xref: /csrg-svn/lib/libc/vax/string/strlen.s (revision 34481)
1/*
2 * Copyright (c) 1983 Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms are permitted
6 * provided that this notice is preserved and that due credit is given
7 * to the University of California at Berkeley. The name of the University
8 * may not be used to endorse or promote products derived from this
9 * software without specific written prior permission. This software
10 * is provided ``as is'' without express or implied warranty.
11 */
12
13#if defined(SYSLIBC_SCCS) && !defined(lint)
14_sccsid:.asciz	"@(#)strlen.s	5.4 (Berkeley) 05/25/88"
15#endif /* SYSLIBC_SCCS and not lint */
16
17/*
18 * Return the length of cp (not counting '\0').
19 *
20 * strlen(cp)
21 *	char *cp;
22 */
23#include "DEFS.h"
24
25ENTRY(strlen, 0)
26	movl	4(ap),r1
271:
28	locc	$0,$65535,(r1)	# look for '\0'
29	beql	1b
30	subl3	4(ap),r1,r0	# len = cp - base
31	ret
32