include/lttng/ust-endian.h

   1 /*
   2  * SPDX-License-Identifier: MIT
   3  *
   4  * Copyright (C) 2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
   5  *
   6  * endian.h compatibility layer.
   7  */
   8
   9 #ifndef _LTTNG_UST_ENDIAN_H
  10 #define _LTTNG_UST_ENDIAN_H
  11
  12 #if (defined(__linux__) || defined(__CYGWIN__))
  13 #include <endian.h>
  14 #include <byteswap.h>
  15 #elif defined(__FreeBSD__)
  16 #include <sys/endian.h>
  17 #define bswap_16(x)     bswap16(x)
  18 #define bswap_32(x)     bswap32(x)
  19 #define bswap_64(x)     bswap64(x)
  20 #else
  21 #error "Please add support for your OS."
  22 #endif
  23
  24 /*
  25  * BYTE_ORDER, LITTLE_ENDIAN, and BIG_ENDIAN are only defined on Linux
  26  * if __USE_BSD is defined. Force their definition.
  27  */
  28 #ifndef BYTE_ORDER
  29 #define BYTE_ORDER __BYTE_ORDER
  30 #endif
  31
  32 #ifndef LITTLE_ENDIAN
  33 #define LITTLE_ENDIAN __LITTLE_ENDIAN
  34 #endif
  35
  36 #ifndef BIG_ENDIAN
  37 #define BIG_ENDIAN __BIG_ENDIAN
  38 #endif
  39
  40 #ifndef FLOAT_WORD_ORDER
  41 #ifdef __FLOAT_WORD_ORDER
  42 #define FLOAT_WORD_ORDER        __FLOAT_WORD_ORDER
  43 #else /* __FLOAT_WORD_ORDER */
  44 #define FLOAT_WORD_ORDER        BYTE_ORDER
  45 #endif /* __FLOAT_WORD_ORDER */
  46 #endif /* FLOAT_WORD_ORDER */
  47
  48 #endif /* _LTTNG_UST_ENDIAN_H */