xref: /openbsd/lib/libc/arch/powerpc64/string/ffs.S (revision e5dd7070) 
1/*	$OpenBSD: ffs.S,v 1.1 2020/06/26 20:16:21 naddy Exp $ */
2/*
3 * Written by Christian Weisgerber <naddy@openbsd.org>.
4 * Public domain.
5 */
6
7#include "DEFS.h"
8
9ENTRY(ffs)
10	neg	%r4, %r3
11	and	%r3, %r3, %r4
12	cntlzw	%r3, %r3
13	subfic	%r3, %r3, 32
14	blr
15END_BUILTIN(ffs)
16