kernel-ark/include/asm-sh/byteorder.h
Linus Torvalds 1da177e4c3 Linux-2.6.12-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!
2005-04-16 15:20:36 -07:00

57 lines
1.1 KiB
C

#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 */