1/* Copyright (C) 2000-2021 Free Software Foundation, Inc.
2   This file is part of the GNU C Library.
3
4   The GNU C Library is free software; you can redistribute it and/or
5   modify it under the terms of the GNU Lesser General Public
6   License as published by the Free Software Foundation; either
7   version 2.1 of the License, or (at your option) any later version.
8
9   The GNU C Library is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12   Lesser General Public License for more details.
13
14   You should have received a copy of the GNU Lesser General Public
15   License along with the GNU C Library.  If not, see
16   <https://www.gnu.org/licenses/>.  */
17
18/* Finds the first bit set in an integer.  */
19
20#include <sysdep.h>
21
22	.arch ev6
23	.set noreorder
24	.set noat
25
26
27ENTRY(__ffs)
28#ifdef PROF
29	ldgp	gp, 0(pv)
30	lda	AT, _mcount
31	jsr	AT, (AT), _mcount
32	.prologue 1
33#else
34	.prologue 0
35#endif
36
37	zap	$16, 0xF0, $16
38	cttz	$16, $0
39	addq	$0, 1, $0
40	cmoveq	$16, 0, $0
41
42	nop
43	nop
44	nop
45	ret
46
47END(__ffs)
48
49weak_alias (__ffs, ffs)
50libc_hidden_def (__ffs)
51libc_hidden_builtin_def (ffs)
52