1/*- 2 * Copyright (c) 1990, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * the Systems Programming Group of the University of Utah Computer 7 * Science Department. 8 * 9 * %sccs.include.redist.c% 10 */ 11 12#if defined(LIBC_SCCS) && !defined(lint) 13 .asciz "@(#)ffs.s 8.1 (Berkeley) 06/04/93" 14#endif /* LIBC_SCCS and not lint */ 15 16/* bit = ffs(value) */ 17 18#include "DEFS.h" 19 20ENTRY(ffs) 21 moveq #-1,d0 22 movl sp@(4),d1 23 beq done 24again: 25 addql #1,d0 26 btst d0,d1 27 beq again 28done: 29 addql #1,d0 30 rts 31