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1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 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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570 Label* fail, | 570 Label* fail, |
571 bool is_heap_object); | 571 bool is_heap_object); |
572 | 572 |
573 void CheckMap(Register obj, | 573 void CheckMap(Register obj, |
574 Register scratch, | 574 Register scratch, |
575 Heap::RootListIndex index, | 575 Heap::RootListIndex index, |
576 Label* fail, | 576 Label* fail, |
577 bool is_heap_object); | 577 bool is_heap_object); |
578 | 578 |
579 | 579 |
| 580 // Compare the object in a register to a value from the root list. |
| 581 // Uses the ip register as scratch. |
| 582 void CompareRoot(Register obj, Heap::RootListIndex index); |
| 583 |
| 584 |
580 // Load and check the instance type of an object for being a string. | 585 // Load and check the instance type of an object for being a string. |
581 // Loads the type into the second argument register. | 586 // Loads the type into the second argument register. |
582 // Returns a condition that will be enabled if the object was a string. | 587 // Returns a condition that will be enabled if the object was a string. |
583 Condition IsObjectStringType(Register obj, | 588 Condition IsObjectStringType(Register obj, |
584 Register type) { | 589 Register type) { |
585 ldr(type, FieldMemOperand(obj, HeapObject::kMapOffset)); | 590 ldr(type, FieldMemOperand(obj, HeapObject::kMapOffset)); |
586 ldrb(type, FieldMemOperand(type, Map::kInstanceTypeOffset)); | 591 ldrb(type, FieldMemOperand(type, Map::kInstanceTypeOffset)); |
587 tst(type, Operand(kIsNotStringMask)); | 592 tst(type, Operand(kIsNotStringMask)); |
588 ASSERT_EQ(0, kStringTag); | 593 ASSERT_EQ(0, kStringTag); |
589 return eq; | 594 return eq; |
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1006 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__) | 1011 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__) |
1007 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm-> | 1012 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm-> |
1008 #else | 1013 #else |
1009 #define ACCESS_MASM(masm) masm-> | 1014 #define ACCESS_MASM(masm) masm-> |
1010 #endif | 1015 #endif |
1011 | 1016 |
1012 | 1017 |
1013 } } // namespace v8::internal | 1018 } } // namespace v8::internal |
1014 | 1019 |
1015 #endif // V8_ARM_MACRO_ASSEMBLER_ARM_H_ | 1020 #endif // V8_ARM_MACRO_ASSEMBLER_ARM_H_ |
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