1 /* Test program for dwarf_ranges
2 Copyright (C) 2015, 2018 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 the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
9
10 elfutils is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17
18 #include <config.h>
19 #include ELFUTILS_HEADER(dw)
20 #include <dwarf.h>
21 #include <sys/types.h>
22 #include <sys/stat.h>
23 #include <fcntl.h>
24 #include <stdio.h>
25 #include <stdint.h>
26 #include <stdlib.h>
27 #include <assert.h>
28 #include <inttypes.h>
29
30 static void
ranges_die(Dwarf_Die * die)31 ranges_die (Dwarf_Die *die)
32 {
33 Dwarf_Addr base, start, end;
34 int ranges = dwarf_ranges (die, 0, &base, &start, &end);
35 if (ranges < 0)
36 puts (dwarf_errmsg (-1));
37 else if (ranges > 0)
38 {
39 printf ("die: %s (%x)\n", dwarf_diename (die) ?: "<unknown>",
40 dwarf_tag (die));
41 for (ptrdiff_t off = 0;
42 (off = dwarf_ranges (die, off, &base, &start, &end)); )
43 if (off == -1)
44 {
45 puts (dwarf_errmsg (-1));
46 break;
47 }
48 else
49 printf (" %"PRIx64"..%"PRIx64"\n", start, end);
50 printf ("\n");
51 }
52 }
53
54 static void
walk_tree(Dwarf_Die * dwarf_die)55 walk_tree (Dwarf_Die *dwarf_die)
56 {
57 Dwarf_Die die = *dwarf_die;
58 do
59 {
60 Dwarf_Die child;
61 ranges_die (&die);
62 if (dwarf_child (&die, &child) == 0)
63 walk_tree (&child);
64 }
65 while (dwarf_siblingof (&die, &die) == 0);
66 }
67
68 int
main(int argc,char * argv[])69 main (int argc, char *argv[])
70 {
71 assert (argc >= 2);
72 const char *name = argv[1];
73
74 int fd = open (name, O_RDONLY);
75 Dwarf *dbg = dwarf_begin (fd, DWARF_C_READ);
76
77 Dwarf_CU *cu = NULL;
78 Dwarf_Die cudie, subdie;
79 uint8_t unit_type;
80 while (dwarf_get_units (dbg, cu, &cu, NULL,
81 &unit_type, &cudie, &subdie) == 0)
82 {
83 Dwarf_Die die = (unit_type == DW_UT_skeleton
84 ? subdie : cudie);
85 walk_tree (&die);
86 }
87 dwarf_end (dbg);
88
89 return 0;
90 }
91