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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/v8.h" | 5 #include "src/v8.h" |
6 | 6 |
7 #if V8_TARGET_ARCH_IA32 | 7 #if V8_TARGET_ARCH_IA32 |
8 | 8 |
9 #include "src/code-factory.h" | 9 #include "src/code-factory.h" |
10 #include "src/code-stubs.h" | 10 #include "src/code-stubs.h" |
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131 __ bind(&ok); | 131 __ bind(&ok); |
132 } | 132 } |
133 | 133 |
134 // Open a frame scope to indicate that there is a frame on the stack. The | 134 // Open a frame scope to indicate that there is a frame on the stack. The |
135 // MANUAL indicates that the scope shouldn't actually generate code to set up | 135 // MANUAL indicates that the scope shouldn't actually generate code to set up |
136 // the frame (that is done below). | 136 // the frame (that is done below). |
137 FrameScope frame_scope(masm_, StackFrame::MANUAL); | 137 FrameScope frame_scope(masm_, StackFrame::MANUAL); |
138 | 138 |
139 info->set_prologue_offset(masm_->pc_offset()); | 139 info->set_prologue_offset(masm_->pc_offset()); |
140 __ Prologue(info->IsCodePreAgingActive()); | 140 __ Prologue(info->IsCodePreAgingActive()); |
| 141 __ push(Immediate(FeedbackVector())); |
141 info->AddNoFrameRange(0, masm_->pc_offset()); | 142 info->AddNoFrameRange(0, masm_->pc_offset()); |
142 | 143 |
143 { Comment cmnt(masm_, "[ Allocate locals"); | 144 { Comment cmnt(masm_, "[ Allocate locals"); |
144 int locals_count = info->scope()->num_stack_slots(); | 145 int locals_count = info->scope()->num_stack_slots(); |
145 // Generators allocate locals, if any, in context slots. | 146 // Generators allocate locals, if any, in context slots. |
146 DCHECK(!IsGeneratorFunction(info->function()->kind()) || locals_count == 0); | 147 DCHECK(!IsGeneratorFunction(info->function()->kind()) || locals_count == 0); |
147 if (locals_count == 1) { | 148 if (locals_count == 1) { |
148 __ push(Immediate(isolate()->factory()->undefined_value())); | 149 __ push(Immediate(isolate()->factory()->undefined_value())); |
149 } else if (locals_count > 1) { | 150 } else if (locals_count > 1) { |
150 if (locals_count >= 128) { | 151 if (locals_count >= 128) { |
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2061 | 2062 |
2062 __ bind(&suspend); | 2063 __ bind(&suspend); |
2063 VisitForAccumulatorValue(expr->generator_object()); | 2064 VisitForAccumulatorValue(expr->generator_object()); |
2064 DCHECK(continuation.pos() > 0 && Smi::IsValid(continuation.pos())); | 2065 DCHECK(continuation.pos() > 0 && Smi::IsValid(continuation.pos())); |
2065 __ mov(FieldOperand(eax, JSGeneratorObject::kContinuationOffset), | 2066 __ mov(FieldOperand(eax, JSGeneratorObject::kContinuationOffset), |
2066 Immediate(Smi::FromInt(continuation.pos()))); | 2067 Immediate(Smi::FromInt(continuation.pos()))); |
2067 __ mov(FieldOperand(eax, JSGeneratorObject::kContextOffset), esi); | 2068 __ mov(FieldOperand(eax, JSGeneratorObject::kContextOffset), esi); |
2068 __ mov(ecx, esi); | 2069 __ mov(ecx, esi); |
2069 __ RecordWriteField(eax, JSGeneratorObject::kContextOffset, ecx, edx, | 2070 __ RecordWriteField(eax, JSGeneratorObject::kContextOffset, ecx, edx, |
2070 kDontSaveFPRegs); | 2071 kDontSaveFPRegs); |
