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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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