sys/boot/ofw/libofw/elf_freebsd.c

   1 /*-
   2  * Copyright (c) 2001 Benno Rice <benno@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/ofw/libofw/elf_freebsd.c,v 1.5 2003/05/01 03:56:30 peter Exp $
  27  * $DragonFly: src/sys/boot/ofw/libofw/elf_freebsd.c,v 1.1 2003/11/10 06:08:37 dillon Exp $
  28  */
  29
  30 #include <sys/param.h>
  31 #include <sys/linker.h>
  32
  33 #include <machine/metadata.h>
  34 #include <machine/elf.h>
  35
  36 #include <stand.h>
  37
  38 #include "bootstrap.h"
  39 #include "libofw.h"
  40 #include "openfirm.h"
  41
  42 extern char             end[];
  43 extern vm_offset_t      reloc;  /* From <arch>/conf.c */
  44
  45 int
  46 __elfN(ofw_loadfile)(char *filename, vm_offset_t dest,
  47     struct preloaded_file **result)
  48 {
  49         int     r;
  50         void    *addr;
  51
  52         r = __elfN(loadfile)(filename, dest, result);
  53         if (r != 0)
  54                 return (r);
  55
  56         return (0);
  57 }
  58
  59 int
  60 __elfN(ofw_exec)(struct preloaded_file *fp)
  61 {
  62         struct file_metadata    *fmp;
  63         vm_offset_t             mdp;
  64         Elf_Ehdr                *e;
  65         int                     error;
  66
  67         if ((fmp = file_findmetadata(fp, MODINFOMD_ELFHDR)) == NULL) {
  68                 return(EFTYPE);
  69         }
  70         e = (Elf_Ehdr *)&fmp->md_data;
  71
  72         if ((error = md_load(fp->f_args, &mdp)) != 0)
  73                 return (error);
  74
  75         printf("Kernel entry at 0x%lx ...\n", e->e_entry);
  76
  77         dev_cleanup();
  78         ofw_release_heap();
  79         OF_chain((void *)reloc, end - (char *)reloc, (void *)e->e_entry,
  80             (void *)mdp, sizeof(mdp));
  81
  82         panic("exec returned");
  83 }
  84
  85 struct file_format      ofw_elf =
  86 {
  87         __elfN(ofw_loadfile),
  88         __elfN(ofw_exec)
  89 };