2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * $FreeBSD: src/sys/boot/i386/libi386/elf_freebsd.c,v 1.7.2.2 2000/12/28 13:12:40 ps Exp $
27 * $DragonFly: src/sys/boot/i386/libi386/Attic/elf_freebsd.c,v 1.2 2003/06/17 04:28:18 dillon Exp $
30 #include <sys/param.h>
32 #include <sys/reboot.h>
33 #include <sys/linker.h>
35 #include <machine/bootinfo.h>
36 #include <machine/elf.h>
39 #include "bootstrap.h"
43 static int elf_exec(struct loaded_module *amp);
45 struct module_format i386_elf = { elf_loadmodule, elf_exec };
48 * There is an a.out kernel and one or more a.out modules loaded.
49 * We wish to start executing the kernel image, so make such
50 * preparations as are required, and do so.
53 elf_exec(struct loaded_module *mp)
55 struct module_metadata *md;
57 vm_offset_t entry, bootinfop;
58 int boothowto, err, bootdev;
60 vm_offset_t ssym, esym;
62 if ((md = mod_findmetadata(mp, MODINFOMD_ELFHDR)) == NULL)
63 return(EFTYPE); /* XXX actually EFUCKUP */
64 ehdr = (Elf_Ehdr *)&(md->md_data);
66 if ((err = bi_load(mp->m_args, &boothowto, &bootdev, &bootinfop)) != 0)
68 entry = ehdr->e_entry & 0xffffff;
71 if ((md = mod_findmetadata(mp, MODINFOMD_SSYM)) != NULL)
72 ssym = *((vm_offset_t *)&(md->md_data));
73 if ((md = mod_findmetadata(mp, MODINFOMD_ESYM)) != NULL)
74 esym = *((vm_offset_t *)&(md->md_data));
75 if (ssym == 0 || esym == 0)
76 ssym = esym = 0; /* sanity */
77 bi = (struct bootinfo *)PTOV(bootinfop);
78 bi->bi_symtab = ssym; /* XXX this is only the primary kernel symtab */
79 bi->bi_esymtab = esym;
83 printf("Start @ 0x%lx ...\n", entry);
87 __exec((void *)entry, boothowto, bootdev, 0, 0, 0, bootinfop);
89 panic("exec returned");