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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_MIPS64 | 5 #if V8_TARGET_ARCH_MIPS64 |
| 6 | 6 |
| 7 // Note on Mips implementation: | 7 // Note on Mips implementation: |
| 8 // | 8 // |
| 9 // The result_register() for mips is the 'v0' register, which is defined | 9 // The result_register() for mips is the 'v0' register, which is defined |
| 10 // by the ABI to contain function return values. However, the first | 10 // by the ABI to contain function return values. However, the first |
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| 4032 | 4032 |
| 4033 | 4033 |
| 4034 void FullCodeGenerator::EmitDefaultConstructorCallSuper(CallRuntime* expr) { | 4034 void FullCodeGenerator::EmitDefaultConstructorCallSuper(CallRuntime* expr) { |
| 4035 ZoneList<Expression*>* args = expr->arguments(); | 4035 ZoneList<Expression*>* args = expr->arguments(); |
| 4036 DCHECK(args->length() == 2); | 4036 DCHECK(args->length() == 2); |
| 4037 | 4037 |
| 4038 // Evaluate new.target and super constructor. | 4038 // Evaluate new.target and super constructor. |
| 4039 VisitForStackValue(args->at(0)); | 4039 VisitForStackValue(args->at(0)); |
| 4040 VisitForStackValue(args->at(1)); | 4040 VisitForStackValue(args->at(1)); |
| 4041 | 4041 |
| 4042 // Load original constructor into a4. | 4042 // Load original constructor into a3. |
| 4043 __ ld(a4, MemOperand(sp, 1 * kPointerSize)); | 4043 __ ld(a3, MemOperand(sp, 1 * kPointerSize)); |
| 4044 | 4044 |
| 4045 // Check if the calling frame is an arguments adaptor frame. | 4045 // Check if the calling frame is an arguments adaptor frame. |
| 4046 Label adaptor_frame, args_set_up, runtime; | 4046 Label adaptor_frame, args_set_up, runtime; |
| 4047 __ ld(a2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); | 4047 __ ld(a2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 4048 __ ld(a3, MemOperand(a2, StandardFrameConstants::kContextOffset)); | 4048 __ ld(a4, MemOperand(a2, StandardFrameConstants::kContextOffset)); |
| 4049 __ Branch(&adaptor_frame, eq, a3, | 4049 __ Branch(&adaptor_frame, eq, a4, |
| 4050 Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); | 4050 Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
| 4051 // default constructor has no arguments, so no adaptor frame means no args. | 4051 // default constructor has no arguments, so no adaptor frame means no args. |
| 4052 __ mov(a0, zero_reg); | 4052 __ mov(a0, zero_reg); |
| 4053 __ Branch(&args_set_up); | 4053 __ Branch(&args_set_up); |
| 4054 | 4054 |
| 4055 // Copy arguments from adaptor frame. | 4055 // Copy arguments from adaptor frame. |
| 4056 { | 4056 { |
| 4057 __ bind(&adaptor_frame); | 4057 __ bind(&adaptor_frame); |
| 4058 __ ld(a1, MemOperand(a2, ArgumentsAdaptorFrameConstants::kLengthOffset)); | 4058 __ ld(a1, MemOperand(a2, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 4059 __ SmiUntag(a1, a1); | 4059 __ SmiUntag(a1, a1); |
| 4060 | 4060 |
| 4061 __ mov(a0, a1); | 4061 __ mov(a0, a1); |
| 4062 | 4062 |
| 4063 // Get arguments pointer in a2. | 4063 // Get arguments pointer in a2. |
| 4064 __ dsll(at, a1, kPointerSizeLog2); | 4064 __ dsll(at, a1, kPointerSizeLog2); |
| 4065 __ Daddu(a2, a2, Operand(at)); | 4065 __ Daddu(a2, a2, Operand(at)); |
| 4066 __ Daddu(a2, a2, Operand(StandardFrameConstants::kCallerSPOffset)); | 4066 __ Daddu(a2, a2, Operand(StandardFrameConstants::kCallerSPOffset)); |
| 4067 Label loop; | 4067 Label loop; |
| 4068 __ bind(&loop); | 4068 __ bind(&loop); |
| 4069 // Pre-decrement a2 with kPointerSize on each iteration. | 4069 // Pre-decrement a2 with kPointerSize on each iteration. |
| 4070 // Pre-decrement in order to skip receiver. | 4070 // Pre-decrement in order to skip receiver. |
| 4071 __ Daddu(a2, a2, Operand(-kPointerSize)); | 4071 __ Daddu(a2, a2, Operand(-kPointerSize)); |
| 4072 __ ld(a3, MemOperand(a2)); | 4072 __ ld(a4, MemOperand(a2)); |
| 4073 __ Push(a3); | 4073 __ Push(a4); |
| 4074 __ Daddu(a1, a1, Operand(-1)); | 4074 __ Daddu(a1, a1, Operand(-1)); |
| 4075 __ Branch(&loop, ne, a1, Operand(zero_reg)); | 4075 __ Branch(&loop, ne, a1, Operand(zero_reg)); |
| 4076 } | 4076 } |
| 4077 | 4077 |
| 4078 __ bind(&args_set_up); | 4078 __ bind(&args_set_up); |
| 4079 __ dsll(at, a0, kPointerSizeLog2); | 4079 __ dsll(at, a0, kPointerSizeLog2); |
| 4080 __ Daddu(at, at, Operand(sp)); | 4080 __ Daddu(at, at, Operand(sp)); |
| 4081 __ ld(a1, MemOperand(at, 0)); | 4081 __ ld(a1, MemOperand(at, 0)); |
| 4082 __ LoadRoot(a2, Heap::kUndefinedValueRootIndex); | 4082 __ Call(isolate()->builtins()->Construct(), RelocInfo::CONSTRUCT_CALL); |
| 4083 | |
| 4084 CallConstructStub stub(isolate(), SUPER_CONSTRUCTOR_CALL); | |
| 4085 __ Call(stub.GetCode(), RelocInfo::CONSTRUCT_CALL); | |
| 4086 | 4083 |
| 4087 // Restore context register. | 4084 // Restore context register. |
| 4088 __ ld(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); | 4085 __ ld(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 4089 | 4086 |
| 4090 context()->DropAndPlug(1, result_register()); | 4087 context()->DropAndPlug(1, result_register()); |
| 4091 } | 4088 } |
| 4092 | 4089 |
| 4093 | 4090 |
| 4094 void FullCodeGenerator::EmitRegExpConstructResult(CallRuntime* expr) { | 4091 void FullCodeGenerator::EmitRegExpConstructResult(CallRuntime* expr) { |
| 4095 RegExpConstructResultStub stub(isolate()); | 4092 RegExpConstructResultStub stub(isolate()); |
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| 5239 reinterpret_cast<uint64_t>( | 5236 reinterpret_cast<uint64_t>( |
| 5240 isolate->builtins()->OsrAfterStackCheck()->entry())); | 5237 isolate->builtins()->OsrAfterStackCheck()->entry())); |
| 5241 return OSR_AFTER_STACK_CHECK; | 5238 return OSR_AFTER_STACK_CHECK; |
| 5242 } | 5239 } |
| 5243 | 5240 |
| 5244 | 5241 |
| 5245 } // namespace internal | 5242 } // namespace internal |
| 5246 } // namespace v8 | 5243 } // namespace v8 |
| 5247 | 5244 |
| 5248 #endif // V8_TARGET_ARCH_MIPS64 | 5245 #endif // V8_TARGET_ARCH_MIPS64 |
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