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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 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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106 __ j(equal, &rt_call); | 106 __ j(equal, &rt_call); |
107 | 107 |
108 // Now allocate the JSObject on the heap. | 108 // Now allocate the JSObject on the heap. |
109 // edi: constructor | 109 // edi: constructor |
110 // eax: initial map | 110 // eax: initial map |
111 __ movzx_b(edi, FieldOperand(eax, Map::kInstanceSizeOffset)); | 111 __ movzx_b(edi, FieldOperand(eax, Map::kInstanceSizeOffset)); |
112 __ shl(edi, kPointerSizeLog2); | 112 __ shl(edi, kPointerSizeLog2); |
113 // Make sure that the maximum heap object size will never cause us | 113 // Make sure that the maximum heap object size will never cause us |
114 // problem here, because it is always greater than the maximum | 114 // problem here, because it is always greater than the maximum |
115 // instance size that can be represented in a byte. | 115 // instance size that can be represented in a byte. |
116 ASSERT(Heap::MaxHeapObjectSize() >= (1 << kBitsPerByte)); | 116 ASSERT(Heap::MaxObjectSizeInPagedSpace() >= (1 << kBitsPerByte)); |
117 ExternalReference new_space_allocation_top = | 117 ExternalReference new_space_allocation_top = |
118 ExternalReference::new_space_allocation_top_address(); | 118 ExternalReference::new_space_allocation_top_address(); |
119 __ mov(ebx, Operand::StaticVariable(new_space_allocation_top)); | 119 __ mov(ebx, Operand::StaticVariable(new_space_allocation_top)); |
120 __ add(edi, Operand(ebx)); // Calculate new top | 120 __ add(edi, Operand(ebx)); // Calculate new top |
121 ExternalReference new_space_allocation_limit = | 121 ExternalReference new_space_allocation_limit = |
122 ExternalReference::new_space_allocation_limit_address(); | 122 ExternalReference::new_space_allocation_limit_address(); |
123 __ cmp(edi, Operand::StaticVariable(new_space_allocation_limit)); | 123 __ cmp(edi, Operand::StaticVariable(new_space_allocation_limit)); |
124 __ j(greater_equal, &rt_call); | 124 __ j(greater_equal, &rt_call); |
125 // Allocated the JSObject, now initialize the fields. | 125 // Allocated the JSObject, now initialize the fields. |
126 // eax: initial map | 126 // eax: initial map |
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168 __ test(edx, Operand(edx)); | 168 __ test(edx, Operand(edx)); |
169 // Done if no extra properties are to be allocated. | 169 // Done if no extra properties are to be allocated. |
170 __ j(zero, &allocated); | 170 __ j(zero, &allocated); |
171 | 171 |
172 // Scale the number of elements by pointer size and add the header for | 172 // Scale the number of elements by pointer size and add the header for |
173 // FixedArrays to the start of the next object calculation from above. | 173 // FixedArrays to the start of the next object calculation from above. |
174 // eax: initial map | 174 // eax: initial map |
175 // ebx: JSObject | 175 // ebx: JSObject |
176 // edi: start of next object (will be start of FixedArray) | 176 // edi: start of next object (will be start of FixedArray) |
177 // edx: number of elements in properties array | 177 // edx: number of elements in properties array |
178 ASSERT(Heap::MaxHeapObjectSize() > | 178 ASSERT(Heap::MaxObjectSizeInPagedSpace() > |
179 (FixedArray::kHeaderSize + 255*kPointerSize)); | 179 (FixedArray::kHeaderSize + 255*kPointerSize)); |
180 __ lea(ecx, Operand(edi, edx, times_4, FixedArray::kHeaderSize)); | 180 __ lea(ecx, Operand(edi, edx, times_4, FixedArray::kHeaderSize)); |
181 __ cmp(ecx, Operand::StaticVariable(new_space_allocation_limit)); | 181 __ cmp(ecx, Operand::StaticVariable(new_space_allocation_limit)); |
182 __ j(greater_equal, &undo_allocation); | 182 __ j(greater_equal, &undo_allocation); |
183 __ mov(Operand::StaticVariable(new_space_allocation_top), ecx); | 183 __ mov(Operand::StaticVariable(new_space_allocation_top), ecx); |
184 | 184 |
185 // Initialize the FixedArray. | 185 // Initialize the FixedArray. |
186 // ebx: JSObject | 186 // ebx: JSObject |
187 // edi: FixedArray | 187 // edi: FixedArray |
188 // edx: number of elements | 188 // edx: number of elements |
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762 // Dont adapt arguments. | 762 // Dont adapt arguments. |
763 // ------------------------------------------- | 763 // ------------------------------------------- |
764 __ bind(&dont_adapt_arguments); | 764 __ bind(&dont_adapt_arguments); |
765 __ jmp(Operand(edx)); | 765 __ jmp(Operand(edx)); |
766 } | 766 } |
767 | 767 |
768 | 768 |
769 #undef __ | 769 #undef __ |
770 | 770 |
771 } } // namespace v8::internal | 771 } } // namespace v8::internal |
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