diff options
| author | Stefan Kristiansson <stefan.kristiansson@saunalahti.fi> | 2011-11-26 19:04:49 +0000 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2012-01-13 21:16:37 +0100 |
| commit | ca9d3ab5c7e12929d1c64e3618bbd30e1ed2ea70 (patch) | |
| tree | f8ce381cbe18de64e877edb25f2dac1a3b97de04 /arch/openrisc/include/asm/bitops/ffs.h | |
| parent | 30de1014a78e742159ecae483afd491e78a559c0 (diff) | |
openrisc: Add architecture header files
Signed-off-by: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Diffstat (limited to 'arch/openrisc/include/asm/bitops/ffs.h')
| -rw-r--r-- | arch/openrisc/include/asm/bitops/ffs.h | 26 |
1 files changed, 26 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 0000000000..1de5295816 --- /dev/null +++ b/arch/openrisc/include/asm/bitops/ffs.h @@ -0,0 +1,26 @@ +/* + * 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_FFS_H +#define __ASM_OPENRISC_FFS_H + +static inline int ffs(int x) +{ + int ret; + + __asm__ ("l.ff1 %0,%1" + : "=r" (ret) + : "r" (x)); + + return ret; +} + +#endif /* __ASM_OPENRISC_FFS_H */ |