;
+ case Bytecodes::_fast_cgetfield:
+ __ load_unsigned_short(rax, field);
+ break;
+ case Bytecodes::_fast_fgetfield:
+ LP64_ONLY(__ movflt(xmm0, field));
+ NOT_LP64(__ fld_s(field));
+ break;
+ case Bytecodes::_fast_dgetfield:
+ LP64_ONLY(__ movdbl(xmm0, field));
+ NOT_LP64(__ fld_d(field));
+ break;
+ default:
+ ShouldNotReachHere();
+ }
+ // [jk] not needed currently
+ // if (os::is_MP()) {
+ // Label notVolatile;
+ // __ testl(rdx, rdx);
+ // __ jcc(Assembler::zero, notVolatile);
+ // __ membar(Assembler::LoadLoad);
+ // __ bind(notVolatile);
+ //};
+}
+
+void TemplateTable::fast_xaccess(TosState state) {
+ transition(vtos, state);
+
+ // get receiver
+ __ movptr(rax, aaddress(0));
+ // access constant pool cache
+ __ get_cache_and_index_at_bcp(rcx, rdx, 2);
+ __ movptr(rbx,
+ Address(rcx, rdx, Address::times_ptr,
+ in_bytes(ConstantPoolCache::base_offset() +
+ ConstantPoolCacheEntry::f2_offset())));
+ // make sure exception is reported in correct bcp range (getfield is
+ // next instruction)
+ __ increment(rbcp);
+ __ null_check(rax);
+ const Address field = Address(rax, rbx, Address::times_1, 0*wordSize);
+ switch (state) {
+ case itos:
+ __ movl(rax, field);
+ break;
+ case atos:
+ __ load_heap_oop(rax, field);
+ __ verify_oop(rax);
+ break;
+ case ftos:
+ LP64_ONLY(__ movflt(xmm0, field));
+ NOT_LP64(__ fld_s(field));
+ break;
+ default:
+ ShouldNotReachHere();
+ }
+
+ // [jk] not needed currently
+ // if (os::is_MP()) {
+ // Label notVolatile;
+ // __ movl(rdx, Address(rcx, rdx, Address::times_8,
+ // in_bytes(ConstantPoolCache::base_offset() +
+ // ConstantPoolCacheEntry::flags_offset())));
+ // __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift);
+ // __ testl(rdx, 0x1);
+ // __ jcc(Assembler::zero, notVolatile);
+ // __ membar(Assembler::LoadLoad);
+ // __ bind(notVolatile);
+ // }
+
+ __ decrement(rbcp);
+}
+
+//-----------------------------------------------------------------------------
+// Calls
+
+void TemplateTable::count_calls(Register method, Register temp) {
+ // implemented elsewhere
+ ShouldNotReachHere();
+}
+
+void TemplateTable::prepare_invoke(int byte_no,
+ Register method, // linked method (or i-klass)
+ Register index, // itable index, MethodType, etc.
+ Register recv, // if caller wants to see it
+ Register flags // if caller wants to test it
+ ) {
+ // determine flags
+ const Bytecodes::Code code = bytecode();
+ const bool is_invokeinterface = code == Bytecodes::_invokeinterface;
+ const bool is_invokedynamic = code == Bytecodes::_invokedynamic;
+ const bool is_invokehandle = code == Bytecodes::_invokehandle;
+ const bool is_invokevirtual = code == Bytecodes::_invokevirtual;
+ const bool is_invokespecial = code == Bytecodes::_invokespecial;
+ const bool load_receiver = (recv != noreg);
+ const bool save_flags = (flags != noreg);
+ assert(load_receiver == (code != Bytecodes::_invokestatic && code != Bytecodes::_invokedynamic), "");
+ assert(save_flags == (is_invokeinterface || is_invokevirtual), "need flags for vfinal");
+ assert(flags == noreg || flags == rdx, "");
+ assert(recv == noreg || recv == rcx, "");
+
+ // setup registers & access constant pool cache
+ if (recv == noreg) recv = rcx;
+ if (flags == noreg) flags = rdx;
+ assert_different_registers(method, index, recv, flags);
+
+ // save 'interpreter return address'
+ __ save_bcp();
+
+ load_invoke_cp_cache_entry(byte_no, method, index, flags, is_invokevirtual, false, is_invokedynamic);
+
+ // maybe push appendix to arguments (just before return address)
+ if (is_invokedynamic || is_invokehandle) {
+ Label L_no_push;
+ __ testl(flags, (1 << ConstantPoolCacheEntry::has_appendix_shift));
+ __ jcc(Assembler::zero, L_no_push);
+ // Push the appendix as a trailing parameter.
+ // This must be done before we get the receiver,
+ // since the parameter_size includes it.
+ __ push(rbx);
+ __ mov(rbx, index);
+ assert(ConstantPoolCacheEntry::_indy_resolved_references_appendix_offset == 0, "appendix expected at index+0");
+ __ load_resolved_reference_at_index(index, rbx);
+ __ pop(rbx);
+ __ push(index); // push appendix (MethodType, CallSite, etc.)
+ __ bind(L_no_push);
+ }
+
+ // load receiver if needed (after appendix is pushed so parameter size is correct)
+ // Note: no return address pushed yet
+ if (load_receiver) {
+ __ movl(recv, flags);
+ __ andl(recv, ConstantPoolCacheEntry::parameter_size_mask);
+ const int no_return_pc_pushed_yet = -1; // argument slot correction before we push return address
+ const int receiver_is_at_end = -1; // back off one slot to get receiver
+ Address recv_addr = __ argument_address(recv, no_return_pc_pushed_yet + receiver_is_at_end);
+ __ movptr(recv, recv_addr);
+ __ verify_oop(recv);
+ }
+
+ if (save_flags) {
+ __ movl(rbcp, flags);
+ }
+
+ // compute return type
+ __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift);
+ // Make sure we don't need to mask flags after the above shift
+ ConstantPoolCacheEntry::verify_tos_state_shift();
+ // load return address
+ {
+ const address table_addr = (address) Interpreter::invoke_return_entry_table_for(code);
+ ExternalAddress table(table_addr);
+ LP64_ONLY(__ lea(rscratch1, table));
+ LP64_ONLY(__ movptr(flags, Address(rscratch1, flags, Address::times_ptr)));
+ NOT_LP64(__ movptr(flags, ArrayAddress(table, Address(noreg, flags, Address::times_ptr))));
+ }
+
+ // push return address
+ __ push(flags);
+
+ // Restore flags value from the constant pool cache, and restore rsi
+ // for later null checks. r13 is the bytecode pointer
+ if (save_flags) {
+ __ movl(flags, rbcp);
+ __ restore_bcp();
+ }
+}
+
+void TemplateTable::invokevirtual_helper(Register index,
+ Register recv,
+ Register flags) {
+ // Uses temporary registers rax, rdx
+ assert_different_registers(index, recv, rax, rdx);
+ assert(index == rbx, "");
+ assert(recv == rcx, "");
+
+ // Test for an invoke of a final method
+ Label notFinal;
+ __ movl(rax, flags);
+ __ andl(rax, (1 << ConstantPoolCacheEntry::is_vfinal_shift));
+ __ jcc(Assembler::zero, notFinal);
+
+ const Register method = index; // method must be rbx
+ assert(method == rbx,
+ "Method* must be rbx for interpreter calling convention");
+
+ // do the call - the index is actually the method to call
+ // that is, f2 is a vtable index if !is_vfinal, else f2 is a Method*
+
+ // It's final, need a null check here!
+ __ null_check(recv);
+
+ // profile this call
+ __ profile_final_call(rax);
+ __ profile_arguments_type(rax, method, rbcp, true);
+
+ __ jump_from_interpreted(method, rax);
+
+ __ bind(notFinal);
+
+ // get receiver klass
+ __ null_check(recv, oopDesc::klass_offset_in_bytes());
+ __ load_klass(rax, recv);
+
+ // profile this call
+ __ profile_virtual_call(rax, rlocals, rdx);
+ // get target Method* & entry point
+ __ lookup_virtual_method(rax, index, method);
+ __ profile_arguments_type(rdx, method, rbcp, true);
+ __ jump_from_interpreted(method, rdx);
+}
+
+void TemplateTable::invokevirtual(int byte_no) {
+ transition(vtos, vtos);
+ assert(byte_no == f2_byte, "use this argument");
+ prepare_invoke(byte_no,
+ rbx, // method or vtable index
+ noreg, // unused itable index
+ rcx, rdx); // recv, flags
+
+ // rbx: index
+ // rcx: receiver
+ // rdx: flags
+
+ invokevirtual_helper(rbx, rcx, rdx);
+}
+
+void TemplateTable::invokespecial(int byte_no) {
+ transition(vtos, vtos);
+ assert(byte_no == f1_byte, "use this argument");
+ prepare_invoke(byte_no, rbx, noreg, // get f1 Method*
+ rcx); // get receiver also for null check
+ __ verify_oop(rcx);
+ __ null_check(rcx);
+ // do the call
+ __ profile_call(rax);
+ __ profile_arguments_type(rax, rbx, rbcp, false);
+ __ jump_from_interpreted(rbx, rax);
+}
+
+void TemplateTable::invokestatic(int byte_no) {
+ transition(vtos, vtos);
+ assert(byte_no == f1_byte, "use this argument");
+ prepare_invoke(byte_no, rbx); // get f1 Method*
+ // do the call
+ __ profile_call(rax);
+ __ profile_arguments_type(rax, rbx, rbcp, false);
+ __ jump_from_interpreted(rbx, rax);
+}
+
+
+void TemplateTable::fast_invokevfinal(int byte_no) {
+ transition(vtos, vtos);
+ assert(byte_no == f2_byte, "use this argument");
+ __ stop("fast_invokevfinal not used on x86");
+}
+
+
+void TemplateTable::invokeinterface(int byte_no) {
+ transition(vtos, vtos);
+ assert(byte_no == f1_byte, "use this argument");
+ prepare_invoke(byte_no, rax, rbx, // get f1 Klass*, f2 itable index
+ rcx, rdx); // recv, flags
+
+ // rax: interface klass (from f1)
+ // rbx: itable index (from f2)
+ // rcx: receiver
+ // rdx: flags
+
+ // Special case of invokeinterface called for virtual method of
+ // java.lang.Object. See cpCacheOop.cpp for details.
+ // This code isn't produced by javac, but could be produced by
+ // another compliant java compiler.
+ Label notMethod;
+ __ movl(rlocals, rdx);
+ __ andl(rlocals, (1 << ConstantPoolCacheEntry::is_forced_virtual_shift));
+
+ __ jcc(Assembler::zero, notMethod);
+
+ invokevirtual_helper(rbx, rcx, rdx);
+ __ bind(notMethod);
+
+ // Get receiver klass into rdx - also a null check
+ __ restore_locals(); // restore r14
+ __ null_check(rcx, oopDesc::klass_offset_in_bytes());
+ __ load_klass(rdx, rcx);
+
+ // profile this call
+ __ profile_virtual_call(rdx, rbcp, rlocals);
+
+ Label no_such_interface, no_such_method;
+
+ __ lookup_interface_method(// inputs: rec. class, interface, itable index
+ rdx, rax, rbx,
+ // outputs: method, scan temp. reg
+ rbx, rbcp,
+ no_such_interface);
+
+ // rbx: Method* to call
+ // rcx: receiver
+ // Check for abstract method error
+ // Note: This should be done more efficiently via a throw_abstract_method_error
+ // interpreter entry point and a conditional jump to it in case of a null
+ // method.
+ __ testptr(rbx, rbx);
+ __ jcc(Assembler::zero, no_such_method);
+
+ __ profile_arguments_type(rdx, rbx, rbcp, true);
+
+ // do the call
+ // rcx: receiver
+ // rbx,: Method*
+ __ jump_from_interpreted(rbx, rdx);
+ __ should_not_reach_here();
+
+ // exception handling code follows...
+ // note: must restore interpreter registers to canonical
+ // state for exception handling to work correctly!
+
+ __ bind(no_such_method);
+ // throw exception
+ __ pop(rbx); // pop return address (pushed by prepare_invoke)
+ __ restore_bcp(); // rbcp must be correct for exception handler (was destroyed)
+ __ restore_locals(); // make sure locals pointer is correct as well (was destroyed)
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError));
+ // the call_VM checks for exception, so we should never return here.
+ __ should_not_reach_here();
+
+ __ bind(no_such_interface);
+ // throw exception
+ __ pop(rbx); // pop return address (pushed by prepare_invoke)
+ __ restore_bcp(); // rbcp must be correct for exception handler (was destroyed)
+ __ restore_locals(); // make sure locals pointer is correct as well (was destroyed)
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::throw_IncompatibleClassChangeError));
+ // the call_VM checks for exception, so we should never return here.
+ __ should_not_reach_here();
+}
+
+void TemplateTable::invokehandle(int byte_no) {
+ transition(vtos, vtos);
+ assert(byte_no == f1_byte, "use this argument");
+ const Register rbx_method = rbx;
+ const Register rax_mtype = rax;
+ const Register rcx_recv = rcx;
+ const Register rdx_flags = rdx;
+
+ prepare_invoke(byte_no, rbx_method, rax_mtype, rcx_recv);
+ __ verify_method_ptr(rbx_method);
+ __ verify_oop(rcx_recv);
+ __ null_check(rcx_recv);
+
+ // rax: MethodType object (from cpool->resolved_references[f1], if necessary)
+ // rbx: MH.invokeExact_MT method (from f2)
+
+ // Note: rax_mtype is already pushed (if necessary) by prepare_invoke
+
+ // FIXME: profile the LambdaForm also
+ __ profile_final_call(rax);
+ __ profile_arguments_type(rdx, rbx_method, rbcp, true);
+
+ __ jump_from_interpreted(rbx_method, rdx);
+}
+
+void TemplateTable::invokedynamic(int byte_no) {
+ transition(vtos, vtos);
+ assert(byte_no == f1_byte, "use this argument");
+
+ const Register rbx_method = rbx;
+ const Register rax_callsite = rax;
+
+ prepare_invoke(byte_no, rbx_method, rax_callsite);
+
+ // rax: CallSite object (from cpool->resolved_references[f1])
+ // rbx: MH.linkToCallSite method (from f2)
+
+ // Note: rax_callsite is already pushed by prepare_invoke
+
+ // %%% should make a type profile for any invokedynamic that takes a ref argument
+ // profile this call
+ __ profile_call(rbcp);
+ __ profile_arguments_type(rdx, rbx_method, rbcp, false);
+
+ __ verify_oop(rax_callsite);
+
+ __ jump_from_interpreted(rbx_method, rdx);
+}
+
+//-----------------------------------------------------------------------------
+// Allocation
+
+void TemplateTable::_new() {
+ transition(vtos, atos);
+ __ get_unsigned_2_byte_index_at_bcp(rdx, 1);
+ Label slow_case;
+ Label slow_case_no_pop;
+ Label done;
+ Label initialize_header;
+ Label initialize_object; // including clearing the fields
+ Label allocate_shared;
+
+ __ get_cpool_and_tags(rcx, rax);
+
+ // Make sure the class we're about to instantiate has been resolved.
+ // This is done before loading InstanceKlass to be consistent with the order
+ // how Constant Pool is updated (see ConstantPool::klass_at_put)
+ const int tags_offset = Array<u1>::base_offset_in_bytes();
+ __ cmpb(Address(rax, rdx, Address::times_1, tags_offset), JVM_CONSTANT_Class);
+ __ jcc(Assembler::notEqual, slow_case_no_pop);
+
+ // get InstanceKlass
+ __ movptr(rcx, Address(rcx, rdx, Address::times_ptr, sizeof(ConstantPool)));
+ __ push(rcx); // save the contexts of klass for initializing the header
+
+ // make sure klass is initialized & doesn't have finalizer
+ // make sure klass is fully initialized
+ __ cmpb(Address(rcx, InstanceKlass::init_state_offset()), InstanceKlass::fully_initialized);
+ __ jcc(Assembler::notEqual, slow_case);
+
+ // get instance_size in InstanceKlass (scaled to a count of bytes)
+ __ movl(rdx, Address(rcx, Klass::layout_helper_offset()));
+ // test to see if it has a finalizer or is malformed in some way
+ __ testl(rdx, Klass::_lh_instance_slow_path_bit);
+ __ jcc(Assembler::notZero, slow_case);
+
+ //
+ // Allocate the instance
+ // 1) Try to allocate in the TLAB
+ // 2) if fail and the object is large allocate in the shared Eden
+ // 3) if the above fails (or is not applicable), go to a slow case
+ // (creates a new TLAB, etc.)
+
+ const bool allow_shared_alloc =
+ Universe::heap()->supports_inline_contig_alloc();
+
+ const Register thread = LP64_ONLY(r15_thread) NOT_LP64(rcx);
+#ifndef _LP64
+ if (UseTLAB || allow_shared_alloc) {
+ __ get_thread(thread);
+ }
+#endif // _LP64
+
+ if (UseTLAB) {
+ __ movptr(rax, Address(thread, in_bytes(JavaThread::tlab_top_offset())));
+ __ lea(rbx, Address(rax, rdx, Address::times_1));
+ __ cmpptr(rbx, Address(thread, in_bytes(JavaThread::tlab_end_offset())));
+ __ jcc(Assembler::above, allow_shared_alloc ? allocate_shared : slow_case);
+ __ movptr(Address(thread, in_bytes(JavaThread::tlab_top_offset())), rbx);
+ if (ZeroTLAB) {
+ // the fields have been already cleared
+ __ jmp(initialize_header);
+ } else {
+ // initialize both the header and fields
+ __ jmp(initialize_object);
+ }
+ }
+
+ // Allocation in the shared Eden, if allowed.
+ //
+ // rdx: instance size in bytes
+ if (allow_shared_alloc) {
+ __ bind(allocate_shared);
+
+ ExternalAddress heap_top((address)Universe::heap()->top_addr());
+ ExternalAddress heap_end((address)Universe::heap()->end_addr());
+
+ Label retry;
+ __ bind(retry);
+ __ movptr(rax, heap_top);
+ __ lea(rbx, Address(rax, rdx, Address::times_1));
+ __ cmpptr(rbx, heap_end);
+ __ jcc(Assembler::above, slow_case);
+
+ // Compare rax, with the top addr, and if still equal, store the new
+ // top addr in rbx, at the address of the top addr pointer. Sets ZF if was
+ // equal, and clears it otherwise. Use lock prefix for atomicity on MPs.
+ //
+ // rax,: object begin
+ // rbx,: object end
+ // rdx: instance size in bytes
+ __ locked_cmpxchgptr(rbx, heap_top);
+
+ // if someone beat us on the allocation, try again, otherwise continue
+ __ jcc(Assembler::notEqual, retry);
+
+ __ incr_allocated_bytes(thread, rdx, 0);
+ }
+
+ if (UseTLAB || Universe::heap()->supports_inline_contig_alloc()) {
+ // The object is initialized before the header. If the object size is
+ // zero, go directly to the header initialization.
+ __ bind(initialize_object);
+ __ decrement(rdx, sizeof(oopDesc));
+ __ jcc(Assembler::zero, initialize_header);
+
+ // Initialize topmost object field, divide rdx by 8, check if odd and
+ // test if zero.
+ __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code)
+ __ shrl(rdx, LogBytesPerLong); // divide by 2*oopSize and set carry flag if odd
+
+ // rdx must have been multiple of 8
+#ifdef ASSERT
+ // make sure rdx was multiple of 8
+ Label L;
+ // Ignore partial flag stall after shrl() since it is debug VM
+ __ jccb(Assembler::carryClear, L);
+ __ stop("object size is not multiple of 2 - adjust this code");
+ __ bind(L);
+ // rdx must be > 0, no extra check needed here
+#endif
+
+ // initialize remaining object fields: rdx was a multiple of 8
+ { Label loop;
+ __ bind(loop);
+ __ movptr(Address(rax, rdx, Address::times_8, sizeof(oopDesc) - 1*oopSize), rcx);
+ NOT_LP64(__ movptr(Address(rax, rdx, Address::times_8, sizeof(oopDesc) - 2*oopSize), rcx));
+ __ decrement(rdx);
+ __ jcc(Assembler::notZero, loop);
+ }
+
+ // initialize object header only.
+ __ bind(initialize_header);
+ if (UseBiasedLocking) {
+ __ pop(rcx); // get saved klass back in the register.
+ __ movptr(rbx, Address(rcx, Klass::prototype_header_offset()));
+ __ movptr(Address(rax, oopDesc::mark_offset_in_bytes ()), rbx);
+ } else {
+ __ movptr(Address(rax, oopDesc::mark_offset_in_bytes ()),
+ (intptr_t)markOopDesc::prototype()); // header
+ __ pop(rcx); // get saved klass back in the register.
+ }
+#ifdef _LP64
+ __ xorl(rsi, rsi); // use zero reg to clear memory (shorter code)
+ __ store_klass_gap(rax, rsi); // zero klass gap for compressed oops
+#endif
+ __ store_klass(rax, rcx); // klass
+
+ {
+ SkipIfEqual skip_if(_masm, &DTraceAllocProbes, 0);
+ // Trigger dtrace event for fastpath
+ __ push(atos);
+ __ call_VM_leaf(
+ CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), rax);
+ __ pop(atos);
+ }
+
+ __ jmp(done);
+ }
+
+ // slow case
+ __ bind(slow_case);
+ __ pop(rcx); // restore stack pointer to what it was when we came in.
+ __ bind(slow_case_no_pop);
+
+ Register rarg1 = LP64_ONLY(c_rarg1) NOT_LP64(rax);
+ Register rarg2 = LP64_ONLY(c_rarg2) NOT_LP64(rdx);
+
+ __ get_constant_pool(rarg1);
+ __ get_unsigned_2_byte_index_at_bcp(rarg2, 1);
+ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::_new), rarg1, rarg2);
+ __ verify_oop(rax);
+
+ // continue
+ __ bind(done);
+}
+
+void TemplateTable::newarray() {
+ transition(itos, atos);
+ Register rarg1 = LP64_ONLY(c_rarg1) NOT_LP64(rdx);
+ __ load_unsigned_byte(rarg1, at_bcp(1));
+ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::newarray),
+ rarg1, rax);
+}
+
+void TemplateTable::anewarray() {
+ transition(itos, atos);
+
+ Register rarg1 = LP64_ONLY(c_rarg1) NOT_LP64(rcx);
+ Register rarg2 = LP64_ONLY(c_rarg2) NOT_LP64(rdx);
+
+ __ get_unsigned_2_byte_index_at_bcp(rarg2, 1);
+ __ get_constant_pool(rarg1);
+ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::anewarray),
+ rarg1, rarg2, rax);
+}
+
+void TemplateTable::arraylength() {
+ transition(atos, itos);
+ __ null_check(rax, arrayOopDesc::length_offset_in_bytes());
+ __ movl(rax, Address(rax, arrayOopDesc::length_offset_in_bytes()));
+}
+
+void TemplateTable::checkcast() {
+ transition(atos, atos);
+ Label done, is_null, ok_is_subtype, quicked, resolved;
+ __ testptr(rax, rax); // object is in rax
+ __ jcc(Assembler::zero, is_null);
+
+ // Get cpool & tags index
+ __ get_cpool_and_tags(rcx, rdx); // rcx=cpool, rdx=tags array
+ __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // rbx=index
+ // See if bytecode has already been quicked
+ __ cmpb(Address(rdx, rbx,
+ Address::times_1,
+ Array<u1>::base_offset_in_bytes()),
+ JVM_CONSTANT_Class);
+ __ jcc(Assembler::equal, quicked);
+ __ push(atos); // save receiver for result, and for GC
+ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc));
+
+ // vm_result_2 has metadata result
+#ifndef _LP64
+ // borrow rdi from locals
+ __ get_thread(rdi);
+ __ get_vm_result_2(rax, rdi);
+ __ restore_locals();
+#else
+ __ get_vm_result_2(rax, r15_thread);
+#endif
+
+ __ pop_ptr(rdx); // restore receiver
+ __ jmpb(resolved);
+
+ // Get superklass in rax and subklass in rbx
+ __ bind(quicked);
+ __ mov(rdx, rax); // Save object in rdx; rax needed for subtype check
+ __ movptr(rax, Address(rcx, rbx,
+ Address::times_ptr, sizeof(ConstantPool)));
+
+ __ bind(resolved);
+ __ load_klass(rbx, rdx);
+
+ // Generate subtype check. Blows rcx, rdi. Object in rdx.
+ // Superklass in rax. Subklass in rbx.
+ __ gen_subtype_check(rbx, ok_is_subtype);
+
+ // Come here on failure
+ __ push_ptr(rdx);
+ // object is at TOS
+ __ jump(ExternalAddress(Interpreter::_throw_ClassCastException_entry));
+
+ // Come here on success
+ __ bind(ok_is_subtype);
+ __ mov(rax, rdx); // Restore object in rdx
+
+ // Collect counts on whether this check-cast sees NULLs a lot or not.
+ if (ProfileInterpreter) {
+ __ jmp(done);
+ __ bind(is_null);
+ __ profile_null_seen(rcx);
+ } else {
+ __ bind(is_null); // same as 'done'
+ }
+ __ bind(done);
+}
+
+void TemplateTable::instanceof() {
+ transition(atos, itos);
+ Label done, is_null, ok_is_subtype, quicked, resolved;
+ __ testptr(rax, rax);
+ __ jcc(Assembler::zero, is_null);
+
+ // Get cpool & tags index
+ __ get_cpool_and_tags(rcx, rdx); // rcx=cpool, rdx=tags array
+ __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // rbx=index
+ // See if bytecode has already been quicked
+ __ cmpb(Address(rdx, rbx,
+ Address::times_1,
+ Array<u1>::base_offset_in_bytes()),
+ JVM_CONSTANT_Class);
+ __ jcc(Assembler::equal, quicked);
+
+ __ push(atos); // save receiver for result, and for GC
+ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc));
+ // vm_result_2 has metadata result
+
+#ifndef _LP64
+ // borrow rdi from locals
+ __ get_thread(rdi);
+ __ get_vm_result_2(rax, rdi);
+ __ restore_locals();
+#else
+ __ get_vm_result_2(rax, r15_thread);
+#endif
+
+ __ pop_ptr(rdx); // restore receiver
+ __ verify_oop(rdx);
+ __ load_klass(rdx, rdx);
+ __ jmpb(resolved);
+
+ // Get superklass in rax and subklass in rdx
+ __ bind(quicked);
+ __ load_klass(rdx, rax);
+ __ movptr(rax, Address(rcx, rbx,
+ Address::times_ptr, sizeof(ConstantPool)));
+
+ __ bind(resolved);
+
+ // Generate subtype check. Blows rcx, rdi
+ // Superklass in rax. Subklass in rdx.
+ __ gen_subtype_check(rdx, ok_is_subtype);
+
+ // Come here on failure
+ __ xorl(rax, rax);
+ __ jmpb(done);
+ // Come here on success
+ __ bind(ok_is_subtype);
+ __ movl(rax, 1);
+
+ // Collect counts on whether this test sees NULLs a lot or not.
+ if (ProfileInterpreter) {
+ __ jmp(done);
+ __ bind(is_null);
+ __ profile_null_seen(rcx);
+ } else {
+ __ bind(is_null); // same as 'done'
+ }
+ __ bind(done);
+ // rax = 0: obj == NULL or obj is not an instanceof the specified klass
+ // rax = 1: obj != NULL and obj is an instanceof the specified klass
+}
+
+
+//----------------------------------------------------------------------------------------------------
+// Breakpoints
+void TemplateTable::_breakpoint() {
+ // Note: We get here even if we are single stepping..
+ // jbug insists on setting breakpoints at every bytecode
+ // even if we are in single step mode.
+
+ transition(vtos, vtos);
+
+ Register rarg = LP64_ONLY(c_rarg1) NOT_LP64(rcx);
+
+ // get the unpatched byte code
+ __ get_method(rarg);
+ __ call_VM(noreg,
+ CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::get_original_bytecode_at),
+ rarg, rbcp);
+ __ mov(rbx, rax); // why?
+
+ // post the breakpoint event
+ __ get_method(rarg);
+ __ call_VM(noreg,
+ CAST_FROM_FN_PTR(address, InterpreterRuntime::_breakpoint),
+ rarg, rbcp);
+
+ // complete the execution of original bytecode
+ __ dispatch_only_normal(vtos);
+}
+
+//-----------------------------------------------------------------------------
+// Exceptions
+
+void TemplateTable::athrow() {
+ transition(atos, vtos);
+ __ null_check(rax);
+ __ jump(ExternalAddress(Interpreter::throw_exception_entry()));
+}
+
+//-----------------------------------------------------------------------------
+// Synchronization
+//
+// Note: monitorenter & exit are symmetric routines; which is reflected
+// in the assembly code structure as well
+//
+// Stack layout:
+//
+// [expressions ] <--- rsp = expression stack top
+// ..
+// [expressions ]
+// [monitor entry] <--- monitor block top = expression stack bot
+// ..
+// [monitor entry]
+// [frame data ] <--- monitor block bot
+// ...
+// [saved rbp ] <--- rbp
+void TemplateTable::monitorenter() {
+ transition(atos, vtos);
+
+ // check for NULL object
+ __ null_check(rax);
+
+ const Address monitor_block_top(
+ rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize);
+ const Address monitor_block_bot(
+ rbp, frame::interpreter_frame_initial_sp_offset * wordSize);
+ const int entry_size = frame::interpreter_frame_monitor_size() * wordSize;
+
+ Label allocated;
+
+ Register rtop = LP64_ONLY(c_rarg3) NOT_LP64(rcx);
+ Register rbot = LP64_ONLY(c_rarg2) NOT_LP64(rbx);
+ Register rmon = LP64_ONLY(c_rarg1) NOT_LP64(rdx);
+
+ // initialize entry pointer
+ __ xorl(rmon, rmon); // points to free slot or NULL
+
+ // find a free slot in the monitor block (result in rmon)
+ {
+ Label entry, loop, exit;
+ __ movptr(rtop, monitor_block_top); // points to current entry,
+ // starting with top-most entry
+ __ lea(rbot, monitor_block_bot); // points to word before bottom
+ // of monitor block
+ __ jmpb(entry);
+
+ __ bind(loop);
+ // check if current entry is used
+ __ cmpptr(Address(rtop, BasicObjectLock::obj_offset_in_bytes()), (int32_t) NULL_WORD);
+ // if not used then remember entry in rmon
+ __ cmovptr(Assembler::equal, rmon, rtop); // cmov => cmovptr
+ // check if current entry is for same object
+ __ cmpptr(rax, Address(rtop, BasicObjectLock::obj_offset_in_bytes()));
+ // if same object then stop searching
+ __ jccb(Assembler::equal, exit);
+ // otherwise advance to next entry
+ __ addptr(rtop, entry_size);
+ __ bind(entry);
+ // check if bottom reached
+ __ cmpptr(rtop, rbot);
+ // if not at bottom then check this entry
+ __ jcc(Assembler::notEqual, loop);
+ __ bind(exit);
+ }
+
+ __ testptr(rmon, rmon); // check if a slot has been found
+ __ jcc(Assembler::notZero, allocated); // if found, continue with that one
+
+ // allocate one if there's no free slot
+ {
+ Label entry, loop;
+ // 1. compute new pointers // rsp: old expression stack top
+ __ movptr(rmon, monitor_block_bot); // rmon: old expression stack bottom
+ __ subptr(rsp, entry_size); // move expression stack top
+ __ subptr(rmon, entry_size); // move expression stack bottom
+ __ mov(rtop, rsp); // set start value for copy loop
+ __ movptr(monitor_block_bot, rmon); // set new monitor block bottom
+ __ jmp(entry);
+ // 2. move expression stack contents
+ __ bind(loop);
+ __ movptr(rbot, Address(rtop, entry_size)); // load expression stack
+ // word from old location
+ __ movptr(Address(rtop, 0), rbot); // and store it at new location
+ __ addptr(rtop, wordSize); // advance to next word
+ __ bind(entry);
+ __ cmpptr(rtop, rmon); // check if bottom reached
+ __ jcc(Assembler::notEqual, loop); // if not at bottom then
+ // copy next word
+ }
+
+ // call run-time routine
+ // rmon: points to monitor entry
+ __ bind(allocated);
+
+ // Increment bcp to point to the next bytecode, so exception
+ // handling for async. exceptions work correctly.
+ // The object has already been poped from the stack, so the
+ // expression stack looks correct.
+ __ increment(rbcp);
+
+ // store object
+ __ movptr(Address(rmon, BasicObjectLock::obj_offset_in_bytes()), rax);
+ __ lock_object(rmon);
+
+ // check to make sure this monitor doesn't cause stack overflow after locking
+ __ save_bcp(); // in case of exception
+ __ generate_stack_overflow_check(0);
+
+ // The bcp has already been incremented. Just need to dispatch to
+ // next instruction.
+ __ dispatch_next(vtos);
+}
+
+void TemplateTable::monitorexit() {
+ transition(atos, vtos);
+
+ // check for NULL object
+ __ null_check(rax);
+
+ const Address monitor_block_top(
+ rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize);
+ const Address monitor_block_bot(
+ rbp, frame::interpreter_frame_initial_sp_offset * wordSize);
+ const int entry_size = frame::interpreter_frame_monitor_size() * wordSize;
+
+ Register rtop = LP64_ONLY(c_rarg1) NOT_LP64(rdx);
+ Register rbot = LP64_ONLY(c_rarg2) NOT_LP64(rbx);
+
+ Label found;
+
+ // find matching slot
+ {
+ Label entry, loop;
+ __ movptr(rtop, monitor_block_top); // points to current entry,
+ // starting with top-most entry
+ __ lea(rbot, monitor_block_bot); // points to word before bottom
+ // of monitor block
+ __ jmpb(entry);
+
+ __ bind(loop);
+ // check if current entry is for same object
+ __ cmpptr(rax, Address(rtop, BasicObjectLock::obj_offset_in_bytes()));
+ // if same object then stop searching
+ __ jcc(Assembler::equal, found);
+ // otherwise advance to next entry
+ __ addptr(rtop, entry_size);
+ __ bind(entry);
+ // check if bottom reached
+ __ cmpptr(rtop, rbot);
+ // if not at bottom then check this entry
+ __ jcc(Assembler::notEqual, loop);
+ }
+
+ // error handling. Unlocking was not block-structured
+ __ call_VM(noreg, CAST_FROM_FN_PTR(address,
+ InterpreterRuntime::throw_illegal_monitor_state_exception));
+ __ should_not_reach_here();
+
+ // call run-time routine
+ __ bind(found);
+ __ push_ptr(rax); // make sure object is on stack (contract with oopMaps)
+ __ unlock_object(rtop);
+ __ pop_ptr(rax); // discard object
+}
+
+// Wide instructions
+void TemplateTable::wide() {
+ transition(vtos, vtos);
+ __ load_unsigned_byte(rbx, at_bcp(1));
+ ExternalAddress wtable((address)Interpreter::_wentry_point);
+ __ jump(ArrayAddress(wtable, Address(noreg, rbx, Address::times_ptr)));
+ // Note: the rbcp increment step is part of the individual wide bytecode implementations
+}
+
+// Multi arrays
+void TemplateTable::multianewarray() {
+ transition(vtos, atos);
+
+ Register rarg = LP64_ONLY(c_rarg1) NOT_LP64(rax);
+ __ load_unsigned_byte(rax, at_bcp(3)); // get number of dimensions
+ // last dim is on top of stack; we want address of first one:
+ // first_addr = last_addr + (ndims - 1) * stackElementSize - 1*wordsize
+ // the latter wordSize to point to the beginning of the array.
