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Side by Side Diff: src/full-codegen/mips/full-codegen-mips.cc

Issue 1359583002: [builtins] Add support for NewTarget to Execution::New. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: REBASE. Merge mips and mips64 ports. Created 5 years, 3 months ago
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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_MIPS 5 #if V8_TARGET_ARCH_MIPS
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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4029 4029
4030 4030
4031 void FullCodeGenerator::EmitDefaultConstructorCallSuper(CallRuntime* expr) { 4031 void FullCodeGenerator::EmitDefaultConstructorCallSuper(CallRuntime* expr) {
4032 ZoneList<Expression*>* args = expr->arguments(); 4032 ZoneList<Expression*>* args = expr->arguments();
4033 DCHECK(args->length() == 2); 4033 DCHECK(args->length() == 2);
4034 4034
4035 // Evaluate new.target and super constructor. 4035 // Evaluate new.target and super constructor.
4036 VisitForStackValue(args->at(0)); 4036 VisitForStackValue(args->at(0));
4037 VisitForStackValue(args->at(1)); 4037 VisitForStackValue(args->at(1));
4038 4038
4039 // Load original constructor into t0. 4039 // Load original constructor into a3.
4040 __ lw(t0, MemOperand(sp, 1 * kPointerSize)); 4040 __ lw(a3, MemOperand(sp, 1 * kPointerSize));
4041 4041
4042 // Check if the calling frame is an arguments adaptor frame. 4042 // Check if the calling frame is an arguments adaptor frame.
4043 Label adaptor_frame, args_set_up, runtime; 4043 Label adaptor_frame, args_set_up, runtime;
4044 __ lw(a2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); 4044 __ lw(a2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset));
4045 __ lw(a3, MemOperand(a2, StandardFrameConstants::kContextOffset)); 4045 __ lw(t0, MemOperand(a2, StandardFrameConstants::kContextOffset));
4046 __ Branch(&adaptor_frame, eq, a3, 4046 __ Branch(&adaptor_frame, eq, t0,
4047 Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); 4047 Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)));
4048 // default constructor has no arguments, so no adaptor frame means no args. 4048 // default constructor has no arguments, so no adaptor frame means no args.
4049 __ mov(a0, zero_reg); 4049 __ mov(a0, zero_reg);
4050 __ Branch(&args_set_up); 4050 __ Branch(&args_set_up);
4051 4051
4052 // Copy arguments from adaptor frame. 4052 // Copy arguments from adaptor frame.
4053 { 4053 {
4054 __ bind(&adaptor_frame); 4054 __ bind(&adaptor_frame);
4055 __ lw(a1, MemOperand(a2, ArgumentsAdaptorFrameConstants::kLengthOffset)); 4055 __ lw(a1, MemOperand(a2, ArgumentsAdaptorFrameConstants::kLengthOffset));
4056 __ SmiUntag(a1, a1); 4056 __ SmiUntag(a1, a1);
4057 4057
4058 __ mov(a0, a1); 4058 __ mov(a0, a1);
4059 4059
4060 // Get arguments pointer in a2. 4060 // Get arguments pointer in a2.
4061 __ sll(at, a1, kPointerSizeLog2); 4061 __ sll(at, a1, kPointerSizeLog2);
4062 __ addu(a2, a2, at); 4062 __ addu(a2, a2, at);
4063 __ Addu(a2, a2, Operand(StandardFrameConstants::kCallerSPOffset)); 4063 __ Addu(a2, a2, Operand(StandardFrameConstants::kCallerSPOffset));
4064 Label loop; 4064 Label loop;
4065 __ bind(&loop); 4065 __ bind(&loop);
4066 // Pre-decrement a2 with kPointerSize on each iteration. 4066 // Pre-decrement a2 with kPointerSize on each iteration.
4067 // Pre-decrement in order to skip receiver. 4067 // Pre-decrement in order to skip receiver.
4068 __ Addu(a2, a2, Operand(-kPointerSize)); 4068 __ Addu(a2, a2, Operand(-kPointerSize));
4069 __ lw(a3, MemOperand(a2)); 4069 __ lw(t0, MemOperand(a2));
4070 __ Push(a3); 4070 __ Push(t0);
4071 __ Addu(a1, a1, Operand(-1)); 4071 __ Addu(a1, a1, Operand(-1));
4072 __ Branch(&loop, ne, a1, Operand(zero_reg)); 4072 __ Branch(&loop, ne, a1, Operand(zero_reg));
4073 } 4073 }
4074 4074
4075 __ bind(&args_set_up); 4075 __ bind(&args_set_up);
4076 __ sll(at, a0, kPointerSizeLog2); 4076 __ sll(at, a0, kPointerSizeLog2);
4077 __ Addu(at, at, Operand(sp)); 4077 __ Addu(at, at, Operand(sp));
4078 __ lw(a1, MemOperand(at, 0)); 4078 __ lw(a1, MemOperand(at, 0));
4079 __ LoadRoot(a2, Heap::kUndefinedValueRootIndex); 4079 __ Call(isolate()->builtins()->Construct(), RelocInfo::CONSTRUCT_CALL);
4080
4081 CallConstructStub stub(isolate(), SUPER_CONSTRUCTOR_CALL);
4082 __ Call(stub.GetCode(), RelocInfo::CONSTRUCT_CALL);
4083 4080
4084 // Restore context register. 4081 // Restore context register.
4085 __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); 4082 __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset));
4086 4083
4087 context()->DropAndPlug(1, result_register()); 4084 context()->DropAndPlug(1, result_register());
4088 } 4085 }
4089 4086
4090 4087
4091 void FullCodeGenerator::EmitRegExpConstructResult(CallRuntime* expr) { 4088 void FullCodeGenerator::EmitRegExpConstructResult(CallRuntime* expr) {
4092 RegExpConstructResultStub stub(isolate()); 4089 RegExpConstructResultStub stub(isolate());
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5233 reinterpret_cast<uint32_t>( 5230 reinterpret_cast<uint32_t>(
5234 isolate->builtins()->OsrAfterStackCheck()->entry())); 5231 isolate->builtins()->OsrAfterStackCheck()->entry()));
5235 return OSR_AFTER_STACK_CHECK; 5232 return OSR_AFTER_STACK_CHECK;
5236 } 5233 }
5237 5234
5238 5235
5239 } // namespace internal 5236 } // namespace internal
5240 } // namespace v8 5237 } // namespace v8
5241 5238
5242 #endif // V8_TARGET_ARCH_MIPS 5239 #endif // V8_TARGET_ARCH_MIPS
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