diff options
| author | Harvey Harrison <harvey.harrison@gmail.com> | 2009-01-06 14:56:34 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-06 18:10:29 -0800 |
| commit | 5cbd04ae36fcb8fd1f38c71dacbbe59f3166f074 (patch) | |
| tree | 906fc16e7341526dc232fea1021d2154d5ed74ea /include/asm-mn10300/swab.h | |
| parent | 919594765dcf803017b2227425c1b27b5ea537be (diff) | |
mn10300: introduce asm/swab.h
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-mn10300/swab.h')
| -rw-r--r-- | include/asm-mn10300/swab.h | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/include/asm-mn10300/swab.h b/include/asm-mn10300/swab.h new file mode 100644 index 00000000000..4504d1b4b47 --- /dev/null +++ b/include/asm-mn10300/swab.h @@ -0,0 +1,42 @@ +/* MN10300 Byte-order primitive construction + * + * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ +#ifndef _ASM_SWAB_H +#define _ASM_SWAB_H + +#include <asm/types.h> + +#ifdef __GNUC__ + +static inline __attribute__((const)) +__u32 __arch_swab32(__u32 x) +{ + __u32 ret; + asm("swap %1,%0" : "=r" (ret) : "r" (x)); + return ret; +} +#define __arch_swab32 __arch_swab32 + +static inline __attribute__((const)) +__u16 __arch_swab16(__u16 x) +{ + __u16 ret; + asm("swaph %1,%0" : "=r" (ret) : "r" (x)); + return ret; +} +#define __arch_swab32 __arch_swab32 + +#if !defined(__STRICT_ANSI__) || defined(__KERNEL__) +# define __SWAB_64_THRU_32__ +#endif + +#endif /* __GNUC__ */ + +#endif /* _ASM_SWAB_H */ |