1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
/* $OpenBSD: endian.h,v 1.1 2004/01/28 01:39:39 mickey Exp $ */
/*-
* Copyright (c) 1997 Niklas Hallqvist. 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 Niklas Hallqvist.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#ifndef _I386_ENDIAN_H_
#define _I386_ENDIAN_H_
#ifdef __GNUC__
#define __swap32md(x) ({ \
u_int32_t __swap32md_x = (x); \
\
__asm ("bswap %1" : "+r" (__swap32md_x)); \
__swap32md_x; \
})
/* XXX - I'm sure there is a better way on this cpu. */
#define __swap64md(x) ({ \
u_int64_t __swap64md_x = (x); \
\
(u_int64_t)__swap32md(__swap64md_x >> 32) | \
(u_int64_t)__swap32md(__swap64md_x & 0xffffffff) << 32; \
})
#define __swap16md(x) ({ \
u_int16_t __swap16md_x = (x); \
\
__asm ("rorw $8, %w1" : "+r" (__swap16md_x)); \
__swap16md_x; \
})
/* Tell sys/endian.h we have MD variants of the swap macros. */
#define MD_SWAP
#endif /* __GNUC__ */
#define BYTE_ORDER LITTLE_ENDIAN
#include <sys/endian.h>
#endif /* _I386_ENDIAN_H_ */
|
