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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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| 28 #include "v8.h" | 28 #include "v8.h" |
| 29 | 29 |
| 30 #include "codegen.h" | 30 #include "codegen.h" |
| 31 #include "deoptimizer.h" | 31 #include "deoptimizer.h" |
| 32 #include "full-codegen.h" | 32 #include "full-codegen.h" |
| 33 #include "safepoint-table.h" | 33 #include "safepoint-table.h" |
| 34 | 34 |
| 35 namespace v8 { | 35 namespace v8 { |
| 36 namespace internal { | 36 namespace internal { |
| 37 | 37 |
| 38 int Deoptimizer::table_entry_size_ = 16; | 38 const int Deoptimizer::table_entry_size_ = 16; |
| 39 | 39 |
| 40 | 40 |
| 41 int Deoptimizer::patch_size() { | 41 int Deoptimizer::patch_size() { |
| 42 const int kCallInstructionSizeInWords = 3; | 42 const int kCallInstructionSizeInWords = 3; |
| 43 return kCallInstructionSizeInWords * Assembler::kInstrSize; | 43 return kCallInstructionSizeInWords * Assembler::kInstrSize; |
| 44 } | 44 } |
| 45 | 45 |
| 46 | 46 |
| 47 void Deoptimizer::EnsureRelocSpaceForLazyDeoptimization(Handle<Code> code) { | 47 void Deoptimizer::EnsureRelocSpaceForLazyDeoptimization(Handle<Code> code) { |
| 48 // Nothing to do. No new relocation information is written for lazy | 48 // Nothing to do. No new relocation information is written for lazy |
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| 525 | 525 |
| 526 // Set the continuation for the topmost frame. | 526 // Set the continuation for the topmost frame. |
| 527 if (is_topmost && bailout_type_ != DEBUGGER) { | 527 if (is_topmost && bailout_type_ != DEBUGGER) { |
| 528 Builtins* builtins = isolate_->builtins(); | 528 Builtins* builtins = isolate_->builtins(); |
| 529 Code* continuation = (bailout_type_ == EAGER) | 529 Code* continuation = (bailout_type_ == EAGER) |
| 530 ? builtins->builtin(Builtins::kNotifyDeoptimized) | 530 ? builtins->builtin(Builtins::kNotifyDeoptimized) |
| 531 : builtins->builtin(Builtins::kNotifyLazyDeoptimized); | 531 : builtins->builtin(Builtins::kNotifyLazyDeoptimized); |
| 532 output_frame->SetContinuation( | 532 output_frame->SetContinuation( |
| 533 reinterpret_cast<uint32_t>(continuation->entry())); | 533 reinterpret_cast<uint32_t>(continuation->entry())); |
| 534 } | 534 } |
| 535 | |
| 536 if (output_count_ - 1 == frame_index) iterator->Done(); | |
| 537 } | 535 } |
| 538 | 536 |
| 539 | 537 |
| 540 void Deoptimizer::FillInputFrame(Address tos, JavaScriptFrame* frame) { | 538 void Deoptimizer::FillInputFrame(Address tos, JavaScriptFrame* frame) { |
| 541 // Set the register values. The values are not important as there are no | 539 // Set the register values. The values are not important as there are no |
| 542 // callee saved registers in JavaScript frames, so all registers are | 540 // callee saved registers in JavaScript frames, so all registers are |
| 543 // spilled. Registers fp and sp are set to the correct values though. | 541 // spilled. Registers fp and sp are set to the correct values though. |
| 544 | 542 |
| 545 for (int i = 0; i < Register::kNumRegisters; i++) { | 543 for (int i = 0; i < Register::kNumRegisters; i++) { |
| 546 input_->SetRegister(i, i * 4); | 544 input_->SetRegister(i, i * 4); |
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| 764 __ push(ip); | 762 __ push(ip); |
| 765 __ b(&done); | 763 __ b(&done); |
| 766 ASSERT(masm()->pc_offset() - start == table_entry_size_); | 764 ASSERT(masm()->pc_offset() - start == table_entry_size_); |
| 767 } | 765 } |
| 768 __ bind(&done); | 766 __ bind(&done); |
| 769 } | 767 } |
| 770 | 768 |
| 771 #undef __ | 769 #undef __ |
| 772 | 770 |
| 773 } } // namespace v8::internal | 771 } } // namespace v8::internal |
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