Branch data Line data Source code
1 : : /* Get specific attribute of abbreviation.
2 : : Copyright (C) 2003, 2004, 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 <assert.h>
35 : : #include <dwarf.h>
36 : : #include "libdwP.h"
37 : :
38 : :
39 : : int
40 : 942090 : dwarf_getabbrevattr_data (Dwarf_Abbrev *abbrev, size_t idx,
41 : : unsigned int *namep, unsigned int *formp,
42 : : Dwarf_Sword *datap, Dwarf_Off *offsetp)
43 : : {
44 [ - + ]: 942090 : if (abbrev == NULL)
45 : : return -1;
46 : :
47 : 942090 : size_t cnt = 0;
48 : 942090 : const unsigned char *attrp = abbrev->attrp;
49 : 3750110 : const unsigned char *start_attrp;
50 : 3750110 : unsigned int name;
51 : 3750110 : unsigned int form;
52 : 3750110 : Dwarf_Word data;
53 : :
54 : 3750110 : do
55 : : {
56 : 3750110 : start_attrp = attrp;
57 : :
58 : : /* Attribute code and form are encoded as ULEB128 values.
59 : : Already checked when Dwarf_Abbrev was created, read unchecked. */
60 : 3750110 : get_uleb128_unchecked (name, attrp);
61 : 3750110 : get_uleb128_unchecked (form, attrp);
62 : :
63 [ + + ]: 3750110 : if (form == DW_FORM_implicit_const)
64 : 287158 : get_sleb128_unchecked (data, attrp);
65 : : else
66 : : data = 0;
67 : :
68 : : /* If both values are zero the index is out of range. */
69 [ + + ]: 3750110 : if (name == 0 && form == 0)
70 : : return -1;
71 : : }
72 [ + + ]: 3585876 : while (cnt++ < idx);
73 : :
74 : : /* Store the result if requested. */
75 [ + - ]: 777856 : if (namep != NULL)
76 : 777856 : *namep = name;
77 [ + - ]: 777856 : if (formp != NULL)
78 : 777856 : *formp = form;
79 [ + + ]: 777856 : if (datap != NULL)
80 : 777330 : *datap = data;
81 [ + - ]: 777856 : if (offsetp != NULL)
82 : 777856 : *offsetp = (start_attrp - abbrev->attrp) + abbrev->offset;
83 : :
84 : : return 0;
85 : : }
86 : : INTDEF(dwarf_getabbrevattr_data)
87 : :
88 : : int
89 : 526 : dwarf_getabbrevattr (Dwarf_Abbrev *abbrev, size_t idx, unsigned int *namep,
90 : : unsigned int *formp, Dwarf_Off *offsetp)
91 : : {
92 : 526 : return INTUSE(dwarf_getabbrevattr_data) (abbrev, idx, namep, formp,
93 : : NULL, offsetp);
94 : : }
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