git.zerfleddert.de Git - proxmark3-svn/blob - client/proxendian.h

   1 //-----------------------------------------------------------------------------
   2 // Copyright (C) 2010 Hector Martin "marcan" <marcan@marcansoft.com>
   3 //
   4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   5 // at your option, any later version. See the LICENSE.txt file for the text of
   6 // the license.
   7 //-----------------------------------------------------------------------------
   8 // Endianness convenience functions
   9 //-----------------------------------------------------------------------------
  10
  11 #ifndef PROXENDIAN_H__
  12 #define PROXENDIAN_H__
  13
  14 #include <stdint.h>
  15
  16 #ifdef WIN32
  17 # define HOST_LITTLE_ENDIAN
  18 #else
  19 # include <sys/types.h>
  20
  21 # if !defined(BYTE_ORDER) || (BYTE_ORDER != LITTLE_ENDIAN && BYTE_ORDER != BIG_ENDIAN)
  22 #  error Define BYTE_ORDER to be equal to either LITTLE_ENDIAN or BIG_ENDIAN
  23 # endif
  24
  25 # if BYTE_ORDER == LITTLE_ENDIAN
  26 #  define HOST_LITTLE_ENDIAN
  27 # endif
  28 #endif
  29
  30 #ifdef HOST_LITTLE_ENDIAN
  31 # define le16(x) (x)
  32 # define le32(x) (x)
  33 #else
  34
  35 static inline uint16_t le16(uint16_t v)
  36 {
  37         return (v>>8) | (v<<8);
  38 }
  39
  40 static inline uint32_t le32(uint32_t v)
  41 {
  42         return (le16(v)<<16) | (le16(v>>16));
  43 }
  44 #endif // HOST_LITTLE_ENDIAN
  45
  46 #endif // PROXENDIAN_H__