diff options
| author | Harvey Harrison <harvey.harrison@gmail.com> | 2009-01-06 14:56:27 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-06 18:10:27 -0800 |
| commit | f4d2b14501bb7f9a3fa75c07ec0940068fadf728 (patch) | |
| tree | ab54ca436766cff9405edbff535aa64f679adb44 /arch/sparc/include/asm/swab.h | |
| parent | 1af84a625356768ab1f9687b70c825250123d7fd (diff) | |
sparc: 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 'arch/sparc/include/asm/swab.h')
| -rw-r--r-- | arch/sparc/include/asm/swab.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/swab.h b/arch/sparc/include/asm/swab.h new file mode 100644 index 00000000000..a34ad079487 --- /dev/null +++ b/arch/sparc/include/asm/swab.h @@ -0,0 +1,45 @@ +#ifndef _SPARC_SWAB_H +#define _SPARC_SWAB_H + +#include <linux/types.h> +#include <asm/asi.h> + +#if defined(__sparc__) && defined(__arch64__) +static inline __u16 __arch_swab16p(const __u16 *addr) +{ + __u16 ret; + + __asm__ __volatile__ ("lduha [%1] %2, %0" + : "=r" (ret) + : "r" (addr), "i" (ASI_PL)); + return ret; +} +#define __arch_swab16p __arch_swab16p + +static inline __u32 __arch_swab32p(const __u32 *addr) +{ + __u32 ret; + + __asm__ __volatile__ ("lduwa [%1] %2, %0" + : "=r" (ret) + : "r" (addr), "i" (ASI_PL)); + return ret; +} +#define __arch_swab32p __arch_swab32p + +static inline __u64 __arch_swab64p(const __u64 *addr) +{ + __u64 ret; + + __asm__ __volatile__ ("ldxa [%1] %2, %0" + : "=r" (ret) + : "r" (addr), "i" (ASI_PL)); + return ret; +} +#define __arch_swab64p __arch_swab64p + +#else +#define __SWAB_64_THRU_32__ +#endif /* defined(__sparc__) && defined(__arch64__) */ + +#endif /* _SPARC_SWAB_H */ |