/*
* Written by J.T. Conklin <[email protected]>.
* Public domain.
*/

#include <machine/asm.h>

#if defined(LIBC_SCCS)
       RCSID("$NetBSD: ffs.S,v 1.2 2014/03/22 19:38:46 jakllsch Exp $")
#endif

ENTRY(ffs)
       bsfl    4(%esp),%eax
       jz      L1                      /* ZF is set if all bits are 0 */
       incl    %eax                    /* bits numbered from 1, not 0 */
       ret

       _ALIGN_TEXT
L1:     xorl    %eax,%eax               /* clear result */
       ret
END(ffs)

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