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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_IA32 | 5 #if V8_TARGET_ARCH_IA32 |
6 | 6 |
7 #include "src/ast/scopes.h" | 7 #include "src/ast/scopes.h" |
8 #include "src/code-factory.h" | 8 #include "src/code-factory.h" |
9 #include "src/code-stubs.h" | 9 #include "src/code-stubs.h" |
10 #include "src/codegen.h" | 10 #include "src/codegen.h" |
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2784 // If the object is not a value type, return the object. | 2784 // If the object is not a value type, return the object. |
2785 __ CmpObjectType(eax, JS_VALUE_TYPE, ebx); | 2785 __ CmpObjectType(eax, JS_VALUE_TYPE, ebx); |
2786 __ j(not_equal, &done, Label::kNear); | 2786 __ j(not_equal, &done, Label::kNear); |
2787 __ mov(eax, FieldOperand(eax, JSValue::kValueOffset)); | 2787 __ mov(eax, FieldOperand(eax, JSValue::kValueOffset)); |
2788 | 2788 |
2789 __ bind(&done); | 2789 __ bind(&done); |
2790 context()->Plug(eax); | 2790 context()->Plug(eax); |
2791 } | 2791 } |
2792 | 2792 |
2793 | 2793 |
2794 void FullCodeGenerator::EmitOneByteSeqStringSetChar(CallRuntime* expr) { | |
2795 ZoneList<Expression*>* args = expr->arguments(); | |
2796 DCHECK_EQ(3, args->length()); | |
2797 | |
2798 Register string = eax; | |
2799 Register index = ebx; | |
2800 Register value = ecx; | |
2801 | |
2802 VisitForStackValue(args->at(0)); // index | |
2803 VisitForStackValue(args->at(1)); // value | |
2804 VisitForAccumulatorValue(args->at(2)); // string | |
2805 | |
2806 PopOperand(value); | |
2807 PopOperand(index); | |
2808 | |
2809 if (FLAG_debug_code) { | |
2810 __ test(value, Immediate(kSmiTagMask)); | |
2811 __ Check(zero, kNonSmiValue); | |
2812 __ test(index, Immediate(kSmiTagMask)); | |
2813 __ Check(zero, kNonSmiValue); | |
2814 } | |
2815 | |
2816 __ SmiUntag(value); | |
2817 __ SmiUntag(index); | |
2818 | |
2819 if (FLAG_debug_code) { | |
2820 static const uint32_t one_byte_seq_type = kSeqStringTag | kOneByteStringTag; | |
2821 __ EmitSeqStringSetCharCheck(string, index, value, one_byte_seq_type); | |
2822 } | |
2823 | |
2824 __ mov_b(FieldOperand(string, index, times_1, SeqOneByteString::kHeaderSize), | |
2825 value); | |
2826 context()->Plug(string); | |
2827 } | |
2828 | |
2829 | |
2830 void FullCodeGenerator::EmitTwoByteSeqStringSetChar(CallRuntime* expr) { | |
2831 ZoneList<Expression*>* args = expr->arguments(); | |
2832 DCHECK_EQ(3, args->length()); | |
2833 | |
2834 Register string = eax; | |
2835 Register index = ebx; | |
2836 Register value = ecx; | |
2837 | |
2838 VisitForStackValue(args->at(0)); // index | |
2839 VisitForStackValue(args->at(1)); // value | |
2840 VisitForAccumulatorValue(args->at(2)); // string | |
2841 PopOperand(value); | |
2842 PopOperand(index); | |
2843 | |
2844 if (FLAG_debug_code) { | |
2845 __ test(value, Immediate(kSmiTagMask)); | |
2846 __ Check(zero, kNonSmiValue); | |
2847 __ test(index, Immediate(kSmiTagMask)); | |
2848 __ Check(zero, kNonSmiValue); | |
2849 __ SmiUntag(index); | |
2850 static const uint32_t two_byte_seq_type = kSeqStringTag | kTwoByteStringTag; | |
2851 __ EmitSeqStringSetCharCheck(string, index, value, two_byte_seq_type); | |
2852 __ SmiTag(index); | |
2853 } | |
2854 | |
2855 __ SmiUntag(value); | |
2856 // No need to untag a smi for two-byte addressing. | |
2857 __ mov_w(FieldOperand(string, index, times_1, SeqTwoByteString::kHeaderSize), | |
2858 value); | |
2859 context()->Plug(string); | |
2860 } | |
2861 | |
2862 | |
2863 void FullCodeGenerator::EmitStringCharFromCode(CallRuntime* expr) { | 2794 void FullCodeGenerator::EmitStringCharFromCode(CallRuntime* expr) { |
2864 ZoneList<Expression*>* args = expr->arguments(); | 2795 ZoneList<Expression*>* args = expr->arguments(); |
2865 DCHECK(args->length() == 1); | 2796 DCHECK(args->length() == 1); |
2866 | 2797 |
2867 VisitForAccumulatorValue(args->at(0)); | 2798 VisitForAccumulatorValue(args->at(0)); |
2868 | 2799 |
2869 Label done; | 2800 Label done; |
2870 StringCharFromCodeGenerator generator(eax, ebx); | 2801 StringCharFromCodeGenerator generator(eax, ebx); |
2871 generator.GenerateFast(masm_); | 2802 generator.GenerateFast(masm_); |
2872 __ jmp(&done); | 2803 __ jmp(&done); |
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3839 isolate->builtins()->OnStackReplacement()->entry(), | 3770 isolate->builtins()->OnStackReplacement()->entry(), |
3840 Assembler::target_address_at(call_target_address, unoptimized_code)); | 3771 Assembler::target_address_at(call_target_address, unoptimized_code)); |
3841 return ON_STACK_REPLACEMENT; | 3772 return ON_STACK_REPLACEMENT; |
3842 } | 3773 } |
3843 | 3774 |
3844 | 3775 |
3845 } // namespace internal | 3776 } // namespace internal |
3846 } // namespace v8 | 3777 } // namespace v8 |
3847 | 3778 |
3848 #endif // V8_TARGET_ARCH_IA32 | 3779 #endif // V8_TARGET_ARCH_IA32 |
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