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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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84 __ push(edx); 84 __ push(edx);
85 __ push(Immediate(Factory::false_value())); 85 __ push(Immediate(Factory::false_value()));
86 __ push(ecx); // Restore return address. 86 __ push(ecx); // Restore return address.
87 __ TailCallRuntime(Runtime::kNewClosure, 3, 1); 87 __ TailCallRuntime(Runtime::kNewClosure, 3, 1);
88 } 88 }
89 89
90 90
91 void FastNewContextStub::Generate(MacroAssembler* masm) { 91 void FastNewContextStub::Generate(MacroAssembler* masm) {
92 // Try to allocate the context in new space. 92 // Try to allocate the context in new space.
93 Label gc; 93 Label gc;
94 __ AllocateInNewSpace((slots_ * kPointerSize) + FixedArray::kHeaderSize, 94 int length = slots_ + Context::MIN_CONTEXT_SLOTS;
95 __ AllocateInNewSpace((length * kPointerSize) + FixedArray::kHeaderSize,
95 eax, ebx, ecx, &gc, TAG_OBJECT); 96 eax, ebx, ecx, &gc, TAG_OBJECT);
96 97
97 // Get the function from the stack. 98 // Get the function from the stack.
98 __ mov(ecx, Operand(esp, 1 * kPointerSize)); 99 __ mov(ecx, Operand(esp, 1 * kPointerSize));
99 100
100 // Setup the object header. 101 // Setup the object header.
101 __ mov(FieldOperand(eax, HeapObject::kMapOffset), Factory::context_map()); 102 __ mov(FieldOperand(eax, HeapObject::kMapOffset), Factory::context_map());
102 __ mov(FieldOperand(eax, Context::kLengthOffset), 103 __ mov(FieldOperand(eax, Context::kLengthOffset),
103 Immediate(Smi::FromInt(slots_))); 104 Immediate(Smi::FromInt(length)));
104 105
105 // Setup the fixed slots. 106 // Setup the fixed slots.
106 __ Set(ebx, Immediate(0)); // Set to NULL. 107 __ Set(ebx, Immediate(0)); // Set to NULL.
107 __ mov(Operand(eax, Context::SlotOffset(Context::CLOSURE_INDEX)), ecx); 108 __ mov(Operand(eax, Context::SlotOffset(Context::CLOSURE_INDEX)), ecx);
108 __ mov(Operand(eax, Context::SlotOffset(Context::FCONTEXT_INDEX)), eax); 109 __ mov(Operand(eax, Context::SlotOffset(Context::FCONTEXT_INDEX)), eax);
109 __ mov(Operand(eax, Context::SlotOffset(Context::PREVIOUS_INDEX)), ebx); 110 __ mov(Operand(eax, Context::SlotOffset(Context::PREVIOUS_INDEX)), ebx);
110 __ mov(Operand(eax, Context::SlotOffset(Context::EXTENSION_INDEX)), ebx); 111 __ mov(Operand(eax, Context::SlotOffset(Context::EXTENSION_INDEX)), ebx);
111 112
112 // Copy the global object from the surrounding context. We go through the 113 // Copy the global object from the surrounding context. We go through the
113 // context in the function (ecx) to match the allocation behavior we have 114 // context in the function (ecx) to match the allocation behavior we have
114 // in the runtime system (see Heap::AllocateFunctionContext). 115 // in the runtime system (see Heap::AllocateFunctionContext).
115 __ mov(ebx, FieldOperand(ecx, JSFunction::kContextOffset)); 116 __ mov(ebx, FieldOperand(ecx, JSFunction::kContextOffset));
116 __ mov(ebx, Operand(ebx, Context::SlotOffset(Context::GLOBAL_INDEX))); 117 __ mov(ebx, Operand(ebx, Context::SlotOffset(Context::GLOBAL_INDEX)));
117 __ mov(Operand(eax, Context::SlotOffset(Context::GLOBAL_INDEX)), ebx); 118 __ mov(Operand(eax, Context::SlotOffset(Context::GLOBAL_INDEX)), ebx);
118 119
119 // Initialize the rest of the slots to undefined. 120 // Initialize the rest of the slots to undefined.
120 __ mov(ebx, Factory::undefined_value()); 121 __ mov(ebx, Factory::undefined_value());
121 for (int i = Context::MIN_CONTEXT_SLOTS; i < slots_; i++) { 122 for (int i = Context::MIN_CONTEXT_SLOTS; i < length; i++) {
122 __ mov(Operand(eax, Context::SlotOffset(i)), ebx); 123 __ mov(Operand(eax, Context::SlotOffset(i)), ebx);
123 } 124 }
124 125
125 // Return and remove the on-stack parameter. 126 // Return and remove the on-stack parameter.
126 __ mov(esi, Operand(eax)); 127 __ mov(esi, Operand(eax));
127 __ ret(1 * kPointerSize); 128 __ ret(1 * kPointerSize);
128 129
129 // Need to collect. Call into runtime system. 130 // Need to collect. Call into runtime system.
130 __ bind(&gc); 131 __ bind(&gc);
131 __ TailCallRuntime(Runtime::kNewContext, 1, 1); 132 __ TailCallRuntime(Runtime::kNewContext, 1, 1);
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6482 // Do a tail call to the rewritten stub. 6483 // Do a tail call to the rewritten stub.
6483 __ jmp(Operand(edi)); 6484 __ jmp(Operand(edi));
6484 } 6485 }
6485 6486
6486 6487
6487 #undef __ 6488 #undef __
6488 6489
6489 } } // namespace v8::internal 6490 } } // namespace v8::internal
6490 6491
6491 #endif // V8_TARGET_ARCH_IA32 6492 #endif // V8_TARGET_ARCH_IA32
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