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1 /* MN10300 Byte-order primitive construction
2 *
3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public Licence
8 * as published by the Free Software Foundation; either version
9 * 2 of the Licence, or (at your option) any later version.
10 */
11 #ifndef _ASM_SWAB_H
12 #define _ASM_SWAB_H
13
14 #include <linux/types.h>
15
16 #ifdef __GNUC__
17
18 static inline __attribute__((const))
19 __u32 __arch_swab32(__u32 x)
20 {
21 __u32 ret;
22 asm("swap %1,%0" : "=r" (ret) : "r" (x));
23 return ret;
24 }
25 #define __arch_swab32 __arch_swab32
26
27 static inline __attribute__((const))
28 __u16 __arch_swab16(__u16 x)
29 {
30 __u16 ret;
31 asm("swaph %1,%0" : "=r" (ret) : "r" (x));
32 return ret;
33 }
34 #define __arch_swab32 __arch_swab32
35
36 #if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
37 # define __SWAB_64_THRU_32__
38 #endif
39
40 #endif /* __GNUC__ */
41
42 #endif /* _ASM_SWAB_H */