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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/v8.h" | 5 #include "src/v8.h" |
6 | 6 |
7 #if V8_TARGET_ARCH_IA32 | 7 #if V8_TARGET_ARCH_IA32 |
8 | 8 |
9 #include "src/bootstrapper.h" | 9 #include "src/bootstrapper.h" |
10 #include "src/codegen.h" | 10 #include "src/codegen.h" |
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985 const int offset = -2 * kPointerSize; | 985 const int offset = -2 * kPointerSize; |
986 for (int i = 0; i < XMMRegister::kMaxNumRegisters; i++) { | 986 for (int i = 0; i < XMMRegister::kMaxNumRegisters; i++) { |
987 XMMRegister reg = XMMRegister::from_code(i); | 987 XMMRegister reg = XMMRegister::from_code(i); |
988 movsd(Operand(ebp, offset - ((i + 1) * kDoubleSize)), reg); | 988 movsd(Operand(ebp, offset - ((i + 1) * kDoubleSize)), reg); |
989 } | 989 } |
990 } else { | 990 } else { |
991 sub(esp, Immediate(argc * kPointerSize)); | 991 sub(esp, Immediate(argc * kPointerSize)); |
992 } | 992 } |
993 | 993 |
994 // Get the required frame alignment for the OS. | 994 // Get the required frame alignment for the OS. |
995 const int kFrameAlignment = OS::ActivationFrameAlignment(); | 995 const int kFrameAlignment = base::OS::ActivationFrameAlignment(); |
996 if (kFrameAlignment > 0) { | 996 if (kFrameAlignment > 0) { |
997 ASSERT(IsPowerOf2(kFrameAlignment)); | 997 ASSERT(IsPowerOf2(kFrameAlignment)); |
998 and_(esp, -kFrameAlignment); | 998 and_(esp, -kFrameAlignment); |
999 } | 999 } |
1000 | 1000 |
1001 // Patch the saved entry sp. | 1001 // Patch the saved entry sp. |
1002 mov(Operand(ebp, ExitFrameConstants::kSPOffset), esp); | 1002 mov(Operand(ebp, ExitFrameConstants::kSPOffset), esp); |
1003 } | 1003 } |
1004 | 1004 |
1005 | 1005 |
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2755 void MacroAssembler::Check(Condition cc, BailoutReason reason) { | 2755 void MacroAssembler::Check(Condition cc, BailoutReason reason) { |
2756 Label L; | 2756 Label L; |
2757 j(cc, &L); | 2757 j(cc, &L); |
2758 Abort(reason); | 2758 Abort(reason); |
2759 // will not return here | 2759 // will not return here |
2760 bind(&L); | 2760 bind(&L); |
2761 } | 2761 } |
2762 | 2762 |
2763 | 2763 |
2764 void MacroAssembler::CheckStackAlignment() { | 2764 void MacroAssembler::CheckStackAlignment() { |
2765 int frame_alignment = OS::ActivationFrameAlignment(); | 2765 int frame_alignment = base::OS::ActivationFrameAlignment(); |
2766 int frame_alignment_mask = frame_alignment - 1; | 2766 int frame_alignment_mask = frame_alignment - 1; |
2767 if (frame_alignment > kPointerSize) { | 2767 if (frame_alignment > kPointerSize) { |
2768 ASSERT(IsPowerOf2(frame_alignment)); | 2768 ASSERT(IsPowerOf2(frame_alignment)); |
2769 Label alignment_as_expected; | 2769 Label alignment_as_expected; |
2770 test(esp, Immediate(frame_alignment_mask)); | 2770 test(esp, Immediate(frame_alignment_mask)); |
2771 j(zero, &alignment_as_expected); | 2771 j(zero, &alignment_as_expected); |
2772 // Abort if stack is not aligned. | 2772 // Abort if stack is not aligned. |
2773 int3(); | 2773 int3(); |
2774 bind(&alignment_as_expected); | 2774 bind(&alignment_as_expected); |
2775 } | 2775 } |
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2992 | 2992 |
2993 cmp(index, Immediate(Smi::FromInt(0))); | 2993 cmp(index, Immediate(Smi::FromInt(0))); |
2994 Check(greater_equal, kIndexIsNegative); | 2994 Check(greater_equal, kIndexIsNegative); |
2995 | 2995 |
2996 // Restore the index | 2996 // Restore the index |
2997 SmiUntag(index); | 2997 SmiUntag(index); |
2998 } | 2998 } |
2999 | 2999 |
3000 | 3000 |
3001 void MacroAssembler::PrepareCallCFunction(int num_arguments, Register scratch) { | 3001 void MacroAssembler::PrepareCallCFunction(int num_arguments, Register scratch) { |
3002 int frame_alignment = OS::ActivationFrameAlignment(); | 3002 int frame_alignment = base::OS::ActivationFrameAlignment(); |
3003 if (frame_alignment != 0) { | 3003 if (frame_alignment != 0) { |
3004 // Make stack end at alignment and make room for num_arguments words | 3004 // Make stack end at alignment and make room for num_arguments words |
