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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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| 5591 // strings are ascii the result is an ascii cons string. | 5591 // strings are ascii the result is an ascii cons string. |
| 5592 Label non_ascii, allocated, ascii_data; | 5592 Label non_ascii, allocated, ascii_data; |
| 5593 __ mov(edi, FieldOperand(eax, HeapObject::kMapOffset)); | 5593 __ mov(edi, FieldOperand(eax, HeapObject::kMapOffset)); |
| 5594 __ movzx_b(ecx, FieldOperand(edi, Map::kInstanceTypeOffset)); | 5594 __ movzx_b(ecx, FieldOperand(edi, Map::kInstanceTypeOffset)); |
| 5595 __ mov(edi, FieldOperand(edx, HeapObject::kMapOffset)); | 5595 __ mov(edi, FieldOperand(edx, HeapObject::kMapOffset)); |
| 5596 __ movzx_b(edi, FieldOperand(edi, Map::kInstanceTypeOffset)); | 5596 __ movzx_b(edi, FieldOperand(edi, Map::kInstanceTypeOffset)); |
| 5597 __ and_(ecx, edi); | 5597 __ and_(ecx, edi); |
| 5598 STATIC_ASSERT((kStringEncodingMask & kAsciiStringTag) != 0); | 5598 STATIC_ASSERT((kStringEncodingMask & kAsciiStringTag) != 0); |
| 5599 STATIC_ASSERT((kStringEncodingMask & kTwoByteStringTag) == 0); | 5599 STATIC_ASSERT((kStringEncodingMask & kTwoByteStringTag) == 0); |
| 5600 __ test(ecx, Immediate(kStringEncodingMask)); | 5600 __ test(ecx, Immediate(kStringEncodingMask)); |
| 5601 __ j(zero, &non_ascii, Label::kNear); | 5601 __ j(zero, &non_ascii); |
| 5602 __ bind(&ascii_data); | 5602 __ bind(&ascii_data); |
| 5603 // Allocate an acsii cons string. | 5603 // Allocate an acsii cons string. |
| 5604 __ AllocateAsciiConsString(ecx, edi, no_reg, &call_runtime); | 5604 __ AllocateAsciiConsString(ecx, edi, no_reg, &call_runtime); |
| 5605 __ bind(&allocated); | 5605 __ bind(&allocated); |
| 5606 // Fill the fields of the cons string. | 5606 // Fill the fields of the cons string. |
| 5607 if (FLAG_debug_code) __ AbortIfNotSmi(ebx); | 5607 if (FLAG_debug_code) __ AbortIfNotSmi(ebx); |
| 5608 __ mov(FieldOperand(ecx, ConsString::kLengthOffset), ebx); | 5608 __ mov(FieldOperand(ecx, ConsString::kLengthOffset), ebx); |
| 5609 __ mov(FieldOperand(ecx, ConsString::kHashFieldOffset), | 5609 __ mov(FieldOperand(ecx, ConsString::kHashFieldOffset), |
| 5610 Immediate(String::kEmptyHashField)); | 5610 Immediate(String::kEmptyHashField)); |
| 5611 __ mov(FieldOperand(ecx, ConsString::kFirstOffset), eax); | 5611 __ mov(FieldOperand(ecx, ConsString::kFirstOffset), eax); |
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| 7335 false); | 7335 false); |
| 7336 __ pop(edx); | 7336 __ pop(edx); |
| 7337 __ ret(0); | 7337 __ ret(0); |
| 7338 } | 7338 } |
| 7339 | 7339 |
| 7340 #undef __ | 7340 #undef __ |
| 7341 | 7341 |
| 7342 } } // namespace v8::internal | 7342 } } // namespace v8::internal |
| 7343 | 7343 |
| 7344 #endif // V8_TARGET_ARCH_IA32 | 7344 #endif // V8_TARGET_ARCH_IA32 |
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