/* | |
--------------------------------------------------------------------------- | |
Copyright (c) 1998-2010, Brian Gladman, Worcester, UK. All rights reserved. | |
The redistribution and use of this software (with or without changes) | |
is allowed without the payment of fees or royalties provided that: | |
source code distributions include the above copyright notice, this | |
list of conditions and the following disclaimer; | |
binary distributions include the above copyright notice, this list | |
of conditions and the following disclaimer in their documentation. | |
This software is provided 'as is' with no explicit or implied warranties | |
in respect of its operation, including, but not limited to, correctness | |
and fitness for purpose. | |
--------------------------------------------------------------------------- | |
Issue Date: 20/12/2007 | |
*/ | |
#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) */ | |
/* 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 | |
/* 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 0 /* **** 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 126 or 128 in brg_endian.h to set the platform byte order | |
#endif | |
#endif | |
#endif |