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 : #include "libdwflP.h"
30 :
31 : Dwfl_Line *
32 101164 : dwfl_onesrcline (Dwarf_Die *cudie, size_t idx)
33 : {
34 101164 : struct dwfl_cu *cu = (struct dwfl_cu *) cudie;
35 :
36 101164 : if (cudie == NULL)
37 : return NULL;
38 :
39 101164 : if (cu->lines == NULL)
40 : {
41 0 : Dwfl_Error error = __libdwfl_cu_getsrclines (cu);
42 0 : if (error != DWFL_E_NOERROR)
43 : {
44 0 : __libdwfl_seterrno (error);
45 0 : return NULL;
46 : }
47 : }
48 :
49 101164 : if (idx >= cu->die.cu->lines->nlines)
50 : {
51 0 : __libdwfl_seterrno (DWFL_E (LIBDW, DWARF_E_INVALID_LINE_IDX));
52 0 : return NULL;
53 : }
54 :
55 101164 : return &cu->lines->idx[idx];
56 : }
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