Home | History | Annotate | Line # | Download | only in bootxx_ffs
startit.s revision 1.2 
      1 /*	$NetBSD: startit.s,v 1.2 2002/05/20 05:58:45 mhitch Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1996 Ignatios Souvatzis
      5  * Copyright (c) 1994 Michael L. Hitch
      6  * All rights reserved.
      7  *
      8  * Redistribution and use in source and binary forms, with or without
      9  * modification, are permitted provided that the following conditions
     10  * are met:
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  * 3. All advertising materials mentioning features or use of this software
     17  *    must display the following acknowledgement:
     18  *      This product includes software developed by Michael L. Hitch.
     19  * 4. The name of the author may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  *
     33  *
     34  * From: $NetBSD: startit.s,v 1.2 2002/05/20 05:58:45 mhitch Exp $
     35  */
     36 #include "machine/asm.h"
     37 
     38 	.set	ABSEXECBASE,4
     39 
     40 	.text
     41 
     42 ENTRY_NOPROFILE(startit)
     43 	movel	4:w,%a6			| SysBase
     44 	movel	%sp@(4),%a0		| Boot loader address
     45 	movel	%sp@(8),%a1		| IOR
     46 	movel	%sp@(12),%a5		| Console data
     47 /*
     48  * Installboot can modify the default command in the bootblock loader,
     49  * but boot.amiga uses the default command in boot.amiga.  Copy the
     50  * possibly modified default command before entering the boot loader.
     51  */
     52 	lea	%pc@(_C_LABEL(default_command)),%a2
     53 	lea	%a0@(16),%a3
     54 	moveq	#(32/4)-1,%d0
     55 Lcommand:
     56 	movel	%a2@+,%a3@+
     57 	dbra	%d0,Lcommand
     58 
     59 	jsr	%a0@(12)
     60 	rts
     61