1/* $OpenBSD: ffs.S,v 1.2 2020/10/16 23:42:16 deraadt Exp $ */ 2/* 3 * Written by Christian Weisgerber <naddy@openbsd.org>. 4 * Public domain. 5 */ 6 7#include "DEFS.h" 8 9ENTRY(ffs) 10 RETGUARD_SETUP(ffs, %r11); 11 neg %r4, %r3 12 and %r3, %r3, %r4 13 cntlzw %r3, %r3 14 subfic %r3, %r3, 32 15 RETGUARD_CHECK(ffs, %r11); 16 blr 17END_BUILTIN(ffs) 18