projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 64c70b1c RP |
2 | /* |
| 3 | * lzodefs.h -- architecture, OS and compiler specific defines | |
| 4 | * | |
| 8b975bd3 | 5 | * Copyright (C) 1996-2012 Markus F.X.J. Oberhumer <[email protected]> |
| 64c70b1c RP |
6 | * |
| 7 | * The full LZO package can be found at: | |
| 8 | * http://www.oberhumer.com/opensource/lzo/ | |
| 9 | * | |
| 8b975bd3 | 10 | * Changed for Linux kernel use by: |
| 64c70b1c RP |
11 | * Nitin Gupta <[email protected]> |
| 12 | * Richard Purdie <[email protected]> | |
| 13 | */ | |
| 14 | ||
| 8b975bd3 MO |
15 | |
| 16 | #define COPY4(dst, src) \ | |
| 17 | put_unaligned(get_unaligned((const u32 *)(src)), (u32 *)(dst)) | |
| 18 | #if defined(__x86_64__) | |
| 19 | #define COPY8(dst, src) \ | |
| 20 | put_unaligned(get_unaligned((const u64 *)(src)), (u64 *)(dst)) | |
| 21 | #else | |
| 22 | #define COPY8(dst, src) \ | |
| 23 | COPY4(dst, src); COPY4((dst) + 4, (src) + 4) | |
| 24 | #endif | |
| 25 | ||
| 26 | #if defined(__BIG_ENDIAN) && defined(__LITTLE_ENDIAN) | |
| 27 | #error "conflicting endian definitions" | |
| 28 | #elif defined(__x86_64__) | |
| 29 | #define LZO_USE_CTZ64 1 | |
| 30 | #define LZO_USE_CTZ32 1 | |
| 31 | #elif defined(__i386__) || defined(__powerpc__) | |
| 32 | #define LZO_USE_CTZ32 1 | |
| 33 | #elif defined(__arm__) && (__LINUX_ARM_ARCH__ >= 5) | |
| 34 | #define LZO_USE_CTZ32 1 | |
| 35 | #endif | |
| 64c70b1c RP |
36 | |
| 37 | #define M1_MAX_OFFSET 0x0400 | |
| 38 | #define M2_MAX_OFFSET 0x0800 | |
| 39 | #define M3_MAX_OFFSET 0x4000 | |
| 40 | #define M4_MAX_OFFSET 0xbfff | |
| 41 | ||
| 42 | #define M1_MIN_LEN 2 | |
| 43 | #define M1_MAX_LEN 2 | |
| 44 | #define M2_MIN_LEN 3 | |
| 45 | #define M2_MAX_LEN 8 | |
| 46 | #define M3_MIN_LEN 3 | |
| 47 | #define M3_MAX_LEN 33 | |
| 48 | #define M4_MIN_LEN 3 | |
| 49 | #define M4_MAX_LEN 9 | |
| 50 | ||
| 51 | #define M1_MARKER 0 | |
| 52 | #define M2_MARKER 64 | |
| 53 | #define M3_MARKER 32 | |
| 54 | #define M4_MARKER 16 | |
| 55 | ||
| 8b975bd3 MO |
56 | #define lzo_dict_t unsigned short |
| 57 | #define D_BITS 13 | |
| 58 | #define D_SIZE (1u << D_BITS) | |
| 59 | #define D_MASK (D_SIZE - 1) | |
| 64c70b1c | 60 | #define D_HIGH ((D_MASK >> 1) + 1) |