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freebsd-skq/sys/boot/i386/libi386/elf32_freebsd.c

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i386 ELF loader startup backend. On an ELF kernel booted with the 3-stage bootblocks, the kernel shows up as the primary module: [3:24am]~-100# kldstat Id Refs Address Size Name 1 1 0xf0100000 ff00000 /kernel ^^^^ oops.. :-) Based heavily on aout_freebsd.c. Hmm.. There's so much in common that these could probably be combined and just check the metadata to see which format it is.
1998-09-30 19:48:09 +00:00
/*-
* Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
$Id$ -> $FreeBSD$
1999-08-28 01:08:13 +00:00
* $FreeBSD$
i386 ELF loader startup backend. On an ELF kernel booted with the 3-stage bootblocks, the kernel shows up as the primary module: [3:24am]~-100# kldstat Id Refs Address Size Name 1 1 0xf0100000 ff00000 /kernel ^^^^ oops.. :-) Based heavily on aout_freebsd.c. Hmm.. There's so much in common that these could probably be combined and just check the metadata to see which format it is.
1998-09-30 19:48:09 +00:00
*/
#include <sys/param.h>
#include <sys/exec.h>
#include <sys/linker.h>
#include <string.h>
#include <machine/bootinfo.h>
#include <machine/elf.h>
#include <stand.h>
#include "bootstrap.h"
#include "libi386.h"
#include "btxv86.h"
Update loader logic to distinguish modules vs. files. Add support for module metadata. The old way of dependancy handling will be supported for a while. Reviewed by: peter
2000-05-01 17:41:25 +00:00
static int elf_exec(struct preloaded_file *amp);
i386 ELF loader startup backend. On an ELF kernel booted with the 3-stage bootblocks, the kernel shows up as the primary module: [3:24am]~-100# kldstat Id Refs Address Size Name 1 1 0xf0100000 ff00000 /kernel ^^^^ oops.. :-) Based heavily on aout_freebsd.c. Hmm.. There's so much in common that these could probably be combined and just check the metadata to see which format it is.
1998-09-30 19:48:09 +00:00
Update loader logic to distinguish modules vs. files. Add support for module metadata. The old way of dependancy handling will be supported for a while. Reviewed by: peter
2000-05-01 17:41:25 +00:00
struct file_format i386_elf = { elf_loadfile, elf_exec };
i386 ELF loader startup backend. On an ELF kernel booted with the 3-stage bootblocks, the kernel shows up as the primary module: [3:24am]~-100# kldstat Id Refs Address Size Name 1 1 0xf0100000 ff00000 /kernel ^^^^ oops.. :-) Based heavily on aout_freebsd.c. Hmm.. There's so much in common that these could probably be combined and just check the metadata to see which format it is.
1998-09-30 19:48:09 +00:00
/*
* There is an a.out kernel and one or more a.out modules loaded.
* We wish to start executing the kernel image, so make such
* preparations as are required, and do so.
*/
static int
Update loader logic to distinguish modules vs. files. Add support for module metadata. The old way of dependancy handling will be supported for a while. Reviewed by: peter
2000-05-01 17:41:25 +00:00
elf_exec(struct preloaded_file *fp)
i386 ELF loader startup backend. On an ELF kernel booted with the 3-stage bootblocks, the kernel shows up as the primary module: [3:24am]~-100# kldstat Id Refs Address Size Name 1 1 0xf0100000 ff00000 /kernel ^^^^ oops.. :-) Based heavily on aout_freebsd.c. Hmm.. There's so much in common that these could probably be combined and just check the metadata to see which format it is.
1998-09-30 19:48:09 +00:00
{
Update loader logic to distinguish modules vs. files. Add support for module metadata. The old way of dependancy handling will be supported for a while. Reviewed by: peter
2000-05-01 17:41:25 +00:00
struct file_metadata *md;
i386 ELF loader startup backend. On an ELF kernel booted with the 3-stage bootblocks, the kernel shows up as the primary module: [3:24am]~-100# kldstat Id Refs Address Size Name 1 1 0xf0100000 ff00000 /kernel ^^^^ oops.. :-) Based heavily on aout_freebsd.c. Hmm.. There's so much in common that these could probably be combined and just check the metadata to see which format it is.
1998-09-30 19:48:09 +00:00
Elf_Ehdr *ehdr;
Consolidate the bootinfo-loading code, greatly simplifying the _exec functions.
1998-10-02 20:53:17 +00:00
vm_offset_t entry, bootinfop;
int boothowto, err, bootdev;
struct bootinfo *bi;
vm_offset_t ssym, esym;
i386 ELF loader startup backend. On an ELF kernel booted with the 3-stage bootblocks, the kernel shows up as the primary module: [3:24am]~-100# kldstat Id Refs Address Size Name 1 1 0xf0100000 ff00000 /kernel ^^^^ oops.. :-) Based heavily on aout_freebsd.c. Hmm.. There's so much in common that these could probably be combined and just check the metadata to see which format it is.
1998-09-30 19:48:09 +00:00
Update loader logic to distinguish modules vs. files. Add support for module metadata. The old way of dependancy handling will be supported for a while. Reviewed by: peter
2000-05-01 17:41:25 +00:00
if ((md = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL)
i386 ELF loader startup backend. On an ELF kernel booted with the 3-stage bootblocks, the kernel shows up as the primary module: [3:24am]~-100# kldstat Id Refs Address Size Name 1 1 0xf0100000 ff00000 /kernel ^^^^ oops.. :-) Based heavily on aout_freebsd.c. Hmm.. There's so much in common that these could probably be combined and just check the metadata to see which format it is.
