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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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2561 // by the vector above. | 2561 // by the vector above. |
2562 CallIC(ic); | 2562 CallIC(ic); |
2563 OperandStackDepthDecrement(arg_count + 1); | 2563 OperandStackDepthDecrement(arg_count + 1); |
2564 | 2564 |
2565 RecordJSReturnSite(expr); | 2565 RecordJSReturnSite(expr); |
2566 // Restore context register. | 2566 // Restore context register. |
2567 __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); | 2567 __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
2568 context()->DropAndPlug(1, v0); | 2568 context()->DropAndPlug(1, v0); |
2569 } | 2569 } |
2570 | 2570 |
2571 | 2571 void FullCodeGenerator::EmitResolvePossiblyDirectEval(Call* expr) { |
2572 void FullCodeGenerator::EmitResolvePossiblyDirectEval(int arg_count) { | 2572 int arg_count = expr->arguments()->length(); |
2573 // t3: copy of the first argument or undefined if it doesn't exist. | 2573 // t4: copy of the first argument or undefined if it doesn't exist. |
2574 if (arg_count > 0) { | 2574 if (arg_count > 0) { |
2575 __ lw(t3, MemOperand(sp, arg_count * kPointerSize)); | 2575 __ lw(t4, MemOperand(sp, arg_count * kPointerSize)); |
2576 } else { | 2576 } else { |
2577 __ LoadRoot(t3, Heap::kUndefinedValueRootIndex); | 2577 __ LoadRoot(t4, Heap::kUndefinedValueRootIndex); |
2578 } | 2578 } |
2579 | 2579 |
2580 // t2: the receiver of the enclosing function. | 2580 // t3: the receiver of the enclosing function. |
2581 __ lw(t2, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); | 2581 __ lw(t3, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
2582 | 2582 |
2583 // t1: the language mode. | 2583 // t2: the language mode. |
2584 __ li(t1, Operand(Smi::FromInt(language_mode()))); | 2584 __ li(t2, Operand(Smi::FromInt(language_mode()))); |
2585 | 2585 |
2586 // t0: the start position of the scope the calls resides in. | 2586 // t1: the start position of the scope the calls resides in. |
2587 __ li(t0, Operand(Smi::FromInt(scope()->start_position()))); | 2587 __ li(t1, Operand(Smi::FromInt(scope()->start_position()))); |
| 2588 |
| 2589 // t0: the source position of the eval call. |
| 2590 __ li(t0, Operand(Smi::FromInt(expr->position()))); |
2588 | 2591 |
2589 // Do the runtime call. | 2592 // Do the runtime call. |
2590 __ Push(t3, t2, t1, t0); | 2593 __ Push(t4, t3, t2, t1, t0); |
2591 __ CallRuntime(Runtime::kResolvePossiblyDirectEval); | 2594 __ CallRuntime(Runtime::kResolvePossiblyDirectEval); |
2592 } | 2595 } |
2593 | 2596 |
2594 | 2597 |
2595 // See http://www.ecma-international.org/ecma-262/6.0/#sec-function-calls. | 2598 // See http://www.ecma-international.org/ecma-262/6.0/#sec-function-calls. |
2596 void FullCodeGenerator::PushCalleeAndWithBaseObject(Call* expr) { | 2599 void FullCodeGenerator::PushCalleeAndWithBaseObject(Call* expr) { |
2597 VariableProxy* callee = expr->expression()->AsVariableProxy(); | 2600 VariableProxy* callee = expr->expression()->AsVariableProxy(); |
2598 if (callee->var()->IsLookupSlot()) { | 2601 if (callee->var()->IsLookupSlot()) { |
2599 Label slow, done; | 2602 Label slow, done; |
2600 | 2603 |
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2629 } else { | 2632 } else { |
2630 VisitForStackValue(callee); | 2633 VisitForStackValue(callee); |
