arch/mn10300/include/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
  18 static 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
  27 static 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 */