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

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 /*
   3  * Copyright (C) 2012 Tobias Klauser <tklauser@distanz.ch>
   4  * Copyright (C) 2011 Pyramid Technical Consultants, Inc.
   5  *
   6  * This file is subject to the terms and conditions of the GNU General
   7  * Public License. See the file COPYING in the main directory of this
   8  * archive for more details.
   9  */
  10
  11 #ifndef _ASM_NIOS2_SWAB_H
  12 #define _ASM_NIOS2_SWAB_H
  13
  14 #include <linux/types.h>
  15 #include <asm-generic/swab.h>
  16
  17 #ifdef CONFIG_NIOS2_CI_SWAB_SUPPORT
  18 #ifdef __GNUC__
  19
  20 #define __nios2_swab(x)         \
  21         __builtin_custom_ini(CONFIG_NIOS2_CI_SWAB_NO, (x))
  22
  23 static inline __attribute__((const)) __u16 __arch_swab16(__u16 x)
  24 {
  25         return (__u16) __nios2_swab(((__u32) x) << 16);
  26 }
  27 #define __arch_swab16 __arch_swab16
  28
  29 static inline __attribute__((const)) __u32 __arch_swab32(__u32 x)
  30 {
  31         return (__u32) __nios2_swab(x);
  32 }
  33 #define __arch_swab32 __arch_swab32
  34
  35 #endif /* __GNUC__ */
  36 #endif /* CONFIG_NIOS2_CI_SWAB_SUPPORT */
  37
  38 #endif /* _ASM_NIOS2_SWAB_H */