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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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