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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 #if V8_TARGET_ARCH_X87 | 5 #if V8_TARGET_ARCH_X87 |
| 6 | 6 |
| 7 #include "src/codegen.h" | 7 #include "src/codegen.h" |
| 8 #include "src/deoptimizer.h" | 8 #include "src/deoptimizer.h" |
| 9 #include "src/full-codegen/full-codegen.h" | 9 #include "src/full-codegen/full-codegen.h" |
| 10 #include "src/register-configuration.h" | 10 #include "src/register-configuration.h" |
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| 162 | 162 |
| 163 // Right trim the relocation info to free up remaining space. | 163 // Right trim the relocation info to free up remaining space. |
| 164 const int delta = reloc_info->length() - new_reloc_length; | 164 const int delta = reloc_info->length() - new_reloc_length; |
| 165 if (delta > 0) { | 165 if (delta > 0) { |
| 166 isolate->heap()->RightTrimFixedArray<Heap::SEQUENTIAL_TO_SWEEPER>( | 166 isolate->heap()->RightTrimFixedArray<Heap::SEQUENTIAL_TO_SWEEPER>( |
| 167 reloc_info, delta); | 167 reloc_info, delta); |
| 168 } | 168 } |
| 169 } | 169 } |
| 170 | 170 |
| 171 | 171 |
| 172 void Deoptimizer::FillInputFrame(Address tos, JavaScriptFrame* frame) { | |
| 173 // Set the register values. The values are not important as there are no | |
| 174 // callee saved registers in JavaScript frames, so all registers are | |
| 175 // spilled. Registers ebp and esp are set to the correct values though. | |
| 176 | |
| 177 for (int i = 0; i < Register::kNumRegisters; i++) { | |
| 178 input_->SetRegister(i, i * 4); | |
| 179 } | |
| 180 input_->SetRegister(esp.code(), reinterpret_cast<intptr_t>(frame->sp())); | |
| 181 input_->SetRegister(ebp.code(), reinterpret_cast<intptr_t>(frame->fp())); | |
| 182 for (int i = 0; i < X87Register::kMaxNumRegisters; i++) { | |
| 183 input_->SetDoubleRegister(i, 0.0); | |
| 184 } | |
| 185 | |
| 186 // Fill the frame content from the actual data on the frame. | |
| 187 for (unsigned i = 0; i < input_->GetFrameSize(); i += kPointerSize) { | |
| 188 input_->SetFrameSlot(i, Memory::uint32_at(tos + i)); | |
| 189 } | |
| 190 } | |
| 191 | |
| 192 | |
| 193 void Deoptimizer::SetPlatformCompiledStubRegisters( | 172 void Deoptimizer::SetPlatformCompiledStubRegisters( |
| 194 FrameDescription* output_frame, CodeStubDescriptor* descriptor) { | 173 FrameDescription* output_frame, CodeStubDescriptor* descriptor) { |
| 195 intptr_t handler = | 174 intptr_t handler = |
| 196 reinterpret_cast<intptr_t>(descriptor->deoptimization_handler()); | 175 reinterpret_cast<intptr_t>(descriptor->deoptimization_handler()); |
| 197 int params = descriptor->GetHandlerParameterCount(); | 176 int params = descriptor->GetHandlerParameterCount(); |
| 198 output_frame->SetRegister(eax.code(), params); | 177 output_frame->SetRegister(eax.code(), params); |
| 199 output_frame->SetRegister(ebx.code(), handler); | 178 output_frame->SetRegister(ebx.code(), handler); |
| 200 } | 179 } |
| 201 | 180 |
| 202 | 181 |
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| 464 } | 443 } |
| 465 | 444 |
| 466 | 445 |
| 467 #undef __ | 446 #undef __ |
| 468 | 447 |
| 469 | 448 |
| 470 } // namespace internal | 449 } // namespace internal |
| 471 } // namespace v8 | 450 } // namespace v8 |
| 472 | 451 |
| 473 #endif // V8_TARGET_ARCH_X87 | 452 #endif // V8_TARGET_ARCH_X87 |
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