src/compat/endian.h

   1 #ifndef _BABELTRACE_ENDIAN_H
   2 #define _BABELTRACE_ENDIAN_H
   3
   4 /*
   5  * Copyright 2012 (c) - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   6  *
   7  * endian.h compatibility layer.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a copy
  10  * of this software and associated documentation files (the "Software"), to deal
  11  * in the Software without restriction, including without limitation the rights
  12  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  13  * copies of the Software, and to permit persons to whom the Software is
  14  * furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included in
  17  * all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  22  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  23  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  24  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  25  * SOFTWARE.
  26  */
  27
  28 #ifdef __FreeBSD__
  29 #include <machine/endian.h>
  30
  31 #elif defined(__sun__)
  32 #include <sys/byteorder.h>
  33
  34 #ifndef __BIG_ENDIAN
  35 #define __BIG_ENDIAN 4321
  36 #endif
  37 #ifndef __LITTLE_ENDIAN
  38 #define __LITTLE_ENDIAN 1234
  39 #endif
  40
  41 #ifdef _LITTLE_ENDIAN
  42 #define __BYTE_ORDER __LITTLE_ENDIAN
  43 #endif
  44
  45 #ifdef _BIG_ENDIAN
  46 #define __BYTE_ORDER __BIG_ENDIAN
  47 #endif
  48
  49 #define LITTLE_ENDIAN  __LITTLE_ENDIAN
  50 #define BIG_ENDIAN     __BIG_ENDIAN
  51 #define BYTE_ORDER     __BYTE_ORDER
  52
  53 #define betoh16(x) BE_16(x)
  54 #define letoh16(x) LE_16(x)
  55 #define betoh32(x) BE_32(x)
  56 #define letoh32(x) LE_32(x)
  57 #define betoh64(x) BE_64(x)
  58 #define letoh64(x) LE_64(x)
  59 #define htobe16(x) BE_16(x)
  60 #define be16toh(x) BE_16(x)
  61 #define htobe32(x) BE_32(x)
  62 #define be32toh(x) BE_32(x)
  63 #define htobe64(x) BE_64(x)
  64 #define be64toh(x) BE_64(x)
  65
  66 #elif defined(__MINGW32__)
  67 #include <stdint.h>
  68
  69 #ifndef __BIG_ENDIAN
  70 #define __BIG_ENDIAN 4321
  71 #endif
  72 #ifndef __LITTLE_ENDIAN
  73 #define __LITTLE_ENDIAN 1234
  74 #endif
  75
  76 #ifndef __BYTE_ORDER
  77 #define __BYTE_ORDER __LITTLE_ENDIAN
  78 #endif
  79
  80 #define LITTLE_ENDIAN  __LITTLE_ENDIAN
  81 #define BIG_ENDIAN     __BIG_ENDIAN
  82 #define PDP_ENDIAN     __PDP_ENDIAN
  83 #define BYTE_ORDER     __BYTE_ORDER
  84
  85 #define htobe16(x) (uint16_t) _byteswap_ushort(x)
  86 #define htole16(x) (x)
  87 #define be16toh(x) (uint16_t) _byteswap_ushort(x)
  88 #define le16toh(x) (x)
  89
  90 #define htobe32(x) (uint32_t) _byteswap_ulong(x)
  91 #define htole32(x) (x)
  92 #define be32toh(x) (uint32_t) _byteswap_ulong(x)
  93 #define le32toh(x) (x)
  94
  95 #define htobe64(x) (uint64_t) _byteswap_uint64(x)
  96 #define htole64(x) (x)
  97 #define be64toh(x) (uint64_t) _byteswap_uint64(x)
  98 #define le64toh(x) (x)
  99
 100 #elif defined(__APPLE__)
 101 # include <machine/endian.h>
 102 # include <libkern/OSByteOrder.h>
 103
 104 # if BYTE_ORDER == LITTLE_ENDIAN
 105 #  define htobe16(x) OSSwapConstInt16(x)
 106 #  define htole16(x) (x)
 107 #  define be16toh(x) OSSwapConstInt16(x)
 108 #  define le16toh(x) (x)
 109
 110 #  define htobe32(x) OSSwapConstInt32(x)
 111 #  define htole32(x) (x)
 112 #  define be32toh(x) OSSwapConstInt32(x)
 113 #  define le32toh(x) (x)
 114
 115 #  define htobe64(x) OSSwapConstInt64(x)
 116 #  define htole64(x) (x)
 117 #  define be64toh(x) OSSwapConstInt64(x)
 118 #  define le64toh(x) (x)
 119
 120 # else /* BYTE_ORDER == LITTLE_ENDIAN */
 121 #  define htobe16(x) (x)
 122 #  define htole16(x) OSSwapConstInt16(x)
 123 #  define be16toh(x) (x)
 124 #  define le16toh(x) OSSwapConstInt16(x)
 125
 126 #  define htobe32(x) (x)
 127 #  define htole32(x) OSSwapConstInt32(x)
 128 #  define be32toh(x) (x)
 129 #  define le32toh(x) OSSwapConstInt32(x)
 130
 131 #  define htobe64(x) (x)
 132 #  define htole64(x) OSSwapConstInt64(x)
 133 #  define be64toh(x) (x)
 134 #  define le64toh(x) OSSwapConstInt64(x)
 135 #  endif
 136
 137 #else
 138 #include <endian.h>
 139
 140 /*
 141  * htobe/betoh are not defined for glibc < 2.9, so add them explicitly
 142  * if they are missing.
