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1 /* Copyright (C) 2012 Red Hat, Inc.
2    This file is part of elfutils.
3 
4    This file is free software; you can redistribute it and/or modify
5    it under the terms of the GNU General Public License as published by
6    the Free Software Foundation; either version 3 of the License, or
7    (at your option) any later version.
8 
9    elfutils is distributed in the hope that it will be useful, but
10    WITHOUT ANY WARRANTY; without even the implied warranty of
11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12    GNU General Public License for more details.
13 
14    You should have received a copy of the GNU General Public License
15    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
16 
17 #ifdef HAVE_CONFIG_H
18 # include <config.h>
19 #endif
20 
21 #include <fcntl.h>
22 #include ELFUTILS_HEADER(dw)
23 #include <stdio.h>
24 #include <unistd.h>
25 #include <dwarf.h>
26 
27 int
main(int argc,char * argv[])28 main (int argc, char *argv[])
29 {
30   for (int i = 1; i < argc; ++i)
31     {
32       int fd = open (argv[i], O_RDONLY);
33 
34       Dwarf *dbg = dwarf_begin (fd, DWARF_C_READ);
35       if (dbg != NULL)
36 	{
37 	  Dwarf_Off off = 0;
38 	  size_t cuhl;
39 	  Dwarf_Off noff;
40 
41 	  while (dwarf_nextcu (dbg, off, &noff, &cuhl, NULL, NULL, NULL) == 0)
42 	    {
43 	      Dwarf_Die die_mem;
44 	      Dwarf_Die *die = dwarf_offdie (dbg, off + cuhl, &die_mem);
45 
46 	      Dwarf_Die iter_mem;
47 	      Dwarf_Die *iter = &iter_mem;
48 	      dwarf_child (die, &iter_mem);
49 
50 	      while (1)
51 		{
52 		  if (dwarf_tag (iter) == DW_TAG_variable)
53 		    {
54 		      Dwarf_Attribute attr_mem;
55 		      Dwarf_Die form_mem;
56 		      dwarf_formref_die (dwarf_attr (iter, DW_AT_type,
57 						     &attr_mem),
58 					 &form_mem);
59 		    }
60 
61 		  if (dwarf_siblingof (iter, &iter_mem) != 0)
62 		    break;
63 		}
64 
65 	      off = noff;
66 	    }
67 
68 	  off = 0;
69 	  uint64_t type_sig;
70 
71 	  while (dwarf_next_unit (dbg, off, &noff, &cuhl, NULL, NULL, NULL,
72 				  NULL, &type_sig, NULL) == 0)
73 	    {
74 	      Dwarf_Die die_mem;
75 	      Dwarf_Die *die = dwarf_offdie_types (dbg, off + cuhl, &die_mem);
76 
77 	      if (die == NULL)
78 		printf ("fail\n");
79 	      else
80 		printf ("ok\n");
81 
82 	      off = noff;
83 	    }
84 
85 	  dwarf_end (dbg);
86 	}
87 
88       close (fd);
89     }
90 }
91