lzodefs.h 1.1 KB

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  1. /*
  2. * lzodefs.h -- architecture, OS and compiler specific defines
  3. *
  4. * Copyright (C) 1996-2005 Markus F.X.J. Oberhumer <markus@oberhumer.com>
  5. *
  6. * The full LZO package can be found at:
  7. * http://www.oberhumer.com/opensource/lzo/
  8. *
  9. * Changed for kernel use by:
  10. * Nitin Gupta <nitingupta910@gmail.com>
  11. * Richard Purdie <rpurdie@openedhand.com>
  12. */
  13. #define LZO_VERSION 0x2020
  14. #define LZO_VERSION_STRING "2.02"
  15. #define LZO_VERSION_DATE "Oct 17 2005"
  16. #define M1_MAX_OFFSET 0x0400
  17. #define M2_MAX_OFFSET 0x0800
  18. #define M3_MAX_OFFSET 0x4000
  19. #define M4_MAX_OFFSET 0xbfff
  20. #define M1_MIN_LEN 2
  21. #define M1_MAX_LEN 2
  22. #define M2_MIN_LEN 3
  23. #define M2_MAX_LEN 8
  24. #define M3_MIN_LEN 3
  25. #define M3_MAX_LEN 33
  26. #define M4_MIN_LEN 3
  27. #define M4_MAX_LEN 9
  28. #define M1_MARKER 0
  29. #define M2_MARKER 64
  30. #define M3_MARKER 32
  31. #define M4_MARKER 16
  32. #define D_BITS 14
  33. #define D_MASK ((1u << D_BITS) - 1)
  34. #define D_HIGH ((D_MASK >> 1) + 1)
  35. #define DX2(p, s1, s2) (((((size_t)((p)[2]) << (s2)) ^ (p)[1]) \
  36. << (s1)) ^ (p)[0])
  37. #define DX3(p, s1, s2, s3) ((DX2((p)+1, s2, s3) << (s1)) ^ (p)[0])