+ __ lea(rarg, Address(rsp, rax, Interpreter::stackElementScale(), -wordSize));
+ call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::multianewarray), rarg);
+ __ load_unsigned_byte(rbx, at_bcp(3));
+ __ lea(rsp, Address(rsp, rbx, Interpreter::stackElementScale())); // get rid of counts
+}
+#endif /* !CC_INTERP */
+
--- a/hotspot/src/cpu/x86/vm/templateTable_x86_32.cpp Fri Mar 06 17:19:08 2015 -0800
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,3668 +0,0 @@
-/*
- * Copyright (c) 1997, 2014, 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/interpreterRuntime.hpp"
-#include "interpreter/interp_masm.hpp"
-#include "interpreter/templateTable.hpp"
-#include "memory/universe.inline.hpp"
-#include "oops/methodData.hpp"
-#include "oops/objArrayKlass.hpp"
-#include "oops/oop.inline.hpp"
-#include "prims/methodHandles.hpp"
-#include "runtime/sharedRuntime.hpp"
-#include "runtime/stubRoutines.hpp"
-#include "runtime/synchronizer.hpp"
-#include "utilities/macros.hpp"
-
-#ifndef CC_INTERP
-#define __ _masm->
-
-//----------------------------------------------------------------------------------------------------
-// Platform-dependent initialization
-
-void TemplateTable::pd_initialize() {
- // No i486 specific initialization
-}
-
-//----------------------------------------------------------------------------------------------------
-// Address computation
-
-// local variables
-static inline Address iaddress(int n) {
- return Address(rdi, Interpreter::local_offset_in_bytes(n));
-}
-
-static inline Address laddress(int n) { return iaddress(n + 1); }
-static inline Address haddress(int n) { return iaddress(n + 0); }
-static inline Address faddress(int n) { return iaddress(n); }
-static inline Address daddress(int n) { return laddress(n); }
-static inline Address aaddress(int n) { return iaddress(n); }
-
-static inline Address iaddress(Register r) {
- return Address(rdi, r, Interpreter::stackElementScale());
-}
-static inline Address laddress(Register r) {
- return Address(rdi, r, Interpreter::stackElementScale(), Interpreter::local_offset_in_bytes(1));
-}
-static inline Address haddress(Register r) {
- return Address(rdi, r, Interpreter::stackElementScale(), Interpreter::local_offset_in_bytes(0));
-}
-
-static inline Address faddress(Register r) { return iaddress(r); }
-static inline Address daddress(Register r) { return laddress(r); }
-static inline Address aaddress(Register r) { return iaddress(r); }
-
-// expression stack
-// (Note: Must not use symmetric equivalents at_rsp_m1/2 since they store
-// data beyond the rsp which is potentially unsafe in an MT environment;
-// an interrupt may overwrite that data.)
-static inline Address at_rsp () {
- return Address(rsp, 0);
-}
-
-// At top of Java expression stack which may be different than rsp(). It
-// isn't for category 1 objects.
-static inline Address at_tos () {
- Address tos = Address(rsp, Interpreter::expr_offset_in_bytes(0));
- return tos;
-}
-
-static inline Address at_tos_p1() {
- return Address(rsp, Interpreter::expr_offset_in_bytes(1));
-}
-
-static inline Address at_tos_p2() {
- return Address(rsp, Interpreter::expr_offset_in_bytes(2));
-}
-
-// Condition conversion
-static Assembler::Condition j_not(TemplateTable::Condition cc) {
- switch (cc) {
- case TemplateTable::equal : return Assembler::notEqual;
- case TemplateTable::not_equal : return Assembler::equal;
- case TemplateTable::less : return Assembler::greaterEqual;
- case TemplateTable::less_equal : return Assembler::greater;
- case TemplateTable::greater : return Assembler::lessEqual;
- case TemplateTable::greater_equal: return Assembler::less;
- }
- ShouldNotReachHere();
- return Assembler::zero;
-}
-
-
-//----------------------------------------------------------------------------------------------------
-// Miscelaneous helper routines
-
-// Store an oop (or NULL) at the address described by obj.
-// If val == noreg this means store a NULL
-
-static void do_oop_store(InterpreterMacroAssembler* _masm,
- Address obj,
- Register val,
- BarrierSet::Name barrier,
- bool precise) {
- assert(val == noreg || val == rax, "parameter is just for looks");
- switch (barrier) {
-#if INCLUDE_ALL_GCS
- case BarrierSet::G1SATBCT:
- case BarrierSet::G1SATBCTLogging:
- {
- // flatten object address if needed
- // We do it regardless of precise because we need the registers
- if (obj.index() == noreg && obj.disp() == 0) {
- if (obj.base() != rdx) {
- __ movl(rdx, obj.base());
- }
- } else {
- __ leal(rdx, obj);
- }
- __ get_thread(rcx);
- __ save_bcp();
- __ g1_write_barrier_pre(rdx /* obj */,
- rbx /* pre_val */,
- rcx /* thread */,
- rsi /* tmp */,
- val != noreg /* tosca_live */,
- false /* expand_call */);
-
- // Do the actual store
- // noreg means NULL
- if (val == noreg) {
- __ movptr(Address(rdx, 0), NULL_WORD);
- // No post barrier for NULL
- } else {
- __ movl(Address(rdx, 0), val);
- __ g1_write_barrier_post(rdx /* store_adr */,
- val /* new_val */,
- rcx /* thread */,
- rbx /* tmp */,
- rsi /* tmp2 */);
- }
- __ restore_bcp();
-
- }
- break;
-#endif // INCLUDE_ALL_GCS
- case BarrierSet::CardTableModRef:
- case BarrierSet::CardTableExtension:
- {
- if (val == noreg) {
- __ movptr(obj, NULL_WORD);
- } else {
- __ movl(obj, val);
- // flatten object address if needed
- if (!precise || (obj.index() == noreg && obj.disp() == 0)) {
- __ store_check(obj.base());
- } else {
- __ leal(rdx, obj);
- __ store_check(rdx);
- }
- }
- }
- break;
- case BarrierSet::ModRef:
- if (val == noreg) {
- __ movptr(obj, NULL_WORD);
- } else {
- __ movl(obj, val);
- }
- break;
- default :
- ShouldNotReachHere();
-
- }
-}
-
-Address TemplateTable::at_bcp(int offset) {
- assert(_desc->uses_bcp(), "inconsistent uses_bcp information");
- return Address(rsi, offset);
-}
-
-
-void TemplateTable::patch_bytecode(Bytecodes::Code bc, Register bc_reg,
- Register temp_reg, bool load_bc_into_bc_reg/*=true*/,
- int byte_no) {
- if (!RewriteBytecodes) return;
- Label L_patch_done;
-
- switch (bc) {
- case Bytecodes::_fast_aputfield:
- case Bytecodes::_fast_bputfield:
- case Bytecodes::_fast_cputfield:
- case Bytecodes::_fast_dputfield:
- case Bytecodes::_fast_fputfield:
- case Bytecodes::_fast_iputfield:
- case Bytecodes::_fast_lputfield:
- case Bytecodes::_fast_sputfield:
- {
- // We skip bytecode quickening for putfield instructions when
- // the put_code written to the constant pool cache is zero.
- // This is required so that every execution of this instruction
- // calls out to InterpreterRuntime::resolve_get_put to do
- // additional, required work.
- assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range");
- assert(load_bc_into_bc_reg, "we use bc_reg as temp");
- __ get_cache_and_index_and_bytecode_at_bcp(bc_reg, temp_reg, temp_reg, byte_no, 1);
- __ movl(bc_reg, bc);
- __ cmpl(temp_reg, (int) 0);
- __ jcc(Assembler::zero, L_patch_done); // don't patch
- }
- break;
- default:
- assert(byte_no == -1, "sanity");
- // the pair bytecodes have already done the load.
- if (load_bc_into_bc_reg) {
- __ movl(bc_reg, bc);
- }
- }
-
- if (JvmtiExport::can_post_breakpoint()) {
- Label L_fast_patch;
- // if a breakpoint is present we can't rewrite the stream directly
- __ movzbl(temp_reg, at_bcp(0));
- __ cmpl(temp_reg, Bytecodes::_breakpoint);
- __ jcc(Assembler::notEqual, L_fast_patch);
- __ get_method(temp_reg);
- // Let breakpoint table handling rewrite to quicker bytecode
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::set_original_bytecode_at), temp_reg, rsi, bc_reg);
-#ifndef ASSERT
- __ jmpb(L_patch_done);
-#else
- __ jmp(L_patch_done);
-#endif
- __ bind(L_fast_patch);
- }
-
-#ifdef ASSERT
- Label L_okay;
- __ load_unsigned_byte(temp_reg, at_bcp(0));
- __ cmpl(temp_reg, (int)Bytecodes::java_code(bc));
- __ jccb(Assembler::equal, L_okay);
- __ cmpl(temp_reg, bc_reg);
- __ jcc(Assembler::equal, L_okay);
- __ stop("patching the wrong bytecode");
- __ bind(L_okay);
-#endif
-
- // patch bytecode
- __ movb(at_bcp(0), bc_reg);
- __ bind(L_patch_done);
-}
-
-//----------------------------------------------------------------------------------------------------
-// Individual instructions
-
-void TemplateTable::nop() {
- transition(vtos, vtos);
- // nothing to do
-}
-
-void TemplateTable::shouldnotreachhere() {
- transition(vtos, vtos);
- __ stop("shouldnotreachhere bytecode");
-}
-
-
-
-void TemplateTable::aconst_null() {
- transition(vtos, atos);
- __ xorptr(rax, rax);
-}
-
-
-void TemplateTable::iconst(int value) {
- transition(vtos, itos);
- if (value == 0) {
- __ xorptr(rax, rax);
- } else {
- __ movptr(rax, value);
- }
-}
-
-
-void TemplateTable::lconst(int value) {
- transition(vtos, ltos);
- if (value == 0) {
- __ xorptr(rax, rax);
- } else {
- __ movptr(rax, value);
- }
- assert(value >= 0, "check this code");
- __ xorptr(rdx, rdx);
-}
-
-
-void TemplateTable::fconst(int value) {
- transition(vtos, ftos);
- if (value == 0) { __ fldz();
- } else if (value == 1) { __ fld1();
- } else if (value == 2) { __ fld1(); __ fld1(); __ faddp(); // should do a better solution here
- } else { ShouldNotReachHere();
- }
-}
-
-
-void TemplateTable::dconst(int value) {
- transition(vtos, dtos);
- if (value == 0) { __ fldz();
- } else if (value == 1) { __ fld1();
- } else { ShouldNotReachHere();
- }
-}
-
-
-void TemplateTable::bipush() {
- transition(vtos, itos);
- __ load_signed_byte(rax, at_bcp(1));
-}
-
-
-void TemplateTable::sipush() {
- transition(vtos, itos);
- __ load_unsigned_short(rax, at_bcp(1));
- __ bswapl(rax);
- __ sarl(rax, 16);
-}
-
-void TemplateTable::ldc(bool wide) {
- transition(vtos, vtos);
- Label call_ldc, notFloat, notClass, Done;
-
- if (wide) {
- __ get_unsigned_2_byte_index_at_bcp(rbx, 1);
- } else {
- __ load_unsigned_byte(rbx, at_bcp(1));
- }
- __ get_cpool_and_tags(rcx, rax);
- const int base_offset = ConstantPool::header_size() * wordSize;
- const int tags_offset = Array<u1>::base_offset_in_bytes();
-
- // get type
- __ xorptr(rdx, rdx);
- __ movb(rdx, Address(rax, rbx, Address::times_1, tags_offset));
-
- // unresolved class - get the resolved class
- __ cmpl(rdx, JVM_CONSTANT_UnresolvedClass);
- __ jccb(Assembler::equal, call_ldc);
-
- // unresolved class in error (resolution failed) - call into runtime
- // so that the same error from first resolution attempt is thrown.
- __ cmpl(rdx, JVM_CONSTANT_UnresolvedClassInError);
- __ jccb(Assembler::equal, call_ldc);
-
- // resolved class - need to call vm to get java mirror of the class
- __ cmpl(rdx, JVM_CONSTANT_Class);
- __ jcc(Assembler::notEqual, notClass);
-
- __ bind(call_ldc);
- __ movl(rcx, wide);
- call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::ldc), rcx);
- __ push(atos);
- __ jmp(Done);
-
- __ bind(notClass);
- __ cmpl(rdx, JVM_CONSTANT_Float);
- __ jccb(Assembler::notEqual, notFloat);
- // ftos
- __ fld_s( Address(rcx, rbx, Address::times_ptr, base_offset));
- __ push(ftos);
- __ jmp(Done);
-
- __ bind(notFloat);
-#ifdef ASSERT
- { Label L;
- __ cmpl(rdx, JVM_CONSTANT_Integer);
- __ jcc(Assembler::equal, L);
- // String and Object are rewritten to fast_aldc
- __ stop("unexpected tag type in ldc");
- __ bind(L);
- }
-#endif
- // itos JVM_CONSTANT_Integer only
- __ movl(rax, Address(rcx, rbx, Address::times_ptr, base_offset));
- __ push(itos);
- __ bind(Done);
-}
-
-// Fast path for caching oop constants.
-void TemplateTable::fast_aldc(bool wide) {
- transition(vtos, atos);
-
- Register result = rax;
- Register tmp = rdx;
- int index_size = wide ? sizeof(u2) : sizeof(u1);
-
- Label resolved;
-
- // We are resolved if the resolved reference cache entry contains a
- // non-null object (String, MethodType, etc.)
- assert_different_registers(result, tmp);
- __ get_cache_index_at_bcp(tmp, 1, index_size);
- __ load_resolved_reference_at_index(result, tmp);
- __ testl(result, result);
- __ jcc(Assembler::notZero, resolved);
-
- address entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc);
-
- // first time invocation - must resolve first
- __ movl(tmp, (int)bytecode());
- __ call_VM(result, entry, tmp);
-
- __ bind(resolved);
-
- if (VerifyOops) {
- __ verify_oop(result);
- }
-}
-
-void TemplateTable::ldc2_w() {
- transition(vtos, vtos);
- Label Long, Done;
- __ get_unsigned_2_byte_index_at_bcp(rbx, 1);
-
- __ get_cpool_and_tags(rcx, rax);
- const int base_offset = ConstantPool::header_size() * wordSize;
- const int tags_offset = Array<u1>::base_offset_in_bytes();
-
- // get type
- __ cmpb(Address(rax, rbx, Address::times_1, tags_offset), JVM_CONSTANT_Double);
- __ jccb(Assembler::notEqual, Long);
- // dtos
- __ fld_d( Address(rcx, rbx, Address::times_ptr, base_offset));
- __ push(dtos);
- __ jmpb(Done);
-
- __ bind(Long);
- // ltos
- __ movptr(rax, Address(rcx, rbx, Address::times_ptr, base_offset + 0 * wordSize));
- NOT_LP64(__ movptr(rdx, Address(rcx, rbx, Address::times_ptr, base_offset + 1 * wordSize)));
-
- __ push(ltos);
-
- __ bind(Done);
-}
-
-
-void TemplateTable::locals_index(Register reg, int offset) {
- __ load_unsigned_byte(reg, at_bcp(offset));
- __ negptr(reg);
-}
-
-
-void TemplateTable::iload() {
- transition(vtos, itos);
- if (RewriteFrequentPairs) {
- Label rewrite, done;
-
- // get next byte
- __ load_unsigned_byte(rbx, at_bcp(Bytecodes::length_for(Bytecodes::_iload)));
- // if _iload, wait to rewrite to iload2. We only want to rewrite the
- // last two iloads in a pair. Comparing against fast_iload means that
- // the next bytecode is neither an iload or a caload, and therefore
- // an iload pair.
- __ cmpl(rbx, Bytecodes::_iload);
- __ jcc(Assembler::equal, done);
-
- __ cmpl(rbx, Bytecodes::_fast_iload);
- __ movl(rcx, Bytecodes::_fast_iload2);
- __ jccb(Assembler::equal, rewrite);
-
- // if _caload, rewrite to fast_icaload
- __ cmpl(rbx, Bytecodes::_caload);
- __ movl(rcx, Bytecodes::_fast_icaload);
- __ jccb(Assembler::equal, rewrite);
-
- // rewrite so iload doesn't check again.
- __ movl(rcx, Bytecodes::_fast_iload);
-
- // rewrite
- // rcx: fast bytecode
- __ bind(rewrite);
- patch_bytecode(Bytecodes::_iload, rcx, rbx, false);
- __ bind(done);
- }
-
- // Get the local value into tos
- locals_index(rbx);
- __ movl(rax, iaddress(rbx));
-}
-
-
-void TemplateTable::fast_iload2() {
- transition(vtos, itos);
- locals_index(rbx);
- __ movl(rax, iaddress(rbx));
- __ push(itos);
- locals_index(rbx, 3);
- __ movl(rax, iaddress(rbx));
-}
-
-void TemplateTable::fast_iload() {
- transition(vtos, itos);
- locals_index(rbx);
- __ movl(rax, iaddress(rbx));
-}
-
-
-void TemplateTable::lload() {
- transition(vtos, ltos);
- locals_index(rbx);
- __ movptr(rax, laddress(rbx));
- NOT_LP64(__ movl(rdx, haddress(rbx)));
-}
-
-
-void TemplateTable::fload() {
- transition(vtos, ftos);
- locals_index(rbx);
- __ fld_s(faddress(rbx));
-}
-
-
-void TemplateTable::dload() {
- transition(vtos, dtos);
- locals_index(rbx);
- __ fld_d(daddress(rbx));
-}
-
-
-void TemplateTable::aload() {
- transition(vtos, atos);
- locals_index(rbx);
- __ movptr(rax, aaddress(rbx));
-}
-
-
-void TemplateTable::locals_index_wide(Register reg) {
- __ load_unsigned_short(reg, at_bcp(2));
- __ bswapl(reg);
- __ shrl(reg, 16);
- __ negptr(reg);
-}
-
-
-void TemplateTable::wide_iload() {
- transition(vtos, itos);
- locals_index_wide(rbx);
- __ movl(rax, iaddress(rbx));
-}
-
-
-void TemplateTable::wide_lload() {
- transition(vtos, ltos);
- locals_index_wide(rbx);
- __ movptr(rax, laddress(rbx));
- NOT_LP64(__ movl(rdx, haddress(rbx)));
-}
-
-
-void TemplateTable::wide_fload() {
- transition(vtos, ftos);
- locals_index_wide(rbx);
- __ fld_s(faddress(rbx));
-}
-
-
-void TemplateTable::wide_dload() {
- transition(vtos, dtos);
- locals_index_wide(rbx);
- __ fld_d(daddress(rbx));
-}
-
-
-void TemplateTable::wide_aload() {
- transition(vtos, atos);
- locals_index_wide(rbx);
- __ movptr(rax, aaddress(rbx));
-}
-
-void TemplateTable::index_check(Register array, Register index) {
- // Pop ptr into array
- __ pop_ptr(array);
- index_check_without_pop(array, index);
-}
-
-void TemplateTable::index_check_without_pop(Register array, Register index) {
- // destroys rbx,
- // check array
- __ null_check(array, arrayOopDesc::length_offset_in_bytes());
- LP64_ONLY(__ movslq(index, index));
- // check index
- __ cmpl(index, Address(array, arrayOopDesc::length_offset_in_bytes()));
- if (index != rbx) {
- // ??? convention: move aberrant index into rbx, for exception message
- assert(rbx != array, "different registers");
- __ mov(rbx, index);
- }
- __ jump_cc(Assembler::aboveEqual,
- ExternalAddress(Interpreter::_throw_ArrayIndexOutOfBoundsException_entry));
-}
-
-
-void TemplateTable::iaload() {
- transition(itos, itos);
- // rdx: array
- index_check(rdx, rax); // kills rbx,
- // rax,: index
- __ movl(rax, Address(rdx, rax, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_INT)));
-}
-
-
-void TemplateTable::laload() {
- transition(itos, ltos);
- // rax,: index
- // rdx: array
- index_check(rdx, rax);
- __ mov(rbx, rax);
- // rbx,: index
- __ movptr(rax, Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 0 * wordSize));
- NOT_LP64(__ movl(rdx, Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 1 * wordSize)));
-}
-
-
-void TemplateTable::faload() {
- transition(itos, ftos);
- // rdx: array
- index_check(rdx, rax); // kills rbx,
- // rax,: index
- __ fld_s(Address(rdx, rax, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_FLOAT)));
-}
-
-
-void TemplateTable::daload() {
- transition(itos, dtos);
- // rdx: array
- index_check(rdx, rax); // kills rbx,
- // rax,: index
- __ fld_d(Address(rdx, rax, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_DOUBLE)));
-}
-
-
-void TemplateTable::aaload() {
- transition(itos, atos);
- // rdx: array
- index_check(rdx, rax); // kills rbx,
- // rax,: index
- __ movptr(rax, Address(rdx, rax, Address::times_ptr, arrayOopDesc::base_offset_in_bytes(T_OBJECT)));
-}
-
-
-void TemplateTable::baload() {
- transition(itos, itos);
- // rdx: array
- index_check(rdx, rax); // kills rbx,
- // rax,: index
- // can do better code for P5 - fix this at some point
- __ load_signed_byte(rbx, Address(rdx, rax, Address::times_1, arrayOopDesc::base_offset_in_bytes(T_BYTE)));
- __ mov(rax, rbx);
-}
-
-
-void TemplateTable::caload() {
- transition(itos, itos);
- // rdx: array
- index_check(rdx, rax); // kills rbx,
- // rax,: index
- // can do better code for P5 - may want to improve this at some point
- __ load_unsigned_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR)));
- __ mov(rax, rbx);
-}
-
-// iload followed by caload frequent pair
-void TemplateTable::fast_icaload() {
- transition(vtos, itos);
- // load index out of locals
- locals_index(rbx);
- __ movl(rax, iaddress(rbx));
-
- // rdx: array
- index_check(rdx, rax);
- // rax,: index
- __ load_unsigned_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR)));
- __ mov(rax, rbx);
-}
-
-void TemplateTable::saload() {
- transition(itos, itos);
- // rdx: array
- index_check(rdx, rax); // kills rbx,
- // rax,: index
- // can do better code for P5 - may want to improve this at some point
- __ load_signed_short(rbx, Address(rdx, rax, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_SHORT)));
- __ mov(rax, rbx);
-}
-
-
-void TemplateTable::iload(int n) {
- transition(vtos, itos);
- __ movl(rax, iaddress(n));
-}
-
-
-void TemplateTable::lload(int n) {
- transition(vtos, ltos);
- __ movptr(rax, laddress(n));
- NOT_LP64(__ movptr(rdx, haddress(n)));
-}
-
-
-void TemplateTable::fload(int n) {
- transition(vtos, ftos);
- __ fld_s(faddress(n));
-}
-
-
-void TemplateTable::dload(int n) {
- transition(vtos, dtos);
- __ fld_d(daddress(n));
-}
-
-
-void TemplateTable::aload(int n) {
- transition(vtos, atos);
- __ movptr(rax, aaddress(n));
-}
-
-
-void TemplateTable::aload_0() {
- transition(vtos, atos);
- // According to bytecode histograms, the pairs:
- //
- // _aload_0, _fast_igetfield
- // _aload_0, _fast_agetfield
- // _aload_0, _fast_fgetfield
- //
- // occur frequently. If RewriteFrequentPairs is set, the (slow) _aload_0
- // bytecode checks if the next bytecode is either _fast_igetfield,
- // _fast_agetfield or _fast_fgetfield and then rewrites the
- // current bytecode into a pair bytecode; otherwise it rewrites the current
- // bytecode into _fast_aload_0 that doesn't do the pair check anymore.
- //
- // Note: If the next bytecode is _getfield, the rewrite must be delayed,
- // otherwise we may miss an opportunity for a pair.
- //
- // Also rewrite frequent pairs
- // aload_0, aload_1
- // aload_0, iload_1
- // These bytecodes with a small amount of code are most profitable to rewrite
- if (RewriteFrequentPairs) {
- Label rewrite, done;
- // get next byte
- __ load_unsigned_byte(rbx, at_bcp(Bytecodes::length_for(Bytecodes::_aload_0)));
-
- // do actual aload_0
- aload(0);
-
- // if _getfield then wait with rewrite
- __ cmpl(rbx, Bytecodes::_getfield);
- __ jcc(Assembler::equal, done);
-
- // if _igetfield then reqrite to _fast_iaccess_0
- assert(Bytecodes::java_code(Bytecodes::_fast_iaccess_0) == Bytecodes::_aload_0, "fix bytecode definition");
- __ cmpl(rbx, Bytecodes::_fast_igetfield);
- __ movl(rcx, Bytecodes::_fast_iaccess_0);
- __ jccb(Assembler::equal, rewrite);
-
- // if _agetfield then reqrite to _fast_aaccess_0
- assert(Bytecodes::java_code(Bytecodes::_fast_aaccess_0) == Bytecodes::_aload_0, "fix bytecode definition");
- __ cmpl(rbx, Bytecodes::_fast_agetfield);
- __ movl(rcx, Bytecodes::_fast_aaccess_0);
- __ jccb(Assembler::equal, rewrite);
-
- // if _fgetfield then reqrite to _fast_faccess_0
- assert(Bytecodes::java_code(Bytecodes::_fast_faccess_0) == Bytecodes::_aload_0, "fix bytecode definition");
- __ cmpl(rbx, Bytecodes::_fast_fgetfield);
- __ movl(rcx, Bytecodes::_fast_faccess_0);
- __ jccb(Assembler::equal, rewrite);
-
- // else rewrite to _fast_aload0
- assert(Bytecodes::java_code(Bytecodes::_fast_aload_0) == Bytecodes::_aload_0, "fix bytecode definition");
- __ movl(rcx, Bytecodes::_fast_aload_0);
-
- // rewrite
- // rcx: fast bytecode
- __ bind(rewrite);
- patch_bytecode(Bytecodes::_aload_0, rcx, rbx, false);
-
- __ bind(done);
- } else {
- aload(0);
- }
-}
-
-void TemplateTable::istore() {
- transition(itos, vtos);
- locals_index(rbx);
- __ movl(iaddress(rbx), rax);
-}
-
-
-void TemplateTable::lstore() {
- transition(ltos, vtos);
- locals_index(rbx);
- __ movptr(laddress(rbx), rax);
- NOT_LP64(__ movptr(haddress(rbx), rdx));
-}
-
-
-void TemplateTable::fstore() {
- transition(ftos, vtos);
- locals_index(rbx);
- __ fstp_s(faddress(rbx));
-}
-
-
-void TemplateTable::dstore() {
- transition(dtos, vtos);
- locals_index(rbx);
- __ fstp_d(daddress(rbx));
-}
-
-
-void TemplateTable::astore() {
- transition(vtos, vtos);
- __ pop_ptr(rax);
- locals_index(rbx);
- __ movptr(aaddress(rbx), rax);
-}
-
-
-void TemplateTable::wide_istore() {
- transition(vtos, vtos);
- __ pop_i(rax);
- locals_index_wide(rbx);
- __ movl(iaddress(rbx), rax);
-}
-
-
-void TemplateTable::wide_lstore() {
- transition(vtos, vtos);
- __ pop_l(rax, rdx);
- locals_index_wide(rbx);
- __ movptr(laddress(rbx), rax);
- NOT_LP64(__ movl(haddress(rbx), rdx));
-}
-
-
-void TemplateTable::wide_fstore() {
- wide_istore();
-}
-
-
-void TemplateTable::wide_dstore() {
- wide_lstore();
-}
-
-
-void TemplateTable::wide_astore() {
- transition(vtos, vtos);
- __ pop_ptr(rax);
- locals_index_wide(rbx);
- __ movptr(aaddress(rbx), rax);
-}
-
-
-void TemplateTable::iastore() {
- transition(itos, vtos);
- __ pop_i(rbx);
- // rax,: value
- // rdx: array
- index_check(rdx, rbx); // prefer index in rbx,
- // rbx,: index
- __ movl(Address(rdx, rbx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_INT)), rax);
-}
-
-
-void TemplateTable::lastore() {
- transition(ltos, vtos);
- __ pop_i(rbx);
- // rax,: low(value)
- // rcx: array
- // rdx: high(value)
- index_check(rcx, rbx); // prefer index in rbx,
- // rbx,: index
- __ movptr(Address(rcx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 0 * wordSize), rax);
- NOT_LP64(__ movl(Address(rcx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_LONG) + 1 * wordSize), rdx));
-}
-
-
-void TemplateTable::fastore() {
- transition(ftos, vtos);
- __ pop_i(rbx);
- // rdx: array
- // st0: value
- index_check(rdx, rbx); // prefer index in rbx,
- // rbx,: index
- __ fstp_s(Address(rdx, rbx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_FLOAT)));
-}
-
-
-void TemplateTable::dastore() {
- transition(dtos, vtos);
- __ pop_i(rbx);
- // rdx: array
- // st0: value
- index_check(rdx, rbx); // prefer index in rbx,
- // rbx,: index
- __ fstp_d(Address(rdx, rbx, Address::times_8, arrayOopDesc::base_offset_in_bytes(T_DOUBLE)));
-}
-
-
-void TemplateTable::aastore() {
- Label is_null, ok_is_subtype, done;
- transition(vtos, vtos);
- // stack: ..., array, index, value
- __ movptr(rax, at_tos()); // Value
- __ movl(rcx, at_tos_p1()); // Index
- __ movptr(rdx, at_tos_p2()); // Array
-
- Address element_address(rdx, rcx, Address::times_4, arrayOopDesc::base_offset_in_bytes(T_OBJECT));
- index_check_without_pop(rdx, rcx); // kills rbx,
- // do array store check - check for NULL value first
- __ testptr(rax, rax);
- __ jcc(Assembler::zero, is_null);
-
- // Move subklass into EBX
- __ load_klass(rbx, rax);
- // Move superklass into EAX
- __ load_klass(rax, rdx);
- __ movptr(rax, Address(rax, ObjArrayKlass::element_klass_offset()));
- // Compress array+index*wordSize+12 into a single register. Frees ECX.
- __ lea(rdx, element_address);
-
- // Generate subtype check. Blows ECX. Resets EDI to locals.
- // Superklass in EAX. Subklass in EBX.
- __ gen_subtype_check( rbx, ok_is_subtype );
-
- // Come here on failure
- // object is at TOS
- __ jump(ExternalAddress(Interpreter::_throw_ArrayStoreException_entry));
-
- // Come here on success
- __ bind(ok_is_subtype);
-
- // Get the value to store
- __ movptr(rax, at_rsp());
- // and store it with appropriate barrier
- do_oop_store(_masm, Address(rdx, 0), rax, _bs->kind(), true);
-
- __ jmp(done);
-
- // Have a NULL in EAX, EDX=array, ECX=index. Store NULL at ary[idx]
- __ bind(is_null);
- __ profile_null_seen(rbx);
-
- // Store NULL, (noreg means NULL to do_oop_store)
- do_oop_store(_masm, element_address, noreg, _bs->kind(), true);
-
- // Pop stack arguments
- __ bind(done);
- __ addptr(rsp, 3 * Interpreter::stackElementSize);
-}
-
-
-void TemplateTable::bastore() {
- transition(itos, vtos);
- __ pop_i(rbx);
- // rax,: value
- // rdx: array
- index_check(rdx, rbx); // prefer index in rbx,
- // rbx,: index
- __ movb(Address(rdx, rbx, Address::times_1, arrayOopDesc::base_offset_in_bytes(T_BYTE)), rax);
-}
-
-
-void TemplateTable::castore() {
- transition(itos, vtos);
- __ pop_i(rbx);
- // rax,: value
- // rdx: array
- index_check(rdx, rbx); // prefer index in rbx,
- // rbx,: index
- __ movw(Address(rdx, rbx, Address::times_2, arrayOopDesc::base_offset_in_bytes(T_CHAR)), rax);
-}
-
-
-void TemplateTable::sastore() {
- castore();
-}
-
-
-void TemplateTable::istore(int n) {
- transition(itos, vtos);
- __ movl(iaddress(n), rax);
-}
-
-
-void TemplateTable::lstore(int n) {
- transition(ltos, vtos);
- __ movptr(laddress(n), rax);
- NOT_LP64(__ movptr(haddress(n), rdx));
-}
-
-
-void TemplateTable::fstore(int n) {
- transition(ftos, vtos);
- __ fstp_s(faddress(n));
-}
-
-
-void TemplateTable::dstore(int n) {
- transition(dtos, vtos);
- __ fstp_d(daddress(n));
-}
-
-
-void TemplateTable::astore(int n) {
- transition(vtos, vtos);
- __ pop_ptr(rax);
- __ movptr(aaddress(n), rax);
-}
-
-
-void TemplateTable::pop() {
- transition(vtos, vtos);
- __ addptr(rsp, Interpreter::stackElementSize);
-}
-
-
-void TemplateTable::pop2() {
- transition(vtos, vtos);
- __ addptr(rsp, 2*Interpreter::stackElementSize);
-}
-
-
-void TemplateTable::dup() {
- transition(vtos, vtos);
- // stack: ..., a
- __ load_ptr(0, rax);
- __ push_ptr(rax);
- // stack: ..., a, a
-}
-
-
-void TemplateTable::dup_x1() {
- transition(vtos, vtos);
- // stack: ..., a, b
- __ load_ptr( 0, rax); // load b
- __ load_ptr( 1, rcx); // load a
- __ store_ptr(1, rax); // store b
- __ store_ptr(0, rcx); // store a
- __ push_ptr(rax); // push b
- // stack: ..., b, a, b
-}
-
-
-void TemplateTable::dup_x2() {
- transition(vtos, vtos);
- // stack: ..., a, b, c
- __ load_ptr( 0, rax); // load c
- __ load_ptr( 2, rcx); // load a
- __ store_ptr(2, rax); // store c in a
- __ push_ptr(rax); // push c
- // stack: ..., c, b, c, c
- __ load_ptr( 2, rax); // load b
- __ store_ptr(2, rcx); // store a in b
- // stack: ..., c, a, c, c
- __ store_ptr(1, rax); // store b in c
- // stack: ..., c, a, b, c
-}
-
-
-void TemplateTable::dup2() {
- transition(vtos, vtos);
- // stack: ..., a, b
- __ load_ptr(1, rax); // load a
- __ push_ptr(rax); // push a
- __ load_ptr(1, rax); // load b
- __ push_ptr(rax); // push b
- // stack: ..., a, b, a, b
-}
-
-
-void TemplateTable::dup2_x1() {
- transition(vtos, vtos);
- // stack: ..., a, b, c
- __ load_ptr( 0, rcx); // load c
- __ load_ptr( 1, rax); // load b
- __ push_ptr(rax); // push b
- __ push_ptr(rcx); // push c
- // stack: ..., a, b, c, b, c
- __ store_ptr(3, rcx); // store c in b
- // stack: ..., a, c, c, b, c
- __ load_ptr( 4, rcx); // load a
- __ store_ptr(2, rcx); // store a in 2nd c
- // stack: ..., a, c, a, b, c
- __ store_ptr(4, rax); // store b in a
- // stack: ..., b, c, a, b, c
- // stack: ..., b, c, a, b, c
-}
-
-
-void TemplateTable::dup2_x2() {
- transition(vtos, vtos);
- // stack: ..., a, b, c, d
- __ load_ptr( 0, rcx); // load d
- __ load_ptr( 1, rax); // load c
- __ push_ptr(rax); // push c
- __ push_ptr(rcx); // push d
- // stack: ..., a, b, c, d, c, d
- __ load_ptr( 4, rax); // load b
- __ store_ptr(2, rax); // store b in d
- __ store_ptr(4, rcx); // store d in b
- // stack: ..., a, d, c, b, c, d
- __ load_ptr( 5, rcx); // load a
- __ load_ptr( 3, rax); // load c
- __ store_ptr(3, rcx); // store a in c
- __ store_ptr(5, rax); // store c in a
- // stack: ..., c, d, a, b, c, d
- // stack: ..., c, d, a, b, c, d
-}
-
-
-void TemplateTable::swap() {
- transition(vtos, vtos);
- // stack: ..., a, b
- __ load_ptr( 1, rcx); // load a
- __ load_ptr( 0, rax); // load b
- __ store_ptr(0, rcx); // store a in b
- __ store_ptr(1, rax); // store b in a
- // stack: ..., b, a
-}
-
-
-void TemplateTable::iop2(Operation op) {
- transition(itos, itos);
- switch (op) {
- case add : __ pop_i(rdx); __ addl (rax, rdx); break;
- case sub : __ mov(rdx, rax); __ pop_i(rax); __ subl (rax, rdx); break;
- case mul : __ pop_i(rdx); __ imull(rax, rdx); break;
- case _and : __ pop_i(rdx); __ andl (rax, rdx); break;
- case _or : __ pop_i(rdx); __ orl (rax, rdx); break;
- case _xor : __ pop_i(rdx); __ xorl (rax, rdx); break;
- case shl : __ mov(rcx, rax); __ pop_i(rax); __ shll (rax); break; // implicit masking of lower 5 bits by Intel shift instr.
