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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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155 __ LoadRoot(r2, Heap::kUndefinedValueRootIndex); | 155 __ LoadRoot(r2, Heap::kUndefinedValueRootIndex); |
156 __ str(r2, MemOperand(sp, receiver_offset)); | 156 __ str(r2, MemOperand(sp, receiver_offset)); |
157 __ bind(&ok); | 157 __ bind(&ok); |
158 } | 158 } |
159 | 159 |
160 // Open a frame scope to indicate that there is a frame on the stack. The | 160 // Open a frame scope to indicate that there is a frame on the stack. The |
161 // MANUAL indicates that the scope shouldn't actually generate code to set up | 161 // MANUAL indicates that the scope shouldn't actually generate code to set up |
162 // the frame (that is done below). | 162 // the frame (that is done below). |
163 FrameScope frame_scope(masm_, StackFrame::MANUAL); | 163 FrameScope frame_scope(masm_, StackFrame::MANUAL); |
164 | 164 |
165 int locals_count = info->scope()->num_stack_slots(); | |
166 | |
167 info->set_prologue_offset(masm_->pc_offset()); | 165 info->set_prologue_offset(masm_->pc_offset()); |
168 { | 166 { |
169 PredictableCodeSizeScope predictible_code_size_scope( | 167 PredictableCodeSizeScope predictible_code_size_scope( |
170 masm_, kNoCodeAgeSequenceLength * Assembler::kInstrSize); | 168 masm_, kNoCodeAgeSequenceLength * Assembler::kInstrSize); |
171 // The following three instructions must remain together and unmodified | 169 // The following three instructions must remain together and unmodified |
172 // for code aging to work properly. | 170 // for code aging to work properly. |
173 __ stm(db_w, sp, r1.bit() | cp.bit() | fp.bit() | lr.bit()); | 171 __ stm(db_w, sp, r1.bit() | cp.bit() | fp.bit() | lr.bit()); |
174 // Load undefined value here, so the value is ready for the loop | 172 // Load undefined value here, so the value is ready for the loop |
175 // below. | 173 // below. |
176 __ LoadRoot(ip, Heap::kUndefinedValueRootIndex); | 174 __ LoadRoot(ip, Heap::kUndefinedValueRootIndex); |
177 // Adjust FP to point to saved FP. | 175 // Adjust FP to point to saved FP. |
178 __ add(fp, sp, Operand(2 * kPointerSize)); | 176 __ add(fp, sp, Operand(2 * kPointerSize)); |
179 } | 177 } |
180 | 178 |
181 { Comment cmnt(masm_, "[ Allocate locals"); | 179 { Comment cmnt(masm_, "[ Allocate locals"); |
| 180 int locals_count = info->scope()->num_stack_slots(); |
| 181 // Generators allocate locals, if any, in context slots. |
| 182 ASSERT(!info->function()->is_generator() || locals_count == 0); |
182 for (int i = 0; i < locals_count; i++) { | 183 for (int i = 0; i < locals_count; i++) { |
183 __ push(ip); | 184 __ push(ip); |
184 } | 185 } |
185 } | 186 } |
186 | 187 |
187 bool function_in_register = true; | 188 bool function_in_register = true; |
188 | 189 |
189 // Possibly allocate a local context. | 190 // Possibly allocate a local context. |
190 int heap_slots = info->scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS; | 191 int heap_slots = info->scope()->num_heap_slots() - Context::MIN_CONTEXT_SLOTS; |
191 if (heap_slots > 0) { | 192 if (heap_slots > 0) { |
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4580 *context_length = 0; | 4581 *context_length = 0; |
4581 return previous_; | 4582 return previous_; |
4582 } | 4583 } |
4583 | 4584 |
4584 | 4585 |
4585 #undef __ | 4586 #undef __ |
4586 | 4587 |
4587 } } // namespace v8::internal | 4588 } } // namespace v8::internal |
4588 | 4589 |
4589 #endif // V8_TARGET_ARCH_ARM | 4590 #endif // V8_TARGET_ARCH_ARM |
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