1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * OpenRISC Linux
4 *
5 * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
6 */
7
8 #ifndef __ASM_OPENRISC_FFS_H
9 #define __ASM_OPENRISC_FFS_H
10
11 #ifdef CONFIG_OPENRISC_HAVE_INST_FF1
12
13 static inline int ffs(int x)
14 {
15 int ret;
16
17 __asm__ ("l.ff1 %0,%1"
18 : "=r" (ret)
19 : "r" (x));
20
21 return ret;
22 }
23
24 #else
25 #include <asm-generic/bitops/ffs.h>
26 #endif
27
28 #endif /* __ASM_OPENRISC_FFS_H */
29
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