1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
/* Test program for dwarf_getscopes.
Copyright (C) 2005, 2014 Red Hat, Inc.
This file is part of elfutils.
This file is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
elfutils is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
#include <assert.h>
#include <inttypes.h>
#include ELFUTILS_HEADER(dwfl)
#include <dwarf.h>
#include <argp.h>
#include <stdio.h>
#include <stdio_ext.h>
#include <locale.h>
#include <stdlib.h>
#include <string.h>
#include "system.h"
static void
paddr (const char *prefix, Dwarf_Addr addr, Dwfl_Line *line)
{
const char *src;
int lineno, linecol;
if (line != NULL
&& (src = dwfl_lineinfo (line, &addr, &lineno, &linecol,
NULL, NULL)) != NULL)
{
if (linecol != 0)
printf ("%s%#" PRIx64 " (%s:%d:%d)",
prefix, addr, src, lineno, linecol);
else
printf ("%s%#" PRIx64 " (%s:%d)",
prefix, addr, src, lineno);
}
else
printf ("%s%#" PRIx64, prefix, addr);
}
static void
print_vars (unsigned int indent, Dwarf_Die *die)
{
Dwarf_Die child;
if (dwarf_child (die, &child) == 0)
do
switch (dwarf_tag (&child))
{
case DW_TAG_variable:
case DW_TAG_formal_parameter:
printf ("%*s%-30s[%6" PRIx64 "]\n", indent, "",
dwarf_diename (&child),
(uint64_t) dwarf_dieoffset (&child));
break;
default:
break;
}
while (dwarf_siblingof (&child, &child) == 0);
Dwarf_Attribute attr_mem;
Dwarf_Die origin;
if (dwarf_hasattr (die, DW_AT_abstract_origin)
&& dwarf_formref_die (dwarf_attr (die, DW_AT_abstract_origin, &attr_mem),
&origin) != NULL
&& dwarf_child (&origin, &child) == 0)
do
switch (dwarf_tag (&child))
{
case DW_TAG_variable:
case DW_TAG_formal_parameter:
printf ("%*s%s (abstract)\n", indent, "",
dwarf_diename (&child));
break;
default:
break;
}
while (dwarf_siblingof (&child, &child) == 0);
}
#define INDENT 4
static void
handle_address (GElf_Addr pc, Dwfl *dwfl)
{
Dwarf_Addr cubias;
Dwarf_Die *cudie = dwfl_addrdie (dwfl, pc, &cubias);
if (cudie == NULL)
error (EXIT_FAILURE, 0, "dwfl_addrdie: %s", dwfl_errmsg (-1));
Dwarf_Die *scopes;
int n = dwarf_getscopes (cudie, pc - cubias, &scopes);
if (n < 0)
error (EXIT_FAILURE, 0, "dwarf_getscopes: %s", dwarf_errmsg (-1));
else if (n == 0)
printf ("%#" PRIx64 ": not in any scope\n", pc);
else
{
printf ("%#" PRIx64 ":\n", pc);
unsigned int indent = 0;
while (n-- > 0)
{
Dwarf_Die *const die = &scopes[n];
indent += INDENT;
printf ("%*s%s (%#x)", indent, "",
dwarf_diename (die) ?: "<unnamed>",
dwarf_tag (die));
Dwarf_Addr lowpc, highpc;
if (dwarf_lowpc (die, &lowpc) == 0
&& dwarf_highpc (die, &highpc) == 0)
{
lowpc += cubias;
highpc += cubias;
Dwfl_Line *loline = dwfl_getsrc (dwfl, lowpc);
Dwfl_Line *hiline = dwfl_getsrc (dwfl, highpc - 1);
paddr (": ", lowpc, loline);
if (highpc != lowpc)
paddr (" .. ", highpc - 1, hiline == loline ? NULL : hiline);
}
puts ("");
print_vars (indent + INDENT, die);
}
free (scopes);
}
}
int
main (int argc, char *argv[])
{
int remaining;
/* Set locale. */
(void) setlocale (LC_ALL, "");
Dwfl *dwfl = NULL;
(void) argp_parse (dwfl_standard_argp (), argc, argv, 0, &remaining, &dwfl);
assert (dwfl != NULL);
int result = 0;
/* Now handle the addresses. In case none are given on the command
line, read from stdin. */
if (remaining == argc)
{
/* We use no threads here which can interfere with handling a stream. */
(void) __fsetlocking (stdin, FSETLOCKING_BYCALLER);
char *buf = NULL;
size_t len = 0;
while (!feof_unlocked (stdin))
{
if (getline (&buf, &len, stdin) < 0)
break;
char *endp;
uintmax_t addr = strtoumax (buf, &endp, 0);
if (endp != buf)
handle_address (addr, dwfl);
else
result = 1;
}
free (buf);
}
else
{
do
{
char *endp;
uintmax_t addr = strtoumax (argv[remaining], &endp, 0);
if (endp != argv[remaining])
handle_address (addr, dwfl);
else
result = 1;
}
while (++remaining < argc);
}
dwfl_end (dwfl);
return result;
}
|
