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 #else
  85 #include <endian.h>
  86
  87 /*
  88  * htobe/betoh are not defined for glibc < 2.9, so add them explicitly
  89  * if they are missing.
  90  */
  91 # ifdef __USE_BSD
  92 /* Conversion interfaces. */
  93 #  include <byteswap.h>
  94
  95 #  if __BYTE_ORDER == __LITTLE_ENDIAN
  96 #   ifndef htobe16
  97 #    define htobe16(x) __bswap_16(x)
  98 #   endif
  99 #   ifndef htole16
 100 #    define htole16(x) (x)
 101 #   endif
 102 #   ifndef be16toh
 103 #    define be16toh(x) __bswap_16(x)
 104 #   endif
 105 #   ifndef le16toh
 106 #    define le16toh(x) (x)
 107 #   endif
 108
 109 #   ifndef htobe32
 110 #    define htobe32(x) __bswap_32(x)
 111 #   endif
 112 #   ifndef htole32
 113 #    define htole32(x) (x)
 114 #   endif
 115 #   ifndef be32toh
 116 #    define be32toh(x) __bswap_32(x)
 117 #   endif
 118 #   ifndef le32toh
 119 #    define le32toh(x) (x)
 120 #   endif
 121
 122 #   ifndef htobe64
 123 #    define htobe64(x) __bswap_64(x)
 124 #   endif
 125 #   ifndef htole64
 126 #    define htole64(x) (x)
 127 #   endif
 128 #   ifndef be64toh
 129 #    define be64toh(x) __bswap_64(x)
 130 #   endif
 131 #   ifndef le64toh
 132 #    define le64toh(x) (x)
 133 #   endif
 134
 135 #  else /* __BYTE_ORDER == __LITTLE_ENDIAN */
 136 #   ifndef htobe16
 137 #    define htobe16(x) (x)
 138 #   endif
 139 #   ifndef htole16
 140 #    define htole16(x) __bswap_16(x)
 141 #   endif
 142 #   ifndef be16toh
 143 #    define be16toh(x) (x)
 144 #   endif
 145 #   ifndef le16toh
 146 #    define le16toh(x) __bswap_16(x)
 147 #   endif
 148
 149 #   ifndef htobe32
 150 #    define htobe32(x) (x)
 151 #   endif
 152 #   ifndef htole32
 153 #    define htole32(x) __bswap_32(x)
 154 #   endif
 155 #   ifndef be32toh
 156 #    define be32toh(x) (x)
 157 #   endif
 158 #   ifndef le32toh
 159 #    define le32toh(x) __bswap_32(x)
 160 #   endif
 161
 162 #   ifndef htobe64
 163 #    define htobe64(x) (x)
 164 #   endif
 165 #   ifndef htole64
 166 #    define htole64(x) __bswap_64(x)
 167 #   endif
 168 #   ifndef be64toh
 169 #    define be64toh(x) (x)
 170 #   endif
 171 #   ifndef le64toh
 172 #    define le64toh(x) __bswap_64(x)
 173 #   endif
 174
 175 #  endif /* __BYTE_ORDER == __LITTLE_ENDIAN */
 176 # endif /* __USE_BSD */
 177 #endif /* else -- __FreeBSD__ */
 178
 179 #ifndef FLOAT_WORD_ORDER
 180 #ifdef __FLOAT_WORD_ORDER
 181 #define FLOAT_WORD_ORDER        __FLOAT_WORD_ORDER
 182 #else /* __FLOAT_WORD_ORDER */
 183 #define FLOAT_WORD_ORDER        BYTE_ORDER
 184 #endif /* __FLOAT_WORD_ORDER */
 185 #endif /* FLOAT_WORD_ORDER */
 186
 187 #endif /* _BABELTRACE_ENDIAN_H */