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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 // 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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926 receiver = rax; | 926 receiver = rax; |
927 } | 927 } |
928 | 928 |
929 StubCompiler::GenerateLoadFunctionPrototype(masm, receiver, r8, r9, &miss); | 929 StubCompiler::GenerateLoadFunctionPrototype(masm, receiver, r8, r9, &miss); |
930 __ bind(&miss); | 930 __ bind(&miss); |
931 StubCompiler::TailCallBuiltin( | 931 StubCompiler::TailCallBuiltin( |
932 masm, BaseLoadStoreStubCompiler::MissBuiltin(kind())); | 932 masm, BaseLoadStoreStubCompiler::MissBuiltin(kind())); |
933 } | 933 } |
934 | 934 |
935 | 935 |
936 void StoreArrayLengthStub::Generate(MacroAssembler* masm) { | |
937 // ----------- S t a t e ------------- | |
938 // -- rax : value | |
939 // -- rcx : key | |
940 // -- rdx : receiver | |
941 // -- rsp[0] : return address | |
942 // ----------------------------------- | |
943 // | |
944 // This accepts as a receiver anything JSArray::SetElementsLength accepts | |
945 // (currently anything except for external arrays which means anything with | |
946 // elements of FixedArray type). Value must be a number, but only smis are | |
947 // accepted as the most common case. | |
948 | |
949 Label miss; | |
950 | |
951 Register receiver = rdx; | |
952 Register value = rax; | |
953 Register scratch = rbx; | |
954 if (kind() == Code::KEYED_STORE_IC) { | |
955 __ Cmp(rcx, masm->isolate()->factory()->length_string()); | |
956 __ j(not_equal, &miss); | |
957 } | |
958 | |
959 // Check that the receiver isn't a smi. | |
960 __ JumpIfSmi(receiver, &miss); | |
961 | |
962 // Check that the object is a JS array. | |
963 __ CmpObjectType(receiver, JS_ARRAY_TYPE, scratch); | |
964 __ j(not_equal, &miss); | |
965 | |
966 // Check that elements are FixedArray. | |
967 // We rely on StoreIC_ArrayLength below to deal with all types of | |
968 // fast elements (including COW). | |
969 __ movp(scratch, FieldOperand(receiver, JSArray::kElementsOffset)); | |
970 __ CmpObjectType(scratch, FIXED_ARRAY_TYPE, scratch); | |
971 __ j(not_equal, &miss); | |
972 | |
973 // Check that the array has fast properties, otherwise the length | |
974 // property might have been redefined. | |
975 __ movp(scratch, FieldOperand(receiver, JSArray::kPropertiesOffset)); | |
976 __ CompareRoot(FieldOperand(scratch, FixedArray::kMapOffset), | |
977 Heap::kHashTableMapRootIndex); | |
978 __ j(equal, &miss); | |
979 | |
980 // Check that value is a smi. | |
981 __ JumpIfNotSmi(value, &miss); | |
982 | |
983 // Prepare tail call to StoreIC_ArrayLength. | |
984 __ PopReturnAddressTo(scratch); | |
985 __ push(receiver); | |
986 __ push(value); | |
987 __ PushReturnAddressFrom(scratch); | |
988 | |
989 ExternalReference ref = | |
990 ExternalReference(IC_Utility(IC::kStoreIC_ArrayLength), masm->isolate()); | |
991 __ TailCallExternalReference(ref, 2, 1); | |
992 | |
993 __ bind(&miss); | |
994 | |
995 StubCompiler::TailCallBuiltin( | |
996 masm, BaseLoadStoreStubCompiler::MissBuiltin(kind())); | |
997 } | |
998 | |
999 | |
1000 void ArgumentsAccessStub::GenerateReadElement(MacroAssembler* masm) { | 936 void ArgumentsAccessStub::GenerateReadElement(MacroAssembler* masm) { |
1001 // The key is in rdx and the parameter count is in rax. | 937 // The key is in rdx and the parameter count is in rax. |
1002 | 938 |
1003 // Check that the key is a smi. | 939 // Check that the key is a smi. |
1004 Label slow; | 940 Label slow; |
1005 __ JumpIfNotSmi(rdx, &slow); | 941 __ JumpIfNotSmi(rdx, &slow); |
1006 | 942 |
1007 // Check if the calling frame is an arguments adaptor frame. We look at the | 943 // Check if the calling frame is an arguments adaptor frame. We look at the |
1008 // context offset, and if the frame is not a regular one, then we find a | 944 // context offset, and if the frame is not a regular one, then we find a |
1009 // Smi instead of the context. We can't use SmiCompare here, because that | 945 // Smi instead of the context. We can't use SmiCompare here, because that |
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5315 return_value_operand, | 5251 return_value_operand, |
5316 NULL); | 5252 NULL); |
5317 } | 5253 } |
5318 | 5254 |
5319 | 5255 |
5320 #undef __ | 5256 #undef __ |
5321 | 5257 |
5322 } } // namespace v8::internal | 5258 } } // namespace v8::internal |
5323 | 5259 |
5324 #endif // V8_TARGET_ARCH_X64 | 5260 #endif // V8_TARGET_ARCH_X64 |
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