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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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251 Register receiver, | 251 Register receiver, |
252 Register scratch, | 252 Register scratch, |
253 Label* smi, | 253 Label* smi, |
254 Label* non_string_object) { | 254 Label* non_string_object) { |
255 // Check that the object isn't a smi. | 255 // Check that the object isn't a smi. |
256 __ JumpIfSmi(receiver, smi); | 256 __ JumpIfSmi(receiver, smi); |
257 | 257 |
258 // Check that the object is a string. | 258 // Check that the object is a string. |
259 __ movq(scratch, FieldOperand(receiver, HeapObject::kMapOffset)); | 259 __ movq(scratch, FieldOperand(receiver, HeapObject::kMapOffset)); |
260 __ movzxbq(scratch, FieldOperand(scratch, Map::kInstanceTypeOffset)); | 260 __ movzxbq(scratch, FieldOperand(scratch, Map::kInstanceTypeOffset)); |
261 ASSERT(kNotStringTag != 0); | 261 STATIC_ASSERT(kNotStringTag != 0); |
262 __ testl(scratch, Immediate(kNotStringTag)); | 262 __ testl(scratch, Immediate(kNotStringTag)); |
263 __ j(not_zero, non_string_object); | 263 __ j(not_zero, non_string_object); |
264 } | 264 } |
265 | 265 |
266 | 266 |
267 void StubCompiler::GenerateLoadStringLength(MacroAssembler* masm, | 267 void StubCompiler::GenerateLoadStringLength(MacroAssembler* masm, |
268 Register receiver, | 268 Register receiver, |
269 Register scratch1, | 269 Register scratch1, |
270 Register scratch2, | 270 Register scratch2, |
271 Label* miss, | 271 Label* miss, |
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3063 // code for the function thereby hitting the break points. | 3063 // code for the function thereby hitting the break points. |
3064 __ movq(rbx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset)); | 3064 __ movq(rbx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset)); |
3065 __ movq(rbx, FieldOperand(rbx, SharedFunctionInfo::kDebugInfoOffset)); | 3065 __ movq(rbx, FieldOperand(rbx, SharedFunctionInfo::kDebugInfoOffset)); |
3066 __ cmpq(rbx, r8); | 3066 __ cmpq(rbx, r8); |
3067 __ j(not_equal, &generic_stub_call); | 3067 __ j(not_equal, &generic_stub_call); |
3068 #endif | 3068 #endif |
3069 | 3069 |
3070 // Load the initial map and verify that it is in fact a map. | 3070 // Load the initial map and verify that it is in fact a map. |
3071 __ movq(rbx, FieldOperand(rdi, JSFunction::kPrototypeOrInitialMapOffset)); | 3071 __ movq(rbx, FieldOperand(rdi, JSFunction::kPrototypeOrInitialMapOffset)); |
3072 // Will both indicate a NULL and a Smi. | 3072 // Will both indicate a NULL and a Smi. |
3073 ASSERT(kSmiTag == 0); | 3073 STATIC_ASSERT(kSmiTag == 0); |
3074 __ JumpIfSmi(rbx, &generic_stub_call); | 3074 __ JumpIfSmi(rbx, &generic_stub_call); |
3075 __ CmpObjectType(rbx, MAP_TYPE, rcx); | 3075 __ CmpObjectType(rbx, MAP_TYPE, rcx); |
3076 __ j(not_equal, &generic_stub_call); | 3076 __ j(not_equal, &generic_stub_call); |
3077 | 3077 |
3078 #ifdef DEBUG | 3078 #ifdef DEBUG |
3079 // Cannot construct functions this way. | 3079 // Cannot construct functions this way. |
3080 // rdi: constructor | 3080 // rdi: constructor |
3081 // rbx: initial map | 3081 // rbx: initial map |
3082 __ CmpInstanceType(rbx, JS_FUNCTION_TYPE); | 3082 __ CmpInstanceType(rbx, JS_FUNCTION_TYPE); |
3083 __ Assert(not_equal, "Function constructed by construct stub."); | 3083 __ Assert(not_equal, "Function constructed by construct stub."); |
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3767 masm->isolate()->builtins()->KeyedStoreIC_MissForceGeneric(); | 3767 masm->isolate()->builtins()->KeyedStoreIC_MissForceGeneric(); |
3768 __ jmp(ic_force_generic, RelocInfo::CODE_TARGET); | 3768 __ jmp(ic_force_generic, RelocInfo::CODE_TARGET); |
3769 } | 3769 } |
3770 | 3770 |
3771 | 3771 |
3772 #undef __ | 3772 #undef __ |
3773 | 3773 |
3774 } } // namespace v8::internal | 3774 } } // namespace v8::internal |
3775 | 3775 |
3776 #endif // V8_TARGET_ARCH_X64 | 3776 #endif // V8_TARGET_ARCH_X64 |
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