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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 // 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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| 292 *(call_target_address - 2) = kJaeOffset; | 292 *(call_target_address - 2) = kJaeOffset; |
| 293 } | 293 } |
| 294 Assembler::set_target_address_at(call_target_address, | 294 Assembler::set_target_address_at(call_target_address, |
| 295 check_code->entry()); | 295 check_code->entry()); |
| 296 | 296 |
| 297 check_code->GetHeap()->incremental_marking()->RecordCodeTargetPatch( | 297 check_code->GetHeap()->incremental_marking()->RecordCodeTargetPatch( |
| 298 unoptimized_code, call_target_address, check_code); | 298 unoptimized_code, call_target_address, check_code); |
| 299 } | 299 } |
| 300 | 300 |
| 301 | 301 |
| 302 static int LookupBailoutId(DeoptimizationInputData* data, unsigned ast_id) { | 302 static int LookupBailoutId(DeoptimizationInputData* data, BailoutId ast_id) { |
| 303 ByteArray* translations = data->TranslationByteArray(); | 303 ByteArray* translations = data->TranslationByteArray(); |
| 304 int length = data->DeoptCount(); | 304 int length = data->DeoptCount(); |
| 305 for (int i = 0; i < length; i++) { | 305 for (int i = 0; i < length; i++) { |
| 306 if (static_cast<unsigned>(data->AstId(i)->value()) == ast_id) { | 306 if (data->AstId(i) == ast_id) { |
| 307 TranslationIterator it(translations, data->TranslationIndex(i)->value()); | 307 TranslationIterator it(translations, data->TranslationIndex(i)->value()); |
| 308 int value = it.Next(); | 308 int value = it.Next(); |
| 309 ASSERT(Translation::BEGIN == static_cast<Translation::Opcode>(value)); | 309 ASSERT(Translation::BEGIN == static_cast<Translation::Opcode>(value)); |
| 310 // Read the number of frames. | 310 // Read the number of frames. |
| 311 value = it.Next(); | 311 value = it.Next(); |
| 312 if (value == 1) return i; | 312 if (value == 1) return i; |
| 313 } | 313 } |
| 314 } | 314 } |
| 315 UNREACHABLE(); | 315 UNREACHABLE(); |
| 316 return -1; | 316 return -1; |
| 317 } | 317 } |
| 318 | 318 |
| 319 | 319 |
| 320 void Deoptimizer::DoComputeOsrOutputFrame() { | 320 void Deoptimizer::DoComputeOsrOutputFrame() { |
| 321 DeoptimizationInputData* data = DeoptimizationInputData::cast( | 321 DeoptimizationInputData* data = DeoptimizationInputData::cast( |
| 322 optimized_code_->deoptimization_data()); | 322 optimized_code_->deoptimization_data()); |
| 323 unsigned ast_id = data->OsrAstId()->value(); | 323 unsigned ast_id = data->OsrAstId()->value(); |
| 324 // TODO(kasperl): This should not be the bailout_id_. It should be | 324 // TODO(kasperl): This should not be the bailout_id_. It should be |
| 325 // the ast id. Confusing. | 325 // the ast id. Confusing. |
| 326 ASSERT(bailout_id_ == ast_id); | 326 ASSERT(bailout_id_ == ast_id); |
| 327 | 327 |
| 328 int bailout_id = LookupBailoutId(data, ast_id); | 328 int bailout_id = LookupBailoutId(data, BailoutId(ast_id)); |
| 329 unsigned translation_index = data->TranslationIndex(bailout_id)->value(); | 329 unsigned translation_index = data->TranslationIndex(bailout_id)->value(); |
| 330 ByteArray* translations = data->TranslationByteArray(); | 330 ByteArray* translations = data->TranslationByteArray(); |
| 331 | 331 |
| 332 TranslationIterator iterator(translations, translation_index); | 332 TranslationIterator iterator(translations, translation_index); |
| 333 Translation::Opcode opcode = | 333 Translation::Opcode opcode = |
| 334 static_cast<Translation::Opcode>(iterator.Next()); | 334 static_cast<Translation::Opcode>(iterator.Next()); |
