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Diffstat (limited to '')
| -rw-r--r-- | lib/lzo/lzodefs.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/lib/lzo/lzodefs.h b/lib/lzo/lzodefs.h new file mode 100644 index 000000000..b60851fcf --- /dev/null +++ b/lib/lzo/lzodefs.h @@ -0,0 +1,71 @@ +/* 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> + */ + + +/* Version + * 0: original lzo version + * 1: lzo with support for RLE + */ +#define LZO_VERSION 1 + +#define COPY4(dst, src) \ + put_unaligned(get_unaligned((const u32 *)(src)), (u32 *)(dst)) +#if defined(CONFIG_X86_64) || defined(CONFIG_ARM64) +#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(CONFIG_X86_64) || defined(CONFIG_ARM64) +#define LZO_USE_CTZ64 1 +#define LZO_USE_CTZ32 1 +#define LZO_FAST_64BIT_MEMORY_ACCESS +#elif defined(CONFIG_X86) || defined(CONFIG_PPC) +#define LZO_USE_CTZ32 1 +#elif defined(CONFIG_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_V0 0xbfff +#define M4_MAX_OFFSET_V1 0xbffe + +#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 MIN_ZERO_RUN_LENGTH 4 +#define MAX_ZERO_RUN_LENGTH (2047 + MIN_ZERO_RUN_LENGTH) + +#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) |