141811Sbostic/*- 2*61123Sbostic * Copyright (c) 1990, 1993 3*61123Sbostic * The Regents of the University of California. All rights reserved. 441811Sbostic * 541811Sbostic * This code is derived from software contributed to Berkeley by 641811Sbostic * the Systems Programming Group of the University of Utah Computer 741811Sbostic * Science Department. 841811Sbostic * 941811Sbostic * %sccs.include.redist.c% 1041811Sbostic */ 1141811Sbostic 1241811Sbostic#if defined(LIBC_SCCS) && !defined(lint) 13*61123Sbostic .asciz "@(#)ffs.s 8.1 (Berkeley) 06/04/93" 1441811Sbostic#endif /* LIBC_SCCS and not lint */ 1541811Sbostic 1641811Sbostic/* bit = ffs(value) */ 1741811Sbostic 1841811Sbostic#include "DEFS.h" 1941811Sbostic 2041811SbosticENTRY(ffs) 2141811Sbostic moveq #-1,d0 2241811Sbostic movl sp@(4),d1 2341811Sbostic beq done 2441811Sbosticagain: 2541811Sbostic addql #1,d0 2641811Sbostic btst d0,d1 2741811Sbostic beq again 2841811Sbosticdone: 2941811Sbostic addql #1,d0 3041811Sbostic rts 31