1 /* addr2line.c -- convert addresses to line number and function name
2 Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2006
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_addresses; /* -a, show addresses. */
44 static bfd_boolean with_functions; /* -f, show function names. */
45 static bfd_boolean do_demangle; /* -C, demangle names. */
46 static bfd_boolean base_names; /* -s, strip directory names. */
47
48 static int naddr; /* Number of addresses to process. */
49 static char **addr; /* Hex addresses to process. */
50
51 static asymbol **syms; /* Symbol table. */
52
53 static struct option long_options[] =
54 {
55 {"addresses", no_argument, NULL, 'a'},
56 {"basenames", no_argument, NULL, 's'},
57 {"demangle", optional_argument, NULL, 'C'},
58 {"exe", required_argument, NULL, 'e'},
59 {"functions", no_argument, NULL, 'f'},
60 {"inlines", no_argument, NULL, 'i'},
61 {"section", required_argument, NULL, 'j'},
62 {"target", required_argument, NULL, 'b'},
63 {"help", no_argument, NULL, 'H'},
64 {"version", no_argument, NULL, 'V'},
65 {0, no_argument, 0, 0}
66 };
67
68 static void usage (FILE *, int);
69 static void slurp_symtab (bfd *);
70 static void find_address_in_section (bfd *, asection *, void *);
71 static void find_offset_in_section (bfd *, asection *);
72 static void translate_addresses (bfd *, asection *);
73 static void process_file (const char *, const char *, const char *);
74
75 /* Print a usage message to STREAM and exit with STATUS. */
76
77 static void
usage(FILE * stream,int status)78 usage (FILE *stream, int status)
79 {
80 fprintf (stream, _("Usage: %s [option(s)] [addr(s)]\n"), program_name);
81 fprintf (stream, _(" Convert addresses into line number/file name pairs.\n"));
82 fprintf (stream, _(" If no addresses are specified on the command line, they will be read from stdin\n"));
83 fprintf (stream, _(" The options are:\n\
84 @<file> Read options from <file>\n\
85 -a --addresses Show addresses\n\
86 -b --target=<bfdname> Set the binary file format\n\
87 -e --exe=<executable> Set the input file name (default is a.out)\n\
88 -i --inlines Unwind inlined functions\n\
89 -j --section=<name> Read section-relative offsets instead of addresses\n\
90 -s --basenames Strip directory names\n\
91 -f --functions Show function names\n\
92 -C --demangle[=style] Demangle function names\n\
93 -h --help Display this information\n\
94 -v --version Display the program's version\n\
95 \n"));
96
97 list_supported_targets (program_name, stream);
98 if (status == 0)
99 fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
100 exit (status);
101 }
102
103 /* Read in the symbol table. */
104
105 static void
slurp_symtab(bfd * abfd)106 slurp_symtab (bfd *abfd)
107 {
108 long symcount;
109 unsigned int size;
110
111 if ((bfd_get_file_flags (abfd) & HAS_SYMS) == 0)
112 return;
113
114 symcount = bfd_read_minisymbols (abfd, FALSE, (void *) &syms, &size);
115 if (symcount == 0)
116 symcount = bfd_read_minisymbols (abfd, TRUE /* dynamic */, (void *) &syms, &size);
117
118 if (symcount < 0)
119 bfd_fatal (bfd_get_filename (abfd));
120 }
121
122 /* These global variables are used to pass information between
123 translate_addresses and find_address_in_section. */
124
125 static bfd_vma pc;
126 static const char *filename;
127 static const char *functionname;
128 static unsigned int line;
129 static bfd_boolean found;
130
131 /* Look for an address in a section. This is called via
132 bfd_map_over_sections. */
133
134 static void
find_address_in_section(bfd * abfd,asection * section,void * data ATTRIBUTE_UNUSED)135 find_address_in_section (bfd *abfd, asection *section,
136 void *data ATTRIBUTE_UNUSED)
137 {
138 bfd_vma vma;
139 bfd_size_type size;
140
141 if (found)
142 return;
143
144 if ((bfd_get_section_flags (abfd, section) & SEC_ALLOC) == 0)
145 return;
146
147 vma = bfd_get_section_vma (abfd, section);
148 if (pc < vma)
149 return;
150
151 size = bfd_get_section_size (section);
152 if (pc >= vma + size)
153 return;
154
155 found = bfd_find_nearest_line (abfd, section, syms, pc - vma,
156 &filename, &functionname, &line);
157 }
158
159 /* Look for an offset in a section. This is directly called. */
160
161 static void
find_offset_in_section(bfd * abfd,asection * section)162 find_offset_in_section (bfd *abfd, asection *section)
163 {
164 bfd_size_type size;
165
166 if (found)
167 return;
168
169 if ((bfd_get_section_flags (abfd, section) & SEC_ALLOC) == 0)
170 return;
171
172 size = bfd_get_section_size (section);
173 if (pc >= size)
174 return;
175
176 found = bfd_find_nearest_line (abfd, section, syms, pc,
177 &filename, &functionname, &line);
178 }
179
180 /* Read hexadecimal addresses from stdin, translate into
181 file_name:line_number and optionally function name. */
182
183 static void
translate_addresses(bfd * abfd,asection * section)184 translate_addresses (bfd *abfd, asection *section)
