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
27 #include <sys/param.h>
28 #include <sys/exec.h>
29 #include <sys/linker.h>
30 #include <string.h>
31 #include <machine/bootinfo.h>
32 #include <machine/elf.h>
33 #include <stand.h>
34
35 #include "bootstrap.h"
36 #include "libi386.h"
37 #include "btxv86.h"
38
39 static int elf32_exec(struct preloaded_file *amp);
40 static int elf32_obj_exec(struct preloaded_file *amp);
41
42 struct file_format i386_elf = { elf32_loadfile, elf32_exec };
43 struct file_format i386_elf_obj = { elf32_obj_loadfile, elf32_obj_exec };
44
45 /*
46 * There is an ELF kernel and one or more ELF modules loaded.
47 * We wish to start executing the kernel image, so make such
48 * preparations as are required, and do so.
49 */
50 static int
elf32_exec(struct preloaded_file * fp)51 elf32_exec(struct preloaded_file *fp)
52 {
53 struct file_metadata *md;
54 Elf_Ehdr *ehdr;
55 vm_offset_t entry, bootinfop, modulep, kernend;
56 int boothowto, err, bootdev;
57
58 if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL)
59 return(EFTYPE);
60 ehdr = (Elf_Ehdr *)&(md->md_data);
61
62 err = bi_load32(fp->f_args, &boothowto, &bootdev, &bootinfop, &modulep, &kernend);
63 if (err != 0)
64 return(err);
65 entry = ehdr->e_entry & 0xffffff;
66
67 #ifdef DEBUG
68 printf("Start @ 0x%lx ...\n", entry);
69 #endif
70
71 dev_cleanup();
72 __exec((void *)entry, boothowto, bootdev, 0, 0, 0, bootinfop, modulep, kernend);
73
74 panic("exec returned");
75 }
76
77 static int
elf32_obj_exec(struct preloaded_file * fp)78 elf32_obj_exec(struct preloaded_file *fp)
79 {
80 return (EFTYPE);
81 }
82