/
endian.h
89 lines (75 loc) 路 2.56 KB
/
endian.h
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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#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