1 /* Return file name containing definition of the given function.
2 Copyright (C) 2005, 2009 Red Hat, Inc.
3 This file is part of elfutils.
4 Written by Ulrich Drepper <drepper@redhat.com>, 2005.
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 const char *
dwarf_decl_file(Dwarf_Die * die)40 dwarf_decl_file (Dwarf_Die *die)
41 {
42 Dwarf_Attribute attr_mem;
43 Dwarf_Word idx = 0;
44
45 if (INTUSE(dwarf_formudata) (INTUSE(dwarf_attr_integrate)
46 (die, DW_AT_decl_file, &attr_mem),
47 &idx) != 0)
48 return NULL;
49
50 /* Zero means no source file information available. */
51 if (idx == 0)
52 {
53 __libdw_seterrno (DWARF_E_NO_ENTRY);
54 return NULL;
55 }
56
57 /* Get the array of source files for the CU. */
58 struct Dwarf_CU *cu = die->cu;
59 if (cu->lines == NULL)
60 {
61 Dwarf_Lines *lines;
62 size_t nlines;
63
64 /* Let the more generic function do the work. It'll create more
65 data but that will be needed in an real program anyway. */
66 (void) INTUSE(dwarf_getsrclines) (&CUDIE (cu), &lines, &nlines);
67 assert (cu->lines != NULL);
68 }
69
70 if (cu->lines == (void *) -1l)
71 {
72 /* If the file index is not zero, there must be file information
73 available. */
74 __libdw_seterrno (DWARF_E_INVALID_DWARF);
75 return NULL;
76 }
77
78 assert (cu->files != NULL && cu->files != (void *) -1l);
79
80 if (idx >= cu->files->nfiles)
81 {
82 __libdw_seterrno (DWARF_E_INVALID_DWARF);
83 return NULL;
84 }
85
86 return cu->files->info[idx].name;
87 }
88 OLD_VERSION (dwarf_decl_file, ELFUTILS_0.122)
89 NEW_VERSION (dwarf_decl_file, ELFUTILS_0.143)
90