| 335 ASSERT(Translation::BEGIN == opcode); | 335 ASSERT(Translation::BEGIN == opcode); |
| 336 USE(opcode); | 336 USE(opcode); |
| 337 int count = iterator.Next(); | 337 int count = iterator.Next(); |
| 338 iterator.Next(); // Drop JS frames count. | 338 iterator.Next(); // Drop JS frames count. |
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| 689 | 689 |
| 690 uint32_t pc = reinterpret_cast<uint32_t>( | 690 uint32_t pc = reinterpret_cast<uint32_t>( |
| 691 construct_stub->instruction_start() + | 691 construct_stub->instruction_start() + |
| 692 isolate_->heap()->construct_stub_deopt_pc_offset()->value()); | 692 isolate_->heap()->construct_stub_deopt_pc_offset()->value()); |
| 693 output_frame->SetPc(pc); | 693 output_frame->SetPc(pc); |
| 694 } | 694 } |
| 695 | 695 |
| 696 | 696 |
| 697 void Deoptimizer::DoComputeJSFrame(TranslationIterator* iterator, | 697 void Deoptimizer::DoComputeJSFrame(TranslationIterator* iterator, |
| 698 int frame_index) { | 698 int frame_index) { |
| 699 int node_id = iterator->Next(); | 699 BailoutId node_id = BailoutId(iterator->Next()); |
| 700 JSFunction* function; | 700 JSFunction* function; |
| 701 if (frame_index != 0) { | 701 if (frame_index != 0) { |
| 702 function = JSFunction::cast(ComputeLiteral(iterator->Next())); | 702 function = JSFunction::cast(ComputeLiteral(iterator->Next())); |
| 703 } else { | 703 } else { |
| 704 int closure_id = iterator->Next(); | 704 int closure_id = iterator->Next(); |
| 705 USE(closure_id); | 705 USE(closure_id); |
| 706 ASSERT_EQ(Translation::kSelfLiteralId, closure_id); | 706 ASSERT_EQ(Translation::kSelfLiteralId, closure_id); |
| 707 function = function_; | 707 function = function_; |
| 708 } | 708 } |
| 709 unsigned height = iterator->Next(); | 709 unsigned height = iterator->Next(); |
| 710 unsigned height_in_bytes = height * kPointerSize; | 710 unsigned height_in_bytes = height * kPointerSize; |
| 711 if (FLAG_trace_deopt) { | 711 if (FLAG_trace_deopt) { |
| 712 PrintF(" translating "); | 712 PrintF(" translating "); |
| 713 function->PrintName(); | 713 function->PrintName(); |
| 714 PrintF(" => node=%d, height=%d\n", node_id, height_in_bytes); | 714 PrintF(" => node=%d, height=%d\n", node_id.ToInt(), height_in_bytes); |
| 715 } | 715 } |
| 716 | 716 |
| 717 // The 'fixed' part of the frame consists of the incoming parameters and | 717 // The 'fixed' part of the frame consists of the incoming parameters and |
| 718 // the part described by JavaScriptFrameConstants. | 718 // the part described by JavaScriptFrameConstants. |
| 719 unsigned fixed_frame_size = ComputeFixedSize(function); | 719 unsigned fixed_frame_size = ComputeFixedSize(function); |
| 720 unsigned input_frame_size = input_->GetFrameSize(); | 720 unsigned input_frame_size = input_->GetFrameSize(); |
| 721 unsigned output_frame_size = height_in_bytes + fixed_frame_size; | 721 unsigned output_frame_size = height_in_bytes + fixed_frame_size; |
| 722 | 722 |
| 723 // Allocate and store the output frame description. | 723 // Allocate and store the output frame description. |
| 724 FrameDescription* output_frame = | 724 FrameDescription* output_frame = |
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| 1094 } | 1094 } |
| 1095 __ bind(&done); | 1095 __ bind(&done); |
| 1096 } | 1096 } |
| 1097 | 1097 |
| 1098 #undef __ | 1098 #undef __ |
| 1099 | 1099 |
| 1100 | 1100 |
| 1101 } } // namespace v8::internal | 1101 } } // namespace v8::internal |
| 1102 | 1102 |
| 1103 #endif // V8_TARGET_ARCH_IA32 | 1103 #endif // V8_TARGET_ARCH_IA32 |
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