xref: /netbsd-src/external/gpl3/gdb.old/dist/gdb/dwarf2/dwz.c (revision d16b7486a53dcb8072b60ec6fcb4373a2d0c27b7)
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 }
41