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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2009 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 |
11 // with the distribution. | 11 // with the distribution. |
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126 | 126 |
127 // Now allocate the JSObject on the heap. | 127 // Now allocate the JSObject on the heap. |
128 // edi: constructor | 128 // edi: constructor |
129 // eax: initial map | 129 // eax: initial map |
130 __ movzx_b(edi, FieldOperand(eax, Map::kInstanceSizeOffset)); | 130 __ movzx_b(edi, FieldOperand(eax, Map::kInstanceSizeOffset)); |
131 __ shl(edi, kPointerSizeLog2); | 131 __ shl(edi, kPointerSizeLog2); |
132 // Make sure that the maximum heap object size will never cause us | 132 // Make sure that the maximum heap object size will never cause us |
133 // problem here, because it is always greater than the maximum | 133 // problem here, because it is always greater than the maximum |
134 // instance size that can be represented in a byte. | 134 // instance size that can be represented in a byte. |
135 ASSERT(Heap::MaxObjectSizeInPagedSpace() >= JSObject::kMaxInstanceSize); | 135 ASSERT(Heap::MaxObjectSizeInPagedSpace() >= JSObject::kMaxInstanceSize); |
136 __ AllocateObjectInNewSpace(edi, ebx, edi, no_reg, &rt_call, false); | 136 __ AllocateObjectInNewSpace(edi, |
| 137 ebx, |
| 138 edi, |
| 139 no_reg, |
| 140 &rt_call, |
| 141 NO_ALLOCATION_FLAGS); |
137 // Allocated the JSObject, now initialize the fields. | 142 // Allocated the JSObject, now initialize the fields. |
138 // eax: initial map | 143 // eax: initial map |
139 // ebx: JSObject | 144 // ebx: JSObject |
140 // edi: start of next object | 145 // edi: start of next object |
141 __ mov(Operand(ebx, JSObject::kMapOffset), eax); | 146 __ mov(Operand(ebx, JSObject::kMapOffset), eax); |
142 __ mov(ecx, Factory::empty_fixed_array()); | 147 __ mov(ecx, Factory::empty_fixed_array()); |
143 __ mov(Operand(ebx, JSObject::kPropertiesOffset), ecx); | 148 __ mov(Operand(ebx, JSObject::kPropertiesOffset), ecx); |
144 __ mov(Operand(ebx, JSObject::kElementsOffset), ecx); | 149 __ mov(Operand(ebx, JSObject::kElementsOffset), ecx); |
145 // Set extra fields in the newly allocated object. | 150 // Set extra fields in the newly allocated object. |
146 // eax: initial map | 151 // eax: initial map |
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190 // edx: number of elements in properties array | 195 // edx: number of elements in properties array |
191 ASSERT(Heap::MaxObjectSizeInPagedSpace() > | 196 ASSERT(Heap::MaxObjectSizeInPagedSpace() > |
192 (FixedArray::kHeaderSize + 255*kPointerSize)); | 197 (FixedArray::kHeaderSize + 255*kPointerSize)); |
193 __ AllocateObjectInNewSpace(FixedArray::kHeaderSize, | 198 __ AllocateObjectInNewSpace(FixedArray::kHeaderSize, |
194 times_pointer_size, | 199 times_pointer_size, |
195 edx, | 200 edx, |
196 edi, | 201 edi, |
197 ecx, | 202 ecx, |
198 no_reg, | 203 no_reg, |
199 &undo_allocation, | 204 &undo_allocation, |
200 true); | 205 RESULT_CONTAINS_TOP); |
201 | 206 |
202 // Initialize the FixedArray. | 207 // Initialize the FixedArray. |
203 // ebx: JSObject | 208 // ebx: JSObject |
204 // edi: FixedArray | 209 // edi: FixedArray |
205 // edx: number of elements | 210 // edx: number of elements |
206 // ecx: start of next object | 211 // ecx: start of next object |
207 __ mov(eax, Factory::fixed_array_map()); | 212 __ mov(eax, Factory::fixed_array_map()); |
208 __ mov(Operand(edi, JSObject::kMapOffset), eax); // setup the map | 213 __ mov(Operand(edi, JSObject::kMapOffset), eax); // setup the map |
209 __ mov(Operand(edi, Array::kLengthOffset), edx); // and length | 214 __ mov(Operand(edi, Array::kLengthOffset), edx); // and length |
210 | 215 |
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238 | 243 |
239 // Undo the setting of the new top so that the heap is verifiable. For | 244 // Undo the setting of the new top so that the heap is verifiable. For |
240 // example, the map's unused properties potentially do not match the | 245 // example, the map's unused properties potentially do not match the |
241 // allocated objects unused properties. | 246 // allocated objects unused properties. |
242 // ebx: JSObject (previous new top) | 247 // ebx: JSObject (previous new top) |
243 __ bind(&undo_allocation); | 248 __ bind(&undo_allocation); |
244 __ UndoAllocationInNewSpace(ebx); | 249 __ UndoAllocationInNewSpace(ebx); |
245 } | 250 } |
246 | 251 |
247 // Allocate the new receiver object using the runtime call. | 252 // Allocate the new receiver object using the runtime call. |
248 // edi: function (constructor) | |
249 __ bind(&rt_call); | 253 __ bind(&rt_call); |
250 // Must restore edi (constructor) before calling runtime. | 254 // Must restore edi (constructor) before calling runtime. |
251 __ mov(edi, Operand(esp, 0)); | 255 __ mov(edi, Operand(esp, 0)); |
| 256 // edi: function (constructor) |
252 __ push(edi); | 257 __ push(edi); |
253 __ CallRuntime(Runtime::kNewObject, 1); | 258 __ CallRuntime(Runtime::kNewObject, 1); |
254 __ mov(ebx, Operand(eax)); // store result in ebx | 259 __ mov(ebx, Operand(eax)); // store result in ebx |
255 | 260 |
256 // New object allocated. | 261 // New object allocated. |
257 // ebx: newly allocated object | 262 // ebx: newly allocated object |
258 __ bind(&allocated); | 263 __ bind(&allocated); |
259 // Retrieve the function from the stack. | 264 // Retrieve the function from the stack. |
260 __ pop(edi); | 265 __ pop(edi); |
261 | 266 |
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769 // Dont adapt arguments. | 774 // Dont adapt arguments. |
770 // ------------------------------------------- | 775 // ------------------------------------------- |
771 __ bind(&dont_adapt_arguments); | 776 __ bind(&dont_adapt_arguments); |
772 __ jmp(Operand(edx)); | 777 __ jmp(Operand(edx)); |
773 } | 778 } |
774 | 779 |
775 | 780 |
776 #undef __ | 781 #undef __ |
777 | 782 |
778 } } // namespace v8::internal | 783 } } // namespace v8::internal |
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