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Issue 6372013: Revert "Reapply change to with/arguments interaction." (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 9 years, 11 months ago
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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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105 __ bind(&gc); 105 __ bind(&gc);
106 __ LoadRoot(r4, Heap::kFalseValueRootIndex); 106 __ LoadRoot(r4, Heap::kFalseValueRootIndex);
107 __ Push(cp, r3, r4); 107 __ Push(cp, r3, r4);
108 __ TailCallRuntime(Runtime::kNewClosure, 3, 1); 108 __ TailCallRuntime(Runtime::kNewClosure, 3, 1);
109 } 109 }
110 110
111 111
112 void FastNewContextStub::Generate(MacroAssembler* masm) { 112 void FastNewContextStub::Generate(MacroAssembler* masm) {
113 // Try to allocate the context in new space. 113 // Try to allocate the context in new space.
114 Label gc; 114 Label gc;
115 int length = slots_ + Context::MIN_CONTEXT_SLOTS;
115 116
116 // Attempt to allocate the context in new space. 117 // Attempt to allocate the context in new space.
117 __ AllocateInNewSpace(FixedArray::SizeFor(slots_), 118 __ AllocateInNewSpace(FixedArray::SizeFor(length),
118 r0, 119 r0,
119 r1, 120 r1,
120 r2, 121 r2,
121 &gc, 122 &gc,
122 TAG_OBJECT); 123 TAG_OBJECT);
123 124
124 // Load the function from the stack. 125 // Load the function from the stack.
125 __ ldr(r3, MemOperand(sp, 0)); 126 __ ldr(r3, MemOperand(sp, 0));
126 127
127 // Setup the object header. 128 // Setup the object header.
128 __ LoadRoot(r2, Heap::kContextMapRootIndex); 129 __ LoadRoot(r2, Heap::kContextMapRootIndex);
129 __ str(r2, FieldMemOperand(r0, HeapObject::kMapOffset)); 130 __ str(r2, FieldMemOperand(r0, HeapObject::kMapOffset));
130 __ mov(r2, Operand(Smi::FromInt(slots_))); 131 __ mov(r2, Operand(Smi::FromInt(length)));
131 __ str(r2, FieldMemOperand(r0, FixedArray::kLengthOffset)); 132 __ str(r2, FieldMemOperand(r0, FixedArray::kLengthOffset));
132 133
133 // Setup the fixed slots. 134 // Setup the fixed slots.
134 __ mov(r1, Operand(Smi::FromInt(0))); 135 __ mov(r1, Operand(Smi::FromInt(0)));
135 __ str(r3, MemOperand(r0, Context::SlotOffset(Context::CLOSURE_INDEX))); 136 __ str(r3, MemOperand(r0, Context::SlotOffset(Context::CLOSURE_INDEX)));
136 __ str(r0, MemOperand(r0, Context::SlotOffset(Context::FCONTEXT_INDEX))); 137 __ str(r0, MemOperand(r0, Context::SlotOffset(Context::FCONTEXT_INDEX)));
137 __ str(r1, MemOperand(r0, Context::SlotOffset(Context::PREVIOUS_INDEX))); 138 __ str(r1, MemOperand(r0, Context::SlotOffset(Context::PREVIOUS_INDEX)));
138 __ str(r1, MemOperand(r0, Context::SlotOffset(Context::EXTENSION_INDEX))); 139 __ str(r1, MemOperand(r0, Context::SlotOffset(Context::EXTENSION_INDEX)));
139 140
140 // Copy the global object from the surrounding context. 141 // Copy the global object from the surrounding context.
141 __ ldr(r1, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX))); 142 __ ldr(r1, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX)));
142 __ str(r1, MemOperand(r0, Context::SlotOffset(Context::GLOBAL_INDEX))); 143 __ str(r1, MemOperand(r0, Context::SlotOffset(Context::GLOBAL_INDEX)));
143 144
144 // Initialize the rest of the slots to undefined. 145 // Initialize the rest of the slots to undefined.
145 __ LoadRoot(r1, Heap::kUndefinedValueRootIndex); 146 __ LoadRoot(r1, Heap::kUndefinedValueRootIndex);
146 for (int i = Context::MIN_CONTEXT_SLOTS; i < slots_; i++) { 147 for (int i = Context::MIN_CONTEXT_SLOTS; i < length; i++) {
147 __ str(r1, MemOperand(r0, Context::SlotOffset(i))); 148 __ str(r1, MemOperand(r0, Context::SlotOffset(i)));
148 } 149 }
149 150
150 // Remove the on-stack argument and return. 151 // Remove the on-stack argument and return.
151 __ mov(cp, r0); 152 __ mov(cp, r0);
152 __ pop(); 153 __ pop();
153 __ Ret(); 154 __ Ret();
154 155
155 // Need to collect. Call into runtime system. 156 // Need to collect. Call into runtime system.
156 __ bind(&gc); 157 __ bind(&gc);
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5086 __ pop(r1); 5087 __ pop(r1);
5087 __ Jump(r2); 5088 __ Jump(r2);
5088 } 5089 }
5089 5090
5090 5091
5091 #undef __ 5092 #undef __
5092 5093
5093 } } // namespace v8::internal 5094 } } // namespace v8::internal
5094 5095
5095 #endif // V8_TARGET_ARCH_ARM 5096 #endif // V8_TARGET_ARCH_ARM
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