diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-16 19:24:00 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-10-16 19:24:00 -0700 |
commit | 8d2b6b3ae280dcf6f6c7a95623670a57cdf562ed (patch) | |
tree | 79e0c663f37c380735a41031abaa73b4c299c9ca /arch/sh/include/uapi/asm/swab.h | |
parent | 90a24a4a7e8f8b3488438276e1d15bb3762df31e (diff) | |
parent | 0dd4d5cbe4c38165dc9b3ad329ebb23f24d74fdb (diff) |
Merge tag 'sh-for-linus' of git://github.com/pmundt/linux-sh
Pull SuperH updates from Paul Mundt.
The bulk of this is the UAPI disintegration for SH.
* tag 'sh-for-linus' of git://github.com/pmundt/linux-sh:
sh: Fix up more fallout from pointless ARM __iomem churn.
sh: Wire up kcmp syscall.
UAPI: (Scripted) Disintegrate arch/sh/include/asm
Diffstat (limited to 'arch/sh/include/uapi/asm/swab.h')
-rw-r--r-- | arch/sh/include/uapi/asm/swab.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/arch/sh/include/uapi/asm/swab.h b/arch/sh/include/uapi/asm/swab.h new file mode 100644 index 000000000000..1cd09767a7a3 --- /dev/null +++ b/arch/sh/include/uapi/asm/swab.h @@ -0,0 +1,59 @@ +#ifndef __ASM_SH_SWAB_H +#define __ASM_SH_SWAB_H + +/* + * Copyright (C) 1999 Niibe Yutaka + * Copyright (C) 2000, 2001 Paolo Alberelli + */ +#include <linux/compiler.h> +#include <linux/types.h> +#include <asm-generic/swab.h> + +static inline __attribute_const__ __u32 __arch_swab32(__u32 x) +{ + __asm__( +#ifdef __SH5__ + "byterev %1, %0\n\t" + "shari %0, 32, %0" +#else + "swap.b %1, %0\n\t" + "swap.w %0, %0\n\t" + "swap.b %0, %0" +#endif + : "=r" (x) + : "r" (x)); + + return x; +} +#define __arch_swab32 __arch_swab32 + +static inline __attribute_const__ __u16 __arch_swab16(__u16 x) +{ + __asm__( +#ifdef __SH5__ + "byterev %1, %0\n\t" + "shari %0, 32, %0" +#else + "swap.b %1, %0" +#endif + : "=r" (x) + : "r" (x)); + + return x; +} +#define __arch_swab16 __arch_swab16 + +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; +} +#define __arch_swab64 __arch_swab64 + +#endif /* __ASM_SH_SWAB_H */ |