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
32void
33print_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
54int
55main (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