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 /* Test something obviously wrong. */
55 Dwarf_Abbrev *a = dwarf_getabbrev (&die, (Dwarf_Off) -1, NULL);
56 if (a != NULL)
57 {
58 printf ("dwarf_getabbrev -1 succeeded?\n");
59 break;
60 }
61
62 Dwarf_Off offset = 0;
63
64 while (1)
65 {
66 size_t length;
67 Dwarf_Abbrev *abbrev = dwarf_getabbrev (&die, offset, &length);
68 if (abbrev == NULL || abbrev == DWARF_END_ABBREV)
69 /* End of the list. */
70 break;
71
72 unsigned tag = dwarf_getabbrevtag (abbrev);
73 if (tag == 0)
74 {
75 printf ("dwarf_getabbrevtag at offset %llu returned error: %s\n",
76 (unsigned long long int) offset,
77 dwarf_errmsg (-1));
78 break;
79 }
80
81 unsigned code = dwarf_getabbrevcode (abbrev);
82 if (code == 0)
83 {
84 printf ("dwarf_getabbrevcode at offset %llu returned error: %s\n",
85 (unsigned long long int) offset,
86 dwarf_errmsg (-1));
87 break;
88 }
89
90 int children = dwarf_abbrevhaschildren (abbrev);
91 if (children < 0)
92 {
93 printf ("dwarf_abbrevhaschildren at offset %llu returned error: %s\n",
94 (unsigned long long int) offset,
95 dwarf_errmsg (-1));
96 break;
97 }
98
99 printf ("abbrev[%llu]: code = %u, tag = %u, children = %d\n",
100 (unsigned long long int) offset, code, tag, children);
101
102 size_t attrcnt;
103 if (dwarf_getattrcnt (abbrev, &attrcnt) != 0)
104 {
105 printf ("dwarf_getattrcnt at offset %llu returned error: %s\n",
106 (unsigned long long int) offset,
107 dwarf_errmsg (-1));
108 break;
109 }
110
111 unsigned int attr_num;
112 unsigned int attr_form;
113 Dwarf_Off aboffset;
114 size_t j;
115 for (j = 0; j < attrcnt; ++j)
116 if (dwarf_getabbrevattr (abbrev, j, &attr_num, &attr_form,
117 &aboffset))
118 printf ("dwarf_getabbrevattr for abbrev[%llu] and index %zu failed\n",
119 (unsigned long long int) offset, j);
120 else
121 printf ("abbrev[%llu]: attr[%zu]: code = %u, form = %u, offset = %" PRIu64 "\n",
122 (unsigned long long int) offset, j, attr_num,
123 attr_form, (uint64_t) aboffset);
124
125 offset += length;
126 }
127
128 old_cuoff = cuoff;
129 }
130
131 if (dwarf_end (dbg) != 0)
132 printf ("dwarf_end failed for %s: %s\n", argv[cnt],
133 dwarf_errmsg (-1));
134
135 close (fd);
136 }
137
138 return 0;
139 }
140