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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)