1 /* Test program for dwarf_getscopes.
2 Copyright (C) 2005 Red Hat, Inc.
3 This file is part of Red Hat elfutils.
4
5 Red Hat elfutils is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by the
7 Free Software Foundation; version 2 of the License.
8
9 Red Hat 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 GNU
12 General Public License for more details.
13
14 You should have received a copy of the GNU General Public License along
15 with Red Hat elfutils; if not, write to the Free Software Foundation,
16 Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA.
17
18 Red Hat elfutils is an included package of the Open Invention Network.
19 An included package of the Open Invention Network is a package for which
20 Open Invention Network licensees cross-license their patents. No patent
21 license is granted, either expressly or impliedly, by designation as an
22 included package. Should you wish to participate in the Open Invention
23 Network licensing program, please visit www.openinventionnetwork.com
24 <http://www.openinventionnetwork.com>. */
25
26 #include <config.h>
27 #include <assert.h>
28 #include <inttypes.h>
29 #include ELFUTILS_HEADER(dwfl)
30 #include <dwarf.h>
31 #include <argp.h>
32 #include <stdio.h>
33 #include <stdio_ext.h>
34 #include <locale.h>
35 #include <stdlib.h>
36 #include <error.h>
37 #include <string.h>
38
39
40 static void
paddr(const char * prefix,Dwarf_Addr addr,Dwfl_Line * line)41 paddr (const char *prefix, Dwarf_Addr addr, Dwfl_Line *line)
42 {
43 const char *src;
44 int lineno, linecol;
45 if (line != NULL
46 && (src = dwfl_lineinfo (line, &addr, &lineno, &linecol,
47 NULL, NULL)) != NULL)
48 {
49 if (linecol != 0)
50 printf ("%s%#" PRIx64 " (%s:%d:%d)",
51 prefix, addr, src, lineno, linecol);
52 else
53 printf ("%s%#" PRIx64 " (%s:%d)",
54 prefix, addr, src, lineno);
55 }
56 else
57 printf ("%s%#" PRIx64, prefix, addr);
58 }
59
60 static void
print_vars(unsigned int indent,Dwarf_Die * die)61 print_vars (unsigned int indent, Dwarf_Die *die)
62 {
63 Dwarf_Die child;
64 if (dwarf_child (die, &child) == 0)
65 do
66 switch (dwarf_tag (&child))
67 {
68 case DW_TAG_variable:
69 case DW_TAG_formal_parameter:
70 printf ("%*s%-30s[%6" PRIx64 "]\n", indent, "",
71 dwarf_diename (&child),
72 (uint64_t) dwarf_dieoffset (&child));
73 break;
74 default:
75 break;
76 }
77 while (dwarf_siblingof (&child, &child) == 0);
78
79 Dwarf_Attribute attr_mem;
80 Dwarf_Die origin;
81 if (dwarf_hasattr (die, DW_AT_abstract_origin)
82 && dwarf_formref_die (dwarf_attr (die, DW_AT_abstract_origin, &attr_mem),
83 &origin) != NULL
84 && dwarf_child (&origin, &child) == 0)
85 do
86 switch (dwarf_tag (&child))
87 {
88 case DW_TAG_variable:
89 case DW_TAG_formal_parameter:
90 printf ("%*s%s (abstract)\n", indent, "",
91 dwarf_diename (&child));
92 break;
93 default:
94 break;
95 }
96 while (dwarf_siblingof (&child, &child) == 0);
97 }
98
99
100 #define INDENT 4
101
102 static void
handle_address(GElf_Addr pc,Dwfl * dwfl)103 handle_address (GElf_Addr pc, Dwfl *dwfl)
104 {
105 Dwarf_Addr cubias;
106 Dwarf_Die *cudie = dwfl_addrdie (dwfl, pc, &cubias);
107 if (cudie == NULL)
108 error (EXIT_FAILURE, 0, "dwfl_addrdie: %s", dwfl_errmsg (-1));
109
110 Dwarf_Die *scopes;
111 int n = dwarf_getscopes (cudie, pc - cubias, &scopes);
112 if (n < 0)
113 error (EXIT_FAILURE, 0, "dwarf_getscopes: %s", dwarf_errmsg (-1));
114 else if (n == 0)
115 printf ("%#" PRIx64 ": not in any scope\n", pc);
116 else
117 {
118 printf ("%#" PRIx64 ":\n", pc);
119 unsigned int indent = 0;
120 while (n-- > 0)
121 {
122 Dwarf_Die *const die = &scopes[n];
123
124 indent += INDENT;
125 printf ("%*s%s (%#x)", indent, "",
126 dwarf_diename (die) ?: "<unnamed>",
127 dwarf_tag (die));
128
129 Dwarf_Addr lowpc, highpc;
130 if (dwarf_lowpc (die, &lowpc) == 0
131 && dwarf_highpc (die, &highpc) == 0)
132 {
133 lowpc += cubias;
134 highpc += cubias;
135 Dwfl_Line *loline = dwfl_getsrc (dwfl, lowpc);
136 Dwfl_Line *hiline = dwfl_getsrc (dwfl, highpc);
137 paddr (": ", lowpc, loline);
138 if (highpc != lowpc)
139 paddr (" .. ", lowpc, hiline == loline ? NULL : hiline);
140 }
141 puts ("");
142
143 print_vars (indent + INDENT, die);
144 }
145 }
146 }
147
148 int
main(int argc,char * argv[])149 main (int argc, char *argv[])
150 {
151 int remaining;
152
153 /* Set locale. */
154 (void) setlocale (LC_ALL, "");
155
156 Dwfl *dwfl = NULL;
157 (void) argp_parse (dwfl_standard_argp (), argc, argv, 0, &remaining, &dwfl);
158 assert (dwfl != NULL);
159
160 int result = 0;
161
162 /* Now handle the addresses. In case none are given on the command
163 line, read from stdin. */
164 if (remaining == argc)
165 {
166 /* We use no threads here which can interfere with handling a stream. */
167 (void) __fsetlocking (stdin, FSETLOCKING_BYCALLER);
168
169 char *buf = NULL;
170 size_t len = 0;
171 while (!feof_unlocked (stdin))
172 {
173 if (getline (&buf, &len, stdin) < 0)
174 break;
175
176 char *endp;
177 uintmax_t addr = strtoumax (buf, &endp, 0);
178 if (endp != buf)
179 handle_address (addr, dwfl);
180 else
181 result = 1;
182 }
183
184 free (buf);
185 }
186 else
187 {
188 do
189 {
190 char *endp;
191 uintmax_t addr = strtoumax (argv[remaining], &endp, 0);
192 if (endp != argv[remaining])
193 handle_address (addr, dwfl);
194 else
195 result = 1;
196 }
197 while (++remaining < argc);
198 }
199
200 dwfl_end (dwfl);
201
202 return result;
203 }
204