72 lines · c
1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * lzodefs.h -- architecture, OS and compiler specific defines4 *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/* Version17 * 0: original lzo version18 * 1: lzo with support for RLE19 */20#define LZO_VERSION 121 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#else28#define COPY8(dst, src) \29 COPY4(dst, src); COPY4((dst) + 4, (src) + 4)30#endif31 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 136#define LZO_USE_CTZ32 137#define LZO_FAST_64BIT_MEMORY_ACCESS38#elif defined(CONFIG_X86) || defined(CONFIG_PPC)39#define LZO_USE_CTZ32 140#elif defined(CONFIG_ARM) && (__LINUX_ARM_ARCH__ >= 5)41#define LZO_USE_CTZ32 142#endif43 44#define M1_MAX_OFFSET 0x040045#define M2_MAX_OFFSET 0x080046#define M3_MAX_OFFSET 0x400047#define M4_MAX_OFFSET_V0 0xbfff48#define M4_MAX_OFFSET_V1 0xbffe49 50#define M1_MIN_LEN 251#define M1_MAX_LEN 252#define M2_MIN_LEN 353#define M2_MAX_LEN 854#define M3_MIN_LEN 355#define M3_MAX_LEN 3356#define M4_MIN_LEN 357#define M4_MAX_LEN 958 59#define M1_MARKER 060#define M2_MARKER 6461#define M3_MARKER 3262#define M4_MARKER 1663 64#define MIN_ZERO_RUN_LENGTH 465#define MAX_ZERO_RUN_LENGTH (2047 + MIN_ZERO_RUN_LENGTH)66 67#define lzo_dict_t unsigned short68#define D_BITS 1369#define D_SIZE (1u << D_BITS)70#define D_MASK (D_SIZE - 1)71#define D_HIGH ((D_MASK >> 1) + 1)72