 143  */
 144 # ifdef __USE_BSD
 145 /* Conversion interfaces. */
 146 #  include <byteswap.h>
 147
 148 #  if __BYTE_ORDER == __LITTLE_ENDIAN
 149 #   ifndef htobe16
 150 #    define htobe16(x) __bswap_16(x)
 151 #   endif
 152 #   ifndef htole16
 153 #    define htole16(x) (x)
 154 #   endif
 155 #   ifndef be16toh
 156 #    define be16toh(x) __bswap_16(x)
 157 #   endif
 158 #   ifndef le16toh
 159 #    define le16toh(x) (x)
 160 #   endif
 161
 162 #   ifndef htobe32
 163 #    define htobe32(x) __bswap_32(x)
 164 #   endif
 165 #   ifndef htole32
 166 #    define htole32(x) (x)
 167 #   endif
 168 #   ifndef be32toh
 169 #    define be32toh(x) __bswap_32(x)
 170 #   endif
 171 #   ifndef le32toh
 172 #    define le32toh(x) (x)
 173 #   endif
 174
 175 #   ifndef htobe64
 176 #    define htobe64(x) __bswap_64(x)
 177 #   endif
 178 #   ifndef htole64
 179 #    define htole64(x) (x)
 180 #   endif
 181 #   ifndef be64toh
 182 #    define be64toh(x) __bswap_64(x)
 183 #   endif
 184 #   ifndef le64toh
 185 #    define le64toh(x) (x)
 186 #   endif
 187
 188 #  else /* __BYTE_ORDER == __LITTLE_ENDIAN */
 189 #   ifndef htobe16
 190 #    define htobe16(x) (x)
 191 #   endif
 192 #   ifndef htole16
 193 #    define htole16(x) __bswap_16(x)
 194 #   endif
 195 #   ifndef be16toh
 196 #    define be16toh(x) (x)
 197 #   endif
 198 #   ifndef le16toh
 199 #    define le16toh(x) __bswap_16(x)
 200 #   endif
 201
 202 #   ifndef htobe32
 203 #    define htobe32(x) (x)
 204 #   endif
 205 #   ifndef htole32
 206 #    define htole32(x) __bswap_32(x)
 207 #   endif
 208 #   ifndef be32toh
 209 #    define be32toh(x) (x)
 210 #   endif
 211 #   ifndef le32toh
 212 #    define le32toh(x) __bswap_32(x)
 213 #   endif
 214
 215 #   ifndef htobe64
 216 #    define htobe64(x) (x)
 217 #   endif
 218 #   ifndef htole64
 219 #    define htole64(x) __bswap_64(x)
 220 #   endif
 221 #   ifndef be64toh
 222 #    define be64toh(x) (x)
 223 #   endif
 224 #   ifndef le64toh
 225 #    define le64toh(x) __bswap_64(x)
 226 #   endif
 227
 228 #  endif /* __BYTE_ORDER == __LITTLE_ENDIAN */
 229 # endif /* __USE_BSD */
 230 #endif /* else -- __FreeBSD__ */
 231
 232 #ifndef FLOAT_WORD_ORDER
 233 #ifdef __FLOAT_WORD_ORDER
 234 #define FLOAT_WORD_ORDER        __FLOAT_WORD_ORDER
 235 #else /* __FLOAT_WORD_ORDER */
 236 #define FLOAT_WORD_ORDER        BYTE_ORDER
 237 #endif /* __FLOAT_WORD_ORDER */
 238 #endif /* FLOAT_WORD_ORDER */
 239
 240 #endif /* _BABELTRACE_ENDIAN_H */