sys/arch/hp700/stand/common/exec_som.c

   1 /*      $NetBSD: exec_som.c,v 1.3 2007/03/03 14:37:54 skrll Exp $       */
   2
   3 /*      $OpenBSD: exec_som.c,v 1.1 1999/12/23 04:10:30 mickey Exp $     */
   4
   5 /*
   6  * Copyright (c) 1999 Michael Shalayeff
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted provided that the following conditions
  11  * are met:
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21  * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
  22  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  24  * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  26  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  27  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  28  * THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31
  32 #include <sys/param.h>
  33 #include "libsa.h"
  34 #include <machine/exec.h>
  35 #include <lib/libsa/exec.h>
  36
  37 int
  38 som_probe(int fd, union x_header *hdr)
  39 {
  40         return !SOM_BADMAGIC(&hdr->x_som);
  41 }
  42
  43
  44 int
  45 som_load(int fd, struct x_param *xp)
  46 {
  47         struct som_filehdr *xf = &xp->xp_hdr->x_som;
  48         struct som_exec_aux x;
  49
  50         if (lseek(fd, xf->aux_loc, SEEK_SET) < 0 ||
  51             read (fd, &x, sizeof(x)) != sizeof(x)) {
  52                 if (!errno)
  53                         errno = EIO;
  54                 return -1;
  55         }
  56
  57         xp->xp_entry = x.a_entry;
  58
  59         xp->text.size = round_page(x.a_tsize);
  60         xp->data.size = round_page(x.a_dsize);
  61         xp->bss.size = x.a_bsize;
  62         xp->sym.size = xf->sym_total * sizeof(struct som_sym);
  63         xp->str.size = xf->strings_size;
  64
  65         xp->text.foff = x.a_tfile;
  66         xp->data.foff = x.a_dfile;
  67         xp->bss.foff = 0;
  68         if (xf->sym_total) {
  69                 xp->sym.foff = xf->sym_loc;
  70                 xp->str.foff = xf->strings_loc;
  71         }
  72
  73         xp->text.addr = x.a_tmem;
  74         xp->data.addr = x.a_dmem;
  75         xp->bss.addr = xp->data.addr + x.a_dsize;
  76         xp->sym.addr = xp->bss.addr + xp->bss.size;
  77         xp->str.addr = xp->sym.addr + xp->sym.size;
  78
  79         return 0;
  80 }
  81
  82 int
  83 som_ldsym(int fd, struct x_param *xp)
  84 {
  85         return -1;
  86 }