1 /* addr2line.c -- convert addresses to line number and function name
2 Copyright (C) 1997-2019 Free Software Foundation, Inc.
3 Contributed by Ulrich Lauther <Ulrich.Lauther@mchp.siemens.de>
5 This file is part of GNU Binutils.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
23 /* Derived from objdump.c and nm.c by Ulrich.Lauther@mchp.siemens.de
26 addr2line [options] addr addr ...
30 both forms write results to stdout, the second form reads addresses
31 to be converted from stdin. */
36 #include "libiberty.h"
41 static bfd_boolean unwind_inlines; /* -i, unwind inlined functions. */
42 static bfd_boolean with_addresses; /* -a, show addresses. */
43 static bfd_boolean with_functions; /* -f, show function names. */
44 static bfd_boolean do_demangle; /* -C, demangle names. */
45 static bfd_boolean pretty_print; /* -p, print on one line. */
46 static bfd_boolean base_names; /* -s, strip directory names. */
48 /* Flags passed to the name demangler. */
49 static int demangle_flags = DMGL_PARAMS | DMGL_ANSI;
51 static int naddr; /* Number of addresses to process. */
52 static char **addr; /* Hex addresses to process. */
54 static asymbol **syms; /* Symbol table. */
56 static struct option long_options[] =
58 {"addresses", no_argument, NULL, 'a'},
59 {"basenames", no_argument, NULL, 's'},
60 {"demangle", optional_argument, NULL, 'C'},
61 {"exe", required_argument, NULL, 'e'},
62 {"functions", no_argument, NULL, 'f'},
63 {"inlines", no_argument, NULL, 'i'},
64 {"pretty-print", no_argument, NULL, 'p'},
65 {"recurse-limit", no_argument, NULL, 'R'},
66 {"recursion-limit", no_argument, NULL, 'R'},
67 {"no-recurse-limit", no_argument, NULL, 'r'},
68 {"no-recursion-limit", no_argument, NULL, 'r'},
69 {"section", required_argument, NULL, 'j'},
70 {"target", required_argument, NULL, 'b'},
71 {"help", no_argument, NULL, 'H'},
72 {"version", no_argument, NULL, 'V'},
73 {0, no_argument, 0, 0}
76 static void usage (FILE *, int);
77 static void slurp_symtab (bfd *);
78 static void find_address_in_section (bfd *, asection *, void *);
79 static void find_offset_in_section (bfd *, asection *);
80 static void translate_addresses (bfd *, asection *);
82 /* Print a usage message to STREAM and exit with STATUS. */
85 usage (FILE *stream, int status)
87 fprintf (stream, _("Usage: %s [option(s)] [addr(s)]\n"), program_name);
88 fprintf (stream, _(" Convert addresses into line number/file name pairs.\n"));
89 fprintf (stream, _(" If no addresses are specified on the command line, they will be read from stdin\n"));
90 fprintf (stream, _(" The options are:\n\
91 @<file> Read options from <file>\n\
92 -a --addresses Show addresses\n\
93 -b --target=<bfdname> Set the binary file format\n\
94 -e --exe=<executable> Set the input file name (default is a.out)\n\
95 -i --inlines Unwind inlined functions\n\
96 -j --section=<name> Read section-relative offsets instead of addresses\n\
97 -p --pretty-print Make the output easier to read for humans\n\
98 -s --basenames Strip directory names\n\
99 -f --functions Show function names\n\
100 -C --demangle[=style] Demangle function names\n\
101 -R --recurse-limit Enable a limit on recursion whilst demangling. [Default]\n\
102 -r --no-recurse-limit Disable a limit on recursion whilst demangling\n\
103 -h --help Display this information\n\
104 -v --version Display the program's version\n\
107 list_supported_targets (program_name, stream);
108 if (REPORT_BUGS_TO[0] && status == 0)
109 fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
113 /* Read in the symbol table. */
116 slurp_symtab (bfd *abfd)
120 bfd_boolean dynamic = FALSE;
122 if ((bfd_get_file_flags (abfd) & HAS_SYMS) == 0)
125 storage = bfd_get_symtab_upper_bound (abfd);
128 storage = bfd_get_dynamic_symtab_upper_bound (abfd);
132 bfd_fatal (bfd_get_filename (abfd));
134 syms = (asymbol **) xmalloc (storage);
136 symcount = bfd_canonicalize_dynamic_symtab (abfd, syms);
138 symcount = bfd_canonicalize_symtab (abfd, syms);
140 bfd_fatal (bfd_get_filename (abfd));
142 /* If there are no symbols left after canonicalization and
143 we have not tried the dynamic symbols then give them a go. */
146 && (storage = bfd_get_dynamic_symtab_upper_bound (abfd)) > 0)
149 syms = xmalloc (storage);
150 symcount = bfd_canonicalize_dynamic_symtab (abfd, syms);
153 /* PR 17512: file: 2a1d3b5b.
