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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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157 FrameScope frame_scope(masm_, StackFrame::MANUAL); | 157 FrameScope frame_scope(masm_, StackFrame::MANUAL); |
158 | 158 |
159 info->set_prologue_offset(masm_->pc_offset()); | 159 info->set_prologue_offset(masm_->pc_offset()); |
160 __ push(ebp); // Caller's frame pointer. | 160 __ push(ebp); // Caller's frame pointer. |
161 __ mov(ebp, esp); | 161 __ mov(ebp, esp); |
162 __ push(esi); // Callee's context. | 162 __ push(esi); // Callee's context. |
163 __ push(edi); // Callee's JS Function. | 163 __ push(edi); // Callee's JS Function. |
164 | 164 |
165 { Comment cmnt(masm_, "[ Allocate locals"); | 165 { Comment cmnt(masm_, "[ Allocate locals"); |
166 int locals_count = info->scope()->num_stack_slots(); | 166 int locals_count = info->scope()->num_stack_slots(); |
| 167 // Generators allocate locals, if any, in context slots. |
| 168 ASSERT(!info->function()->is_generator() || locals_count == 0); |
167 if (locals_count == 1) { | 169 if (locals_count == 1) { |
168 __ push(Immediate(isolate()->factory()->undefined_value())); | 170 __ push(Immediate(isolate()->factory()->undefined_value())); |
169 } else if (locals_count > 1) { | 171 } else if (locals_count > 1) { |
170 __ mov(eax, Immediate(isolate()->factory()->undefined_value())); | 172 __ mov(eax, Immediate(isolate()->factory()->undefined_value())); |
171 for (int i = 0; i < locals_count; i++) { | 173 for (int i = 0; i < locals_count; i++) { |
172 __ push(eax); | 174 __ push(eax); |
173 } | 175 } |
174 } | 176 } |
175 } | 177 } |
176 | 178 |
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4550 *stack_depth = 0; | 4552 *stack_depth = 0; |
4551 *context_length = 0; | 4553 *context_length = 0; |
4552 return previous_; | 4554 return previous_; |
4553 } | 4555 } |
4554 | 4556 |
4555 #undef __ | 4557 #undef __ |
4556 | 4558 |
4557 } } // namespace v8::internal | 4559 } } // namespace v8::internal |
4558 | 4560 |
4559 #endif // V8_TARGET_ARCH_IA32 | 4561 #endif // V8_TARGET_ARCH_IA32 |
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