diff options
| author | Paul Mundt <lethal@linux-sh.org> | 2007-11-09 13:58:44 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2008-01-28 13:18:41 +0900 |
| commit | 7a65eaf4885d1d0afeec45239eaf9208a3235b51 (patch) | |
| tree | 6b478fa021a92b33e23d3751b912fe60242c6dd1 | |
| parent | 4690bdc7c6e4f18fb58350ccde40df5fcd85a6d9 (diff) | |
sh: SH-5 byteorder routines.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| -rw-r--r-- | include/asm-sh/byteorder.h | 45 |
1 files changed, 30 insertions, 15 deletions
diff --git a/include/asm-sh/byteorder.h b/include/asm-sh/byteorder.h index bff2b1382e01..0eb9904b6545 100644 --- a/include/asm-sh/byteorder.h +++ b/include/asm-sh/byteorder.h @@ -3,40 +3,55 @@ /* * Copyright (C) 1999 Niibe Yutaka + * Copyright (C) 2000, 2001 Paolo Alberelli */ - -#include <asm/types.h> #include <linux/compiler.h> +#include <linux/types.h> -static __inline__ __attribute_const__ __u32 ___arch__swab32(__u32 x) +static inline __attribute_const__ __u32 ___arch__swab32(__u32 x) { - __asm__("swap.b %0, %0\n\t" - "swap.w %0, %0\n\t" - "swap.b %0, %0" + __asm__( +#ifdef CONFIG_SUPERH32 + "swap.b %0, %0\n\t" + "swap.w %0, %0\n\t" + "swap.b %0, %0" +#else + "byterev %0, %0\n\t" + "shari %0, 32, %0" +#endif : "=r" (x) : "0" (x)); + return x; } -static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x) +static inline __attribute_const__ __u16 ___arch__swab16(__u16 x) { - __asm__("swap.b %0, %0" + __asm__( +#ifdef CONFIG_SUPERH32 + "swap.b %0, %0" +#else + "byterev %0, %0\n\t" + "shari %0, 32, %0" + +#endif : "=r" (x) : "0" (x)); + return x; } -static inline __u64 ___arch__swab64(__u64 val) -{ - union { +static inline __u64 ___arch__swab64(__u64 val) +{ + union { struct { __u32 a,b; } s; __u64 u; } v, w; v.u = val; - w.s.b = ___arch__swab32(v.s.a); - w.s.a = ___arch__swab32(v.s.b); - return w.u; -} + w.s.b = ___arch__swab32(v.s.a); + w.s.a = ___arch__swab32(v.s.b); + return w.u; +} #define __arch__swab64(x) ___arch__swab64(x) #define __arch__swab32(x) ___arch__swab32(x) |