1*1a8dbaacSderaadt/* $OpenBSD: ffs.S,v 1.2 2020/10/16 23:42:16 deraadt Exp $ */ 208b16776Snaddy/* 308b16776Snaddy * Written by Christian Weisgerber <naddy@openbsd.org>. 408b16776Snaddy * Public domain. 508b16776Snaddy */ 608b16776Snaddy 708b16776Snaddy#include "DEFS.h" 808b16776Snaddy 908b16776SnaddyENTRY(ffs) 10*1a8dbaacSderaadt RETGUARD_SETUP(ffs, %r11); 1108b16776Snaddy neg %r4, %r3 1208b16776Snaddy and %r3, %r3, %r4 1308b16776Snaddy cntlzw %r3, %r3 1408b16776Snaddy subfic %r3, %r3, 32 15*1a8dbaacSderaadt RETGUARD_CHECK(ffs, %r11); 1608b16776Snaddy blr 1708b16776SnaddyEND_BUILTIN(ffs) 18