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
27 int
main(int argc,char * argv[])28 main (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