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author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-11-26 02:23:57 +0400 |
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committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-11-26 02:23:57 +0400 |
commit | 2a859ab07b6ab66f4134c4fffc341398bd3d328c (patch) | |
tree | c5e7eaf3bffbc18feb326940e39794328d98dc07 /arch/m68k/include/uapi/asm/swab.h | |
parent | cedddd812a79a4fda3885a15711aee3de78c4a24 (diff) | |
parent | e716e014384688d1a50d1aa5213ee74748c6d4e0 (diff) | |
download | linux-2a859ab07b6ab66f4134c4fffc341398bd3d328c.tar.xz |
Merge branch 'merge' into next
Merge my own merge branch to get various fixes from there
and upstream, especially the hvc console tty refcouting fixes
which which testing is quite a bit harder...
Diffstat (limited to 'arch/m68k/include/uapi/asm/swab.h')
-rw-r--r-- | arch/m68k/include/uapi/asm/swab.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/m68k/include/uapi/asm/swab.h b/arch/m68k/include/uapi/asm/swab.h new file mode 100644 index 000000000000..b7b37a40defc --- /dev/null +++ b/arch/m68k/include/uapi/asm/swab.h @@ -0,0 +1,27 @@ +#ifndef _M68K_SWAB_H +#define _M68K_SWAB_H + +#include <linux/types.h> +#include <linux/compiler.h> + +#define __SWAB_64_THRU_32__ + +#if defined (__mcfisaaplus__) || defined (__mcfisac__) +static inline __attribute_const__ __u32 __arch_swab32(__u32 val) +{ + __asm__("byterev %0" : "=d" (val) : "0" (val)); + return val; +} + +#define __arch_swab32 __arch_swab32 +#elif !defined(__mcoldfire__) + +static inline __attribute_const__ __u32 __arch_swab32(__u32 val) +{ + __asm__("rolw #8,%0; swap %0; rolw #8,%0" : "=d" (val) : "0" (val)); + return val; +} +#define __arch_swab32 __arch_swab32 +#endif + +#endif /* _M68K_SWAB_H */ |