/*      $OpenBSD: ffs.S,v 1.3 2020/11/28 19:49:30 gkoehler Exp $ */
/*
 * Written by Christian Weisgerber <naddy@openbsd.org>.
 * Public domain.
 */
 
#include <machine/asm.h>

ENTRY(ffs)
        RETGUARD_SETUP(ffs, %r11, %r12)
        neg     %r4, %r3
        and     %r3, %r3, %r4
        cntlzw  %r3, %r3
        subfic  %r3, %r3, 32
        RETGUARD_CHECK(ffs, %r11, %r12)
        blr
END(ffs)