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/* Low-level checking of .debug_abbrev.
Copyright (C) 2009, 2010, 2011 Red Hat, Inc.
This file is part of elfutils.
This file 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.
elfutils 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 DWARFLINT_CHECK_DEBUG_ABBREV_HH
#define DWARFLINT_CHECK_DEBUG_ABBREV_HH
#include "checks.hh"
#include "sections_i.hh"
#include "check_debug_info_i.hh"
#include "dwarf_version_i.hh"
namespace locus_simple_fmt
{
char const *abbr_offset_n ();
}
typedef fixed_locus<sec_abbrev,
locus_simple_fmt::abbr_offset_n,
locus_simple_fmt::hex> abbrev_locus;
class abbrev_attrib_locus
: public locus
{
uint64_t _m_abbr_offset;
uint64_t _m_attr_offset;
int _m_name;
public:
explicit abbrev_attrib_locus (uint64_t abbr_offset = -1,
uint64_t attr_offset = -1,
int name = -1);
abbrev_attrib_locus (abbrev_attrib_locus const ©);
abbrev_attrib_locus non_symbolic ();
void set_name (int name);
std::string format (bool brief = false) const;
std::string name () const;
};
struct abbrev_attrib
{
abbrev_attrib_locus where;
uint16_t name;
uint8_t form;
abbrev_attrib ()
: where ()
, name (0)
, form (0)
{}
};
struct abbrev
{
abbrev_locus where;
uint64_t code;
/* Attributes. */
abbrev_attrib *attribs;
size_t size;
size_t alloc;
/* While ULEB128 can hold numbers > 32bit, these are not legal
values of many enum types. So just use as large type as
necessary to cover valid values. */
uint16_t tag;
bool has_children;
/* Whether some DIE uses this abbrev. */
bool used;
explicit abbrev (abbrev_locus const &loc)
: where (loc)
, code (0)
, attribs (0)
, size (0)
, alloc (0)
, tag (0)
, has_children (false)
, used (false)
{}
};
struct abbrev_table
{
struct abbrev_table *next;
struct abbrev *abbr;
uint64_t offset;
size_t size;
size_t alloc;
bool used; /* There are CUs using this table. */
abbrev *find_abbrev (uint64_t abbrev_code) const;
abbrev_table ()
: next (NULL)
, abbr (NULL)
, offset (0)
, size (0)
, alloc (0)
, used (false)
{}
};
class check_debug_abbrev
: public check<check_debug_abbrev>
{
section<sec_abbrev> *_m_sec_abbr;
read_cu_headers *_m_cu_headers;
public:
static checkdescriptor const *descriptor ();
// offset -> abbreviations
typedef std::map< ::Dwarf_Off, abbrev_table> abbrev_map;
abbrev_map const abbrevs;
check_debug_abbrev (checkstack &stack, dwarflint &lint);
static form const *check_form (dwarf_version const *ver,
attribute const *attr,
int form_name,
locus const &loc,
bool indirect);
~check_debug_abbrev ();
};
#endif//DWARFLINT_CHECK_DEBUG_ABBREV_HH
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