1 /* Copyright (C) 2002, 2004 Red Hat, Inc.
2 Written by Ulrich Drepper <drepper@redhat.com>, 2002.
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 <fcntl.h>
15 #include <inttypes.h>
16 #include <libelf.h>
17 #include <libdw.h>
18 #include <stdio.h>
19 #include <unistd.h>
20
21
22 int
main(int argc,char * argv[])23 main (int argc, char *argv[])
24 {
25 int result = 0;
26 int cnt;
27
28 for (cnt = 1; cnt < argc; ++cnt)
29 {
30 int fd = open (argv[cnt], O_RDONLY);
31
32 Dwarf *dbg = dwarf_begin (fd, DWARF_C_READ);
33 if (dbg == NULL)
34 {
35 printf ("%s not usable: %s\n", argv[cnt], dwarf_errmsg (-1));
36 close (fd);
37 continue;
38 }
39
40 Dwarf_Off cuoff = 0;
41 Dwarf_Off old_cuoff = 0;
42 size_t hsize;
43 Dwarf_Off ao;
44 uint8_t asz;
45 uint8_t osz;
46 while (dwarf_nextcu (dbg, cuoff, &cuoff, &hsize, &ao, &asz, &osz) == 0)
47 {
48 printf ("cuhl = %zu, o = %llu, asz = %hhu, osz = %hhu, ncu = %llu\n",
49 hsize, (unsigned long long int) ao,
50 asz, osz, (unsigned long long int) cuoff);
51
52 /* Get the DIE for the CU. */
53 Dwarf_Die die;
54 if (dwarf_offdie (dbg, old_cuoff + hsize, &die) == NULL)
55 {
56 /* Something went wrong. */
57 printf ("%s: cannot get CU die\n", argv[cnt]);
58 result = 1;
59 break;
60 }
61 old_cuoff = cuoff;
62
63 Dwarf_Lines *lb;
64 size_t nlb;
65 if (dwarf_getsrclines (&die, &lb, &nlb) != 0)
66 {
67 printf ("%s: cannot get lines\n", argv[cnt]);
68 result = 1;
69 break;
70 }
71
72 printf (" %zu lines\n", nlb);
73
74 for (size_t i = 0; i < nlb; ++i)
75 {
76 Dwarf_Line *l = dwarf_onesrcline (lb, i);
77 if (l == NULL)
78 {
79 printf ("%s: cannot get individual line\n", argv[cnt]);
80 result = 1;
81 break;
82 }
83
84 Dwarf_Addr addr;
85 if (dwarf_lineaddr (l, &addr) != 0)
86 addr = 0;
87 const char *file = dwarf_linesrc (l, NULL, NULL);
88 int line;
89 if (dwarf_lineno (l, &line) != 0)
90 line = 0;
91
92 printf ("%" PRIx64 ": %s:%d:", (uint64_t) addr,
93 file ?: "???", line);
94
95 int column;
96 if (dwarf_linecol (l, &column) != 0)
97 column = 0;
98 if (column >= 0)
99 printf ("%d:", column);
100
101 bool is_stmt;
102 if (dwarf_linebeginstatement (l, &is_stmt) != 0)
103 is_stmt = false;
104 bool end_sequence;
105 if (dwarf_lineendsequence (l, &end_sequence) != 0)
106 end_sequence = false;
107 bool basic_block;
108 if (dwarf_lineblock (l, &basic_block) != 0)
109 basic_block = false;
110 bool prologue_end;
111 if (dwarf_lineprologueend (l, &prologue_end) != 0)
112 prologue_end = false;
113 bool epilogue_begin;
114 if (dwarf_lineepiloguebegin (l, &epilogue_begin) != 0)
115 epilogue_begin = false;
116
117 printf (" is_stmt:%s, end_seq:%s, bb:%s, prologue:%s, epilogue:%s\n",
118 is_stmt ? "yes" : "no", end_sequence ? "yes" : "no",
119 basic_block ? "yes" : "no", prologue_end ? "yes" : "no",
120 epilogue_begin ? "yes" : "no");
121 }
122 }
123
124 dwarf_end (dbg);
125 close (fd);
126 }
127
128 return result;
129 }
130