1 /* Test dwarf_get_units finds split DWO CUs.
2 Copyright (C) 2018 Red Hat, Inc.
3 This file is part of elfutils.
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 #ifdef HAVE_CONFIG_H
19 # include <config.h>
20 #endif
21
22 #include <dwarf.h>
23 #include ELFUTILS_HEADER(dw)
24 #include <stdio.h>
25 #include <inttypes.h>
26 #include <sys/types.h>
27 #include <sys/stat.h>
28 #include <fcntl.h>
29 #include <unistd.h>
30
31
32 int
main(int argc,char * argv[])33 main (int argc, char *argv[])
34 {
35 for (int i = 1; i < argc; i++)
36 {
37 printf ("file: %s\n", argv[i]);
38 int fd = open (argv[i], O_RDONLY);
39 Dwarf *dbg = dwarf_begin (fd, DWARF_C_READ);
40 if (dbg == NULL)
41 {
42 printf ("%s not usable: %s\n", argv[i], dwarf_errmsg (-1));
43 return -1;
44 }
45
46 Dwarf_CU *cu = NULL;
47 Dwarf_Die cudie, subdie;
48 uint8_t unit_type;
49 int count = 0;
50 while (dwarf_get_units (dbg, cu, &cu, NULL,
51 &unit_type, &cudie, &subdie) == 0)
52 {
53 count++;
54 printf ("Got cudie unit_type: %" PRIx8 "\n", unit_type);
55
56 if (unit_type == DW_UT_skeleton)
57 {
58 Dwarf_CU *skel_cu = cudie.cu;
59 Dwarf_CU *split_cu = subdie.cu;
60 Dwarf_Die skel_die, split_die;
61 uint64_t skel_id, split_id;
62
63 printf ("Found a skeleton unit, with split die: %s\n",
64 dwarf_diename (&subdie));
65
66 if (dwarf_cu_die (skel_cu, &skel_die, NULL, NULL, NULL, NULL,
67 &skel_id, NULL) == NULL)
68 {
69 printf ("bad skel_cu: %s\n", dwarf_errmsg (-1));
70 return -1;
71 }
72
73 if (dwarf_cu_die (split_cu, &split_die, NULL, NULL, NULL, NULL,
74 &split_id, NULL) == NULL)
75 {
76 printf ("bad skel_cu: %s\n", dwarf_errmsg (-1));
77 return -1;
78 }
79
80 if (skel_id != split_id)
81 {
82 printf ("Skeleton id and Split id not equal!\n");
83 return -1;
84 }
85 }
86 }
87
88 if (count == 0)
89 {
90 printf ("No units found\n");
91 return -1;
92 }
93
94 dwarf_end (dbg);
95 close (fd);
96
97 printf ("\n");
98 }
99
100 return 0;
101 }
102