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#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
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
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)
60#define D_HIGH		((D_MASK >> 1) + 1)

 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)