- case shr : __ mov(rcx, rax); __ pop_i(rax); __ sarl (rax); break; // implicit masking of lower 5 bits by Intel shift instr.
- case ushr : __ mov(rcx, rax); __ pop_i(rax); __ shrl (rax); break; // implicit masking of lower 5 bits by Intel shift instr.
- default : ShouldNotReachHere();
- }
-}
-
-
-void TemplateTable::lop2(Operation op) {
- transition(ltos, ltos);
- __ pop_l(rbx, rcx);
- switch (op) {
- case add : __ addl(rax, rbx); __ adcl(rdx, rcx); break;
- case sub : __ subl(rbx, rax); __ sbbl(rcx, rdx);
- __ mov (rax, rbx); __ mov (rdx, rcx); break;
- case _and : __ andl(rax, rbx); __ andl(rdx, rcx); break;
- case _or : __ orl (rax, rbx); __ orl (rdx, rcx); break;
- case _xor : __ xorl(rax, rbx); __ xorl(rdx, rcx); break;
- default : ShouldNotReachHere();
- }
-}
-
-
-void TemplateTable::idiv() {
- transition(itos, itos);
- __ mov(rcx, rax);
- __ pop_i(rax);
- // Note: could xor rax, and rcx and compare with (-1 ^ min_int). If
- // they are not equal, one could do a normal division (no correction
- // needed), which may speed up this implementation for the common case.
- // (see also JVM spec., p.243 & p.271)
- __ corrected_idivl(rcx);
-}
-
-
-void TemplateTable::irem() {
- transition(itos, itos);
- __ mov(rcx, rax);
- __ pop_i(rax);
- // Note: could xor rax, and rcx and compare with (-1 ^ min_int). If
- // they are not equal, one could do a normal division (no correction
- // needed), which may speed up this implementation for the common case.
- // (see also JVM spec., p.243 & p.271)
- __ corrected_idivl(rcx);
- __ mov(rax, rdx);
-}
-
-
-void TemplateTable::lmul() {
- transition(ltos, ltos);
- __ pop_l(rbx, rcx);
- __ push(rcx); __ push(rbx);
- __ push(rdx); __ push(rax);
- __ lmul(2 * wordSize, 0);
- __ addptr(rsp, 4 * wordSize); // take off temporaries
-}
-
-
-void TemplateTable::ldiv() {
- transition(ltos, ltos);
- __ pop_l(rbx, rcx);
- __ push(rcx); __ push(rbx);
- __ push(rdx); __ push(rax);
- // check if y = 0
- __ orl(rax, rdx);
- __ jump_cc(Assembler::zero,
- ExternalAddress(Interpreter::_throw_ArithmeticException_entry));
- __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::ldiv));
- __ addptr(rsp, 4 * wordSize); // take off temporaries
-}
-
-
-void TemplateTable::lrem() {
- transition(ltos, ltos);
- __ pop_l(rbx, rcx);
- __ push(rcx); __ push(rbx);
- __ push(rdx); __ push(rax);
- // check if y = 0
- __ orl(rax, rdx);
- __ jump_cc(Assembler::zero,
- ExternalAddress(Interpreter::_throw_ArithmeticException_entry));
- __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::lrem));
- __ addptr(rsp, 4 * wordSize);
-}
-
-
-void TemplateTable::lshl() {
- transition(itos, ltos);
- __ movl(rcx, rax); // get shift count
- __ pop_l(rax, rdx); // get shift value
- __ lshl(rdx, rax);
-}
-
-
-void TemplateTable::lshr() {
- transition(itos, ltos);
- __ mov(rcx, rax); // get shift count
- __ pop_l(rax, rdx); // get shift value
- __ lshr(rdx, rax, true);
-}
-
-
-void TemplateTable::lushr() {
- transition(itos, ltos);
- __ mov(rcx, rax); // get shift count
- __ pop_l(rax, rdx); // get shift value
- __ lshr(rdx, rax);
-}
-
-
-void TemplateTable::fop2(Operation op) {
- transition(ftos, ftos);
- switch (op) {
- case add: __ fadd_s (at_rsp()); break;
- case sub: __ fsubr_s(at_rsp()); break;
- case mul: __ fmul_s (at_rsp()); break;
- case div: __ fdivr_s(at_rsp()); break;
- case rem: __ fld_s (at_rsp()); __ fremr(rax); break;
- default : ShouldNotReachHere();
- }
- __ f2ieee();
- __ pop(rax); // pop float thing off
-}
-
-
-void TemplateTable::dop2(Operation op) {
- transition(dtos, dtos);
-
- switch (op) {
- case add: __ fadd_d (at_rsp()); break;
- case sub: __ fsubr_d(at_rsp()); break;
- case mul: {
- Label L_strict;
- Label L_join;
- const Address access_flags (rcx, Method::access_flags_offset());
- __ get_method(rcx);
- __ movl(rcx, access_flags);
- __ testl(rcx, JVM_ACC_STRICT);
- __ jccb(Assembler::notZero, L_strict);
- __ fmul_d (at_rsp());
- __ jmpb(L_join);
- __ bind(L_strict);
- __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1()));
- __ fmulp();
- __ fmul_d (at_rsp());
- __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2()));
- __ fmulp();
- __ bind(L_join);
- break;
- }
- case div: {
- Label L_strict;
- Label L_join;
- const Address access_flags (rcx, Method::access_flags_offset());
- __ get_method(rcx);
- __ movl(rcx, access_flags);
- __ testl(rcx, JVM_ACC_STRICT);
- __ jccb(Assembler::notZero, L_strict);
- __ fdivr_d(at_rsp());
- __ jmp(L_join);
- __ bind(L_strict);
- __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias1()));
- __ fmul_d (at_rsp());
- __ fdivrp();
- __ fld_x(ExternalAddress(StubRoutines::addr_fpu_subnormal_bias2()));
- __ fmulp();
- __ bind(L_join);
- break;
- }
- case rem: __ fld_d (at_rsp()); __ fremr(rax); break;
- default : ShouldNotReachHere();
- }
- __ d2ieee();
- // Pop double precision number from rsp.
- __ pop(rax);
- __ pop(rdx);
-}
-
-
-void TemplateTable::ineg() {
- transition(itos, itos);
- __ negl(rax);
-}
-
-
-void TemplateTable::lneg() {
- transition(ltos, ltos);
- __ lneg(rdx, rax);
-}
-
-
-void TemplateTable::fneg() {
- transition(ftos, ftos);
- __ fchs();
-}
-
-
-void TemplateTable::dneg() {
- transition(dtos, dtos);
- __ fchs();
-}
-
-
-void TemplateTable::iinc() {
- transition(vtos, vtos);
- __ load_signed_byte(rdx, at_bcp(2)); // get constant
- locals_index(rbx);
- __ addl(iaddress(rbx), rdx);
-}
-
-
-void TemplateTable::wide_iinc() {
- transition(vtos, vtos);
- __ movl(rdx, at_bcp(4)); // get constant
- locals_index_wide(rbx);
- __ bswapl(rdx); // swap bytes & sign-extend constant
- __ sarl(rdx, 16);
- __ addl(iaddress(rbx), rdx);
- // Note: should probably use only one movl to get both
- // the index and the constant -> fix this
-}
-
-
-void TemplateTable::convert() {
- // Checking
-#ifdef ASSERT
- { TosState tos_in = ilgl;
- TosState tos_out = ilgl;
- switch (bytecode()) {
- case Bytecodes::_i2l: // fall through
- case Bytecodes::_i2f: // fall through
- case Bytecodes::_i2d: // fall through
- case Bytecodes::_i2b: // fall through
- case Bytecodes::_i2c: // fall through
- case Bytecodes::_i2s: tos_in = itos; break;
- case Bytecodes::_l2i: // fall through
- case Bytecodes::_l2f: // fall through
- case Bytecodes::_l2d: tos_in = ltos; break;
- case Bytecodes::_f2i: // fall through
- case Bytecodes::_f2l: // fall through
- case Bytecodes::_f2d: tos_in = ftos; break;
- case Bytecodes::_d2i: // fall through
- case Bytecodes::_d2l: // fall through
- case Bytecodes::_d2f: tos_in = dtos; break;
- default : ShouldNotReachHere();
- }
- switch (bytecode()) {
- case Bytecodes::_l2i: // fall through
- case Bytecodes::_f2i: // fall through
- case Bytecodes::_d2i: // fall through
- case Bytecodes::_i2b: // fall through
- case Bytecodes::_i2c: // fall through
- case Bytecodes::_i2s: tos_out = itos; break;
- case Bytecodes::_i2l: // fall through
- case Bytecodes::_f2l: // fall through
- case Bytecodes::_d2l: tos_out = ltos; break;
- case Bytecodes::_i2f: // fall through
- case Bytecodes::_l2f: // fall through
- case Bytecodes::_d2f: tos_out = ftos; break;
- case Bytecodes::_i2d: // fall through
- case Bytecodes::_l2d: // fall through
- case Bytecodes::_f2d: tos_out = dtos; break;
- default : ShouldNotReachHere();
- }
- transition(tos_in, tos_out);
- }
-#endif // ASSERT
-
- // Conversion
- // (Note: use push(rcx)/pop(rcx) for 1/2-word stack-ptr manipulation)
- switch (bytecode()) {
- case Bytecodes::_i2l:
- __ extend_sign(rdx, rax);
- break;
- case Bytecodes::_i2f:
- __ push(rax); // store int on tos
- __ fild_s(at_rsp()); // load int to ST0
- __ f2ieee(); // truncate to float size
- __ pop(rcx); // adjust rsp
- break;
- case Bytecodes::_i2d:
- __ push(rax); // add one slot for d2ieee()
- __ push(rax); // store int on tos
- __ fild_s(at_rsp()); // load int to ST0
- __ d2ieee(); // truncate to double size
- __ pop(rcx); // adjust rsp
- __ pop(rcx);
- break;
- case Bytecodes::_i2b:
- __ shll(rax, 24); // truncate upper 24 bits
- __ sarl(rax, 24); // and sign-extend byte
- LP64_ONLY(__ movsbl(rax, rax));
- break;
- case Bytecodes::_i2c:
- __ andl(rax, 0xFFFF); // truncate upper 16 bits
- LP64_ONLY(__ movzwl(rax, rax));
- break;
- case Bytecodes::_i2s:
- __ shll(rax, 16); // truncate upper 16 bits
- __ sarl(rax, 16); // and sign-extend short
- LP64_ONLY(__ movswl(rax, rax));
- break;
- case Bytecodes::_l2i:
- /* nothing to do */
- break;
- case Bytecodes::_l2f:
- __ push(rdx); // store long on tos
- __ push(rax);
- __ fild_d(at_rsp()); // load long to ST0
- __ f2ieee(); // truncate to float size
- __ pop(rcx); // adjust rsp
- __ pop(rcx);
- break;
- case Bytecodes::_l2d:
- __ push(rdx); // store long on tos
- __ push(rax);
- __ fild_d(at_rsp()); // load long to ST0
- __ d2ieee(); // truncate to double size
- __ pop(rcx); // adjust rsp
- __ pop(rcx);
- break;
- case Bytecodes::_f2i:
- __ push(rcx); // reserve space for argument
- __ fstp_s(at_rsp()); // pass float argument on stack
- __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2i), 1);
- break;
- case Bytecodes::_f2l:
- __ push(rcx); // reserve space for argument
- __ fstp_s(at_rsp()); // pass float argument on stack
- __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2l), 1);
- break;
- case Bytecodes::_f2d:
- /* nothing to do */
- break;
- case Bytecodes::_d2i:
- __ push(rcx); // reserve space for argument
- __ push(rcx);
- __ fstp_d(at_rsp()); // pass double argument on stack
- __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2i), 2);
- break;
- case Bytecodes::_d2l:
- __ push(rcx); // reserve space for argument
- __ push(rcx);
- __ fstp_d(at_rsp()); // pass double argument on stack
- __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2l), 2);
- break;
- case Bytecodes::_d2f:
- __ push(rcx); // reserve space for f2ieee()
- __ f2ieee(); // truncate to float size
- __ pop(rcx); // adjust rsp
- break;
- default :
- ShouldNotReachHere();
- }
-}
-
-
-void TemplateTable::lcmp() {
- transition(ltos, itos);
- // y = rdx:rax
- __ pop_l(rbx, rcx); // get x = rcx:rbx
- __ lcmp2int(rcx, rbx, rdx, rax);// rcx := cmp(x, y)
- __ mov(rax, rcx);
-}
-
-
-void TemplateTable::float_cmp(bool is_float, int unordered_result) {
- if (is_float) {
- __ fld_s(at_rsp());
- } else {
- __ fld_d(at_rsp());
- __ pop(rdx);
- }
- __ pop(rcx);
- __ fcmp2int(rax, unordered_result < 0);
-}
-
-
-void TemplateTable::branch(bool is_jsr, bool is_wide) {
- __ get_method(rcx); // ECX holds method
- __ profile_taken_branch(rax,rbx); // EAX holds updated MDP, EBX holds bumped taken count
-
- const ByteSize be_offset = MethodCounters::backedge_counter_offset() +
- InvocationCounter::counter_offset();
- const ByteSize inv_offset = MethodCounters::invocation_counter_offset() +
- InvocationCounter::counter_offset();
-
- // Load up EDX with the branch displacement
- if (is_wide) {
- __ movl(rdx, at_bcp(1));
- } else {
- __ load_signed_short(rdx, at_bcp(1));
- }
- __ bswapl(rdx);
- if (!is_wide) __ sarl(rdx, 16);
- LP64_ONLY(__ movslq(rdx, rdx));
-
-
- // Handle all the JSR stuff here, then exit.
- // It's much shorter and cleaner than intermingling with the
- // non-JSR normal-branch stuff occurring below.
- if (is_jsr) {
- // Pre-load the next target bytecode into EBX
- __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1, 0));
-
- // compute return address as bci in rax,
- __ lea(rax, at_bcp((is_wide ? 5 : 3) - in_bytes(ConstMethod::codes_offset())));
- __ subptr(rax, Address(rcx, Method::const_offset()));
- // Adjust the bcp in RSI by the displacement in EDX
- __ addptr(rsi, rdx);
- // Push return address
- __ push_i(rax);
- // jsr returns vtos
- __ dispatch_only_noverify(vtos);
- return;
- }
-
- // Normal (non-jsr) branch handling
-
- // Adjust the bcp in RSI by the displacement in EDX
- __ addptr(rsi, rdx);
-
- assert(UseLoopCounter || !UseOnStackReplacement, "on-stack-replacement requires loop counters");
- Label backedge_counter_overflow;
- Label profile_method;
- Label dispatch;
- if (UseLoopCounter) {
- // increment backedge counter for backward branches
- // rax,: MDO
- // rbx,: MDO bumped taken-count
- // rcx: method
- // rdx: target offset
- // rsi: target bcp
- // rdi: locals pointer
- __ testl(rdx, rdx); // check if forward or backward branch
- __ jcc(Assembler::positive, dispatch); // count only if backward branch
-
- // check if MethodCounters exists
- Label has_counters;
- __ movptr(rax, Address(rcx, Method::method_counters_offset()));
- __ testptr(rax, rax);
- __ jcc(Assembler::notZero, has_counters);
- __ push(rdx);
- __ push(rcx);
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::build_method_counters),
- rcx);
- __ pop(rcx);
- __ pop(rdx);
- __ movptr(rax, Address(rcx, Method::method_counters_offset()));
- __ testptr(rax, rax);
- __ jcc(Assembler::zero, dispatch);
- __ bind(has_counters);
-
- if (TieredCompilation) {
- Label no_mdo;
- int increment = InvocationCounter::count_increment;
- if (ProfileInterpreter) {
- // Are we profiling?
- __ movptr(rbx, Address(rcx, in_bytes(Method::method_data_offset())));
- __ testptr(rbx, rbx);
- __ jccb(Assembler::zero, no_mdo);
- // Increment the MDO backedge counter
- const Address mdo_backedge_counter(rbx, in_bytes(MethodData::backedge_counter_offset()) +
- in_bytes(InvocationCounter::counter_offset()));
- const Address mask(rbx, in_bytes(MethodData::backedge_mask_offset()));
- __ increment_mask_and_jump(mdo_backedge_counter, increment, mask,
- rax, false, Assembler::zero, &backedge_counter_overflow);
- __ jmp(dispatch);
- }
- __ bind(no_mdo);
- // Increment backedge counter in MethodCounters*
- __ movptr(rcx, Address(rcx, Method::method_counters_offset()));
- const Address mask(rcx, in_bytes(MethodCounters::backedge_mask_offset()));
- __ increment_mask_and_jump(Address(rcx, be_offset), increment, mask,
- rax, false, Assembler::zero, &backedge_counter_overflow);
- } else { // not TieredCompilation
- // increment counter
- __ movptr(rcx, Address(rcx, Method::method_counters_offset()));
- __ movl(rax, Address(rcx, be_offset)); // load backedge counter
- __ incrementl(rax, InvocationCounter::count_increment); // increment counter
- __ movl(Address(rcx, be_offset), rax); // store counter
-
- __ movl(rax, Address(rcx, inv_offset)); // load invocation counter
-
- __ andl(rax, InvocationCounter::count_mask_value); // and the status bits
- __ addl(rax, Address(rcx, be_offset)); // add both counters
-
- if (ProfileInterpreter) {
- // Test to see if we should create a method data oop
- __ cmp32(rax, Address(rcx, in_bytes(MethodCounters::interpreter_profile_limit_offset())));
- __ jcc(Assembler::less, dispatch);
-
- // if no method data exists, go to profile method
- __ test_method_data_pointer(rax, profile_method);
-
- if (UseOnStackReplacement) {
- // check for overflow against rbx, which is the MDO taken count
- __ cmp32(rbx, Address(rcx, in_bytes(MethodCounters::interpreter_backward_branch_limit_offset())));
- __ jcc(Assembler::below, dispatch);
-
- // When ProfileInterpreter is on, the backedge_count comes from the
- // MethodData*, which value does not get reset on the call to
- // frequency_counter_overflow(). To avoid excessive calls to the overflow
- // routine while the method is being compiled, add a second test to make
- // sure the overflow function is called only once every overflow_frequency.
- const int overflow_frequency = 1024;
- __ andptr(rbx, overflow_frequency-1);
- __ jcc(Assembler::zero, backedge_counter_overflow);
- }
- } else {
- if (UseOnStackReplacement) {
- // check for overflow against rax, which is the sum of the counters
- __ cmp32(rax, Address(rcx, in_bytes(MethodCounters::interpreter_backward_branch_limit_offset())));
- __ jcc(Assembler::aboveEqual, backedge_counter_overflow);
-
- }
- }
- }
- __ bind(dispatch);
- }
-
- // Pre-load the next target bytecode into EBX
- __ load_unsigned_byte(rbx, Address(rsi, 0));
-
- // continue with the bytecode @ target
- // rax,: return bci for jsr's, unused otherwise
- // rbx,: target bytecode
- // rsi: target bcp
- __ dispatch_only(vtos);
-
- if (UseLoopCounter) {
- if (ProfileInterpreter) {
- // Out-of-line code to allocate method data oop.
- __ bind(profile_method);
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method));
- __ load_unsigned_byte(rbx, Address(rsi, 0)); // restore target bytecode
- __ set_method_data_pointer_for_bcp();
- __ jmp(dispatch);
- }
-
- if (UseOnStackReplacement) {
-
- // invocation counter overflow
- __ bind(backedge_counter_overflow);
- __ negptr(rdx);
- __ addptr(rdx, rsi); // branch bcp
- call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::frequency_counter_overflow), rdx);
- __ load_unsigned_byte(rbx, Address(rsi, 0)); // restore target bytecode
-
- // rax,: osr nmethod (osr ok) or NULL (osr not possible)
- // rbx,: target bytecode
- // rdx: scratch
- // rdi: locals pointer
- // rsi: bcp
- __ testptr(rax, rax); // test result
- __ jcc(Assembler::zero, dispatch); // no osr if null
- // nmethod may have been invalidated (VM may block upon call_VM return)
- __ cmpb(Address(rax, nmethod::state_offset()), nmethod::in_use);
- __ jcc(Assembler::notEqual, dispatch);
-
- // We have the address of an on stack replacement routine in rax,
- // We need to prepare to execute the OSR method. First we must
- // migrate the locals and monitors off of the stack.
-
- __ mov(rbx, rax); // save the nmethod
-
- __ get_thread(rcx);
- call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin));
- // rax, is OSR buffer, move it to expected parameter location
- __ mov(rcx, rax);
-
- // pop the interpreter frame
- __ movptr(rdx, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp
- __ leave(); // remove frame anchor
- __ pop(rdi); // get return address
- __ mov(rsp, rdx); // set sp to sender sp
-
- // Align stack pointer for compiled code (note that caller is
- // responsible for undoing this fixup by remembering the old SP
- // in an rbp,-relative location)
- __ andptr(rsp, -(StackAlignmentInBytes));
-
- // push the (possibly adjusted) return address
- __ push(rdi);
-
- // and begin the OSR nmethod
- __ jmp(Address(rbx, nmethod::osr_entry_point_offset()));
- }
- }
-}
-
-
-void TemplateTable::if_0cmp(Condition cc) {
- transition(itos, vtos);
- // assume branch is more often taken than not (loops use backward branches)
- Label not_taken;
- __ testl(rax, rax);
- __ jcc(j_not(cc), not_taken);
- branch(false, false);
- __ bind(not_taken);
- __ profile_not_taken_branch(rax);
-}
-
-
-void TemplateTable::if_icmp(Condition cc) {
- transition(itos, vtos);
- // assume branch is more often taken than not (loops use backward branches)
- Label not_taken;
- __ pop_i(rdx);
- __ cmpl(rdx, rax);
- __ jcc(j_not(cc), not_taken);
- branch(false, false);
- __ bind(not_taken);
- __ profile_not_taken_branch(rax);
-}
-
-
-void TemplateTable::if_nullcmp(Condition cc) {
- transition(atos, vtos);
- // assume branch is more often taken than not (loops use backward branches)
- Label not_taken;
- __ testptr(rax, rax);
- __ jcc(j_not(cc), not_taken);
- branch(false, false);
- __ bind(not_taken);
- __ profile_not_taken_branch(rax);
-}
-
-
-void TemplateTable::if_acmp(Condition cc) {
- transition(atos, vtos);
- // assume branch is more often taken than not (loops use backward branches)
- Label not_taken;
- __ pop_ptr(rdx);
- __ cmpptr(rdx, rax);
- __ jcc(j_not(cc), not_taken);
- branch(false, false);
- __ bind(not_taken);
- __ profile_not_taken_branch(rax);
-}
-
-
-void TemplateTable::ret() {
- transition(vtos, vtos);
- locals_index(rbx);
- __ movptr(rbx, iaddress(rbx)); // get return bci, compute return bcp
- __ profile_ret(rbx, rcx);
- __ get_method(rax);
- __ movptr(rsi, Address(rax, Method::const_offset()));
- __ lea(rsi, Address(rsi, rbx, Address::times_1,
- ConstMethod::codes_offset()));
- __ dispatch_next(vtos);
-}
-
-
-void TemplateTable::wide_ret() {
- transition(vtos, vtos);
- locals_index_wide(rbx);
- __ movptr(rbx, iaddress(rbx)); // get return bci, compute return bcp
- __ profile_ret(rbx, rcx);
- __ get_method(rax);
- __ movptr(rsi, Address(rax, Method::const_offset()));
- __ lea(rsi, Address(rsi, rbx, Address::times_1, ConstMethod::codes_offset()));
- __ dispatch_next(vtos);
-}
-
-
-void TemplateTable::tableswitch() {
- Label default_case, continue_execution;
- transition(itos, vtos);
- // align rsi
- __ lea(rbx, at_bcp(wordSize));
- __ andptr(rbx, -wordSize);
- // load lo & hi
- __ movl(rcx, Address(rbx, 1 * wordSize));
- __ movl(rdx, Address(rbx, 2 * wordSize));
- __ bswapl(rcx);
- __ bswapl(rdx);
- // check against lo & hi
- __ cmpl(rax, rcx);
- __ jccb(Assembler::less, default_case);
- __ cmpl(rax, rdx);
- __ jccb(Assembler::greater, default_case);
- // lookup dispatch offset
- __ subl(rax, rcx);
- __ movl(rdx, Address(rbx, rax, Address::times_4, 3 * BytesPerInt));
- __ profile_switch_case(rax, rbx, rcx);
- // continue execution
- __ bind(continue_execution);
- __ bswapl(rdx);
- __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1));
- __ addptr(rsi, rdx);
- __ dispatch_only(vtos);
- // handle default
- __ bind(default_case);
- __ profile_switch_default(rax);
- __ movl(rdx, Address(rbx, 0));
- __ jmp(continue_execution);
-}
-
-
-void TemplateTable::lookupswitch() {
- transition(itos, itos);
- __ stop("lookupswitch bytecode should have been rewritten");
-}
-
-
-void TemplateTable::fast_linearswitch() {
- transition(itos, vtos);
- Label loop_entry, loop, found, continue_execution;
- // bswapl rax, so we can avoid bswapping the table entries
- __ bswapl(rax);
- // align rsi
- __ lea(rbx, at_bcp(wordSize)); // btw: should be able to get rid of this instruction (change offsets below)
- __ andptr(rbx, -wordSize);
- // set counter
- __ movl(rcx, Address(rbx, wordSize));
- __ bswapl(rcx);
- __ jmpb(loop_entry);
- // table search
- __ bind(loop);
- __ cmpl(rax, Address(rbx, rcx, Address::times_8, 2 * wordSize));
- __ jccb(Assembler::equal, found);
- __ bind(loop_entry);
- __ decrementl(rcx);
- __ jcc(Assembler::greaterEqual, loop);
- // default case
- __ profile_switch_default(rax);
- __ movl(rdx, Address(rbx, 0));
- __ jmpb(continue_execution);
- // entry found -> get offset
- __ bind(found);
- __ movl(rdx, Address(rbx, rcx, Address::times_8, 3 * wordSize));
- __ profile_switch_case(rcx, rax, rbx);
- // continue execution
- __ bind(continue_execution);
- __ bswapl(rdx);
- __ load_unsigned_byte(rbx, Address(rsi, rdx, Address::times_1));
- __ addptr(rsi, rdx);
- __ dispatch_only(vtos);
-}
-
-
-void TemplateTable::fast_binaryswitch() {
- transition(itos, vtos);
- // Implementation using the following core algorithm:
- //
- // int binary_search(int key, LookupswitchPair* array, int n) {
- // // Binary search according to "Methodik des Programmierens" by
- // // Edsger W. Dijkstra and W.H.J. Feijen, Addison Wesley Germany 1985.
- // int i = 0;
- // int j = n;
- // while (i+1 < j) {
- // // invariant P: 0 <= i < j <= n and (a[i] <= key < a[j] or Q)
- // // with Q: for all i: 0 <= i < n: key < a[i]
- // // where a stands for the array and assuming that the (inexisting)
- // // element a[n] is infinitely big.
- // int h = (i + j) >> 1;
- // // i < h < j
- // if (key < array[h].fast_match()) {
- // j = h;
- // } else {
- // i = h;
- // }
- // }
- // // R: a[i] <= key < a[i+1] or Q
- // // (i.e., if key is within array, i is the correct index)
- // return i;
- // }
-
- // register allocation
- const Register key = rax; // already set (tosca)
- const Register array = rbx;
- const Register i = rcx;
- const Register j = rdx;
- const Register h = rdi; // needs to be restored
- const Register temp = rsi;
- // setup array
- __ save_bcp();
-
- __ lea(array, at_bcp(3*wordSize)); // btw: should be able to get rid of this instruction (change offsets below)
- __ andptr(array, -wordSize);
- // initialize i & j
- __ xorl(i, i); // i = 0;
- __ movl(j, Address(array, -wordSize)); // j = length(array);
- // Convert j into native byteordering
- __ bswapl(j);
- // and start
- Label entry;
- __ jmp(entry);
-
- // binary search loop
- { Label loop;
- __ bind(loop);
- // int h = (i + j) >> 1;
- __ leal(h, Address(i, j, Address::times_1)); // h = i + j;
- __ sarl(h, 1); // h = (i + j) >> 1;
- // if (key < array[h].fast_match()) {
- // j = h;
- // } else {
- // i = h;
- // }
- // Convert array[h].match to native byte-ordering before compare
- __ movl(temp, Address(array, h, Address::times_8, 0*wordSize));
- __ bswapl(temp);
- __ cmpl(key, temp);
- // j = h if (key < array[h].fast_match())
- __ cmov32(Assembler::less , j, h);
- // i = h if (key >= array[h].fast_match())
- __ cmov32(Assembler::greaterEqual, i, h);
- // while (i+1 < j)
- __ bind(entry);
- __ leal(h, Address(i, 1)); // i+1
- __ cmpl(h, j); // i+1 < j
- __ jcc(Assembler::less, loop);
- }
-
- // end of binary search, result index is i (must check again!)
- Label default_case;
- // Convert array[i].match to native byte-ordering before compare
- __ movl(temp, Address(array, i, Address::times_8, 0*wordSize));
- __ bswapl(temp);
- __ cmpl(key, temp);
- __ jcc(Assembler::notEqual, default_case);
-
- // entry found -> j = offset
- __ movl(j , Address(array, i, Address::times_8, 1*wordSize));
- __ profile_switch_case(i, key, array);
- __ bswapl(j);
- LP64_ONLY(__ movslq(j, j));
- __ restore_bcp();
- __ restore_locals(); // restore rdi
- __ load_unsigned_byte(rbx, Address(rsi, j, Address::times_1));
-
- __ addptr(rsi, j);
- __ dispatch_only(vtos);
-
- // default case -> j = default offset
- __ bind(default_case);
- __ profile_switch_default(i);
- __ movl(j, Address(array, -2*wordSize));
- __ bswapl(j);
- LP64_ONLY(__ movslq(j, j));
- __ restore_bcp();
- __ restore_locals(); // restore rdi
- __ load_unsigned_byte(rbx, Address(rsi, j, Address::times_1));
- __ addptr(rsi, j);
- __ dispatch_only(vtos);
-}
-
-
-void TemplateTable::_return(TosState state) {
- transition(state, state);
- assert(_desc->calls_vm(), "inconsistent calls_vm information"); // call in remove_activation
-
- if (_desc->bytecode() == Bytecodes::_return_register_finalizer) {
- assert(state == vtos, "only valid state");
- __ movptr(rax, aaddress(0));
- __ load_klass(rdi, rax);
- __ movl(rdi, Address(rdi, Klass::access_flags_offset()));
- __ testl(rdi, JVM_ACC_HAS_FINALIZER);
- Label skip_register_finalizer;
- __ jcc(Assembler::zero, skip_register_finalizer);
-
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), rax);
-
- __ bind(skip_register_finalizer);
- }
-
- __ remove_activation(state, rsi);
- __ jmp(rsi);
-}
-
-
-// ----------------------------------------------------------------------------
-// Volatile variables demand their effects be made known to all CPU's in
-// order. Store buffers on most chips allow reads & writes to reorder; the
-// JMM's ReadAfterWrite.java test fails in -Xint mode without some kind of
-// memory barrier (i.e., it's not sufficient that the interpreter does not
-// reorder volatile references, the hardware also must not reorder them).
-//
-// According to the new Java Memory Model (JMM):
-// (1) All volatiles are serialized wrt to each other.
-// ALSO reads & writes act as aquire & release, so:
-// (2) A read cannot let unrelated NON-volatile memory refs that happen after
-// the read float up to before the read. It's OK for non-volatile memory refs
-// that happen before the volatile read to float down below it.
-// (3) Similar a volatile write cannot let unrelated NON-volatile memory refs
-// that happen BEFORE the write float down to after the write. It's OK for
-// non-volatile memory refs that happen after the volatile write to float up
-// before it.
-//
-// We only put in barriers around volatile refs (they are expensive), not
-// _between_ memory refs (that would require us to track the flavor of the
-// previous memory refs). Requirements (2) and (3) require some barriers
-// before volatile stores and after volatile loads. These nearly cover
-// requirement (1) but miss the volatile-store-volatile-load case. This final
-// case is placed after volatile-stores although it could just as well go
-// before volatile-loads.
-void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits order_constraint ) {
- // Helper function to insert a is-volatile test and memory barrier
- if( !os::is_MP() ) return; // Not needed on single CPU
- __ membar(order_constraint);
-}
-
-void TemplateTable::resolve_cache_and_index(int byte_no,
- Register Rcache,
- Register index,
- size_t index_size) {
- const Register temp = rbx;
- assert_different_registers(Rcache, index, temp);
-
- Label resolved;
- assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range");
- __ get_cache_and_index_and_bytecode_at_bcp(Rcache, index, temp, byte_no, 1, index_size);
- __ cmpl(temp, (int) bytecode()); // have we resolved this bytecode?