154 Do not pretend that we have some symbols when we don't. */
162 /* These global variables are used to pass information between
163 translate_addresses and find_address_in_section. */
166 static const char *filename;
167 static const char *functionname;
168 static unsigned int line;
169 static unsigned int discriminator;
170 static bfd_boolean found;
172 /* Look for an address in a section. This is called via
173 bfd_map_over_sections. */
176 find_address_in_section (bfd *abfd, asection *section,
177 void *data ATTRIBUTE_UNUSED)
185 if ((bfd_get_section_flags (abfd, section) & SEC_ALLOC) == 0)
188 vma = bfd_get_section_vma (abfd, section);
192 size = bfd_get_section_size (section);
193 if (pc >= vma + size)
196 found = bfd_find_nearest_line_discriminator (abfd, section, syms, pc - vma,
197 &filename, &functionname,
198 &line, &discriminator);
201 /* Look for an offset in a section. This is directly called. */
204 find_offset_in_section (bfd *abfd, asection *section)
211 if ((bfd_get_section_flags (abfd, section) & SEC_ALLOC) == 0)
214 size = bfd_get_section_size (section);
218 found = bfd_find_nearest_line_discriminator (abfd, section, syms, pc,
219 &filename, &functionname,
220 &line, &discriminator);
223 /* Read hexadecimal addresses from stdin, translate into
224 file_name:line_number and optionally function name. */
227 translate_addresses (bfd *abfd, asection *section)
229 int read_stdin = (naddr == 0);
237 if (fgets (addr_hex, sizeof addr_hex, stdin) == NULL)
239 pc = bfd_scan_vma (addr_hex, NULL, 16);
246 pc = bfd_scan_vma (*addr++, NULL, 16);
249 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
251 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
252 bfd_vma sign = (bfd_vma) 1 << (bed->s->arch_size - 1);
254 pc &= (sign << 1) - 1;
255 if (bed->sign_extend_vma)
256 pc = (pc ^ sign) - sign;
262 bfd_printf_vma (abfd, pc);
272 find_offset_in_section (abfd, section);
274 bfd_map_over_sections (abfd, find_address_in_section, NULL);
297 if (name == NULL || *name == '\0')
299 else if (do_demangle)
301 alloc = bfd_demangle (abfd, name, demangle_flags);
308 /* Note for translators: This printf is used to join the
309 function name just printed above to the line number/
310 file name pair that is about to be printed below. Eg:
321 if (base_names && filename != NULL)
325 h = strrchr (filename, '/');
330 printf ("%s:", filename ? filename : "??");
333 if (discriminator != 0)
334 printf ("%u (discriminator %u)\n", line, discriminator);
336 printf ("%u\n", line);
343 found = bfd_find_inliner_info (abfd, &filename, &functionname,
348 /* Note for translators: This printf is used to join the
349 line number/file name pair that has just been printed with
350 the line number/file name pair that is going to be printed
351 by the next iteration of the while loop. Eg:
353 123:bar.c (inlined by) 456:main.c */
354 printf (_(" (inlined by) "));
358 /* fflush() is essential for using this command as a server
359 child process that reads addresses from a pipe and responds
360 with line number information, processing one address at a
366 /* Process a file. Returns an exit value for main(). */
369 process_file (const char *file_name, const char *section_name,
376 if (get_file_size (file_name) < 1)
379 abfd = bfd_openr (file_name, target);
381 bfd_fatal (file_name);
383 /* Decompress sections. */
384 abfd->flags |= BFD_DECOMPRESS;
386 if (bfd_check_format (abfd, bfd_archive))
387 fatal (_("%s: cannot get addresses from archive"), file_name);
389 if (! bfd_check_format_matches (abfd, bfd_object, &matching))
391 bfd_nonfatal (bfd_get_filename (abfd));
392 if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
394 list_matching_formats (matching);
400 if (section_name != NULL)
402 section = bfd_get_section_by_name (abfd, section_name);
404 fatal (_("%s: cannot find section %s"), file_name, section_name);
411 translate_addresses (abfd, section);
425 main (int argc, char **argv)
427 const char *file_name;
428 const char *section_name;
432 #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
433 setlocale (LC_MESSAGES, "");
435 #if defined (HAVE_SETLOCALE)
436 setlocale (LC_CTYPE, "");
438 bindtextdomain (PACKAGE, LOCALEDIR);
439 textdomain (PACKAGE);
441 program_name = *argv;
442 xmalloc_set_program_name (program_name);
443 bfd_set_error_program_name (program_name);
445 expandargv (&argc, &argv);
447 if (bfd_init () != BFD_INIT_MAGIC)
448 fatal (_("fatal error: libbfd ABI mismatch"));
449 set_default_bfd_target ();
454 while ((c = getopt_long (argc, argv, "ab:Ce:rRsfHhij:pVv", long_options, (int *) 0))
460 break; /* We've been given a long option. */
462 with_addresses = TRUE;
471 enum demangling_styles style;
473 style = cplus_demangle_name_to_style (optarg);
474 if (style == unknown_demangling)
475 fatal (_("unknown demangling style `%s'"),
478 cplus_demangle_set_style (style);
482 demangle_flags |= DMGL_NO_RECURSE_LIMIT;
485 demangle_flags &= ~ DMGL_NO_RECURSE_LIMIT;
494 with_functions = TRUE;
501 print_version ("addr2line");
508 unwind_inlines = TRUE;
511 section_name = optarg;
519 if (file_name == NULL)
522 addr = argv + optind;
523 naddr = argc - optind;
525 return process_file (file_name, section_name, target);