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 {
55 printf ("Warning: no alt file found.\n");
56 return NULL;
57 }
58 Dwarf *dbg_alt = dwarf_begin (fd, DWARF_C_READ);
59 if (dbg_alt == NULL)
60 errx (1, "dwarf_begin (%s): %s", alt_name, dwarf_errmsg (-1));
61 if (elf_cntl (dwarf_getelf (dbg_alt), ELF_C_FDREAD) != 0)
62 errx (1, "elf_cntl (%s, ELF_C_FDREAD): %s", alt_name, elf_errmsg (-1));
63 close (fd);
64 dwarf_setalt (main, dbg_alt);
65 return dbg_alt;
66 }
67
68 int
main(int argc,char * argv[])69 main (int argc, char *argv[])
70 {
71 for (int i = 1; i < argc; ++i)
72 {
73 int fd = open (argv[i], O_RDONLY);
74 if (fd < 0)
75 err (1, "open (%s)", argv[i]);
76
77 Dwarf *dbg = dwarf_begin (fd, DWARF_C_READ);
78 if (dbg != NULL)
79 {
80 Dwarf_Off off = 0;
81 size_t cuhl;
82 Dwarf_Off noff;
83 Dwarf *dbg_alt = setup_alt (dbg);
84
85 while (dwarf_nextcu (dbg, off, &noff, &cuhl, NULL, NULL, NULL) == 0)
86 {
87 Dwarf_Die die_mem;
88 Dwarf_Die *die = dwarf_offdie (dbg, off + cuhl, &die_mem);
89
90 /* Explicitly stop in the callback and then resume each time. */
91 ptrdiff_t doff = 0;
92 do
93 {
94 doff = dwarf_getfuncs (die, cb, NULL, doff);
95 if (dwarf_errno () != 0)
96 errx (1, "dwarf_getfuncs (%s): %s",
97 argv[i], dwarf_errmsg (-1));
98 }
99 while (doff != 0);
100
101 off = noff;
102 }
103
104 dwarf_end (dbg_alt);
105 dwarf_end (dbg);
106 }
107 else
108 errx (1, "dwarf_begin (%s): %s", argv[i], dwarf_errmsg (-1));
109
110 close (fd);
111 }
112 }
113