1/* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2004, 2005 Red Hat, Inc.
2   This file is part of elfutils.
3   Written by Ulrich Drepper <drepper@redhat.com>, 1998.
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
20#include <fcntl.h>
21#include <inttypes.h>
22#include ELFUTILS_HEADER(dw)
23#include <stdio.h>
24#include <unistd.h>
25
26
27int
28main (int argc, char *argv[])
29{
30  int cnt;
31
32  for (cnt = 1; cnt < argc; ++cnt)
33    {
34      int fd = open (argv[cnt], O_RDONLY);
35      Dwarf *dbg = dwarf_begin (fd, DWARF_C_READ);
36      if  (dbg == NULL)
37	{
38	  printf ("%s not usable: %s\n", argv[cnt], dwarf_errmsg (-1));
39	  close  (fd);
40	  continue;
41	}
42
43      Dwarf_Off cuoff = 0;
44      Dwarf_Off old_cuoff = 0;
45      size_t hsize;
46      while (dwarf_nextcu (dbg, cuoff, &cuoff, &hsize, NULL, NULL, NULL) == 0)
47	{
48	  /* Get the DIE for the CU.  */
49	  Dwarf_Die die;
50 	  if (dwarf_offdie (dbg, old_cuoff + hsize, &die) == NULL)
51	    /* Something went wrong.  */
52	    break;
53
54	  Dwarf_Off offset = 0;
55
56	  while (1)
57	    {
58	      size_t length;
59	      Dwarf_Abbrev *abbrev = dwarf_getabbrev (&die, offset, &length);
60	      if (abbrev == NULL || abbrev == DWARF_END_ABBREV)
61		/* End of the list.  */
62		break;
63
64	      unsigned tag = dwarf_getabbrevtag (abbrev);
65	      if (tag == 0)
66		{
67		  printf ("dwarf_getabbrevtag at offset %llu returned error: %s\n",
68			  (unsigned long long int) offset,
69			  dwarf_errmsg (-1));
70		  break;
71		}
72
73	      unsigned code = dwarf_getabbrevcode (abbrev);
74	      if (code == 0)
75		{
76		  printf ("dwarf_getabbrevcode at offset %llu returned error: %s\n",
77			  (unsigned long long int) offset,
78			  dwarf_errmsg (-1));
79		  break;
80		}
81
82	      int children = dwarf_abbrevhaschildren (abbrev);
83	      if (children < 0)
84		{
85		  printf ("dwarf_abbrevhaschildren at offset %llu returned error: %s\n",
86			  (unsigned long long int) offset,
87			  dwarf_errmsg (-1));
88		  break;
89		}
90
91	      printf ("abbrev[%llu]: code = %u, tag = %u, children = %d\n",
92		      (unsigned long long int) offset, code, tag, children);
93
94	      size_t attrcnt;
95	      if (dwarf_getattrcnt (abbrev, &attrcnt) != 0)
96		{
97		  printf ("dwarf_getattrcnt at offset %llu returned error: %s\n",
98			  (unsigned long long int) offset,
99			  dwarf_errmsg (-1));
100		  break;
101		}
102
103	      unsigned int attr_num;
104	      unsigned int attr_form;
105	      Dwarf_Off aboffset;
106	      size_t j;
107	      for (j = 0; j < attrcnt; ++j)
108		if (dwarf_getabbrevattr (abbrev, j, &attr_num, &attr_form,
109					 &aboffset))
110		  printf ("dwarf_getabbrevattr for abbrev[%llu] and index %zu failed\n",
111			  (unsigned long long int) offset, j);
112		else
113		  printf ("abbrev[%llu]: attr[%zu]: code = %u, form = %u, offset = %" PRIu64 "\n",
114			  (unsigned long long int) offset, j, attr_num,
115			  attr_form, (uint64_t) aboffset);
116
117	      offset += length;
118	    }
119
120	  old_cuoff = cuoff;
121	}
122
123      if (dwarf_end (dbg) != 0)
124	printf ("dwarf_end failed for %s: %s\n", argv[cnt],
125		dwarf_errmsg (-1));
126
127      close (fd);
128    }
129
130  return 0;
131}
132