1998-09-30 19:48:09 +00:00
return(EFTYPE); /* XXX actually EFUCKUP */
ehdr = (Elf_Ehdr *)&(md->md_data);
Update loader logic to distinguish modules vs. files. Add support for module metadata. The old way of dependancy handling will be supported for a while. Reviewed by: peter
2000-05-01 17:41:25 +00:00
if ((err = bi_load(fp->f_args, &boothowto, &bootdev, &bootinfop)) != 0)
Consolidate the bootinfo-loading code, greatly simplifying the _exec functions.
1998-10-02 20:53:17 +00:00
return(err);
entry = ehdr->e_entry & 0xffffff;
i386 ELF loader startup backend. On an ELF kernel booted with the 3-stage bootblocks, the kernel shows up as the primary module: [3:24am]~-100# kldstat Id Refs Address Size Name 1 1 0xf0100000 ff00000 /kernel ^^^^ oops.. :-) Based heavily on aout_freebsd.c. Hmm.. There's so much in common that these could probably be combined and just check the metadata to see which format it is.
1998-09-30 19:48:09 +00:00
biosdisk.c Allocate space for, and copy, NDOSPART slice entries from the MBR, not just one. Add some extra debugging while we're at it. elf_freebsd.c Initialise the symbol table start/end pointers in case we don't have them.
1998-10-04 09:12:15 +00:00
ssym = esym = 0;
Update loader logic to distinguish modules vs. files. Add support for module metadata. The old way of dependancy handling will be supported for a while. Reviewed by: peter
2000-05-01 17:41:25 +00:00
if ((md = file_findmetadata(fp, MODINFOMD_SSYM)) != NULL)
First shot at loading elf symbols. Things are a bit strange because of the ..umm.. "wierd" way binutils lays out the file. The section headers are nearly at the end of the file and this is a problem when loading from a .gz file which can't seek backwards (or has a limited reverse seek, ~2K from memory). This is intended to be compatable with the ddb/db_elf.c code and the alpha/libalpha/elf_freebsd.c layout. I've studied these (which are NetBSD derived) but did it a bit differently. Naturally the process is similar since it's supposed to end up with the same result.
1998-10-02 08:04:56 +00:00
ssym = *((vm_offset_t *)&(md->md_data));
Update loader logic to distinguish modules vs. files. Add support for module metadata. The old way of dependancy handling will be supported for a while. Reviewed by: peter
2000-05-01 17:41:25 +00:00
if ((md = file_findmetadata(fp, MODINFOMD_ESYM)) != NULL)
First shot at loading elf symbols. Things are a bit strange because of the ..umm.. "wierd" way binutils lays out the file. The section headers are nearly at the end of the file and this is a problem when loading from a .gz file which can't seek backwards (or has a limited reverse seek, ~2K from memory). This is intended to be compatable with the ddb/db_elf.c code and the alpha/libalpha/elf_freebsd.c layout. I've studied these (which are NetBSD derived) but did it a bit differently. Naturally the process is similar since it's supposed to end up with the same result.
1998-10-02 08:04:56 +00:00
esym = *((vm_offset_t *)&(md->md_data));
if (ssym == 0 || esym == 0)
ssym = esym = 0; /* sanity */
Consolidate the bootinfo-loading code, greatly simplifying the _exec functions.
1998-10-02 20:53:17 +00:00
bi = (struct bootinfo *)PTOV(bootinfop);
Turn symbol table info passing back on, although it's probably not particularly useful in this form. KLD can deal with it much better. setenv kernelname moved earlier.
1998-10-09 23:22:30 +00:00
bi->bi_symtab = ssym; /* XXX this is only the primary kernel symtab */
Consolidate the bootinfo-loading code, greatly simplifying the _exec functions.
1998-10-02 20:53:17 +00:00
bi->bi_esymtab = esym;
i386 ELF loader startup backend. On an ELF kernel booted with the 3-stage bootblocks, the kernel shows up as the primary module: [3:24am]~-100# kldstat Id Refs Address Size Name 1 1 0xf0100000 ff00000 /kernel ^^^^ oops.. :-) Based heavily on aout_freebsd.c. Hmm.. There's so much in common that these could probably be combined and just check the metadata to see which format it is.
1998-09-30 19:48:09 +00:00
#ifdef DEBUG
printf("Start @ 0x%lx ...\n", entry);
#endif
Delay calling the device cleanup routines until the absolute last moment. We were cleaning up after PXE too early and the module dependancy code would not be able to load any files if it needed too.
2000-06-14 10:34:29 +00:00
dev_cleanup();
Consolidate the bootinfo-loading code, greatly simplifying the _exec functions.
1998-10-02 20:53:17 +00:00
__exec((void *)entry, boothowto, bootdev, 0, 0, 0, bootinfop);
i386 ELF loader startup backend. On an ELF kernel booted with the 3-stage bootblocks, the kernel shows up as the primary module: [3:24am]~-100# kldstat Id Refs Address Size Name 1 1 0xf0100000 ff00000 /kernel ^^^^ oops.. :-) Based heavily on aout_freebsd.c. Hmm.. There's so much in common that these could probably be combined and just check the metadata to see which format it is.
1998-09-30 19:48:09 +00:00
panic("exec returned");
}
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