Branch data Line data Source code
1 : : /* Return one of the sources lines of a CU.
2 : : Copyright (C) 2005 Red Hat, Inc.
3 : : This file is part of elfutils.
4 : :
5 : : This file is free software; you can redistribute it and/or modify
6 : : it under the terms of either
7 : :
8 : : * the GNU Lesser General Public License as published by the Free
9 : : Software Foundation; either version 3 of the License, or (at
10 : : your option) any later version
11 : :
12 : : or
13 : :
14 : : * the GNU General Public License as published by the Free
15 : : Software Foundation; either version 2 of the License, or (at
16 : : your option) any later version
17 : :
18 : : or both in parallel, as here.
19 : :
20 : : elfutils is distributed in the hope that it will be useful, but
21 : : WITHOUT ANY WARRANTY; without even the implied warranty of
22 : : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
23 : : General Public License for more details.
24 : :
25 : : You should have received copies of the GNU General Public License and
26 : : the GNU Lesser General Public License along with this program. If
27 : : not, see <http://www.gnu.org/licenses/>. */
28 : :
29 : : #ifdef HAVE_CONFIG_H
30 : : # include <config.h>
31 : : #endif
32 : :
33 : : #include "libdwflP.h"
34 : :
35 : : Dwfl_Line *
36 : 297696 : dwfl_onesrcline (Dwarf_Die *cudie, size_t idx)
37 : : {
38 : 297696 : struct dwfl_cu *cu = (struct dwfl_cu *) cudie;
39 : :
40 [ + - ]: 297696 : if (cudie == NULL)
41 : : return NULL;
42 : :
43 [ - + ]: 297696 : if (cu->lines == NULL)
44 : : {
45 : 0 : Dwfl_Error error = __libdwfl_cu_getsrclines (cu);
46 [ # # ]: 0 : if (error != DWFL_E_NOERROR)
47 : : {
48 : 0 : __libdwfl_seterrno (error);
49 : 0 : return NULL;
50 : : }
51 : : }
52 : :
53 [ - + ]: 297696 : if (idx >= cu->die.cu->lines->nlines)
54 : : {
55 : 0 : __libdwfl_seterrno (DWFL_E (LIBDW, DWARF_E_INVALID_LINE_IDX));
56 : 0 : return NULL;
57 : : }
58 : :
59 : 297696 : return &cu->lines->idx[idx];
60 : : }
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