57 //
  58 //
  59 //   6                 4 4 4  4 4                                             0
  60 //   3                 7 6 5  2 1                                             0
  61 //  +-------------------+-+----+-----------------------------------------------+
  62 //  |00000000 00000000 0|0|1111|11 11111111 11111111 11111111 11111111 11111111|
  63 //  +-------------------+-+----+-----------------------------------------------+
  64 //  |                   | |    |
  65 //  |                   | |    * 41-0 Object Offset (42-bits, 4TB address space)
  66 //  |                   | |
  67 //  |                   | * 45-42 Metadata Bits (4-bits)  0001 = Marked0      (Address view 4-8TB)
  68 //  |                   |                                 0010 = Marked1      (Address view 8-12TB)
  69 //  |                   |                                 0100 = Remapped     (Address view 16-20TB)
  70 //  |                   |                                 1000 = Finalizable  (Address view N/A)
  71 //  |                   |
  72 //  |                   * 46-46 Unused (1-bit, always zero)
  73 //  |
  74 //  * 63-47 Fixed (17-bits, always zero)
  75 //
  76 
  77 const size_t    ZPlatformPageSizeSmallShift    = 21; // 2M
  78 
  79 const size_t    ZPlatformAddressOffsetBits     = 42; // 4TB
  80 
  81 const uintptr_t ZPlatformAddressMetadataShift  = ZPlatformAddressOffsetBits;
  82 
  83 const uintptr_t ZPlatformAddressSpaceStart     = (uintptr_t)1 << ZPlatformAddressOffsetBits;
  84 const uintptr_t ZPlatformAddressSpaceSize      = ((uintptr_t)1 << ZPlatformAddressOffsetBits) * 4;
  85 
  86 const size_t    ZPlatformNMethodDisarmedOffset = 4;
  87 
  88 const size_t    ZPlatformCacheLineSize         = 64;
  89 
  90 #endif // OS_CPU_LINUX_X86_GC_Z_ZGLOBALS_LINUX_X86_HPP

  57 //
  58 //
  59 //   6                 4 4 4  4 4                                             0
  60 //   3                 7 6 5  2 1                                             0
  61 //  +-------------------+-+----+-----------------------------------------------+
  62 //  |00000000 00000000 0|0|1111|11 11111111 11111111 11111111 11111111 11111111|
  63 //  +-------------------+-+----+-----------------------------------------------+
  64 //  |                   | |    |
  65 //  |                   | |    * 41-0 Object Offset (42-bits, 4TB address space)
  66 //  |                   | |
  67 //  |                   | * 45-42 Metadata Bits (4-bits)  0001 = Marked0      (Address view 4-8TB)
  68 //  |                   |                                 0010 = Marked1      (Address view 8-12TB)
  69 //  |                   |                                 0100 = Remapped     (Address view 16-20TB)
  70 //  |                   |                                 1000 = Finalizable  (Address view N/A)
  71 //  |                   |
  72 //  |                   * 46-46 Unused (1-bit, always zero)
  73 //  |
  74 //  * 63-47 Fixed (17-bits, always zero)
  75 //
  76 
  77 const size_t    ZPlatformGranuleSizeShift      = 21; // 2M
  78 
  79 const size_t    ZPlatformAddressOffsetBits     = 42; // 4TB
  80 
  81 const uintptr_t ZPlatformAddressMetadataShift  = ZPlatformAddressOffsetBits;
  82 
  83 const uintptr_t ZPlatformAddressSpaceStart     = (uintptr_t)1 << ZPlatformAddressOffsetBits;
  84 const uintptr_t ZPlatformAddressSpaceSize      = ((uintptr_t)1 << ZPlatformAddressOffsetBits) * 4;
  85 
  86 const size_t    ZPlatformNMethodDisarmedOffset = 4;
  87 
  88 const size_t    ZPlatformCacheLineSize         = 64;
  89 
  90 #endif // OS_CPU_LINUX_X86_GC_Z_ZGLOBALS_LINUX_X86_HPP