| /* ffs -- find first set bit in an int, from least significant end. |
| Copyright (C) 2013-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #include <sysdep.h> |
| |
| .syntax unified |
| .text |
| |
| ENTRY (__ffs) |
| cmp r0, #0 |
| rbit r0, r0 |
| itt ne |
| clzne r0, r0 |
| addne r0, r0, #1 |
| bx lr |
| END (__ffs) |
| |
| weak_alias (__ffs, ffs) |
| weak_alias (__ffs, ffsl) |
| libc_hidden_def (__ffs) |
| libc_hidden_builtin_def (ffs) |
