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/* DWARF DWZ handling for GDB.
Copyright (C) 2003-2023 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef GDB_DWARF2_DWZ_H
#define GDB_DWARF2_DWZ_H
#include "gdb_bfd.h"
#include "dwarf2/index-cache.h"
#include "dwarf2/section.h"
struct dwarf2_per_bfd;
/* This represents a '.dwz' file. */
struct dwz_file
{
dwz_file (gdb_bfd_ref_ptr &&bfd)
: dwz_bfd (std::move (bfd))
{
}
const char *filename () const
{
return bfd_get_filename (this->dwz_bfd.get ());
}
/* A dwz file can only contain a few sections. */
struct dwarf2_section_info abbrev {};
struct dwarf2_section_info info {};
struct dwarf2_section_info str {};
struct dwarf2_section_info line {};
struct dwarf2_section_info macro {};
struct dwarf2_section_info gdb_index {};
struct dwarf2_section_info debug_names {};
/* The dwz's BFD. */
gdb_bfd_ref_ptr dwz_bfd;
/* If we loaded the index from an external file, this contains the
resources associated to the open file, memory mapping, etc. */
std::unique_ptr<index_cache_resource> index_cache_res;
/* Read a string at offset STR_OFFSET in the .debug_str section from
this dwz file. Throw an error if the offset is too large. If
the string consists of a single NUL byte, return NULL; otherwise
return a pointer to the string. */
const char *read_string (struct objfile *objfile, LONGEST str_offset);
};
/* Open the separate '.dwz' debug file, if needed. If there is no
.gnu_debugaltlink section in the file, then the result depends on
REQUIRE: if REQUIRE is true, then error; if REQUIRE is false,
return NULL. Always error if there is such a section but the file
cannot be found. */
extern dwz_file *dwarf2_get_dwz_file (dwarf2_per_bfd *per_bfd,
bool require = false);
#endif /* GDB_DWARF2_DWZ_H */
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