1 /* addr2line.c -- convert addresses to line number and function name
2 Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
3 Free Software Foundation, Inc.
4 Contributed by Ulrich Lauther <Ulrich.Lauther@mchp.siemens.de>
5
6 This file is part of GNU Binutils.
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
11 any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
21
22 /* Derived from objdump.c and nm.c by Ulrich.Lauther@mchp.siemens.de
23
24 Usage:
25 addr2line [options] addr addr ...
26 or
27 addr2line [options]
28
29 both forms write results to stdout, the second form reads addresses
30 to be converted from stdin. */
31
32 #include "config.h"
33 #include <string.h>
34
35 #include "bfd.h"
36 #include "getopt.h"
37 #include "libiberty.h"
38 #include "demangle.h"
39 #include "bucomm.h"
40 #include "budemang.h"
41
42 static bfd_boolean unwind_inlines; /* -i, unwind inlined functions. */
43 static bfd_boolean with_functions; /* -f, show function names. */
44 static bfd_boolean do_demangle; /* -C, demangle names. */
45 static bfd_boolean base_names; /* -s, strip directory names. */
46
47 static int naddr; /* Number of addresses to process. */
48 static char **addr; /* Hex addresses to process. */
49
50 static asymbol **syms; /* Symbol table. */
51
52 static struct option long_options[] =
53 {
54 {"basenames", no_argument, NULL, 's'},
55 {"demangle", optional_argument, NULL, 'C'},
56 {"exe", required_argument, NULL, 'e'},
57 {"functions", no_argument, NULL, 'f'},
58 {"inlines", no_argument, NULL, 'i'},
59 {"target", required_argument, NULL, 'b'},
60 {"help", no_argument, NULL, 'H'},
61 {"version", no_argument, NULL, 'V'},
62 {0, no_argument, 0, 0}
63 };
64
65 static void usage (FILE *, int);
66 static void slurp_symtab (bfd *);
67 static void find_address_in_section (bfd *, asection *, void *);
68 static void translate_addresses (bfd *);
69 static void process_file (const char *, const char *);
70
71 /* Print a usage message to STREAM and exit with STATUS. */
72
73 static void
usage(FILE * stream,int status)74 usage (FILE *stream, int status)
75 {
76 fprintf (stream, _("Usage: %s [option(s)] [addr(s)]\n"), program_name);
77 fprintf (stream, _(" Convert addresses into line number/file name pairs.\n"));
78 fprintf (stream, _(" If no addresses are specified on the command line, they will be read from stdin\n"));
79 fprintf (stream, _(" The options are:\n\
80 -b --target=<bfdname> Set the binary file format\n\
81 -e --exe=<executable> Set the input file name (default is a.out)\n\
82 -i --inlines Unwind inlined functions\n\
83 -s --basenames Strip directory names\n\
84 -f --functions Show function names\n\
85 -C --demangle[=style] Demangle function names\n\
86 -h --help Display this information\n\
87 -v --version Display the program's version\n\
88 \n"));
89
90 list_supported_targets (program_name, stream);
91 if (status == 0)
92 fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
93 exit (status);
94 }
95
96 /* Read in the symbol table. */
97
98 static void
slurp_symtab(bfd * abfd)99 slurp_symtab (bfd *abfd)
100 {
101 long symcount;
102 unsigned int size;
103
104 if ((bfd_get_file_flags (abfd) & HAS_SYMS) == 0)
105 return;
106
107 symcount = bfd_read_minisymbols (abfd, FALSE, (void *) &syms, &size);
108 if (symcount == 0)
109 symcount = bfd_read_minisymbols (abfd, TRUE /* dynamic */, (void *) &syms, &size);
110
111 if (symcount < 0)
112 bfd_fatal (bfd_get_filename (abfd));
113 }
114
115 /* These global variables are used to pass information between
116 translate_addresses and find_address_in_section. */
117
118 static bfd_vma pc;
119 static const char *filename;
120 static const char *functionname;
121 static unsigned int line;
122 static bfd_boolean found;
123
124 /* Look for an address in a section. This is called via
125 bfd_map_over_sections. */
126
127 static void
find_address_in_section(bfd * abfd,asection * section,void * data ATTRIBUTE_UNUSED)128 find_address_in_section (bfd *abfd, asection *section,
129 void *data ATTRIBUTE_UNUSED)
130 {
131 bfd_vma vma;
132 bfd_size_type size;
133
134 if (found)
135 return;
136
137 if ((bfd_get_section_flags (abfd, section) & SEC_ALLOC) == 0)
138 return;
139
140 vma = bfd_get_section_vma (abfd, section);
141 if (pc < vma)
142 return;
143
144 size = bfd_get_section_size (section);
145 if (pc >= vma + size)
146 return;
147
148 found = bfd_find_nearest_line (abfd, section, syms, pc - vma,
