91 lines
3.0 KiB
C
91 lines
3.0 KiB
C
/*-
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* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/exec.h>
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#include <sys/reboot.h>
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#include <sys/linker.h>
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#include <string.h>
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#include <machine/bootinfo.h>
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#include <machine/elf.h>
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#include <stand.h>
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#include "bootstrap.h"
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#include "libi386.h"
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#include "btxv86.h"
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static int elf_exec(struct loaded_module *amp);
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struct module_format i386_elf = { elf_loadmodule, elf_exec };
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static struct bootinfo bi;
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/*
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* There is an a.out kernel and one or more a.out modules loaded.
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* We wish to start executing the kernel image, so make such
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* preparations as are required, and do so.
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*/
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static int
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elf_exec(struct loaded_module *mp)
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{
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struct module_metadata *md;
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Elf_Ehdr *ehdr;
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vm_offset_t entry, bootinfop;
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int boothowto, err, bootdev;
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struct bootinfo *bi;
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vm_offset_t ssym, esym;
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if ((md = mod_findmetadata(mp, MODINFOMD_ELFHDR)) == NULL)
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return(EFTYPE); /* XXX actually EFUCKUP */
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ehdr = (Elf_Ehdr *)&(md->md_data);
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if ((err = bi_load(mp->m_args, &boothowto, &bootdev, &bootinfop)) != 0)
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return(err);
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entry = ehdr->e_entry & 0xffffff;
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ssym = esym = 0;
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if ((md = mod_findmetadata(mp, MODINFOMD_SSYM)) != NULL)
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ssym = *((vm_offset_t *)&(md->md_data));
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if ((md = mod_findmetadata(mp, MODINFOMD_ESYM)) != NULL)
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esym = *((vm_offset_t *)&(md->md_data));
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if (ssym == 0 || esym == 0)
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ssym = esym = 0; /* sanity */
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bi = (struct bootinfo *)PTOV(bootinfop);
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bi->bi_symtab = ssym; /* XXX this is only the primary kernel symtab */
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bi->bi_esymtab = esym;
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#ifdef DEBUG
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printf("Start @ 0x%lx ...\n", entry);
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#endif
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__exec((void *)entry, boothowto, bootdev, 0, 0, 0, bootinfop);
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panic("exec returned");
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}
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