include/asm-mn10300/byteorder.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_BYTEORDER_H
  12 #define _ASM_BYTEORDER_H
  13
  14 #include <asm/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
  26 static inline __attribute__((const))
  27 __u16 ___arch__swab16(__u16 x)
  28 {
  29         __u16 ret;
  30         asm("swaph %1,%0" : "=r" (ret) : "r" (x));
  31         return ret;
  32 }
  33
  34 #define __arch__swab32(x) ___arch__swab32(x)
  35 #define __arch__swab16(x) ___arch__swab16(x)
  36
  37 #if !defined(__STRICT_ANSI__) || defined(__KERNEL__)
  38 #  define __BYTEORDER_HAS_U64__
  39 #  define __SWAB_64_THRU_32__
  40 #endif
  41
  42 #endif /* __GNUC__ */
  43
  44 #include <linux/byteorder/little_endian.h>
  45
  46 #endif /* _ASM_BYTEORDER_H */