summaryrefslogtreecommitdiffstats
path: root/Modules/_sha3/keccak/brg_endian.h
blob: 7226eb3bec51aec2b77d028958cf0f80c31fe6f6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
/*
 ---------------------------------------------------------------------------
 Copyright (c) 1998-2008, Brian Gladman, Worcester, UK. All rights reserved.

 LICENSE TERMS

 The redistribution and use of this software (with or without changes)
 is allowed without the payment of fees or royalties provided that:

  1. source code distributions include the above copyright notice, this
     list of conditions and the following disclaimer;

  2. binary distributions include the above copyright notice, this list
     of conditions and the following disclaimer in their documentation;

  3. the name of the copyright holder is not used to endorse products
     built using this software without specific written permission.

 DISCLAIMER

 This software is provided 'as is' with no explicit or implied warranties
 in respect of its properties, including, but not limited to, correctness
 and/or fitness for purpose.
 ---------------------------------------------------------------------------
 Issue Date: 20/12/2007
 Changes for ARM 9/9/2010
*/

#ifndef _BRG_ENDIAN_H
#define _BRG_ENDIAN_H

#define IS_BIG_ENDIAN      4321 /* byte 0 is most significant (mc68k) */
#define IS_LITTLE_ENDIAN   1234 /* byte 0 is least significant (i386) */

#if 0
/* Include files where endian defines and byteswap functions may reside */
#if defined( __sun )
#  include <sys/isa_defs.h>
#elif defined( __FreeBSD__ ) || defined( __OpenBSD__ ) || defined( __NetBSD__ )
#  include <sys/endian.h>
#elif defined( BSD ) && ( BSD >= 199103 ) || defined( __APPLE__ ) || \
      defined( __CYGWIN32__ ) || defined( __DJGPP__ ) || defined( __osf__ )
#  include <machine/endian.h>
#elif defined( __linux__ ) || defined( __GNUC__ ) || defined( __GNU_LIBRARY__ )
#  if !defined( __MINGW32__ ) && !defined( _AIX )
#    include <endian.h>
#    if !defined( __BEOS__ )
#      include <byteswap.h>
#    endif
#  endif
#endif
#endif

/* Now attempt to set the define for platform byte order using any  */
/* of the four forms SYMBOL, _SYMBOL, __SYMBOL & __SYMBOL__, which  */
/* seem to encompass most endian symbol definitions                 */

#if defined( BIG_ENDIAN ) && defined( LITTLE_ENDIAN )
#  if defined( BYTE_ORDER ) && BYTE_ORDER == BIG_ENDIAN
#    define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
#  elif defined( BYTE_ORDER ) && BYTE_ORDER == LITTLE_ENDIAN
#    define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
#  endif
#elif defined( BIG_ENDIAN )
#  define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
#elif defined( LITTLE_ENDIAN )
#  define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
#endif

#if defined( _BIG_ENDIAN ) && defined( _LITTLE_ENDIAN )
#  if defined( _BYTE_ORDER ) && _BYTE_ORDER == _BIG_ENDIAN
#    define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
#  elif defined( _BYTE_ORDER ) && _BYTE_ORDER == _LITTLE_ENDIAN
#    define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
#  endif
#elif defined( _BIG_ENDIAN )
#  define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
#elif defined( _LITTLE_ENDIAN )
#  define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
#endif

#if defined( __BIG_ENDIAN ) && defined( __LITTLE_ENDIAN )
#  if defined( __BYTE_ORDER ) && __BYTE_ORDER == __BIG_ENDIAN
#    define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
#  elif defined( __BYTE_ORDER ) && __BYTE_ORDER == __LITTLE_ENDIAN
#    define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
#  endif
#elif defined( __BIG_ENDIAN )
#  define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
#elif defined( __LITTLE_ENDIAN )
#  define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
#endif

#if defined( __BIG_ENDIAN__ ) && defined( __LITTLE_ENDIAN__ )
#  if defined( __BYTE_ORDER__ ) && __BYTE_ORDER__ == __BIG_ENDIAN__
#    define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
#  elif defined( __BYTE_ORDER__ ) && __BYTE_ORDER__ == __LITTLE_ENDIAN__
#    define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
#  endif
#elif defined( __BIG_ENDIAN__ )
#  define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
#elif defined( __LITTLE_ENDIAN__ )
#  define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
#endif

/*  if the platform byte order could not be determined, then try to */
/*  set this define using common machine defines                    */
#if !defined(PLATFORM_BYTE_ORDER)

#if   defined( __alpha__ ) || defined( __alpha ) || defined( i386 )       || \
      defined( __i386__ )  || defined( _M_I86 )  || defined( _M_IX86 )    || \
      defined( __OS2__ )   || defined( sun386 )  || defined( __TURBOC__ ) || \
      defined( vax )       || defined( vms )     || defined( VMS )        || \
      defined( __VMS )     || defined( _M_X64 )
#  define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN

#elif defined( AMIGA )   || defined( applec )    || defined( __AS400__ )  || \
      defined( _CRAY )   || defined( __hppa )    || defined( __hp9000 )   || \
      defined( ibm370 )  || defined( mc68000 )   || defined( m68k )       || \
      defined( __MRC__ ) || defined( __MVS__ )   || defined( __MWERKS__ ) || \
      defined( sparc )   || defined( __sparc)    || defined( SYMANTEC_C ) || \
      defined( __VOS__ ) || defined( __TIGCC__ ) || defined( __TANDEM )   || \
      defined( THINK_C ) || defined( __VMCMS__ ) || defined( _AIX )
#  define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN

#elif defined(__arm__)
# ifdef __BIG_ENDIAN
#  define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
# else
#  define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
# endif
#elif 1     /* **** EDIT HERE IF NECESSARY **** */
#  define PLATFORM_BYTE_ORDER IS_LITTLE_ENDIAN
#elif 0     /* **** EDIT HERE IF NECESSARY **** */
#  define PLATFORM_BYTE_ORDER IS_BIG_ENDIAN
#else
#  error Please edit lines 132 or 134 in brg_endian.h to set the platform byte order
#endif

#endif

#endif