xref: /openbmc/linux/arch/nios2/include/uapi/asm/swab.h (revision b4e18b29)
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 */
39