1 /* Copyright (C) 2002, 2004 Red Hat, Inc.
2 This file is part of elfutils.
3 Written by Ulrich Drepper <drepper@redhat.com>, 2002.
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 <fcntl.h>
23 #include <inttypes.h>
24 #include <libelf.h>
25 #include ELFUTILS_HEADER(dw)
26 #include <stdio.h>
27 #include <unistd.h>
28
29
30 int
main(int argc,char * argv[])31 main (int argc, char *argv[])
32 {
33 int result = 0;
34 int cnt;
35
36 for (cnt = 1; cnt < argc; ++cnt)
37 {
38 int fd = open (argv[cnt], O_RDONLY);
39
40 Dwarf *dbg = dwarf_begin (fd, DWARF_C_READ);
41 if (dbg == NULL)
42 {
43 printf ("%s not usable: %s\n", argv[cnt], dwarf_errmsg (-1));
44 close (fd);
45 continue;
46 }
47
48 Dwarf_Off cuoff = 0;
49 Dwarf_Off old_cuoff = 0;
50 size_t hsize;
51 Dwarf_Off ao;
52 uint8_t asz;
53 uint8_t osz;
54 while (dwarf_nextcu (dbg, cuoff, &cuoff, &hsize, &ao, &asz, &osz) == 0)
55 {
56 printf ("cuhl = %zu, o = %llu, asz = %hhu, osz = %hhu, ncu = %llu\n",
57 hsize, (unsigned long long int) ao,
58 asz, osz, (unsigned long long int) cuoff);
59
60 /* Get the DIE for the CU. */
61 Dwarf_Die die;
62 if (dwarf_offdie (dbg, old_cuoff + hsize, &die) == NULL)
63 {
64 /* Something went wrong. */
65 printf ("%s: cannot get CU die\n", argv[cnt]);
66 result = 1;
67 break;
68 }
69 old_cuoff = cuoff;
70
71 Dwarf_Lines *lb;
72 size_t nlb;
73 if (dwarf_getsrclines (&die, &lb, &nlb) != 0)
74 {
75 printf ("%s: cannot get lines\n", argv[cnt]);
76 result = 1;
77 break;
78 }
79
80 printf (" %zu lines\n", nlb);
81
82 for (size_t i = 0; i < nlb; ++i)
83 {
84 Dwarf_Line *l = dwarf_onesrcline (lb, i);
85 if (l == NULL)
86 {
87 printf ("%s: cannot get individual line\n", argv[cnt]);
88 result = 1;
89 break;
90 }
91
92 Dwarf_Addr addr;
93 if (dwarf_lineaddr (l, &addr) != 0)
94 addr = 0;
95 const char *file = dwarf_linesrc (l, NULL, NULL);
96 int line;
97 if (dwarf_lineno (l, &line) != 0)
98 line = 0;
99
100 printf ("%" PRIx64 ": %s:%d:", (uint64_t) addr,
101 file ?: "???", line);
102
103 int column;
104 if (dwarf_linecol (l, &column) != 0)
105 column = 0;
106 if (column >= 0)
107 printf ("%d:", column);
108
109 bool is_stmt;
110 if (dwarf_linebeginstatement (l, &is_stmt) != 0)
111 is_stmt = false;
112 bool end_sequence;
113 if (dwarf_lineendsequence (l, &end_sequence) != 0)
114 end_sequence = false;
115 bool basic_block;
116 if (dwarf_lineblock (l, &basic_block) != 0)
117 basic_block = false;
118 bool prologue_end;
119 if (dwarf_lineprologueend (l, &prologue_end) != 0)
120 prologue_end = false;
121 bool epilogue_begin;
122 if (dwarf_lineepiloguebegin (l, &epilogue_begin) != 0)
123 epilogue_begin = false;
124
125 printf (" is_stmt:%s, end_seq:%s, bb:%s, prologue:%s, epilogue:%s\n",
126 is_stmt ? "yes" : "no", end_sequence ? "yes" : "no",
127 basic_block ? "yes" : "no", prologue_end ? "yes" : "no",
128 epilogue_begin ? "yes" : "no");
129 }
130 }
131
132 dwarf_end (dbg);
133 close (fd);
134 }
135
136 return result;
137 }
138