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/* $OpenBSD: exec_i386.c,v 1.13 1997/08/22 20:13:43 mickey Exp $ */
/*
* Copyright (c) 1997 Michael Shalayeff
* Copyright (c) 1997 Tobias Weingartner
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Michael Shalayeff.
* This product includes software developed by Tobias Weingartner.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <sys/param.h>
#include <sys/exec.h>
#include <sys/reboot.h>
#include <dev/cons.h>
#include <machine/biosvar.h>
#include "libsa.h"
#define round_to_size(x) (((int)(x) + sizeof(int) - 1) & ~(sizeof(int) - 1))
void
machdep_start(startaddr, howto, loadaddr, ssym, esym)
char *startaddr, *loadaddr, *ssym, *esym;
int howto;
{
#ifdef DEBUG
struct exec *x;
x = (void *)loadaddr;
printf("exec {\n\ta_midmag = %lx\n\ta_text = %lx\n\ta_data = %lx\n"
"\ta_bss = %lx\n\ta_syms = %lx\n\ta_entry = %lx\n"
"\ta_trsize = %lx\n\ta_drsize = %lx\n}\n",
x->a_midmag, x->a_text, x->a_data, x->a_bss, x->a_syms,
x->a_entry, x->a_trsize, x->a_drsize);
printf("/bsd(%x,%x,%x,%x,%x,%x,%x)\n",
howto, bootdev, 0, round_to_size(esym),
BIOS_vars.bios_extmem, BIOS_vars.bios_cnvmem,
(int)&BIOS_vars);
getchar();
#endif
if (cn_tab != NULL)
BIOS_vars.boot_consdev = cn_tab->cn_dev;
(int)startaddr &= 0xffffff;
printf("entry point at 0x%x\n", (int)startaddr);
/* stack and the gung is ok at this point, so, no need for asm setup */
(*(int __attribute__((noreturn))(*)(int,int,int,int,int,int,int))
startaddr)(howto, bootdev, 0, round_to_size(esym),
BIOS_vars.bios_extmem, BIOS_vars.bios_cnvmem,
(int)&BIOS_vars);
/* not reached */
}
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