Commit | Line | Data |
---|---|---|
64c70b1c RP |
1 | /* |
2 | * lzodefs.h -- architecture, OS and compiler specific defines | |
3 | * | |
8b975bd3 | 4 | * Copyright (C) 1996-2012 Markus F.X.J. Oberhumer <markus@oberhumer.com> |
64c70b1c RP |
5 | * |
6 | * The full LZO package can be found at: | |
7 | * http://www.oberhumer.com/opensource/lzo/ | |
8 | * | |
8b975bd3 | 9 | * Changed for Linux kernel use by: |
64c70b1c RP |
10 | * Nitin Gupta <nitingupta910@gmail.com> |
11 | * Richard Purdie <rpurdie@openedhand.com> | |
12 | */ | |
13 | ||
8b975bd3 MO |
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 | |
64c70b1c RP |
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 | ||
8b975bd3 MO |
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) | |
64c70b1c | 59 | #define D_HIGH ((D_MASK >> 1) + 1) |