usr/src/lib/libc/tahoe/string/strlen.s

/*
 * Copyright (c) 1988 Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 *
 * This code is derived from software contributed to Berkeley by
 * Computer Consoles Inc.
 */

#if defined(LIBC_SCCS) && !defined(lint)
        .asciz "@(#)strlen.s    1.4 (Berkeley) %G%"
#endif /* LIBC_SCCS and not lint */

/*
 * Returns the number of
 * non-NULL bytes in string argument.
 */

#include "DEFS.h"

ENTRY(strlen, 0)
        movl    4(fp),r0
        movl    r0,r1
        cmps2
        subl2   4(fp),r0
        ret