b6cbf7203b
This patch imports the unmodified current version of NetBSD libc. The NetBSD includes are in /nbsd_include, while the libc code itself is split between lib/nbsd_libc and common/lib/libc.
20 lines
439 B
ArmAsm
20 lines
439 B
ArmAsm
/*
|
|
* Written by J.T. Conklin <jtc@NetBSD.org>.
|
|
* Public domain.
|
|
* Adapted for NetBSD/x86_64 by Frank van der Linden <fvdl@wasabisystems.com>
|
|
*/
|
|
|
|
#include <machine/asm.h>
|
|
|
|
#if defined(LIBC_SCCS)
|
|
RCSID("$NetBSD: ffs.S,v 1.4 2009/07/20 15:21:00 christos Exp $")
|
|
#endif
|
|
|
|
ENTRY(ffs)
|
|
bsfl %edi,%eax
|
|
jz 1f /* ZF is set if all bits are 0 */
|
|
incl %eax /* bits numbered from 1, not 0 */
|
|
ret
|
|
|
|
1: xorl %eax,%eax /* clear result */
|
|
ret
|