freebsd-dev/sys/boot/i386/libi386/elf32_freebsd.c
Peter Wemm 1d59e49683 Turn symbol table info passing back on, although it's probably not
particularly useful in this form.  KLD can deal with it much better.
setenv kernelname moved earlier.
1998-10-09 23:22:30 +00:00

91 lines
3.1 KiB
C

/*-
* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 AUTHOR 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.
*
* $Id: elf_freebsd.c,v 1.5 1998/10/04 20:58:46 msmith Exp $
*/
#include <sys/param.h>
#include <sys/exec.h>
#include <sys/reboot.h>
#include <sys/linker.h>
#include <string.h>
#include <machine/bootinfo.h>
#include <machine/elf.h>
#include <stand.h>
#include "bootstrap.h"
#include "libi386.h"
#include "btxv86.h"
static int elf_exec(struct loaded_module *amp);
struct module_format i386_elf = { elf_loadmodule, elf_exec };
static struct bootinfo bi;
/*
* There is an a.out kernel and one or more a.out modules loaded.
* We wish to start executing the kernel image, so make such
* preparations as are required, and do so.
*/
static int
elf_exec(struct loaded_module *mp)
{
struct module_metadata *md;
Elf_Ehdr *ehdr;
vm_offset_t entry, bootinfop;
int boothowto, err, bootdev;
struct bootinfo *bi;
vm_offset_t ssym, esym;
if ((md = mod_findmetadata(mp, MODINFOMD_ELFHDR)) == NULL)
return(EFTYPE); /* XXX actually EFUCKUP */
ehdr = (Elf_Ehdr *)&(md->md_data);
if ((err = bi_load(mp->m_args, &boothowto, &bootdev, &bootinfop)) != 0)
return(err);
entry = ehdr->e_entry & 0xffffff;
ssym = esym = 0;
if ((md = mod_findmetadata(mp, MODINFOMD_SSYM)) != NULL)
ssym = *((vm_offset_t *)&(md->md_data));
if ((md = mod_findmetadata(mp, MODINFOMD_ESYM)) != NULL)
esym = *((vm_offset_t *)&(md->md_data));
if (ssym == 0 || esym == 0)
ssym = esym = 0; /* sanity */
bi = (struct bootinfo *)PTOV(bootinfop);
bi->bi_symtab = ssym; /* XXX this is only the primary kernel symtab */
bi->bi_esymtab = esym;
#ifdef DEBUG
printf("Start @ 0x%lx ...\n", entry);
#endif
__exec((void *)entry, boothowto, bootdev, 0, 0, 0, bootinfop);
panic("exec returned");
}