| /* 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) |
