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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 #include "src/codegen.h" | 5 #include "src/codegen.h" |
6 #include "src/deoptimizer.h" | 6 #include "src/deoptimizer.h" |
7 #include "src/full-codegen/full-codegen.h" | 7 #include "src/full-codegen/full-codegen.h" |
8 #include "src/register-configuration.h" | 8 #include "src/register-configuration.h" |
9 #include "src/safepoint-table.h" | 9 #include "src/safepoint-table.h" |
10 | 10 |
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78 DCHECK(prev_call_address == NULL || | 78 DCHECK(prev_call_address == NULL || |
79 call_address >= prev_call_address + patch_size()); | 79 call_address >= prev_call_address + patch_size()); |
80 DCHECK(call_address + patch_size() <= code->instruction_end()); | 80 DCHECK(call_address + patch_size() <= code->instruction_end()); |
81 #ifdef DEBUG | 81 #ifdef DEBUG |
82 prev_call_address = call_address; | 82 prev_call_address = call_address; |
83 #endif | 83 #endif |
84 } | 84 } |
85 } | 85 } |
86 | 86 |
87 | 87 |
88 void Deoptimizer::FillInputFrame(Address tos, JavaScriptFrame* frame) { | |
89 // Set the register values. The values are not important as there are no | |
90 // callee saved registers in JavaScript frames, so all registers are | |
91 // spilled. Registers fp and sp are set to the correct values though. | |
92 | |
93 for (int i = 0; i < Register::kNumRegisters; i++) { | |
94 input_->SetRegister(i, i * 4); | |
95 } | |
96 input_->SetRegister(sp.code(), reinterpret_cast<intptr_t>(frame->sp())); | |
97 input_->SetRegister(fp.code(), reinterpret_cast<intptr_t>(frame->fp())); | |
98 for (int i = 0; i < DoubleRegister::kMaxNumRegisters; i++) { | |
99 input_->SetDoubleRegister(i, 0.0); | |
100 } | |
101 | |
102 // Fill the frame content from the actual data on the frame. | |
103 for (unsigned i = 0; i < input_->GetFrameSize(); i += kPointerSize) { | |
104 input_->SetFrameSlot(i, Memory::uint32_at(tos + i)); | |
105 } | |
106 } | |
107 | |
108 | |
109 void Deoptimizer::SetPlatformCompiledStubRegisters( | 88 void Deoptimizer::SetPlatformCompiledStubRegisters( |
110 FrameDescription* output_frame, CodeStubDescriptor* descriptor) { | 89 FrameDescription* output_frame, CodeStubDescriptor* descriptor) { |
111 ApiFunction function(descriptor->deoptimization_handler()); | 90 ApiFunction function(descriptor->deoptimization_handler()); |
112 ExternalReference xref(&function, ExternalReference::BUILTIN_CALL, isolate_); | 91 ExternalReference xref(&function, ExternalReference::BUILTIN_CALL, isolate_); |
113 intptr_t handler = reinterpret_cast<intptr_t>(xref.address()); | 92 intptr_t handler = reinterpret_cast<intptr_t>(xref.address()); |
114 int params = descriptor->GetHandlerParameterCount(); | 93 int params = descriptor->GetHandlerParameterCount(); |
115 output_frame->SetRegister(r0.code(), params); | 94 output_frame->SetRegister(r0.code(), params); |
116 output_frame->SetRegister(r1.code(), handler); | 95 output_frame->SetRegister(r1.code(), handler); |
117 } | 96 } |
118 | 97 |
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356 void FrameDescription::SetCallerConstantPool(unsigned offset, intptr_t value) { | 335 void FrameDescription::SetCallerConstantPool(unsigned offset, intptr_t value) { |
357 DCHECK(FLAG_enable_embedded_constant_pool); | 336 DCHECK(FLAG_enable_embedded_constant_pool); |
358 SetFrameSlot(offset, value); | 337 SetFrameSlot(offset, value); |
359 } | 338 } |
360 | 339 |
361 | 340 |
362 #undef __ | 341 #undef __ |
363 | 342 |
364 } // namespace internal | 343 } // namespace internal |
365 } // namespace v8 | 344 } // namespace v8 |
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