diff options
Diffstat (limited to 'include/ouroboros/endian.h')
| -rw-r--r-- | include/ouroboros/endian.h | 164 |
1 files changed, 52 insertions, 112 deletions
diff --git a/include/ouroboros/endian.h b/include/ouroboros/endian.h index a2745595..46f384ec 100644 --- a/include/ouroboros/endian.h +++ b/include/ouroboros/endian.h @@ -4,9 +4,7 @@ * Endianness * * Dimitri Staessens <dimitri.staessens@intec.ugent.be> - * - * This implementation is adapted and redistributed from the RHASH - * project + * Sander Vrijders <sander.vrijders@intec.ugent.be> * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public License @@ -23,126 +21,68 @@ * 02110-1301 USA */ -/* - * byte_order.h - byte order related platform dependent routines, - * - * Copyright: 2008-2012 Aleksey Kravchenko <rhash.admin@gmail.com> - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY - * or FITNESS FOR A PARTICULAR PURPOSE. Use this program at your own risk! - */ - #ifndef OUROBOROS_ENDIAN_H #define OUROBOROS_ENDIAN_H -#include <stdint.h> -#include <unistd.h> -#include <stdlib.h> +#if defined(__linux__) || defined(__CYGWIN__) + +#define _BSD_SOURCE +#define __USE_BSD +#define _DEFAULT_SOURCE -#ifdef __GLIBC__ #include <endian.h> -#elif defined(__FreeBSD__) +#include <features.h> + +#define betoh16(x) be16toh(x) +#define letoh16(x) le16toh(x) +#define betoh32(x) be32toh(x) +#define letoh32(x) le32toh(x) +#define betoh64(x) be64toh(x) +#define letoh64(x) le64toh(x) + +#elif defined(__NetBSD__) || defined(__FreeBSD__) + #include <sys/endian.h> -#endif -/* if x86 compatible cpu */ -#if defined(i386) || defined(__i386__) || defined(__i486__) || \ - defined(__i586__) || defined(__i686__) || defined(__pentium__) || \ - defined(__pentiumpro__) || defined(__pentium4__) || \ - defined(__nocona__) || defined(prescott) || defined(__core2__) || \ - defined(__k6__) || defined(__k8__) || defined(__athlon__) || \ - defined(__amd64) || defined(__amd64__) || \ - defined(__x86_64) || defined(__x86_64__) || defined(_M_IX86) || \ - defined(_M_AMD64) || defined(_M_IA64) || defined(_M_X64) -/* detect if x86-64 instruction set is supported */ -# if defined(_LP64) || defined(__LP64__) || defined(__x86_64) || \ - defined(__x86_64__) || defined(_M_AMD64) || defined(_M_X64) -# define CPU_X64 -# else -# define CPU_IA32 -# endif -#endif +#define betoh16(x) be16toh(x) +#define letoh16(x) le16toh(x) +#define betoh32(x) be32toh(x) +#define letoh32(x) le32toh(x) +#define betoh64(x) be64toh(x) +#define letoh64(x) le64toh(x) -/* detect CPU endianness */ -#if (defined(__BYTE_ORDER) && defined(__LITTLE_ENDIAN) && \ - __BYTE_ORDER == __LITTLE_ENDIAN) || \ - defined(CPU_IA32) || defined(CPU_X64) || \ - defined(__ia64) || defined(__ia64__) || defined(__alpha__) || \ - defined(_M_ALPHA) || defined(vax) || defined(MIPSEL) || \ - defined(_ARM_) || defined(__arm__) -#define CPU_LITTLE_ENDIAN -#define IS_BIG_ENDIAN 0 -#define IS_LITTLE_ENDIAN 1 -#elif (defined(__BYTE_ORDER) && defined(__BIG_ENDIAN) && \ - __BYTE_ORDER == __BIG_ENDIAN) || \ - defined(__sparc) || defined(__sparc__) || defined(sparc) || \ - defined(_ARCH_PPC) || defined(_ARCH_PPC64) || defined(_POWER) || \ - defined(__POWERPC__) || defined(POWERPC) || defined(__powerpc) || \ - defined(__powerpc__) || defined(__powerpc64__) || defined(__ppc__) || \ - defined(__hpux) || defined(_MIPSEB) || defined(mc68000) || \ - defined(__s390__) || defined(__s390x__) || defined(sel) -#define CPU_BIG_ENDIAN -#define IS_BIG_ENDIAN 1 -#define IS_LITTLE_ENDIAN 0 -#else -# error "Can't detect CPU architecture." -#endif +#elif defined(__APPLE__) + +#include <libkern/OSByteOrder.h> + +#define htobe16(x) OSSwapHostToBigInt16(x) +#define htole16(x) OSSwapHostToLittleInt16(x) +#define betoh16(x) OSSwapBigToHostInt16(x) +#define letoh16(x) OSSwapLittleToHostInt16(x) + +#define htobe32(x) OSSwapHostToBigInt32(x) +#define htole32(x) OSSwapHostToLittleInt32(x) +#define betoh32(x) OSSwapBigToHostInt32(x) +#define letoh32(x) OSSwapLittleToHostInt32(x) + +#define htobe64(x) OSSwapHostToBigInt64(x) +#define htole64(x) OSSwapHostToLittleInt64(x) +#define betoh64(x) OSSwapBigToHostInt64(x) +#define letoh64(x) OSSwapLittleToHostInt64(x) + +#elif defined(__OpenBSD__) + +#include <sys/endian.h> -#if defined(__GNUC__) && (__GNUC__ >= 4) && \ - (__GNUC__ > 4 || __GNUC_MINOR__ >= 3) -/* for GCC >= 4.3 */ -#define bswap_32(x) __builtin_bswap32(x) -#elif !defined(__STRICT_ANSI__) -/* general bswap_32 definition */ -static inline uint32_t bswap_32(uint32_t x) { - x = ((x << 8) & 0xFF00FF00) | ((x >> 8) & 0x00FF00FF); - return (x >> 16) | (x << 16); -} -#else -#define bswap_32(x) ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \ - (((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24)) -#endif /* bswap_32 */ - -#if defined(__GNUC__) && (__GNUC__ >= 4) && \ - (__GNUC__ > 4 || __GNUC_MINOR__ >= 3) -#define bswap_64(x) __builtin_bswap64(x) -#elif defined (bswap64) -#define bswap_64 bswap64 -#else -#if !defined(__STRICT_ANSI__) -static inline uint64_t bswap_64(uint64_t x) { - union { - uint64_t ll; - uint32_t l[2]; - } w, r; - w.ll = x; - r.l[0] = bswap_32(w.l[1]); - r.l[1] = bswap_32(w.l[0]); - return r.ll; -} #else -#error "bswap_64 unsupported" -#endif + +#error OS currently not supported + #endif -#ifdef CPU_LITTLE_ENDIAN -#define hton64(x) bswap_64(x) -#define hton32(x) bswap_32(x) -#define ntoh64(x) bswap_64(x) -#define ntoh32(x) bswap_32(x) -#else /* CPU_LITTLE_ENDIAN */ -#define hton64(x) (x) -#define hton32(x) (x) -#define ntoh64(x) (x) -#define noth32(x) (x) -#endif /* CPU_LITTLE_ENDIAN */ +#define hton64(x) htobe64(x) +#define hton32(x) htobe32(x) +#define ntoh64(x) betoh64(x) +#define noth32(x) betoh32(x) #endif /* OUROBOROS_ENDIAN_H */ |