Return to strcat.s CVS log

Up to [CSRG BSD Unix] / 43BSDTahoe / lib / libc / gen / gen.vax

Annotation of 43BSDTahoe/lib/libc/gen/gen.vax/strcat.s, revision 1.1.1.1

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 "@(#)strcat.s    5.5 (Berkeley) 6/27/88"
                     20: #endif /* LIBC_SCCS and not lint */
                     21: 
                     22: /*
                     23:  * Concatenate string s2 to the end of s1
                     24:  * and return the base of s1.
                     25:  *
                     26:  * char *
                     27:  * strcat(s1, s2)
                     28:  *     char *s1, *s2;
                     29:  */
                     30: #include "DEFS.h"
                     31: 
                     32: ENTRY(strcat, R6|R7)
                     33:        movq    4(ap), r6       # r6 = s1; r7 = s2
                     34:        movl    r6,r1
                     35: 0:
                     36:        locc    $0,$65535,(r1)  # look for '\0'
                     37:        beql    0b
                     38:        movl    r1,r3           # save end of s1
                     39: 1:
                     40:        locc    $0,$65535,(r7)  # find length of s2
                     41:        bneq    2f
                     42:        movc3   $65535,(r7),(r3)# copy full block
                     43:        movl    r1,r7
                     44:        jbr     1b
                     45: 2:
                     46:        subl2   r7,r1           # calculate length
                     47:        incl    r1
                     48:        movc3   r1,(r7),(r3)    # copy remainder
                     49:        movl    r6,r0
                     50:        ret

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.