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Annotation of 43BSDTahoe/lib/libc/gen/gen.vax/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 the above copyright notice and this paragraph are
        !             7:  * duplicated in all such forms and that any documentation,
        !             8:  * advertising materials, and other materials related to such
        !             9:  * distribution and use acknowledge that the software was developed
        !            10:  * by the University of California, Berkeley.  The name of the
        !            11:  * University may not be used to endorse or promote products derived
        !            12:  * from this software without specific prior written permission.
        !            13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            16:  */
        !            17: 
        !            18: #if defined(LIBC_SCCS) && !defined(lint)
        !            19:        .asciz "@(#)strlen.s    5.5 (Berkeley) 6/27/88"
        !            20: #endif /* LIBC_SCCS and not lint */
        !            21: 
        !            22: /*
        !            23:  * Return the length of cp (not counting '\0').
        !            24:  *
        !            25:  * strlen(cp)
        !            26:  *     char *cp;
        !            27:  */
        !            28: #include "DEFS.h"
        !            29: 
        !            30: ENTRY(strlen, 0)
        !            31:        movl    4(ap),r1
        !            32: 1:
        !            33:        locc    $0,$65535,(r1)  # look for '\0'
        !            34:        beql    1b
        !            35:        subl3   4(ap),r1,r0     # len = cp - base
        !            36:        ret

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