diff options
| author | Jonas Bonn <jonas@southpole.se> | 2011-06-04 22:43:49 +0300 |
|---|---|---|
| committer | Jonas Bonn <jonas@southpole.se> | 2011-07-22 18:46:39 +0200 |
| commit | 58e0166a4772aaeb10c9b0f6d59f19099d2047df (patch) | |
| tree | 9b4407ee02d1364a98ddb1604143444ff2bf7631 /arch/openrisc/include/asm/bitops/__fls.h | |
| parent | 769a8a96229e6b2f1e3a2b3b38e27981f7fb9902 (diff) | |
OpenRISC: Headers
Signed-off-by: Jonas Bonn <jonas@southpole.se>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/openrisc/include/asm/bitops/__fls.h')
| -rw-r--r-- | arch/openrisc/include/asm/bitops/__fls.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/openrisc/include/asm/bitops/__fls.h b/arch/openrisc/include/asm/bitops/__fls.h new file mode 100644 index 000000000000..c4ecdb4c523b --- /dev/null +++ b/arch/openrisc/include/asm/bitops/__fls.h @@ -0,0 +1,33 @@ +/* + * OpenRISC Linux + * + * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#ifndef __ASM_OPENRISC___FLS_H +#define __ASM_OPENRISC___FLS_H + + +#ifdef CONFIG_OPENRISC_HAVE_INST_FL1 + +static inline unsigned long __fls(unsigned long x) +{ + int ret; + + __asm__ ("l.fl1 %0,%1" + : "=r" (ret) + : "r" (x)); + + return ret-1; +} + +#else +#include <asm-generic/bitops/__fls.h> +#endif + +#endif /* __ASM_OPENRISC___FLS_H */ |