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Issue 6793040: Remove unused last_pc_ in AssemblerX64. (Closed)
Patch Set: Created 9 years, 8 months ago
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1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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2195 2195
2196 2196
2197 void MacroAssembler::EnterExitFrameEpilogue(int arg_stack_space, 2197 void MacroAssembler::EnterExitFrameEpilogue(int arg_stack_space,
2198 bool save_doubles) { 2198 bool save_doubles) {
2199 #ifdef _WIN64 2199 #ifdef _WIN64
2200 const int kShadowSpace = 4; 2200 const int kShadowSpace = 4;
2201 arg_stack_space += kShadowSpace; 2201 arg_stack_space += kShadowSpace;
2202 #endif 2202 #endif
2203 // Optionally save all XMM registers. 2203 // Optionally save all XMM registers.
2204 if (save_doubles) { 2204 if (save_doubles) {
2205 CpuFeatures::Scope scope(SSE2);
2206 int space = XMMRegister::kNumRegisters * kDoubleSize + 2205 int space = XMMRegister::kNumRegisters * kDoubleSize +
2207 arg_stack_space * kPointerSize; 2206 arg_stack_space * kPointerSize;
2208 subq(rsp, Immediate(space)); 2207 subq(rsp, Immediate(space));
2209 int offset = -2 * kPointerSize; 2208 int offset = -2 * kPointerSize;
2210 for (int i = 0; i < XMMRegister::kNumAllocatableRegisters; i++) { 2209 for (int i = 0; i < XMMRegister::kNumAllocatableRegisters; i++) {
2211 XMMRegister reg = XMMRegister::FromAllocationIndex(i); 2210 XMMRegister reg = XMMRegister::FromAllocationIndex(i);
2212 movsd(Operand(rbp, offset - ((i + 1) * kDoubleSize)), reg); 2211 movsd(Operand(rbp, offset - ((i + 1) * kDoubleSize)), reg);
2213 } 2212 }
2214 } else if (arg_stack_space > 0) { 2213 } else if (arg_stack_space > 0) {
2215 subq(rsp, Immediate(arg_stack_space * kPointerSize)); 2214 subq(rsp, Immediate(arg_stack_space * kPointerSize));
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2903 CPU::FlushICache(address_, size_); 2902 CPU::FlushICache(address_, size_);
2904 2903
2905 // Check that the code was patched as expected. 2904 // Check that the code was patched as expected.
2906 ASSERT(masm_.pc_ == address_ + size_); 2905 ASSERT(masm_.pc_ == address_ + size_);
2907 ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); 2906 ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap);
2908 } 2907 }
2909 2908
2910 } } // namespace v8::internal 2909 } } // namespace v8::internal
2911 2910
2912 #endif // V8_TARGET_ARCH_X64 2911 #endif // V8_TARGET_ARCH_X64
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