1 /* $NetBSD: start.S,v 1.2 2002/11/16 08:55:05 wdk Exp $ */
4 * Copyright (c) 2000 The NetBSD Foundation, Inc.
7 * This code is derived from software contributed to The NetBSD Foundation
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
33 #include <mips/cpuregs.h>
34 #include <machine/prom.h>
41 la sp, start - CALLFRAME_SIZ
42 sw zero, CALLFRAME_RA(sp) # clear ra for debugger
43 sw zero, CALLFRAME_SP(sp) # clear fp for debugger
44 move s0, a0 # save argc
45 move s1, a1 # save argv
47 la a0, _C_LABEL (edata) # clear BSS
50 jal _C_LABEL(memset) # memset(edata, 0, end - edata)
53 move a0, s0 # restore argc
54 jal _C_LABEL(main) # main(argc, argv)
55 move a1, s1 # restore argv
58 la t9, _C_LABEL(prom_restart) # restart...