ladybird/Libraries/LibC/endian.h
2020-02-19 16:08:28 +01:00

109 lines
3.8 KiB
C

/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <sys/cdefs.h>
__BEGIN_DECLS
#define __LITTLE_ENDIAN 1234
#define __BIG_ENDIAN 4321
#define __PDP_ENDIAN 3412
#if defined(__GNUC__) && defined(__BYTE_ORDER__)
# define __BYTE_ORDER __BYTE_ORDER__
#else
# include <bits/endian.h>
#endif
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
# include <stdint.h>
static __inline uint16_t __bswap16(uint16_t x)
{
return __builtin_bswap16(x);
}
static __inline uint32_t __bswap32(uint32_t x)
{
return __builtin_bswap32(x);
}
static __inline uint64_t __bswap64(uint64_t x)
{
return __builtin_bswap64(x);
}
# define LITTLE_ENDIAN __LITTLE_ENDIAN
# define BIG_ENDIAN __BIG_ENDIAN
# define PDP_ENDIAN __PDP_ENDIAN
# define BYTE_ORDER __BYTE_ORDER
# if __BYTE_ORDER == __LITTLE_ENDIAN
# define htole16(x) ((uint16_t)(x))
# define le16toh(x) ((uint16_t)(x))
# define letoh16(x) ((uint16_t)(x))
# define htole32(x) ((uint32_t)(x))
# define le32toh(x) ((uint32_t)(x))
# define letoh32(x) ((uint32_t)(x))
# define htole64(x) ((uint64_t)(x))
# define le64toh(x) ((uint64_t)(x))
# define letoh64(x) ((uint64_t)(x))
# define htobe16(x) (__builtin_bswap16(x))
# define be16toh(x) (__builtin_bswap16(x))
# define betoh16(x) (__builtin_bswap16(x))
# define htobe32(x) (__builtin_bswap32(x))
# define be32toh(x) (__builtin_bswap32(x))
# define betoh32(x) (__builtin_bswap32(x))
# define htobe64(x) (__builtin_bswap64(x))
# define be64toh(x) (__builtin_bswap64(x))
# define betoh64(x) (__builtin_bswap64(x))
# else
# define htole16(x) (__builtin_bswap16(x))
# define le16toh(x) (__builtin_bswap16(x))
# define letoh16(x) (__builtin_bswap16(x))
# define htole32(x) (__builtin_bswap32(x))
# define le32toh(x) (__builtin_bswap32(x))
# define letoh32(x) (__builtin_bswap32(x))
# define htole64(x) (__builtin_bswap64(x))
# define le64toh(x) (__builtin_bswap64(x))
# define letoh64(x) (__builtin_bswap64(x))
# define htobe16(x) ((uint16_t)(x))
# define be16toh(x) ((uint16_t)(x))
# define betoh16(x) ((uint16_t)(x))
# define htobe32(x) ((uint32_t)(x))
# define be32toh(x) ((uint32_t)(x))
# define betoh32(x) ((uint32_t)(x))
# define htobe64(x) ((uint64_t)(x))
# define be64toh(x) ((uint64_t)(x))
# define betoh64(x) ((uint64_t)(x))
# endif
#endif
__END_DECLS