1 /* Test program for dwarf_getscopes.
2 Copyright (C) 2005, 2014 Red Hat, Inc.
3 This file is part of elfutils.
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 #include <config.h>
19 #include <assert.h>
20 #include <inttypes.h>
21 #include ELFUTILS_HEADER(dwfl)
22 #include <dwarf.h>
23 #include <argp.h>
24 #include <stdio.h>
25 #include <stdio_ext.h>
26 #include <locale.h>
27 #include <stdlib.h>
28 #include <error.h>
29 #include <string.h>
30 #include <fnmatch.h>
31
32
33 static void
paddr(const char * prefix,Dwarf_Addr addr,Dwfl_Line * line)34 paddr (const char *prefix, Dwarf_Addr addr, Dwfl_Line *line)
35 {
36 const char *src;
37 int lineno, linecol;
38 if (line != NULL
39 && (src = dwfl_lineinfo (line, &addr, &lineno, &linecol,
40 NULL, NULL)) != NULL)
41 {
42 if (linecol != 0)
43 printf ("%s%#" PRIx64 " (%s:%d:%d)",
44 prefix, addr, src, lineno, linecol);
45 else
46 printf ("%s%#" PRIx64 " (%s:%d)",
47 prefix, addr, src, lineno);
48 }
49 else
50 printf ("%s%#" PRIx64, prefix, addr);
51 }
52
53
54 static void
print_vars(unsigned int indent,Dwarf_Die * die)55 print_vars (unsigned int indent, Dwarf_Die *die)
56 {
57 Dwarf_Die child;
58 if (dwarf_child (die, &child) == 0)
59 do
60 switch (dwarf_tag (&child))
61 {
62 case DW_TAG_variable:
63 case DW_TAG_formal_parameter:
64 printf ("%*s%-30s[%6" PRIx64 "]\n", indent, "",
65 dwarf_diename (&child),
66 (uint64_t) dwarf_dieoffset (&child));
67 break;
68 default:
69 break;
70 }
71 while (dwarf_siblingof (&child, &child) == 0);
72
73 Dwarf_Attribute attr_mem;
74 Dwarf_Die origin;
75 if (dwarf_hasattr (die, DW_AT_abstract_origin)
76 && dwarf_formref_die (dwarf_attr (die, DW_AT_abstract_origin, &attr_mem),
77 &origin) != NULL
78 && dwarf_child (&origin, &child) == 0)
79 do
80 switch (dwarf_tag (&child))
81 {
82 case DW_TAG_variable:
83 case DW_TAG_formal_parameter:
84 printf ("%*s%s (abstract)\n", indent, "",
85 dwarf_diename (&child));
86 break;
87 default:
88 break;
89 }
90 while (dwarf_siblingof (&child, &child) == 0);
91 }
92
93
94 #define INDENT 4
95
96 struct args
97 {
98 Dwfl *dwfl;
99 Dwarf_Die *cu;
100 Dwarf_Addr dwbias;
101 char **argv;
102 };
103
104 static int
handle_function(Dwarf_Die * funcdie,void * arg)105 handle_function (Dwarf_Die *funcdie, void *arg)
106 {
107 struct args *a = arg;
108
109 const char *name = dwarf_diename (funcdie);
110 char **argv = a->argv;
111 if (argv[0] != NULL)
112 {
113 bool match;
114 do
115 match = fnmatch (*argv, name, 0) == 0;
116 while (!match && *++argv);
117 if (!match)
118 return 0;
119 }
120
121 Dwarf_Die *scopes;
122 int n = dwarf_getscopes_die (funcdie, &scopes);
123 if (n <= 0)
124 error (EXIT_FAILURE, 0, "dwarf_getscopes_die: %s", dwarf_errmsg (-1));
125 else
126 {
127 Dwarf_Addr start, end;
128 const char *fname;
129 const char *modname = dwfl_module_info (dwfl_cumodule (a->cu), NULL,
130 &start, &end,
131 NULL, NULL,
132 &fname, NULL);
133 if (modname == NULL)
134 error (EXIT_FAILURE, 0, "dwfl_module_info: %s", dwarf_errmsg (-1));
135 if (modname[0] == '\0')
136 modname = fname;
137 printf ("%s: %#" PRIx64 " .. %#" PRIx64 "\n", modname, start, end);
138
139 unsigned int indent = 0;
140 while (n-- > 0)
141 {
142 Dwarf_Die *const die = &scopes[n];
143
144 indent += INDENT;
145 printf ("%*s%s (%#x)", indent, "",
146 dwarf_diename (die) ?: "<unnamed>",
147 dwarf_tag (die));
148
149 Dwarf_Addr lowpc, highpc;
150 if (dwarf_lowpc (die, &lowpc) == 0
151 && dwarf_highpc (die, &highpc) == 0)
152 {
153 lowpc += a->dwbias;
154 highpc += a->dwbias;
155 Dwfl_Line *loline = dwfl_getsrc (a->dwfl, lowpc);
156 Dwfl_Line *hiline = dwfl_getsrc (a->dwfl, highpc - 1);
157 paddr (": ", lowpc, loline);
158 if (highpc != lowpc)
159 paddr (" .. ", highpc - 1, hiline == loline ? NULL : hiline);
160 }
161 puts ("");
162
163 print_vars (indent + INDENT, die);
164 }
165 free (scopes);
166 }
167
168 return 0;
169 }
170
171
172 int
main(int argc,char * argv[])173 main (int argc, char *argv[])
174 {
175 int remaining;
176
177 /* Set locale. */
178 (void) setlocale (LC_ALL, "");
179
180 struct args a = { .dwfl = NULL, .cu = NULL };
181
182 (void) argp_parse (dwfl_standard_argp (), argc, argv, 0, &remaining,
183 &a.dwfl);
184 assert (a.dwfl != NULL);
185 a.argv = &argv[remaining];
186
187 int result = 0;
188
189 while ((a.cu = dwfl_nextcu (a.dwfl, a.cu, &a.dwbias)) != NULL)
190 dwarf_getfuncs (a.cu, &handle_function, &a, 0);
191
192 dwfl_end (a.dwfl);
193
194 return result;
195 }
196