1 /* $NetBSD: Locore.c,v 1.7 2000/08/20 07:04:59 tsubai Exp $ */
2 /*-
3 * Copyright (C) 1995, 1996 Wolfgang Solfrank.
4 * Copyright (C) 1995, 1996 TooLs GmbH.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by TooLs GmbH.
18 * 4. The name of TooLs GmbH may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
27 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
28 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
29 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
30 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
35
36 #include <stand.h>
37 #include "libofw.h"
38
39 void startup(void *, int, int (*)(void *), char *, int);
40
41 __asm(" \n\
42 .data \n\
43 .align 4 \n\
44 stack: \n\
45 .space 16388 \n\
46 \n\
47 .text \n\
48 .globl _start \n\
49 _start: \n\
50 lis %r1,stack@ha \n\
51 addi %r1,%r1,stack@l \n\
52 addi %r1,%r1,8192 \n\
53 \n\
54 /* Clear the .bss!!! */ \n\
55 li %r0,0 \n\
56 lis %r8,_edata@ha \n\
57 addi %r8,%r8,_edata@l\n\
58 lis %r9,_end@ha \n\
59 addi %r9,%r9,_end@l \n\
60 \n\
61 1: cmpw 0,%r8,%r9 \n\
62 bge 2f \n\
63 stw %r0,0(%r8) \n\
64 addi %r8,%r8,4 \n\
65 b 1b \n\
66 \n\
67 2: b startup \n\
68 ");
69
70 void main(int (*openfirm)(void *));
71
72 void
startup(void * vpd,int res,int (* openfirm)(void *),char * arg,int argl)73 startup(void *vpd, int res, int (*openfirm)(void *), char *arg, int argl)
74 {
75 main(openfirm);
76 }
77