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: stable/11/stand/powerpc/ofw/start.c 329175 2018-02-12 17:44:35Z kevans $");
35
36#include <stand.h>
37#include "libofw.h"
38
39void startup(void *, int, int (*)(void *), char *, int);
40
41__asm("				\n\
42	.data			\n\
43	.align 4		\n\
44stack:				\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\
611:	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\
672:	b	startup		\n\
68");
69
70void main(int (*openfirm)(void *));
71
72void
73startup(void *vpd, int res, int (*openfirm)(void *), char *arg, int argl)
74{
75	main(openfirm);
76}
77