1 /* Return source file information of CU.
2 Copyright (C) 2004 Red Hat, Inc.
3 Written by Ulrich Drepper <drepper@redhat.com>, 2004.
4
5 This program is Open Source software; you can redistribute it and/or
6 modify it under the terms of the Open Software License version 1.0 as
7 published by the Open Source Initiative.
8
9 You should have received a copy of the Open Software License along
10 with this program; if not, you may obtain a copy of the Open Software
11 License version 1.0 from http://www.opensource.org/licenses/osl.php or
12 by writing the Open Source Initiative c/o Lawrence Rosen, Esq.,
13 3001 King Ranch Road, Ukiah, CA 95482. */
14
15 #ifdef HAVE_CONFIG_H
16 # include <config.h>
17 #endif
18
19 #include <assert.h>
20 #include <dwarf.h>
21 #include "libdwP.h"
22
23
24 int
dwarf_getsrcfiles(Dwarf_Die * cudie,Dwarf_Files ** files,size_t * nfiles)25 dwarf_getsrcfiles (Dwarf_Die *cudie, Dwarf_Files **files, size_t *nfiles)
26 {
27 if (unlikely (cudie == NULL || dwarf_tag (cudie) != DW_TAG_compile_unit))
28 return -1;
29
30 int res = -1;
31
32 /* Get the information if it is not already known. */
33 struct Dwarf_CU *const cu = cudie->cu;
34 if (cu->lines == NULL)
35 {
36 Dwarf_Lines *lines;
37 size_t nlines;
38
39 /* Let the more generic function do the work. It'll create more
40 data but that will be needed in an real program anyway. */
41 res = dwarf_getsrclines (cudie, &lines, &nlines);
42 }
43 else if (cu->files != (void *) -1l)
44 /* We already have the information. */
45 res = 0;
46
47 if (likely (res == 0))
48 {
49 assert (cu->files != NULL && cu->files != (void *) -1l);
50 *files = cu->files;
51 if (nfiles != NULL)
52 *nfiles = cu->files->nfiles;
53 }
54
55 // XXX Eventually: unlocking here.
56
57 return res;
58 }
59