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1 // Copyright 2006-2009 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 |
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52 class JumpTarget; | 52 class JumpTarget; |
53 | 53 |
54 // MacroAssembler implements a collection of frequently used macros. | 54 // MacroAssembler implements a collection of frequently used macros. |
55 class MacroAssembler: public Assembler { | 55 class MacroAssembler: public Assembler { |
56 public: | 56 public: |
57 MacroAssembler(void* buffer, int size); | 57 MacroAssembler(void* buffer, int size); |
58 | 58 |
59 // --------------------------------------------------------------------------- | 59 // --------------------------------------------------------------------------- |
60 // GC Support | 60 // GC Support |
61 | 61 |
62 // Set the remebered set bit for an address which points into an | 62 // For page containing |object| mark region covering |addr| dirty. |
63 // object. RecordWriteHelper only works if the object is not in new | 63 // RecordWriteHelper only works if the object is not in new |
64 // space. | 64 // space. |
65 void RecordWriteHelper(Register object, | 65 void RecordWriteHelper(Register object, |
66 Register addr, | 66 Register addr, |
67 Register scratch); | 67 Register scratch); |
68 | 68 |
69 // Check if object is in new space. | 69 // Check if object is in new space. |
70 // scratch can be object itself, but it will be clobbered. | 70 // scratch can be object itself, but it will be clobbered. |
71 void InNewSpace(Register object, | 71 void InNewSpace(Register object, |
72 Register scratch, | 72 Register scratch, |
73 Condition cc, // equal for new space, not_equal otherwise. | 73 Condition cc, // equal for new space, not_equal otherwise. |
74 Label* branch); | 74 Label* branch); |
75 | 75 |
76 // Set the remembered set bit for [object+offset]. | 76 // For page containing |object| mark region covering [object+offset] dirty. |
77 // object is the object being stored into, value is the object being stored. | 77 // object is the object being stored into, value is the object being stored. |
78 // If offset is zero, then the scratch register contains the array index into | 78 // If offset is zero, then the scratch register contains the array index into |
79 // the elements array represented as a Smi. | 79 // the elements array represented as a Smi. |
80 // All registers are clobbered by the operation. | 80 // All registers are clobbered by the operation. |
81 void RecordWrite(Register object, | 81 void RecordWrite(Register object, |
82 int offset, | 82 int offset, |
83 Register value, | 83 Register value, |
84 Register scratch); | 84 Register scratch); |
85 | 85 |
86 #ifdef ENABLE_DEBUGGER_SUPPORT | 86 #ifdef ENABLE_DEBUGGER_SUPPORT |
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596 } \ | 596 } \ |
597 masm-> | 597 masm-> |
598 #else | 598 #else |
599 #define ACCESS_MASM(masm) masm-> | 599 #define ACCESS_MASM(masm) masm-> |
600 #endif | 600 #endif |
601 | 601 |
602 | 602 |
603 } } // namespace v8::internal | 603 } } // namespace v8::internal |
604 | 604 |
605 #endif // V8_IA32_MACRO_ASSEMBLER_IA32_H_ | 605 #endif // V8_IA32_MACRO_ASSEMBLER_IA32_H_ |
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