LXR linux/arch/mn10300/include/uapi/asm/swab.h

   1/* MN10300 Byte-order primitive construction
   2 *
   3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
   4 * Written by David Howells (dhowells@redhat.com)
   5 *
   6 * This program is free software; you can redistribute it and/or
   7 * modify it under the terms of the GNU General Public Licence
   8 * as published by the Free Software Foundation; either version
   9 * 2 of the Licence, or (at your option) any later version.
  10 */
  11#ifndef _ASM_SWAB_H
  12#define _ASM_SWAB_H
  13
  14#include <linux/types.h>
  15
  16#ifdef __GNUC__
  17
  18static inline __attribute__((const))
  19__u32 __arch_swab32(__u32 x)
  20{
  21        __u32 ret;
  22        asm("swap %1,%0" : "=r" (ret) : "r" (x));
  23        return ret;
  24}
  25#define __arch_swab32 __arch_swab32
  26
  27static inline __attribute__((const))
  28__u16 __arch_swab16(__u16 x)
  29{
  30        __u16 ret;
  31        asm("swaph %1,%0" : "=r" (ret) : "r" (x));
  32        return ret;
  33}
  34#define __arch_swab32 __arch_swab32
  35
  36#if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
  37#  define __SWAB_64_THRU_32__
  38#endif
  39
  40#endif /* __GNUC__ */
  41
  42#endif /* _ASM_SWAB_H */
  43