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/* 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
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