mhd_byteorder.h (6008B)
1 /* 2 This file is part of libmicrohttpd 3 Copyright (C) 2015-2022 Karlson2k (Evgeny Grin) 4 5 This library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 This library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with this library. 17 If not, see <http://www.gnu.org/licenses/>. 18 */ 19 20 /** 21 * @file microhttpd/mhd_byteorder.h 22 * @brief macro definitions for host byte order 23 * @author Karlson2k (Evgeny Grin) 24 */ 25 26 #ifndef MHD_BYTEORDER_H 27 #define MHD_BYTEORDER_H 28 29 #include "mhd_options.h" 30 31 #include <stdint.h> 32 33 #ifdef HAVE_ENDIAN_H 34 #include <endian.h> 35 #endif 36 37 #ifdef HAVE_SYS_PARAM_H 38 #include <sys/param.h> 39 #endif 40 41 #ifdef HAVE_MACHINE_ENDIAN_H 42 #include <machine/endian.h> 43 #endif 44 45 #ifdef HAVE_SYS_ENDIAN_H 46 #include <sys/endian.h> 47 #endif 48 49 #ifdef HAVE_SYS_TYPES_H 50 #include <sys/types.h> 51 #endif 52 53 #ifdef HAVE_SYS_BYTEORDER_H 54 #include <sys/byteorder.h> 55 #endif 56 57 #ifdef HAVE_SYS_MACHINE_H 58 #include <sys/machine.h> 59 #endif 60 61 #ifdef HAVE_MACHINE_PARAM_H 62 #include <machine/param.h> 63 #endif 64 65 #ifdef HAVE_SYS_ISA_DEFS_H 66 #include <sys/isa_defs.h> 67 #endif 68 69 #define _MHD_BIG_ENDIAN 1234 70 #define _MHD_LITTLE_ENDIAN 4321 71 #define _MHD_PDP_ENDIAN 2143 72 73 #if defined(__BYTE_ORDER__) 74 #if defined(__ORDER_BIG_ENDIAN__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ 75 #define _MHD_BYTE_ORDER _MHD_BIG_ENDIAN 76 #elif defined(__ORDER_LITTLE_ENDIAN__) && __BYTE_ORDER__ == \ 77 __ORDER_LITTLE_ENDIAN__ 78 #define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN 79 #elif defined(__ORDER_PDP_ENDIAN__) && __BYTE_ORDER__ == __ORDER_PDP_ENDIAN__ 80 #define _MHD_BYTE_ORDER _MHD_PDP_ENDIAN 81 #endif /* __BYTE_ORDER__ == __ORDER_PDP_ENDIAN__ */ 82 #elif defined(__BYTE_ORDER) 83 #if defined(__BIG_ENDIAN) && __BYTE_ORDER == __BIG_ENDIAN 84 #define _MHD_BYTE_ORDER _MHD_BIG_ENDIAN 85 #elif defined(__LITTLE_ENDIAN) && __BYTE_ORDER == __LITTLE_ENDIAN 86 #define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN 87 #elif defined(__PDP_ENDIAN) && __BYTE_ORDER == __PDP_ENDIAN 88 #define _MHD_BYTE_ORDER _MHD_PDP_ENDIAN 89 #endif /* __BYTE_ORDER == __PDP_ENDIAN */ 90 #elif defined(BYTE_ORDER) 91 #if defined(BIG_ENDIAN) && BYTE_ORDER == BIG_ENDIAN 92 #define _MHD_BYTE_ORDER _MHD_BIG_ENDIAN 93 #elif defined(LITTLE_ENDIAN) && BYTE_ORDER == LITTLE_ENDIAN 94 #define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN 95 #elif defined(PDP_ENDIAN) && BYTE_ORDER == PDP_ENDIAN 96 #define _MHD_BYTE_ORDER _MHD_PDP_ENDIAN 97 #endif /* __BYTE_ORDER == _PDP_ENDIAN */ 98 #elif defined(_BYTE_ORDER) 99 #if defined(_BIG_ENDIAN) && _BYTE_ORDER == _BIG_ENDIAN 100 #define _MHD_BYTE_ORDER _MHD_BIG_ENDIAN 101 #elif defined(_LITTLE_ENDIAN) && _BYTE_ORDER == _LITTLE_ENDIAN 102 #define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN 103 #elif defined(_PDP_ENDIAN) && _BYTE_ORDER == _PDP_ENDIAN 104 #define _MHD_BYTE_ORDER _MHD_PDP_ENDIAN 105 #endif /* _BYTE_ORDER == _PDP_ENDIAN */ 106 #endif /* _BYTE_ORDER */ 107 108 #ifndef _MHD_BYTE_ORDER 