lib/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 #elif defined(__MINGW32__)
  33 #ifndef __BIG_ENDIAN
  34 #define __BIG_ENDIAN 4321
  35 #endif
  36 #ifndef __LITTLE_ENDIAN
  37 #define __LITTLE_ENDIAN 1234
  38 #endif
  39
  40 #ifndef __BYTE_ORDER
  41 #define __BYTE_ORDER __LITTLE_ENDIAN
  42 #endif
  43
  44 #define LITTLE_ENDIAN  __LITTLE_ENDIAN
  45 #define BIG_ENDIAN     __BIG_ENDIAN
  46 #define PDP_ENDIAN     __PDP_ENDIAN
  47 #define BYTE_ORDER     __BYTE_ORDER
  48 #else
  49 #include <endian.h>
  50
  51 /*
  52  * htobe/betoh are not defined for glibc < 2.9, so add them explicitly
  53  * if they are missing.
  54  */
  55 # ifdef __USE_BSD
  56 /* Conversion interfaces. */
  57 #  include <byteswap.h>
  58
  59 #  if __BYTE_ORDER == __LITTLE_ENDIAN
  60 #   ifndef htobe16
  61 #    define htobe16(x) __bswap_16(x)
  62 #   endif
  63 #   ifndef htole16
  64 #    define htole16(x) (x)
  65 #   endif
  66 #   ifndef be16toh
  67 #    define be16toh(x) __bswap_16(x)
  68 #   endif
  69 #   ifndef le16toh
  70 #    define le16toh(x) (x)
  71 #   endif
  72
  73 #   ifndef htobe32
  74 #    define htobe32(x) __bswap_32(x)
  75 #   endif
  76 #   ifndef htole32
  77 #    define htole32(x) (x)
  78 #   endif
  79 #   ifndef be32toh
  80 #    define be32toh(x) __bswap_32(x)
  81 #   endif
  82 #   ifndef le32toh
  83 #    define le32toh(x) (x)
  84 #   endif
  85
  86 #   ifndef htobe64
  87 #    define htobe64(x) __bswap_64(x)
  88 #   endif
  89 #   ifndef htole64
  90 #    define htole64(x) (x)
  91 #   endif
  92 #   ifndef be64toh
  93 #    define be64toh(x) __bswap_64(x)
  94 #   endif
  95 #   ifndef le64toh
  96 #    define le64toh(x) (x)
  97 #   endif
  98
  99 #  else /* __BYTE_ORDER == __LITTLE_ENDIAN */
 100 #   ifndef htobe16
 101 #    define htobe16(x) (x)
 102 #   endif
 103 #   ifndef htole16
 104 #    define htole16(x) __bswap_16(x)
 105 #   endif
 106 #   ifndef be16toh
 107 #    define be16toh(x) (x)
 108 #   endif
 109 #   ifndef le16toh
 110 #    define le16toh(x) __bswap_16(x)
 111 #   endif
 112
 113 #   ifndef htobe32
 114 #    define htobe32(x) (x)
 115 #   endif
 116 #   ifndef htole32
 117 #    define htole32(x) __bswap_32(x)
 118 #   endif
 119 #   ifndef be32toh
 120 #    define be32toh(x) (x)
 121 #   endif
 122 #   ifndef le32toh
 123 #    define le32toh(x) __bswap_32(x)
 124 #   endif
 125
 126 #   ifndef htobe64
 127 #    define htobe64(x) (x)
 128 #   endif
 129 #   ifndef htole64
 130 #    define htole64(x) __bswap_64(x)
 131 #   endif
 132 #   ifndef be64toh
 133 #    define be64toh(x) (x)
 134 #   endif
 135 #   ifndef le64toh
 136 #    define le64toh(x) __bswap_64(x)
 137 #   endif
 138
 139 #  endif /* __BYTE_ORDER == __LITTLE_ENDIAN */
 140 # endif /* __USE_BSD */
 141 #endif /* else -- __FreeBSD__ */
 142
 143 #ifndef FLOAT_WORD_ORDER
 144 #ifdef __FLOAT_WORD_ORDER
 145 #define FLOAT_WORD_ORDER        __FLOAT_WORD_ORDER
 146 #else /* __FLOAT_WORD_ORDER */
 147 #define FLOAT_WORD_ORDER        BYTE_ORDER
 148 #endif /* __FLOAT_WORD_ORDER */
 149 #endif /* FLOAT_WORD_ORDER */
 150
 151 #endif /* _BABELTRACE_ENDIAN_H */