6e393973f5
headers into a related source file. Added cons.h as first step towards moving i386/i386/cons.h to machine/cons.h where it belongs.
115 lines
3.6 KiB
C
115 lines
3.6 KiB
C
/*
|
|
* Copyright (c) 1987, 1991 Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* from: @(#)endian.h 7.8 (Berkeley) 4/3/91
|
|
* $Id: endian.h,v 1.2 1993/10/16 14:39:15 rgrimes Exp $
|
|
*/
|
|
|
|
#ifndef _MACHINE_ENDIAN_H_
|
|
#define _MACHINE_ENDIAN_H_ 1
|
|
|
|
/*
|
|
* Definitions for byte order, according to byte significance from low
|
|
* address to high.
|
|
*/
|
|
#define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
|
|
#define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
|
|
#define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long */
|
|
|
|
#define BYTE_ORDER LITTLE_ENDIAN
|
|
|
|
#ifndef KERNEL
|
|
#include <sys/cdefs.h>
|
|
#endif
|
|
|
|
#define __word_swap_long(x) \
|
|
({ register u_long X = (x); \
|
|
asm ("rorl $16, %1" \
|
|
: "=r" (X) \
|
|
: "0" (X)); \
|
|
X; })
|
|
#if __GNUC__ >= 2
|
|
#define __byte_swap_long(x) \
|
|
({ register u_long X = (x); \
|
|
asm ("xchgb %h1, %b1\n\trorl $16, %1\n\txchgb %h1, %b1" \
|
|
: "=q" (X) \
|
|
: "0" (X)); \
|
|
X; })
|
|
#define __byte_swap_word(x) \
|
|
({ register u_short X = (x); \
|
|
asm ("xchgb %h1, %b1" \
|
|
: "=q" (X) \
|
|
: "0" (X)); \
|
|
X; })
|
|
#else /* __GNUC__ >= 2 */
|
|
#define __byte_swap_long(x) \
|
|
({ register u_long X = (x); \
|
|
asm ("rorw $8, %w1\n\trorl $16, %1\n\trorw $8, %w1" \
|
|
: "=r" (X) \
|
|
: "0" (X)); \
|
|
X; })
|
|
#define __byte_swap_word(x) \
|
|
({ register u_short X = (x); \
|
|
asm ("rorw $8, %w1" \
|
|
: "=r" (X) \
|
|
: "0" (X)); \
|
|
X; })
|
|
#endif /* __GNUC__ >= 2 */
|
|
|
|
/*
|
|
* Macros for network/external number representation conversion.
|
|
*/
|
|
#if BYTE_ORDER == BIG_ENDIAN && !defined(lint)
|
|
#define ntohl(x) (x)
|
|
#define ntohs(x) (x)
|
|
#define htonl(x) (x)
|
|
#define htons(x) (x)
|
|
|
|
#define NTOHL(x) (x)
|
|
#define NTOHS(x) (x)
|
|
#define HTONL(x) (x)
|
|
#define HTONS(x) (x)
|
|
|
|
#else
|
|
|
|
#define ntohl __byte_swap_long
|
|
#define ntohs __byte_swap_word
|
|
#define htonl __byte_swap_long
|
|
#define htons __byte_swap_word
|
|
|
|
#define NTOHL(x) (x) = ntohl((u_long)x)
|
|
#define NTOHS(x) (x) = ntohs((u_short)x)
|
|
#define HTONL(x) (x) = htonl((u_long)x)
|
|
#define HTONS(x) (x) = htons((u_short)x)
|
|
#endif
|
|
#endif /* _MACHINE_ENDIAN_H_ */
|