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 42ENTRY_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 55Lcommand: 56 movel %a2@+,%a3@+ 57 dbra %d0,Lcommand 58 59 jsr %a0@(12) 60 rts 61