1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * lzodefs.h -- architecture, OS and compiler specific defines 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (C) 1996-2012 Markus F.X.J. Oberhumer <markus@oberhumer.com> 6*4882a593Smuzhiyun * 7*4882a593Smuzhiyun * The full LZO package can be found at: 8*4882a593Smuzhiyun * http://www.oberhumer.com/opensource/lzo/ 9*4882a593Smuzhiyun * 10*4882a593Smuzhiyun * Changed for Linux kernel use by: 11*4882a593Smuzhiyun * Nitin Gupta <nitingupta910@gmail.com> 12*4882a593Smuzhiyun * Richard Purdie <rpurdie@openedhand.com> 13*4882a593Smuzhiyun */ 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun /* Version 17*4882a593Smuzhiyun * 0: original lzo version 18*4882a593Smuzhiyun * 1: lzo with support for RLE 19*4882a593Smuzhiyun */ 20*4882a593Smuzhiyun #define LZO_VERSION 1 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun #define COPY4(dst, src) \ 23*4882a593Smuzhiyun put_unaligned(get_unaligned((const u32 *)(src)), (u32 *)(dst)) 24*4882a593Smuzhiyun #if defined(CONFIG_X86_64) || defined(CONFIG_ARM64) 25*4882a593Smuzhiyun #define COPY8(dst, src) \ 26*4882a593Smuzhiyun put_unaligned(get_unaligned((const u64 *)(src)), (u64 *)(dst)) 27*4882a593Smuzhiyun #else 28*4882a593Smuzhiyun #define COPY8(dst, src) \ 29*4882a593Smuzhiyun COPY4(dst, src); COPY4((dst) + 4, (src) + 4) 30*4882a593Smuzhiyun #endif 31*4882a593Smuzhiyun 32*4882a593Smuzhiyun #if defined(__BIG_ENDIAN) && defined(__LITTLE_ENDIAN) 33*4882a593Smuzhiyun #error "conflicting endian definitions" 34*4882a593Smuzhiyun #elif defined(CONFIG_X86_64) || defined(CONFIG_ARM64) 35*4882a593Smuzhiyun #define LZO_USE_CTZ64 1 36*4882a593Smuzhiyun #define LZO_USE_CTZ32 1 37*4882a593Smuzhiyun #define LZO_FAST_64BIT_MEMORY_ACCESS 38*4882a593Smuzhiyun #elif defined(CONFIG_X86) || defined(CONFIG_PPC) 39*4882a593Smuzhiyun #define LZO_USE_CTZ32 1 40*4882a593Smuzhiyun #elif defined(CONFIG_ARM) && (__LINUX_ARM_ARCH__ >= 5) 41*4882a593Smuzhiyun #define LZO_USE_CTZ32 1 42*4882a593Smuzhiyun #endif 43*4882a593Smuzhiyun 44*4882a593Smuzhiyun #define M1_MAX_OFFSET 0x0400 45*4882a593Smuzhiyun #define M2_MAX_OFFSET 0x0800 46*4882a593Smuzhiyun #define M3_MAX_OFFSET 0x4000 47*4882a593Smuzhiyun #define M4_MAX_OFFSET_V0 0xbfff 48*4882a593Smuzhiyun #define M4_MAX_OFFSET_V1 0xbffe 49*4882a593Smuzhiyun 50*4882a593Smuzhiyun #define M1_MIN_LEN 2 51*4882a593Smuzhiyun #define M1_MAX_LEN 2 52*4882a593Smuzhiyun #define M2_MIN_LEN 3 53*4882a593Smuzhiyun #define M2_MAX_LEN 8 54*4882a593Smuzhiyun #define M3_MIN_LEN 3 55*4882a593Smuzhiyun #define M3_MAX_LEN 33 56*4882a593Smuzhiyun #define M4_MIN_LEN 3 57*4882a593Smuzhiyun #define M4_MAX_LEN 9 58*4882a593Smuzhiyun 59*4882a593Smuzhiyun #define M1_MARKER 0 60*4882a593Smuzhiyun #define M2_MARKER 64 61*4882a593Smuzhiyun #define M3_MARKER 32 62*4882a593Smuzhiyun #define M4_MARKER 16 63*4882a593Smuzhiyun 64*4882a593Smuzhiyun #define MIN_ZERO_RUN_LENGTH 4 65*4882a593Smuzhiyun #define MAX_ZERO_RUN_LENGTH (2047 + MIN_ZERO_RUN_LENGTH) 66*4882a593Smuzhiyun 67*4882a593Smuzhiyun #define lzo_dict_t unsigned short 68*4882a593Smuzhiyun #define D_BITS 13 69*4882a593Smuzhiyun #define D_SIZE (1u << D_BITS) 70*4882a593Smuzhiyun #define D_MASK (D_SIZE - 1) 71*4882a593Smuzhiyun #define D_HIGH ((D_MASK >> 1) + 1) 72