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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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2957 __ j(zero, label); | 2957 __ j(zero, label); |
2958 __ mov(scratch, FieldOperand(object, HeapObject::kMapOffset)); | 2958 __ mov(scratch, FieldOperand(object, HeapObject::kMapOffset)); |
2959 __ movzx_b(scratch, FieldOperand(scratch, Map::kInstanceTypeOffset)); | 2959 __ movzx_b(scratch, FieldOperand(scratch, Map::kInstanceTypeOffset)); |
2960 __ and_(scratch, kIsSymbolMask | kIsNotStringMask); | 2960 __ and_(scratch, kIsSymbolMask | kIsNotStringMask); |
2961 __ cmp(scratch, kSymbolTag | kStringTag); | 2961 __ cmp(scratch, kSymbolTag | kStringTag); |
2962 __ j(not_equal, label); | 2962 __ j(not_equal, label); |
2963 } | 2963 } |
2964 | 2964 |
2965 | 2965 |
2966 void StackCheckStub::Generate(MacroAssembler* masm) { | 2966 void StackCheckStub::Generate(MacroAssembler* masm) { |
2967 // Because builtins always remove the receiver from the stack, we | 2967 __ TailCallRuntime(Runtime::kStackGuard, 0, 1); |
2968 // have to fake one to avoid underflowing the stack. The receiver | |
2969 // must be inserted below the return address on the stack so we | |
2970 // temporarily store that in a register. | |
2971 __ pop(eax); | |
2972 __ push(Immediate(Smi::FromInt(0))); | |
2973 __ push(eax); | |
2974 | |
2975 // Do tail-call to runtime routine. | |
2976 __ TailCallRuntime(Runtime::kStackGuard, 1, 1); | |
2977 } | 2968 } |
2978 | 2969 |
2979 | 2970 |
2980 void CallFunctionStub::Generate(MacroAssembler* masm) { | 2971 void CallFunctionStub::Generate(MacroAssembler* masm) { |
2981 Label slow; | 2972 Label slow; |
2982 | 2973 |
2983 // If the receiver might be a value (string, number or boolean) check for this | 2974 // If the receiver might be a value (string, number or boolean) check for this |
2984 // and box it if it is. | 2975 // and box it if it is. |
2985 if (ReceiverMightBeValue()) { | 2976 if (ReceiverMightBeValue()) { |
2986 // Get the receiver from the stack. | 2977 // Get the receiver from the stack. |
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4650 // tagged as a small integer. | 4641 // tagged as a small integer. |
4651 __ bind(&runtime); | 4642 __ bind(&runtime); |
4652 __ TailCallRuntime(Runtime::kStringCompare, 2, 1); | 4643 __ TailCallRuntime(Runtime::kStringCompare, 2, 1); |
4653 } | 4644 } |
4654 | 4645 |
4655 #undef __ | 4646 #undef __ |
4656 | 4647 |
4657 } } // namespace v8::internal | 4648 } } // namespace v8::internal |
4658 | 4649 |
4659 #endif // V8_TARGET_ARCH_IA32 | 4650 #endif // V8_TARGET_ARCH_IA32 |
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