gdb/dwarf2/dwz.c

   1 /* DWARF DWZ handling for GDB.
   2
   3    Copyright (C) 2003-2020 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #include "defs.h"
  21 #include "dwarf2/dwz.h"
  22
  23 const char *
  24 dwz_file::read_string (struct objfile *objfile, LONGEST str_offset)
  25 {
  26   str.read (objfile);
  27
  28   if (str.buffer == NULL)
  29     error (_("DW_FORM_GNU_strp_alt used without .debug_str "
  30              "section [in module %s]"),
  31            bfd_get_filename (dwz_bfd.get ()));
  32   if (str_offset >= str.size)
  33     error (_("DW_FORM_GNU_strp_alt pointing outside of "
  34              ".debug_str section [in module %s]"),
  35            bfd_get_filename (dwz_bfd.get ()));
  36   gdb_assert (HOST_CHAR_BIT == 8);
  37   if (str.buffer[str_offset] == '\0')
  38     return NULL;
  39   return (const char *) (str.buffer + str_offset);
  40 }