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| 1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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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| 160 // Open a frame scope to indicate that there is a frame on the stack. | 160 // Open a frame scope to indicate that there is a frame on the stack. |
| 161 // The MANUAL indicates that the scope shouldn't actually generate code | 161 // The MANUAL indicates that the scope shouldn't actually generate code |
| 162 // to set up the frame because we do it manually below. | 162 // to set up the frame because we do it manually below. |
| 163 FrameScope frame_scope(masm_, StackFrame::MANUAL); | 163 FrameScope frame_scope(masm_, StackFrame::MANUAL); |
| 164 | 164 |
| 165 // This call emits the following sequence in a way that can be patched for | 165 // This call emits the following sequence in a way that can be patched for |
| 166 // code ageing support: | 166 // code ageing support: |
| 167 // Push(lr, fp, cp, x1); | 167 // Push(lr, fp, cp, x1); |
| 168 // Add(fp, jssp, 2 * kPointerSize); | 168 // Add(fp, jssp, 2 * kPointerSize); |
| 169 info->set_prologue_offset(masm_->pc_offset()); | 169 info->set_prologue_offset(masm_->pc_offset()); |
| 170 __ EmitFrameSetupForCodeAgePatching(); | 170 __ Prologue(BUILD_FUNCTION_FRAME); |
| 171 info->AddNoFrameRange(0, masm_->pc_offset()); | 171 info->AddNoFrameRange(0, masm_->pc_offset()); |
| 172 | 172 |
| 173 // Reserve space on the stack for locals. | 173 // Reserve space on the stack for locals. |
| 174 { Comment cmnt(masm_, "[ Allocate locals"); | 174 { Comment cmnt(masm_, "[ Allocate locals"); |
| 175 int locals_count = info->scope()->num_stack_slots(); | 175 int locals_count = info->scope()->num_stack_slots(); |
| 176 // Generators allocate locals, if any, in context slots. | 176 // Generators allocate locals, if any, in context slots. |
| 177 ASSERT(!info->function()->is_generator() || locals_count == 0); | 177 ASSERT(!info->function()->is_generator() || locals_count == 0); |
| 178 | 178 |
| 179 if (locals_count > 0) { | 179 if (locals_count > 0) { |
| 180 __ LoadRoot(x10, Heap::kUndefinedValueRootIndex); | 180 __ LoadRoot(x10, Heap::kUndefinedValueRootIndex); |
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| 1162 __ B(&exit); | 1162 __ B(&exit); |
| 1163 | 1163 |
| 1164 // We got a fixed array in register x0. Iterate through that. | 1164 // We got a fixed array in register x0. Iterate through that. |
| 1165 Label non_proxy; | 1165 Label non_proxy; |
| 1166 __ Bind(&fixed_array); | 1166 __ Bind(&fixed_array); |
| 1167 | 1167 |
| 1168 Handle<Cell> cell = isolate()->factory()->NewCell( | 1168 Handle<Cell> cell = isolate()->factory()->NewCell( |
| 1169 Handle<Object>(Smi::FromInt(TypeFeedbackCells::kForInFastCaseMarker), | 1169 Handle<Object>(Smi::FromInt(TypeFeedbackCells::kForInFastCaseMarker), |
| 1170 isolate())); | 1170 isolate())); |
| 1171 RecordTypeFeedbackCell(stmt->ForInFeedbackId(), cell); | 1171 RecordTypeFeedbackCell(stmt->ForInFeedbackId(), cell); |
| 1172 __ LoadHeapObject(x1, cell); | 1172 __ LoadObject(x1, cell); |
| 1173 __ Mov(x10, Operand(Smi::FromInt(TypeFeedbackCells::kForInSlowCaseMarker))); | 1173 __ Mov(x10, Operand(Smi::FromInt(TypeFeedbackCells::kForInSlowCaseMarker))); |
| 1174 __ Str(x10, FieldMemOperand(x1, Cell::kValueOffset)); | 1174 __ Str(x10, FieldMemOperand(x1, Cell::kValueOffset)); |
| 1175 | 1175 |
| 1176 __ Mov(x1, Operand(Smi::FromInt(1))); // Smi indicates slow check. | 1176 __ Mov(x1, Operand(Smi::FromInt(1))); // Smi indicates slow check. |
| 1177 __ Peek(x10, 0); // Get enumerated object. | 1177 __ Peek(x10, 0); // Get enumerated object. |
| 1178 STATIC_ASSERT(FIRST_JS_PROXY_TYPE == FIRST_SPEC_OBJECT_TYPE); | 1178 STATIC_ASSERT(FIRST_JS_PROXY_TYPE == FIRST_SPEC_OBJECT_TYPE); |
| 1179 // TODO(all): similar check was done already. Can we avoid it here? | 1179 // TODO(all): similar check was done already. Can we avoid it here? |
| 1180 __ JumpIfObjectType(x10, x11, x12, LAST_JS_PROXY_TYPE, &non_proxy, gt); | 1180 __ JumpIfObjectType(x10, x11, x12, LAST_JS_PROXY_TYPE, &non_proxy, gt); |
| 1181 // TODO(all): use csel here | 1181 // TODO(all): use csel here |
| 1182 __ Mov(x1, Operand(Smi::FromInt(0))); // Zero indicates proxy. | 1182 __ Mov(x1, Operand(Smi::FromInt(0))); // Zero indicates proxy. |
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| 5064 return previous_; | 5064 return previous_; |
| 5065 } | 5065 } |
| 5066 | 5066 |
| 5067 | 5067 |
| 5068 #undef __ | 5068 #undef __ |
| 5069 | 5069 |
| 5070 | 5070 |
| 5071 } } // namespace v8::internal | 5071 } } // namespace v8::internal |
| 5072 | 5072 |
| 5073 #endif // V8_TARGET_ARCH_A64 | 5073 #endif // V8_TARGET_ARCH_A64 |
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