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

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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: head/sys/boot/i386/libi386/elf64_freebsd.c 113083 2003-04-04 16:35:16Z phk $
27 */
28
29#include <sys/param.h>
30#include <sys/exec.h>
31#include <sys/linker.h>
32#include <string.h>
33#include <machine/bootinfo.h>
34#include <machine/elf.h>
35#include <stand.h>
36
37#include "bootstrap.h"
38#include "libi386.h"
39#include "btxv86.h"
40
41static int elf_exec(struct preloaded_file *amp);
42
43struct file_format i386_elf = { elf_loadfile, elf_exec };
44
45/*
46 * There is an a.out kernel and one or more a.out modules loaded.
47 * We wish to start executing the kernel image, so make such
48 * preparations as are required, and do so.
49 */
50static int
51elf_exec(struct preloaded_file *fp)
52{
53 struct file_metadata *md;
54 Elf_Ehdr *ehdr;
55 vm_offset_t entry, bootinfop;
56 int boothowto, err, bootdev;
57 struct bootinfo *bi;
58 vm_offset_t ssym, esym;
59
60 if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL)
61 return(EFTYPE); /* XXX actually EFUCKUP */
62 ehdr = (Elf_Ehdr *)&(md->md_data);
63
64 if ((err = bi_load(fp->f_args, &boothowto, &bootdev, &bootinfop)) != 0)
65 return(err);
66 entry = ehdr->e_entry & 0xffffff;
67
68 ssym = esym = 0;
69 if ((md = file_findmetadata(fp, MODINFOMD_SSYM)) != NULL)
70 ssym = *((vm_offset_t *)&(md->md_data));
71 if ((md = file_findmetadata(fp, MODINFOMD_ESYM)) != NULL)
72 esym = *((vm_offset_t *)&(md->md_data));
73 if (ssym == 0 || esym == 0)
74 ssym = esym = 0; /* sanity */
75 bi = (struct bootinfo *)PTOV(bootinfop);
76 bi->bi_symtab = ssym; /* XXX this is only the primary kernel symtab */
77 bi->bi_esymtab = esym;
78
79
80#ifdef DEBUG
81 printf("Start @ 0x%lx ...\n", entry);
82#endif
83
84 dev_cleanup();
85 __exec((void *)entry, boothowto, bootdev, 0, 0, 0, bootinfop);
86
87 panic("exec returned");
88}