34 lines
671 B
C
34 lines
671 B
C
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/*
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* OpenRISC Linux
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*
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* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __ASM_OPENRISC___FFS_H
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#define __ASM_OPENRISC___FFS_H
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#ifdef CONFIG_OPENRISC_HAVE_INST_FF1
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static inline unsigned long __ffs(unsigned long x)
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{
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int ret;
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__asm__ ("l.ff1 %0,%1"
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: "=r" (ret)
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: "r" (x));
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return ret-1;
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}
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#else
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#include <asm-generic/bitops/__ffs.h>
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#endif
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#endif /* __ASM_OPENRISC___FFS_H */
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