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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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_ARM64 | 7 #if V8_TARGET_ARCH_ARM64 |
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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2822 __ JumpIfRoot(x1, Heap::kTheHoleValueRootIndex, &uninitialized_this); | 2822 __ JumpIfRoot(x1, Heap::kTheHoleValueRootIndex, &uninitialized_this); |
2823 __ Mov(x0, Operand(this_var->name())); | 2823 __ Mov(x0, Operand(this_var->name())); |
2824 __ Push(x0); | 2824 __ Push(x0); |
2825 __ CallRuntime(Runtime::kThrowReferenceError, 1); | 2825 __ CallRuntime(Runtime::kThrowReferenceError, 1); |
2826 __ bind(&uninitialized_this); | 2826 __ bind(&uninitialized_this); |
2827 | 2827 |
2828 EmitVariableAssignment(this_var, Token::INIT_CONST, slot); | 2828 EmitVariableAssignment(this_var, Token::INIT_CONST, slot); |
2829 } | 2829 } |
2830 | 2830 |
2831 | 2831 |
| 2832 // See http://www.ecma-international.org/ecma-262/6.0/#sec-function-calls. |
| 2833 void FullCodeGenerator::PushCalleeAndWithBaseObject(Call* expr) { |
| 2834 VariableProxy* callee = expr->expression()->AsVariableProxy(); |
| 2835 if (callee->var()->IsLookupSlot()) { |
| 2836 Label slow, done; |
| 2837 |
| 2838 { |
| 2839 PreservePositionScope scope(masm()->positions_recorder()); |
| 2840 // Generate code for loading from variables potentially shadowed |
| 2841 // by eval-introduced variables. |
| 2842 EmitDynamicLookupFastCase(callee, NOT_INSIDE_TYPEOF, &slow, &done); |
| 2843 } |
| 2844 |
| 2845 __ Bind(&slow); |
| 2846 // Call the runtime to find the function to call (returned in x0) |
| 2847 // and the object holding it (returned in x1). |
| 2848 __ Mov(x10, Operand(callee->name())); |
| 2849 __ Push(context_register(), x10); |
| 2850 __ CallRuntime(Runtime::kLoadLookupSlot, 2); |
| 2851 __ Push(x0, x1); // Receiver, function. |
| 2852 PrepareForBailoutForId(expr->LookupId(), NO_REGISTERS); |
| 2853 |
| 2854 // If fast case code has been generated, emit code to push the |
| 2855 // function and receiver and have the slow path jump around this |
| 2856 // code. |
| 2857 if (done.is_linked()) { |
| 2858 Label call; |
| 2859 __ B(&call); |
| 2860 __ Bind(&done); |
| 2861 // Push function. |
| 2862 // The receiver is implicitly the global receiver. Indicate this |
| 2863 // by passing the undefined to the call function stub. |
| 2864 __ LoadRoot(x1, Heap::kUndefinedValueRootIndex); |
| 2865 __ Push(x0, x1); |
| 2866 __ Bind(&call); |
| 2867 } |
| 2868 } else { |
| 2869 VisitForStackValue(callee); |
| 2870 // refEnv.WithBaseObject() |
| 2871 __ LoadRoot(x10, Heap::kUndefinedValueRootIndex); |
| 2872 __ Push(x10); // Reserved receiver slot. |
| 2873 } |
| 2874 } |
| 2875 |
| 2876 |
2832 void FullCodeGenerator::VisitCall(Call* expr) { | 2877 void FullCodeGenerator::VisitCall(Call* expr) { |
2833 #ifdef DEBUG | 2878 #ifdef DEBUG |
2834 // We want to verify that RecordJSReturnSite gets called on all paths | 2879 // We want to verify that RecordJSReturnSite gets called on all paths |
2835 // through this function. Avoid early returns. | 2880 // through this function. Avoid early returns. |
2836 expr->return_is_recorded_ = false; | 2881 expr->return_is_recorded_ = false; |
