cd6c91b4f8
This changes most of the attribute-related functions to be methods. (attr_form_is_block changed in a subsequent patch.) gdb/ChangeLog 2020-02-08 Tom Tromey <tom@tromey.com> * dwarf2read.c (dwarf2_find_base_address, ) (read_call_site_scope, rust_containing_type) (dwarf2_get_pc_bounds, dwarf2_record_block_ranges) (handle_data_member_location, dwarf2_add_member_fn) (get_alignment, read_structure_type, process_structure_scope) (mark_common_block_symbol_computed, read_common_block) (read_tag_string_type, attr_to_dynamic_prop, read_subrange_type) (partial_die_info::read, read_attribute_value, new_symbol) (lookup_die_type, dwarf2_get_ref_die_offset) (dwarf2_get_attr_constant_value, follow_die_ref_or_sig) (dwarf2_fetch_die_loc_sect_off, get_DW_AT_signature_type) (dwarf2_symbol_mark_computed): Update. * dwarf2/attribute.h (struct attribute) <value_as_address, form_is_section_offset, form_is_constant, form_is_ref>: Declare methods. (value_as_address, attr_form_is_section_offset) (attr_form_is_constant, attr_form_is_ref): Don't declare. * dwarf2/attribute.c (attribute::value_as_address) (attribute::form_is_section_offset, attribute::form_is_constant) (attribute::form_is_ref): Now methods. Change-Id: I320dad13002c59b848dc86c39d5d7111c8a15bdc
123 lines
3.3 KiB
C
123 lines
3.3 KiB
C
/* DWARF attributes
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Copyright (C) 1994-2020 Free Software Foundation, Inc.
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Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology,
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Inc. with support from Florida State University (under contract
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with the Ada Joint Program Office), and Silicon Graphics, Inc.
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Initial contribution by Brent Benson, Harris Computer Systems, Inc.,
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based on Fred Fish's (Cygnus Support) implementation of DWARF 1
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support.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "dwarf2/attribute.h"
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/* See attribute.h. */
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CORE_ADDR
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attribute::value_as_address () const
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{
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CORE_ADDR addr;
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if (form != DW_FORM_addr && form != DW_FORM_addrx
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&& form != DW_FORM_GNU_addr_index)
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{
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/* Aside from a few clearly defined exceptions, attributes that
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contain an address must always be in DW_FORM_addr form.
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Unfortunately, some compilers happen to be violating this
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requirement by encoding addresses using other forms, such
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as DW_FORM_data4 for example. For those broken compilers,
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we try to do our best, without any guarantee of success,
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to interpret the address correctly. It would also be nice
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to generate a complaint, but that would require us to maintain
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a list of legitimate cases where a non-address form is allowed,
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as well as update callers to pass in at least the CU's DWARF
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version. This is more overhead than what we're willing to
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expand for a pretty rare case. */
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addr = DW_UNSND (this);
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}
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else
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addr = DW_ADDR (this);
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return addr;
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}
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/* See attribute.h. */
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int
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attr_form_is_block (const struct attribute *attr)
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{
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return (attr == NULL ? 0 :
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attr->form == DW_FORM_block1
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|| attr->form == DW_FORM_block2
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|| attr->form == DW_FORM_block4
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|| attr->form == DW_FORM_block
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|| attr->form == DW_FORM_exprloc);
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}
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/* See attribute.h. */
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bool
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attribute::form_is_section_offset () const
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{
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return (form == DW_FORM_data4
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|| form == DW_FORM_data8
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|| form == DW_FORM_sec_offset);
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}
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/* See attribute.h. */
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bool
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attribute::form_is_constant () const
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{
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switch (form)
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{
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case DW_FORM_sdata:
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case DW_FORM_udata:
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case DW_FORM_data1:
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case DW_FORM_data2:
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case DW_FORM_data4:
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case DW_FORM_data8:
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case DW_FORM_implicit_const:
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return true;
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default:
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return false;
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}
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}
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/* DW_ADDR is always stored already as sect_offset; despite for the forms
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besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */
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bool
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attribute::form_is_ref () const
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{
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switch (form)
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{
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case DW_FORM_ref_addr:
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case DW_FORM_ref1:
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case DW_FORM_ref2:
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case DW_FORM_ref4:
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case DW_FORM_ref8:
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case DW_FORM_ref_udata:
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case DW_FORM_GNU_ref_alt:
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return true;
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default:
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return false;
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}
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}
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