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))
__arch_swab32(__u32 x)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))
__arch_swab16(__u16 x)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 */
43