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/*
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, you can obtain one at https://mozilla.org/MPL/2.0/.
*
* See the COPYRIGHT file distributed with this work for additional
* information regarding copyright ownership.
*/
#pragma once
#if defined(__DragonFly__) || defined(__FreeBSD__) || \
defined(__NetBSD__) || defined (__OpenBSD__) || defined(__bsdi__)
# include <sys/endian.h>
/*
* Recent BSDs should have [bl]e{16,32,64}toh() defined in <sys/endian.h>.
* Older ones might not, but these should have the alternatively named
* [bl]etoh{16,32,64}() functions defined.
*/
# ifndef be16toh
# define be16toh(x) betoh16(x)
# define le16toh(x) letoh16(x)
# define be32toh(x) betoh32(x)
# define le32toh(x) letoh32(x)
# define be64toh(x) betoh64(x)
# define le64toh(x) letoh64(x)
# endif /* !be16toh */
#elif defined(_WIN32)
/*
* Windows is always little-endian and has its own byte-swapping routines, so
* use these.
*/
# include <stdlib.h>
# define htobe16(x) _byteswap_ushort(x)
# define htole16(x) (x)
# define be16toh(x) _byteswap_ushort(x)
# define le16toh(x) (x)
# define htobe32(x) _byteswap_ulong(x)
# define htole32(x) (x)
# define be32toh(x) _byteswap_ulong(x)
# define le32toh(x) (x)
# define htobe64(x) _byteswap_uint64(x)
# define htole64(x) (x)
# define be64toh(x) _byteswap_uint64(x)
# define le64toh(x) (x)
#elif defined __APPLE__
/*
* macOS has its own byte-swapping routines, so use these.
*/
# include <libkern/OSByteOrder.h>
# define htobe16(x) OSSwapHostToBigInt16(x)
# define htole16(x) OSSwapHostToLittleInt16(x)
# define be16toh(x) OSSwapBigToHostInt16(x)
# define le16toh(x) OSSwapLittleToHostInt16(x)
# define htobe32(x) OSSwapHostToBigInt32(x)
# define htole32(x) OSSwapHostToLittleInt32(x)
# define be32toh(x) OSSwapBigToHostInt32(x)
# define le32toh(x) OSSwapLittleToHostInt32(x)
# define htobe64(x) OSSwapHostToBigInt64(x)
# define htole64(x) OSSwapHostToLittleInt64(x)
# define be64toh(x) OSSwapBigToHostInt64(x)
# define le64toh(x) OSSwapLittleToHostInt64(x)
#elif defined(sun) || defined(__sun) || defined(__SVR4)
/*
* For Solaris, rely on the fallback definitions below, though use
* Solaris-specific versions of bswap_{16,32,64}().
*/
# include <sys/byteorder.h>
# define bswap_16(x) BSWAP_16(x)
# define bswap_32(x) BSWAP_32(x)
# define bswap_64(x) BSWAP_64(x)
#elif defined(__ANDROID__) || defined(__CYGWIN__) || \
defined(__GNUC__) || defined(__GNU__)
# include <byteswap.h>
# include <endian.h>
#else
#endif /* Specific platform support */
/*
* Fallback definitions.
*/
#include <inttypes.h>
#ifndef bswap_16
# define bswap_16(x) \
((uint16_t)((((uint16_t) (x) & 0xff00) >> 8) | \
(((uint16_t) (x) & 0x00ff) << 8)))
#endif /* !bswap_16 */
#ifndef bswap_32
# define bswap_32(x) \
((uint32_t)((((uint32_t) (x) & 0xff000000) >> 24) | \
(((uint32_t) (x) & 0x00ff0000) >> 8) | \
(((uint32_t) (x) & 0x0000ff00) << 8) | \
(((uint32_t) (x) & 0x000000ff) << 24)))
#endif /* !bswap_32 */
#ifndef bswap_64
# define bswap_64(x) \
((uint64_t)((((uint64_t) (x) & 0xff00000000000000ULL) >> 56) | \
(((uint64_t) (x) & 0x00ff000000000000ULL) >> 40) | \
(((uint64_t) (x) & 0x0000ff0000000000ULL) >> 24) | \
(((uint64_t) (x) & 0x000000ff00000000ULL) >> 8) | \
(((uint64_t) (x) & 0x00000000ff000000ULL) << 8) | \
(((uint64_t) (x) & 0x0000000000ff0000ULL) << 24) | \
(((uint64_t) (x) & 0x000000000000ff00ULL) << 40) | \
(((uint64_t) (x) & 0x00000000000000ffULL) << 56)))
#endif /* !bswap_64 */
#ifndef htobe16
# if WORDS_BIGENDIAN
# define htobe16(x) (x)
# define htole16(x) bswap_16(x)
# define be16toh(x) (x)
# define le16toh(x) bswap_16(x)
# else /* WORDS_BIGENDIAN */
# define htobe16(x) bswap_16(x)
# define htole16(x) (x)
# define be16toh(x) bswap_16(x)
# define le16toh(x) (x)
# endif /* WORDS_BIGENDIAN */
#endif /* !htobe16 */
#ifndef htobe32
# if WORDS_BIGENDIAN
# define htobe32(x) (x)
# define htole32(x) bswap_32(x)
# define be32toh(x) (x)
# define le32toh(x) bswap_32(x)
# else /* WORDS_BIGENDIAN */
# define htobe32(x) bswap_32(x)
# define htole32(x) (x)
# define be32toh(x) bswap_32(x)
# define le32toh(x) (x)
# endif /* WORDS_BIGENDIAN */
#endif /* !htobe32 */
#ifndef htobe64
# if WORDS_BIGENDIAN
# define htobe64(x) (x)
# define htole64(x) bswap_64(x)
# define be64toh(x) (x)
# define le64toh(x) bswap_64(x)
#else /* WORDS_BIGENDIAN */
# define htobe64(x) bswap_64(x)
# define htole64(x) (x)
# define be64toh(x) bswap_64(x)
# define le64toh(x) (x)
# endif /* WORDS_BIGENDIAN */
#endif /* !htobe64 */
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