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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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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390 __ j(equal, &only_change_map); | 390 __ j(equal, &only_change_map); |
391 | 391 |
392 __ push(eax); | 392 __ push(eax); |
393 __ push(ebx); | 393 __ push(ebx); |
394 | 394 |
395 __ mov(edi, FieldOperand(edi, FixedArray::kLengthOffset)); | 395 __ mov(edi, FieldOperand(edi, FixedArray::kLengthOffset)); |
396 | 396 |
397 // Allocate new FixedDoubleArray. | 397 // Allocate new FixedDoubleArray. |
398 // edx: receiver | 398 // edx: receiver |
399 // edi: length of source FixedArray (smi-tagged) | 399 // edi: length of source FixedArray (smi-tagged) |
400 __ lea(esi, Operand(edi, times_4, FixedDoubleArray::kHeaderSize)); | 400 __ lea(esi, Operand(edi, |
| 401 times_4, |
| 402 FixedDoubleArray::kHeaderSize + kPointerSize)); |
401 __ AllocateInNewSpace(esi, eax, ebx, no_reg, &gc_required, TAG_OBJECT); | 403 __ AllocateInNewSpace(esi, eax, ebx, no_reg, &gc_required, TAG_OBJECT); |
402 | 404 |
| 405 Label aligned, aligned_done; |
| 406 __ test(eax, Immediate(kDoubleAlignmentMask - kHeapObjectTag)); |
| 407 __ j(zero, &aligned, Label::kNear); |
| 408 __ mov(FieldOperand(eax, 0), |
| 409 Immediate(masm->isolate()->factory()->one_pointer_filler_map())); |
| 410 __ add(eax, Immediate(kPointerSize)); |
| 411 __ jmp(&aligned_done); |
| 412 |
| 413 __ bind(&aligned); |
| 414 __ mov(Operand(eax, esi, times_1, -kPointerSize-1), |
| 415 Immediate(masm->isolate()->factory()->one_pointer_filler_map())); |
| 416 |
| 417 __ bind(&aligned_done); |
| 418 |
403 // eax: destination FixedDoubleArray | 419 // eax: destination FixedDoubleArray |
404 // edi: number of elements | 420 // edi: number of elements |
405 // edx: receiver | 421 // edx: receiver |
406 __ mov(FieldOperand(eax, HeapObject::kMapOffset), | 422 __ mov(FieldOperand(eax, HeapObject::kMapOffset), |
407 Immediate(masm->isolate()->factory()->fixed_double_array_map())); | 423 Immediate(masm->isolate()->factory()->fixed_double_array_map())); |
408 __ mov(FieldOperand(eax, FixedDoubleArray::kLengthOffset), edi); | 424 __ mov(FieldOperand(eax, FixedDoubleArray::kLengthOffset), edi); |
409 __ mov(esi, FieldOperand(edx, JSObject::kElementsOffset)); | 425 __ mov(esi, FieldOperand(edx, JSObject::kElementsOffset)); |
410 // Replace receiver's backing store with newly created FixedDoubleArray. | 426 // Replace receiver's backing store with newly created FixedDoubleArray. |
411 __ mov(FieldOperand(edx, JSObject::kElementsOffset), eax); | 427 __ mov(FieldOperand(edx, JSObject::kElementsOffset), eax); |
412 __ mov(ebx, eax); | 428 __ mov(ebx, eax); |
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737 times_1, | 753 times_1, |
738 SeqAsciiString::kHeaderSize)); | 754 SeqAsciiString::kHeaderSize)); |
739 __ bind(&done); | 755 __ bind(&done); |
740 } | 756 } |
741 | 757 |
742 #undef __ | 758 #undef __ |
743 | 759 |
744 } } // namespace v8::internal | 760 } } // namespace v8::internal |
745 | 761 |
746 #endif // V8_TARGET_ARCH_IA32 | 762 #endif // V8_TARGET_ARCH_IA32 |
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