c64e115f |
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 |