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udf_bswap.h revision 1.4.68.1 
      1 /* $NetBSD: udf_bswap.h,v 1.4.68.1 2008/05/18 12:35:05 yamt Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1998 Manuel Bouyer.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *	This product includes software developed by the University of
     17  *	California, Berkeley and its contributors.
     18  * 4. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  *
     33  * adapted for UDF by Reinoud Zandijk <reinoud (at) netbsd.org>
     34  *
     35  */
     36 
     37 #ifndef _FS_UDF_UDF_BSWAP_H_
     38 #define _FS_UDF_UDF_BSWAP_H_
     39 
     40 #if HAVE_ENDIAN_H
     41 #include <endian.h>
     42 #else
     43 #if HAVE_SYS_ENDIAN_H
     44 #include <sys/endian.h>
     45 #else
     46 #if HAVE_MACHINE_ENDIAN_H
     47 #include <machine/endian.h>
     48 #endif
     49 #endif
     50 #endif
     51 
     52 /* rest only relevant for big endian machines */
     53 #if (BYTE_ORDER == BIG_ENDIAN)
     54 
     55 #include <machine/bswap.h>
     56 #include <sys/bswap.h>
     57 
     58 /* inlines for access to swapped data */
     59 static __inline u_int16_t udf_rw16(u_int16_t);
     60 static __inline u_int32_t udf_rw32(u_int32_t);
     61 static __inline u_int64_t udf_rw64(u_int64_t);
     62 
     63 
     64 static __inline u_int16_t
     65 udf_rw16(a)
     66 	u_int16_t a;
     67 {
     68 	return bswap16(a);
     69 }
     70 
     71 
     72 static __inline u_int32_t
     73 udf_rw32(a)
     74 	u_int32_t a;
     75 {
     76 	return bswap32(a);
     77 }
     78 
     79 
     80 static __inline u_int64_t
     81 udf_rw64(a)
     82 	u_int64_t a;
     83 {
     84 	return bswap64(a);
     85 }
     86 
     87 #else
     88 
     89 #define udf_rw16(a) ((uint16_t)(a))
     90 #define udf_rw32(a) ((uint32_t)(a))
     91 #define udf_rw64(a) ((uint64_t)(a))
     92 
     93 #endif
     94 
     95 
     96 #endif /* !_FS_UDF_UDF_BSWAP_H_ */
     97