2631 // refEnv.WithBaseObject() | 2634 // refEnv.WithBaseObject() |
2632 __ LoadRoot(a2, Heap::kUndefinedValueRootIndex); | 2635 __ LoadRoot(a2, Heap::kUndefinedValueRootIndex); |
2633 PushOperand(a2); // Reserved receiver slot. | 2636 PushOperand(a2); // Reserved receiver slot. |
2634 } | 2637 } |
2635 } | 2638 } |
2636 | 2639 |
2637 | 2640 |
2638 void FullCodeGenerator::EmitPossiblyEvalCall(Call* expr) { | 2641 void FullCodeGenerator::EmitPossiblyEvalCall(Call* expr) { |
2639 // In a call to eval, we first call RuntimeHidden_ResolvePossiblyDirectEval | 2642 // In a call to eval, we first call Runtime_ResolvePossiblyDirectEval |
2640 // to resolve the function we need to call. Then we call the resolved | 2643 // to resolve the function we need to call. Then we call the resolved |
2641 // function using the given arguments. | 2644 // function using the given arguments. |
2642 ZoneList<Expression*>* args = expr->arguments(); | 2645 ZoneList<Expression*>* args = expr->arguments(); |
2643 int arg_count = args->length(); | 2646 int arg_count = args->length(); |
2644 PushCalleeAndWithBaseObject(expr); | 2647 PushCalleeAndWithBaseObject(expr); |
2645 | 2648 |
2646 // Push the arguments. | 2649 // Push the arguments. |
2647 for (int i = 0; i < arg_count; i++) { | 2650 for (int i = 0; i < arg_count; i++) { |
2648 VisitForStackValue(args->at(i)); | 2651 VisitForStackValue(args->at(i)); |
2649 } | 2652 } |
2650 | 2653 |
2651 // Push a copy of the function (found below the arguments) and | 2654 // Push a copy of the function (found below the arguments) and |
2652 // resolve eval. | 2655 // resolve eval. |
2653 __ lw(a1, MemOperand(sp, (arg_count + 1) * kPointerSize)); | 2656 __ lw(a1, MemOperand(sp, (arg_count + 1) * kPointerSize)); |
2654 __ push(a1); | 2657 __ push(a1); |
2655 EmitResolvePossiblyDirectEval(arg_count); | 2658 EmitResolvePossiblyDirectEval(expr); |
2656 | 2659 |
2657 // Touch up the stack with the resolved function. | 2660 // Touch up the stack with the resolved function. |
2658 __ sw(v0, MemOperand(sp, (arg_count + 1) * kPointerSize)); | 2661 __ sw(v0, MemOperand(sp, (arg_count + 1) * kPointerSize)); |
2659 | 2662 |
2660 PrepareForBailoutForId(expr->EvalId(), NO_REGISTERS); | 2663 PrepareForBailoutForId(expr->EvalId(), NO_REGISTERS); |
2661 // Record source position for debugger. | 2664 // Record source position for debugger. |
2662 SetCallPosition(expr); | 2665 SetCallPosition(expr); |
2663 __ lw(a1, MemOperand(sp, (arg_count + 1) * kPointerSize)); | 2666 __ lw(a1, MemOperand(sp, (arg_count + 1) * kPointerSize)); |
2664 __ li(a0, Operand(arg_count)); | 2667 __ li(a0, Operand(arg_count)); |
2665 __ Call(isolate()->builtins()->Call(ConvertReceiverMode::kAny, | 2668 __ Call(isolate()->builtins()->Call(ConvertReceiverMode::kAny, |
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4010 reinterpret_cast<uint32_t>( | 4013 reinterpret_cast<uint32_t>( |
4011 isolate->builtins()->OnStackReplacement()->entry())); | 4014 isolate->builtins()->OnStackReplacement()->entry())); |
4012 return ON_STACK_REPLACEMENT; | 4015 return ON_STACK_REPLACEMENT; |
4013 } | 4016 } |
4014 | 4017 |
4015 | 4018 |
4016 } // namespace internal | 4019 } // namespace internal |
4017 } // namespace v8 | 4020 } // namespace v8 |
4018 | 4021 |
4019 #endif // V8_TARGET_ARCH_MIPS | 4022 #endif // V8_TARGET_ARCH_MIPS |
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