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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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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126 info_->function()->name()->IsEqualTo(CStrVector(FLAG_stop_at))) { | 126 info_->function()->name()->IsEqualTo(CStrVector(FLAG_stop_at))) { |
127 __ int3(); | 127 __ int3(); |
128 } | 128 } |
129 #endif | 129 #endif |
130 | 130 |
131 // Strict mode functions need to replace the receiver with undefined | 131 // Strict mode functions need to replace the receiver with undefined |
132 // when called as functions (without an explicit receiver | 132 // when called as functions (without an explicit receiver |
133 // object). rcx is zero for method calls and non-zero for function | 133 // object). rcx is zero for method calls and non-zero for function |
134 // calls. | 134 // calls. |
135 if (!info_->is_classic_mode() || info_->is_native()) { | 135 if (!info_->is_classic_mode() || info_->is_native()) { |
| 136 Label begin; |
| 137 __ bind(&begin); |
136 Label ok; | 138 Label ok; |
137 __ testq(rcx, rcx); | 139 __ testq(rcx, rcx); |
138 __ j(zero, &ok, Label::kNear); | 140 __ j(zero, &ok, Label::kNear); |
139 // +1 for return address. | 141 // +1 for return address. |
140 int receiver_offset = (scope()->num_parameters() + 1) * kPointerSize; | 142 int receiver_offset = (scope()->num_parameters() + 1) * kPointerSize; |
141 __ LoadRoot(kScratchRegister, Heap::kUndefinedValueRootIndex); | 143 __ LoadRoot(kScratchRegister, Heap::kUndefinedValueRootIndex); |
142 __ movq(Operand(rsp, receiver_offset), kScratchRegister); | 144 __ movq(Operand(rsp, receiver_offset), kScratchRegister); |
143 __ bind(&ok); | 145 __ bind(&ok); |
| 146 ASSERT_EQ(kSizeOfOptimizedStrictModePrologue, ok.pos() - begin.pos()); |
144 } | 147 } |
145 | 148 |
146 __ push(rbp); // Caller's frame pointer. | 149 __ push(rbp); // Caller's frame pointer. |
147 __ movq(rbp, rsp); | 150 __ movq(rbp, rsp); |
148 __ push(rsi); // Callee's context. | 151 __ push(rsi); // Callee's context. |
149 __ push(rdi); // Callee's JS function. | 152 __ push(rdi); // Callee's JS function. |
150 | 153 |
151 // Reserve space for the stack slots needed by the code. | 154 // Reserve space for the stack slots needed by the code. |
152 int slots = GetStackSlotCount(); | 155 int slots = GetStackSlotCount(); |
153 if (slots > 0) { | 156 if (slots > 0) { |
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5311 FixedArray::kHeaderSize - kPointerSize)); | 5314 FixedArray::kHeaderSize - kPointerSize)); |
5312 __ bind(&done); | 5315 __ bind(&done); |
5313 } | 5316 } |
5314 | 5317 |
5315 | 5318 |
5316 #undef __ | 5319 #undef __ |
5317 | 5320 |
5318 } } // namespace v8::internal | 5321 } } // namespace v8::internal |
5319 | 5322 |
5320 #endif // V8_TARGET_ARCH_X64 | 5323 #endif // V8_TARGET_ARCH_X64 |
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