2837 #endif | 2882 #endif |
2838 | 2883 |
2839 Comment cmnt(masm_, "[ Call"); | 2884 Comment cmnt(masm_, "[ Call"); |
2840 Expression* callee = expr->expression(); | 2885 Expression* callee = expr->expression(); |
2841 Call::CallType call_type = expr->GetCallType(isolate()); | 2886 Call::CallType call_type = expr->GetCallType(isolate()); |
2842 | 2887 |
2843 if (call_type == Call::POSSIBLY_EVAL_CALL) { | 2888 if (call_type == Call::POSSIBLY_EVAL_CALL) { |
2844 // In a call to eval, we first call RuntimeHidden_ResolvePossiblyDirectEval | 2889 // In a call to eval, we first call RuntimeHidden_ResolvePossiblyDirectEval |
2845 // to resolve the function we need to call. Then we call the resolved | 2890 // to resolve the function we need to call. Then we call the resolved |
2846 // function using the given arguments. | 2891 // function using the given arguments. |
2847 ZoneList<Expression*>* args = expr->arguments(); | 2892 ZoneList<Expression*>* args = expr->arguments(); |
2848 int arg_count = args->length(); | 2893 int arg_count = args->length(); |
2849 | 2894 |
2850 { | 2895 { |
2851 PreservePositionScope pos_scope(masm()->positions_recorder()); | 2896 PreservePositionScope pos_scope(masm()->positions_recorder()); |
2852 VisitForStackValue(callee); | 2897 PushCalleeAndWithBaseObject(expr); |
2853 __ LoadRoot(x10, Heap::kUndefinedValueRootIndex); | |
2854 __ Push(x10); // Reserved receiver slot. | |
2855 | 2898 |
2856 // Push the arguments. | 2899 // Push the arguments. |
2857 for (int i = 0; i < arg_count; i++) { | 2900 for (int i = 0; i < arg_count; i++) { |
2858 VisitForStackValue(args->at(i)); | 2901 VisitForStackValue(args->at(i)); |
2859 } | 2902 } |
2860 | 2903 |
2861 // Push a copy of the function (found below the arguments) and | 2904 // Push a copy of the function (found below the arguments) and |
2862 // resolve eval. | 2905 // resolve eval. |
2863 __ Peek(x10, (arg_count + 1) * kPointerSize); | 2906 __ Peek(x10, (arg_count + 1) * kPointerSize); |
2864 __ Push(x10); | 2907 __ Push(x10); |
2865 EmitResolvePossiblyDirectEval(arg_count); | 2908 EmitResolvePossiblyDirectEval(arg_count); |
2866 | 2909 |
2867 // Touch up the stack with the resolved function. | 2910 // Touch up the stack with the resolved function. |
2868 __ Poke(x0, (arg_count + 1) * kPointerSize); | 2911 __ Poke(x0, (arg_count + 1) * kPointerSize); |
2869 | 2912 |
2870 PrepareForBailoutForId(expr->EvalOrLookupId(), NO_REGISTERS); | 2913 PrepareForBailoutForId(expr->EvalId(), NO_REGISTERS); |
2871 } | 2914 } |
2872 | 2915 |
2873 // Record source position for debugger. | 2916 // Record source position for debugger. |
2874 SetSourcePosition(expr->position()); | 2917 SetSourcePosition(expr->position()); |
2875 | 2918 |
2876 // Call the evaluated function. | 2919 // Call the evaluated function. |
2877 CallFunctionStub stub(isolate(), arg_count, NO_CALL_FUNCTION_FLAGS); | 2920 CallFunctionStub stub(isolate(), arg_count, NO_CALL_FUNCTION_FLAGS); |
2878 __ Peek(x1, (arg_count + 1) * kXRegSize); | 2921 __ Peek(x1, (arg_count + 1) * kXRegSize); |
2879 __ CallStub(&stub); | 2922 __ CallStub(&stub); |
2880 RecordJSReturnSite(expr); | 2923 RecordJSReturnSite(expr); |
2881 // Restore context register. | 2924 // Restore context register. |