- __ jcc(Assembler::equal, resolved);
-
- // resolve first time through
- address entry;
- switch (bytecode()) {
- case Bytecodes::_getstatic : // fall through
- case Bytecodes::_putstatic : // fall through
- case Bytecodes::_getfield : // fall through
- case Bytecodes::_putfield : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_get_put); break;
- case Bytecodes::_invokevirtual : // fall through
- case Bytecodes::_invokespecial : // fall through
- case Bytecodes::_invokestatic : // fall through
- case Bytecodes::_invokeinterface: entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invoke); break;
- case Bytecodes::_invokehandle : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokehandle); break;
- case Bytecodes::_invokedynamic : entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokedynamic); break;
- default:
- fatal(err_msg("unexpected bytecode: %s", Bytecodes::name(bytecode())));
- break;
- }
- __ movl(temp, (int)bytecode());
- __ call_VM(noreg, entry, temp);
- // Update registers with resolved info
- __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size);
- __ bind(resolved);
-}
-
-
-// The cache and index registers must be set before call
-void TemplateTable::load_field_cp_cache_entry(Register obj,
- Register cache,
- Register index,
- Register off,
- Register flags,
- bool is_static = false) {
- assert_different_registers(cache, index, flags, off);
-
- ByteSize cp_base_offset = ConstantPoolCache::base_offset();
- // Field offset
- __ movptr(off, Address(cache, index, Address::times_ptr,
- in_bytes(cp_base_offset + ConstantPoolCacheEntry::f2_offset())));
- // Flags
- __ movl(flags, Address(cache, index, Address::times_ptr,
- in_bytes(cp_base_offset + ConstantPoolCacheEntry::flags_offset())));
-
- // klass overwrite register
- if (is_static) {
- __ movptr(obj, Address(cache, index, Address::times_ptr,
- in_bytes(cp_base_offset + ConstantPoolCacheEntry::f1_offset())));
- const int mirror_offset = in_bytes(Klass::java_mirror_offset());
- __ movptr(obj, Address(obj, mirror_offset));
- }
-}
-
-void TemplateTable::load_invoke_cp_cache_entry(int byte_no,
- Register method,
- Register itable_index,
- Register flags,
- bool is_invokevirtual,
- bool is_invokevfinal, /*unused*/
- bool is_invokedynamic) {
- // setup registers
- const Register cache = rcx;
- const Register index = rdx;
- assert_different_registers(method, flags);
- assert_different_registers(method, cache, index);
- assert_different_registers(itable_index, flags);
- assert_different_registers(itable_index, cache, index);
- // determine constant pool cache field offsets
- assert(is_invokevirtual == (byte_no == f2_byte), "is_invokevirtual flag redundant");
- const int method_offset = in_bytes(
- ConstantPoolCache::base_offset() +
- ((byte_no == f2_byte)
- ? ConstantPoolCacheEntry::f2_offset()
- : ConstantPoolCacheEntry::f1_offset()));
- const int flags_offset = in_bytes(ConstantPoolCache::base_offset() +
- ConstantPoolCacheEntry::flags_offset());
- // access constant pool cache fields
- const int index_offset = in_bytes(ConstantPoolCache::base_offset() +
- ConstantPoolCacheEntry::f2_offset());
-
- size_t index_size = (is_invokedynamic ? sizeof(u4) : sizeof(u2));
- resolve_cache_and_index(byte_no, cache, index, index_size);
- __ movptr(method, Address(cache, index, Address::times_ptr, method_offset));
-
- if (itable_index != noreg) {
- __ movptr(itable_index, Address(cache, index, Address::times_ptr, index_offset));
- }
- __ movl(flags, Address(cache, index, Address::times_ptr, flags_offset));
-}
-
-
-// The registers cache and index expected to be set before call.
-// Correct values of the cache and index registers are preserved.
-void TemplateTable::jvmti_post_field_access(Register cache,
- Register index,
- bool is_static,
- bool has_tos) {
- if (JvmtiExport::can_post_field_access()) {
- // Check to see if a field access watch has been set before we take
- // the time to call into the VM.
- Label L1;
- assert_different_registers(cache, index, rax);
- __ mov32(rax, ExternalAddress((address) JvmtiExport::get_field_access_count_addr()));
- __ testl(rax,rax);
- __ jcc(Assembler::zero, L1);
-
- // cache entry pointer
- __ addptr(cache, in_bytes(ConstantPoolCache::base_offset()));
- __ shll(index, LogBytesPerWord);
- __ addptr(cache, index);
- if (is_static) {
- __ xorptr(rax, rax); // NULL object reference
- } else {
- __ pop(atos); // Get the object
- __ verify_oop(rax);
- __ push(atos); // Restore stack state
- }
- // rax,: object pointer or NULL
- // cache: cache entry pointer
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access),
- rax, cache);
- __ get_cache_and_index_at_bcp(cache, index, 1);
- __ bind(L1);
- }
-}
-
-void TemplateTable::pop_and_check_object(Register r) {
- __ pop_ptr(r);
- __ null_check(r); // for field access must check obj.
- __ verify_oop(r);
-}
-
-void TemplateTable::getfield_or_static(int byte_no, bool is_static) {
- transition(vtos, vtos);
-
- const Register cache = rcx;
- const Register index = rdx;
- const Register obj = rcx;
- const Register off = rbx;
- const Register flags = rax;
-
- resolve_cache_and_index(byte_no, cache, index, sizeof(u2));
- jvmti_post_field_access(cache, index, is_static, false);
- load_field_cp_cache_entry(obj, cache, index, off, flags, is_static);
-
- if (!is_static) pop_and_check_object(obj);
-
- const Address lo(obj, off, Address::times_1, 0*wordSize);
- const Address hi(obj, off, Address::times_1, 1*wordSize);
-
- Label Done, notByte, notInt, notShort, notChar, notLong, notFloat, notObj, notDouble;
-
- __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift);
- assert(btos == 0, "change code, btos != 0");
- // btos
- __ andptr(flags, ConstantPoolCacheEntry::tos_state_mask);
- __ jcc(Assembler::notZero, notByte);
-
- __ load_signed_byte(rax, lo );
- __ push(btos);
- // Rewrite bytecode to be faster
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_bgetfield, rcx, rbx);
- }
- __ jmp(Done);
-
- __ bind(notByte);
- // itos
- __ cmpl(flags, itos );
- __ jcc(Assembler::notEqual, notInt);
-
- __ movl(rax, lo );
- __ push(itos);
- // Rewrite bytecode to be faster
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_igetfield, rcx, rbx);
- }
- __ jmp(Done);
-
- __ bind(notInt);
- // atos
- __ cmpl(flags, atos );
- __ jcc(Assembler::notEqual, notObj);
-
- __ movl(rax, lo );
- __ push(atos);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_agetfield, rcx, rbx);
- }
- __ jmp(Done);
-
- __ bind(notObj);
- // ctos
- __ cmpl(flags, ctos );
- __ jcc(Assembler::notEqual, notChar);
-
- __ load_unsigned_short(rax, lo );
- __ push(ctos);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_cgetfield, rcx, rbx);
- }
- __ jmp(Done);
-
- __ bind(notChar);
- // stos
- __ cmpl(flags, stos );
- __ jcc(Assembler::notEqual, notShort);
-
- __ load_signed_short(rax, lo );
- __ push(stos);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_sgetfield, rcx, rbx);
- }
- __ jmp(Done);
-
- __ bind(notShort);
- // ltos
- __ cmpl(flags, ltos );
- __ jcc(Assembler::notEqual, notLong);
-
- // Generate code as if volatile. There just aren't enough registers to
- // save that information and this code is faster than the test.
- __ fild_d(lo); // Must load atomically
- __ subptr(rsp,2*wordSize); // Make space for store
- __ fistp_d(Address(rsp,0));
- __ pop(rax);
- __ pop(rdx);
-
- __ push(ltos);
- // Don't rewrite to _fast_lgetfield for potential volatile case.
- __ jmp(Done);
-
- __ bind(notLong);
- // ftos
- __ cmpl(flags, ftos );
- __ jcc(Assembler::notEqual, notFloat);
-
- __ fld_s(lo);
- __ push(ftos);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_fgetfield, rcx, rbx);
- }
- __ jmp(Done);
-
- __ bind(notFloat);
- // dtos
- __ cmpl(flags, dtos );
- __ jcc(Assembler::notEqual, notDouble);
-
- __ fld_d(lo);
- __ push(dtos);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_dgetfield, rcx, rbx);
- }
- __ jmpb(Done);
-
- __ bind(notDouble);
-
- __ stop("Bad state");
-
- __ bind(Done);
- // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO).
- // volatile_barrier( );
-}
-
-
-void TemplateTable::getfield(int byte_no) {
- getfield_or_static(byte_no, false);
-}
-
-
-void TemplateTable::getstatic(int byte_no) {
- getfield_or_static(byte_no, true);
-}
-
-// The registers cache and index expected to be set before call.
-// The function may destroy various registers, just not the cache and index registers.
-void TemplateTable::jvmti_post_field_mod(Register cache, Register index, bool is_static) {
-
- ByteSize cp_base_offset = ConstantPoolCache::base_offset();
-
- if (JvmtiExport::can_post_field_modification()) {
- // Check to see if a field modification watch has been set before we take
- // the time to call into the VM.
- Label L1;
- assert_different_registers(cache, index, rax);
- __ mov32(rax, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr()));
- __ testl(rax, rax);
- __ jcc(Assembler::zero, L1);
-
- // The cache and index registers have been already set.
- // This allows to eliminate this call but the cache and index
- // registers have to be correspondingly used after this line.
- __ get_cache_and_index_at_bcp(rax, rdx, 1);
-
- if (is_static) {
- // Life is simple. Null out the object pointer.
- __ xorptr(rbx, rbx);
- } else {
- // Life is harder. The stack holds the value on top, followed by the object.
- // We don't know the size of the value, though; it could be one or two words
- // depending on its type. As a result, we must find the type to determine where
- // the object is.
- Label two_word, valsize_known;
- __ movl(rcx, Address(rax, rdx, Address::times_ptr, in_bytes(cp_base_offset +
- ConstantPoolCacheEntry::flags_offset())));
- __ mov(rbx, rsp);
- __ shrl(rcx, ConstantPoolCacheEntry::tos_state_shift);
- // Make sure we don't need to mask rcx after the above shift
- ConstantPoolCacheEntry::verify_tos_state_shift();
- __ cmpl(rcx, ltos);
- __ jccb(Assembler::equal, two_word);
- __ cmpl(rcx, dtos);
- __ jccb(Assembler::equal, two_word);
- __ addptr(rbx, Interpreter::expr_offset_in_bytes(1)); // one word jvalue (not ltos, dtos)
- __ jmpb(valsize_known);
-
- __ bind(two_word);
- __ addptr(rbx, Interpreter::expr_offset_in_bytes(2)); // two words jvalue
-
- __ bind(valsize_known);
- // setup object pointer
- __ movptr(rbx, Address(rbx, 0));
- }
- // cache entry pointer
- __ addptr(rax, in_bytes(cp_base_offset));
- __ shll(rdx, LogBytesPerWord);
- __ addptr(rax, rdx);
- // object (tos)
- __ mov(rcx, rsp);
- // rbx,: object pointer set up above (NULL if static)
- // rax,: cache entry pointer
- // rcx: jvalue object on the stack
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification),
- rbx, rax, rcx);
- __ get_cache_and_index_at_bcp(cache, index, 1);
- __ bind(L1);
- }
-}
-
-
-void TemplateTable::putfield_or_static(int byte_no, bool is_static) {
- transition(vtos, vtos);
-
- const Register cache = rcx;
- const Register index = rdx;
- const Register obj = rcx;
- const Register off = rbx;
- const Register flags = rax;
-
- resolve_cache_and_index(byte_no, cache, index, sizeof(u2));
- jvmti_post_field_mod(cache, index, is_static);
- load_field_cp_cache_entry(obj, cache, index, off, flags, is_static);
-
- // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO).
- // volatile_barrier( );
-
- Label notVolatile, Done;
- __ movl(rdx, flags);
- __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift);
- __ andl(rdx, 0x1);
-
- // field addresses
- const Address lo(obj, off, Address::times_1, 0*wordSize);
- const Address hi(obj, off, Address::times_1, 1*wordSize);
-
- Label notByte, notInt, notShort, notChar, notLong, notFloat, notObj, notDouble;
-
- __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift);
- assert(btos == 0, "change code, btos != 0");
- __ andl(flags, ConstantPoolCacheEntry::tos_state_mask);
- __ jcc(Assembler::notZero, notByte);
-
- // btos
- {
- __ pop(btos);
- if (!is_static) pop_and_check_object(obj);
- __ movb(lo, rax);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_bputfield, rcx, rbx, true, byte_no);
- }
- __ jmp(Done);
- }
-
- __ bind(notByte);
- __ cmpl(flags, itos);
- __ jcc(Assembler::notEqual, notInt);
-
- // itos
- {
- __ pop(itos);
- if (!is_static) pop_and_check_object(obj);
- __ movl(lo, rax);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_iputfield, rcx, rbx, true, byte_no);
- }
- __ jmp(Done);
- }
-
- __ bind(notInt);
- __ cmpl(flags, atos);
- __ jcc(Assembler::notEqual, notObj);
-
- // atos
- {
- __ pop(atos);
- if (!is_static) pop_and_check_object(obj);
- do_oop_store(_masm, lo, rax, _bs->kind(), false);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_aputfield, rcx, rbx, true, byte_no);
- }
- __ jmp(Done);
- }
-
- __ bind(notObj);
- __ cmpl(flags, ctos);
- __ jcc(Assembler::notEqual, notChar);
-
- // ctos
- {
- __ pop(ctos);
- if (!is_static) pop_and_check_object(obj);
- __ movw(lo, rax);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_cputfield, rcx, rbx, true, byte_no);
- }
- __ jmp(Done);
- }
-
- __ bind(notChar);
- __ cmpl(flags, stos);
- __ jcc(Assembler::notEqual, notShort);
-
- // stos
- {
- __ pop(stos);
- if (!is_static) pop_and_check_object(obj);
- __ movw(lo, rax);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_sputfield, rcx, rbx, true, byte_no);
- }
- __ jmp(Done);
- }
-
- __ bind(notShort);
- __ cmpl(flags, ltos);
- __ jcc(Assembler::notEqual, notLong);
-
- // ltos
- {
- Label notVolatileLong;
- __ testl(rdx, rdx);
- __ jcc(Assembler::zero, notVolatileLong);
-
- __ pop(ltos); // overwrites rdx, do this after testing volatile.
- if (!is_static) pop_and_check_object(obj);
-
- // Replace with real volatile test
- __ push(rdx);
- __ push(rax); // Must update atomically with FIST
- __ fild_d(Address(rsp,0)); // So load into FPU register
- __ fistp_d(lo); // and put into memory atomically
- __ addptr(rsp, 2*wordSize);
- // volatile_barrier();
- volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad |
- Assembler::StoreStore));
- // Don't rewrite volatile version
- __ jmp(notVolatile);
-
- __ bind(notVolatileLong);
-
- __ pop(ltos); // overwrites rdx
- if (!is_static) pop_and_check_object(obj);
- NOT_LP64(__ movptr(hi, rdx));
- __ movptr(lo, rax);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_lputfield, rcx, rbx, true, byte_no);
- }
- __ jmp(notVolatile);
- }
-
- __ bind(notLong);
- __ cmpl(flags, ftos);
- __ jcc(Assembler::notEqual, notFloat);
-
- // ftos
- {
- __ pop(ftos);
- if (!is_static) pop_and_check_object(obj);
- __ fstp_s(lo);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_fputfield, rcx, rbx, true, byte_no);
- }
- __ jmp(Done);
- }
-
- __ bind(notFloat);
-#ifdef ASSERT
- __ cmpl(flags, dtos);
- __ jcc(Assembler::notEqual, notDouble);
-#endif
-
- // dtos
- {
- __ pop(dtos);
- if (!is_static) pop_and_check_object(obj);
- __ fstp_d(lo);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_dputfield, rcx, rbx, true, byte_no);
- }
- __ jmp(Done);
- }
-
-#ifdef ASSERT
- __ bind(notDouble);
- __ stop("Bad state");
-#endif
-
- __ bind(Done);
-
- // Check for volatile store
- __ testl(rdx, rdx);
- __ jcc(Assembler::zero, notVolatile);
- volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad |
- Assembler::StoreStore));
- __ bind(notVolatile);
-}
-
-
-void TemplateTable::putfield(int byte_no) {
- putfield_or_static(byte_no, false);
-}
-
-
-void TemplateTable::putstatic(int byte_no) {
- putfield_or_static(byte_no, true);
-}
-
-void TemplateTable::jvmti_post_fast_field_mod() {
- if (JvmtiExport::can_post_field_modification()) {
- // Check to see if a field modification watch has been set before we take
- // the time to call into the VM.
- Label L2;
- __ mov32(rcx, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr()));
- __ testl(rcx,rcx);
- __ jcc(Assembler::zero, L2);
- __ pop_ptr(rbx); // copy the object pointer from tos
- __ verify_oop(rbx);
- __ push_ptr(rbx); // put the object pointer back on tos
-
- // Save tos values before call_VM() clobbers them. Since we have
- // to do it for every data type, we use the saved values as the
- // jvalue object.
- switch (bytecode()) { // load values into the jvalue object
- case Bytecodes::_fast_aputfield: __ push_ptr(rax); break;
- case Bytecodes::_fast_bputfield: // fall through
- case Bytecodes::_fast_sputfield: // fall through
- case Bytecodes::_fast_cputfield: // fall through
- case Bytecodes::_fast_iputfield: __ push_i(rax); break;
- case Bytecodes::_fast_dputfield: __ push_d(); break;
- case Bytecodes::_fast_fputfield: __ push_f(); break;
- case Bytecodes::_fast_lputfield: __ push_l(rax); break;
-
- default:
- ShouldNotReachHere();
- }
- __ mov(rcx, rsp); // points to jvalue on the stack
- // access constant pool cache entry
- __ get_cache_entry_pointer_at_bcp(rax, rdx, 1);
- __ verify_oop(rbx);
- // rbx,: object pointer copied above
- // rax,: cache entry pointer
- // rcx: jvalue object on the stack
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_modification), rbx, rax, rcx);
-
- switch (bytecode()) { // restore tos values
- case Bytecodes::_fast_aputfield: __ pop_ptr(rax); break;
- case Bytecodes::_fast_bputfield: // fall through
- case Bytecodes::_fast_sputfield: // fall through
- case Bytecodes::_fast_cputfield: // fall through
- case Bytecodes::_fast_iputfield: __ pop_i(rax); break;
- case Bytecodes::_fast_dputfield: __ pop_d(); break;
- case Bytecodes::_fast_fputfield: __ pop_f(); break;
- case Bytecodes::_fast_lputfield: __ pop_l(rax); break;
- }
- __ bind(L2);
- }
-}
-
-void TemplateTable::fast_storefield(TosState state) {
- transition(state, vtos);
-
- ByteSize base = ConstantPoolCache::base_offset();
-
- jvmti_post_fast_field_mod();
-
- // access constant pool cache
- __ get_cache_and_index_at_bcp(rcx, rbx, 1);
-
- // test for volatile with rdx but rdx is tos register for lputfield.
- if (bytecode() == Bytecodes::_fast_lputfield) __ push(rdx);
- __ movl(rdx, Address(rcx, rbx, Address::times_ptr, in_bytes(base +
- ConstantPoolCacheEntry::flags_offset())));
-
- // replace index with field offset from cache entry
- __ movptr(rbx, Address(rcx, rbx, Address::times_ptr, in_bytes(base + ConstantPoolCacheEntry::f2_offset())));
-
- // Doug Lea believes this is not needed with current Sparcs (TSO) and Intel (PSO).
- // volatile_barrier( );
-
- Label notVolatile, Done;
- __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift);
- __ andl(rdx, 0x1);
- // Check for volatile store
- __ testl(rdx, rdx);
- __ jcc(Assembler::zero, notVolatile);
-
- if (bytecode() == Bytecodes::_fast_lputfield) __ pop(rdx);
-
- // Get object from stack
- pop_and_check_object(rcx);
-
- // field addresses
- const Address lo(rcx, rbx, Address::times_1, 0*wordSize);
- const Address hi(rcx, rbx, Address::times_1, 1*wordSize);
-
- // access field
- switch (bytecode()) {
- case Bytecodes::_fast_bputfield: __ movb(lo, rax); break;
- case Bytecodes::_fast_sputfield: // fall through
- case Bytecodes::_fast_cputfield: __ movw(lo, rax); break;
- case Bytecodes::_fast_iputfield: __ movl(lo, rax); break;
- case Bytecodes::_fast_lputfield:
- NOT_LP64(__ movptr(hi, rdx));
- __ movptr(lo, rax);
- break;
- case Bytecodes::_fast_fputfield: __ fstp_s(lo); break;
- case Bytecodes::_fast_dputfield: __ fstp_d(lo); break;
- case Bytecodes::_fast_aputfield: {
- do_oop_store(_masm, lo, rax, _bs->kind(), false);
- break;
- }
- default:
- ShouldNotReachHere();
- }
-
- Label done;
- volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad |
- Assembler::StoreStore));
- // Barriers are so large that short branch doesn't reach!
- __ jmp(done);
-
- // Same code as above, but don't need rdx to test for volatile.
- __ bind(notVolatile);
-
- if (bytecode() == Bytecodes::_fast_lputfield) __ pop(rdx);
-
- // Get object from stack
- pop_and_check_object(rcx);
-
- // access field
- switch (bytecode()) {
- case Bytecodes::_fast_bputfield: __ movb(lo, rax); break;
- case Bytecodes::_fast_sputfield: // fall through
- case Bytecodes::_fast_cputfield: __ movw(lo, rax); break;
- case Bytecodes::_fast_iputfield: __ movl(lo, rax); break;
- case Bytecodes::_fast_lputfield:
- NOT_LP64(__ movptr(hi, rdx));
- __ movptr(lo, rax);
- break;
- case Bytecodes::_fast_fputfield: __ fstp_s(lo); break;
- case Bytecodes::_fast_dputfield: __ fstp_d(lo); break;
- case Bytecodes::_fast_aputfield: {
- do_oop_store(_masm, lo, rax, _bs->kind(), false);
- break;
- }
- default:
- ShouldNotReachHere();
- }
- __ bind(done);
-}
-
-
-void TemplateTable::fast_accessfield(TosState state) {
- transition(atos, state);
-
- // do the JVMTI work here to avoid disturbing the register state below
- if (JvmtiExport::can_post_field_access()) {
- // Check to see if a field access watch has been set before we take
- // the time to call into the VM.
- Label L1;
- __ mov32(rcx, ExternalAddress((address) JvmtiExport::get_field_access_count_addr()));
- __ testl(rcx,rcx);
- __ jcc(Assembler::zero, L1);
- // access constant pool cache entry
- __ get_cache_entry_pointer_at_bcp(rcx, rdx, 1);
- __ push_ptr(rax); // save object pointer before call_VM() clobbers it
- __ verify_oop(rax);
- // rax,: object pointer copied above
- // rcx: cache entry pointer
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::post_field_access), rax, rcx);
- __ pop_ptr(rax); // restore object pointer
- __ bind(L1);
- }
-
- // access constant pool cache
- __ get_cache_and_index_at_bcp(rcx, rbx, 1);
- // replace index with field offset from cache entry
- __ movptr(rbx, Address(rcx,
- rbx,
- Address::times_ptr,
- in_bytes(ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::f2_offset())));
-
-
- // rax,: object
- __ verify_oop(rax);
- __ null_check(rax);
- // field addresses
- const Address lo = Address(rax, rbx, Address::times_1, 0*wordSize);
- const Address hi = Address(rax, rbx, Address::times_1, 1*wordSize);
-
- // access field
- switch (bytecode()) {
- case Bytecodes::_fast_bgetfield: __ movsbl(rax, lo ); break;
- case Bytecodes::_fast_sgetfield: __ load_signed_short(rax, lo ); break;
- case Bytecodes::_fast_cgetfield: __ load_unsigned_short(rax, lo ); break;
- case Bytecodes::_fast_igetfield: __ movl(rax, lo); break;
- case Bytecodes::_fast_lgetfield: __ stop("should not be rewritten"); break;
- case Bytecodes::_fast_fgetfield: __ fld_s(lo); break;
- case Bytecodes::_fast_dgetfield: __ fld_d(lo); break;
- case Bytecodes::_fast_agetfield: __ movptr(rax, lo); __ verify_oop(rax); break;
- default:
- ShouldNotReachHere();
- }
-
- // Doug Lea believes this is not needed with current Sparcs(TSO) and Intel(PSO)
- // volatile_barrier( );
-}
-
-void TemplateTable::fast_xaccess(TosState state) {
- transition(vtos, state);
- // get receiver
- __ movptr(rax, aaddress(0));
- // access constant pool cache
- __ get_cache_and_index_at_bcp(rcx, rdx, 2);
- __ movptr(rbx, Address(rcx,
- rdx,
- Address::times_ptr,
- in_bytes(ConstantPoolCache::base_offset() + ConstantPoolCacheEntry::f2_offset())));
- // make sure exception is reported in correct bcp range (getfield is next instruction)
- __ increment(rsi);
- __ null_check(rax);
- const Address lo = Address(rax, rbx, Address::times_1, 0*wordSize);
- if (state == itos) {
- __ movl(rax, lo);
- } else if (state == atos) {
- __ movptr(rax, lo);
- __ verify_oop(rax);
- } else if (state == ftos) {
- __ fld_s(lo);
- } else {
- ShouldNotReachHere();
- }
- __ decrement(rsi);
-}
-
-
-
-//----------------------------------------------------------------------------------------------------
-// Calls
-
-void TemplateTable::count_calls(Register method, Register temp) {
- // implemented elsewhere
- ShouldNotReachHere();
-}
-
-
-void TemplateTable::prepare_invoke(int byte_no,
- Register method, // linked method (or i-klass)
- Register index, // itable index, MethodType, etc.
- Register recv, // if caller wants to see it
- Register flags // if caller wants to test it
- ) {
- // determine flags
- const Bytecodes::Code code = bytecode();
- const bool is_invokeinterface = code == Bytecodes::_invokeinterface;
- const bool is_invokedynamic = code == Bytecodes::_invokedynamic;
- const bool is_invokehandle = code == Bytecodes::_invokehandle;
- const bool is_invokevirtual = code == Bytecodes::_invokevirtual;
- const bool is_invokespecial = code == Bytecodes::_invokespecial;
- const bool load_receiver = (recv != noreg);
- const bool save_flags = (flags != noreg);
- assert(load_receiver == (code != Bytecodes::_invokestatic && code != Bytecodes::_invokedynamic), "");
- assert(save_flags == (is_invokeinterface || is_invokevirtual), "need flags for vfinal");
- assert(flags == noreg || flags == rdx, "");
- assert(recv == noreg || recv == rcx, "");
-
- // setup registers & access constant pool cache
- if (recv == noreg) recv = rcx;
- if (flags == noreg) flags = rdx;
- assert_different_registers(method, index, recv, flags);
-
- // save 'interpreter return address'
- __ save_bcp();
-
- load_invoke_cp_cache_entry(byte_no, method, index, flags, is_invokevirtual, false, is_invokedynamic);
-
- // maybe push appendix to arguments (just before return address)
- if (is_invokedynamic || is_invokehandle) {
- Label L_no_push;
- __ testl(flags, (1 << ConstantPoolCacheEntry::has_appendix_shift));
- __ jccb(Assembler::zero, L_no_push);
- // Push the appendix as a trailing parameter.
- // This must be done before we get the receiver,
- // since the parameter_size includes it.
- __ push(rbx);
- __ mov(rbx, index);
- assert(ConstantPoolCacheEntry::_indy_resolved_references_appendix_offset == 0, "appendix expected at index+0");
- __ load_resolved_reference_at_index(index, rbx);
- __ pop(rbx);
- __ push(index); // push appendix (MethodType, CallSite, etc.)
- __ bind(L_no_push);
- }
-
- // load receiver if needed (note: no return address pushed yet)
- if (load_receiver) {
- __ movl(recv, flags);
- __ andl(recv, ConstantPoolCacheEntry::parameter_size_mask);
- const int no_return_pc_pushed_yet = -1; // argument slot correction before we push return address
- const int receiver_is_at_end = -1; // back off one slot to get receiver
- Address recv_addr = __ argument_address(recv, no_return_pc_pushed_yet + receiver_is_at_end);
- __ movptr(recv, recv_addr);
- __ verify_oop(recv);
- }
-
- if (save_flags) {
- __ mov(rsi, flags);
- }
-
- // compute return type
- __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift);
- // Make sure we don't need to mask flags after the above shift
- ConstantPoolCacheEntry::verify_tos_state_shift();
- // load return address
- {
- const address table_addr = (address) Interpreter::invoke_return_entry_table_for(code);
- ExternalAddress table(table_addr);
- __ movptr(flags, ArrayAddress(table, Address(noreg, flags, Address::times_ptr)));
- }
-
- // push return address
- __ push(flags);
-
- // Restore flags value from the constant pool cache, and restore rsi
- // for later null checks. rsi is the bytecode pointer
- if (save_flags) {
- __ mov(flags, rsi);
- __ restore_bcp();
- }
-}
-
-
-void TemplateTable::invokevirtual_helper(Register index,
- Register recv,
- Register flags) {
- // Uses temporary registers rax, rdx
- assert_different_registers(index, recv, rax, rdx);
- assert(index == rbx, "");
- assert(recv == rcx, "");
-
- // Test for an invoke of a final method
- Label notFinal;
- __ movl(rax, flags);
- __ andl(rax, (1 << ConstantPoolCacheEntry::is_vfinal_shift));
- __ jcc(Assembler::zero, notFinal);
-
- const Register method = index; // method must be rbx
- assert(method == rbx,
- "Method* must be rbx for interpreter calling convention");
-
- // do the call - the index is actually the method to call
- // that is, f2 is a vtable index if !is_vfinal, else f2 is a Method*
-
- // It's final, need a null check here!
- __ null_check(recv);
-
- // profile this call
- __ profile_final_call(rax);
- __ profile_arguments_type(rax, method, rsi, true);
-
- __ jump_from_interpreted(method, rax);
-
- __ bind(notFinal);
-
- // get receiver klass
- __ null_check(recv, oopDesc::klass_offset_in_bytes());
- __ load_klass(rax, recv);
-
- // profile this call
- __ profile_virtual_call(rax, rdi, rdx);
-
- // get target Method* & entry point
- __ lookup_virtual_method(rax, index, method);
- __ profile_arguments_type(rdx, method, rsi, true);
- __ jump_from_interpreted(method, rdx);
-}
-
-
-void TemplateTable::invokevirtual(int byte_no) {
- transition(vtos, vtos);
- assert(byte_no == f2_byte, "use this argument");
- prepare_invoke(byte_no,
- rbx, // method or vtable index
- noreg, // unused itable index
- rcx, rdx); // recv, flags
-
- // rbx: index
- // rcx: receiver
- // rdx: flags
-
- invokevirtual_helper(rbx, rcx, rdx);
-}
-
-
-void TemplateTable::invokespecial(int byte_no) {
- transition(vtos, vtos);
- assert(byte_no == f1_byte, "use this argument");
- prepare_invoke(byte_no, rbx, noreg, // get f1 Method*
- rcx); // get receiver also for null check
- __ verify_oop(rcx);
- __ null_check(rcx);
- // do the call
- __ profile_call(rax);
- __ profile_arguments_type(rax, rbx, rsi, false);
- __ jump_from_interpreted(rbx, rax);
-}
-
-
-void TemplateTable::invokestatic(int byte_no) {
- transition(vtos, vtos);
- assert(byte_no == f1_byte, "use this argument");
- prepare_invoke(byte_no, rbx); // get f1 Method*
- // do the call
- __ profile_call(rax);
- __ profile_arguments_type(rax, rbx, rsi, false);
- __ jump_from_interpreted(rbx, rax);
-}
-
-
-void TemplateTable::fast_invokevfinal(int byte_no) {
- transition(vtos, vtos);
- assert(byte_no == f2_byte, "use this argument");
- __ stop("fast_invokevfinal not used on x86");
-}
-
-
-void TemplateTable::invokeinterface(int byte_no) {
- transition(vtos, vtos);
- assert(byte_no == f1_byte, "use this argument");
- prepare_invoke(byte_no, rax, rbx, // get f1 Klass*, f2 itable index
- rcx, rdx); // recv, flags
-
- // rax: interface klass (from f1)
- // rbx: itable index (from f2)
- // rcx: receiver
- // rdx: flags
-
- // Special case of invokeinterface called for virtual method of
- // java.lang.Object. See cpCacheOop.cpp for details.
- // This code isn't produced by javac, but could be produced by
- // another compliant java compiler.
- Label notMethod;
- __ movl(rdi, rdx);
- __ andl(rdi, (1 << ConstantPoolCacheEntry::is_forced_virtual_shift));
- __ jcc(Assembler::zero, notMethod);
-
- invokevirtual_helper(rbx, rcx, rdx);
- __ bind(notMethod);
-
- // Get receiver klass into rdx - also a null check
- __ restore_locals(); // restore rdi
- __ null_check(rcx, oopDesc::klass_offset_in_bytes());
- __ load_klass(rdx, rcx);
-
- // profile this call
- __ profile_virtual_call(rdx, rsi, rdi);
-
- Label no_such_interface, no_such_method;
-
- __ lookup_interface_method(// inputs: rec. class, interface, itable index
- rdx, rax, rbx,
- // outputs: method, scan temp. reg
- rbx, rsi,
- no_such_interface);
-
- // rbx: Method* to call
- // rcx: receiver
- // Check for abstract method error
- // Note: This should be done more efficiently via a throw_abstract_method_error
- // interpreter entry point and a conditional jump to it in case of a null
- // method.
- __ testptr(rbx, rbx);
- __ jcc(Assembler::zero, no_such_method);
-
- __ profile_arguments_type(rdx, rbx, rsi, true);
-
- // do the call
- // rcx: receiver
- // rbx,: Method*
- __ jump_from_interpreted(rbx, rdx);
- __ should_not_reach_here();
-
- // exception handling code follows...
- // note: must restore interpreter registers to canonical
- // state for exception handling to work correctly!
-
- __ bind(no_such_method);
- // throw exception
- __ pop(rbx); // pop return address (pushed by prepare_invoke)
- __ restore_bcp(); // rsi must be correct for exception handler (was destroyed)
- __ restore_locals(); // make sure locals pointer is correct as well (was destroyed)
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError));
- // the call_VM checks for exception, so we should never return here.
- __ should_not_reach_here();
-
- __ bind(no_such_interface);
- // throw exception
- __ pop(rbx); // pop return address (pushed by prepare_invoke)
- __ restore_bcp(); // rsi must be correct for exception handler (was destroyed)
- __ restore_locals(); // make sure locals pointer is correct as well (was destroyed)
- __ call_VM(noreg, CAST_FROM_FN_PTR(address,
- InterpreterRuntime::throw_IncompatibleClassChangeError));
- // the call_VM checks for exception, so we should never return here.
- __ should_not_reach_here();
-}
-
-void TemplateTable::invokehandle(int byte_no) {
- transition(vtos, vtos);
- assert(byte_no == f1_byte, "use this argument");
- const Register rbx_method = rbx;
- const Register rax_mtype = rax;
- const Register rcx_recv = rcx;
- const Register rdx_flags = rdx;
-
- prepare_invoke(byte_no, rbx_method, rax_mtype, rcx_recv);
- __ verify_method_ptr(rbx_method);
- __ verify_oop(rcx_recv);
- __ null_check(rcx_recv);
-
- // rax: MethodType object (from cpool->resolved_references[f1], if necessary)
- // rbx: MH.invokeExact_MT method (from f2)
-
- // Note: rax_mtype is already pushed (if necessary) by prepare_invoke
-
- // FIXME: profile the LambdaForm also
- __ profile_final_call(rax);
- __ profile_arguments_type(rdx, rbx_method, rsi, true);
-
- __ jump_from_interpreted(rbx_method, rdx);
-}
-
-
-void TemplateTable::invokedynamic(int byte_no) {
- transition(vtos, vtos);
- assert(byte_no == f1_byte, "use this argument");
-
- const Register rbx_method = rbx;
- const Register rax_callsite = rax;
-
- prepare_invoke(byte_no, rbx_method, rax_callsite);
-
- // rax: CallSite object (from cpool->resolved_references[f1])
- // rbx: MH.linkToCallSite method (from f2)
-
- // Note: rax_callsite is already pushed by prepare_invoke
-
- // %%% should make a type profile for any invokedynamic that takes a ref argument
- // profile this call
- __ profile_call(rsi);
- __ profile_arguments_type(rdx, rbx, rsi, false);
-
- __ verify_oop(rax_callsite);
-
- __ jump_from_interpreted(rbx_method, rdx);
-}
-
-//----------------------------------------------------------------------------------------------------
-// Allocation
-
-void TemplateTable::_new() {
- transition(vtos, atos);
- __ get_unsigned_2_byte_index_at_bcp(rdx, 1);
- Label slow_case;
- Label slow_case_no_pop;
- Label done;
- Label initialize_header;
- Label initialize_object; // including clearing the fields
- Label allocate_shared;
-
- __ get_cpool_and_tags(rcx, rax);
-
- // Make sure the class we're about to instantiate has been resolved.