185 {
186 int read_stdin = (naddr == 0);
187
188 for (;;)
189 {
190 if (read_stdin)
191 {
192 char addr_hex[100];
193
194 if (fgets (addr_hex, sizeof addr_hex, stdin) == NULL)
195 break;
196 pc = bfd_scan_vma (addr_hex, NULL, 16);
197 }
198 else
199 {
200 if (naddr <= 0)
201 break;
202 --naddr;
203 pc = bfd_scan_vma (*addr++, NULL, 16);
204 }
205
206 if (with_addresses)
207 {
208 printf ("0x");
209 bfd_printf_vma (abfd, pc);
210 printf ("\n");
211 }
212
213 found = FALSE;
214 if (section)
215 find_offset_in_section (abfd, section);
216 else
217 bfd_map_over_sections (abfd, find_address_in_section, NULL);
218
219 if (! found)
220 {
221 if (with_functions)
222 printf ("??\n");
223 printf ("??:0\n");
224 }
225 else
226 {
227 do {
228 if (with_functions)
229 {
230 const char *name;
231 char *alloc = NULL;
232
233 name = functionname;
234 if (name == NULL || *name == '\0')
235 name = "??";
236 else if (do_demangle)
237 {
238 alloc = demangle (abfd, name);
239 name = alloc;
240 }
241
242 printf ("%s\n", name);
243
244 if (alloc != NULL)
245 free (alloc);
246 }
247
248 if (base_names && filename != NULL)
249 {
250 char *h;
251
252 h = strrchr (filename, '/');
253 if (h != NULL)
254 filename = h + 1;
255 }
256
257 printf ("%s:%u\n", filename ? filename : "??", line);
258 if (!unwind_inlines)
259 found = FALSE;
260 else
261 found = bfd_find_inliner_info (abfd, &filename, &functionname, &line);
262 } while (found);
263
264 }
265
266 /* fflush() is essential for using this command as a server
267 child process that reads addresses from a pipe and responds
268 with line number information, processing one address at a
269 time. */
270 fflush (stdout);
271 }
272 }
273
274 /* Process a file. */
275
276 static void
process_file(const char * file_name,const char * section_name,const char * target)277 process_file (const char *file_name, const char *section_name,
278 const char *target)
279 {
280 bfd *abfd;
281 asection *section;
282 char **matching;
283
284 if (get_file_size (file_name) < 1)
285 return;
286
287 abfd = bfd_openr (file_name, target);
288 if (abfd == NULL)
289 bfd_fatal (file_name);
290
291 if (bfd_check_format (abfd, bfd_archive))
292 fatal (_("%s: cannot get addresses from archive"), file_name);
293
294 if (! bfd_check_format_matches (abfd, bfd_object, &matching))
295 {
296 bfd_nonfatal (bfd_get_filename (abfd));
297 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
298 {
299 list_matching_formats (matching);
300 free (matching);
301 }
302 xexit (1);
303 }
304
305 if (section_name != NULL)
306 {
307 section = bfd_get_section_by_name (abfd, section_name);
308 if (section == NULL)
309 fatal (_("%s: cannot find section %s"), file_name, section_name);
310 }
311 else
312 section = NULL;
313
314 slurp_symtab (abfd);
315
316 translate_addresses (abfd, section);
317
318 if (syms != NULL)
319 {
320 free (syms);
321 syms = NULL;
322 }
323
324 bfd_close (abfd);
325 }
326
327 int
main(int argc,char ** argv)328 main (int argc, char **argv)
329 {
330 const char *file_name;
331 const char *section_name;
332 char *target;
333 int c;
334
335 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
336 setlocale (LC_MESSAGES, "");
337 #endif
338 #if defined (HAVE_SETLOCALE)
339 setlocale (LC_CTYPE, "");
340 #endif
341 bindtextdomain (PACKAGE, LOCALEDIR);
342 textdomain (PACKAGE);
343
344 if (pledge ("stdio rpath", NULL) == -1)
345 fatal (_("Failed to pledge"));
346
347 program_name = *argv;
348 xmalloc_set_program_name (program_name);
349
350 expandargv (&argc, &argv);
351
352 bfd_init ();
353 set_default_bfd_target ();
354
355 file_name = NULL;
356 section_name = NULL;
357 target = NULL;
358 while ((c = getopt_long (argc, argv, "ab:Ce:sfHhij:Vv", long_options, (int *) 0))
359 != EOF)
360 {
361 switch (c)
362 {
363 case 0:
364 break; /* We've been given a long option. */
365 case 'a':
366 with_addresses = TRUE;
367 break;
368 case 'b':
369 target = optarg;
370 break;
371 case 'C':
372 do_demangle = TRUE;
373 if (optarg != NULL)
374 {
375 enum demangling_styles style;
376
377 style = cplus_demangle_name_to_style (optarg);
378 if (style == unknown_demangling)
379 fatal (_("unknown demangling style `%s'"),
380 optarg);
381
382 cplus_demangle_set_style (style);
383 }
384 break;
385 case 'e':
386 file_name = optarg;
387 break;
388 case 's':
389 base_names = TRUE;
390 break;
391 case 'f':
392 with_functions = TRUE;
393 break;
394 case 'v':
395 case 'V':
396 print_version ("addr2line");
397 break;
398 case 'h':
399 case 'H':
400 usage (stdout, 0);
401 break;
402 case 'i':
403 unwind_inlines = TRUE;
404 break;
405 case 'j':
406 section_name = optarg;
407 break;
408 default:
409 usage (stderr, 1);
410 break;
411 }
412 }
413
414 if (file_name == NULL)
415 file_name = "a.out";
416
417 addr = argv + optind;
418 naddr = argc - optind;
419
420 process_file (file_name, section_name, target);
421
422 return 0;
423 }
424