1993-05-13 17:51:52 +04:00
|
|
|
/*-
|
|
|
|
|
* Copyright (c) 1990 The Regents of the University of California.
|
|
|
|
|
* All rights reserved.
|
|
|
|
|
*
|
|
|
|
|
* This code is derived from software contributed to Berkeley by
|
|
|
|
|
* the Systems Programming Group of the University of Utah Computer
|
|
|
|
|
* Science Department.
|
|
|
|
|
*
|
|
|
|
|
* 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)
|
1993-08-26 06:11:52 +04:00
|
|
|
.text
|
1993-08-01 21:54:45 +04:00
|
|
|
/*.asciz "from: @(#)strncpy.s 5.1 (Berkeley) 5/12/90"*/
|
1993-08-26 06:11:52 +04:00
|
|
|
.asciz "$Id: strncpy.s,v 1.3 1993/08/26 02:12:56 mycroft Exp $"
|
1993-05-13 17:51:52 +04:00
|
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
|
|
|
|
|
|
#include "DEFS.h"
|
|
|
|
|
|
|
|
|
|
ENTRY(strncpy)
|
|
|
|
|
movl sp@(4),d0 /* return value is toaddr */
|
|
|
|
|
movl sp@(12),d1 /* count */
|
|
|
|
|
jeq scdone /* nothing to do */
|
|
|
|
|
movl sp@(8),a0 /* a0 = fromaddr */
|
|
|
|
|
movl d0,a1 /* a1 = toaddr */
|
|
|
|
|
scloop:
|
|
|
|
|
movb a0@+,a1@+ /* copy a byte */
|
|
|
|
|
jeq scploop /* copied null, go pad if necessary */
|
|
|
|
|
subql #1,d1 /* adjust count */
|
|
|
|
|
jne scloop /* more room, keep going */
|
|
|
|
|
scdone:
|
|
|
|
|
rts
|
|
|
|
|
scploop:
|
|
|
|
|
subql #1,d1 /* adjust count */
|
|
|
|
|
jeq scdone /* no more room, all done */
|
|
|
|
|
clrb a1@+ /* clear a byte */
|
|
|
|
|
jra scploop /* keep going */
|
