1 /*-
2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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.
13 *
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
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: src/sys/boot/i386/libi386/elf32_freebsd.c,v 1.13 2003/08/25 23:28:31 obrien Exp $
27 */
28
29 #define __ELF_WORD_SIZE 32
30 #include <sys/param.h>
31 #include <sys/exec.h>
32 #include <sys/linker.h>
33 #include <string.h>
34 #include <machine/bootinfo.h>
35 #include <machine/elf.h>
36 #include <stand.h>
37
38 #include "bootstrap.h"
39 #include "libi386.h"
40 #include "btxv86.h"
41
42 static int elf32_exec(struct preloaded_file *amp);
43 static int elf32_obj_exec(struct preloaded_file *amp);
44
45 struct file_format i386_elf = { elf32_loadfile, elf32_exec };
46 struct file_format i386_elf_obj = { elf32_obj_loadfile, elf32_obj_exec };
47
48 /*
49 * There is an ELF kernel and one or more ELF modules loaded.
50 * We wish to start executing the kernel image, so make such
51 * preparations as are required, and do so.
52 */
53 static int
elf32_exec(struct preloaded_file * fp)54 elf32_exec(struct preloaded_file *fp)
55 {
56 struct file_metadata *md;
57 Elf_Ehdr *ehdr;
58 vm_offset_t entry, bootinfop, modulep, kernend;
59 int boothowto, err, bootdev;
60
61 if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL)
62 return(EFTYPE); /* XXX actually EFUCKUP */
63 ehdr = (Elf_Ehdr *)&(md->md_data);
64
65 err = bi_load32(fp->f_args, &boothowto, &bootdev, &bootinfop, &modulep, &kernend);
66 if (err != 0)
67 return(err);
68 entry = ehdr->e_entry & 0xffffff;
69
70 #ifdef DEBUG
71 printf("Start @ 0x%lx ...\n", entry);
72 #endif
73
74 dev_cleanup();
75 __exec((void *)entry, boothowto, bootdev, 0, 0, 0, bootinfop, modulep, kernend);
76
77 panic("exec returned");
78 }
79
80 static int
elf32_obj_exec(struct preloaded_file * fp)81 elf32_obj_exec(struct preloaded_file *fp)
82 {
83 return (EFTYPE);
84 }
85