include/lttng/ust-endian.h

   1 #ifndef _LTTNG_UST_ENDIAN_H
   2 #define _LTTNG_UST_ENDIAN_H
   3
   4 /*
   5  * lttng/ust-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 #if (defined(__linux__) || defined(__CYGWIN__))
  31 #include <endian.h>
  32 #include <byteswap.h>
  33 #elif defined(__FreeBSD__)
  34 #include <sys/endian.h>
  35 #define bswap_16(x)     bswap16(x)
  36 #define bswap_32(x)     bswap32(x)
  37 #define bswap_64(x)     bswap64(x)
  38 #else
  39 #error "Please add support for your OS."
  40 #endif
  41
  42 /*
  43  * BYTE_ORDER, LITTLE_ENDIAN, and BIG_ENDIAN are only defined on Linux
  44  * if __USE_BSD is defined. Force their definition.
  45  */
  46 #ifndef BYTE_ORDER
  47 #define BYTE_ORDER __BYTE_ORDER
  48 #endif
  49
  50 #ifndef LITTLE_ENDIAN
  51 #define LITTLE_ENDIAN __LITTLE_ENDIAN
  52 #endif
  53
  54 #ifndef BIG_ENDIAN
  55 #define BIG_ENDIAN __BIG_ENDIAN
  56 #endif
  57
  58 #ifndef FLOAT_WORD_ORDER
  59 #ifdef __FLOAT_WORD_ORDER
  60 #define FLOAT_WORD_ORDER        __FLOAT_WORD_ORDER
  61 #else /* __FLOAT_WORD_ORDER */
  62 #define FLOAT_WORD_ORDER        BYTE_ORDER
  63 #endif /* __FLOAT_WORD_ORDER */
  64 #endif /* FLOAT_WORD_ORDER */
  65
  66 #endif /* _LTTNG_UST_ENDIAN_H */