swab.h

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#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 */