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) 06/27/88" 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 32ENTRY(strcat, R6|R7) 33 movq 4(ap), r6 # r6 = s1; r7 = s2 34 movl r6,r1 350: 36 locc $0,$65535,(r1) # look for '\0' 37 beql 0b 38 movl r1,r3 # save end of s1 391: 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 452: 46 subl2 r7,r1 # calculate length 47 incl r1 48 movc3 r1,(r7),(r3) # copy remainder 49 movl r6,r0 50 ret 51