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Merge branch 'locking-arch-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[mirror_ubuntu-zesty-kernel.git] / lib / lzo / lzodefs.h
1 /*
2 * lzodefs.h -- architecture, OS and compiler specific defines
3 *
4 * Copyright (C) 1996-2012 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 Linux kernel use by:
10 * Nitin Gupta <nitingupta910@gmail.com>
11 * Richard Purdie <rpurdie@openedhand.com>
12 */
13
14
15 #define COPY4(dst, src) \
16 put_unaligned(get_unaligned((const u32 *)(src)), (u32 *)(dst))
17 #if defined(__x86_64__)
18 #define COPY8(dst, src) \
19 put_unaligned(get_unaligned((const u64 *)(src)), (u64 *)(dst))
20 #else
21 #define COPY8(dst, src) \
22 COPY4(dst, src); COPY4((dst) + 4, (src) + 4)
23 #endif
24
25 #if defined(__BIG_ENDIAN) && defined(__LITTLE_ENDIAN)
26 #error "conflicting endian definitions"
27 #elif defined(__x86_64__)
28 #define LZO_USE_CTZ64 1
29 #define LZO_USE_CTZ32 1
30 #elif defined(__i386__) || defined(__powerpc__)
31 #define LZO_USE_CTZ32 1
32 #elif defined(__arm__) && (__LINUX_ARM_ARCH__ >= 5)
33 #define LZO_USE_CTZ32 1
34 #endif
35
36 #define M1_MAX_OFFSET 0x0400
37 #define M2_MAX_OFFSET 0x0800
38 #define M3_MAX_OFFSET 0x4000
39 #define M4_MAX_OFFSET 0xbfff
40
41 #define M1_MIN_LEN 2
42 #define M1_MAX_LEN 2
43 #define M2_MIN_LEN 3
44 #define M2_MAX_LEN 8
45 #define M3_MIN_LEN 3
46 #define M3_MAX_LEN 33
47 #define M4_MIN_LEN 3
48 #define M4_MAX_LEN 9
49
50 #define M1_MARKER 0
51 #define M2_MARKER 64
52 #define M3_MARKER 32
53 #define M4_MARKER 16
54
55 #define lzo_dict_t unsigned short
56 #define D_BITS 13
57 #define D_SIZE (1u << D_BITS)
58 #define D_MASK (D_SIZE - 1)
59 #define D_HIGH ((D_MASK >> 1) + 1)