objcommon.c

   1 /*  Copyright (C) 2008  Jeffrey Brian Arnold <jbarnold@mit.edu>
   2  *
   3  *  This program is free software; you can redistribute it and/or modify
   4  *  it under the terms of the GNU General Public License, version 2.
   5  *
   6  *  This program is distributed in the hope that it will be useful,
   7  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   8  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   9  *  GNU General Public License for more details.
  10  *
  11  *  You should have received a copy of the GNU General Public License
  12  *  along with this program; if not, write to the Free Software
  13  *  Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
  14  *  02110-1301, USA.
  15  */
  16
  17 #include "objcommon.h"
  18
  19 long
  20 get_syms(bfd * abfd, asymbol *** syms_ptr)
  21 {
  22         long storage_needed = bfd_get_symtab_upper_bound(abfd);
  23         if (storage_needed == 0)
  24                 return 0;
  25         assert(storage_needed >= 0);
  26
  27         *syms_ptr = (asymbol **) malloc(storage_needed);
  28         long num_syms = bfd_canonicalize_symtab(abfd, *syms_ptr);
  29         assert(num_syms >= 0);
  30
  31         return num_syms;
  32 }
  33
  34 struct supersect *
  35 fetch_supersect(bfd * abfd, asection * sect, asymbol ** sympp)
  36 {
  37         static struct supersect *supersects = NULL;
  38
  39         struct supersect *ss;
  40         for (ss = supersects; ss != NULL; ss = ss->next) {
  41                 if (strcmp(sect->name, ss->name) == 0 && ss->parent == abfd) {
  42                         return ss;
  43                 }
  44         }
  45
  46         struct supersect *new = malloc(sizeof (*new));
  47         new->parent = abfd;
  48         new->name = malloc(strlen(sect->name) + 1);
  49         strcpy(new->name, sect->name);
  50         new->next = supersects;
  51         supersects = new;
  52
  53         new->contents_size = bfd_get_section_size(sect);
  54         new->contents = (void *) malloc(align(new->contents_size, 4));
  55         assert(bfd_get_section_contents
  56                (abfd, sect, new->contents, 0, new->contents_size));
  57
  58         int relsize = bfd_get_reloc_upper_bound(abfd, sect);
  59         new->relocs = (void *) malloc(relsize);
  60         new->num_relocs =
  61             bfd_canonicalize_reloc(abfd, sect, new->relocs, sympp);
  62         assert(new->num_relocs >= 0);
  63
  64         return new;
  65 }