3 Copyright (C) 1994-2020 Free Software Foundation, Inc.
5 Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology,
6 Inc. with support from Florida State University (under contract
7 with the Ada Joint Program Office), and Silicon Graphics, Inc.
8 Initial contribution by Brent Benson, Harris Computer Systems, Inc.,
9 based on Fred Fish's (Cygnus Support) implementation of DWARF 1
12 This file is part of GDB.
14 This program is free software; you can redistribute it and/or modify
15 it under the terms of the GNU General Public License as published by
16 the Free Software Foundation; either version 3 of the License, or
17 (at your option) any later version.
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 GNU General Public License for more details.
24 You should have received a copy of the GNU General Public License
25 along with this program. If not, see <http://www.gnu.org/licenses/>. */
28 #include "dwarf2/attribute.h"
30 /* See attribute.h. */
33 attribute::value_as_address () const
37 if (form
!= DW_FORM_addr
&& form
!= DW_FORM_addrx
38 && form
!= DW_FORM_GNU_addr_index
)
40 /* Aside from a few clearly defined exceptions, attributes that
41 contain an address must always be in DW_FORM_addr form.
42 Unfortunately, some compilers happen to be violating this
43 requirement by encoding addresses using other forms, such
44 as DW_FORM_data4 for example. For those broken compilers,
45 we try to do our best, without any guarantee of success,
46 to interpret the address correctly. It would also be nice
47 to generate a complaint, but that would require us to maintain
48 a list of legitimate cases where a non-address form is allowed,
49 as well as update callers to pass in at least the CU's DWARF
50 version. This is more overhead than what we're willing to
51 expand for a pretty rare case. */
52 addr
= DW_UNSND (this);
55 addr
= DW_ADDR (this);
60 /* See attribute.h. */
63 attribute::form_is_block () const
65 return (form
== DW_FORM_block1
66 || form
== DW_FORM_block2
67 || form
== DW_FORM_block4
68 || form
== DW_FORM_block
69 || form
== DW_FORM_exprloc
);
72 /* See attribute.h. */
75 attribute::form_is_section_offset () const
77 return (form
== DW_FORM_data4
78 || form
== DW_FORM_data8
79 || form
== DW_FORM_sec_offset
);
82 /* See attribute.h. */
85 attribute::form_is_constant () const
95 case DW_FORM_implicit_const
:
102 /* DW_ADDR is always stored already as sect_offset; despite for the forms
103 besides DW_FORM_ref_addr it is stored as cu_offset in the DWARF file. */
106 attribute::form_is_ref () const
110 case DW_FORM_ref_addr
:
115 case DW_FORM_ref_udata
:
116 case DW_FORM_GNU_ref_alt
:
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