| //===----- ObjectHeader.h - Macros for describing an object header --------===// |
| // |
| // The VMKit project |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef MVM_OBJECT_HEADER_H |
| #define MVM_OBJECT_HEADER_H |
| |
| #include <stdint.h> |
| |
| namespace mvm { |
| #if (__WORDSIZE == 64) |
| static const uint64_t FatMask = 0x8000000000000000; |
| #else |
| static const uint64_t FatMask = 0x80000000; |
| #endif |
| |
| static const uint64_t ThinCountMask = 0xFF000; |
| static const uint64_t ThinCountShift = 12; |
| static const uint64_t ThinCountAdd = 0x1000; |
| |
| static const uint64_t NonLockBitsMask = 0xFFF; |
| static const uint64_t HashMask = 0xFF0; |
| static const uint64_t GCBitMask = 0xF; |
| |
| static const uint32_t NonLockBits = 12; |
| static const uint32_t HashBits = 0; |
| static const uint32_t GCBits = 4; |
| |
| static const bool MovesObject = false; |
| } |
| |
| #endif // MVM_OBJECT_HEADER_H |
