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      1  1.4  tsutsui /*	$NetBSD: locore.S,v 1.4 2008/05/14 13:29:28 tsutsui Exp $	*/
      2  1.1  tsutsui 
      3  1.1  tsutsui /*-
      4  1.4  tsutsui  * Copyright (c) 1999 Izumi Tsutsui.  All rights reserved.
      5  1.1  tsutsui  *
      6  1.1  tsutsui  * Redistribution and use in source and binary forms, with or without
      7  1.1  tsutsui  * modification, are permitted provided that the following conditions
      8  1.1  tsutsui  * are met:
      9  1.1  tsutsui  * 1. Redistributions of source code must retain the above copyright
     10  1.1  tsutsui  *    notice, this list of conditions and the following disclaimer.
     11  1.1  tsutsui  * 2. Redistributions in binary form must reproduce the above copyright
     12  1.1  tsutsui  *    notice, this list of conditions and the following disclaimer in the
     13  1.1  tsutsui  *    documentation and/or other materials provided with the distribution.
     14  1.1  tsutsui  *
     15  1.1  tsutsui  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     16  1.1  tsutsui  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     17  1.1  tsutsui  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     18  1.1  tsutsui  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     19  1.1  tsutsui  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     20  1.1  tsutsui  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     21  1.1  tsutsui  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     22  1.1  tsutsui  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  1.4  tsutsui  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     24  1.4  tsutsui  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  1.1  tsutsui  */
     26  1.1  tsutsui 
     27  1.1  tsutsui #include <m68k/asm.h>
     28  1.3  tsutsui 
     29  1.3  tsutsui 	.set	IC_CLEAR,0x9
     30  1.1  tsutsui 
     31  1.1  tsutsui 	.text
     32  1.1  tsutsui 	.align	4
     33  1.1  tsutsui 
     34  1.1  tsutsui ASENTRY_NOPROFILE(start)
     35  1.1  tsutsui 	lea	_C_LABEL(edata),%a0	| clear out BSS
     36  1.1  tsutsui 	movl	#_C_LABEL(end) - 4,%d0
     37  1.1  tsutsui 	subl	#_C_LABEL(edata),%d0
     38  1.1  tsutsui 	lsrl	#2,%d0
     39  1.1  tsutsui 1:
     40  1.1  tsutsui 	clrl	%a0@+
     41  1.1  tsutsui 	dbra	%d0,1b
     42  1.1  tsutsui 
     43  1.1  tsutsui 	jra	_C_LABEL(boot)
     44  1.1  tsutsui 
     45  1.1  tsutsui ENTRY_NOPROFILE(ICIA)
     46  1.3  tsutsui 	movl	#IC_CLEAR,%d0
     47  1.3  tsutsui 	movc	%d0,%cacr
     48  1.1  tsutsui 	rts
     49