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1 | 1 |
2 // Copyright 2011 the V8 project authors. All rights reserved. | 2 // Copyright 2011 the V8 project authors. All rights reserved. |
3 // Use of this source code is governed by a BSD-style license that can be | 3 // Use of this source code is governed by a BSD-style license that can be |
4 // found in the LICENSE file. | 4 // found in the LICENSE file. |
5 | 5 |
6 #include "v8.h" | 6 #include "v8.h" |
7 | 7 |
8 #include "codegen.h" | 8 #include "codegen.h" |
9 #include "deoptimizer.h" | 9 #include "deoptimizer.h" |
10 #include "full-codegen.h" | 10 #include "full-codegen.h" |
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23 void Deoptimizer::PatchCodeForDeoptimization(Isolate* isolate, Code* code) { | 23 void Deoptimizer::PatchCodeForDeoptimization(Isolate* isolate, Code* code) { |
24 Address code_start_address = code->instruction_start(); | 24 Address code_start_address = code->instruction_start(); |
25 // Invalidate the relocation information, as it will become invalid by the | 25 // Invalidate the relocation information, as it will become invalid by the |
26 // code patching below, and is not needed any more. | 26 // code patching below, and is not needed any more. |
27 code->InvalidateRelocation(); | 27 code->InvalidateRelocation(); |
28 | 28 |
29 if (FLAG_zap_code_space) { | 29 if (FLAG_zap_code_space) { |
30 // Fail hard and early if we enter this code object again. | 30 // Fail hard and early if we enter this code object again. |
31 byte* pointer = code->FindCodeAgeSequence(); | 31 byte* pointer = code->FindCodeAgeSequence(); |
32 if (pointer != NULL) { | 32 if (pointer != NULL) { |
33 pointer += kNoCodeAgeSequenceLength * Assembler::kInstrSize; | 33 pointer += kNoCodeAgeSequenceLength; |
34 } else { | 34 } else { |
35 pointer = code->instruction_start(); | 35 pointer = code->instruction_start(); |
36 } | 36 } |
37 CodePatcher patcher(pointer, 1); | 37 CodePatcher patcher(pointer, 1); |
38 patcher.masm()->break_(0xCC); | 38 patcher.masm()->break_(0xCC); |
39 | 39 |
40 DeoptimizationInputData* data = | 40 DeoptimizationInputData* data = |
41 DeoptimizationInputData::cast(code->deoptimization_data()); | 41 DeoptimizationInputData::cast(code->deoptimization_data()); |
42 int osr_offset = data->OsrPcOffset()->value(); | 42 int osr_offset = data->OsrPcOffset()->value(); |
43 if (osr_offset > 0) { | 43 if (osr_offset > 0) { |
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374 void FrameDescription::SetCallerConstantPool(unsigned offset, intptr_t value) { | 374 void FrameDescription::SetCallerConstantPool(unsigned offset, intptr_t value) { |
375 // No out-of-line constant pool support. | 375 // No out-of-line constant pool support. |
376 UNREACHABLE(); | 376 UNREACHABLE(); |
377 } | 377 } |
378 | 378 |
379 | 379 |
380 #undef __ | 380 #undef __ |
381 | 381 |
382 | 382 |
383 } } // namespace v8::internal | 383 } } // namespace v8::internal |
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