- // This is done before loading InstanceKlass to be consistent with the order
- // how Constant Pool is updated (see ConstantPool::klass_at_put)
- const int tags_offset = Array<u1>::base_offset_in_bytes();
- __ cmpb(Address(rax, rdx, Address::times_1, tags_offset), JVM_CONSTANT_Class);
- __ jcc(Assembler::notEqual, slow_case_no_pop);
-
- // get InstanceKlass
- __ movptr(rcx, Address(rcx, rdx, Address::times_ptr, sizeof(ConstantPool)));
- __ push(rcx); // save the contexts of klass for initializing the header
-
- // make sure klass is initialized & doesn't have finalizer
- // make sure klass is fully initialized
- __ cmpb(Address(rcx, InstanceKlass::init_state_offset()), InstanceKlass::fully_initialized);
- __ jcc(Assembler::notEqual, slow_case);
-
- // get instance_size in InstanceKlass (scaled to a count of bytes)
- __ movl(rdx, Address(rcx, Klass::layout_helper_offset()));
- // test to see if it has a finalizer or is malformed in some way
- __ testl(rdx, Klass::_lh_instance_slow_path_bit);
- __ jcc(Assembler::notZero, slow_case);
-
- //
- // Allocate the instance
- // 1) Try to allocate in the TLAB
- // 2) if fail and the object is large allocate in the shared Eden
- // 3) if the above fails (or is not applicable), go to a slow case
- // (creates a new TLAB, etc.)
-
- const bool allow_shared_alloc =
- Universe::heap()->supports_inline_contig_alloc();
-
- const Register thread = rcx;
- if (UseTLAB || allow_shared_alloc) {
- __ get_thread(thread);
- }
-
- if (UseTLAB) {
- __ movptr(rax, Address(thread, in_bytes(JavaThread::tlab_top_offset())));
- __ lea(rbx, Address(rax, rdx, Address::times_1));
- __ cmpptr(rbx, Address(thread, in_bytes(JavaThread::tlab_end_offset())));
- __ jcc(Assembler::above, allow_shared_alloc ? allocate_shared : slow_case);
- __ movptr(Address(thread, in_bytes(JavaThread::tlab_top_offset())), rbx);
- if (ZeroTLAB) {
- // the fields have been already cleared
- __ jmp(initialize_header);
- } else {
- // initialize both the header and fields
- __ jmp(initialize_object);
- }
- }
-
- // Allocation in the shared Eden, if allowed.
- //
- // rdx: instance size in bytes
- if (allow_shared_alloc) {
- __ bind(allocate_shared);
-
- ExternalAddress heap_top((address)Universe::heap()->top_addr());
-
- Label retry;
- __ bind(retry);
- __ movptr(rax, heap_top);
- __ lea(rbx, Address(rax, rdx, Address::times_1));
- __ cmpptr(rbx, ExternalAddress((address)Universe::heap()->end_addr()));
- __ jcc(Assembler::above, slow_case);
-
- // Compare rax, with the top addr, and if still equal, store the new
- // top addr in rbx, at the address of the top addr pointer. Sets ZF if was
- // equal, and clears it otherwise. Use lock prefix for atomicity on MPs.
- //
- // rax,: object begin
- // rbx,: object end
- // rdx: instance size in bytes
- __ locked_cmpxchgptr(rbx, heap_top);
-
- // if someone beat us on the allocation, try again, otherwise continue
- __ jcc(Assembler::notEqual, retry);
-
- __ incr_allocated_bytes(thread, rdx, 0);
- }
-
- if (UseTLAB || Universe::heap()->supports_inline_contig_alloc()) {
- // The object is initialized before the header. If the object size is
- // zero, go directly to the header initialization.
- __ bind(initialize_object);
- __ decrement(rdx, sizeof(oopDesc));
- __ jcc(Assembler::zero, initialize_header);
-
- // Initialize topmost object field, divide rdx by 8, check if odd and
- // test if zero.
- __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code)
- __ shrl(rdx, LogBytesPerLong); // divide by 2*oopSize and set carry flag if odd
-
- // rdx must have been multiple of 8
-#ifdef ASSERT
- // make sure rdx was multiple of 8
- Label L;
- // Ignore partial flag stall after shrl() since it is debug VM
- __ jccb(Assembler::carryClear, L);
- __ stop("object size is not multiple of 2 - adjust this code");
- __ bind(L);
- // rdx must be > 0, no extra check needed here
-#endif
-
- // initialize remaining object fields: rdx was a multiple of 8
- { Label loop;
- __ bind(loop);
- __ movptr(Address(rax, rdx, Address::times_8, sizeof(oopDesc) - 1*oopSize), rcx);
- NOT_LP64(__ movptr(Address(rax, rdx, Address::times_8, sizeof(oopDesc) - 2*oopSize), rcx));
- __ decrement(rdx);
- __ jcc(Assembler::notZero, loop);
- }
-
- // initialize object header only.
- __ bind(initialize_header);
- if (UseBiasedLocking) {
- __ pop(rcx); // get saved klass back in the register.
- __ movptr(rbx, Address(rcx, Klass::prototype_header_offset()));
- __ movptr(Address(rax, oopDesc::mark_offset_in_bytes ()), rbx);
- } else {
- __ movptr(Address(rax, oopDesc::mark_offset_in_bytes ()),
- (int32_t)markOopDesc::prototype()); // header
- __ pop(rcx); // get saved klass back in the register.
- }
- __ store_klass(rax, rcx); // klass
-
- {
- SkipIfEqual skip_if(_masm, &DTraceAllocProbes, 0);
- // Trigger dtrace event for fastpath
- __ push(atos);
- __ call_VM_leaf(
- CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), rax);
- __ pop(atos);
- }
-
- __ jmp(done);
- }
-
- // slow case
- __ bind(slow_case);
- __ pop(rcx); // restore stack pointer to what it was when we came in.
- __ bind(slow_case_no_pop);
- __ get_constant_pool(rax);
- __ get_unsigned_2_byte_index_at_bcp(rdx, 1);
- call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::_new), rax, rdx);
-
- // continue
- __ bind(done);
-}
-
-
-void TemplateTable::newarray() {
- transition(itos, atos);
- __ push_i(rax); // make sure everything is on the stack
- __ load_unsigned_byte(rdx, at_bcp(1));
- call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::newarray), rdx, rax);
- __ pop_i(rdx); // discard size
-}
-
-
-void TemplateTable::anewarray() {
- transition(itos, atos);
- __ get_unsigned_2_byte_index_at_bcp(rdx, 1);
- __ get_constant_pool(rcx);
- call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::anewarray), rcx, rdx, rax);
-}
-
-
-void TemplateTable::arraylength() {
- transition(atos, itos);
- __ null_check(rax, arrayOopDesc::length_offset_in_bytes());
- __ movl(rax, Address(rax, arrayOopDesc::length_offset_in_bytes()));
-}
-
-
-void TemplateTable::checkcast() {
- transition(atos, atos);
- Label done, is_null, ok_is_subtype, quicked, resolved;
- __ testptr(rax, rax); // Object is in EAX
- __ jcc(Assembler::zero, is_null);
-
- // Get cpool & tags index
- __ get_cpool_and_tags(rcx, rdx); // ECX=cpool, EDX=tags array
- __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // EBX=index
- // See if bytecode has already been quicked
- __ cmpb(Address(rdx, rbx, Address::times_1, Array<u1>::base_offset_in_bytes()), JVM_CONSTANT_Class);
- __ jcc(Assembler::equal, quicked);
-
- __ push(atos);
- call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc) );
- // vm_result_2 has metadata result
- // borrow rdi from locals
- __ get_thread(rdi);
- __ get_vm_result_2(rax, rdi);
- __ restore_locals();
- __ pop_ptr(rdx);
- __ jmpb(resolved);
-
- // Get superklass in EAX and subklass in EBX
- __ bind(quicked);
- __ mov(rdx, rax); // Save object in EDX; EAX needed for subtype check
- __ movptr(rax, Address(rcx, rbx, Address::times_ptr, sizeof(ConstantPool)));
-
- __ bind(resolved);
- __ load_klass(rbx, rdx);
-
- // Generate subtype check. Blows ECX. Resets EDI. Object in EDX.
- // Superklass in EAX. Subklass in EBX.
- __ gen_subtype_check( rbx, ok_is_subtype );
-
- // Come here on failure
- __ push(rdx);
- // object is at TOS
- __ jump(ExternalAddress(Interpreter::_throw_ClassCastException_entry));
-
- // Come here on success
- __ bind(ok_is_subtype);
- __ mov(rax,rdx); // Restore object in EDX
-
- // Collect counts on whether this check-cast sees NULLs a lot or not.
- if (ProfileInterpreter) {
- __ jmp(done);
- __ bind(is_null);
- __ profile_null_seen(rcx);
- } else {
- __ bind(is_null); // same as 'done'
- }
- __ bind(done);
-}
-
-
-void TemplateTable::instanceof() {
- transition(atos, itos);
- Label done, is_null, ok_is_subtype, quicked, resolved;
- __ testptr(rax, rax);
- __ jcc(Assembler::zero, is_null);
-
- // Get cpool & tags index
- __ get_cpool_and_tags(rcx, rdx); // ECX=cpool, EDX=tags array
- __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // EBX=index
- // See if bytecode has already been quicked
- __ cmpb(Address(rdx, rbx, Address::times_1, Array<u1>::base_offset_in_bytes()), JVM_CONSTANT_Class);
- __ jcc(Assembler::equal, quicked);
-
- __ push(atos);
- call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc) );
- // vm_result_2 has metadata result
- // borrow rdi from locals
- __ get_thread(rdi);
- __ get_vm_result_2(rax, rdi);
- __ restore_locals();
- __ pop_ptr(rdx);
- __ load_klass(rdx, rdx);
- __ jmp(resolved);
-
- // Get superklass in EAX and subklass in EDX
- __ bind(quicked);
- __ load_klass(rdx, rax);
- __ movptr(rax, Address(rcx, rbx, Address::times_ptr, sizeof(ConstantPool)));
-
- __ bind(resolved);
-
- // Generate subtype check. Blows ECX. Resets EDI.
- // Superklass in EAX. Subklass in EDX.
- __ gen_subtype_check( rdx, ok_is_subtype );
-
- // Come here on failure
- __ xorl(rax,rax);
- __ jmpb(done);
- // Come here on success
- __ bind(ok_is_subtype);
- __ movl(rax, 1);
-
- // Collect counts on whether this test sees NULLs a lot or not.
- if (ProfileInterpreter) {
- __ jmp(done);
- __ bind(is_null);
- __ profile_null_seen(rcx);
- } else {
- __ bind(is_null); // same as 'done'
- }
- __ bind(done);
- // rax, = 0: obj == NULL or obj is not an instanceof the specified klass
- // rax, = 1: obj != NULL and obj is an instanceof the specified klass
-}
-
-
-//----------------------------------------------------------------------------------------------------
-// Breakpoints
-void TemplateTable::_breakpoint() {
-
- // Note: We get here even if we are single stepping..
- // jbug inists on setting breakpoints at every bytecode
- // even if we are in single step mode.
-
- transition(vtos, vtos);
-
- // get the unpatched byte code
- __ get_method(rcx);
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::get_original_bytecode_at), rcx, rsi);
- __ mov(rbx, rax);
-
- // post the breakpoint event
- __ get_method(rcx);
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::_breakpoint), rcx, rsi);
-
- // complete the execution of original bytecode
- __ dispatch_only_normal(vtos);
-}
-
-
-//----------------------------------------------------------------------------------------------------
-// Exceptions
-
-void TemplateTable::athrow() {
- transition(atos, vtos);
- __ null_check(rax);
- __ jump(ExternalAddress(Interpreter::throw_exception_entry()));
-}
-
-
-//----------------------------------------------------------------------------------------------------
-// Synchronization
-//
-// Note: monitorenter & exit are symmetric routines; which is reflected
-// in the assembly code structure as well
-//
-// Stack layout:
-//
-// [expressions ] <--- rsp = expression stack top
-// ..
-// [expressions ]
-// [monitor entry] <--- monitor block top = expression stack bot
-// ..
-// [monitor entry]
-// [frame data ] <--- monitor block bot
-// ...
-// [saved rbp, ] <--- rbp,
-
-
-void TemplateTable::monitorenter() {
- transition(atos, vtos);
-
- // check for NULL object
- __ null_check(rax);
-
- const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize);
- const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize);
- const int entry_size = ( frame::interpreter_frame_monitor_size() * wordSize);
- Label allocated;
-
- // initialize entry pointer
- __ xorl(rdx, rdx); // points to free slot or NULL
-
- // find a free slot in the monitor block (result in rdx)
- { Label entry, loop, exit;
- __ movptr(rcx, monitor_block_top); // points to current entry, starting with top-most entry
-
- __ lea(rbx, monitor_block_bot); // points to word before bottom of monitor block
- __ jmpb(entry);
-
- __ bind(loop);
- __ cmpptr(Address(rcx, BasicObjectLock::obj_offset_in_bytes()), (int32_t)NULL_WORD); // check if current entry is used
- __ cmovptr(Assembler::equal, rdx, rcx); // if not used then remember entry in rdx
- __ cmpptr(rax, Address(rcx, BasicObjectLock::obj_offset_in_bytes())); // check if current entry is for same object
- __ jccb(Assembler::equal, exit); // if same object then stop searching
- __ addptr(rcx, entry_size); // otherwise advance to next entry
- __ bind(entry);
- __ cmpptr(rcx, rbx); // check if bottom reached
- __ jcc(Assembler::notEqual, loop); // if not at bottom then check this entry
- __ bind(exit);
- }
-
- __ testptr(rdx, rdx); // check if a slot has been found
- __ jccb(Assembler::notZero, allocated); // if found, continue with that one
-
- // allocate one if there's no free slot
- { Label entry, loop;
- // 1. compute new pointers // rsp: old expression stack top
- __ movptr(rdx, monitor_block_bot); // rdx: old expression stack bottom
- __ subptr(rsp, entry_size); // move expression stack top
- __ subptr(rdx, entry_size); // move expression stack bottom
- __ mov(rcx, rsp); // set start value for copy loop
- __ movptr(monitor_block_bot, rdx); // set new monitor block top
- __ jmp(entry);
- // 2. move expression stack contents
- __ bind(loop);
- __ movptr(rbx, Address(rcx, entry_size)); // load expression stack word from old location
- __ movptr(Address(rcx, 0), rbx); // and store it at new location
- __ addptr(rcx, wordSize); // advance to next word
- __ bind(entry);
- __ cmpptr(rcx, rdx); // check if bottom reached
- __ jcc(Assembler::notEqual, loop); // if not at bottom then copy next word
- }
-
- // call run-time routine
- // rdx: points to monitor entry
- __ bind(allocated);
-
- // Increment bcp to point to the next bytecode, so exception handling for async. exceptions work correctly.
- // The object has already been poped from the stack, so the expression stack looks correct.
- __ increment(rsi);
-
- __ movptr(Address(rdx, BasicObjectLock::obj_offset_in_bytes()), rax); // store object
- __ lock_object(rdx);
-
- // check to make sure this monitor doesn't cause stack overflow after locking
- __ save_bcp(); // in case of exception
- __ generate_stack_overflow_check(0);
-
- // The bcp has already been incremented. Just need to dispatch to next instruction.
- __ dispatch_next(vtos);
-}
-
-
-void TemplateTable::monitorexit() {
- transition(atos, vtos);
-
- // check for NULL object
- __ null_check(rax);
-
- const Address monitor_block_top(rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize);
- const Address monitor_block_bot(rbp, frame::interpreter_frame_initial_sp_offset * wordSize);
- const int entry_size = ( frame::interpreter_frame_monitor_size() * wordSize);
- Label found;
-
- // find matching slot
- { Label entry, loop;
- __ movptr(rdx, monitor_block_top); // points to current entry, starting with top-most entry
- __ lea(rbx, monitor_block_bot); // points to word before bottom of monitor block
- __ jmpb(entry);
-
- __ bind(loop);
- __ cmpptr(rax, Address(rdx, BasicObjectLock::obj_offset_in_bytes())); // check if current entry is for same object
- __ jcc(Assembler::equal, found); // if same object then stop searching
- __ addptr(rdx, entry_size); // otherwise advance to next entry
- __ bind(entry);
- __ cmpptr(rdx, rbx); // check if bottom reached
- __ jcc(Assembler::notEqual, loop); // if not at bottom then check this entry
- }
-
- // error handling. Unlocking was not block-structured
- Label end;
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_illegal_monitor_state_exception));
- __ should_not_reach_here();
-
- // call run-time routine
- // rcx: points to monitor entry
- __ bind(found);
- __ push_ptr(rax); // make sure object is on stack (contract with oopMaps)
- __ unlock_object(rdx);
- __ pop_ptr(rax); // discard object
- __ bind(end);
-}
-
-
-//----------------------------------------------------------------------------------------------------
-// Wide instructions
-
-void TemplateTable::wide() {
- transition(vtos, vtos);
- __ load_unsigned_byte(rbx, at_bcp(1));
- ExternalAddress wtable((address)Interpreter::_wentry_point);
- __ jump(ArrayAddress(wtable, Address(noreg, rbx, Address::times_ptr)));
- // Note: the rsi increment step is part of the individual wide bytecode implementations
-}
-
-
-//----------------------------------------------------------------------------------------------------
-// Multi arrays
-
-void TemplateTable::multianewarray() {
- transition(vtos, atos);
- __ load_unsigned_byte(rax, at_bcp(3)); // get number of dimensions
- // last dim is on top of stack; we want address of first one:
- // first_addr = last_addr + (ndims - 1) * stackElementSize - 1*wordsize
- // the latter wordSize to point to the beginning of the array.
- __ lea( rax, Address(rsp, rax, Interpreter::stackElementScale(), -wordSize));
- call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::multianewarray), rax); // pass in rax,
- __ load_unsigned_byte(rbx, at_bcp(3));
- __ lea(rsp, Address(rsp, rbx, Interpreter::stackElementScale())); // get rid of counts
-}
-
-#endif /* !CC_INTERP */
--- a/hotspot/src/cpu/x86/vm/templateTable_x86_64.cpp Fri Mar 06 17:19:08 2015 -0800
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,3741 +0,0 @@
-/*
- * Copyright (c) 2003, 2014, 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/interpreterRuntime.hpp"
-#include "interpreter/interp_masm.hpp"
-#include "interpreter/templateTable.hpp"
-#include "memory/universe.inline.hpp"
-#include "oops/methodData.hpp"
-#include "oops/objArrayKlass.hpp"
-#include "oops/oop.inline.hpp"
-#include "prims/methodHandles.hpp"
-#include "runtime/sharedRuntime.hpp"
-#include "runtime/stubRoutines.hpp"
-#include "runtime/synchronizer.hpp"
-#include "utilities/macros.hpp"
-
-#ifndef CC_INTERP
-
-#define __ _masm->
-
-// Platform-dependent initialization
-
-void TemplateTable::pd_initialize() {
- // No amd64 specific initialization
-}
-
-// Address computation: local variables
-
-static inline Address iaddress(int n) {
- return Address(r14, Interpreter::local_offset_in_bytes(n));
-}
-
-static inline Address laddress(int n) {
- return iaddress(n + 1);
-}
-
-static inline Address faddress(int n) {
- return iaddress(n);
-}
-
-static inline Address daddress(int n) {
- return laddress(n);
-}
-
-static inline Address aaddress(int n) {
- return iaddress(n);
-}
-
-static inline Address iaddress(Register r) {
- return Address(r14, r, Address::times_8);
-}
-
-static inline Address laddress(Register r) {
- return Address(r14, r, Address::times_8, Interpreter::local_offset_in_bytes(1));
-}
-
-static inline Address faddress(Register r) {
- return iaddress(r);
-}
-
-static inline Address daddress(Register r) {
- return laddress(r);
-}
-
-static inline Address aaddress(Register r) {
- return iaddress(r);
-}
-
-static inline Address at_rsp() {
- return Address(rsp, 0);
-}
-
-// At top of Java expression stack which may be different than esp(). It
-// isn't for category 1 objects.
-static inline Address at_tos () {
- return Address(rsp, Interpreter::expr_offset_in_bytes(0));
-}
-
-static inline Address at_tos_p1() {
- return Address(rsp, Interpreter::expr_offset_in_bytes(1));
-}
-
-static inline Address at_tos_p2() {
- return Address(rsp, Interpreter::expr_offset_in_bytes(2));
-}
-
-// Condition conversion
-static Assembler::Condition j_not(TemplateTable::Condition cc) {
- switch (cc) {
- case TemplateTable::equal : return Assembler::notEqual;
- case TemplateTable::not_equal : return Assembler::equal;
- case TemplateTable::less : return Assembler::greaterEqual;
- case TemplateTable::less_equal : return Assembler::greater;
- case TemplateTable::greater : return Assembler::lessEqual;
- case TemplateTable::greater_equal: return Assembler::less;
- }
- ShouldNotReachHere();
- return Assembler::zero;
-}
-
-
-// Miscelaneous helper routines
-// Store an oop (or NULL) at the address described by obj.
-// If val == noreg this means store a NULL
-
-static void do_oop_store(InterpreterMacroAssembler* _masm,
- Address obj,
- Register val,
- BarrierSet::Name barrier,
- bool precise) {
- assert(val == noreg || val == rax, "parameter is just for looks");
- switch (barrier) {
-#if INCLUDE_ALL_GCS
- case BarrierSet::G1SATBCT:
- case BarrierSet::G1SATBCTLogging:
- {
- // flatten object address if needed
- if (obj.index() == noreg && obj.disp() == 0) {
- if (obj.base() != rdx) {
- __ movq(rdx, obj.base());
- }
- } else {
- __ leaq(rdx, obj);
- }
- __ g1_write_barrier_pre(rdx /* obj */,
- rbx /* pre_val */,
- r15_thread /* thread */,
- r8 /* tmp */,
- val != noreg /* tosca_live */,
- false /* expand_call */);
- if (val == noreg) {
- __ store_heap_oop_null(Address(rdx, 0));
- } else {
- // G1 barrier needs uncompressed oop for region cross check.
- Register new_val = val;
- if (UseCompressedOops) {
- new_val = rbx;
- __ movptr(new_val, val);
- }
- __ store_heap_oop(Address(rdx, 0), val);
- __ g1_write_barrier_post(rdx /* store_adr */,
- new_val /* new_val */,
- r15_thread /* thread */,
- r8 /* tmp */,
- rbx /* tmp2 */);
- }
- }
- break;
-#endif // INCLUDE_ALL_GCS
- case BarrierSet::CardTableModRef:
- case BarrierSet::CardTableExtension:
- {
- if (val == noreg) {
- __ store_heap_oop_null(obj);
- } else {
- __ store_heap_oop(obj, val);
- // flatten object address if needed
- if (!precise || (obj.index() == noreg && obj.disp() == 0)) {
- __ store_check(obj.base());
- } else {
- __ leaq(rdx, obj);
- __ store_check(rdx);
- }
- }
- }
- break;
- case BarrierSet::ModRef:
- if (val == noreg) {
- __ store_heap_oop_null(obj);
- } else {
- __ store_heap_oop(obj, val);
- }
- break;
- default :
- ShouldNotReachHere();
-
- }
-}
-
-Address TemplateTable::at_bcp(int offset) {
- assert(_desc->uses_bcp(), "inconsistent uses_bcp information");
- return Address(r13, offset);
-}
-
-void TemplateTable::patch_bytecode(Bytecodes::Code bc, Register bc_reg,
- Register temp_reg, bool load_bc_into_bc_reg/*=true*/,
- int byte_no) {
- if (!RewriteBytecodes) return;
- Label L_patch_done;
-
- switch (bc) {
- case Bytecodes::_fast_aputfield:
- case Bytecodes::_fast_bputfield:
- case Bytecodes::_fast_cputfield:
- case Bytecodes::_fast_dputfield:
- case Bytecodes::_fast_fputfield:
- case Bytecodes::_fast_iputfield:
- case Bytecodes::_fast_lputfield:
- case Bytecodes::_fast_sputfield:
- {
- // We skip bytecode quickening for putfield instructions when
- // the put_code written to the constant pool cache is zero.
- // This is required so that every execution of this instruction
- // calls out to InterpreterRuntime::resolve_get_put to do
- // additional, required work.
- assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range");
- assert(load_bc_into_bc_reg, "we use bc_reg as temp");
- __ get_cache_and_index_and_bytecode_at_bcp(temp_reg, bc_reg, temp_reg, byte_no, 1);
- __ movl(bc_reg, bc);
- __ cmpl(temp_reg, (int) 0);
- __ jcc(Assembler::zero, L_patch_done); // don't patch
- }
- break;
- default:
- assert(byte_no == -1, "sanity");
- // the pair bytecodes have already done the load.
- if (load_bc_into_bc_reg) {
- __ movl(bc_reg, bc);
- }
- }
-
- if (JvmtiExport::can_post_breakpoint()) {
- Label L_fast_patch;
- // if a breakpoint is present we can't rewrite the stream directly
- __ movzbl(temp_reg, at_bcp(0));
- __ cmpl(temp_reg, Bytecodes::_breakpoint);
- __ jcc(Assembler::notEqual, L_fast_patch);
- __ get_method(temp_reg);
- // Let breakpoint table handling rewrite to quicker bytecode
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::set_original_bytecode_at), temp_reg, r13, bc_reg);
-#ifndef ASSERT
- __ jmpb(L_patch_done);
-#else
- __ jmp(L_patch_done);
-#endif
- __ bind(L_fast_patch);
- }
-
-#ifdef ASSERT
- Label L_okay;
- __ load_unsigned_byte(temp_reg, at_bcp(0));
- __ cmpl(temp_reg, (int) Bytecodes::java_code(bc));
- __ jcc(Assembler::equal, L_okay);
- __ cmpl(temp_reg, bc_reg);
- __ jcc(Assembler::equal, L_okay);
- __ stop("patching the wrong bytecode");
- __ bind(L_okay);
-#endif
-
- // patch bytecode
- __ movb(at_bcp(0), bc_reg);
- __ bind(L_patch_done);
-}
-
-
-// Individual instructions
-
-void TemplateTable::nop() {
- transition(vtos, vtos);
- // nothing to do
-}
-
-void TemplateTable::shouldnotreachhere() {
- transition(vtos, vtos);
- __ stop("shouldnotreachhere bytecode");
-}
-
-void TemplateTable::aconst_null() {
- transition(vtos, atos);
- __ xorl(rax, rax);
-}
-
-void TemplateTable::iconst(int value) {
- transition(vtos, itos);
- if (value == 0) {
- __ xorl(rax, rax);
- } else {
- __ movl(rax, value);
- }
-}
-
-void TemplateTable::lconst(int value) {
- transition(vtos, ltos);
- if (value == 0) {
- __ xorl(rax, rax);
- } else {
- __ movl(rax, value);
- }
-}
-
-void TemplateTable::fconst(int value) {
- transition(vtos, ftos);
- static float one = 1.0f, two = 2.0f;
- switch (value) {
- case 0:
- __ xorps(xmm0, xmm0);
- break;
- case 1:
- __ movflt(xmm0, ExternalAddress((address) &one));
- break;
- case 2:
- __ movflt(xmm0, ExternalAddress((address) &two));
- break;
- default:
- ShouldNotReachHere();
- break;
- }
-}
-
-void TemplateTable::dconst(int value) {
- transition(vtos, dtos);
- static double one = 1.0;
- switch (value) {
- case 0:
- __ xorpd(xmm0, xmm0);
- break;
- case 1:
- __ movdbl(xmm0, ExternalAddress((address) &one));
- break;
- default:
- ShouldNotReachHere();
- break;
- }
-}
-
-void TemplateTable::bipush() {
- transition(vtos, itos);
- __ load_signed_byte(rax, at_bcp(1));
-}
-
-void TemplateTable::sipush() {
- transition(vtos, itos);
- __ load_unsigned_short(rax, at_bcp(1));
- __ bswapl(rax);
- __ sarl(rax, 16);
-}
-
-void TemplateTable::ldc(bool wide) {
- transition(vtos, vtos);
- Label call_ldc, notFloat, notClass, Done;
-
- if (wide) {
- __ get_unsigned_2_byte_index_at_bcp(rbx, 1);
- } else {
- __ load_unsigned_byte(rbx, at_bcp(1));
- }
-
- __ get_cpool_and_tags(rcx, rax);
- const int base_offset = ConstantPool::header_size() * wordSize;
- const int tags_offset = Array<u1>::base_offset_in_bytes();
-
- // get type
- __ movzbl(rdx, Address(rax, rbx, Address::times_1, tags_offset));
-
- // unresolved class - get the resolved class
- __ cmpl(rdx, JVM_CONSTANT_UnresolvedClass);
- __ jccb(Assembler::equal, call_ldc);
-
- // unresolved class in error state - call into runtime to throw the error
- // from the first resolution attempt
- __ cmpl(rdx, JVM_CONSTANT_UnresolvedClassInError);
- __ jccb(Assembler::equal, call_ldc);
-
- // resolved class - need to call vm to get java mirror of the class
- __ cmpl(rdx, JVM_CONSTANT_Class);
- __ jcc(Assembler::notEqual, notClass);
-
- __ bind(call_ldc);
- __ movl(c_rarg1, wide);
- call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::ldc), c_rarg1);
- __ push_ptr(rax);
- __ verify_oop(rax);
- __ jmp(Done);
-
- __ bind(notClass);
- __ cmpl(rdx, JVM_CONSTANT_Float);
- __ jccb(Assembler::notEqual, notFloat);
- // ftos
- __ movflt(xmm0, Address(rcx, rbx, Address::times_8, base_offset));
- __ push_f();
- __ jmp(Done);
-
- __ bind(notFloat);
-#ifdef ASSERT
- {
- Label L;
- __ cmpl(rdx, JVM_CONSTANT_Integer);
- __ jcc(Assembler::equal, L);
- // String and Object are rewritten to fast_aldc
- __ stop("unexpected tag type in ldc");
- __ bind(L);
- }
-#endif
- // itos JVM_CONSTANT_Integer only
- __ movl(rax, Address(rcx, rbx, Address::times_8, base_offset));
- __ push_i(rax);
- __ bind(Done);
-}
-
-// Fast path for caching oop constants.
-void TemplateTable::fast_aldc(bool wide) {
- transition(vtos, atos);
-
- Register result = rax;
- Register tmp = rdx;
- int index_size = wide ? sizeof(u2) : sizeof(u1);
-
- Label resolved;
-
- // We are resolved if the resolved reference cache entry contains a
- // non-null object (String, MethodType, etc.)
- assert_different_registers(result, tmp);
- __ get_cache_index_at_bcp(tmp, 1, index_size);
- __ load_resolved_reference_at_index(result, tmp);
- __ testl(result, result);
- __ jcc(Assembler::notZero, resolved);
-
- address entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_ldc);
-
- // first time invocation - must resolve first
- __ movl(tmp, (int)bytecode());
- __ call_VM(result, entry, tmp);
-
- __ bind(resolved);
-
- if (VerifyOops) {
- __ verify_oop(result);
- }
-}
-
-void TemplateTable::ldc2_w() {
- transition(vtos, vtos);
- Label Long, Done;
- __ get_unsigned_2_byte_index_at_bcp(rbx, 1);
-
- __ get_cpool_and_tags(rcx, rax);
- const int base_offset = ConstantPool::header_size() * wordSize;
- const int tags_offset = Array<u1>::base_offset_in_bytes();
-
- // get type
- __ cmpb(Address(rax, rbx, Address::times_1, tags_offset),
- JVM_CONSTANT_Double);
- __ jccb(Assembler::notEqual, Long);
- // dtos
- __ movdbl(xmm0, Address(rcx, rbx, Address::times_8, base_offset));
- __ push_d();
- __ jmpb(Done);
-
- __ bind(Long);
- // ltos
- __ movq(rax, Address(rcx, rbx, Address::times_8, base_offset));
- __ push_l();
-
- __ bind(Done);
-}
-
-void TemplateTable::locals_index(Register reg, int offset) {
- __ load_unsigned_byte(reg, at_bcp(offset));
- __ negptr(reg);
-}
-
-void TemplateTable::iload() {
- transition(vtos, itos);
- if (RewriteFrequentPairs) {
- Label rewrite, done;
- const Register bc = c_rarg3;
- assert(rbx != bc, "register damaged");
-
- // get next byte
- __ load_unsigned_byte(rbx,
- at_bcp(Bytecodes::length_for(Bytecodes::_iload)));
- // if _iload, wait to rewrite to iload2. We only want to rewrite the
- // last two iloads in a pair. Comparing against fast_iload means that
- // the next bytecode is neither an iload or a caload, and therefore
- // an iload pair.
- __ cmpl(rbx, Bytecodes::_iload);
- __ jcc(Assembler::equal, done);
-
- __ cmpl(rbx, Bytecodes::_fast_iload);
- __ movl(bc, Bytecodes::_fast_iload2);
- __ jccb(Assembler::equal, rewrite);
-
- // if _caload, rewrite to fast_icaload
- __ cmpl(rbx, Bytecodes::_caload);
- __ movl(bc, Bytecodes::_fast_icaload);
- __ jccb(Assembler::equal, rewrite);
-
- // rewrite so iload doesn't check again.
