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
  22 static 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
  28 static 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 */