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1 | /* |
2 | * Copyright (c) 1983 Regents of the University of California. | |
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3 | * All rights reserved. |
4 | * | |
5 | * Redistribution and use in source and binary forms are permitted | |
f4f66d2c KB |
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. | |
586c39b1 DF |
16 | */ |
17 | ||
f4f66d2c | 18 | #if defined(LIBC_SCCS) && !defined(lint) |
ca67e7b4 | 19 | .asciz "@(#)strcpy.s 5.5 (Berkeley) 6/27/88" |
f4f66d2c | 20 | #endif /* LIBC_SCCS and not lint */ |
ae7679ef SL |
21 | |
22 | /* | |
23 | * Copy string s2 over top of s1. | |
dff54044 | 24 | * Return base of s1. |
ae7679ef SL |
25 | * |
26 | * char * | |
27 | * strcpy(s1, s2) | |
28 | * char *s1, *s2; | |
29 | */ | |
dadab5a2 | 30 | #include "DEFS.h" |
ae7679ef | 31 | |
dadab5a2 | 32 | ENTRY(strcpy, R6) |
ae7679ef SL |
33 | movl 4(ap), r3 # r3 = s1 |
34 | movl 8(ap), r6 # r6 = s2 | |
35 | 1: | |
36 | locc $0,$65535,(r6) # find length of s2 | |
37 | bneq 2f | |
38 | movc3 $65535,(r6),(r3)# copy full block | |
dff54044 | 39 | movl r1,r6 |
ae7679ef SL |
40 | jbr 1b |
41 | 2: | |
42 | subl2 r6,r1 # calculate length | |
43 | incl r1 | |
44 | movc3 r1,(r6),(r3) # copy remainder | |
dff54044 | 45 | movl 4(ap),r0 # return base of s1 |
ae7679ef | 46 | ret |