149 &filename, &functionname, &line);
150 }
151
152 /* Read hexadecimal addresses from stdin, translate into
153 file_name:line_number and optionally function name. */
154
155 static void
translate_addresses(bfd * abfd)156 translate_addresses (bfd *abfd)
157 {
158 int read_stdin = (naddr == 0);
159
160 for (;;)
161 {
162 if (read_stdin)
163 {
164 char addr_hex[100];
165
166 if (fgets (addr_hex, sizeof addr_hex, stdin) == NULL)
167 break;
168 pc = bfd_scan_vma (addr_hex, NULL, 16);
169 }
170 else
171 {
172 if (naddr <= 0)
173 break;
174 --naddr;
175 pc = bfd_scan_vma (*addr++, NULL, 16);
176 }
177
178 found = FALSE;
179 bfd_map_over_sections (abfd, find_address_in_section, NULL);
180
181 if (! found)
182 {
183 if (with_functions)
184 printf ("??\n");
185 printf ("??:0\n");
186 }
187 else
188 {
189 do {
190 if (with_functions)
191 {
192 const char *name;
193 char *alloc = NULL;
194
195 name = functionname;
196 if (name == NULL || *name == '\0')
197 name = "??";
198 else if (do_demangle)
199 {
200 alloc = demangle (abfd, name);
201 name = alloc;
202 }
203
204 printf ("%s\n", name);
205
206 if (alloc != NULL)
207 free (alloc);
208 }
209
210 if (base_names && filename != NULL)
211 {
212 char *h;
213
214 h = strrchr (filename, '/');
215 if (h != NULL)
216 filename = h + 1;
217 }
218
219 printf ("%s:%u\n", filename ? filename : "??", line);
220 if (!unwind_inlines)
221 found = FALSE;
222 else
223 found = bfd_find_inliner_info (abfd, &filename, &functionname, &line);
224 } while (found);
225
226 }
227
228 /* fflush() is essential for using this command as a server
229 child process that reads addresses from a pipe and responds
230 with line number information, processing one address at a
231 time. */
232 fflush (stdout);
233 }
234 }
235
236 /* Process a file. */
237
238 static void
process_file(const char * file_name,const char * target)239 process_file (const char *file_name, const char *target)
240 {
241 bfd *abfd;
242 char **matching;
243
244 if (get_file_size (file_name) < 1)
245 return;
246
247 abfd = bfd_openr (file_name, target);
248 if (abfd == NULL)
249 bfd_fatal (file_name);
250
251 if (bfd_check_format (abfd, bfd_archive))
252 fatal (_("%s: can not get addresses from archive"), file_name);
253
254 if (! bfd_check_format_matches (abfd, bfd_object, &matching))
255 {
256 bfd_nonfatal (bfd_get_filename (abfd));
257 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
258 {
259 list_matching_formats (matching);
260 free (matching);
261 }
262 xexit (1);
263 }
264
265 slurp_symtab (abfd);
266
267 translate_addresses (abfd);
268
269 if (syms != NULL)
270 {
271 free (syms);
272 syms = NULL;
273 }
274
275 bfd_close (abfd);
276 }
277
278 int main (int, char **);
279
280 int
main(int argc,char ** argv)281 main (int argc, char **argv)
282 {
283 const char *file_name;
284 char *target;
285 int c;
286
287 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
288 setlocale (LC_MESSAGES, "");
289 #endif
290 #if defined (HAVE_SETLOCALE)
291 setlocale (LC_CTYPE, "");
292 #endif
293 bindtextdomain (PACKAGE, LOCALEDIR);
294 textdomain (PACKAGE);
295
296 program_name = *argv;
297 xmalloc_set_program_name (program_name);
298
299 bfd_init ();
300 set_default_bfd_target ();
301
302 file_name = NULL;
303 target = NULL;
304 while ((c = getopt_long (argc, argv, "b:Ce:sfHhiVv", long_options, (int *) 0))
305 != EOF)
306 {
307 switch (c)
308 {
309 case 0:
310 break; /* We've been given a long option. */
311 case 'b':
312 target = optarg;
313 break;
314 case 'C':
315 do_demangle = TRUE;
316 if (optarg != NULL)
317 {
318 enum demangling_styles style;
319
320 style = cplus_demangle_name_to_style (optarg);
321 if (style == unknown_demangling)
322 fatal (_("unknown demangling style `%s'"),
323 optarg);
324
325 cplus_demangle_set_style (style);
326 }
327 break;
328 case 'e':
329 file_name = optarg;
330 break;
331 case 's':
332 base_names = TRUE;
333 break;
334 case 'f':
335 with_functions = TRUE;
336 break;
337 case 'v':
338 case 'V':
339 print_version ("addr2line");
340 break;
341 case 'h':
342 case 'H':
343 usage (stdout, 0);
344 break;
345 case 'i':
346 unwind_inlines = TRUE;
347 break;
348 default:
349 usage (stderr, 1);
350 break;
351 }
352 }
353
354 if (file_name == NULL)
355 file_name = "a.out";
356
357 addr = argv + optind;
358 naddr = argc - optind;
359
360 process_file (file_name, target);
361
362 return 0;
363 }
364