LXR linux/arch/nios2/include/uapi/asm/swab.h

   1/*
   2 * Copyright (C) 2012 Tobias Klauser <tklauser@distanz.ch>
   3 * Copyright (C) 2011 Pyramid Technical Consultants, Inc.
   4 *
   5 * This file is subject to the terms and conditions of the GNU General
   6 * Public License. See the file COPYING in the main directory of this
   7 * archive for more details.
   8 */
   9
  10#ifndef _ASM_NIOS2_SWAB_H
  11#define _ASM_NIOS2_SWAB_H
  12
  13#include <linux/types.h>
  14#include <asm-generic/swab.h>
  15
  16#ifdef CONFIG_NIOS2_CI_SWAB_SUPPORT
  17#ifdef __GNUC__
  18
  19#define __nios2_swab(x)         \
  20        __builtin_custom_ini(CONFIG_NIOS2_CI_SWAB_NO, (x))
  21
  22static inline __attribute__((const)) __u16 __arch_swab16(__u16 x)
  23{
  24        return (__u16) __nios2_swab(((__u32) x) << 16);
  25}
  26#define __arch_swab16 __arch_swab16
  27
  28static inline __attribute__((const)) __u32 __arch_swab32(__u32 x)
  29{
  30        return (__u32) __nios2_swab(x);
  31}
  32#define __arch_swab32 __arch_swab32
  33
  34#endif /* __GNUC__ */
  35#endif /* CONFIG_NIOS2_CI_SWAB_SUPPORT */
  36
  37#endif /* _ASM_NIOS2_SWAB_H */
  38