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endian.h revision 1.6 
      1 /*	$NetBSD: endian.h,v 1.6 1999/01/24 12:55:02 mycroft Exp $	*/
      2 
      3 /*-
      4  * Copyright (C) 1995 Wolfgang Solfrank.
      5  * Copyright (C) 1995 TooLs GmbH.
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *	This product includes software developed by TooLs GmbH.
     19  * 4. The name of TooLs GmbH may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     27  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     28  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     29  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     30  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     31  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 #ifndef	_PPC_ENDIAN_H_
     35 #define	_PPC_ENDIAN_H_
     36 
     37 #ifndef	_POSIX_SOURCE
     38 
     39 #define _QUAD_HIGHWORD	0
     40 #define _QUAD_LOWWORD	1
     41 
     42 /*
     43  * Definitions for byte order, according to byte significance from low
     44  * address to high.
     45  */
     46 #define	LITTLE_ENDIAN	1234	/* LSB first: i386, vax */
     47 #define	BIG_ENDIAN	4321	/* MSB first: 68000, ibm, net */
     48 #define	PDP_ENDIAN	3412	/* LSB first in word, MSW first in long */
     49 
     50 #define	BYTE_ORDER	BIG_ENDIAN	/* for now */
     51 
     52 #include <sys/cdefs.h>
     53 
     54 typedef u_int32_t	in_addr_t;
     55 typedef u_int16_t	in_port_t;
     56 
     57 __BEGIN_DECLS
     58 in_addr_t	htonl __P((in_addr_t)) __attribute__((__const__));
     59 in_port_t	htons __P((in_port_t)) __attribute__((__const__));
     60 in_addr_t	ntohl __P((in_addr_t)) __attribute__((__const__));
     61 in_port_t	ntohs __P((in_port_t)) __attribute__((__const__));
     62 __END_DECLS
     63 
     64 /*
     65  * Macros for network/external number representation conversion.
     66  */
     67 #if BYTE_ORDER == BIG_ENDIAN && !defined(lint)
     68 #define	ntohl(x)	(x)
     69 #define	ntohs(x)	(x)
     70 #define	htonl(x)	(x)
     71 #define	htons(x)	(x)
     72 
     73 #define	NTOHL(x)	(void) (x)
     74 #define	NTOHS(x)	(void) (x)
     75 #define	HTONL(x)	(void) (x)
     76 #define	HTONS(x)	(void) (x)
     77 
     78 #else
     79 
     80 #define	NTOHL(x)	(x) = ntohl((in_addr_t)(x))
     81 #define	NTOHS(x)	(x) = ntohs((in_port_t)(x))
     82 #define	HTONL(x)	(x) = htonl((in_addr_t)(x))
     83 #define	HTONS(x)	(x) = htons((in_port_t)(x))
     84 #endif
     85 
     86 #endif	/* _POSIX_SOURCE */
     87 #endif	/* _PPC_ENDIAN_H_ */
     88