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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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| 139 Label ok; | 139 Label ok; |
| 140 __ testq(rcx, rcx); | 140 __ testq(rcx, rcx); |
| 141 __ j(zero, &ok, Label::kNear); | 141 __ j(zero, &ok, Label::kNear); |
| 142 // +1 for return address. | 142 // +1 for return address. |
| 143 int receiver_offset = (scope()->num_parameters() + 1) * kPointerSize; | 143 int receiver_offset = (scope()->num_parameters() + 1) * kPointerSize; |
| 144 __ LoadRoot(kScratchRegister, Heap::kUndefinedValueRootIndex); | 144 __ LoadRoot(kScratchRegister, Heap::kUndefinedValueRootIndex); |
| 145 __ movq(Operand(rsp, receiver_offset), kScratchRegister); | 145 __ movq(Operand(rsp, receiver_offset), kScratchRegister); |
| 146 __ bind(&ok); | 146 __ bind(&ok); |
| 147 } | 147 } |
| 148 | 148 |
| 149 // Open a frame scope to indicate that there is a frame on the stack. The |
| 150 // MANUAL indicates that the scope shouldn't actually generate code to set up |
| 151 // the frame (that is done below). |
| 152 FrameScope frame_scope(masm_, StackFrame::MANUAL); |
| 153 |
| 149 __ push(rbp); // Caller's frame pointer. | 154 __ push(rbp); // Caller's frame pointer. |
| 150 __ movq(rbp, rsp); | 155 __ movq(rbp, rsp); |
| 151 __ push(rsi); // Callee's context. | 156 __ push(rsi); // Callee's context. |
| 152 __ push(rdi); // Callee's JS Function. | 157 __ push(rdi); // Callee's JS Function. |
| 153 | 158 |
| 154 { Comment cmnt(masm_, "[ Allocate locals"); | 159 { Comment cmnt(masm_, "[ Allocate locals"); |
| 155 int locals_count = scope()->num_stack_slots(); | 160 int locals_count = scope()->num_stack_slots(); |
| 156 if (locals_count == 1) { | 161 if (locals_count == 1) { |
| 157 __ PushRoot(Heap::kUndefinedValueRootIndex); | 162 __ PushRoot(Heap::kUndefinedValueRootIndex); |
| 158 } else if (locals_count > 1) { | 163 } else if (locals_count > 1) { |
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| 4310 __ ret(0); | 4315 __ ret(0); |
| 4311 } | 4316 } |
| 4312 | 4317 |
| 4313 | 4318 |
| 4314 #undef __ | 4319 #undef __ |
| 4315 | 4320 |
| 4316 | 4321 |
| 4317 } } // namespace v8::internal | 4322 } } // namespace v8::internal |
| 4318 | 4323 |
| 4319 #endif // V8_TARGET_ARCH_X64 | 4324 #endif // V8_TARGET_ARCH_X64 |
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