1/* Test program for dwfl_module_return_value_location.
2   Copyright (C) 2005 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 <assert.h>
20#include <inttypes.h>
21#include ELFUTILS_HEADER(dwfl)
22#include <dwarf.h>
23#include <argp.h>
24#include <stdio.h>
25#include <stdio_ext.h>
26#include <locale.h>
27#include <stdlib.h>
28#include <error.h>
29#include <string.h>
30#include <fnmatch.h>
31
32
33struct args
34{
35  Dwfl *dwfl;
36  Dwarf_Die *cu;
37  Dwarf_Addr dwbias;
38  char **argv;
39};
40
41static int
42handle_function (Dwarf_Die *funcdie, void *arg)
43{
44  struct args *a = arg;
45
46  const char *name = dwarf_diename (funcdie);
47  char **argv = a->argv;
48  if (argv[0] != NULL)
49    {
50      bool match;
51      do
52	match = fnmatch (*argv, name, 0) == 0;
53      while (!match && *++argv);
54      if (!match)
55	return 0;
56    }
57
58  printf ("(%s) %s: ", dwfl_module_info (dwfl_cumodule (a->cu), NULL,
59					 NULL, NULL,
60					 NULL, NULL,
61					 NULL, NULL), name);
62
63  const Dwarf_Op *locops;
64  int nlocops = dwfl_module_return_value_location (dwfl_cumodule (a->cu),
65						   funcdie, &locops);
66  if (nlocops < 0)
67    error (EXIT_FAILURE, 0, "dwfl_module_return_value_location: %s",
68	   dwfl_errmsg (-1));
69  else if (nlocops == 0)
70    puts ("returns no value");
71  else
72    {
73      printf ("return value location:");
74      for (int i = 0; i < nlocops; ++i)
75	printf (" {%#x, %#" PRIx64 "}", locops[i].atom, locops[i].number);
76      puts ("");
77    }
78
79  return 0;
80}
81
82
83int
84main (int argc, char *argv[])
85{
86  int remaining;
87
88  /* Set locale.  */
89  (void) setlocale (LC_ALL, "");
90
91  struct args a = { .dwfl = NULL, .cu = NULL };
92
93  (void) argp_parse (dwfl_standard_argp (), argc, argv, 0, &remaining,
94		     &a.dwfl);
95  assert (a.dwfl != NULL);
96  a.argv = &argv[remaining];
97
98  int result = 0;
99
100  while ((a.cu = dwfl_nextcu (a.dwfl, a.cu, &a.dwbias)) != NULL)
101    dwarf_getfuncs (a.cu, &handle_function, &a, 0);
102
103  dwfl_end (a.dwfl);
104
105  return result;
106}
107