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Issue 7058009: Make InToSpace/InFromSpace use the page header. (Closed) Base URL: https://v8.googlecode.com/svn/branches/experimental/gc
Patch Set: Addressed review comments. Created 9 years, 7 months ago
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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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79 Register scratch, 79 Register scratch,
80 SaveFPRegsMode save_fp); 80 SaveFPRegsMode save_fp);
81 81
82 template<typename LabelType> 82 template<typename LabelType>
83 void CheckPageFlag(Register object, 83 void CheckPageFlag(Register object,
84 Register scratch, 84 Register scratch,
85 MemoryChunk::MemoryChunkFlags flag, 85 MemoryChunk::MemoryChunkFlags flag,
86 Condition cc, 86 Condition cc,
87 LabelType* condition_met); 87 LabelType* condition_met);
88 88
89 template<typename LabelType>
90 void InNewSpace(Register object,
91 Register scratch,
92 Condition cc,
93 LabelType* condition_met);
94
89 // Check if an object has a given incremental marking colour. Also uses ecx! 95 // Check if an object has a given incremental marking colour. Also uses ecx!
90 // The colour bits are found by splitting the address at the bit offset 96 // The colour bits are found by splitting the address at the bit offset
91 // indicated by the mask: bits that are zero in the mask are used for the 97 // indicated by the mask: bits that are zero in the mask are used for the
92 // address of the bitmap, and bits that are one in the mask are used for the 98 // address of the bitmap, and bits that are one in the mask are used for the
93 // index of the bit. 99 // index of the bit.
94 template <typename LabelType> 100 template <typename LabelType>
95 void HasColour(Register object, 101 void HasColour(Register object,
96 Register scratch0, 102 Register scratch0,
97 Register scratch1, 103 Register scratch1,
98 LabelType* has_colour, 104 LabelType* has_colour,
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855 } \ 861 } \
856 masm-> 862 masm->
857 #else 863 #else
858 #define ACCESS_MASM(masm) masm-> 864 #define ACCESS_MASM(masm) masm->
859 #endif 865 #endif
860 866
861 867
862 } } // namespace v8::internal 868 } } // namespace v8::internal
863 869
864 #endif // V8_IA32_MACRO_ASSEMBLER_IA32_H_ 870 #endif // V8_IA32_MACRO_ASSEMBLER_IA32_H_
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