1 /* Copyright (C) 2005, 2013 Red Hat, Inc.
2 This file is part of elfutils.
3
4 This file is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
8
9 elfutils is distributed in the hope that it will be useful, but
10 WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
16
17 #ifdef HAVE_CONFIG_H
18 # include <config.h>
19 #endif
20
21 #include <err.h>
22 #include <fcntl.h>
23 #include ELFUTILS_HEADER(dw)
24 #include ELFUTILS_HEADER(dwelf)
25 #include <stdio.h>
26 #include <unistd.h>
27
28
29 static int
cb(Dwarf_Die * func,void * arg)30 cb (Dwarf_Die *func, void *arg __attribute__ ((unused)))
31 {
32 const char *file = dwarf_decl_file (func);
33 int line = -1;
34 dwarf_decl_line (func, &line);
35 const char *fct = dwarf_diename (func);
36
37 printf ("%s:%d:%s\n", file, line, fct);
38
39 return DWARF_CB_ABORT;
40 }
41
42 static Dwarf *
setup_alt(Dwarf * main)43 setup_alt (Dwarf *main)
44 {
45 const char *alt_name;
46 const void *build_id;
47 ssize_t ret = dwelf_dwarf_gnu_debugaltlink (main, &alt_name, &build_id);
48 if (ret == 0)
49 return NULL;
50 if (ret == -1)
51 errx (1, "dwelf_dwarf_gnu_debugaltlink: %s", dwarf_errmsg (-1));
52 int fd = open (alt_name, O_RDONLY);
53 if (fd < 0)
54 err (1, "open (%s)", alt_name);
55 Dwarf *dbg_alt = dwarf_begin (fd, DWARF_C_READ);
56 if (dbg_alt == NULL)
57 errx (1, "dwarf_begin (%s): %s", alt_name, dwarf_errmsg (-1));
58 if (elf_cntl (dwarf_getelf (dbg_alt), ELF_C_FDREAD) != 0)
59 errx (1, "elf_cntl (%s, ELF_C_FDREAD): %s", alt_name, elf_errmsg (-1));
60 close (fd);
61 dwarf_setalt (main, dbg_alt);
62 return dbg_alt;
63 }
64
65 int
main(int argc,char * argv[])66 main (int argc, char *argv[])
67 {
68 for (int i = 1; i < argc; ++i)
69 {
70 int fd = open (argv[i], O_RDONLY);
71 if (fd < 0)
72 err (1, "open (%s)", argv[i]);
73
74 Dwarf *dbg = dwarf_begin (fd, DWARF_C_READ);
75 if (dbg != NULL)
76 {
77 Dwarf_Off off = 0;
78 size_t cuhl;
79 Dwarf_Off noff;
80 Dwarf *dbg_alt = setup_alt (dbg);
81
82 while (dwarf_nextcu (dbg, off, &noff, &cuhl, NULL, NULL, NULL) == 0)
83 {
84 Dwarf_Die die_mem;
85 Dwarf_Die *die = dwarf_offdie (dbg, off + cuhl, &die_mem);
86
87 /* Explicitly stop in the callback and then resume each time. */
88 ptrdiff_t doff = 0;
89 do
90 {
91 doff = dwarf_getfuncs (die, cb, NULL, doff);
92 if (dwarf_errno () != 0)
93 errx (1, "dwarf_getfuncs (%s): %s",
94 argv[i], dwarf_errmsg (-1));
95 }
96 while (doff != 0);
97
98 off = noff;
99 }
100
101 dwarf_end (dbg_alt);
102 dwarf_end (dbg);
103 }
104 else
105 errx (1, "dwarf_begin (%s): %s", argv[i], dwarf_errmsg (-1));
106
107 close (fd);
108 }
109 }
110