bootblock/bootxx_ffs/startit.s

1.1.10.1  gehenna /*	$NetBSD: startit.s,v 1.1.10.1 2002/05/30 15:32:37 gehenna Exp $	*/
     1.1   mhitch
     1.1   mhitch /*
     1.1   mhitch  * Copyright (c) 1996 Ignatios Souvatzis
     1.1   mhitch  * Copyright (c) 1994 Michael L. Hitch
     1.1   mhitch  * All rights reserved.
     1.1   mhitch  *
     1.1   mhitch  * Redistribution and use in source and binary forms, with or without
     1.1   mhitch  * modification, are permitted provided that the following conditions
     1.1   mhitch  * are met:
     1.1   mhitch  * 1. Redistributions of source code must retain the above copyright
     1.1   mhitch  *    notice, this list of conditions and the following disclaimer.
     1.1   mhitch  * 2. Redistributions in binary form must reproduce the above copyright
     1.1   mhitch  *    notice, this list of conditions and the following disclaimer in the
     1.1   mhitch  *    documentation and/or other materials provided with the distribution.
     1.1   mhitch  * 3. All advertising materials mentioning features or use of this software
     1.1   mhitch  *    must display the following acknowledgement:
     1.1   mhitch  *      This product includes software developed by Michael L. Hitch.
     1.1   mhitch  * 4. The name of the author may not be used to endorse or promote products
     1.1   mhitch  *    derived from this software without specific prior written permission
     1.1   mhitch  *
     1.1   mhitch  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     1.1   mhitch  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     1.1   mhitch  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     1.1   mhitch  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     1.1   mhitch  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     1.1   mhitch  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     1.1   mhitch  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     1.1   mhitch  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     1.1   mhitch  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     1.1   mhitch  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     1.1   mhitch  *
     1.1   mhitch  *
1.1.10.1  gehenna  * From: $NetBSD: startit.s,v 1.1.10.1 2002/05/30 15:32:37 gehenna Exp $
     1.1   mhitch  */
     1.1   mhitch #include "machine/asm.h"
     1.1   mhitch
     1.1   mhitch 	.set	ABSEXECBASE,4
     1.1   mhitch
     1.1   mhitch 	.text
     1.1   mhitch
     1.1   mhitch ENTRY_NOPROFILE(startit)
     1.1   mhitch 	movel	4:w,%a6			| SysBase
     1.1   mhitch 	movel	%sp@(4),%a0		| Boot loader address
     1.1   mhitch 	movel	%sp@(8),%a1		| IOR
     1.1   mhitch 	movel	%sp@(12),%a5		| Console data
1.1.10.1  gehenna /*
1.1.10.1  gehenna  * Installboot can modify the default command in the bootblock loader,
1.1.10.1  gehenna  * but boot.amiga uses the default command in boot.amiga.  Copy the
1.1.10.1  gehenna  * possibly modified default command before entering the boot loader.
1.1.10.1  gehenna  */
1.1.10.1  gehenna 	lea	%pc@(_C_LABEL(default_command)),%a2
1.1.10.1  gehenna 	lea	%a0@(16),%a3
1.1.10.1  gehenna 	moveq	#(32/4)-1,%d0
1.1.10.1  gehenna Lcommand:
1.1.10.1  gehenna 	movel	%a2@+,%a3@+
1.1.10.1  gehenna 	dbra	%d0,Lcommand
1.1.10.1  gehenna
     1.1   mhitch 	jsr	%a0@(12)
     1.1   mhitch 	rts