DH-Keccak/assets/KremKeccak/brg_endian.h

   1 /*
   2  ---------------------------------------------------------------------------
   3  Copyright (c) 1998-2008, Brian Gladman, Worcester, UK. All rights reserved.
   4
   5  LICENSE TERMS
   6
   7  The redistribution and use of this software (with or without changes)
   8  is allowed without the payment of fees or royalties provided that:
   9
  10   1. source code distributions include the above copyright notice, this
  11      list of conditions and the following disclaimer;
  12
  13   2. binary distributions include the above copyright notice, this list
  14      of conditions and the following disclaimer in their documentation;
  15
  16   3. the name of the copyright holder is not used to endorse products
  17      built using this software without specific written permission.
  18
  19  DISCLAIMER
  20
  21  This software is provided 'as is' with no explicit or implied warranties
  22  in respect of its properties, including, but not limited to, correctness
  23  and/or fitness for purpose.
  24  ---------------------------------------------------------------------------
  25  Issue Date: 20/12/2007
  26  Changes for ARM 9/9/2010
  27 */
  28
  29 #ifndef _BRG_ENDIAN_H
  30 #define _BRG_ENDIAN_H
  31
  32 #define IS_BIG_ENDIAN      4321 /* byte 0 is most significant (mc68k) */
  33 #define IS_LITTLE_ENDIAN   1234 /* byte 0 is least significant (i386) */
  34
  35 #if 0
  36 /* Include files where endian defines and byteswap functions may reside */
  37 #if defined( __sun )
  38 #  include <sys/isa_defs.h>
  39 #elif defined( __FreeBSD__ ) || defined( __OpenBSD__ ) || defined( __NetBSD__ )
  40 #  include <sys/endian.h>
  41 #elif defined( BSD ) && ( BSD >= 199103 ) || defined( __APPLE__ ) || \
  42       defined( __CYGWIN32__ ) || defined( __DJGPP__ ) || defined( __osf__ )
  43 #  include <machine/endian.h>
  44 #elif defined( __linux__ ) || defined( __GNUC__ ) || defined( __GNU_LIBRARY__ )
  45 #  if !defined( __MINGW32__ ) && !defined( _AIX )
  46 #    include <endian.h>
  47 #    if !defined( __BEOS__ )
  48 #      include <byteswap.h>
  49 #    endif
  50 #  endif
  51 #endif
  52 #endif
  53
  54 /* Now attempt to set the define for platform byte order using any  */
  55 /* of the four forms SYMBOL, _SYMBOL, __SYMBOL & __SYMBOL__, which  */
  56 /* seem to encompass most endian symbol definitions                 */
  57
  58 #if defined( BIG_ENDIAN ) && defined( LITTLE_ENDIAN )
  59 #  if defined( BYTE_ORDER ) && BYTE_ORDER == BIG_ENDIAN
  60 #    define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
  61 #  elif defined( BYTE_ORDER ) && BYTE_ORDER == LITTLE_ENDIAN
  62 #    define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
  63 #  endif
  64 #elif defined( BIG_ENDIAN )
  65 #  define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
  66 #elif defined( LITTLE_ENDIAN )
  67 #  define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
  68 #endif
  69
  70 #if defined( _BIG_ENDIAN ) && defined( _LITTLE_ENDIAN )
  71 #  if defined( _BYTE_ORDER ) && _BYTE_ORDER == _BIG_ENDIAN
  72 #    define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
  73 #  elif defined( _BYTE_ORDER ) && _BYTE_ORDER == _LITTLE_ENDIAN
  74 #    define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
  75 #  endif
  76 #elif defined( _BIG_ENDIAN )
  77 #  define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
  78 #elif defined( _LITTLE_ENDIAN )
  79 #  define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
  80 #endif
  81
  82 #if defined( __BIG_ENDIAN ) && defined( __LITTLE_ENDIAN )
  83 #  if defined( __BYTE_ORDER ) && __BYTE_ORDER == __BIG_ENDIAN
  84 #    define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
  85 #  elif defined( __BYTE_ORDER ) && __BYTE_ORDER == __LITTLE_ENDIAN
  86 #    define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
  87 #  endif
  88 #elif defined( __BIG_ENDIAN )
  89 #  define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
  90 #elif defined( __LITTLE_ENDIAN )
  91 #  define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
  92 #endif
  93
  94 #if defined( __BIG_ENDIAN__ ) && defined( __LITTLE_ENDIAN__ )
  95 #  if defined( __BYTE_ORDER__ ) && __BYTE_ORDER__ == __BIG_ENDIAN__
  96 #    define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
  97 #  elif defined( __BYTE_ORDER__ ) && __BYTE_ORDER__ == __LITTLE_ENDIAN__
  98 #    define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
  99 #  endif
 100 #elif defined( __BIG_ENDIAN__ )
 101 #  define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
 102 #elif defined( __LITTLE_ENDIAN__ )
 103 #  define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
 104 #endif
 105
 106 /*  if the platform byte order could not be determined, then try to */
 107 /*  set this define using common machine defines                    */
 108 #if !defined(PLATFORM_BYTE_ORDER)
 109
 110 #if   defined( __alpha__ ) || defined( __alpha ) || defined( i386 )       || \
 111       defined( __i386__ )  || defined( _M_I86 )  || defined( _M_IX86 )    || \
 112       defined( __OS2__ )   || defined( sun386 )  || defined( __TURBOC__ ) || \
 113       defined( vax )       || defined( vms )     || defined( VMS )        || \
 114       defined( __VMS )     || defined( _M_X64 )
 115 #  define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
 116
 117 #elif defined( AMIGA )   || defined( applec )    || defined( __AS400__ )  || \
 118       defined( _CRAY )   || defined( __hppa )    || defined( __hp9000 )   || \
 119       defined( ibm370 )  || defined( mc68000 )   || defined( m68k )       || \
 120       defined( __MRC__ ) || defined( __MVS__ )   || defined( __MWERKS__ ) || \
 121       defined( sparc )   || defined( __sparc)    || defined( SYMANTEC_C ) || \
 122       defined( __VOS__ ) || defined( __TIGCC__ ) || defined( __TANDEM )   || \
 123       defined( THINK_C ) || defined( __VMCMS__ ) || defined( _AIX )
 124 #  define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
 125
 126 #elif defined(__arm__)
 127 # ifdef __BIG_ENDIAN
 128 #  define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
 129 # else
 130 #  define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
 131 # endif
 132 #elif 1     /* **** EDIT HERE IF NECESSARY **** */
 133 #  define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
 134 #elif 0     /* **** EDIT HERE IF NECESSARY **** */
 135 #  define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
 136 #else
 137 #  error Please edit lines 132 or 134 in brg_endian.h to set the platform byte order
 138 #endif
 139
 140 #endif
 141
 142 #endif