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#ifndef GDB_DWARF2_DWZ_H
21#define GDB_DWARF2_DWZ_H
22
23#include "gdb_bfd.h"
24#include "dwarf2/index-cache.h"
25#include "dwarf2/section.h"
26
27/* This represents a '.dwz' file.  */
28
29struct dwz_file
30{
31  dwz_file (gdb_bfd_ref_ptr &&bfd)
32    : dwz_bfd (std::move (bfd))
33  {
34  }
35
36  const char *filename () const
37  {
38    return bfd_get_filename (this->dwz_bfd.get ());
39  }
40
41  /* A dwz file can only contain a few sections.  */
42  struct dwarf2_section_info abbrev {};
43  struct dwarf2_section_info info {};
44  struct dwarf2_section_info str {};
45  struct dwarf2_section_info line {};
46  struct dwarf2_section_info macro {};
47  struct dwarf2_section_info gdb_index {};
48  struct dwarf2_section_info debug_names {};
49
50  /* The dwz's BFD.  */
51  gdb_bfd_ref_ptr dwz_bfd;
52
53  /* If we loaded the index from an external file, this contains the
54     resources associated to the open file, memory mapping, etc.  */
55  std::unique_ptr<index_cache_resource> index_cache_res;
56
57  /* Read a string at offset STR_OFFSET in the .debug_str section from
58     this dwz file.  Throw an error if the offset is too large.  If
59     the string consists of a single NUL byte, return NULL; otherwise
60     return a pointer to the string.  */
61
62  const char *read_string (struct objfile *objfile, LONGEST str_offset);
63};
64
65#endif /* GDB_DWARF2_DWZ_H */
66