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])
44