2882 __ Ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); | 2925 __ Ldr(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
2883 context()->DropAndPlug(1, x0); | 2926 context()->DropAndPlug(1, x0); |
2884 | 2927 |
2885 } else if (call_type == Call::GLOBAL_CALL) { | 2928 } else if (call_type == Call::GLOBAL_CALL) { |
2886 EmitCallWithLoadIC(expr); | 2929 EmitCallWithLoadIC(expr); |
2887 | 2930 |
2888 } else if (call_type == Call::LOOKUP_SLOT_CALL) { | 2931 } else if (call_type == Call::LOOKUP_SLOT_CALL) { |
2889 // Call to a lookup slot (dynamically introduced variable). | 2932 // Call to a lookup slot (dynamically introduced variable). |
2890 VariableProxy* proxy = callee->AsVariableProxy(); | 2933 PushCalleeAndWithBaseObject(expr); |
2891 Label slow, done; | |
2892 | |
2893 { PreservePositionScope scope(masm()->positions_recorder()); | |
2894 // Generate code for loading from variables potentially shadowed | |
2895 // by eval-introduced variables. | |
2896 EmitDynamicLookupFastCase(proxy, NOT_INSIDE_TYPEOF, &slow, &done); | |
2897 } | |
2898 | |
2899 __ Bind(&slow); | |
2900 // Call the runtime to find the function to call (returned in x0) | |
2901 // and the object holding it (returned in x1). | |
2902 __ Mov(x10, Operand(proxy->name())); | |
2903 __ Push(context_register(), x10); | |
2904 __ CallRuntime(Runtime::kLoadLookupSlot, 2); | |
2905 __ Push(x0, x1); // Receiver, function. | |
2906 PrepareForBailoutForId(expr->EvalOrLookupId(), NO_REGISTERS); | |
2907 | |
2908 // If fast case code has been generated, emit code to push the | |
2909 // function and receiver and have the slow path jump around this | |
2910 // code. | |
2911 if (done.is_linked()) { | |
2912 Label call; | |
2913 __ B(&call); | |
2914 __ Bind(&done); | |
2915 // Push function. | |
2916 // The receiver is implicitly the global receiver. Indicate this | |
2917 // by passing the undefined to the call function stub. | |
2918 __ LoadRoot(x1, Heap::kUndefinedValueRootIndex); | |
2919 __ Push(x0, x1); | |
2920 __ Bind(&call); | |
2921 } | |
2922 | |
2923 // The receiver is either the global receiver or an object found | |
2924 // by LoadContextSlot. | |
2925 EmitCall(expr); | 2934 EmitCall(expr); |
2926 } else if (call_type == Call::PROPERTY_CALL) { | 2935 } else if (call_type == Call::PROPERTY_CALL) { |
2927 Property* property = callee->AsProperty(); | 2936 Property* property = callee->AsProperty(); |
2928 bool is_named_call = property->key()->IsPropertyName(); | 2937 bool is_named_call = property->key()->IsPropertyName(); |
2929 if (property->IsSuperAccess()) { | 2938 if (property->IsSuperAccess()) { |
2930 if (is_named_call) { | 2939 if (is_named_call) { |
2931 EmitSuperCallWithLoadIC(expr); | 2940 EmitSuperCallWithLoadIC(expr); |
2932 } else { | 2941 } else { |
2933 EmitKeyedSuperCallWithLoadIC(expr); | 2942 EmitKeyedSuperCallWithLoadIC(expr); |
2934 } | 2943 } |
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5586 } | 5595 } |
5587 | 5596 |
5588 return INTERRUPT; | 5597 return INTERRUPT; |
5589 } | 5598 } |
5590 | 5599 |
5591 | 5600 |
5592 } // namespace internal | 5601 } // namespace internal |
5593 } // namespace v8 | 5602 } // namespace v8 |
5594 | 5603 |
5595 #endif // V8_TARGET_ARCH_ARM64 | 5604 #endif // V8_TARGET_ARCH_ARM64 |
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