1 /* Test program for dwarf_aggregate_size. Prints size of top-level vars.
2 Copyright (C) 2014 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 #ifdef HAVE_CONFIG_H
19 # include <config.h>
20 #endif
21
22 #include <assert.h>
23 #include <argp.h>
24 #include <inttypes.h>
25 #include <fcntl.h>
26 #include ELFUTILS_HEADER(dw)
27 #include ELFUTILS_HEADER(dwfl)
28 #include <stdio.h>
29 #include <unistd.h>
30 #include <dwarf.h>
31
32 void
print_var_type_size(Dwarf_Die * var)33 print_var_type_size (Dwarf_Die *var)
34 {
35 Dwarf_Attribute attr_mem;
36 Dwarf_Die type_mem;
37 Dwarf_Die *type;
38 const char *name = dwarf_diename (var);
39
40 type = dwarf_formref_die (dwarf_attr (var, DW_AT_type, &attr_mem),
41 &type_mem);
42 if (type != NULL)
43 {
44 Dwarf_Word size;
45 if (dwarf_aggregate_size (type, &size) < 0)
46 printf ("%s no size: %s\n", name, dwarf_errmsg (-1));
47 else
48 printf ("%s size %" PRIu64 "\n", name, size);
49 }
50 else
51 printf ("%s has no type.\n", name);
52 }
53
54 int
main(int argc,char * argv[])55 main (int argc, char *argv[])
56 {
57
58 int remaining;
59 Dwfl *dwfl;
60 (void) argp_parse (dwfl_standard_argp (), argc, argv, 0, &remaining,
61 &dwfl);
62 assert (dwfl != NULL);
63
64 Dwarf_Die *cu = NULL;
65 Dwarf_Addr dwbias;
66 while ((cu = dwfl_nextcu (dwfl, cu, &dwbias)) != NULL)
67 {
68 Dwarf_Die die_mem;
69 Dwarf_Die *die = &die_mem;
70 dwarf_child (cu, &die_mem);
71
72 while (1)
73 {
74 if (dwarf_tag (die) == DW_TAG_variable)
75 print_var_type_size (die);
76
77 if (dwarf_siblingof (die, &die_mem) != 0)
78 break;
79 }
80 }
81
82 dwfl_end (dwfl);
83 }
84