- __ movl(bc, Bytecodes::_fast_iload);
-
- // rewrite
- // bc: fast bytecode
- __ bind(rewrite);
- patch_bytecode(Bytecodes::_iload, bc, rbx, false);
- __ bind(done);
- }
-
- // Get the local value into tos
- locals_index(rbx);
- __ movl(rax, iaddress(rbx));
-}
-
-void TemplateTable::fast_iload2() {
- transition(vtos, itos);
- locals_index(rbx);
- __ movl(rax, iaddress(rbx));
- __ push(itos);
- locals_index(rbx, 3);
- __ movl(rax, iaddress(rbx));
-}
-
-void TemplateTable::fast_iload() {
- transition(vtos, itos);
- locals_index(rbx);
- __ movl(rax, iaddress(rbx));
-}
-
-void TemplateTable::lload() {
- transition(vtos, ltos);
- locals_index(rbx);
- __ movq(rax, laddress(rbx));
-}
-
-void TemplateTable::fload() {
- transition(vtos, ftos);
- locals_index(rbx);
- __ movflt(xmm0, faddress(rbx));
-}
-
-void TemplateTable::dload() {
- transition(vtos, dtos);
- locals_index(rbx);
- __ movdbl(xmm0, daddress(rbx));
-}
-
-void TemplateTable::aload() {
- transition(vtos, atos);
- locals_index(rbx);
- __ movptr(rax, aaddress(rbx));
-}
-
-void TemplateTable::locals_index_wide(Register reg) {
- __ load_unsigned_short(reg, at_bcp(2));
- __ bswapl(reg);
- __ shrl(reg, 16);
- __ negptr(reg);
-}
-
-void TemplateTable::wide_iload() {
- transition(vtos, itos);
- locals_index_wide(rbx);
- __ movl(rax, iaddress(rbx));
-}
-
-void TemplateTable::wide_lload() {
- transition(vtos, ltos);
- locals_index_wide(rbx);
- __ movq(rax, laddress(rbx));
-}
-
-void TemplateTable::wide_fload() {
- transition(vtos, ftos);
- locals_index_wide(rbx);
- __ movflt(xmm0, faddress(rbx));
-}
-
-void TemplateTable::wide_dload() {
- transition(vtos, dtos);
- locals_index_wide(rbx);
- __ movdbl(xmm0, daddress(rbx));
-}
-
-void TemplateTable::wide_aload() {
- transition(vtos, atos);
- locals_index_wide(rbx);
- __ movptr(rax, aaddress(rbx));
-}
-
-void TemplateTable::index_check(Register array, Register index) {
- // destroys rbx
- // check array
- __ null_check(array, arrayOopDesc::length_offset_in_bytes());
- // sign extend index for use by indexed load
- __ movl2ptr(index, index);
- // check index
- __ cmpl(index, Address(array, arrayOopDesc::length_offset_in_bytes()));
- if (index != rbx) {
- // ??? convention: move aberrant index into ebx for exception message
- assert(rbx != array, "different registers");
- __ movl(rbx, index);
- }
- __ jump_cc(Assembler::aboveEqual,
- ExternalAddress(Interpreter::_throw_ArrayIndexOutOfBoundsException_entry));
-}
-
-void TemplateTable::iaload() {
- transition(itos, itos);
- __ pop_ptr(rdx);
- // eax: index
- // rdx: array
- index_check(rdx, rax); // kills rbx
- __ movl(rax, Address(rdx, rax,
- Address::times_4,
- arrayOopDesc::base_offset_in_bytes(T_INT)));
-}
-
-void TemplateTable::laload() {
- transition(itos, ltos);
- __ pop_ptr(rdx);
- // eax: index
- // rdx: array
- index_check(rdx, rax); // kills rbx
- __ movq(rax, Address(rdx, rbx,
- Address::times_8,
- arrayOopDesc::base_offset_in_bytes(T_LONG)));
-}
-
-void TemplateTable::faload() {
- transition(itos, ftos);
- __ pop_ptr(rdx);
- // eax: index
- // rdx: array
- index_check(rdx, rax); // kills rbx
- __ movflt(xmm0, Address(rdx, rax,
- Address::times_4,
- arrayOopDesc::base_offset_in_bytes(T_FLOAT)));
-}
-
-void TemplateTable::daload() {
- transition(itos, dtos);
- __ pop_ptr(rdx);
- // eax: index
- // rdx: array
- index_check(rdx, rax); // kills rbx
- __ movdbl(xmm0, Address(rdx, rax,
- Address::times_8,
- arrayOopDesc::base_offset_in_bytes(T_DOUBLE)));
-}
-
-void TemplateTable::aaload() {
- transition(itos, atos);
- __ pop_ptr(rdx);
- // eax: index
- // rdx: array
- index_check(rdx, rax); // kills rbx
- __ load_heap_oop(rax, Address(rdx, rax,
- UseCompressedOops ? Address::times_4 : Address::times_8,
- arrayOopDesc::base_offset_in_bytes(T_OBJECT)));
-}
-
-void TemplateTable::baload() {
- transition(itos, itos);
- __ pop_ptr(rdx);
- // eax: index
- // rdx: array
- index_check(rdx, rax); // kills rbx
- __ load_signed_byte(rax,
- Address(rdx, rax,
- Address::times_1,
- arrayOopDesc::base_offset_in_bytes(T_BYTE)));
-}
-
-void TemplateTable::caload() {
- transition(itos, itos);
- __ pop_ptr(rdx);
- // eax: index
- // rdx: array
- index_check(rdx, rax); // kills rbx
- __ load_unsigned_short(rax,
- Address(rdx, rax,
- Address::times_2,
- arrayOopDesc::base_offset_in_bytes(T_CHAR)));
-}
-
-// iload followed by caload frequent pair
-void TemplateTable::fast_icaload() {
- transition(vtos, itos);
- // load index out of locals
- locals_index(rbx);
- __ movl(rax, iaddress(rbx));
-
- // eax: index
- // rdx: array
- __ pop_ptr(rdx);
- index_check(rdx, rax); // kills rbx
- __ load_unsigned_short(rax,
- Address(rdx, rax,
- Address::times_2,
- arrayOopDesc::base_offset_in_bytes(T_CHAR)));
-}
-
-void TemplateTable::saload() {
- transition(itos, itos);
- __ pop_ptr(rdx);
- // eax: index
- // rdx: array
- index_check(rdx, rax); // kills rbx
- __ load_signed_short(rax,
- Address(rdx, rax,
- Address::times_2,
- arrayOopDesc::base_offset_in_bytes(T_SHORT)));
-}
-
-void TemplateTable::iload(int n) {
- transition(vtos, itos);
- __ movl(rax, iaddress(n));
-}
-
-void TemplateTable::lload(int n) {
- transition(vtos, ltos);
- __ movq(rax, laddress(n));
-}
-
-void TemplateTable::fload(int n) {
- transition(vtos, ftos);
- __ movflt(xmm0, faddress(n));
-}
-
-void TemplateTable::dload(int n) {
- transition(vtos, dtos);
- __ movdbl(xmm0, daddress(n));
-}
-
-void TemplateTable::aload(int n) {
- transition(vtos, atos);
- __ movptr(rax, aaddress(n));
-}
-
-void TemplateTable::aload_0() {
- transition(vtos, atos);
- // According to bytecode histograms, the pairs:
- //
- // _aload_0, _fast_igetfield
- // _aload_0, _fast_agetfield
- // _aload_0, _fast_fgetfield
- //
- // occur frequently. If RewriteFrequentPairs is set, the (slow)
- // _aload_0 bytecode checks if the next bytecode is either
- // _fast_igetfield, _fast_agetfield or _fast_fgetfield and then
- // rewrites the current bytecode into a pair bytecode; otherwise it
- // rewrites the current bytecode into _fast_aload_0 that doesn't do
- // the pair check anymore.
- //
- // Note: If the next bytecode is _getfield, the rewrite must be
- // delayed, otherwise we may miss an opportunity for a pair.
- //
- // Also rewrite frequent pairs
- // aload_0, aload_1
- // aload_0, iload_1
- // These bytecodes with a small amount of code are most profitable
- // to rewrite
- if (RewriteFrequentPairs) {
- Label rewrite, done;
- const Register bc = c_rarg3;
- assert(rbx != bc, "register damaged");
- // get next byte
- __ load_unsigned_byte(rbx,
- at_bcp(Bytecodes::length_for(Bytecodes::_aload_0)));
-
- // do actual aload_0
- aload(0);
-
- // if _getfield then wait with rewrite
- __ cmpl(rbx, Bytecodes::_getfield);
- __ jcc(Assembler::equal, done);
-
- // if _igetfield then reqrite to _fast_iaccess_0
- assert(Bytecodes::java_code(Bytecodes::_fast_iaccess_0) ==
- Bytecodes::_aload_0,
- "fix bytecode definition");
- __ cmpl(rbx, Bytecodes::_fast_igetfield);
- __ movl(bc, Bytecodes::_fast_iaccess_0);
- __ jccb(Assembler::equal, rewrite);
-
- // if _agetfield then reqrite to _fast_aaccess_0
- assert(Bytecodes::java_code(Bytecodes::_fast_aaccess_0) ==
- Bytecodes::_aload_0,
- "fix bytecode definition");
- __ cmpl(rbx, Bytecodes::_fast_agetfield);
- __ movl(bc, Bytecodes::_fast_aaccess_0);
- __ jccb(Assembler::equal, rewrite);
-
- // if _fgetfield then reqrite to _fast_faccess_0
- assert(Bytecodes::java_code(Bytecodes::_fast_faccess_0) ==
- Bytecodes::_aload_0,
- "fix bytecode definition");
- __ cmpl(rbx, Bytecodes::_fast_fgetfield);
- __ movl(bc, Bytecodes::_fast_faccess_0);
- __ jccb(Assembler::equal, rewrite);
-
- // else rewrite to _fast_aload0
- assert(Bytecodes::java_code(Bytecodes::_fast_aload_0) ==
- Bytecodes::_aload_0,
- "fix bytecode definition");
- __ movl(bc, Bytecodes::_fast_aload_0);
-
- // rewrite
- // bc: fast bytecode
- __ bind(rewrite);
- patch_bytecode(Bytecodes::_aload_0, bc, rbx, false);
-
- __ bind(done);
- } else {
- aload(0);
- }
-}
-
-void TemplateTable::istore() {
- transition(itos, vtos);
- locals_index(rbx);
- __ movl(iaddress(rbx), rax);
-}
-
-void TemplateTable::lstore() {
- transition(ltos, vtos);
- locals_index(rbx);
- __ movq(laddress(rbx), rax);
-}
-
-void TemplateTable::fstore() {
- transition(ftos, vtos);
- locals_index(rbx);
- __ movflt(faddress(rbx), xmm0);
-}
-
-void TemplateTable::dstore() {
- transition(dtos, vtos);
- locals_index(rbx);
- __ movdbl(daddress(rbx), xmm0);
-}
-
-void TemplateTable::astore() {
- transition(vtos, vtos);
- __ pop_ptr(rax);
- locals_index(rbx);
- __ movptr(aaddress(rbx), rax);
-}
-
-void TemplateTable::wide_istore() {
- transition(vtos, vtos);
- __ pop_i();
- locals_index_wide(rbx);
- __ movl(iaddress(rbx), rax);
-}
-
-void TemplateTable::wide_lstore() {
- transition(vtos, vtos);
- __ pop_l();
- locals_index_wide(rbx);
- __ movq(laddress(rbx), rax);
-}
-
-void TemplateTable::wide_fstore() {
- transition(vtos, vtos);
- __ pop_f();
- locals_index_wide(rbx);
- __ movflt(faddress(rbx), xmm0);
-}
-
-void TemplateTable::wide_dstore() {
- transition(vtos, vtos);
- __ pop_d();
- locals_index_wide(rbx);
- __ movdbl(daddress(rbx), xmm0);
-}
-
-void TemplateTable::wide_astore() {
- transition(vtos, vtos);
- __ pop_ptr(rax);
- locals_index_wide(rbx);
- __ movptr(aaddress(rbx), rax);
-}
-
-void TemplateTable::iastore() {
- transition(itos, vtos);
- __ pop_i(rbx);
- __ pop_ptr(rdx);
- // eax: value
- // ebx: index
- // rdx: array
- index_check(rdx, rbx); // prefer index in ebx
- __ movl(Address(rdx, rbx,
- Address::times_4,
- arrayOopDesc::base_offset_in_bytes(T_INT)),
- rax);
-}
-
-void TemplateTable::lastore() {
- transition(ltos, vtos);
- __ pop_i(rbx);
- __ pop_ptr(rdx);
- // rax: value
- // ebx: index
- // rdx: array
- index_check(rdx, rbx); // prefer index in ebx
- __ movq(Address(rdx, rbx,
- Address::times_8,
- arrayOopDesc::base_offset_in_bytes(T_LONG)),
- rax);
-}
-
-void TemplateTable::fastore() {
- transition(ftos, vtos);
- __ pop_i(rbx);
- __ pop_ptr(rdx);
- // xmm0: value
- // ebx: index
- // rdx: array
- index_check(rdx, rbx); // prefer index in ebx
- __ movflt(Address(rdx, rbx,
- Address::times_4,
- arrayOopDesc::base_offset_in_bytes(T_FLOAT)),
- xmm0);
-}
-
-void TemplateTable::dastore() {
- transition(dtos, vtos);
- __ pop_i(rbx);
- __ pop_ptr(rdx);
- // xmm0: value
- // ebx: index
- // rdx: array
- index_check(rdx, rbx); // prefer index in ebx
- __ movdbl(Address(rdx, rbx,
- Address::times_8,
- arrayOopDesc::base_offset_in_bytes(T_DOUBLE)),
- xmm0);
-}
-
-void TemplateTable::aastore() {
- Label is_null, ok_is_subtype, done;
- transition(vtos, vtos);
- // stack: ..., array, index, value
- __ movptr(rax, at_tos()); // value
- __ movl(rcx, at_tos_p1()); // index
- __ movptr(rdx, at_tos_p2()); // array
-
- Address element_address(rdx, rcx,
- UseCompressedOops? Address::times_4 : Address::times_8,
- arrayOopDesc::base_offset_in_bytes(T_OBJECT));
-
- index_check(rdx, rcx); // kills rbx
- // do array store check - check for NULL value first
- __ testptr(rax, rax);
- __ jcc(Assembler::zero, is_null);
-
- // Move subklass into rbx
- __ load_klass(rbx, rax);
- // Move superklass into rax
- __ load_klass(rax, rdx);
- __ movptr(rax, Address(rax,
- ObjArrayKlass::element_klass_offset()));
- // Compress array + index*oopSize + 12 into a single register. Frees rcx.
- __ lea(rdx, element_address);
-
- // Generate subtype check. Blows rcx, rdi
- // Superklass in rax. Subklass in rbx.
- __ gen_subtype_check(rbx, ok_is_subtype);
-
- // Come here on failure
- // object is at TOS
- __ jump(ExternalAddress(Interpreter::_throw_ArrayStoreException_entry));
-
- // Come here on success
- __ bind(ok_is_subtype);
-
- // Get the value we will store
- __ movptr(rax, at_tos());
- // Now store using the appropriate barrier
- do_oop_store(_masm, Address(rdx, 0), rax, _bs->kind(), true);
- __ jmp(done);
-
- // Have a NULL in rax, rdx=array, ecx=index. Store NULL at ary[idx]
- __ bind(is_null);
- __ profile_null_seen(rbx);
-
- // Store a NULL
- do_oop_store(_masm, element_address, noreg, _bs->kind(), true);
-
- // Pop stack arguments
- __ bind(done);
- __ addptr(rsp, 3 * Interpreter::stackElementSize);
-}
-
-void TemplateTable::bastore() {
- transition(itos, vtos);
- __ pop_i(rbx);
- __ pop_ptr(rdx);
- // eax: value
- // ebx: index
- // rdx: array
- index_check(rdx, rbx); // prefer index in ebx
- __ movb(Address(rdx, rbx,
- Address::times_1,
- arrayOopDesc::base_offset_in_bytes(T_BYTE)),
- rax);
-}
-
-void TemplateTable::castore() {
- transition(itos, vtos);
- __ pop_i(rbx);
- __ pop_ptr(rdx);
- // eax: value
- // ebx: index
- // rdx: array
- index_check(rdx, rbx); // prefer index in ebx
- __ movw(Address(rdx, rbx,
- Address::times_2,
- arrayOopDesc::base_offset_in_bytes(T_CHAR)),
- rax);
-}
-
-void TemplateTable::sastore() {
- castore();
-}
-
-void TemplateTable::istore(int n) {
- transition(itos, vtos);
- __ movl(iaddress(n), rax);
-}
-
-void TemplateTable::lstore(int n) {
- transition(ltos, vtos);
- __ movq(laddress(n), rax);
-}
-
-void TemplateTable::fstore(int n) {
- transition(ftos, vtos);
- __ movflt(faddress(n), xmm0);
-}
-
-void TemplateTable::dstore(int n) {
- transition(dtos, vtos);
- __ movdbl(daddress(n), xmm0);
-}
-
-void TemplateTable::astore(int n) {
- transition(vtos, vtos);
- __ pop_ptr(rax);
- __ movptr(aaddress(n), rax);
-}
-
-void TemplateTable::pop() {
- transition(vtos, vtos);
- __ addptr(rsp, Interpreter::stackElementSize);
-}
-
-void TemplateTable::pop2() {
- transition(vtos, vtos);
- __ addptr(rsp, 2 * Interpreter::stackElementSize);
-}
-
-void TemplateTable::dup() {
- transition(vtos, vtos);
- __ load_ptr(0, rax);
- __ push_ptr(rax);
- // stack: ..., a, a
-}
-
-void TemplateTable::dup_x1() {
- transition(vtos, vtos);
- // stack: ..., a, b
- __ load_ptr( 0, rax); // load b
- __ load_ptr( 1, rcx); // load a
- __ store_ptr(1, rax); // store b
- __ store_ptr(0, rcx); // store a
- __ push_ptr(rax); // push b
- // stack: ..., b, a, b
-}
-
-void TemplateTable::dup_x2() {
- transition(vtos, vtos);
- // stack: ..., a, b, c
- __ load_ptr( 0, rax); // load c
- __ load_ptr( 2, rcx); // load a
- __ store_ptr(2, rax); // store c in a
- __ push_ptr(rax); // push c
- // stack: ..., c, b, c, c
- __ load_ptr( 2, rax); // load b
- __ store_ptr(2, rcx); // store a in b
- // stack: ..., c, a, c, c
- __ store_ptr(1, rax); // store b in c
- // stack: ..., c, a, b, c
-}
-
-void TemplateTable::dup2() {
- transition(vtos, vtos);
- // stack: ..., a, b
- __ load_ptr(1, rax); // load a
- __ push_ptr(rax); // push a
- __ load_ptr(1, rax); // load b
- __ push_ptr(rax); // push b
- // stack: ..., a, b, a, b
-}
-
-void TemplateTable::dup2_x1() {
- transition(vtos, vtos);
- // stack: ..., a, b, c
- __ load_ptr( 0, rcx); // load c
- __ load_ptr( 1, rax); // load b
- __ push_ptr(rax); // push b
- __ push_ptr(rcx); // push c
- // stack: ..., a, b, c, b, c
- __ store_ptr(3, rcx); // store c in b
- // stack: ..., a, c, c, b, c
- __ load_ptr( 4, rcx); // load a
- __ store_ptr(2, rcx); // store a in 2nd c
- // stack: ..., a, c, a, b, c
- __ store_ptr(4, rax); // store b in a
- // stack: ..., b, c, a, b, c
-}
-
-void TemplateTable::dup2_x2() {
- transition(vtos, vtos);
- // stack: ..., a, b, c, d
- __ load_ptr( 0, rcx); // load d
- __ load_ptr( 1, rax); // load c
- __ push_ptr(rax); // push c
- __ push_ptr(rcx); // push d
- // stack: ..., a, b, c, d, c, d
- __ load_ptr( 4, rax); // load b
- __ store_ptr(2, rax); // store b in d
- __ store_ptr(4, rcx); // store d in b
- // stack: ..., a, d, c, b, c, d
- __ load_ptr( 5, rcx); // load a
- __ load_ptr( 3, rax); // load c
- __ store_ptr(3, rcx); // store a in c
- __ store_ptr(5, rax); // store c in a
- // stack: ..., c, d, a, b, c, d
-}
-
-void TemplateTable::swap() {
- transition(vtos, vtos);
- // stack: ..., a, b
- __ load_ptr( 1, rcx); // load a
- __ load_ptr( 0, rax); // load b
- __ store_ptr(0, rcx); // store a in b
- __ store_ptr(1, rax); // store b in a
- // stack: ..., b, a
-}
-
-void TemplateTable::iop2(Operation op) {
- transition(itos, itos);
- switch (op) {
- case add : __ pop_i(rdx); __ addl (rax, rdx); break;
- case sub : __ movl(rdx, rax); __ pop_i(rax); __ subl (rax, rdx); break;
- case mul : __ pop_i(rdx); __ imull(rax, rdx); break;
- case _and : __ pop_i(rdx); __ andl (rax, rdx); break;
- case _or : __ pop_i(rdx); __ orl (rax, rdx); break;
- case _xor : __ pop_i(rdx); __ xorl (rax, rdx); break;
- case shl : __ movl(rcx, rax); __ pop_i(rax); __ shll (rax); break;
- case shr : __ movl(rcx, rax); __ pop_i(rax); __ sarl (rax); break;
- case ushr : __ movl(rcx, rax); __ pop_i(rax); __ shrl (rax); break;
- default : ShouldNotReachHere();
- }
-}
-
-void TemplateTable::lop2(Operation op) {
- transition(ltos, ltos);
- switch (op) {
- case add : __ pop_l(rdx); __ addptr(rax, rdx); break;
- case sub : __ mov(rdx, rax); __ pop_l(rax); __ subptr(rax, rdx); break;
- case _and : __ pop_l(rdx); __ andptr(rax, rdx); break;
- case _or : __ pop_l(rdx); __ orptr (rax, rdx); break;
- case _xor : __ pop_l(rdx); __ xorptr(rax, rdx); break;
- default : ShouldNotReachHere();
- }
-}
-
-void TemplateTable::idiv() {
- transition(itos, itos);
- __ movl(rcx, rax);
- __ pop_i(rax);
- // Note: could xor eax and ecx and compare with (-1 ^ min_int). If
- // they are not equal, one could do a normal division (no correction
- // needed), which may speed up this implementation for the common case.
- // (see also JVM spec., p.243 & p.271)
- __ corrected_idivl(rcx);
-}
-
-void TemplateTable::irem() {
- transition(itos, itos);
- __ movl(rcx, rax);
- __ pop_i(rax);
- // Note: could xor eax and ecx and compare with (-1 ^ min_int). If
- // they are not equal, one could do a normal division (no correction
- // needed), which may speed up this implementation for the common case.
- // (see also JVM spec., p.243 & p.271)
- __ corrected_idivl(rcx);
- __ movl(rax, rdx);
-}
-
-void TemplateTable::lmul() {
- transition(ltos, ltos);
- __ pop_l(rdx);
- __ imulq(rax, rdx);
-}
-
-void TemplateTable::ldiv() {
- transition(ltos, ltos);
- __ mov(rcx, rax);
- __ pop_l(rax);
- // generate explicit div0 check
- __ testq(rcx, rcx);
- __ jump_cc(Assembler::zero,
- ExternalAddress(Interpreter::_throw_ArithmeticException_entry));
- // Note: could xor rax and rcx and compare with (-1 ^ min_int). If
- // they are not equal, one could do a normal division (no correction
- // needed), which may speed up this implementation for the common case.
- // (see also JVM spec., p.243 & p.271)
- __ corrected_idivq(rcx); // kills rbx
-}
-
-void TemplateTable::lrem() {
- transition(ltos, ltos);
- __ mov(rcx, rax);
- __ pop_l(rax);
- __ testq(rcx, rcx);
- __ jump_cc(Assembler::zero,
- ExternalAddress(Interpreter::_throw_ArithmeticException_entry));
- // Note: could xor rax and rcx and compare with (-1 ^ min_int). If
- // they are not equal, one could do a normal division (no correction
- // needed), which may speed up this implementation for the common case.
- // (see also JVM spec., p.243 & p.271)
- __ corrected_idivq(rcx); // kills rbx
- __ mov(rax, rdx);
-}
-
-void TemplateTable::lshl() {
- transition(itos, ltos);
- __ movl(rcx, rax); // get shift count
- __ pop_l(rax); // get shift value
- __ shlq(rax);
-}
-
-void TemplateTable::lshr() {
- transition(itos, ltos);
- __ movl(rcx, rax); // get shift count
- __ pop_l(rax); // get shift value
- __ sarq(rax);
-}
-
-void TemplateTable::lushr() {
- transition(itos, ltos);
- __ movl(rcx, rax); // get shift count
- __ pop_l(rax); // get shift value
- __ shrq(rax);
-}
-
-void TemplateTable::fop2(Operation op) {
- transition(ftos, ftos);
- switch (op) {
- case add:
- __ addss(xmm0, at_rsp());
- __ addptr(rsp, Interpreter::stackElementSize);
- break;
- case sub:
- __ movflt(xmm1, xmm0);
- __ pop_f(xmm0);
- __ subss(xmm0, xmm1);
- break;
- case mul:
- __ mulss(xmm0, at_rsp());
- __ addptr(rsp, Interpreter::stackElementSize);
- break;
- case div:
- __ movflt(xmm1, xmm0);
- __ pop_f(xmm0);
- __ divss(xmm0, xmm1);
- break;
- case rem:
- __ movflt(xmm1, xmm0);
- __ pop_f(xmm0);
- __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::frem), 2);
- break;
- default:
- ShouldNotReachHere();
- break;
- }
-}
-
-void TemplateTable::dop2(Operation op) {
- transition(dtos, dtos);
- switch (op) {
- case add:
- __ addsd(xmm0, at_rsp());
- __ addptr(rsp, 2 * Interpreter::stackElementSize);
- break;
- case sub:
- __ movdbl(xmm1, xmm0);
- __ pop_d(xmm0);
- __ subsd(xmm0, xmm1);
- break;
- case mul:
- __ mulsd(xmm0, at_rsp());
- __ addptr(rsp, 2 * Interpreter::stackElementSize);
- break;
- case div:
- __ movdbl(xmm1, xmm0);
- __ pop_d(xmm0);
- __ divsd(xmm0, xmm1);
- break;
- case rem:
- __ movdbl(xmm1, xmm0);
- __ pop_d(xmm0);
- __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::drem), 2);
- break;
- default:
- ShouldNotReachHere();
- break;
- }
-}
-
-void TemplateTable::ineg() {
- transition(itos, itos);
- __ negl(rax);
-}
-
-void TemplateTable::lneg() {
- transition(ltos, ltos);
- __ negq(rax);
-}
-
-// Note: 'double' and 'long long' have 32-bits alignment on x86.
-static jlong* double_quadword(jlong *adr, jlong lo, jlong hi) {
- // Use the expression (adr)&(~0xF) to provide 128-bits aligned address
- // of 128-bits operands for SSE instructions.
- jlong *operand = (jlong*)(((intptr_t)adr)&((intptr_t)(~0xF)));
- // Store the value to a 128-bits operand.
- operand[0] = lo;
- operand[1] = hi;
- return operand;
-}
-
-// Buffer for 128-bits masks used by SSE instructions.
-static jlong float_signflip_pool[2*2];
-static jlong double_signflip_pool[2*2];
-
-void TemplateTable::fneg() {
- transition(ftos, ftos);
- static jlong *float_signflip = double_quadword(&float_signflip_pool[1], 0x8000000080000000, 0x8000000080000000);
- __ xorps(xmm0, ExternalAddress((address) float_signflip));
-}
-
-void TemplateTable::dneg() {
- transition(dtos, dtos);
- static jlong *double_signflip = double_quadword(&double_signflip_pool[1], 0x8000000000000000, 0x8000000000000000);
- __ xorpd(xmm0, ExternalAddress((address) double_signflip));
-}
-
-void TemplateTable::iinc() {
- transition(vtos, vtos);
- __ load_signed_byte(rdx, at_bcp(2)); // get constant
- locals_index(rbx);
- __ addl(iaddress(rbx), rdx);
-}
-
-void TemplateTable::wide_iinc() {
- transition(vtos, vtos);
- __ movl(rdx, at_bcp(4)); // get constant
- locals_index_wide(rbx);
- __ bswapl(rdx); // swap bytes & sign-extend constant
- __ sarl(rdx, 16);
- __ addl(iaddress(rbx), rdx);
- // Note: should probably use only one movl to get both
- // the index and the constant -> fix this
-}
-
-void TemplateTable::convert() {
- // Checking
-#ifdef ASSERT
- {
- TosState tos_in = ilgl;
- TosState tos_out = ilgl;
- switch (bytecode()) {
- case Bytecodes::_i2l: // fall through
- case Bytecodes::_i2f: // fall through
- case Bytecodes::_i2d: // fall through
- case Bytecodes::_i2b: // fall through
- case Bytecodes::_i2c: // fall through
- case Bytecodes::_i2s: tos_in = itos; break;
- case Bytecodes::_l2i: // fall through
- case Bytecodes::_l2f: // fall through
- case Bytecodes::_l2d: tos_in = ltos; break;
- case Bytecodes::_f2i: // fall through
- case Bytecodes::_f2l: // fall through
- case Bytecodes::_f2d: tos_in = ftos; break;
- case Bytecodes::_d2i: // fall through
- case Bytecodes::_d2l: // fall through
- case Bytecodes::_d2f: tos_in = dtos; break;
- default : ShouldNotReachHere();
- }
- switch (bytecode()) {
- case Bytecodes::_l2i: // fall through
- case Bytecodes::_f2i: // fall through
- case Bytecodes::_d2i: // fall through
- case Bytecodes::_i2b: // fall through
- case Bytecodes::_i2c: // fall through
- case Bytecodes::_i2s: tos_out = itos; break;
- case Bytecodes::_i2l: // fall through
- case Bytecodes::_f2l: // fall through
- case Bytecodes::_d2l: tos_out = ltos; break;
- case Bytecodes::_i2f: // fall through
- case Bytecodes::_l2f: // fall through
- case Bytecodes::_d2f: tos_out = ftos; break;
- case Bytecodes::_i2d: // fall through
- case Bytecodes::_l2d: // fall through
- case Bytecodes::_f2d: tos_out = dtos; break;
- default : ShouldNotReachHere();
- }
- transition(tos_in, tos_out);
- }
-#endif // ASSERT
-
- static const int64_t is_nan = 0x8000000000000000L;
-
- // Conversion
- switch (bytecode()) {
- case Bytecodes::_i2l:
- __ movslq(rax, rax);
- break;
- case Bytecodes::_i2f:
- __ cvtsi2ssl(xmm0, rax);
- break;
- case Bytecodes::_i2d:
- __ cvtsi2sdl(xmm0, rax);
- break;
- case Bytecodes::_i2b:
- __ movsbl(rax, rax);
- break;
- case Bytecodes::_i2c:
- __ movzwl(rax, rax);
- break;
- case Bytecodes::_i2s:
- __ movswl(rax, rax);
- break;
- case Bytecodes::_l2i:
- __ movl(rax, rax);
- break;
- case Bytecodes::_l2f:
- __ cvtsi2ssq(xmm0, rax);
- break;
- case Bytecodes::_l2d:
- __ cvtsi2sdq(xmm0, rax);
- break;
- case Bytecodes::_f2i:
- {
- Label L;
- __ cvttss2sil(rax, xmm0);
- __ cmpl(rax, 0x80000000); // NaN or overflow/underflow?
- __ jcc(Assembler::notEqual, L);
- __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2i), 1);
- __ bind(L);
- }
- break;
- case Bytecodes::_f2l:
- {
- Label L;
- __ cvttss2siq(rax, xmm0);
- // NaN or overflow/underflow?
- __ cmp64(rax, ExternalAddress((address) &is_nan));
- __ jcc(Assembler::notEqual, L);
- __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2l), 1);
- __ bind(L);
- }
- break;
- case Bytecodes::_f2d:
- __ cvtss2sd(xmm0, xmm0);
- break;
- case Bytecodes::_d2i:
- {
- Label L;
- __ cvttsd2sil(rax, xmm0);
- __ cmpl(rax, 0x80000000); // NaN or overflow/underflow?
- __ jcc(Assembler::notEqual, L);
- __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2i), 1);
- __ bind(L);
- }
- break;
- case Bytecodes::_d2l:
- {
- Label L;
- __ cvttsd2siq(rax, xmm0);
- // NaN or overflow/underflow?
- __ cmp64(rax, ExternalAddress((address) &is_nan));
- __ jcc(Assembler::notEqual, L);
- __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2l), 1);
- __ bind(L);
- }
- break;
- case Bytecodes::_d2f:
- __ cvtsd2ss(xmm0, xmm0);
- break;
- default:
- ShouldNotReachHere();
- }
-}
-
-void TemplateTable::lcmp() {
- transition(ltos, itos);
- Label done;
- __ pop_l(rdx);
- __ cmpq(rdx, rax);
- __ movl(rax, -1);
- __ jccb(Assembler::less, done);
- __ setb(Assembler::notEqual, rax);
- __ movzbl(rax, rax);
- __ bind(done);
-}
-
-void TemplateTable::float_cmp(bool is_float, int unordered_result) {
- Label done;
- if (is_float) {
- // XXX get rid of pop here, use ... reg, mem32
- __ pop_f(xmm1);
- __ ucomiss(xmm1, xmm0);
- } else {
- // XXX get rid of pop here, use ... reg, mem64
- __ pop_d(xmm1);
- __ ucomisd(xmm1, xmm0);
- }
- if (unordered_result < 0) {
- __ movl(rax, -1);
- __ jccb(Assembler::parity, done);
- __ jccb(Assembler::below, done);
- __ setb(Assembler::notEqual, rdx);
- __ movzbl(rax, rdx);
- } else {
- __ movl(rax, 1);
- __ jccb(Assembler::parity, done);
- __ jccb(Assembler::above, done);
- __ movl(rax, 0);
- __ jccb(Assembler::equal, done);
- __ decrementl(rax);
- }
- __ bind(done);
-}
-
-void TemplateTable::branch(bool is_jsr, bool is_wide) {
- __ get_method(rcx); // rcx holds method
- __ profile_taken_branch(rax, rbx); // rax holds updated MDP, rbx
- // holds bumped taken count
-
- const ByteSize be_offset = MethodCounters::backedge_counter_offset() +
- InvocationCounter::counter_offset();
- const ByteSize inv_offset = MethodCounters::invocation_counter_offset() +
- InvocationCounter::counter_offset();
-
- // Load up edx with the branch displacement
- if (is_wide) {
- __ movl(rdx, at_bcp(1));
- } else {
- __ load_signed_short(rdx, at_bcp(1));
- }
- __ bswapl(rdx);
-
- if (!is_wide) {
- __ sarl(rdx, 16);
- }
- __ movl2ptr(rdx, rdx);
-
- // Handle all the JSR stuff here, then exit.
- // It's much shorter and cleaner than intermingling with the non-JSR
- // normal-branch stuff occurring below.
- if (is_jsr) {
- // Pre-load the next target bytecode into rbx
- __ load_unsigned_byte(rbx, Address(r13, rdx, Address::times_1, 0));
-
- // compute return address as bci in rax
- __ lea(rax, at_bcp((is_wide ? 5 : 3) -
- in_bytes(ConstMethod::codes_offset())));
- __ subptr(rax, Address(rcx, Method::const_offset()));
- // Adjust the bcp in r13 by the displacement in rdx
- __ addptr(r13, rdx);
- // jsr returns atos that is not an oop
- __ push_i(rax);
- __ dispatch_only(vtos);
- return;
- }
-
- // Normal (non-jsr) branch handling
-
- // Adjust the bcp in r13 by the displacement in rdx
- __ addptr(r13, rdx);
-
- assert(UseLoopCounter || !UseOnStackReplacement,
- "on-stack-replacement requires loop counters");
- Label backedge_counter_overflow;
- Label profile_method;
- Label dispatch;
- if (UseLoopCounter) {
- // increment backedge counter for backward branches
- // rax: MDO
- // ebx: MDO bumped taken-count
- // rcx: method
- // rdx: target offset
- // r13: target bcp
- // r14: locals pointer
- __ testl(rdx, rdx); // check if forward or backward branch
- __ jcc(Assembler::positive, dispatch); // count only if backward branch
-
- // check if MethodCounters exists
- Label has_counters;
- __ movptr(rax, Address(rcx, Method::method_counters_offset()));
- __ testptr(rax, rax);
- __ jcc(Assembler::notZero, has_counters);
- __ push(rdx);
- __ push(rcx);
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::build_method_counters),
- rcx);
- __ pop(rcx);
- __ pop(rdx);
- __ movptr(rax, Address(rcx, Method::method_counters_offset()));
- __ jcc(Assembler::zero, dispatch);
- __ bind(has_counters);
-
- if (TieredCompilation) {
- Label no_mdo;
- int increment = InvocationCounter::count_increment;
- if (ProfileInterpreter) {
- // Are we profiling?
