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/* Pedantic checking of DWARF files
Copyright (C) 2010, 2011 Red Hat, Inc.
This file is part of Red Hat elfutils.
Red Hat elfutils 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; version 2 of the License.
Red Hat 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 Red Hat elfutils; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA.
Red Hat elfutils is an included package of the Open Invention Network.
An included package of the Open Invention Network is a package for which
Open Invention Network licensees cross-license their patents. No patent
license is granted, either expressly or impliedly, by designation as an
included package. Should you wish to participate in the Open Invention
Network licensing program, please visit www.openinventionnetwork.com
<http://www.openinventionnetwork.com>. */
#include "dwarf_version-imp.hh"
#include "dwarf_2.hh"
#include "../libdw/dwarf.h"
namespace
{
typedef preset_attribute<cl_reference, cl_constant> const_or_ref_attribute;
struct dwarf_2_attributes
: public attribute_table
{
dwarf_2_attributes ()
{
// Note about location descriptions in DWARF 2 (and 3). In
// DWARF 2, location expressions can have classes of cl_constant
// or cl_block. But we need to tell those block expressions
// from any old block attribute to validate the expression, and
// those constants from any old number to validate the
// reference. So we retrofit all the DW_FORM_block* forms and
// appropriate attributes with cl_exprloc form DWARF 4 and
// cl_loclistptr (even though in DWARF 4 it's actually only
// DW_FORM_exprloc that has this class).
//
// Similarly with cl_lineptr and cl_macptr. cl_rangelistptr
// wasn't introduced until DWARF 3.
add (ref_attribute (DW_AT_sibling));
add (location_attribute (DW_AT_location));
add (string_attribute (DW_AT_name));
add (const_attribute (DW_AT_ordering));
add (const_attribute (DW_AT_byte_size));
add (const_attribute (DW_AT_bit_offset));
add (const_attribute (DW_AT_bit_size));
add (attribute (DW_AT_stmt_list, cl_lineptr));
add (addr_attribute (DW_AT_low_pc));
add (addr_attribute (DW_AT_high_pc));
add (const_attribute (DW_AT_language));
add (ref_attribute (DW_AT_discr));
add (const_attribute (DW_AT_discr_value));
add (const_attribute (DW_AT_visibility));
add (ref_attribute (DW_AT_import));
add (location_attribute (DW_AT_string_length));
add (ref_attribute (DW_AT_common_reference));
add (string_attribute (DW_AT_comp_dir));
add (attribute (DW_AT_const_value,
dw_class_set (cl_string, cl_constant, cl_block)));
add (ref_attribute (DW_AT_containing_type));
add (ref_attribute (DW_AT_default_value));
add (const_attribute (DW_AT_inline));
add (flag_attribute (DW_AT_is_optional));
add (const_or_ref_attribute (DW_AT_lower_bound));
add (string_attribute (DW_AT_producer));
add (flag_attribute (DW_AT_prototyped));
add (location_attribute (DW_AT_return_addr));
add (const_attribute (DW_AT_start_scope));
add (const_attribute (DW_AT_bit_stride));
add (const_or_ref_attribute (DW_AT_upper_bound));
add (ref_attribute (DW_AT_abstract_origin));
add (const_attribute (DW_AT_accessibility));
add (const_attribute (DW_AT_address_class));
add (flag_attribute (DW_AT_artificial));
add (ref_attribute (DW_AT_base_types));
add (const_attribute (DW_AT_calling_convention));
add (const_or_ref_attribute (DW_AT_count));
add (static_location_attribute (DW_AT_data_member_location));
add (const_attribute (DW_AT_decl_column));
add (const_attribute (DW_AT_decl_file));
add (const_attribute (DW_AT_decl_line));
add (flag_attribute (DW_AT_declaration));
add (block_attribute (DW_AT_discr_list));
add (const_attribute (DW_AT_encoding));
add (flag_attribute (DW_AT_external));
add (location_attribute (DW_AT_frame_base));
add (ref_attribute (DW_AT_friend));
add (const_attribute (DW_AT_identifier_case));
add (attribute (DW_AT_macro_info, cl_macptr));
add (block_attribute (DW_AT_namelist_item));
add (ref_attribute (DW_AT_priority));
add (location_attribute (DW_AT_segment));
add (ref_attribute (DW_AT_specification));
add (location_attribute (DW_AT_static_link));
add (ref_attribute (DW_AT_type));
add (location_attribute (DW_AT_use_location));
add (flag_attribute (DW_AT_variable_parameter));
add (const_attribute (DW_AT_virtuality));
add (static_location_attribute (DW_AT_vtable_elem_location));
}
};
struct exprloc_form
: public preset_form<sc_block, cl_exprloc, cl_block>
{
exprloc_form (int a_name, form_width_t a_width)
: preset_form<sc_block, cl_exprloc, cl_block> (a_name, a_width)
{}
};
struct dwarf_2_forms
: public form_table
{
dwarf_2_forms ()
{
add (exprloc_form (DW_FORM_block, fw_uleb));
add (exprloc_form (DW_FORM_block1, fw_1));
add (exprloc_form (DW_FORM_block2, fw_2));
add (exprloc_form (DW_FORM_block4, fw_4));
// These constant forms can in theory, in legal DWARF 2,
// represent various pointers.
typedef preset_form<sc_value,
cl_constant, cl_lineptr, cl_loclistptr,
cl_macptr> dw2_data_form;
add (dw2_data_form (DW_FORM_data1, fw_1));
add (dw2_data_form (DW_FORM_data2, fw_2));
add (dw2_data_form (DW_FORM_data4, fw_4));
add (dw2_data_form (DW_FORM_data8, fw_8));
add (dw2_data_form (DW_FORM_sdata, fw_sleb));
add (dw2_data_form (DW_FORM_udata, fw_uleb));
add (flag_form (DW_FORM_flag, fw_1));
add (ref_form (DW_FORM_ref1, fw_1));
add (ref_form (DW_FORM_ref2, fw_2));
add (ref_form (DW_FORM_ref4, fw_4));
add (ref_form (DW_FORM_ref8, fw_8, fb_64));
add (ref_form (DW_FORM_ref_udata, fw_uleb));
add (string_form (DW_FORM_string));
add (offset_form (DW_FORM_strp, cl_string));
add (address_form (DW_FORM_addr, cl_address));
add (address_form (DW_FORM_ref_addr, cl_reference));
add (form (DW_FORM_indirect, cl_indirect, fw_uleb, sc_value));
}
};
struct dwarf_2_t
: public std_dwarf
{
dwarf_2_t ()
: std_dwarf (dwarf_2_attributes (), dwarf_2_forms ())
{}
};
}
dwarf_version const *
dwarf_2 ()
{
static dwarf_2_t dw;
return &dw;
}
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