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| 1 // Copyright (c) 1994-2006 Sun Microsystems Inc. | 1 // Copyright (c) 1994-2006 Sun Microsystems Inc. |
| 2 // All Rights Reserved. | 2 // All Rights Reserved. |
| 3 // | 3 // |
| 4 // Redistribution and use in source and binary forms, with or without | 4 // Redistribution and use in source and binary forms, with or without |
| 5 // modification, are permitted provided that the following conditions are | 5 // modification, are permitted provided that the following conditions are |
| 6 // met: | 6 // met: |
| 7 // | 7 // |
| 8 // - Redistributions of source code must retain the above copyright notice, | 8 // - Redistributions of source code must retain the above copyright notice, |
| 9 // this list of conditions and the following disclaimer. | 9 // this list of conditions and the following disclaimer. |
| 10 // | 10 // |
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| 167 // location of a stack frame as close as possible. The "statement position" is | 167 // location of a stack frame as close as possible. The "statement position" is |
| 168 // collected at the beginning at each statement, and is used to indicate | 168 // collected at the beginning at each statement, and is used to indicate |
| 169 // possible break locations. kNoPosition is used to indicate an | 169 // possible break locations. kNoPosition is used to indicate an |
| 170 // invalid/uninitialized position value. | 170 // invalid/uninitialized position value. |
| 171 static const int kNoPosition = -1; | 171 static const int kNoPosition = -1; |
| 172 | 172 |
| 173 // This string is used to add padding comments to the reloc info in cases | 173 // This string is used to add padding comments to the reloc info in cases |
| 174 // where we are not sure to have enough space for patching in during | 174 // where we are not sure to have enough space for patching in during |
| 175 // lazy deoptimization. This is the case if we have indirect calls for which | 175 // lazy deoptimization. This is the case if we have indirect calls for which |
| 176 // we do not normally record relocation info. | 176 // we do not normally record relocation info. |
| 177 static const char* kFillerCommentString; | 177 static const char* const kFillerCommentString; |
| 178 | 178 |
| 179 // The minimum size of a comment is equal to three bytes for the extra tagged | 179 // The minimum size of a comment is equal to three bytes for the extra tagged |
| 180 // pc + the tag for the data, and kPointerSize for the actual pointer to the | 180 // pc + the tag for the data, and kPointerSize for the actual pointer to the |
| 181 // comment. | 181 // comment. |
| 182 static const int kMinRelocCommentSize = 3 + kPointerSize; | 182 static const int kMinRelocCommentSize = 3 + kPointerSize; |
| 183 | 183 |
| 184 // The maximum size for a call instruction including pc-jump. | 184 // The maximum size for a call instruction including pc-jump. |
| 185 static const int kMaxCallSize = 6; | 185 static const int kMaxCallSize = 6; |
| 186 | 186 |
| 187 // The maximum pc delta that will use the short encoding. | 187 // The maximum pc delta that will use the short encoding. |
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| 868 public: | 868 public: |
| 869 NullCallWrapper() { } | 869 NullCallWrapper() { } |
| 870 virtual ~NullCallWrapper() { } | 870 virtual ~NullCallWrapper() { } |
| 871 virtual void BeforeCall(int call_size) const { } | 871 virtual void BeforeCall(int call_size) const { } |
| 872 virtual void AfterCall() const { } | 872 virtual void AfterCall() const { } |
| 873 }; | 873 }; |
| 874 | 874 |
| 875 } } // namespace v8::internal | 875 } } // namespace v8::internal |
| 876 | 876 |
| 877 #endif // V8_ASSEMBLER_H_ | 877 #endif // V8_ASSEMBLER_H_ |
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