61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
/*
|
||
|
|
* lzodefs.h -- architecture, OS and compiler specific defines
|
||
|
|
*
|
||
|
|
* Copyright (C) 1996-2012 Markus F.X.J. Oberhumer <markus@oberhumer.com>
|
||
|
|
*
|
||
|
|
* The full LZO package can be found at:
|
||
|
|
* http://www.oberhumer.com/opensource/lzo/
|
||
|
|
*
|
||
|
|
* Changed for Linux kernel use by:
|
||
|
|
* Nitin Gupta <nitingupta910@gmail.com>
|
||
|
|
* Richard Purdie <rpurdie@openedhand.com>
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
#define COPY4(dst, src) \
|
||
|
|
put_unaligned(get_unaligned((const u32 *)(src)), (u32 *)(dst))
|
||
|
|
#if defined(__x86_64__)
|
||
|
|
#define COPY8(dst, src) \
|
||
|
|
put_unaligned(get_unaligned((const u64 *)(src)), (u64 *)(dst))
|
||
|
|
#else
|
||
|
|
#define COPY8(dst, src) \
|
||
|
|
COPY4(dst, src); COPY4((dst) + 4, (src) + 4)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if defined(__BIG_ENDIAN) && defined(__LITTLE_ENDIAN)
|
||
|
|
#error "conflicting endian definitions"
|
||
|
|
#elif defined(__x86_64__)
|
||
|
|
#define LZO_USE_CTZ64 1
|
||
|
|
#define LZO_USE_CTZ32 1
|
||
|
|
#elif defined(__i386__) || defined(__powerpc__)
|
||
|
|
#define LZO_USE_CTZ32 1
|
||
|
|
#elif defined(__arm__) && (__LINUX_ARM_ARCH__ >= 5)
|
||
|
|
#define LZO_USE_CTZ32 1
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define M1_MAX_OFFSET 0x0400
|
||
|
|
#define M2_MAX_OFFSET 0x0800
|
||
|
|
#define M3_MAX_OFFSET 0x4000
|
||
|
|
#define M4_MAX_OFFSET 0xbfff
|
||
|
|
|
||
|
|
#define M1_MIN_LEN 2
|
||
|
|
#define M1_MAX_LEN 2
|
||
|
|
#define M2_MIN_LEN 3
|
||
|
|
#define M2_MAX_LEN 8
|
||
|
|
#define M3_MIN_LEN 3
|
||
|
|
#define M3_MAX_LEN 33
|
||
|
|
#define M4_MIN_LEN 3
|
||
|
|
#define M4_MAX_LEN 9
|
||
|
|
|
||
|
|
#define M1_MARKER 0
|
||
|
|
#define M2_MARKER 64
|
||
|
|
#define M3_MARKER 32
|
||
|
|
#define M4_MARKER 16
|
||
|
|
|
||
|
|
#define lzo_dict_t unsigned short
|
||
|
|
#define D_BITS 13
|
||
|
|
#define D_SIZE (1u << D_BITS)
|
||
|
|
#define D_MASK (D_SIZE - 1)
|
||
|
|
#define D_HIGH ((D_MASK >> 1) + 1)
|