/src/elfutils/libdw/dwarf_hasattr.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* Check whether given DIE has specific attribute. |
2 | | Copyright (C) 2003, 2005, 2014, 2017 Red Hat, Inc. |
3 | | This file is part of elfutils. |
4 | | Written by Ulrich Drepper <drepper@redhat.com>, 2003. |
5 | | |
6 | | This file is free software; you can redistribute it and/or modify |
7 | | it under the terms of either |
8 | | |
9 | | * the GNU Lesser General Public License as published by the Free |
10 | | Software Foundation; either version 3 of the License, or (at |
11 | | your option) any later version |
12 | | |
13 | | or |
14 | | |
15 | | * the GNU General Public License as published by the Free |
16 | | Software Foundation; either version 2 of the License, or (at |
17 | | your option) any later version |
18 | | |
19 | | or both in parallel, as here. |
20 | | |
21 | | elfutils is distributed in the hope that it will be useful, but |
22 | | WITHOUT ANY WARRANTY; without even the implied warranty of |
23 | | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
24 | | General Public License for more details. |
25 | | |
26 | | You should have received copies of the GNU General Public License and |
27 | | the GNU Lesser General Public License along with this program. If |
28 | | not, see <http://www.gnu.org/licenses/>. */ |
29 | | |
30 | | #ifdef HAVE_CONFIG_H |
31 | | # include <config.h> |
32 | | #endif |
33 | | |
34 | | #include <dwarf.h> |
35 | | #include "libdwP.h" |
36 | | |
37 | | |
38 | | int |
39 | | dwarf_hasattr (Dwarf_Die *die, unsigned int search_name) |
40 | 0 | { |
41 | 0 | if (die == NULL) |
42 | 0 | return 0; |
43 | | |
44 | | /* Find the abbreviation entry. */ |
45 | 0 | Dwarf_Abbrev *abbrevp = __libdw_dieabbrev (die, NULL); |
46 | 0 | if (unlikely (abbrevp == DWARF_END_ABBREV)) |
47 | 0 | { |
48 | 0 | __libdw_seterrno (DWARF_E_INVALID_DWARF); |
49 | 0 | return 0; |
50 | 0 | } |
51 | | |
52 | | /* Search the name attribute. Dwarf_Abbrev was checked when created, |
53 | | so we can read unchecked here. */ |
54 | 0 | const unsigned char *attrp = abbrevp->attrp; |
55 | 0 | while (1) |
56 | 0 | { |
57 | | /* Get attribute name and form. */ |
58 | 0 | unsigned int attr_name; |
59 | 0 | get_uleb128_unchecked (attr_name, attrp); |
60 | 0 | unsigned int attr_form; |
61 | 0 | get_uleb128_unchecked (attr_form, attrp); |
62 | | |
63 | | /* We can stop if we found the end of the attribute list. */ |
64 | 0 | if (attr_name == 0 && attr_form == 0) |
65 | 0 | return 0; |
66 | | |
67 | 0 | if (attr_name == search_name) |
68 | 0 | return 1; |
69 | | |
70 | 0 | if (attr_form == DW_FORM_implicit_const) |
71 | 0 | { |
72 | 0 | int64_t attr_value __attribute__ ((unused)); |
73 | 0 | get_sleb128_unchecked (attr_value, attrp); |
74 | 0 | } |
75 | 0 | } |
76 | 0 | } |
77 | | INTDEF (dwarf_hasattr) |