Annotation of sys/arch/m68k/include/endian.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: endian.h,v 1.15 2005/12/13 00:35:23 millert Exp $ */
2:
3: /*-
4: * Copyright (c) 1997 Niklas Hallqvist. All rights reserved.
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: *
15: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25: */
26:
27: #ifndef _M68K_ENDIAN_H_
28: #define _M68K_ENDIAN_H_
29:
30: #ifdef __GNUC__
31:
32: #define __swap64md __swap64gen
33:
34: #define __swap32md(x) ({ \
35: u_int32_t __swap32md_x = (x); \
36: \
37: __asm ("rorw #8, %0; swap %0; rorw #8, %0" : \
38: "=d" (__swap32md_x) : "0" (__swap32md_x)); \
39: __swap32md_x; \
40: })
41:
42: #define __swap16md(x) ({ \
43: u_int16_t __swap16md_x = (x); \
44: \
45: __asm ("rorw #8, %0" : "=d" (__swap16md_x) : \
46: "0" (__swap16md_x)); \
47: __swap16md_x; \
48: })
49:
50: /* Tell sys/endian.h we have MD variants of the swap macros. */
51: #define MD_SWAP
52:
53: #endif /* __GNUC__ */
54:
55: #define _BYTE_ORDER _BIG_ENDIAN
56: #include <sys/endian.h>
57:
58: #endif /* _M68K_ENDIAN_H_ */
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