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[linux.git] / arch / openrisc / include / asm / bitops / fls.h
1 /*
2  * OpenRISC Linux
3  *
4  * Copyright (C) 2010-2011 Jonas Bonn <[email protected]>
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  */
11
12 #ifndef __ASM_OPENRISC_FLS_H
13 #define __ASM_OPENRISC_FLS_H
14
15
16 #ifdef CONFIG_OPENRISC_HAVE_INST_FL1
17
18 static inline int fls(int x)
19 {
20         int ret;
21
22         __asm__ ("l.fl1 %0,%1"
23                  : "=r" (ret)
24                  : "r" (x));
25
26         return ret;
27 }
28
29 #else
30 #include <asm-generic/bitops/fls.h>
31 #endif
32
33 #endif /* __ASM_OPENRISC_FLS_H */
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