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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 | 5 // modification, are permitted provided that the following conditions |
6 // are met: | 6 // are 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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155 | 155 |
156 // ----------------------------------------------------------------------------- | 156 // ----------------------------------------------------------------------------- |
157 // Implementation of RelocInfo | 157 // Implementation of RelocInfo |
158 | 158 |
159 | 159 |
160 const int RelocInfo::kApplyMask = | 160 const int RelocInfo::kApplyMask = |
161 RelocInfo::kCodeTargetMask | 1 << RelocInfo::RUNTIME_ENTRY | | 161 RelocInfo::kCodeTargetMask | 1 << RelocInfo::RUNTIME_ENTRY | |
162 1 << RelocInfo::JS_RETURN | 1 << RelocInfo::INTERNAL_REFERENCE; | 162 1 << RelocInfo::JS_RETURN | 1 << RelocInfo::INTERNAL_REFERENCE; |
163 | 163 |
164 | 164 |
| 165 bool RelocInfo::IsCodedSpecially() { |
| 166 // The deserializer needs to know whether a pointer is specially coded. Being |
| 167 // specially coded on IA32 means that it is a relative address, as used by |
| 168 // branch instructions. These are also the ones that need changing when a |
| 169 // code object moves. |
| 170 return (1 << rmode_) & kApplyMask; |
| 171 } |
| 172 |
| 173 |
165 void RelocInfo::PatchCode(byte* instructions, int instruction_count) { | 174 void RelocInfo::PatchCode(byte* instructions, int instruction_count) { |
166 // Patch the code at the current address with the supplied instructions. | 175 // Patch the code at the current address with the supplied instructions. |
167 for (int i = 0; i < instruction_count; i++) { | 176 for (int i = 0; i < instruction_count; i++) { |
168 *(pc_ + i) = *(instructions + i); | 177 *(pc_ + i) = *(instructions + i); |
169 } | 178 } |
170 | 179 |
171 // Indicate that code has changed. | 180 // Indicate that code has changed. |
172 CPU::FlushICache(pc_, instruction_count); | 181 CPU::FlushICache(pc_, instruction_count); |
173 } | 182 } |
174 | 183 |
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2532 fprintf(coverage_log, "%s\n", file_line); | 2541 fprintf(coverage_log, "%s\n", file_line); |
2533 fflush(coverage_log); | 2542 fflush(coverage_log); |
2534 } | 2543 } |
2535 } | 2544 } |
2536 | 2545 |
2537 #endif | 2546 #endif |
2538 | 2547 |
2539 } } // namespace v8::internal | 2548 } } // namespace v8::internal |
2540 | 2549 |
2541 #endif // V8_TARGET_ARCH_IA32 | 2550 #endif // V8_TARGET_ARCH_IA32 |
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