109 /* Byte order specification didn't detected in system headers */ 110 /* Try some guessing */ 111 112 #if (defined(__BIG_ENDIAN__) && ! defined(__LITTLE_ENDIAN__)) || \ 113 (defined(_BIG_ENDIAN) && ! defined(_LITTLE_ENDIAN)) 114 /* Seems that we are on big endian platform */ 115 #define _MHD_BYTE_ORDER _MHD_BIG_ENDIAN 116 #elif (defined(__LITTLE_ENDIAN__) && ! defined(__BIG_ENDIAN__)) || \ 117 (defined(_LITTLE_ENDIAN) && ! defined(_BIG_ENDIAN)) 118 /* Seems that we are on little endian platform */ 119 #define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN 120 #elif defined(__amd64__) || defined(__amd64) || defined(__x86_64__) || \ 121 defined(__x86_64) || \ 122 defined(_M_X64) || defined(_M_AMD64) || defined(i386) || defined(__i386) || \ 123 defined(__i386__) || defined(__i486__) || defined(__i586__) || \ 124 defined(__i686__) || \ 125 defined(_M_IX86) || defined(_X86_) || defined(__THW_INTEL__) 126 /* x86 family is little endian */ 127 #define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN 128 #elif defined(__ARMEB__) || defined(__THUMBEB__) || defined(__AARCH64EB__) || \ 129 defined(_MIPSEB) || defined(__MIPSEB) || defined(__MIPSEB__) 130 /* Looks like we are on ARM/MIPS in big endian mode */ 131 #define _MHD_BYTE_ORDER _MHD_BIG_ENDIAN 132 #elif defined(__ARMEL__) || defined(__THUMBEL__) || defined(__AARCH64EL__) || \ 133 defined(_MIPSEL) || defined(__MIPSEL) || defined(__MIPSEL__) 134 /* Looks like we are on ARM/MIPS in little endian mode */ 135 #define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN 136 #elif defined(__m68k__) || defined(M68000) || defined(__hppa__) || \ 137 defined(__hppa) || \ 138 defined(__HPPA__) || defined(__370__) || defined(__THW_370__) || \ 139 defined(__s390__) || defined(__s390x__) || defined(__SYSC_ZARCH__) 140 /* Looks like we are on big endian platform */ 141 #define _MHD_BYTE_ORDER _MHD_BIG_ENDIAN 142 #elif defined(__ia64__) || defined(_IA64) || defined(__IA64__) || \ 143 defined(__ia64) || \ 144 defined(_M_IA64) || defined(__itanium__) || defined(__bfin__) || \ 145 defined(__BFIN__) || defined(bfin) || defined(BFIN) 146 /* Looks like we are on little endian platform */ 147 #define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN 148 #elif defined(_WIN32) 149 /* W32 is always little endian on all platforms */ 150 #define _MHD_BYTE_ORDER _MHD_LITTLE_ENDIAN 151 #elif defined(WORDS_BIGENDIAN) 152 /* Use byte order detected by configure */ 153 #define _MHD_BYTE_ORDER _MHD_BIG_ENDIAN 154 #endif /* _WIN32 */ 155 156 #endif /* !_MHD_BYTE_ORDER */ 157 158 #ifdef _MHD_BYTE_ORDER 159 /* Some safety checks */ 160 #if defined(WORDS_BIGENDIAN) && _MHD_BYTE_ORDER != _MHD_BIG_ENDIAN 161 #error \ 162 Configure detected big endian byte order but headers specify different byte order 163 #elif ! defined(WORDS_BIGENDIAN) && _MHD_BYTE_ORDER == _MHD_BIG_ENDIAN 164 #error \ 165 Configure did not detect big endian byte order but headers specify big endian byte order 166 #endif /* !WORDS_BIGENDIAN && _MHD_BYTE_ORDER == _MHD_BIG_ENDIAN */ 167 #endif /* _MHD_BYTE_ORDER */ 168 169 #endif /* !MHD_BYTEORDER_H */