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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 */