reactos/sdk/tools/mkisofs/schilytools/include/schily/btorder.h

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/* @(#)btorder.h 1.22 12/12/03 Copyright 1996-2012 J. Schilling */
/*
* Definitions for Bit and Byte ordering
*
* Copyright (c) 1996-2012 J. Schilling
*/
/*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* See the file CDDL.Schily.txt in this distribution for details.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file CDDL.Schily.txt from this distribution.
*/
#ifndef _SCHILY_BTORDER_H
#define _SCHILY_BTORDER_H
#ifndef _SCHILY_MCONFIG_H
#include <schily/mconfig.h> /* load bit/byte-oder from xmconfig.h */
#endif
#ifndef _SCHILY_TYPES_H
#include <schily/types.h> /* try to load isa_defs.h on Solaris */
#endif
#ifdef __cplusplus
extern "C" {
#endif
/*
* Convert bit-order definitions from xconfig.h into our values
* and verify them.
*/
#if defined(HAVE_C_BITFIELDS) && \
defined(BITFIELDS_LTOH)
#define _BIT_FIELDS_LTOH
#endif
#if defined(HAVE_C_BITFIELDS) && \
defined(BITFIELDS_HTOL)
#define _BIT_FIELDS_HTOL
#endif
#if defined(HAVE_C_BITFIELDS) && \
!defined(BITFIELDS_HTOL)
#define BITFIELDS_LTOH
#define _BIT_FIELDS_LTOH
#endif
#if defined(_BIT_FIELDS_LTOH) && defined(_BIT_FIELDS_HTOL)
/*
* #error will not work for all compilers (e.g. sunos4)
* The following line will abort compilation on all compilers
* if none of the above is defined. And that's what we want.
*/
error Only one of _BIT_FIELDS_LTOH or _BIT_FIELDS_HTOL may be defined
#include <schily/err_bit.h> /* Avoid "unknown directive" with K&R */
#endif
/*
* Convert byte-order definitions from xconfig.h into our values
* and verify them.
* Note that we cannot use the definitions _LITTLE_ENDIAN and _BIG_ENDIAN
* because they are used on IRIX-6.5 with different meaning.
*/
#if defined(HAVE_C_BIGENDIAN) && \
!defined(WORDS_BIGENDIAN)
#define WORDS_LITTLEENDIAN
/* #define _LITTLE_ENDIAN */
#endif
#if defined(HAVE_C_BIGENDIAN) && \
defined(WORDS_BIGENDIAN)
#undef WORDS_LITTLEENDIAN
/* #define _BIG_ENDIAN */
#endif
#if defined(_BIT_FIELDS_LTOH) || defined(_BIT_FIELDS_HTOL)
/*
* Bitorder is already known.
*/
#else
/*
* Bitorder not yet known.
*/
# if defined(sun3) || defined(mc68000) || \
defined(sun4) || defined(__sparc) || defined(sparc) || \
defined(__hppa) || defined(_ARCH_PPC) || defined(_IBMR2)
# define _BIT_FIELDS_HTOL
# endif
# if defined(__sgi) && defined(__mips)
# define _BIT_FIELDS_HTOL
# endif
# if defined(__i386__) || defined(__i386) || defined(i386) || \
defined(__alpha__) || defined(__alpha) || defined(alpha) || \
defined(__arm__) || defined(__arm) || defined(arm)
# define _BIT_FIELDS_LTOH
# endif
# if defined(__ppc__) || defined(ppc) || defined(__ppc) || \
defined(__PPC) || defined(powerpc) || defined(__powerpc__)
# if defined(__BIG_ENDIAN__)
# define _BIT_FIELDS_HTOL
# else
# define _BIT_FIELDS_LTOH
# endif
# endif
#endif
#ifdef __cplusplus
}
#endif
#endif /* _SCHILY_BTORDER_H */