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])
 
 

 1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 *  lzodefs.h -- architecture, OS and compiler specific defines
 4 *
 5 *  Copyright (C) 1996-2012 Markus F.X.J. Oberhumer <markus@oberhumer.com>
 6 *
 7 *  The full LZO package can be found at:
 8 *  http://www.oberhumer.com/opensource/lzo/
 9 *
10 *  Changed for Linux kernel use by:
11 *  Nitin Gupta <nitingupta910@gmail.com>
12 *  Richard Purdie <rpurdie@openedhand.com>
13 */
14
15
16/* Version
17 * 0: original lzo version
18 * 1: lzo with support for RLE
19 */
20#define LZO_VERSION 1
21
22#define COPY4(dst, src)	\
23		put_unaligned(get_unaligned((const u32 *)(src)), (u32 *)(dst))
24#if defined(CONFIG_X86_64) || defined(CONFIG_ARM64)
25#define COPY8(dst, src)	\
26		put_unaligned(get_unaligned((const u64 *)(src)), (u64 *)(dst))
27#else
28#define COPY8(dst, src)	\
29		COPY4(dst, src); COPY4((dst) + 4, (src) + 4)
30#endif
31
32#if defined(__BIG_ENDIAN) && defined(__LITTLE_ENDIAN)
33#error "conflicting endian definitions"
34#elif defined(CONFIG_X86_64) || defined(CONFIG_ARM64)
35#define LZO_USE_CTZ64	1
36#define LZO_USE_CTZ32	1
37#define LZO_FAST_64BIT_MEMORY_ACCESS
38#elif defined(CONFIG_X86) || defined(CONFIG_PPC)
39#define LZO_USE_CTZ32	1
40#elif defined(CONFIG_ARM) && (__LINUX_ARM_ARCH__ >= 5)
41#define LZO_USE_CTZ32	1
42#endif
43
44#define M1_MAX_OFFSET	0x0400
45#define M2_MAX_OFFSET	0x0800
46#define M3_MAX_OFFSET	0x4000
47#define M4_MAX_OFFSET_V0	0xbfff
48#define M4_MAX_OFFSET_V1	0xbffe
49
50#define M1_MIN_LEN	2
51#define M1_MAX_LEN	2
52#define M2_MIN_LEN	3
53#define M2_MAX_LEN	8
54#define M3_MIN_LEN	3
55#define M3_MAX_LEN	33
56#define M4_MIN_LEN	3
57#define M4_MAX_LEN	9
58
59#define M1_MARKER	0
60#define M2_MARKER	64
61#define M3_MARKER	32
62#define M4_MARKER	16
63
64#define MIN_ZERO_RUN_LENGTH	4
65#define MAX_ZERO_RUN_LENGTH	(2047 + MIN_ZERO_RUN_LENGTH)
 
66
67#define lzo_dict_t      unsigned short
68#define D_BITS		13
69#define D_SIZE		(1u << D_BITS)
70#define D_MASK		(D_SIZE - 1)
71#define D_HIGH		((D_MASK >> 1) + 1)