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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 #include "src/v8.h" | 5 #include "src/v8.h" |
6 | 6 |
7 #if V8_TARGET_ARCH_X64 | 7 #if V8_TARGET_ARCH_X64 |
8 | 8 |
9 #include "src/arguments.h" | 9 #include "src/arguments.h" |
10 #include "src/codegen.h" | 10 #include "src/codegen.h" |
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741 if (!miss->is_unused()) { | 741 if (!miss->is_unused()) { |
742 Label success; | 742 Label success; |
743 __ jmp(&success); | 743 __ jmp(&success); |
744 GenerateRestoreName(miss, name); | 744 GenerateRestoreName(miss, name); |
745 TailCallBuiltin(masm(), MissBuiltin(kind())); | 745 TailCallBuiltin(masm(), MissBuiltin(kind())); |
746 __ bind(&success); | 746 __ bind(&success); |
747 } | 747 } |
748 } | 748 } |
749 | 749 |
750 | 750 |
751 Register NamedLoadHandlerCompiler::CallbackFrontend(Register object_reg, | |
752 Handle<Name> name, | |
753 Handle<Object> callback) { | |
754 Label miss; | |
755 | |
756 Register reg = FrontendHeader(object_reg, name, &miss); | |
757 | |
758 if (!holder()->HasFastProperties()) { | |
759 DCHECK(!holder()->IsGlobalObject()); | |
760 DCHECK(!reg.is(scratch2())); | |
761 DCHECK(!reg.is(scratch3())); | |
762 DCHECK(!reg.is(scratch4())); | |
763 | |
764 // Load the properties dictionary. | |
765 Register dictionary = scratch4(); | |
766 __ movp(dictionary, FieldOperand(reg, JSObject::kPropertiesOffset)); | |
767 | |
768 // Probe the dictionary. | |
769 Label probe_done; | |
770 NameDictionaryLookupStub::GeneratePositiveLookup(masm(), | |
771 &miss, | |
772 &probe_done, | |
773 dictionary, | |
774 this->name(), | |
775 scratch2(), | |
776 scratch3()); | |
777 __ bind(&probe_done); | |
778 | |
779 // If probing finds an entry in the dictionary, scratch3 contains the | |
780 // index into the dictionary. Check that the value is the callback. | |
781 Register index = scratch3(); | |
782 const int kElementsStartOffset = | |
783 NameDictionary::kHeaderSize + | |
784 NameDictionary::kElementsStartIndex * kPointerSize; | |
785 const int kValueOffset = kElementsStartOffset + kPointerSize; | |
786 __ movp(scratch2(), | |
787 Operand(dictionary, index, times_pointer_size, | |
788 kValueOffset - kHeapObjectTag)); | |
789 __ Move(scratch3(), callback, RelocInfo::EMBEDDED_OBJECT); | |
790 __ cmpp(scratch2(), scratch3()); | |
791 __ j(not_equal, &miss); | |
792 } | |
793 | |
794 FrontendFooter(name, &miss); | |
795 return reg; | |
796 } | |
797 | |
798 | |
799 void NamedLoadHandlerCompiler::GenerateLoadField( | 751 void NamedLoadHandlerCompiler::GenerateLoadField( |
800 Register reg, FieldIndex field, Representation representation) { | 752 Register reg, FieldIndex field, Representation representation) { |
801 if (!reg.is(receiver())) __ movp(receiver(), reg); | 753 if (!reg.is(receiver())) __ movp(receiver(), reg); |
802 LoadFieldStub stub(isolate(), field); | 754 LoadFieldStub stub(isolate(), field); |
803 GenerateTailCall(masm(), stub.GetCode()); | 755 GenerateTailCall(masm(), stub.GetCode()); |
804 } | 756 } |
805 | 757 |
806 | 758 |
807 void NamedLoadHandlerCompiler::GenerateLoadCallback( | 759 void NamedLoadHandlerCompiler::GenerateLoadCallback( |
808 Register reg, Handle<ExecutableAccessorInfo> callback) { | 760 Register reg, Handle<ExecutableAccessorInfo> callback) { |
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1267 // ----------------------------------- | 1219 // ----------------------------------- |
1268 TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Miss); | 1220 TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Miss); |
1269 } | 1221 } |
1270 | 1222 |
1271 | 1223 |
1272 #undef __ | 1224 #undef __ |
1273 | 1225 |
1274 } } // namespace v8::internal | 1226 } } // namespace v8::internal |
1275 | 1227 |
1276 #endif // V8_TARGET_ARCH_X64 | 1228 #endif // V8_TARGET_ARCH_X64 |
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