mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-15 01:21:06 +00:00
37 lines
1.1 KiB
ArmAsm
37 lines
1.1 KiB
ArmAsm
/* ffs -- find first set bit in an int, from least significant end.
|
|
Copyright (C) 2013-2020 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
|
|
<https://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)
|