include/babeltrace/endian.h

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