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/* Pedantic checking of DWARF files
Copyright (C) 2010 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/>. */
#include "dwarf_version-imp.hh"
#include "dwarf_2.hh"
#include "dwarf_3.hh"
#include "../libdw/dwarf.h"
#include <cassert>
namespace
{
struct dwarf_3_attributes
: public attribute_table
{
dwarf_3_attributes ()
{
add (location_attribute (DW_AT_location));
add (dynval_attribute (DW_AT_byte_size));
add (dynval_attribute (DW_AT_bit_offset));
add (dynval_attribute (DW_AT_bit_size));
add (location_attribute (DW_AT_string_length));
add (dynval_attribute (DW_AT_lower_bound));
add (location_attribute (DW_AT_return_addr));
// Note, DWARF 3 claims only a const class for DW_AT_bit_stride,
// but from 2.19 it's clear that this is an omission.
add (dynval_attribute (DW_AT_bit_stride));
add (dynval_attribute (DW_AT_upper_bound));
add (dynval_attribute (DW_AT_count));
add (attribute (DW_AT_data_member_location,
dw_class_set (cl_exprloc, cl_constant, cl_loclistptr)));
add (location_attribute (DW_AT_frame_base));
add (location_attribute (DW_AT_segment));
add (location_attribute (DW_AT_static_link));
add (location_attribute (DW_AT_use_location));
add (location_attribute (DW_AT_vtable_elem_location));
add (dynval_attribute (DW_AT_allocated));
add (dynval_attribute (DW_AT_associated));
add (attribute (DW_AT_data_location, cl_exprloc));
add (dynval_attribute (DW_AT_byte_stride));
add (addr_attribute (DW_AT_entry_pc));
add (flag_attribute (DW_AT_use_UTF8));
add (ref_attribute (DW_AT_extension));
add (attribute (DW_AT_ranges, cl_rangelistptr));
add (attribute (DW_AT_trampoline,
dw_class_set (cl_address, cl_flag,
cl_reference, cl_string)));
add (const_attribute (DW_AT_call_column));
add (const_attribute (DW_AT_call_file));
add (const_attribute (DW_AT_call_line));
add (string_attribute (DW_AT_description));
add (const_attribute (DW_AT_binary_scale));
add (const_attribute (DW_AT_decimal_scale));
add (ref_attribute (DW_AT_small));
add (const_attribute (DW_AT_decimal_sign));
add (const_attribute (DW_AT_digit_count));
add (string_attribute (DW_AT_picture_string));
add (flag_attribute (DW_AT_mutable));
add (flag_attribute (DW_AT_threads_scaled));
add (flag_attribute (DW_AT_explicit));
add (ref_attribute (DW_AT_object_pointer));
add (const_attribute (DW_AT_endianity));
add (flag_attribute (DW_AT_elemental));
add (flag_attribute (DW_AT_pure));
add (flag_attribute (DW_AT_recursive));
}
};
struct dwarf_3_forms
: public form_table
{
dwarf_3_forms ()
{
add (offset_form (DW_FORM_ref_addr, cl_reference));
// In DWARF 2 we made all the const forms into various cl_*ptr,
// since that's how the standard was worded: it allowed
// DW_AT_location to have any constant form. In DWARF 3, only
// data4 and data8 are like this. In addition, these two can
// also be cl_rangelistptr.
typedef preset_form<sc_value,
cl_constant, cl_lineptr, cl_loclistptr,
cl_macptr, cl_rangelistptr> dw3_data_form;
add (const_form (DW_FORM_data1, fw_1));
add (const_form (DW_FORM_data2, fw_2));
add (dw3_data_form (DW_FORM_data4, fw_4));
add (dw3_data_form (DW_FORM_data8, fw_8));
add (const_form (DW_FORM_sdata, fw_sleb));
add (const_form (DW_FORM_udata, fw_uleb));
}
};
struct dwarf_3_ext_t
: public std_dwarf
{
dwarf_3_ext_t ()
: std_dwarf (dwarf_3_attributes (), dwarf_3_forms ())
{}
dw_class
ambiguous_class (__attribute__ ((unused)) form const *form,
attribute const *attribute,
dw_class_set const &candidates) const
{
assert (attribute->name () == DW_AT_data_member_location);
assert (candidates == dw_class_set (cl_constant, cl_loclistptr));
return cl_loclistptr;
}
};
}
dwarf_version const *
dwarf_3_ext ()
{
static dwarf_3_ext_t dw;
return &dw;
}
dwarf_version const *
dwarf_3 ()
{
static dwarf_version const *dw =
dwarf_version::extend (dwarf_2 (), dwarf_3_ext ());
return dw;
}
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