File:  [CSRG BSD Unix] / 43BSDReno / lib / libc / vax / string / strlen.s
Revision 1.1.1.1 (vendor branch): download - view: text, annotated - select for diffs
Tue Apr 24 16:12:55 2018 UTC (8 years, 1 month ago) by root
Branches: MAIN, BSD
CVS tags: HEAD, BSD43reno
BSD 4.3reno

/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that: (1) source distributions retain this entire copyright
 * notice and comment, and (2) distributions including binaries display
 * the following acknowledgement:  ``This product includes software
 * developed by the University of California, Berkeley and its contributors''
 * in the documentation or other materials provided with the distribution
 * and in all advertising materials mentioning features or use of this
 * software. Neither the name of the University nor the names of its
 * contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#if defined(LIBC_SCCS) && !defined(lint)
	.asciz "@(#)strlen.s	5.6 (Berkeley) 6/1/90"
#endif /* LIBC_SCCS and not lint */

/*
 * Return the length of cp (not counting '\0').
 *
 * strlen(cp)
 *	char *cp;
 */
#include "DEFS.h"

ENTRY(strlen, 0)
	movl	4(ap),r1
1:
	locc	$0,$65535,(r1)	# look for '\0'
	beql	1b
	subl3	4(ap),r1,r0	# len = cp - base
	ret

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