63 lines
2.3 KiB
ArmAsm
63 lines
2.3 KiB
ArmAsm
/*
|
|
* Copyright (c) 1983 Regents of the University of California.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
.asciz "@(#)strcpy.s 5.6 (Berkeley) 6/1/90"
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
/*
|
|
* Copy string s2 over top of s1.
|
|
* Return base of s1.
|
|
*
|
|
* char *
|
|
* strcpy(s1, s2)
|
|
* char *s1, *s2;
|
|
*/
|
|
#include "DEFS.h"
|
|
|
|
ENTRY(strcpy, R6)
|
|
movl 4(ap), r3 # r3 = s1
|
|
movl 8(ap), r6 # r6 = s2
|
|
1:
|
|
locc $0,$65535,(r6) # find length of s2
|
|
bneq 2f
|
|
movc3 $65535,(r6),(r3)# copy full block
|
|
movl r1,r6
|
|
jbr 1b
|
|
2:
|
|
subl2 r6,r1 # calculate length
|
|
incl r1
|
|
movc3 r1,(r6),(r3) # copy remainder
|
|
movl 4(ap),r0 # return base of s1
|
|
ret
|