106 lines
3.1 KiB
C
106 lines
3.1 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.
|
|
*
|
|
* @(#)endian.h 7.8 (Berkeley) 4/3/91
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _MACHINE_ENDIAN_H_
|
|
#define _MACHINE_ENDIAN_H_
|
|
|
|
#include <sys/cdefs.h>
|
|
#include <machine/ansi.h>
|
|
|
|
/*
|
|
* Define the order of 32-bit words in 64-bit words.
|
|
*/
|
|
#define _QUAD_HIGHWORD 1
|
|
#define _QUAD_LOWWORD 0
|
|
|
|
/*
|
|
* Definitions for byte order, according to byte significance from low
|
|
* address to high.
|
|
*/
|
|
#ifndef _POSIX_SOURCE
|
|
#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
|
|
#endif /* ! _POSIX_SOURCE */
|
|
|
|
#ifdef __GNUC__
|
|
|
|
__BEGIN_DECLS
|
|
|
|
static __inline __uint32_t
|
|
__htonl(__uint32_t __x)
|
|
{
|
|
#if defined(_KERNEL) && (defined(I486_CPU) || defined(I586_CPU) || defined(I686_CPU)) && !defined(I386_CPU)
|
|
__asm ("bswap %0" : "+r" (__x));
|
|
#else
|
|
__asm ("xchgb %h0, %b0\n\t"
|
|
"rorl $16, %0\n\t"
|
|
"xchgb %h0, %b0"
|
|
: "+q" (__x));
|
|
#endif
|
|
return __x;
|
|
}
|
|
|
|
static __inline __uint16_t
|
|
__htons(__uint16_t __x)
|
|
{
|
|
__asm ("xchgb %h0, %b0" : "+q" (__x));
|
|
|
|
return __x;
|
|
}
|
|
|
|
static __inline __uint32_t
|
|
__ntohl(__uint32_t __x)
|
|
{
|
|
|
|
return (__htonl(__x));
|
|
}
|
|
|
|
static __inline __uint16_t
|
|
__ntohs(__uint16_t __x)
|
|
{
|
|
|
|
return (__htons(__x));
|
|
}
|
|
|
|
__END_DECLS
|
|
|
|
#endif /* __GNUC__ */
|
|
|
|
#endif /* !_MACHINE_ENDIAN_H_ */
|