3005 // and the original value of esp. | 3005 // and the original value of esp. |
3006 mov(scratch, esp); | 3006 mov(scratch, esp); |
3007 sub(esp, Immediate((num_arguments + 1) * kPointerSize)); | 3007 sub(esp, Immediate((num_arguments + 1) * kPointerSize)); |
3008 ASSERT(IsPowerOf2(frame_alignment)); | 3008 ASSERT(IsPowerOf2(frame_alignment)); |
3009 and_(esp, -frame_alignment); | 3009 and_(esp, -frame_alignment); |
3010 mov(Operand(esp, num_arguments * kPointerSize), scratch); | 3010 mov(Operand(esp, num_arguments * kPointerSize), scratch); |
3011 } else { | 3011 } else { |
3012 sub(esp, Immediate(num_arguments * kPointerSize)); | 3012 sub(esp, Immediate(num_arguments * kPointerSize)); |
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3024 | 3024 |
3025 void MacroAssembler::CallCFunction(Register function, | 3025 void MacroAssembler::CallCFunction(Register function, |
3026 int num_arguments) { | 3026 int num_arguments) { |
3027 ASSERT(has_frame()); | 3027 ASSERT(has_frame()); |
3028 // Check stack alignment. | 3028 // Check stack alignment. |
3029 if (emit_debug_code()) { | 3029 if (emit_debug_code()) { |
3030 CheckStackAlignment(); | 3030 CheckStackAlignment(); |
3031 } | 3031 } |
3032 | 3032 |
3033 call(function); | 3033 call(function); |
3034 if (OS::ActivationFrameAlignment() != 0) { | 3034 if (base::OS::ActivationFrameAlignment() != 0) { |
3035 mov(esp, Operand(esp, num_arguments * kPointerSize)); | 3035 mov(esp, Operand(esp, num_arguments * kPointerSize)); |
3036 } else { | 3036 } else { |
3037 add(esp, Immediate(num_arguments * kPointerSize)); | 3037 add(esp, Immediate(num_arguments * kPointerSize)); |
3038 } | 3038 } |
3039 } | 3039 } |
3040 | 3040 |
3041 | 3041 |
3042 bool AreAliased(Register r1, Register r2, Register r3, Register r4) { | 3042 bool AreAliased(Register r1, Register r2, Register r3, Register r4) { |
3043 if (r1.is(r2)) return true; | 3043 if (r1.is(r2)) return true; |
3044 if (r1.is(r3)) return true; | 3044 if (r1.is(r3)) return true; |
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3056 masm_(NULL, address, size + Assembler::kGap) { | 3056 masm_(NULL, address, size + Assembler::kGap) { |
3057 // Create a new macro assembler pointing to the address of the code to patch. | 3057 // Create a new macro assembler pointing to the address of the code to patch. |
3058 // The size is adjusted with kGap on order for the assembler to generate size | 3058 // The size is adjusted with kGap on order for the assembler to generate size |
3059 // bytes of instructions without failing with buffer size constraints. | 3059 // bytes of instructions without failing with buffer size constraints. |
3060 ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); | 3060 ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
3061 } | 3061 } |
3062 | 3062 |
3063 | 3063 |
3064 CodePatcher::~CodePatcher() { | 3064 CodePatcher::~CodePatcher() { |
3065 // Indicate that code has changed. | 3065 // Indicate that code has changed. |
3066 CPU::FlushICache(address_, size_); | 3066 CpuFeatures::FlushICache(address_, size_); |
3067 | 3067 |
3068 // Check that the code was patched as expected. | 3068 // Check that the code was patched as expected. |
3069 ASSERT(masm_.pc_ == address_ + size_); | 3069 ASSERT(masm_.pc_ == address_ + size_); |
3070 ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); | 3070 ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap); |
3071 } | 3071 } |
3072 | 3072 |
3073 | 3073 |
3074 void MacroAssembler::CheckPageFlag( | 3074 void MacroAssembler::CheckPageFlag( |
3075 Register object, | 3075 Register object, |
3076 Register scratch, | 3076 Register scratch, |
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3405 if (ms.shift() > 0) sar(edx, ms.shift()); | 3405 if (ms.shift() > 0) sar(edx, ms.shift()); |
3406 mov(eax, dividend); | 3406 mov(eax, dividend); |
3407 shr(eax, 31); | 3407 shr(eax, 31); |
3408 add(edx, eax); | 3408 add(edx, eax); |
3409 } | 3409 } |
3410 | 3410 |
3411 | 3411 |
3412 } } // namespace v8::internal | 3412 } } // namespace v8::internal |
3413 | 3413 |
3414 #endif // V8_TARGET_ARCH_IA32 | 3414 #endif // V8_TARGET_ARCH_IA32 |
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