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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/arm/codegen-arm.h" | 5 #include "src/arm/codegen-arm.h" |
6 | 6 |
7 #if V8_TARGET_ARCH_ARM | 7 #if V8_TARGET_ARCH_ARM |
8 | 8 |
9 #include "src/arm/simulator-arm.h" | 9 #include "src/arm/simulator-arm.h" |
10 #include "src/codegen.h" | 10 #include "src/codegen.h" |
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891 DCHECK(young_sequence_.length() == kNoCodeAgeSequenceLength); | 891 DCHECK(young_sequence_.length() == kNoCodeAgeSequenceLength); |
892 // Since patcher is a large object, allocate it dynamically when needed, | 892 // Since patcher is a large object, allocate it dynamically when needed, |
893 // to avoid overloading the stack in stress conditions. | 893 // to avoid overloading the stack in stress conditions. |
894 // DONT_FLUSH is used because the CodeAgingHelper is initialized early in | 894 // DONT_FLUSH is used because the CodeAgingHelper is initialized early in |
895 // the process, before ARM simulator ICache is setup. | 895 // the process, before ARM simulator ICache is setup. |
896 base::SmartPointer<CodePatcher> patcher( | 896 base::SmartPointer<CodePatcher> patcher( |
897 new CodePatcher(isolate, young_sequence_.start(), | 897 new CodePatcher(isolate, young_sequence_.start(), |
898 young_sequence_.length() / Assembler::kInstrSize, | 898 young_sequence_.length() / Assembler::kInstrSize, |
899 CodePatcher::DONT_FLUSH)); | 899 CodePatcher::DONT_FLUSH)); |
900 PredictableCodeSizeScope scope(patcher->masm(), young_sequence_.length()); | 900 PredictableCodeSizeScope scope(patcher->masm(), young_sequence_.length()); |
901 patcher->masm()->PushFixedFrame(r1); | 901 patcher->masm()->PushStandardFrame(r1); |
902 patcher->masm()->nop(ip.code()); | 902 patcher->masm()->nop(ip.code()); |
903 patcher->masm()->add( | |
904 fp, sp, Operand(StandardFrameConstants::kFixedFrameSizeFromFp)); | |
905 } | 903 } |
906 | 904 |
907 | 905 |
908 #ifdef DEBUG | 906 #ifdef DEBUG |
909 bool CodeAgingHelper::IsOld(byte* candidate) const { | 907 bool CodeAgingHelper::IsOld(byte* candidate) const { |
910 return Memory::uint32_at(candidate) == kCodeAgePatchFirstInstruction; | 908 return Memory::uint32_at(candidate) == kCodeAgePatchFirstInstruction; |
911 } | 909 } |
912 #endif | 910 #endif |
913 | 911 |
914 | 912 |
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949 patcher.masm()->ldr(pc, MemOperand(pc, -4)); | 947 patcher.masm()->ldr(pc, MemOperand(pc, -4)); |
950 patcher.masm()->emit_code_stub_address(stub); | 948 patcher.masm()->emit_code_stub_address(stub); |
951 } | 949 } |
952 } | 950 } |
953 | 951 |
954 | 952 |
955 } // namespace internal | 953 } // namespace internal |
956 } // namespace v8 | 954 } // namespace v8 |
957 | 955 |
958 #endif // V8_TARGET_ARCH_ARM | 956 #endif // V8_TARGET_ARCH_ARM |
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