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Diffstat (limited to 'grub-core/lib/xzembed/xz_config.h')
| -rw-r--r-- | grub-core/lib/xzembed/xz_config.h | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/grub-core/lib/xzembed/xz_config.h b/grub-core/lib/xzembed/xz_config.h new file mode 100644 index 0000000..24d570f --- /dev/null +++ b/grub-core/lib/xzembed/xz_config.h @@ -0,0 +1,152 @@ +/* xz_config.h - Private includes and definitions for userspace use */ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2010 Free Software Foundation, Inc. + * + * GRUB is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * GRUB is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GRUB. If not, see <http://www.gnu.org/licenses/>. + */ +/* + * This file is based on code from XZ embedded project + * http://tukaani.org/xz/embedded.html + */ + +#ifndef XZ_CONFIG_H +#define XZ_CONFIG_H + +/* Enable BCJ filter decoders. */ + +#ifndef GRUB_EMBED_DECOMPRESSOR + +#define XZ_DEC_X86 +#define XZ_DEC_POWERPC +#define XZ_DEC_IA64 +#define XZ_DEC_ARM +#define XZ_DEC_ARMTHUMB +#define XZ_DEC_SPARC + +#else + +#if defined(__i386__) || defined(__x86_64__) + #define XZ_DEC_X86 +#endif + +#ifdef __powerpc__ + #define XZ_DEC_POWERPC +#endif + +#ifdef __ia64__ + #define XZ_DEC_IA64 +#endif + +#ifdef __arm__ + #define XZ_DEC_ARM +#endif + +#ifdef __arm__ + #define XZ_DEC_ARMTHUMB +#endif + +#ifdef __sparc__ + #define XZ_DEC_SPARC +#endif +#endif + +#include "xz.h" +#include <stdlib.h> + +#define kmalloc(size, flags) malloc(size) +#define kfree(ptr) free(ptr) +#define vmalloc(size) malloc(size) +#define vfree(ptr) free(ptr) + +#define memeq(a, b, size) (memcmp(a, b, size) == 0) +#define memzero(buf, size) memset(buf, 0, size) + +#define min(x, y) ((x) < (y) ? (x) : (y)) +#define min_t(type, x, y) min(x, y) + +/* + * Some functions have been marked with __always_inline to keep the + * performance reasonable even when the compiler is optimizing for + * small code size. You may be able to save a few bytes by #defining + * __always_inline to plain inline, but don't complain if the code + * becomes slow. + * + * NOTE: System headers on GNU/Linux may #define this macro already, + * so if you want to change it, it you need to #undef it first. + */ +#ifndef __always_inline +# ifdef __GNUC__ +# define __always_inline \ + inline __attribute__((__always_inline__)) +# else +# define __always_inline inline +# endif +#endif + +/* + * Some functions are marked to never be inlined to reduce stack usage. + * If you don't care about stack usage, you may want to modify this so + * that noinline_for_stack is #defined to be empty even when using GCC. + * Doing so may save a few bytes in binary size. + */ +#ifndef noinline_for_stack +# ifdef __GNUC__ +# define noinline_for_stack __attribute__((__noinline__)) +# else +# define noinline_for_stack +# endif +#endif + +/* Inline functions to access unaligned unsigned 32-bit integers */ +static inline uint32_t get_unaligned_le32(const uint8_t *buf) +{ + return (uint32_t)buf[0] + | ((uint32_t)buf[1] << 8) + | ((uint32_t)buf[2] << 16) + | ((uint32_t)buf[3] << 24); +} + +static inline uint32_t get_unaligned_be32(const uint8_t *buf) +{ + return (uint32_t)(buf[0] << 24) + | ((uint32_t)buf[1] << 16) + | ((uint32_t)buf[2] << 8) + | (uint32_t)buf[3]; +} + +static inline void put_unaligned_le32(uint32_t val, uint8_t *buf) +{ + buf[0] = (uint8_t)val; + buf[1] = (uint8_t)(val >> 8); + buf[2] = (uint8_t)(val >> 16); + buf[3] = (uint8_t)(val >> 24); +} + +static inline void put_unaligned_be32(uint32_t val, uint8_t *buf) +{ + buf[0] = (uint8_t)(val >> 24); + buf[1] = (uint8_t)(val >> 16); + buf[2] = (uint8_t)(val >> 8); + buf[3] = (uint8_t)val; +} + +/* + * Use get_unaligned_le32() also for aligned access for simplicity. On + * little endian systems, #define get_le32(ptr) (*(const uint32_t *)(ptr)) + * could save a few bytes in code size. + */ +#define get_le32 get_unaligned_le32 + +#endif |