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Issue 7003058: A collection of context-related refactoring changes. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 9 years, 6 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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151 r0, 151 r0,
152 r1, 152 r1,
153 r2, 153 r2,
154 &gc, 154 &gc,
155 TAG_OBJECT); 155 TAG_OBJECT);
156 156
157 // Load the function from the stack. 157 // Load the function from the stack.
158 __ ldr(r3, MemOperand(sp, 0)); 158 __ ldr(r3, MemOperand(sp, 0));
159 159
160 // Setup the object header. 160 // Setup the object header.
161 __ LoadRoot(r2, Heap::kContextMapRootIndex); 161 __ LoadRoot(r2, Heap::kFunctionContextMapRootIndex);
162 __ str(r2, FieldMemOperand(r0, HeapObject::kMapOffset)); 162 __ str(r2, FieldMemOperand(r0, HeapObject::kMapOffset));
163 __ mov(r2, Operand(Smi::FromInt(length))); 163 __ mov(r2, Operand(Smi::FromInt(length)));
164 __ str(r2, FieldMemOperand(r0, FixedArray::kLengthOffset)); 164 __ str(r2, FieldMemOperand(r0, FixedArray::kLengthOffset));
165 165
166 // Setup the fixed slots. 166 // Setup the fixed slots.
167 __ mov(r1, Operand(Smi::FromInt(0))); 167 __ mov(r1, Operand(Smi::FromInt(0)));
168 __ str(r3, MemOperand(r0, Context::SlotOffset(Context::CLOSURE_INDEX))); 168 __ str(r3, MemOperand(r0, Context::SlotOffset(Context::CLOSURE_INDEX)));
169 __ str(r0, MemOperand(r0, Context::SlotOffset(Context::FCONTEXT_INDEX))); 169 __ str(r0, MemOperand(r0, Context::SlotOffset(Context::FCONTEXT_INDEX)));
170 __ str(r1, MemOperand(r0, Context::SlotOffset(Context::PREVIOUS_INDEX))); 170 __ str(r1, MemOperand(r0, Context::SlotOffset(Context::PREVIOUS_INDEX)));
171 __ str(r1, MemOperand(r0, Context::SlotOffset(Context::EXTENSION_INDEX))); 171 __ str(r1, MemOperand(r0, Context::SlotOffset(Context::EXTENSION_INDEX)));
172 172
173 // Copy the global object from the surrounding context. 173 // Copy the global object from the surrounding context.
174 __ ldr(r1, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX))); 174 __ ldr(r1, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_INDEX)));
175 __ str(r1, MemOperand(r0, Context::SlotOffset(Context::GLOBAL_INDEX))); 175 __ str(r1, MemOperand(r0, Context::SlotOffset(Context::GLOBAL_INDEX)));
176 176
177 // Initialize the rest of the slots to undefined. 177 // Initialize the rest of the slots to undefined.
178 __ LoadRoot(r1, Heap::kUndefinedValueRootIndex); 178 __ LoadRoot(r1, Heap::kUndefinedValueRootIndex);
179 for (int i = Context::MIN_CONTEXT_SLOTS; i < length; i++) { 179 for (int i = Context::MIN_CONTEXT_SLOTS; i < length; i++) {
180 __ str(r1, MemOperand(r0, Context::SlotOffset(i))); 180 __ str(r1, MemOperand(r0, Context::SlotOffset(i)));
181 } 181 }
182 182
183 // Remove the on-stack argument and return. 183 // Remove the on-stack argument and return.
184 __ mov(cp, r0); 184 __ mov(cp, r0);
185 __ pop(); 185 __ pop();
186 __ Ret(); 186 __ Ret();
187 187
188 // Need to collect. Call into runtime system. 188 // Need to collect. Call into runtime system.
189 __ bind(&gc); 189 __ bind(&gc);
190 __ TailCallRuntime(Runtime::kNewContext, 1, 1); 190 __ TailCallRuntime(Runtime::kNewFunctionContext, 1, 1);
191 } 191 }
192 192
193 193
194 void FastCloneShallowArrayStub::Generate(MacroAssembler* masm) { 194 void FastCloneShallowArrayStub::Generate(MacroAssembler* masm) {
195 // Stack layout on entry: 195 // Stack layout on entry:
196 // 196 //
197 // [sp]: constant elements. 197 // [sp]: constant elements.
198 // [sp + kPointerSize]: literal index. 198 // [sp + kPointerSize]: literal index.
199 // [sp + (2 * kPointerSize)]: literals array. 199 // [sp + (2 * kPointerSize)]: literals array.
200 200
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6416 __ mov(result, Operand(0)); 6416 __ mov(result, Operand(0));
6417 __ Ret(); 6417 __ Ret();
6418 } 6418 }
6419 6419
6420 6420
6421 #undef __ 6421 #undef __
6422 6422
6423 } } // namespace v8::internal 6423 } } // namespace v8::internal
6424 6424
6425 #endif // V8_TARGET_ARCH_ARM 6425 #endif // V8_TARGET_ARCH_ARM
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