| Richard Purdie | 64c70b1 | 2007-07-10 17:22:24 -0700 | [diff] [blame] | 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 | |
| 14 | #define LZO_VERSION 0x2020 |
| 15 | #define LZO_VERSION_STRING "2.02" |
| 16 | #define LZO_VERSION_DATE "Oct 17 2005" |
| 17 | |
| 18 | #define M1_MAX_OFFSET 0x0400 |
| 19 | #define M2_MAX_OFFSET 0x0800 |
| 20 | #define M3_MAX_OFFSET 0x4000 |
| 21 | #define M4_MAX_OFFSET 0xbfff |
| 22 | |
| 23 | #define M1_MIN_LEN 2 |
| 24 | #define M1_MAX_LEN 2 |
| 25 | #define M2_MIN_LEN 3 |
| 26 | #define M2_MAX_LEN 8 |
| 27 | #define M3_MIN_LEN 3 |
| 28 | #define M3_MAX_LEN 33 |
| 29 | #define M4_MIN_LEN 3 |
| 30 | #define M4_MAX_LEN 9 |
| 31 | |
| 32 | #define M1_MARKER 0 |
| 33 | #define M2_MARKER 64 |
| 34 | #define M3_MARKER 32 |
| 35 | #define M4_MARKER 16 |
| 36 | |
| 37 | #define D_BITS 14 |
| 38 | #define D_MASK ((1u << D_BITS) - 1) |
| 39 | #define D_HIGH ((D_MASK >> 1) + 1) |
| 40 | |
| 41 | #define DX2(p, s1, s2) (((((size_t)((p)[2]) << (s2)) ^ (p)[1]) \ |
| 42 | << (s1)) ^ (p)[0]) |
| 43 | #define DX3(p, s1, s2, s3) ((DX2((p)+1, s2, s3) << (s1)) ^ (p)[0]) |