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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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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235 enum HowToCode { | 235 enum HowToCode { |
236 kPlain = 0, // Straight pointer. | 236 kPlain = 0, // Straight pointer. |
237 // What this means depends on the architecture: | 237 // What this means depends on the architecture: |
238 kFromCode = 0x40, // A pointer inlined in code. | 238 kFromCode = 0x40, // A pointer inlined in code. |
239 kHowToCodeMask = 0x40 | 239 kHowToCodeMask = 0x40 |
240 }; | 240 }; |
241 | 241 |
242 // Where to point within the object. | 242 // Where to point within the object. |
243 enum WhereToPoint { | 243 enum WhereToPoint { |
244 kStartOfObject = 0, | 244 kStartOfObject = 0, |
245 kFirstInstruction = 0x80, | 245 kInnerPointer = 0x80, // First insn in code object or payload of cell. |
246 kWhereToPointMask = 0x80 | 246 kWhereToPointMask = 0x80 |
247 }; | 247 }; |
248 | 248 |
249 // Misc. | 249 // Misc. |
250 // Raw data to be copied from the snapshot. | 250 // Raw data to be copied from the snapshot. |
251 static const int kRawData = 0x30; | 251 static const int kRawData = 0x30; |
252 // Some common raw lengths: 0x31-0x3f | 252 // Some common raw lengths: 0x31-0x3f |
253 // A tag emitted at strategic points in the snapshot to delineate sections. | 253 // A tag emitted at strategic points in the snapshot to delineate sections. |
254 // If the deserializer does not find these at the expected moments then it | 254 // If the deserializer does not find these at the expected moments then it |
255 // is an indication that the snapshot and the VM do not fit together. | 255 // is an indication that the snapshot and the VM do not fit together. |
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642 private: | 642 private: |
643 virtual bool ShouldBeInThePartialSnapshotCache(HeapObject* o) { | 643 virtual bool ShouldBeInThePartialSnapshotCache(HeapObject* o) { |
644 return false; | 644 return false; |
645 } | 645 } |
646 }; | 646 }; |
647 | 647 |
648 | 648 |
649 } } // namespace v8::internal | 649 } } // namespace v8::internal |
650 | 650 |
651 #endif // V8_SERIALIZE_H_ | 651 #endif // V8_SERIALIZE_H_ |
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