btorder.h
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上传日期:2007-01-06
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- /* @(#)btorder.h 1.9 99/04/29 Copyright 1996 J. Schilling */
- /*
- * Definitions for Bitordering
- *
- * Copyright (c) 1996 J. Schilling
- */
- /*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- */
- #ifndef _BTORDER_H
- #define _BTORDER_H
- #include <sys/types.h> /* try to load isa_defs.h on Solaris */
- #ifndef _MCONFIG_H
- #include <mconfig.h>
- #endif
- #if defined(BIT_FIELDS_LTOH) /* Use definition from xconfig.h */
- #define _BIT_FIELDS_LTOH
- #endif
- #if defined(BIT_FIELDS_HTOL) /* Use definition from xconfig.h */
- #define _BIT_FIELDS_HTOL
- #endif
- #if defined(_BIT_FIELDS_LTOH) || defined(_BIT_FIELDS_HTOL)
- /*
- * Bitorder is known.
- */
- #else
- /*
- * Bitorder not 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(__alpha) || defined(alpha) ||
- defined(__arm) || defined(arm)
- # define _BIT_FIELDS_LTOH
- # endif
- # if defined(__ppc__) || defined(ppc) || defined(__ppc) ||
- defined(__PPC) || defined(powerpc)
- # if defined(__BIG_ENDIAN__)
- # define _BIT_FIELDS_HTOL
- # else
- # define _BIT_FIELDS_LTOH
- # endif
- # endif
- #endif
- #endif /* _BTORDER_H */