2071 __ lea(ebx, Operand(ebp, StandardFrameConstants::kExpressionsOffset)); | 2072 __ lea(ebx, Operand(ebp, JavaScriptFrameConstants::kLocal0Offset)); |
2072 __ cmp(esp, ebx); | 2073 __ cmp(esp, ebx); |
2073 __ j(equal, &post_runtime); | 2074 __ j(equal, &post_runtime); |
2074 __ push(eax); // generator object | 2075 __ push(eax); // generator object |
2075 __ CallRuntime(Runtime::kSuspendJSGeneratorObject, 1); | 2076 __ CallRuntime(Runtime::kSuspendJSGeneratorObject, 1); |
2076 __ mov(context_register(), | 2077 __ mov(context_register(), |
2077 Operand(ebp, StandardFrameConstants::kContextOffset)); | 2078 Operand(ebp, StandardFrameConstants::kContextOffset)); |
2078 __ bind(&post_runtime); | 2079 __ bind(&post_runtime); |
2079 __ pop(result_register()); | 2080 __ pop(result_register()); |
2080 EmitReturnSequence(); | 2081 EmitReturnSequence(); |
2081 | 2082 |
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2243 Label resume_frame, done; | 2244 Label resume_frame, done; |
2244 __ bind(&push_frame); | 2245 __ bind(&push_frame); |
2245 __ call(&resume_frame); | 2246 __ call(&resume_frame); |
2246 __ jmp(&done); | 2247 __ jmp(&done); |
2247 __ bind(&resume_frame); | 2248 __ bind(&resume_frame); |
2248 __ push(ebp); // Caller's frame pointer. | 2249 __ push(ebp); // Caller's frame pointer. |
2249 __ mov(ebp, esp); | 2250 __ mov(ebp, esp); |
2250 __ push(esi); // Callee's context. | 2251 __ push(esi); // Callee's context. |
2251 __ push(edi); // Callee's JS Function. | 2252 __ push(edi); // Callee's JS Function. |
2252 | 2253 |
| 2254 // Callee's type feedback vector. |
| 2255 __ mov(edx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset)); |
| 2256 __ mov(edx, FieldOperand(edx, SharedFunctionInfo::kFeedbackVectorOffset)); |
| 2257 __ push(edx); |
| 2258 |
2253 // Load the operand stack size. | 2259 // Load the operand stack size. |
2254 __ mov(edx, FieldOperand(ebx, JSGeneratorObject::kOperandStackOffset)); | 2260 __ mov(edx, FieldOperand(ebx, JSGeneratorObject::kOperandStackOffset)); |
2255 __ mov(edx, FieldOperand(edx, FixedArray::kLengthOffset)); | 2261 __ mov(edx, FieldOperand(edx, FixedArray::kLengthOffset)); |
2256 __ SmiUntag(edx); | 2262 __ SmiUntag(edx); |
2257 | 2263 |
2258 // If we are sending a value and there is no operand stack, we can jump back | 2264 // If we are sending a value and there is no operand stack, we can jump back |
2259 // in directly. | 2265 // in directly. |
2260 if (resume_mode == JSGeneratorObject::NEXT) { | 2266 if (resume_mode == JSGeneratorObject::NEXT) { |
2261 Label slow_resume; | 2267 Label slow_resume; |
2262 __ cmp(edx, Immediate(0)); | 2268 __ cmp(edx, Immediate(0)); |
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5366 DCHECK_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(), | 5372 DCHECK_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(), |
5367 Assembler::target_address_at(call_target_address, | 5373 Assembler::target_address_at(call_target_address, |
5368 unoptimized_code)); | 5374 unoptimized_code)); |
5369 return OSR_AFTER_STACK_CHECK; | 5375 return OSR_AFTER_STACK_CHECK; |
5370 } | 5376 } |
5371 | 5377 |
5372 | 5378 |
5373 } } // namespace v8::internal | 5379 } } // namespace v8::internal |
5374 | 5380 |
5375 #endif // V8_TARGET_ARCH_IA32 | 5381 #endif // V8_TARGET_ARCH_IA32 |
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