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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(rdx); 84 __ push(rdx);
85 __ Push(Factory::false_value()); 85 __ Push(Factory::false_value());
86 __ push(rcx); // Restore return address. 86 __ push(rcx); // 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 rax, rbx, rcx, &gc, TAG_OBJECT); 96 rax, rbx, rcx, &gc, TAG_OBJECT);
96 97
97 // Get the function from the stack. 98 // Get the function from the stack.
98 __ movq(rcx, Operand(rsp, 1 * kPointerSize)); 99 __ movq(rcx, Operand(rsp, 1 * kPointerSize));
99 100
100 // Setup the object header. 101 // Setup the object header.
101 __ LoadRoot(kScratchRegister, Heap::kContextMapRootIndex); 102 __ LoadRoot(kScratchRegister, Heap::kContextMapRootIndex);
102 __ movq(FieldOperand(rax, HeapObject::kMapOffset), kScratchRegister); 103 __ movq(FieldOperand(rax, HeapObject::kMapOffset), kScratchRegister);
103 __ Move(FieldOperand(rax, FixedArray::kLengthOffset), Smi::FromInt(slots_)); 104 __ Move(FieldOperand(rax, FixedArray::kLengthOffset), Smi::FromInt(length));
104 105
105 // Setup the fixed slots. 106 // Setup the fixed slots.
106 __ Set(rbx, 0); // Set to NULL. 107 __ Set(rbx, 0); // Set to NULL.
107 __ movq(Operand(rax, Context::SlotOffset(Context::CLOSURE_INDEX)), rcx); 108 __ movq(Operand(rax, Context::SlotOffset(Context::CLOSURE_INDEX)), rcx);
108 __ movq(Operand(rax, Context::SlotOffset(Context::FCONTEXT_INDEX)), rax); 109 __ movq(Operand(rax, Context::SlotOffset(Context::FCONTEXT_INDEX)), rax);
109 __ movq(Operand(rax, Context::SlotOffset(Context::PREVIOUS_INDEX)), rbx); 110 __ movq(Operand(rax, Context::SlotOffset(Context::PREVIOUS_INDEX)), rbx);
110 __ movq(Operand(rax, Context::SlotOffset(Context::EXTENSION_INDEX)), rbx); 111 __ movq(Operand(rax, Context::SlotOffset(Context::EXTENSION_INDEX)), rbx);
111 112
112 // Copy the global object from the surrounding context. 113 // Copy the global object from the surrounding context.
113 __ movq(rbx, Operand(rsi, Context::SlotOffset(Context::GLOBAL_INDEX))); 114 __ movq(rbx, Operand(rsi, Context::SlotOffset(Context::GLOBAL_INDEX)));
114 __ movq(Operand(rax, Context::SlotOffset(Context::GLOBAL_INDEX)), rbx); 115 __ movq(Operand(rax, Context::SlotOffset(Context::GLOBAL_INDEX)), rbx);
115 116
116 // Initialize the rest of the slots to undefined. 117 // Initialize the rest of the slots to undefined.
117 __ LoadRoot(rbx, Heap::kUndefinedValueRootIndex); 118 __ LoadRoot(rbx, Heap::kUndefinedValueRootIndex);
118 for (int i = Context::MIN_CONTEXT_SLOTS; i < slots_; i++) { 119 for (int i = Context::MIN_CONTEXT_SLOTS; i < length; i++) {
119 __ movq(Operand(rax, Context::SlotOffset(i)), rbx); 120 __ movq(Operand(rax, Context::SlotOffset(i)), rbx);
120 } 121 }
121 122
122 // Return and remove the on-stack parameter. 123 // Return and remove the on-stack parameter.
123 __ movq(rsi, rax); 124 __ movq(rsi, rax);
124 __ ret(1 * kPointerSize); 125 __ ret(1 * kPointerSize);
125 126
126 // Need to collect. Call into runtime system. 127 // Need to collect. Call into runtime system.
127 __ bind(&gc); 128 __ bind(&gc);
128 __ TailCallRuntime(Runtime::kNewContext, 1, 1); 129 __ TailCallRuntime(Runtime::kNewContext, 1, 1);
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4389 4390
4390 // Do a tail call to the rewritten stub. 4391 // Do a tail call to the rewritten stub.
4391 __ jmp(rdi); 4392 __ jmp(rdi);
4392 } 4393 }
4393 4394
4394 #undef __ 4395 #undef __
4395 4396
4396 } } // namespace v8::internal 4397 } } // namespace v8::internal
4397 4398
4398 #endif // V8_TARGET_ARCH_X64 4399 #endif // V8_TARGET_ARCH_X64
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