- __ movptr(rbx, Address(rcx, in_bytes(Method::method_data_offset())));
- __ testptr(rbx, rbx);
- __ jccb(Assembler::zero, no_mdo);
- // Increment the MDO backedge counter
- const Address mdo_backedge_counter(rbx, in_bytes(MethodData::backedge_counter_offset()) +
- in_bytes(InvocationCounter::counter_offset()));
- const Address mask(rbx, in_bytes(MethodData::backedge_mask_offset()));
- __ increment_mask_and_jump(mdo_backedge_counter, increment, mask,
- rax, false, Assembler::zero, &backedge_counter_overflow);
- __ jmp(dispatch);
- }
- __ bind(no_mdo);
- // Increment backedge counter in MethodCounters*
- __ movptr(rcx, Address(rcx, Method::method_counters_offset()));
- const Address mask(rcx, in_bytes(MethodCounters::backedge_mask_offset()));
- __ increment_mask_and_jump(Address(rcx, be_offset), increment, mask,
- rax, false, Assembler::zero, &backedge_counter_overflow);
- } else { // not TieredCompilation
- // increment counter
- __ movptr(rcx, Address(rcx, Method::method_counters_offset()));
- __ movl(rax, Address(rcx, be_offset)); // load backedge counter
- __ incrementl(rax, InvocationCounter::count_increment); // increment counter
- __ movl(Address(rcx, be_offset), rax); // store counter
-
- __ movl(rax, Address(rcx, inv_offset)); // load invocation counter
-
- __ andl(rax, InvocationCounter::count_mask_value); // and the status bits
- __ addl(rax, Address(rcx, be_offset)); // add both counters
-
- if (ProfileInterpreter) {
- // Test to see if we should create a method data oop
- __ cmp32(rax, Address(rcx, in_bytes(MethodCounters::interpreter_profile_limit_offset())));
- __ jcc(Assembler::less, dispatch);
-
- // if no method data exists, go to profile method
- __ test_method_data_pointer(rax, profile_method);
-
- if (UseOnStackReplacement) {
- // check for overflow against ebx which is the MDO taken count
- __ cmp32(rbx, Address(rcx, in_bytes(MethodCounters::interpreter_backward_branch_limit_offset())));
- __ jcc(Assembler::below, dispatch);
-
- // When ProfileInterpreter is on, the backedge_count comes
- // from the MethodData*, which value does not get reset on
- // the call to frequency_counter_overflow(). To avoid
- // excessive calls to the overflow routine while the method is
- // being compiled, add a second test to make sure the overflow
- // function is called only once every overflow_frequency.
- const int overflow_frequency = 1024;
- __ andl(rbx, overflow_frequency - 1);
- __ jcc(Assembler::zero, backedge_counter_overflow);
-
- }
- } else {
- if (UseOnStackReplacement) {
- // check for overflow against eax, which is the sum of the
- // counters
- __ cmp32(rax, Address(rcx, in_bytes(MethodCounters::interpreter_backward_branch_limit_offset())));
- __ jcc(Assembler::aboveEqual, backedge_counter_overflow);
-
- }
- }
- }
- __ bind(dispatch);
- }
-
- // Pre-load the next target bytecode into rbx
- __ load_unsigned_byte(rbx, Address(r13, 0));
-
- // continue with the bytecode @ target
- // eax: return bci for jsr's, unused otherwise
- // ebx: target bytecode
- // r13: target bcp
- __ dispatch_only(vtos);
-
- if (UseLoopCounter) {
- if (ProfileInterpreter) {
- // Out-of-line code to allocate method data oop.
- __ bind(profile_method);
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::profile_method));
- __ load_unsigned_byte(rbx, Address(r13, 0)); // restore target bytecode
- __ set_method_data_pointer_for_bcp();
- __ jmp(dispatch);
- }
-
- if (UseOnStackReplacement) {
- // invocation counter overflow
- __ bind(backedge_counter_overflow);
- __ negptr(rdx);
- __ addptr(rdx, r13); // branch bcp
- // IcoResult frequency_counter_overflow([JavaThread*], address branch_bcp)
- __ call_VM(noreg,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::frequency_counter_overflow),
- rdx);
- __ load_unsigned_byte(rbx, Address(r13, 0)); // restore target bytecode
-
- // rax: osr nmethod (osr ok) or NULL (osr not possible)
- // ebx: target bytecode
- // rdx: scratch
- // r14: locals pointer
- // r13: bcp
- __ testptr(rax, rax); // test result
- __ jcc(Assembler::zero, dispatch); // no osr if null
- // nmethod may have been invalidated (VM may block upon call_VM return)
- __ cmpb(Address(rax, nmethod::state_offset()), nmethod::in_use);
- __ jcc(Assembler::notEqual, dispatch);
-
- // We have the address of an on stack replacement routine in eax
- // We need to prepare to execute the OSR method. First we must
- // migrate the locals and monitors off of the stack.
-
- __ mov(r13, rax); // save the nmethod
-
- call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin));
-
- // eax is OSR buffer, move it to expected parameter location
- __ mov(j_rarg0, rax);
-
- // We use j_rarg definitions here so that registers don't conflict as parameter
- // registers change across platforms as we are in the midst of a calling
- // sequence to the OSR nmethod and we don't want collision. These are NOT parameters.
-
- const Register retaddr = j_rarg2;
- const Register sender_sp = j_rarg1;
-
- // pop the interpreter frame
- __ movptr(sender_sp, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp
- __ leave(); // remove frame anchor
- __ pop(retaddr); // get return address
- __ mov(rsp, sender_sp); // set sp to sender sp
- // Ensure compiled code always sees stack at proper alignment
- __ andptr(rsp, -(StackAlignmentInBytes));
-
- // unlike x86 we need no specialized return from compiled code
- // to the interpreter or the call stub.
-
- // push the return address
- __ push(retaddr);
-
- // and begin the OSR nmethod
- __ jmp(Address(r13, nmethod::osr_entry_point_offset()));
- }
- }
-}
-
-
-void TemplateTable::if_0cmp(Condition cc) {
- transition(itos, vtos);
- // assume branch is more often taken than not (loops use backward branches)
- Label not_taken;
- __ testl(rax, rax);
- __ jcc(j_not(cc), not_taken);
- branch(false, false);
- __ bind(not_taken);
- __ profile_not_taken_branch(rax);
-}
-
-void TemplateTable::if_icmp(Condition cc) {
- transition(itos, vtos);
- // assume branch is more often taken than not (loops use backward branches)
- Label not_taken;
- __ pop_i(rdx);
- __ cmpl(rdx, rax);
- __ jcc(j_not(cc), not_taken);
- branch(false, false);
- __ bind(not_taken);
- __ profile_not_taken_branch(rax);
-}
-
-void TemplateTable::if_nullcmp(Condition cc) {
- transition(atos, vtos);
- // assume branch is more often taken than not (loops use backward branches)
- Label not_taken;
- __ testptr(rax, rax);
- __ jcc(j_not(cc), not_taken);
- branch(false, false);
- __ bind(not_taken);
- __ profile_not_taken_branch(rax);
-}
-
-void TemplateTable::if_acmp(Condition cc) {
- transition(atos, vtos);
- // assume branch is more often taken than not (loops use backward branches)
- Label not_taken;
- __ pop_ptr(rdx);
- __ cmpptr(rdx, rax);
- __ jcc(j_not(cc), not_taken);
- branch(false, false);
- __ bind(not_taken);
- __ profile_not_taken_branch(rax);
-}
-
-void TemplateTable::ret() {
- transition(vtos, vtos);
- locals_index(rbx);
- __ movslq(rbx, iaddress(rbx)); // get return bci, compute return bcp
- __ profile_ret(rbx, rcx);
- __ get_method(rax);
- __ movptr(r13, Address(rax, Method::const_offset()));
- __ lea(r13, Address(r13, rbx, Address::times_1,
- ConstMethod::codes_offset()));
- __ dispatch_next(vtos);
-}
-
-void TemplateTable::wide_ret() {
- transition(vtos, vtos);
- locals_index_wide(rbx);
- __ movptr(rbx, aaddress(rbx)); // get return bci, compute return bcp
- __ profile_ret(rbx, rcx);
- __ get_method(rax);
- __ movptr(r13, Address(rax, Method::const_offset()));
- __ lea(r13, Address(r13, rbx, Address::times_1, ConstMethod::codes_offset()));
- __ dispatch_next(vtos);
-}
-
-void TemplateTable::tableswitch() {
- Label default_case, continue_execution;
- transition(itos, vtos);
- // align r13
- __ lea(rbx, at_bcp(BytesPerInt));
- __ andptr(rbx, -BytesPerInt);
- // load lo & hi
- __ movl(rcx, Address(rbx, BytesPerInt));
- __ movl(rdx, Address(rbx, 2 * BytesPerInt));
- __ bswapl(rcx);
- __ bswapl(rdx);
- // check against lo & hi
- __ cmpl(rax, rcx);
- __ jcc(Assembler::less, default_case);
- __ cmpl(rax, rdx);
- __ jcc(Assembler::greater, default_case);
- // lookup dispatch offset
- __ subl(rax, rcx);
- __ movl(rdx, Address(rbx, rax, Address::times_4, 3 * BytesPerInt));
- __ profile_switch_case(rax, rbx, rcx);
- // continue execution
- __ bind(continue_execution);
- __ bswapl(rdx);
- __ movl2ptr(rdx, rdx);
- __ load_unsigned_byte(rbx, Address(r13, rdx, Address::times_1));
- __ addptr(r13, rdx);
- __ dispatch_only(vtos);
- // handle default
- __ bind(default_case);
- __ profile_switch_default(rax);
- __ movl(rdx, Address(rbx, 0));
- __ jmp(continue_execution);
-}
-
-void TemplateTable::lookupswitch() {
- transition(itos, itos);
- __ stop("lookupswitch bytecode should have been rewritten");
-}
-
-void TemplateTable::fast_linearswitch() {
- transition(itos, vtos);
- Label loop_entry, loop, found, continue_execution;
- // bswap rax so we can avoid bswapping the table entries
- __ bswapl(rax);
- // align r13
- __ lea(rbx, at_bcp(BytesPerInt)); // btw: should be able to get rid of
- // this instruction (change offsets
- // below)
- __ andptr(rbx, -BytesPerInt);
- // set counter
- __ movl(rcx, Address(rbx, BytesPerInt));
- __ bswapl(rcx);
- __ jmpb(loop_entry);
- // table search
- __ bind(loop);
- __ cmpl(rax, Address(rbx, rcx, Address::times_8, 2 * BytesPerInt));
- __ jcc(Assembler::equal, found);
- __ bind(loop_entry);
- __ decrementl(rcx);
- __ jcc(Assembler::greaterEqual, loop);
- // default case
- __ profile_switch_default(rax);
- __ movl(rdx, Address(rbx, 0));
- __ jmp(continue_execution);
- // entry found -> get offset
- __ bind(found);
- __ movl(rdx, Address(rbx, rcx, Address::times_8, 3 * BytesPerInt));
- __ profile_switch_case(rcx, rax, rbx);
- // continue execution
- __ bind(continue_execution);
- __ bswapl(rdx);
- __ movl2ptr(rdx, rdx);
- __ load_unsigned_byte(rbx, Address(r13, rdx, Address::times_1));
- __ addptr(r13, rdx);
- __ dispatch_only(vtos);
-}
-
-void TemplateTable::fast_binaryswitch() {
- transition(itos, vtos);
- // Implementation using the following core algorithm:
- //
- // int binary_search(int key, LookupswitchPair* array, int n) {
- // // Binary search according to "Methodik des Programmierens" by
- // // Edsger W. Dijkstra and W.H.J. Feijen, Addison Wesley Germany 1985.
- // int i = 0;
- // int j = n;
- // while (i+1 < j) {
- // // invariant P: 0 <= i < j <= n and (a[i] <= key < a[j] or Q)
- // // with Q: for all i: 0 <= i < n: key < a[i]
- // // where a stands for the array and assuming that the (inexisting)
- // // element a[n] is infinitely big.
- // int h = (i + j) >> 1;
- // // i < h < j
- // if (key < array[h].fast_match()) {
- // j = h;
- // } else {
- // i = h;
- // }
- // }
- // // R: a[i] <= key < a[i+1] or Q
- // // (i.e., if key is within array, i is the correct index)
- // return i;
- // }
-
- // Register allocation
- const Register key = rax; // already set (tosca)
- const Register array = rbx;
- const Register i = rcx;
- const Register j = rdx;
- const Register h = rdi;
- const Register temp = rsi;
-
- // Find array start
- __ lea(array, at_bcp(3 * BytesPerInt)); // btw: should be able to
- // get rid of this
- // instruction (change
- // offsets below)
- __ andptr(array, -BytesPerInt);
-
- // Initialize i & j
- __ xorl(i, i); // i = 0;
- __ movl(j, Address(array, -BytesPerInt)); // j = length(array);
-
- // Convert j into native byteordering
- __ bswapl(j);
-
- // And start
- Label entry;
- __ jmp(entry);
-
- // binary search loop
- {
- Label loop;
- __ bind(loop);
- // int h = (i + j) >> 1;
- __ leal(h, Address(i, j, Address::times_1)); // h = i + j;
- __ sarl(h, 1); // h = (i + j) >> 1;
- // if (key < array[h].fast_match()) {
- // j = h;
- // } else {
- // i = h;
- // }
- // Convert array[h].match to native byte-ordering before compare
- __ movl(temp, Address(array, h, Address::times_8));
- __ bswapl(temp);
- __ cmpl(key, temp);
- // j = h if (key < array[h].fast_match())
- __ cmovl(Assembler::less, j, h);
- // i = h if (key >= array[h].fast_match())
- __ cmovl(Assembler::greaterEqual, i, h);
- // while (i+1 < j)
- __ bind(entry);
- __ leal(h, Address(i, 1)); // i+1
- __ cmpl(h, j); // i+1 < j
- __ jcc(Assembler::less, loop);
- }
-
- // end of binary search, result index is i (must check again!)
- Label default_case;
- // Convert array[i].match to native byte-ordering before compare
- __ movl(temp, Address(array, i, Address::times_8));
- __ bswapl(temp);
- __ cmpl(key, temp);
- __ jcc(Assembler::notEqual, default_case);
-
- // entry found -> j = offset
- __ movl(j , Address(array, i, Address::times_8, BytesPerInt));
- __ profile_switch_case(i, key, array);
- __ bswapl(j);
- __ movl2ptr(j, j);
- __ load_unsigned_byte(rbx, Address(r13, j, Address::times_1));
- __ addptr(r13, j);
- __ dispatch_only(vtos);
-
- // default case -> j = default offset
- __ bind(default_case);
- __ profile_switch_default(i);
- __ movl(j, Address(array, -2 * BytesPerInt));
- __ bswapl(j);
- __ movl2ptr(j, j);
- __ load_unsigned_byte(rbx, Address(r13, j, Address::times_1));
- __ addptr(r13, j);
- __ dispatch_only(vtos);
-}
-
-
-void TemplateTable::_return(TosState state) {
- transition(state, state);
- assert(_desc->calls_vm(),
- "inconsistent calls_vm information"); // call in remove_activation
-
- if (_desc->bytecode() == Bytecodes::_return_register_finalizer) {
- assert(state == vtos, "only valid state");
- __ movptr(c_rarg1, aaddress(0));
- __ load_klass(rdi, c_rarg1);
- __ movl(rdi, Address(rdi, Klass::access_flags_offset()));
- __ testl(rdi, JVM_ACC_HAS_FINALIZER);
- Label skip_register_finalizer;
- __ jcc(Assembler::zero, skip_register_finalizer);
-
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), c_rarg1);
-
- __ bind(skip_register_finalizer);
- }
-
- __ remove_activation(state, r13);
- __ jmp(r13);
-}
-
-// ----------------------------------------------------------------------------
-// Volatile variables demand their effects be made known to all CPU's
-// in order. Store buffers on most chips allow reads & writes to
-// reorder; the JMM's ReadAfterWrite.java test fails in -Xint mode
-// without some kind of memory barrier (i.e., it's not sufficient that
-// the interpreter does not reorder volatile references, the hardware
-// also must not reorder them).
-//
-// According to the new Java Memory Model (JMM):
-// (1) All volatiles are serialized wrt to each other. ALSO reads &
-// writes act as aquire & release, so:
-// (2) A read cannot let unrelated NON-volatile memory refs that
-// happen after the read float up to before the read. It's OK for
-// non-volatile memory refs that happen before the volatile read to
-// float down below it.
-// (3) Similar a volatile write cannot let unrelated NON-volatile
-// memory refs that happen BEFORE the write float down to after the
-// write. It's OK for non-volatile memory refs that happen after the
-// volatile write to float up before it.
-//
-// We only put in barriers around volatile refs (they are expensive),
-// not _between_ memory refs (that would require us to track the
-// flavor of the previous memory refs). Requirements (2) and (3)
-// require some barriers before volatile stores and after volatile
-// loads. These nearly cover requirement (1) but miss the
-// volatile-store-volatile-load case. This final case is placed after
-// volatile-stores although it could just as well go before
-// volatile-loads.
-void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits
- order_constraint) {
- // Helper function to insert a is-volatile test and memory barrier
- if (os::is_MP()) { // Not needed on single CPU
- __ membar(order_constraint);
- }
-}
-
-void TemplateTable::resolve_cache_and_index(int byte_no,
- Register Rcache,
- Register index,
- size_t index_size) {
- const Register temp = rbx;
- assert_different_registers(Rcache, index, temp);
-
- Label resolved;
- assert(byte_no == f1_byte || byte_no == f2_byte, "byte_no out of range");
- __ get_cache_and_index_and_bytecode_at_bcp(Rcache, index, temp, byte_no, 1, index_size);
- __ cmpl(temp, (int) bytecode()); // have we resolved this bytecode?
- __ jcc(Assembler::equal, resolved);
-
- // resolve first time through
- address entry;
- switch (bytecode()) {
- case Bytecodes::_getstatic:
- case Bytecodes::_putstatic:
- case Bytecodes::_getfield:
- case Bytecodes::_putfield:
- entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_get_put);
- break;
- case Bytecodes::_invokevirtual:
- case Bytecodes::_invokespecial:
- case Bytecodes::_invokestatic:
- case Bytecodes::_invokeinterface:
- entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invoke);
- break;
- case Bytecodes::_invokehandle:
- entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokehandle);
- break;
- case Bytecodes::_invokedynamic:
- entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invokedynamic);
- break;
- default:
- fatal(err_msg("unexpected bytecode: %s", Bytecodes::name(bytecode())));
- break;
- }
- __ movl(temp, (int) bytecode());
- __ call_VM(noreg, entry, temp);
-
- // Update registers with resolved info
- __ get_cache_and_index_at_bcp(Rcache, index, 1, index_size);
- __ bind(resolved);
-}
-
-// The cache and index registers must be set before call
-void TemplateTable::load_field_cp_cache_entry(Register obj,
- Register cache,
- Register index,
- Register off,
- Register flags,
- bool is_static = false) {
- assert_different_registers(cache, index, flags, off);
-
- ByteSize cp_base_offset = ConstantPoolCache::base_offset();
- // Field offset
- __ movptr(off, Address(cache, index, Address::times_ptr,
- in_bytes(cp_base_offset +
- ConstantPoolCacheEntry::f2_offset())));
- // Flags
- __ movl(flags, Address(cache, index, Address::times_ptr,
- in_bytes(cp_base_offset +
- ConstantPoolCacheEntry::flags_offset())));
-
- // klass overwrite register
- if (is_static) {
- __ movptr(obj, Address(cache, index, Address::times_ptr,
- in_bytes(cp_base_offset +
- ConstantPoolCacheEntry::f1_offset())));
- const int mirror_offset = in_bytes(Klass::java_mirror_offset());
- __ movptr(obj, Address(obj, mirror_offset));
- }
-}
-
-void TemplateTable::load_invoke_cp_cache_entry(int byte_no,
- Register method,
- Register itable_index,
- Register flags,
- bool is_invokevirtual,
- bool is_invokevfinal, /*unused*/
- bool is_invokedynamic) {
- // setup registers
- const Register cache = rcx;
- const Register index = rdx;
- assert_different_registers(method, flags);
- assert_different_registers(method, cache, index);
- assert_different_registers(itable_index, flags);
- assert_different_registers(itable_index, cache, index);
- // determine constant pool cache field offsets
- assert(is_invokevirtual == (byte_no == f2_byte), "is_invokevirtual flag redundant");
- const int method_offset = in_bytes(
- ConstantPoolCache::base_offset() +
- ((byte_no == f2_byte)
- ? ConstantPoolCacheEntry::f2_offset()
- : ConstantPoolCacheEntry::f1_offset()));
- const int flags_offset = in_bytes(ConstantPoolCache::base_offset() +
- ConstantPoolCacheEntry::flags_offset());
- // access constant pool cache fields
- const int index_offset = in_bytes(ConstantPoolCache::base_offset() +
- ConstantPoolCacheEntry::f2_offset());
-
- size_t index_size = (is_invokedynamic ? sizeof(u4) : sizeof(u2));
- resolve_cache_and_index(byte_no, cache, index, index_size);
- __ movptr(method, Address(cache, index, Address::times_ptr, method_offset));
-
- if (itable_index != noreg) {
- // pick up itable or appendix index from f2 also:
- __ movptr(itable_index, Address(cache, index, Address::times_ptr, index_offset));
- }
- __ movl(flags, Address(cache, index, Address::times_ptr, flags_offset));
-}
-
-// Correct values of the cache and index registers are preserved.
-void TemplateTable::jvmti_post_field_access(Register cache, Register index,
- bool is_static, bool has_tos) {
- // do the JVMTI work here to avoid disturbing the register state below
- // We use c_rarg registers here because we want to use the register used in
- // the call to the VM
- if (JvmtiExport::can_post_field_access()) {
- // Check to see if a field access watch has been set before we
- // take the time to call into the VM.
- Label L1;
- assert_different_registers(cache, index, rax);
- __ mov32(rax, ExternalAddress((address) JvmtiExport::get_field_access_count_addr()));
- __ testl(rax, rax);
- __ jcc(Assembler::zero, L1);
-
- __ get_cache_and_index_at_bcp(c_rarg2, c_rarg3, 1);
-
- // cache entry pointer
- __ addptr(c_rarg2, in_bytes(ConstantPoolCache::base_offset()));
- __ shll(c_rarg3, LogBytesPerWord);
- __ addptr(c_rarg2, c_rarg3);
- if (is_static) {
- __ xorl(c_rarg1, c_rarg1); // NULL object reference
- } else {
- __ movptr(c_rarg1, at_tos()); // get object pointer without popping it
- __ verify_oop(c_rarg1);
- }
- // c_rarg1: object pointer or NULL
- // c_rarg2: cache entry pointer
- // c_rarg3: jvalue object on the stack
- __ call_VM(noreg, CAST_FROM_FN_PTR(address,
- InterpreterRuntime::post_field_access),
- c_rarg1, c_rarg2, c_rarg3);
- __ get_cache_and_index_at_bcp(cache, index, 1);
- __ bind(L1);
- }
-}
-
-void TemplateTable::pop_and_check_object(Register r) {
- __ pop_ptr(r);
- __ null_check(r); // for field access must check obj.
- __ verify_oop(r);
-}
-
-void TemplateTable::getfield_or_static(int byte_no, bool is_static) {
- transition(vtos, vtos);
-
- const Register cache = rcx;
- const Register index = rdx;
- const Register obj = c_rarg3;
- const Register off = rbx;
- const Register flags = rax;
- const Register bc = c_rarg3; // uses same reg as obj, so don't mix them
-
- resolve_cache_and_index(byte_no, cache, index, sizeof(u2));
- jvmti_post_field_access(cache, index, is_static, false);
- load_field_cp_cache_entry(obj, cache, index, off, flags, is_static);
-
- if (!is_static) {
- // obj is on the stack
- pop_and_check_object(obj);
- }
-
- const Address field(obj, off, Address::times_1);
-
- Label Done, notByte, notInt, notShort, notChar,
- notLong, notFloat, notObj, notDouble;
-
- __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift);
- // Make sure we don't need to mask edx after the above shift
- assert(btos == 0, "change code, btos != 0");
-
- __ andl(flags, ConstantPoolCacheEntry::tos_state_mask);
- __ jcc(Assembler::notZero, notByte);
- // btos
- __ load_signed_byte(rax, field);
- __ push(btos);
- // Rewrite bytecode to be faster
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_bgetfield, bc, rbx);
- }
- __ jmp(Done);
-
- __ bind(notByte);
- __ cmpl(flags, atos);
- __ jcc(Assembler::notEqual, notObj);
- // atos
- __ load_heap_oop(rax, field);
- __ push(atos);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_agetfield, bc, rbx);
- }
- __ jmp(Done);
-
- __ bind(notObj);
- __ cmpl(flags, itos);
- __ jcc(Assembler::notEqual, notInt);
- // itos
- __ movl(rax, field);
- __ push(itos);
- // Rewrite bytecode to be faster
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_igetfield, bc, rbx);
- }
- __ jmp(Done);
-
- __ bind(notInt);
- __ cmpl(flags, ctos);
- __ jcc(Assembler::notEqual, notChar);
- // ctos
- __ load_unsigned_short(rax, field);
- __ push(ctos);
- // Rewrite bytecode to be faster
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_cgetfield, bc, rbx);
- }
- __ jmp(Done);
-
- __ bind(notChar);
- __ cmpl(flags, stos);
- __ jcc(Assembler::notEqual, notShort);
- // stos
- __ load_signed_short(rax, field);
- __ push(stos);
- // Rewrite bytecode to be faster
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_sgetfield, bc, rbx);
- }
- __ jmp(Done);
-
- __ bind(notShort);
- __ cmpl(flags, ltos);
- __ jcc(Assembler::notEqual, notLong);
- // ltos
- __ movq(rax, field);
- __ push(ltos);
- // Rewrite bytecode to be faster
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_lgetfield, bc, rbx);
- }
- __ jmp(Done);
-
- __ bind(notLong);
- __ cmpl(flags, ftos);
- __ jcc(Assembler::notEqual, notFloat);
- // ftos
- __ movflt(xmm0, field);
- __ push(ftos);
- // Rewrite bytecode to be faster
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_fgetfield, bc, rbx);
- }
- __ jmp(Done);
-
- __ bind(notFloat);
-#ifdef ASSERT
- __ cmpl(flags, dtos);
- __ jcc(Assembler::notEqual, notDouble);
-#endif
- // dtos
- __ movdbl(xmm0, field);
- __ push(dtos);
- // Rewrite bytecode to be faster
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_dgetfield, bc, rbx);
- }
-#ifdef ASSERT
- __ jmp(Done);
-
- __ bind(notDouble);
- __ stop("Bad state");
-#endif
-
- __ bind(Done);
- // [jk] not needed currently
- // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadLoad |
- // Assembler::LoadStore));
-}
-
-
-void TemplateTable::getfield(int byte_no) {
- getfield_or_static(byte_no, false);
-}
-
-void TemplateTable::getstatic(int byte_no) {
- getfield_or_static(byte_no, true);
-}
-
-// The registers cache and index expected to be set before call.
-// The function may destroy various registers, just not the cache and index registers.
-void TemplateTable::jvmti_post_field_mod(Register cache, Register index, bool is_static) {
- transition(vtos, vtos);
-
- ByteSize cp_base_offset = ConstantPoolCache::base_offset();
-
- if (JvmtiExport::can_post_field_modification()) {
- // Check to see if a field modification watch has been set before
- // we take the time to call into the VM.
- Label L1;
- assert_different_registers(cache, index, rax);
- __ mov32(rax, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr()));
- __ testl(rax, rax);
- __ jcc(Assembler::zero, L1);
-
- __ get_cache_and_index_at_bcp(c_rarg2, rscratch1, 1);
-
- if (is_static) {
- // Life is simple. Null out the object pointer.
- __ xorl(c_rarg1, c_rarg1);
- } else {
- // Life is harder. The stack holds the value on top, followed by
- // the object. We don't know the size of the value, though; it
- // could be one or two words depending on its type. As a result,
- // we must find the type to determine where the object is.
- __ movl(c_rarg3, Address(c_rarg2, rscratch1,
- Address::times_8,
- in_bytes(cp_base_offset +
- ConstantPoolCacheEntry::flags_offset())));
- __ shrl(c_rarg3, ConstantPoolCacheEntry::tos_state_shift);
- // Make sure we don't need to mask rcx after the above shift
- ConstantPoolCacheEntry::verify_tos_state_shift();
- __ movptr(c_rarg1, at_tos_p1()); // initially assume a one word jvalue
- __ cmpl(c_rarg3, ltos);
- __ cmovptr(Assembler::equal,
- c_rarg1, at_tos_p2()); // ltos (two word jvalue)
- __ cmpl(c_rarg3, dtos);
- __ cmovptr(Assembler::equal,
- c_rarg1, at_tos_p2()); // dtos (two word jvalue)
- }
- // cache entry pointer
- __ addptr(c_rarg2, in_bytes(cp_base_offset));
- __ shll(rscratch1, LogBytesPerWord);
- __ addptr(c_rarg2, rscratch1);
- // object (tos)
- __ mov(c_rarg3, rsp);
- // c_rarg1: object pointer set up above (NULL if static)
- // c_rarg2: cache entry pointer
- // c_rarg3: jvalue object on the stack
- __ call_VM(noreg,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::post_field_modification),
- c_rarg1, c_rarg2, c_rarg3);
- __ get_cache_and_index_at_bcp(cache, index, 1);
- __ bind(L1);
- }
-}
-
-void TemplateTable::putfield_or_static(int byte_no, bool is_static) {
- transition(vtos, vtos);
-
- const Register cache = rcx;
- const Register index = rdx;
- const Register obj = rcx;
- const Register off = rbx;
- const Register flags = rax;
- const Register bc = c_rarg3;
-
- resolve_cache_and_index(byte_no, cache, index, sizeof(u2));
- jvmti_post_field_mod(cache, index, is_static);
- load_field_cp_cache_entry(obj, cache, index, off, flags, is_static);
-
- // [jk] not needed currently
- // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadStore |
- // Assembler::StoreStore));
-
- Label notVolatile, Done;
- __ movl(rdx, flags);
- __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift);
- __ andl(rdx, 0x1);
-
- // field address
- const Address field(obj, off, Address::times_1);
-
- Label notByte, notInt, notShort, notChar,
- notLong, notFloat, notObj, notDouble;
-
- __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift);
-
- assert(btos == 0, "change code, btos != 0");
- __ andl(flags, ConstantPoolCacheEntry::tos_state_mask);
- __ jcc(Assembler::notZero, notByte);
-
- // btos
- {
- __ pop(btos);
- if (!is_static) pop_and_check_object(obj);
- __ movb(field, rax);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_bputfield, bc, rbx, true, byte_no);
- }
- __ jmp(Done);
- }
-
- __ bind(notByte);
- __ cmpl(flags, atos);
- __ jcc(Assembler::notEqual, notObj);
-
- // atos
- {
- __ pop(atos);
- if (!is_static) pop_and_check_object(obj);
- // Store into the field
- do_oop_store(_masm, field, rax, _bs->kind(), false);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_aputfield, bc, rbx, true, byte_no);
- }
- __ jmp(Done);
- }
-
- __ bind(notObj);
- __ cmpl(flags, itos);
- __ jcc(Assembler::notEqual, notInt);
-
- // itos
- {
- __ pop(itos);
- if (!is_static) pop_and_check_object(obj);
- __ movl(field, rax);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_iputfield, bc, rbx, true, byte_no);
- }
- __ jmp(Done);
- }
-
- __ bind(notInt);
- __ cmpl(flags, ctos);
- __ jcc(Assembler::notEqual, notChar);
-
- // ctos
- {
- __ pop(ctos);
- if (!is_static) pop_and_check_object(obj);
- __ movw(field, rax);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_cputfield, bc, rbx, true, byte_no);
- }
- __ jmp(Done);
- }
-
- __ bind(notChar);
- __ cmpl(flags, stos);
- __ jcc(Assembler::notEqual, notShort);
-
- // stos
- {
- __ pop(stos);
- if (!is_static) pop_and_check_object(obj);
- __ movw(field, rax);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_sputfield, bc, rbx, true, byte_no);
- }
- __ jmp(Done);
- }
-
- __ bind(notShort);
- __ cmpl(flags, ltos);
- __ jcc(Assembler::notEqual, notLong);
-
- // ltos
- {
- __ pop(ltos);
- if (!is_static) pop_and_check_object(obj);
- __ movq(field, rax);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_lputfield, bc, rbx, true, byte_no);
- }
- __ jmp(Done);
- }
-
- __ bind(notLong);
- __ cmpl(flags, ftos);
- __ jcc(Assembler::notEqual, notFloat);
-
- // ftos
- {
- __ pop(ftos);
- if (!is_static) pop_and_check_object(obj);
- __ movflt(field, xmm0);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_fputfield, bc, rbx, true, byte_no);
- }
- __ jmp(Done);
- }
-
- __ bind(notFloat);
-#ifdef ASSERT
- __ cmpl(flags, dtos);
- __ jcc(Assembler::notEqual, notDouble);
-#endif
-
- // dtos
- {
- __ pop(dtos);
- if (!is_static) pop_and_check_object(obj);
- __ movdbl(field, xmm0);
- if (!is_static) {
- patch_bytecode(Bytecodes::_fast_dputfield, bc, rbx, true, byte_no);
- }
- }
-
-#ifdef ASSERT
- __ jmp(Done);
-
- __ bind(notDouble);
- __ stop("Bad state");
-#endif
-
- __ bind(Done);
-
- // Check for volatile store
- __ testl(rdx, rdx);
- __ jcc(Assembler::zero, notVolatile);
- volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad |
- Assembler::StoreStore));
- __ bind(notVolatile);
-}
-
-void TemplateTable::putfield(int byte_no) {
- putfield_or_static(byte_no, false);
-}
-
-void TemplateTable::putstatic(int byte_no) {
- putfield_or_static(byte_no, true);
-}
-
-void TemplateTable::jvmti_post_fast_field_mod() {
- if (JvmtiExport::can_post_field_modification()) {
- // Check to see if a field modification watch has been set before
- // we take the time to call into the VM.
- Label L2;
- __ mov32(c_rarg3, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr()));
- __ testl(c_rarg3, c_rarg3);
- __ jcc(Assembler::zero, L2);
- __ pop_ptr(rbx); // copy the object pointer from tos
- __ verify_oop(rbx);
- __ push_ptr(rbx); // put the object pointer back on tos
- // Save tos values before call_VM() clobbers them. Since we have
- // to do it for every data type, we use the saved values as the
- // jvalue object.
- switch (bytecode()) { // load values into the jvalue object
- case Bytecodes::_fast_aputfield: __ push_ptr(rax); break;
- case Bytecodes::_fast_bputfield: // fall through
- case Bytecodes::_fast_sputfield: // fall through
- case Bytecodes::_fast_cputfield: // fall through
- case Bytecodes::_fast_iputfield: __ push_i(rax); break;
- case Bytecodes::_fast_dputfield: __ push_d(); break;
- case Bytecodes::_fast_fputfield: __ push_f(); break;
- case Bytecodes::_fast_lputfield: __ push_l(rax); break;
-
- default:
- ShouldNotReachHere();
- }
- __ mov(c_rarg3, rsp); // points to jvalue on the stack
- // access constant pool cache entry
- __ get_cache_entry_pointer_at_bcp(c_rarg2, rax, 1);
- __ verify_oop(rbx);
- // rbx: object pointer copied above
- // c_rarg2: cache entry pointer
- // c_rarg3: jvalue object on the stack
- __ call_VM(noreg,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::post_field_modification),
- rbx, c_rarg2, c_rarg3);
-
- switch (bytecode()) { // restore tos values
- case Bytecodes::_fast_aputfield: __ pop_ptr(rax); break;
- case Bytecodes::_fast_bputfield: // fall through
- case Bytecodes::_fast_sputfield: // fall through
- case Bytecodes::_fast_cputfield: // fall through
- case Bytecodes::_fast_iputfield: __ pop_i(rax); break;
- case Bytecodes::_fast_dputfield: __ pop_d(); break;
- case Bytecodes::_fast_fputfield: __ pop_f(); break;
- case Bytecodes::_fast_lputfield: __ pop_l(rax); break;
- }
- __ bind(L2);
- }
-}
-
-void TemplateTable::fast_storefield(TosState state) {
- transition(state, vtos);
-
- ByteSize base = ConstantPoolCache::base_offset();
-
- jvmti_post_fast_field_mod();
-
- // access constant pool cache
- __ get_cache_and_index_at_bcp(rcx, rbx, 1);
-
- // test for volatile with rdx
- __ movl(rdx, Address(rcx, rbx, Address::times_8,
- in_bytes(base +
- ConstantPoolCacheEntry::flags_offset())));
-
- // replace index with field offset from cache entry
- __ movptr(rbx, Address(rcx, rbx, Address::times_8,
- in_bytes(base + ConstantPoolCacheEntry::f2_offset())));
-
- // [jk] not needed currently
- // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadStore |
- // Assembler::StoreStore));
-
- Label notVolatile;
- __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift);
- __ andl(rdx, 0x1);
-
- // Get object from stack
- pop_and_check_object(rcx);
-
- // field address
- const Address field(rcx, rbx, Address::times_1);
-
- // access field
- switch (bytecode()) {
- case Bytecodes::_fast_aputfield:
- do_oop_store(_masm, field, rax, _bs->kind(), false);
- break;
- case Bytecodes::_fast_lputfield:
- __ movq(field, rax);
- break;
- case Bytecodes::_fast_iputfield:
- __ movl(field, rax);
- break;
- case Bytecodes::_fast_bputfield:
- __ movb(field, rax);
- break;
- case Bytecodes::_fast_sputfield:
- // fall through
- case Bytecodes::_fast_cputfield:
- __ movw(field, rax);
- break;
- case Bytecodes::_fast_fputfield:
- __ movflt(field, xmm0);
- break;
- case Bytecodes::_fast_dputfield:
- __ movdbl(field, xmm0);
- break;
- default:
- ShouldNotReachHere();
- }
-
- // Check for volatile store
- __ testl(rdx, rdx);
- __ jcc(Assembler::zero, notVolatile);
- volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad |
- Assembler::StoreStore));
- __ bind(notVolatile);
-}
-
-
-void TemplateTable::fast_accessfield(TosState state) {
- transition(atos, state);
-
- // Do the JVMTI work here to avoid disturbing the register state below
- if (JvmtiExport::can_post_field_access()) {
- // Check to see if a field access watch has been set before we
- // take the time to call into the VM.
