1 /* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2004 Red Hat, Inc.
2 Written by Ulrich Drepper <drepper@redhat.com>, 1998.
3
4 This program is Open Source software; you can redistribute it and/or
5 modify it under the terms of the Open Software License version 1.0 as
6 published by the Open Source Initiative.
7
8 You should have received a copy of the Open Software License along
9 with this program; if not, you may obtain a copy of the Open Software
10 License version 1.0 from http://www.opensource.org/licenses/osl.php or
11 by writing the Open Source Initiative c/o Lawrence Rosen, Esq.,
12 3001 King Ranch Road, Ukiah, CA 95482. */
13
14 #include <config.h>
15
16 #include <fcntl.h>
17 #include <inttypes.h>
18 #include <libdw.h>
19 #include <stdio.h>
20 #include <unistd.h>
21
22
23 int
main(int argc,char * argv[])24 main (int argc, char *argv[])
25 {
26 int cnt;
27
28 for (cnt = 1; cnt < argc; ++cnt)
29 {
30 int fd = open (argv[cnt], O_RDONLY);
31 Dwarf *dbg = dwarf_begin (fd, DWARF_C_READ);
32 if (dbg == NULL)
33 {
34 printf ("%s not usable: %s\n", argv[cnt], dwarf_errmsg (-1));
35 close (fd);
36 continue;
37 }
38
39 Dwarf_Off cuoff = 0;
40 Dwarf_Off old_cuoff = 0;
41 size_t hsize;
42 while (dwarf_nextcu (dbg, cuoff, &cuoff, &hsize, NULL, NULL, NULL) == 0)
43 {
44 /* Get the DIE for the CU. */
45 Dwarf_Die die;
46 if (dwarf_offdie (dbg, old_cuoff + hsize, &die) == NULL)
47 /* Something went wrong. */
48 break;
49
50 Dwarf_Off offset = 0;
51
52 while (1)
53 {
54 size_t length;
55 Dwarf_Abbrev *abbrev = dwarf_getabbrev (&die, offset, &length);
56 if (abbrev == NULL)
57 /* End of the list. */
58 break;
59
60 unsigned tag = dwarf_getabbrevtag (abbrev);
61 if (tag == 0)
62 {
63 printf ("dwarf_getabbrevtag at offset %llu returned error: %s\n",
64 (unsigned long long int) offset,
65 dwarf_errmsg (-1));
66 break;
67 }
68
69 unsigned code = dwarf_getabbrevcode (abbrev);
70 if (code == 0)
71 {
72 printf ("dwarf_getabbrevcode at offset %llu returned error: %s\n",
73 (unsigned long long int) offset,
74 dwarf_errmsg (-1));
75 break;
76 }
77
78 int children = dwarf_abbrevhaschildren (abbrev);
79 if (children < 0)
80 {
81 printf ("dwarf_abbrevhaschildren at offset %llu returned error: %s\n",
82 (unsigned long long int) offset,
83 dwarf_errmsg (-1));
84 break;
85 }
86
87 printf ("abbrev[%llu]: code = %u, tag = %u, children = %d\n",
88 (unsigned long long int) offset, code, tag, children);
89
90 size_t attrcnt;
91 if (dwarf_getattrcnt (abbrev, &attrcnt) != 0)
92 {
93 printf ("dwarf_getattrcnt at offset %llu returned error: %s\n",
94 (unsigned long long int) offset,
95 dwarf_errmsg (-1));
96 break;
97 }
98
99 unsigned int attr_num;
100 unsigned int attr_form;
101 Dwarf_Off aboffset;
102 size_t j;
103 for (j = 0; j < attrcnt; ++j)
104 if (dwarf_getabbrevattr (abbrev, j, &attr_num, &attr_form,
105 &aboffset))
106 printf ("dwarf_getabbrevattr for abbrev[%llu] and index %zu failed\n",
107 (unsigned long long int) offset, j);
108 else
109 printf ("abbrev[%llu]: attr[%zu]: code = %u, form = %u, offset = %" PRIu64 "\n",
110 (unsigned long long int) offset, j, attr_num,
111 attr_form, (uint64_t) aboffset);
112
113 offset += length;
114 }
115
116 old_cuoff = cuoff;
117 }
118
119 if (dwarf_end (dbg) != 0)
120 printf ("dwarf_end failed for %s: %s\n", argv[cnt],
121 dwarf_errmsg (-1));
122
123 close (fd);
124 }
125
126 return 0;
127 }
128