1/* $NetBSD: startit.s,v 1.3 2009/11/15 20:38:36 snj 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 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * 29 * From: $NetBSD: startit.s,v 1.3 2009/11/15 20:38:36 snj Exp $ 30 */ 31#include "machine/asm.h" 32 33 .set ABSEXECBASE,4 34 35 .text 36 37ENTRY_NOPROFILE(startit) 38 movel 4:w,%a6 | SysBase 39 movel %sp@(4),%a0 | Boot loader address 40 movel %sp@(8),%a1 | IOR 41 movel %sp@(12),%a5 | Console data 42/* 43 * Installboot can modify the default command in the bootblock loader, 44 * but boot.amiga uses the default command in boot.amiga. Copy the 45 * possibly modified default command before entering the boot loader. 46 */ 47 lea %pc@(_C_LABEL(default_command)),%a2 48 lea %a0@(16),%a3 49 moveq #(32/4)-1,%d0 50Lcommand: 51 movel %a2@+,%a3@+ 52 dbra %d0,Lcommand 53 54 jsr %a0@(12) 55 rts 56