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author | Catalin Marinas <catalin.marinas@arm.com> | 2012-11-05 14:58:32 +0000 |
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committer | Catalin Marinas <catalin.marinas@arm.com> | 2012-11-05 14:58:32 +0000 |
commit | 3fd9396af83a1e69eaf9ebb573207431d8f265b6 (patch) | |
tree | f221f5777695de71ea97423c67438bca1746e26c /arch/m68k/include/uapi/asm/swab.h | |
parent | e3978cded41dc7b364e74037f56d6bc558c11fd7 (diff) | |
parent | 3d70f8c617a436c7146ecb81df2265b4626dfe89 (diff) |
Merge tag 'v3.7-rc4' into upstream-master
Linux 3.7-rc4
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 */ |