// taken from // https://raw.githubusercontent.com/pyca/bcrypt/master/src/_csrc/portable_endian.h // as of June 11, 2020 // "License": Public Domain // I, Mathias Panzenböck, place this file hereby into the public domain. Use it at your own risk for whatever you like. // In case there are jurisdictions that don't support putting things in the public domain you can also consider it to // be "dual licensed" under the BSD, MIT and Apache licenses, if you want to. This code is trivial anyway. Consider it // an example on how to get the endian conversion functions on different platforms. #ifndef PORTABLE_ENDIAN_H__ #define PORTABLE_ENDIAN_H__ #if (defined(_WIN16) || defined(_WIN32) || defined(_WIN64)) && !defined(__WINDOWS__) # define __WINDOWS__ #endif #if defined(__linux__) || defined(__CYGWIN__) /* Define necessary macros for the header to expose all fields. */ # if !defined(_BSD_SOURCE) # define _BSD_SOURCE # endif # if !defined(__USE_BSD) # define __USE_BSD # endif # if !defined(_DEFAULT_SOURCE) # define _DEFAULT_SOURCE # endif # include # include /* See http://linux.die.net/man/3/endian */ # if defined(htobe16) && defined(htole16) && defined(be16toh) && defined(le16toh) && defined(htobe32) && defined(htole32) && defined(be32toh) && defined(htole32) && defined(htobe64) && defined(htole64) && defined(htobe64) && defined(be64toh) && defined(htole64) && defined(le64toh) /* Do nothing. The macros we need already exist. */ # elif !defined(__GLIBC__) || !defined(__GLIBC_MINOR__) || ((__GLIBC__ < 2) || ((__GLIBC__ == 2) && (__GLIBC_MINOR__ < 9))) # include # if defined(__BYTE_ORDER) && (__BYTE_ORDER == __LITTLE_ENDIAN) # define htobe16(x) htons(x) # define htole16(x) (x) # define be16toh(x) ntohs(x) # define le16toh(x) (x) # define htobe32(x) htonl(x) # define htole32(x) (x) # define be32toh(x) ntohl(x) # define le32toh(x) (x) # define htobe64(x) (((uint64_t)htonl(((uint32_t)(((uint64_t)(x)) >> 32)))) | (((uint64_t)htonl(((uint32_t)(x)))) << 32)) # define htole64(x) (x) # define be64toh(x) (((uint64_t)ntohl(((uint32_t)(((uint64_t)(x)) >> 32)))) | (((uint64_t)ntohl(((uint32_t)(x)))) << 32)) # define le64toh(x) (x) # elif defined(__BYTE_ORDER) && (__BYTE_ORDER == __BIG_ENDIAN) # define htobe16(x) (x) # define htole16(x) (((((uint16_t)(x)) >> 8))|((((uint16_t)(x)) << 8))) # define be16toh(x) (x) # define le16toh(x) (((((uint16_t)(x)) >> 8))|((((uint16_t)(x)) << 8))) # define htobe32(x) (x) # define htole32(x) (((uint32_t)htole16(((uint16_t)(((uint32_t)(x)) >> 16)))) | (((uint32_t)htole16(((uint16_t)(x)))) << 16)) # define be32toh(x) (x) # define le32toh(x) (((uint32_t)le16toh(((uint16_t)(((uint32_t)(x)) >> 16)))) | (((uint32_t)le16toh(((uint16_t)(x)))) << 16)) # define htobe64(x) (x) # define htole64(x) (((uint64_t)htole32(((uint32_t)(((uint64_t)(x)) >> 32)))) | (((uint64_t)htole32(((uint32_t)(x)))) << 32)) # define be64toh(x) (x) # define le64toh(x) (((uint64_t)le32toh(((uint32_t)(((uint64_t)(x)) >> 32)))) | (((uint64_t)le32toh(((uint32_t)(x)))) << 32)) # else # error Byte Order not supported or not defined. # endif # endif #elif defined(__APPLE__) # include # 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) # define __BYTE_ORDER BYTE_ORDER # define __BIG_ENDIAN BIG_ENDIAN # define __LITTLE_ENDIAN LITTLE_ENDIAN # define __PDP_ENDIAN PDP_ENDIAN #elif defined(__OpenBSD__) # include #elif defined(__HAIKU__) # include #elif defined(__NetBSD__) || defined(__FreeBSD__) || defined(__DragonFly__) # include # if !defined(be16toh) # define be16toh(x) betoh16(x) # define le16toh(x) letoh16(x) # endif # if !defined(be32toh) # define be32toh(x) betoh32(x) # define le32toh(x) letoh32(x) # endif # if !defined(be64toh) # define be64toh(x) betoh64(x) # define le64toh(x) letoh64(x) # endif #elif defined(__WINDOWS__) # if BYTE_ORDER == LITTLE_ENDIAN # 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) (((uint64_t)htobe32(((uint32_t)(((uint64_t)(x)) >> 32))) & 0x00000000FFFFFFFFULL) | (((uint64_t)htobe32(((uint32_t)(x)))) << 32)) # define be64toh(x) (((uint64_t)be32toh(((uint32_t)(((uint64_t)(x)) >> 32))) & 0x00000000FFFFFFFFULL) | (((uint64_t)be32toh(((uint32_t)(x)))) << 32)) # define htole64(x) (x) # define le64toh(x) (x) # elif BYTE_ORDER == BIG_ENDIAN /* that would be xbox 360 */ # define htobe16(x) (x) # define htole16(x) __builtin_bswap16(x) # define be16toh(x) (x) # define le16toh(x) __builtin_bswap16(x) # define htobe32(x) (x) # define htole32(x) __builtin_bswap32(x) # define be32toh(x) (x) # define le32toh(x) __builtin_bswap32(x) # define htobe64(x) (x) # define htole64(x) __builtin_bswap64(x) # define be64toh(x) (x) # define le64toh(x) __builtin_bswap64(x) # else # error byte order not supported # endif # define __BYTE_ORDER BYTE_ORDER # define __BIG_ENDIAN BIG_ENDIAN # define __LITTLE_ENDIAN LITTLE_ENDIAN # define __PDP_ENDIAN PDP_ENDIAN #elif defined(__sun) # include # define htobe16(x) BE_16(x) # define htole16(x) LE_16(x) # define be16toh(x) BE_16(x) # define le16toh(x) LE_16(x) # define htobe32(x) BE_32(x) # define htole32(x) LE_32(x) # define be32toh(x) BE_32(x) # define le32toh(x) LE_32(x) # define htobe64(x) BE_64(x) # define htole64(x) LE_64(x) # define be64toh(x) BE_64(x) # define le64toh(x) LE_64(x) #elif defined _AIX /* AIX is always big endian */ # define be64toh(x) (x) # define be32toh(x) (x) # define be16toh(x) (x) # define le32toh(x) \ ((((x) & 0xff) << 24) | \ (((x) & 0xff00) << 8) | \ (((x) & 0xff0000) >> 8) | \ (((x) & 0xff000000) >> 24)) # define le64toh(x) \ ((((x) & 0x00000000000000ffL) << 56) | \ (((x) & 0x000000000000ff00L) << 40) | \ (((x) & 0x0000000000ff0000L) << 24) | \ (((x) & 0x00000000ff000000L) << 8) | \ (((x) & 0x000000ff00000000L) >> 8) | \ (((x) & 0x0000ff0000000000L) >> 24) | \ (((x) & 0x00ff000000000000L) >> 40) | \ (((x) & 0xff00000000000000L) >> 56)) # ifndef htobe64 # define htobe64(x) be64toh(x) # endif # ifndef htobe32 # define htobe32(x) be32toh(x) # endif # ifndef htobe16 # define htobe16(x) be16toh(x) # endif #else # error platform not supported #endif #endif