- Label L1;
- __ mov32(rcx, ExternalAddress((address) JvmtiExport::get_field_access_count_addr()));
- __ testl(rcx, rcx);
- __ jcc(Assembler::zero, L1);
- // access constant pool cache entry
- __ get_cache_entry_pointer_at_bcp(c_rarg2, rcx, 1);
- __ verify_oop(rax);
- __ push_ptr(rax); // save object pointer before call_VM() clobbers it
- __ mov(c_rarg1, rax);
- // c_rarg1: object pointer copied above
- // c_rarg2: cache entry pointer
- __ call_VM(noreg,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::post_field_access),
- c_rarg1, c_rarg2);
- __ pop_ptr(rax); // restore object pointer
- __ bind(L1);
- }
-
- // access constant pool cache
- __ get_cache_and_index_at_bcp(rcx, rbx, 1);
- // replace index with field offset from cache entry
- // [jk] not needed currently
- // if (os::is_MP()) {
- // __ movl(rdx, Address(rcx, rbx, Address::times_8,
- // in_bytes(ConstantPoolCache::base_offset() +
- // ConstantPoolCacheEntry::flags_offset())));
- // __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift);
- // __ andl(rdx, 0x1);
- // }
- __ movptr(rbx, Address(rcx, rbx, Address::times_8,
- in_bytes(ConstantPoolCache::base_offset() +
- ConstantPoolCacheEntry::f2_offset())));
-
- // rax: object
- __ verify_oop(rax);
- __ null_check(rax);
- Address field(rax, rbx, Address::times_1);
-
- // access field
- switch (bytecode()) {
- case Bytecodes::_fast_agetfield:
- __ load_heap_oop(rax, field);
- __ verify_oop(rax);
- break;
- case Bytecodes::_fast_lgetfield:
- __ movq(rax, field);
- break;
- case Bytecodes::_fast_igetfield:
- __ movl(rax, field);
- break;
- case Bytecodes::_fast_bgetfield:
- __ movsbl(rax, field);
- break;
- case Bytecodes::_fast_sgetfield:
- __ load_signed_short(rax, field);
- break;
- case Bytecodes::_fast_cgetfield:
- __ load_unsigned_short(rax, field);
- break;
- case Bytecodes::_fast_fgetfield:
- __ movflt(xmm0, field);
- break;
- case Bytecodes::_fast_dgetfield:
- __ movdbl(xmm0, field);
- break;
- default:
- ShouldNotReachHere();
- }
- // [jk] not needed currently
- // if (os::is_MP()) {
- // Label notVolatile;
- // __ testl(rdx, rdx);
- // __ jcc(Assembler::zero, notVolatile);
- // __ membar(Assembler::LoadLoad);
- // __ bind(notVolatile);
- //};
-}
-
-void TemplateTable::fast_xaccess(TosState state) {
- transition(vtos, state);
-
- // get receiver
- __ movptr(rax, aaddress(0));
- // access constant pool cache
- __ get_cache_and_index_at_bcp(rcx, rdx, 2);
- __ movptr(rbx,
- Address(rcx, rdx, Address::times_8,
- in_bytes(ConstantPoolCache::base_offset() +
- ConstantPoolCacheEntry::f2_offset())));
- // make sure exception is reported in correct bcp range (getfield is
- // next instruction)
- __ increment(r13);
- __ null_check(rax);
- switch (state) {
- case itos:
- __ movl(rax, Address(rax, rbx, Address::times_1));
- break;
- case atos:
- __ load_heap_oop(rax, Address(rax, rbx, Address::times_1));
- __ verify_oop(rax);
- break;
- case ftos:
- __ movflt(xmm0, Address(rax, rbx, Address::times_1));
- break;
- default:
- ShouldNotReachHere();
- }
-
- // [jk] not needed currently
- // if (os::is_MP()) {
- // Label notVolatile;
- // __ movl(rdx, Address(rcx, rdx, Address::times_8,
- // in_bytes(ConstantPoolCache::base_offset() +
- // ConstantPoolCacheEntry::flags_offset())));
- // __ shrl(rdx, ConstantPoolCacheEntry::is_volatile_shift);
- // __ testl(rdx, 0x1);
- // __ jcc(Assembler::zero, notVolatile);
- // __ membar(Assembler::LoadLoad);
- // __ bind(notVolatile);
- // }
-
- __ decrement(r13);
-}
-
-
-
-//-----------------------------------------------------------------------------
-// Calls
-
-void TemplateTable::count_calls(Register method, Register temp) {
- // implemented elsewhere
- ShouldNotReachHere();
-}
-
-void TemplateTable::prepare_invoke(int byte_no,
- Register method, // linked method (or i-klass)
- Register index, // itable index, MethodType, etc.
- Register recv, // if caller wants to see it
- Register flags // if caller wants to test it
- ) {
- // determine flags
- const Bytecodes::Code code = bytecode();
- const bool is_invokeinterface = code == Bytecodes::_invokeinterface;
- const bool is_invokedynamic = code == Bytecodes::_invokedynamic;
- const bool is_invokehandle = code == Bytecodes::_invokehandle;
- const bool is_invokevirtual = code == Bytecodes::_invokevirtual;
- const bool is_invokespecial = code == Bytecodes::_invokespecial;
- const bool load_receiver = (recv != noreg);
- const bool save_flags = (flags != noreg);
- assert(load_receiver == (code != Bytecodes::_invokestatic && code != Bytecodes::_invokedynamic), "");
- assert(save_flags == (is_invokeinterface || is_invokevirtual), "need flags for vfinal");
- assert(flags == noreg || flags == rdx, "");
- assert(recv == noreg || recv == rcx, "");
-
- // setup registers & access constant pool cache
- if (recv == noreg) recv = rcx;
- if (flags == noreg) flags = rdx;
- assert_different_registers(method, index, recv, flags);
-
- // save 'interpreter return address'
- __ save_bcp();
-
- load_invoke_cp_cache_entry(byte_no, method, index, flags, is_invokevirtual, false, is_invokedynamic);
-
- // maybe push appendix to arguments (just before return address)
- if (is_invokedynamic || is_invokehandle) {
- Label L_no_push;
- __ testl(flags, (1 << ConstantPoolCacheEntry::has_appendix_shift));
- __ jcc(Assembler::zero, L_no_push);
- // Push the appendix as a trailing parameter.
- // This must be done before we get the receiver,
- // since the parameter_size includes it.
- __ push(rbx);
- __ mov(rbx, index);
- assert(ConstantPoolCacheEntry::_indy_resolved_references_appendix_offset == 0, "appendix expected at index+0");
- __ load_resolved_reference_at_index(index, rbx);
- __ pop(rbx);
- __ push(index); // push appendix (MethodType, CallSite, etc.)
- __ bind(L_no_push);
- }
-
- // load receiver if needed (after appendix is pushed so parameter size is correct)
- // Note: no return address pushed yet
- if (load_receiver) {
- __ movl(recv, flags);
- __ andl(recv, ConstantPoolCacheEntry::parameter_size_mask);
- const int no_return_pc_pushed_yet = -1; // argument slot correction before we push return address
- const int receiver_is_at_end = -1; // back off one slot to get receiver
- Address recv_addr = __ argument_address(recv, no_return_pc_pushed_yet + receiver_is_at_end);
- __ movptr(recv, recv_addr);
- __ verify_oop(recv);
- }
-
- if (save_flags) {
- __ movl(r13, flags);
- }
-
- // compute return type
- __ shrl(flags, ConstantPoolCacheEntry::tos_state_shift);
- // Make sure we don't need to mask flags after the above shift
- ConstantPoolCacheEntry::verify_tos_state_shift();
- // load return address
- {
- const address table_addr = (address) Interpreter::invoke_return_entry_table_for(code);
- ExternalAddress table(table_addr);
- __ lea(rscratch1, table);
- __ movptr(flags, Address(rscratch1, flags, Address::times_ptr));
- }
-
- // push return address
- __ push(flags);
-
- // Restore flags value from the constant pool cache, and restore rsi
- // for later null checks. r13 is the bytecode pointer
- if (save_flags) {
- __ movl(flags, r13);
- __ restore_bcp();
- }
-}
-
-
-void TemplateTable::invokevirtual_helper(Register index,
- Register recv,
- Register flags) {
- // Uses temporary registers rax, rdx
- assert_different_registers(index, recv, rax, rdx);
- assert(index == rbx, "");
- assert(recv == rcx, "");
-
- // Test for an invoke of a final method
- Label notFinal;
- __ movl(rax, flags);
- __ andl(rax, (1 << ConstantPoolCacheEntry::is_vfinal_shift));
- __ jcc(Assembler::zero, notFinal);
-
- const Register method = index; // method must be rbx
- assert(method == rbx,
- "Method* must be rbx for interpreter calling convention");
-
- // do the call - the index is actually the method to call
- // that is, f2 is a vtable index if !is_vfinal, else f2 is a Method*
-
- // It's final, need a null check here!
- __ null_check(recv);
-
- // profile this call
- __ profile_final_call(rax);
- __ profile_arguments_type(rax, method, r13, true);
-
- __ jump_from_interpreted(method, rax);
-
- __ bind(notFinal);
-
- // get receiver klass
- __ null_check(recv, oopDesc::klass_offset_in_bytes());
- __ load_klass(rax, recv);
-
- // profile this call
- __ profile_virtual_call(rax, r14, rdx);
-
- // get target Method* & entry point
- __ lookup_virtual_method(rax, index, method);
- __ profile_arguments_type(rdx, method, r13, true);
- __ jump_from_interpreted(method, rdx);
-}
-
-
-void TemplateTable::invokevirtual(int byte_no) {
- transition(vtos, vtos);
- assert(byte_no == f2_byte, "use this argument");
- prepare_invoke(byte_no,
- rbx, // method or vtable index
- noreg, // unused itable index
- rcx, rdx); // recv, flags
-
- // rbx: index
- // rcx: receiver
- // rdx: flags
-
- invokevirtual_helper(rbx, rcx, rdx);
-}
-
-
-void TemplateTable::invokespecial(int byte_no) {
- transition(vtos, vtos);
- assert(byte_no == f1_byte, "use this argument");
- prepare_invoke(byte_no, rbx, noreg, // get f1 Method*
- rcx); // get receiver also for null check
- __ verify_oop(rcx);
- __ null_check(rcx);
- // do the call
- __ profile_call(rax);
- __ profile_arguments_type(rax, rbx, r13, false);
- __ jump_from_interpreted(rbx, rax);
-}
-
-
-void TemplateTable::invokestatic(int byte_no) {
- transition(vtos, vtos);
- assert(byte_no == f1_byte, "use this argument");
- prepare_invoke(byte_no, rbx); // get f1 Method*
- // do the call
- __ profile_call(rax);
- __ profile_arguments_type(rax, rbx, r13, false);
- __ jump_from_interpreted(rbx, rax);
-}
-
-void TemplateTable::fast_invokevfinal(int byte_no) {
- transition(vtos, vtos);
- assert(byte_no == f2_byte, "use this argument");
- __ stop("fast_invokevfinal not used on amd64");
-}
-
-void TemplateTable::invokeinterface(int byte_no) {
- transition(vtos, vtos);
- assert(byte_no == f1_byte, "use this argument");
- prepare_invoke(byte_no, rax, rbx, // get f1 Klass*, f2 itable index
- rcx, rdx); // recv, flags
-
- // rax: interface klass (from f1)
- // rbx: itable index (from f2)
- // rcx: receiver
- // rdx: flags
-
- // Special case of invokeinterface called for virtual method of
- // java.lang.Object. See cpCacheOop.cpp for details.
- // This code isn't produced by javac, but could be produced by
- // another compliant java compiler.
- Label notMethod;
- __ movl(r14, rdx);
- __ andl(r14, (1 << ConstantPoolCacheEntry::is_forced_virtual_shift));
- __ jcc(Assembler::zero, notMethod);
-
- invokevirtual_helper(rbx, rcx, rdx);
- __ bind(notMethod);
-
- // Get receiver klass into rdx - also a null check
- __ restore_locals(); // restore r14
- __ null_check(rcx, oopDesc::klass_offset_in_bytes());
- __ load_klass(rdx, rcx);
-
- // profile this call
- __ profile_virtual_call(rdx, r13, r14);
-
- Label no_such_interface, no_such_method;
-
- __ lookup_interface_method(// inputs: rec. class, interface, itable index
- rdx, rax, rbx,
- // outputs: method, scan temp. reg
- rbx, r13,
- no_such_interface);
-
- // rbx: Method* to call
- // rcx: receiver
- // Check for abstract method error
- // Note: This should be done more efficiently via a throw_abstract_method_error
- // interpreter entry point and a conditional jump to it in case of a null
- // method.
- __ testptr(rbx, rbx);
- __ jcc(Assembler::zero, no_such_method);
-
- __ profile_arguments_type(rdx, rbx, r13, true);
-
- // do the call
- // rcx: receiver
- // rbx,: Method*
- __ jump_from_interpreted(rbx, rdx);
- __ should_not_reach_here();
-
- // exception handling code follows...
- // note: must restore interpreter registers to canonical
- // state for exception handling to work correctly!
-
- __ bind(no_such_method);
- // throw exception
- __ pop(rbx); // pop return address (pushed by prepare_invoke)
- __ restore_bcp(); // r13 must be correct for exception handler (was destroyed)
- __ restore_locals(); // make sure locals pointer is correct as well (was destroyed)
- __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::throw_AbstractMethodError));
- // the call_VM checks for exception, so we should never return here.
- __ should_not_reach_here();
-
- __ bind(no_such_interface);
- // throw exception
- __ pop(rbx); // pop return address (pushed by prepare_invoke)
- __ restore_bcp(); // r13 must be correct for exception handler (was destroyed)
- __ restore_locals(); // make sure locals pointer is correct as well (was destroyed)
- __ call_VM(noreg, CAST_FROM_FN_PTR(address,
- InterpreterRuntime::throw_IncompatibleClassChangeError));
- // the call_VM checks for exception, so we should never return here.
- __ should_not_reach_here();
-}
-
-
-void TemplateTable::invokehandle(int byte_no) {
- transition(vtos, vtos);
- assert(byte_no == f1_byte, "use this argument");
- const Register rbx_method = rbx;
- const Register rax_mtype = rax;
- const Register rcx_recv = rcx;
- const Register rdx_flags = rdx;
-
- prepare_invoke(byte_no, rbx_method, rax_mtype, rcx_recv);
- __ verify_method_ptr(rbx_method);
- __ verify_oop(rcx_recv);
- __ null_check(rcx_recv);
-
- // rax: MethodType object (from cpool->resolved_references[f1], if necessary)
- // rbx: MH.invokeExact_MT method (from f2)
-
- // Note: rax_mtype is already pushed (if necessary) by prepare_invoke
-
- // FIXME: profile the LambdaForm also
- __ profile_final_call(rax);
- __ profile_arguments_type(rdx, rbx_method, r13, true);
-
- __ jump_from_interpreted(rbx_method, rdx);
-}
-
-
-void TemplateTable::invokedynamic(int byte_no) {
- transition(vtos, vtos);
- assert(byte_no == f1_byte, "use this argument");
-
- const Register rbx_method = rbx;
- const Register rax_callsite = rax;
-
- prepare_invoke(byte_no, rbx_method, rax_callsite);
-
- // rax: CallSite object (from cpool->resolved_references[f1])
- // rbx: MH.linkToCallSite method (from f2)
-
- // Note: rax_callsite is already pushed by prepare_invoke
-
- // %%% should make a type profile for any invokedynamic that takes a ref argument
- // profile this call
- __ profile_call(r13);
- __ profile_arguments_type(rdx, rbx_method, r13, false);
-
- __ verify_oop(rax_callsite);
-
- __ jump_from_interpreted(rbx_method, rdx);
-}
-
-
-//-----------------------------------------------------------------------------
-// Allocation
-
-void TemplateTable::_new() {
- transition(vtos, atos);
- __ get_unsigned_2_byte_index_at_bcp(rdx, 1);
- Label slow_case;
- Label done;
- Label initialize_header;
- Label initialize_object; // including clearing the fields
- Label allocate_shared;
-
- __ get_cpool_and_tags(rsi, rax);
- // Make sure the class we're about to instantiate has been resolved.
- // This is done before loading InstanceKlass to be consistent with the order
- // how Constant Pool is updated (see ConstantPool::klass_at_put)
- const int tags_offset = Array<u1>::base_offset_in_bytes();
- __ cmpb(Address(rax, rdx, Address::times_1, tags_offset),
- JVM_CONSTANT_Class);
- __ jcc(Assembler::notEqual, slow_case);
-
- // get InstanceKlass
- __ movptr(rsi, Address(rsi, rdx,
- Address::times_8, sizeof(ConstantPool)));
-
- // make sure klass is initialized & doesn't have finalizer
- // make sure klass is fully initialized
- __ cmpb(Address(rsi,
- InstanceKlass::init_state_offset()),
- InstanceKlass::fully_initialized);
- __ jcc(Assembler::notEqual, slow_case);
-
- // get instance_size in InstanceKlass (scaled to a count of bytes)
- __ movl(rdx,
- Address(rsi,
- Klass::layout_helper_offset()));
- // test to see if it has a finalizer or is malformed in some way
- __ testl(rdx, Klass::_lh_instance_slow_path_bit);
- __ jcc(Assembler::notZero, slow_case);
-
- // Allocate the instance
- // 1) Try to allocate in the TLAB
- // 2) if fail and the object is large allocate in the shared Eden
- // 3) if the above fails (or is not applicable), go to a slow case
- // (creates a new TLAB, etc.)
-
- const bool allow_shared_alloc =
- Universe::heap()->supports_inline_contig_alloc();
-
- if (UseTLAB) {
- __ movptr(rax, Address(r15_thread, in_bytes(JavaThread::tlab_top_offset())));
- __ lea(rbx, Address(rax, rdx, Address::times_1));
- __ cmpptr(rbx, Address(r15_thread, in_bytes(JavaThread::tlab_end_offset())));
- __ jcc(Assembler::above, allow_shared_alloc ? allocate_shared : slow_case);
- __ movptr(Address(r15_thread, in_bytes(JavaThread::tlab_top_offset())), rbx);
- if (ZeroTLAB) {
- // the fields have been already cleared
- __ jmp(initialize_header);
- } else {
- // initialize both the header and fields
- __ jmp(initialize_object);
- }
- }
-
- // Allocation in the shared Eden, if allowed.
- //
- // rdx: instance size in bytes
- if (allow_shared_alloc) {
- __ bind(allocate_shared);
-
- ExternalAddress top((address)Universe::heap()->top_addr());
- ExternalAddress end((address)Universe::heap()->end_addr());
-
- const Register RtopAddr = rscratch1;
- const Register RendAddr = rscratch2;
-
- __ lea(RtopAddr, top);
- __ lea(RendAddr, end);
- __ movptr(rax, Address(RtopAddr, 0));
-
- // For retries rax gets set by cmpxchgq
- Label retry;
- __ bind(retry);
- __ lea(rbx, Address(rax, rdx, Address::times_1));
- __ cmpptr(rbx, Address(RendAddr, 0));
- __ jcc(Assembler::above, slow_case);
-
- // Compare rax with the top addr, and if still equal, store the new
- // top addr in rbx at the address of the top addr pointer. Sets ZF if was
- // equal, and clears it otherwise. Use lock prefix for atomicity on MPs.
- //
- // rax: object begin
- // rbx: object end
- // rdx: instance size in bytes
- if (os::is_MP()) {
- __ lock();
- }
- __ cmpxchgptr(rbx, Address(RtopAddr, 0));
-
- // if someone beat us on the allocation, try again, otherwise continue
- __ jcc(Assembler::notEqual, retry);
-
- __ incr_allocated_bytes(r15_thread, rdx, 0);
- }
-
- if (UseTLAB || Universe::heap()->supports_inline_contig_alloc()) {
- // The object is initialized before the header. If the object size is
- // zero, go directly to the header initialization.
- __ bind(initialize_object);
- __ decrementl(rdx, sizeof(oopDesc));
- __ jcc(Assembler::zero, initialize_header);
-
- // Initialize object fields
- __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code)
- __ shrl(rdx, LogBytesPerLong); // divide by oopSize to simplify the loop
- {
- Label loop;
- __ bind(loop);
- __ movq(Address(rax, rdx, Address::times_8,
- sizeof(oopDesc) - oopSize),
- rcx);
- __ decrementl(rdx);
- __ jcc(Assembler::notZero, loop);
- }
-
- // initialize object header only.
- __ bind(initialize_header);
- if (UseBiasedLocking) {
- __ movptr(rscratch1, Address(rsi, Klass::prototype_header_offset()));
- __ movptr(Address(rax, oopDesc::mark_offset_in_bytes()), rscratch1);
- } else {
- __ movptr(Address(rax, oopDesc::mark_offset_in_bytes()),
- (intptr_t) markOopDesc::prototype()); // header (address 0x1)
- }
- __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code)
- __ store_klass_gap(rax, rcx); // zero klass gap for compressed oops
- __ store_klass(rax, rsi); // store klass last
-
- {
- SkipIfEqual skip(_masm, &DTraceAllocProbes, false);
- // Trigger dtrace event for fastpath
- __ push(atos); // save the return value
- __ call_VM_leaf(
- CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), rax);
- __ pop(atos); // restore the return value
-
- }
- __ jmp(done);
- }
-
-
- // slow case
- __ bind(slow_case);
- __ get_constant_pool(c_rarg1);
- __ get_unsigned_2_byte_index_at_bcp(c_rarg2, 1);
- call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::_new), c_rarg1, c_rarg2);
- __ verify_oop(rax);
-
- // continue
- __ bind(done);
-}
-
-void TemplateTable::newarray() {
- transition(itos, atos);
- __ load_unsigned_byte(c_rarg1, at_bcp(1));
- __ movl(c_rarg2, rax);
- call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::newarray),
- c_rarg1, c_rarg2);
-}
-
-void TemplateTable::anewarray() {
- transition(itos, atos);
- __ get_unsigned_2_byte_index_at_bcp(c_rarg2, 1);
- __ get_constant_pool(c_rarg1);
- __ movl(c_rarg3, rax);
- call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::anewarray),
- c_rarg1, c_rarg2, c_rarg3);
-}
-
-void TemplateTable::arraylength() {
- transition(atos, itos);
- __ null_check(rax, arrayOopDesc::length_offset_in_bytes());
- __ movl(rax, Address(rax, arrayOopDesc::length_offset_in_bytes()));
-}
-
-void TemplateTable::checkcast() {
- transition(atos, atos);
- Label done, is_null, ok_is_subtype, quicked, resolved;
- __ testptr(rax, rax); // object is in rax
- __ jcc(Assembler::zero, is_null);
-
- // Get cpool & tags index
- __ get_cpool_and_tags(rcx, rdx); // rcx=cpool, rdx=tags array
- __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // rbx=index
- // See if bytecode has already been quicked
- __ cmpb(Address(rdx, rbx,
- Address::times_1,
- Array<u1>::base_offset_in_bytes()),
- JVM_CONSTANT_Class);
- __ jcc(Assembler::equal, quicked);
- __ push(atos); // save receiver for result, and for GC
- call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc));
- // vm_result_2 has metadata result
- __ get_vm_result_2(rax, r15_thread);
- __ pop_ptr(rdx); // restore receiver
- __ jmpb(resolved);
-
- // Get superklass in rax and subklass in rbx
- __ bind(quicked);
- __ mov(rdx, rax); // Save object in rdx; rax needed for subtype check
- __ movptr(rax, Address(rcx, rbx,
- Address::times_8, sizeof(ConstantPool)));
-
- __ bind(resolved);
- __ load_klass(rbx, rdx);
-
- // Generate subtype check. Blows rcx, rdi. Object in rdx.
- // Superklass in rax. Subklass in rbx.
- __ gen_subtype_check(rbx, ok_is_subtype);
-
- // Come here on failure
- __ push_ptr(rdx);
- // object is at TOS
- __ jump(ExternalAddress(Interpreter::_throw_ClassCastException_entry));
-
- // Come here on success
- __ bind(ok_is_subtype);
- __ mov(rax, rdx); // Restore object in rdx
-
- // Collect counts on whether this check-cast sees NULLs a lot or not.
- if (ProfileInterpreter) {
- __ jmp(done);
- __ bind(is_null);
- __ profile_null_seen(rcx);
- } else {
- __ bind(is_null); // same as 'done'
- }
- __ bind(done);
-}
-
-void TemplateTable::instanceof() {
- transition(atos, itos);
- Label done, is_null, ok_is_subtype, quicked, resolved;
- __ testptr(rax, rax);
- __ jcc(Assembler::zero, is_null);
-
- // Get cpool & tags index
- __ get_cpool_and_tags(rcx, rdx); // rcx=cpool, rdx=tags array
- __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // rbx=index
- // See if bytecode has already been quicked
- __ cmpb(Address(rdx, rbx,
- Address::times_1,
- Array<u1>::base_offset_in_bytes()),
- JVM_CONSTANT_Class);
- __ jcc(Assembler::equal, quicked);
-
- __ push(atos); // save receiver for result, and for GC
- call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc));
- // vm_result_2 has metadata result
- __ get_vm_result_2(rax, r15_thread);
- __ pop_ptr(rdx); // restore receiver
- __ verify_oop(rdx);
- __ load_klass(rdx, rdx);
- __ jmpb(resolved);
-
- // Get superklass in rax and subklass in rdx
- __ bind(quicked);
- __ load_klass(rdx, rax);
- __ movptr(rax, Address(rcx, rbx,
- Address::times_8, sizeof(ConstantPool)));
-
- __ bind(resolved);
-
- // Generate subtype check. Blows rcx, rdi
- // Superklass in rax. Subklass in rdx.
- __ gen_subtype_check(rdx, ok_is_subtype);
-
- // Come here on failure
- __ xorl(rax, rax);
- __ jmpb(done);
- // Come here on success
- __ bind(ok_is_subtype);
- __ movl(rax, 1);
-
- // Collect counts on whether this test sees NULLs a lot or not.
- if (ProfileInterpreter) {
- __ jmp(done);
- __ bind(is_null);
- __ profile_null_seen(rcx);
- } else {
- __ bind(is_null); // same as 'done'
- }
- __ bind(done);
- // rax = 0: obj == NULL or obj is not an instanceof the specified klass
- // rax = 1: obj != NULL and obj is an instanceof the specified klass
-}
-
-//-----------------------------------------------------------------------------
-// Breakpoints
-void TemplateTable::_breakpoint() {
- // Note: We get here even if we are single stepping..
- // jbug inists on setting breakpoints at every bytecode
- // even if we are in single step mode.
-
- transition(vtos, vtos);
-
- // get the unpatched byte code
- __ get_method(c_rarg1);
- __ call_VM(noreg,
- CAST_FROM_FN_PTR(address,
- InterpreterRuntime::get_original_bytecode_at),
- c_rarg1, r13);
- __ mov(rbx, rax);
-
- // post the breakpoint event
- __ get_method(c_rarg1);
- __ call_VM(noreg,
- CAST_FROM_FN_PTR(address, InterpreterRuntime::_breakpoint),
- c_rarg1, r13);
-
- // complete the execution of original bytecode
- __ dispatch_only_normal(vtos);
-}
-
-//-----------------------------------------------------------------------------
-// Exceptions
-
-void TemplateTable::athrow() {
- transition(atos, vtos);
- __ null_check(rax);
- __ jump(ExternalAddress(Interpreter::throw_exception_entry()));
-}
-
-//-----------------------------------------------------------------------------
-// Synchronization
-//
-// Note: monitorenter & exit are symmetric routines; which is reflected
-// in the assembly code structure as well
-//
-// Stack layout:
-//
-// [expressions ] <--- rsp = expression stack top
-// ..
-// [expressions ]
-// [monitor entry] <--- monitor block top = expression stack bot
-// ..
-// [monitor entry]
-// [frame data ] <--- monitor block bot
-// ...
-// [saved rbp ] <--- rbp
-void TemplateTable::monitorenter() {
- transition(atos, vtos);
-
- // check for NULL object
- __ null_check(rax);
-
- const Address monitor_block_top(
- rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize);
- const Address monitor_block_bot(
- rbp, frame::interpreter_frame_initial_sp_offset * wordSize);
- const int entry_size = frame::interpreter_frame_monitor_size() * wordSize;
-
- Label allocated;
-
- // initialize entry pointer
- __ xorl(c_rarg1, c_rarg1); // points to free slot or NULL
-
- // find a free slot in the monitor block (result in c_rarg1)
- {
- Label entry, loop, exit;
- __ movptr(c_rarg3, monitor_block_top); // points to current entry,
- // starting with top-most entry
- __ lea(c_rarg2, monitor_block_bot); // points to word before bottom
- // of monitor block
- __ jmpb(entry);
-
- __ bind(loop);
- // check if current entry is used
- __ cmpptr(Address(c_rarg3, BasicObjectLock::obj_offset_in_bytes()), (int32_t) NULL_WORD);
- // if not used then remember entry in c_rarg1
- __ cmov(Assembler::equal, c_rarg1, c_rarg3);
- // check if current entry is for same object
- __ cmpptr(rax, Address(c_rarg3, BasicObjectLock::obj_offset_in_bytes()));
- // if same object then stop searching
- __ jccb(Assembler::equal, exit);
- // otherwise advance to next entry
- __ addptr(c_rarg3, entry_size);
- __ bind(entry);
- // check if bottom reached
- __ cmpptr(c_rarg3, c_rarg2);
- // if not at bottom then check this entry
- __ jcc(Assembler::notEqual, loop);
- __ bind(exit);
- }
-
- __ testptr(c_rarg1, c_rarg1); // check if a slot has been found
- __ jcc(Assembler::notZero, allocated); // if found, continue with that one
-
- // allocate one if there's no free slot
- {
- Label entry, loop;
- // 1. compute new pointers // rsp: old expression stack top
- __ movptr(c_rarg1, monitor_block_bot); // c_rarg1: old expression stack bottom
- __ subptr(rsp, entry_size); // move expression stack top
- __ subptr(c_rarg1, entry_size); // move expression stack bottom
- __ mov(c_rarg3, rsp); // set start value for copy loop
- __ movptr(monitor_block_bot, c_rarg1); // set new monitor block bottom
- __ jmp(entry);
- // 2. move expression stack contents
- __ bind(loop);
- __ movptr(c_rarg2, Address(c_rarg3, entry_size)); // load expression stack
- // word from old location
- __ movptr(Address(c_rarg3, 0), c_rarg2); // and store it at new location
- __ addptr(c_rarg3, wordSize); // advance to next word
- __ bind(entry);
- __ cmpptr(c_rarg3, c_rarg1); // check if bottom reached
- __ jcc(Assembler::notEqual, loop); // if not at bottom then
- // copy next word
- }
-
- // call run-time routine
- // c_rarg1: points to monitor entry
- __ bind(allocated);
-
- // Increment bcp to point to the next bytecode, so exception
- // handling for async. exceptions work correctly.
- // The object has already been poped from the stack, so the
- // expression stack looks correct.
- __ increment(r13);
-
- // store object
- __ movptr(Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes()), rax);
- __ lock_object(c_rarg1);
-
- // check to make sure this monitor doesn't cause stack overflow after locking
- __ save_bcp(); // in case of exception
- __ generate_stack_overflow_check(0);
-
- // The bcp has already been incremented. Just need to dispatch to
- // next instruction.
- __ dispatch_next(vtos);
-}
-
-
-void TemplateTable::monitorexit() {
- transition(atos, vtos);
-
- // check for NULL object
- __ null_check(rax);
-
- const Address monitor_block_top(
- rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize);
- const Address monitor_block_bot(
- rbp, frame::interpreter_frame_initial_sp_offset * wordSize);
- const int entry_size = frame::interpreter_frame_monitor_size() * wordSize;
-
- Label found;
-
- // find matching slot
- {
- Label entry, loop;
- __ movptr(c_rarg1, monitor_block_top); // points to current entry,
- // starting with top-most entry
- __ lea(c_rarg2, monitor_block_bot); // points to word before bottom
- // of monitor block
- __ jmpb(entry);
-
- __ bind(loop);
- // check if current entry is for same object
- __ cmpptr(rax, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes()));
- // if same object then stop searching
- __ jcc(Assembler::equal, found);
- // otherwise advance to next entry
- __ addptr(c_rarg1, entry_size);
- __ bind(entry);
- // check if bottom reached
- __ cmpptr(c_rarg1, c_rarg2);
- // if not at bottom then check this entry
- __ jcc(Assembler::notEqual, loop);
- }
-
- // error handling. Unlocking was not block-structured
- __ call_VM(noreg, CAST_FROM_FN_PTR(address,
- InterpreterRuntime::throw_illegal_monitor_state_exception));
- __ should_not_reach_here();
-
- // call run-time routine
- // rsi: points to monitor entry
- __ bind(found);
- __ push_ptr(rax); // make sure object is on stack (contract with oopMaps)
- __ unlock_object(c_rarg1);
- __ pop_ptr(rax); // discard object
-}
-
-
-// Wide instructions
-void TemplateTable::wide() {
- transition(vtos, vtos);
- __ load_unsigned_byte(rbx, at_bcp(1));
- __ lea(rscratch1, ExternalAddress((address)Interpreter::_wentry_point));
- __ jmp(Address(rscratch1, rbx, Address::times_8));
- // Note: the r13 increment step is part of the individual wide
- // bytecode implementations
-}
-
-
-// Multi arrays
-void TemplateTable::multianewarray() {
- transition(vtos, atos);
- __ load_unsigned_byte(rax, at_bcp(3)); // get number of dimensions
- // last dim is on top of stack; we want address of first one:
- // first_addr = last_addr + (ndims - 1) * wordSize
- __ lea(c_rarg1, Address(rsp, rax, Address::times_8, -wordSize));
- call_VM(rax,
- CAST_FROM_FN_PTR(address, InterpreterRuntime::multianewarray),
- c_rarg1);
- __ load_unsigned_byte(rbx, at_bcp(3));
- __ lea(rsp, Address(rsp, rbx, Address::times_8));
-}
-#endif // !CC_INTERP