diff options
Diffstat (limited to 'arch/openrisc/include/asm/bitops/ffs.h')
| -rw-r--r-- | arch/openrisc/include/asm/bitops/ffs.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/openrisc/include/asm/bitops/ffs.h b/arch/openrisc/include/asm/bitops/ffs.h new file mode 100644 index 000000000..b4c835d6b --- /dev/null +++ b/arch/openrisc/include/asm/bitops/ffs.h @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * OpenRISC Linux + * + * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> + */ + +#ifndef __ASM_OPENRISC_FFS_H +#define __ASM_OPENRISC_FFS_H + +#ifdef CONFIG_OPENRISC_HAVE_INST_FF1 + +static inline int ffs(int x) +{ + int ret; + + __asm__ ("l.ff1 %0,%1" + : "=r" (ret) + : "r" (x)); + + return ret; +} + +#else +#include <asm-generic/bitops/ffs.h> +#endif + +#endif /* __ASM_OPENRISC_FFS_H */ |