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Annotation of 43BSDReno/lib/libc/vax/string/strlen.s, revision 1.1

1.1     ! root        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: (1) source distributions retain this entire copyright
        !             7:  * notice and comment, and (2) distributions including binaries display
        !             8:  * the following acknowledgement:  ``This product includes software
        !             9:  * developed by the University of California, Berkeley and its contributors''
        !            10:  * in the documentation or other materials provided with the distribution
        !            11:  * and in all advertising materials mentioning features or use of this
        !            12:  * software. Neither the name of the University nor the names of its
        !            13:  * contributors may be used to endorse or promote products derived
        !            14:  * from this software without specific prior written permission.
        !            15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            18:  */
        !            19: 
        !            20: #if defined(LIBC_SCCS) && !defined(lint)
        !            21:        .asciz "@(#)strlen.s    5.6 (Berkeley) 6/1/90"
        !            22: #endif /* LIBC_SCCS and not lint */
        !            23: 
        !            24: /*
        !            25:  * Return the length of cp (not counting '\0').
        !            26:  *
        !            27:  * strlen(cp)
        !            28:  *     char *cp;
        !            29:  */
        !            30: #include "DEFS.h"
        !            31: 
        !            32: ENTRY(strlen, 0)
        !            33:        movl    4(ap),r1
        !            34: 1:
        !            35:        locc    $0,$65535,(r1)  # look for '\0'
        !            36:        beql    1b
        !            37:        subl3   4(ap),r1,r0     # len = cp - base
        !            38:        ret

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