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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-sh/byteorder.h | |
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Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-sh/byteorder.h')
-rw-r--r-- | include/asm-sh/byteorder.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/include/asm-sh/byteorder.h b/include/asm-sh/byteorder.h new file mode 100644 index 000000000000..bff2b1382e01 --- /dev/null +++ b/include/asm-sh/byteorder.h @@ -0,0 +1,56 @@ +#ifndef __ASM_SH_BYTEORDER_H +#define __ASM_SH_BYTEORDER_H + +/* + * Copyright (C) 1999 Niibe Yutaka + */ + +#include <asm/types.h> +#include <linux/compiler.h> + +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" + : "=r" (x) + : "0" (x)); + return x; +} + +static __inline__ __attribute_const__ __u16 ___arch__swab16(__u16 x) +{ + __asm__("swap.b %0, %0" + : "=r" (x) + : "0" (x)); + return x; +} + +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(x) ___arch__swab64(x) +#define __arch__swab32(x) ___arch__swab32(x) +#define __arch__swab16(x) ___arch__swab16(x) + +#if !defined(__STRICT_ANSI__) || defined(__KERNEL__) +# define __BYTEORDER_HAS_U64__ +# define __SWAB_64_THRU_32__ +#endif + +#ifdef __LITTLE_ENDIAN__ +#include <linux/byteorder/little_endian.h> +#else +#include <linux/byteorder/big_endian.h> +#endif + +#endif /* __ASM_SH_BYTEORDER_H */ |