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1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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888 // -- rdx : receiver | 888 // -- rdx : receiver |
889 // -- rsp[0] : return address | 889 // -- rsp[0] : return address |
890 // ----------------------------------- | 890 // ----------------------------------- |
891 Label slow; | 891 Label slow; |
892 | 892 |
893 // Check that the receiver isn't a smi. | 893 // Check that the receiver isn't a smi. |
894 __ JumpIfSmi(rdx, &slow); | 894 __ JumpIfSmi(rdx, &slow); |
895 | 895 |
896 // Check that the key is an array index, that is Uint32. | 896 // Check that the key is an array index, that is Uint32. |
897 STATIC_ASSERT(kSmiValueSize <= 32); | 897 STATIC_ASSERT(kSmiValueSize <= 32); |
898 __ JumpIfNotPositiveSmi(rax, &slow); | 898 __ JumpUnlessNonNegativeSmi(rax, &slow); |
899 | 899 |
900 // Get the map of the receiver. | 900 // Get the map of the receiver. |
901 __ movq(rcx, FieldOperand(rdx, HeapObject::kMapOffset)); | 901 __ movq(rcx, FieldOperand(rdx, HeapObject::kMapOffset)); |
902 | 902 |
903 // Check that it has indexed interceptor and access checks | 903 // Check that it has indexed interceptor and access checks |
904 // are not enabled for this object. | 904 // are not enabled for this object. |
905 __ movb(rcx, FieldOperand(rcx, Map::kBitFieldOffset)); | 905 __ movb(rcx, FieldOperand(rcx, Map::kBitFieldOffset)); |
906 __ andb(rcx, Immediate(kSlowCaseBitFieldMask)); | 906 __ andb(rcx, Immediate(kSlowCaseBitFieldMask)); |
907 __ cmpb(rcx, Immediate(1 << Map::kHasIndexedInterceptor)); | 907 __ cmpb(rcx, Immediate(1 << Map::kHasIndexedInterceptor)); |
908 __ j(not_zero, &slow); | 908 __ j(not_zero, &slow); |
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1898 GenerateMiss(masm); | 1898 GenerateMiss(masm); |
1899 } | 1899 } |
1900 | 1900 |
1901 | 1901 |
1902 #undef __ | 1902 #undef __ |
1903 | 1903 |
1904 | 1904 |
1905 } } // namespace v8::internal | 1905 } } // namespace v8::internal |
1906 | 1906 |
1907 #endif // V8_TARGET_ARCH_X64 | 1907 #endif // V8_TARGET_ARCH_X64 |
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