| /* addr2line.c -- convert addresses to line number and function name |
| Copyright (C) 1997-2021 Free Software Foundation, Inc. |
| Contributed by Ulrich Lauther <Ulrich.Lauther@mchp.siemens.de> |
| |
| This file is part of GNU Binutils. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3, or (at your option) |
| any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, 51 Franklin Street - Fifth Floor, Boston, |
| MA 02110-1301, USA. */ |
| |
| |
| /* Derived from objdump.c and nm.c by Ulrich.Lauther@mchp.siemens.de |
| |
| Usage: |
| addr2line [options] addr addr ... |
| or |
| addr2line [options] |
| |
| both forms write results to stdout, the second form reads addresses |
| to be converted from stdin. */ |
| |
| #include "sysdep.h" |
| #include "bfd.h" |
| #include "getopt.h" |
| #include "libiberty.h" |
| #include "demangle.h" |
| #include "bucomm.h" |
| #include "elf-bfd.h" |
| |
| static bool unwind_inlines; /* -i, unwind inlined functions. */ |
| static bool with_addresses; /* -a, show addresses. */ |
| static bool with_functions; /* -f, show function names. */ |
| static bool do_demangle; /* -C, demangle names. */ |
| static bool pretty_print; /* -p, print on one line. */ |
| static bool base_names; /* -s, strip directory names. */ |
| |
| /* Flags passed to the name demangler. */ |
| static int demangle_flags = DMGL_PARAMS | DMGL_ANSI; |
| |
| static int naddr; /* Number of addresses to process. */ |
| static char **addr; /* Hex addresses to process. */ |
| |
| static asymbol **syms; /* Symbol table. */ |
| |
| static struct option long_options[] = |
| { |
| {"addresses", no_argument, NULL, 'a'}, |
| {"basenames", no_argument, NULL, 's'}, |
| {"demangle", optional_argument, NULL, 'C'}, |
| {"exe", required_argument, NULL, 'e'}, |
| {"functions", no_argument, NULL, 'f'}, |
| {"inlines", no_argument, NULL, 'i'}, |
| {"pretty-print", no_argument, NULL, 'p'}, |
| {"recurse-limit", no_argument, NULL, 'R'}, |
| {"recursion-limit", no_argument, NULL, 'R'}, |
| {"no-recurse-limit", no_argument, NULL, 'r'}, |
| {"no-recursion-limit", no_argument, NULL, 'r'}, |
| {"section", required_argument, NULL, 'j'}, |
| {"target", required_argument, NULL, 'b'}, |
| {"help", no_argument, NULL, 'H'}, |
| {"version", no_argument, NULL, 'V'}, |
| {0, no_argument, 0, 0} |
| }; |
| |
| static void usage (FILE *, int); |
| static void slurp_symtab (bfd *); |
| static void find_address_in_section (bfd *, asection *, void *); |
| static void find_offset_in_section (bfd *, asection *); |
| static void translate_addresses (bfd *, asection *); |
| |
| /* Print a usage message to STREAM and exit with STATUS. */ |
| |
| static void |
| usage (FILE *stream, int status) |
| { |
| fprintf (stream, _("Usage: %s [option(s)] [addr(s)]\n"), program_name); |
| fprintf (stream, _(" Convert addresses into line number/file name pairs.\n")); |
| fprintf (stream, _(" If no addresses are specified on the command line, they will be read from stdin\n")); |
| fprintf (stream, _(" The options are:\n\ |
| @<file> Read options from <file>\n\ |
| -a --addresses Show addresses\n\ |
| -b --target=<bfdname> Set the binary file format\n\ |
| -e --exe=<executable> Set the input file name (default is a.out)\n\ |
| -i --inlines Unwind inlined functions\n\ |
| -j --section=<name> Read section-relative offsets instead of addresses\n\ |
| -p --pretty-print Make the output easier to read for humans\n\ |
| -s --basenames Strip directory names\n\ |
| -f --functions Show function names\n\ |
| -C --demangle[=style] Demangle function names\n\ |
| -R --recurse-limit Enable a limit on recursion whilst demangling. [Default]\n\ |
| -r --no-recurse-limit Disable a limit on recursion whilst demangling\n\ |
| -h --help Display this information\n\ |
| -v --version Display the program's version\n\ |
| \n")); |
| |
| list_supported_targets (program_name, stream); |
| if (REPORT_BUGS_TO[0] && status == 0) |
| fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO); |
| exit (status); |
| } |
| |
| /* Read in the symbol table. */ |
| |
| static void |
| slurp_symtab (bfd *abfd) |
| { |
| long storage; |
| long symcount; |
| bool dynamic = false; |
| |
| if ((bfd_get_file_flags (abfd) & HAS_SYMS) == 0) |
| return; |
| |
| storage = bfd_get_symtab_upper_bound (abfd); |
| if (storage == 0) |
| { |
| storage = bfd_get_dynamic_symtab_upper_bound (abfd); |
| dynamic = true; |
| } |
| if (storage < 0) |
| bfd_fatal (bfd_get_filename (abfd)); |
| |
| syms = (asymbol **) xmalloc (storage); |
| if (dynamic) |
| symcount = bfd_canonicalize_dynamic_symtab (abfd, syms); |
| else |
| symcount = bfd_canonicalize_symtab (abfd, syms); |
| if (symcount < 0) |
| bfd_fatal (bfd_get_filename (abfd)); |
| |
| /* If there are no symbols left after canonicalization and |
| we have not tried the dynamic symbols then give them a go. */ |
| if (symcount == 0 |
| && ! dynamic |
| && (storage = bfd_get_dynamic_symtab_upper_bound (abfd)) > 0) |
| { |
| free (syms); |
| syms = xmalloc (storage); |
| symcount = bfd_canonicalize_dynamic_symtab (abfd, syms); |
| } |
| |
| /* PR 17512: file: 2a1d3b5b. |
| Do not pretend that we have some symbols when we don't. */ |
| if (symcount <= 0) |
| { |
| free (syms); |
| syms = NULL; |
| } |
| } |
| |
| /* These global variables are used to pass information between |
| translate_addresses and find_address_in_section. */ |
| |
| static bfd_vma pc; |
| static const char *filename; |
| static const char *functionname; |
| static unsigned int line; |
| static unsigned int discriminator; |
| static bool found; |
| |
| /* Look for an address in a section. This is called via |
| bfd_map_over_sections. */ |
| |
| static void |
| find_address_in_section (bfd *abfd, asection *section, |
| void *data ATTRIBUTE_UNUSED) |
| { |
| bfd_vma vma; |
| bfd_size_type size; |
| |
| if (found) |
| return; |
| |
| if ((bfd_section_flags (section) & SEC_ALLOC) == 0) |
| return; |
| |
| vma = bfd_section_vma (section); |
| if (pc < vma) |
| return; |
| |
| size = bfd_section_size (section); |
| if (pc >= vma + size) |
| return; |
| |
| found = bfd_find_nearest_line_discriminator (abfd, section, syms, pc - vma, |
| &filename, &functionname, |
| &line, &discriminator); |
| } |
| |
| /* Look for an offset in a section. This is directly called. */ |
| |
| static void |
| find_offset_in_section (bfd *abfd, asection *section) |
| { |
| bfd_size_type size; |
| |
| if (found) |
| return; |
| |
| if ((bfd_section_flags (section) & SEC_ALLOC) == 0) |
| return; |
| |
| size = bfd_section_size (section); |
| if (pc >= size) |
| return; |
| |
| found = bfd_find_nearest_line_discriminator (abfd, section, syms, pc, |
| &filename, &functionname, |
| &line, &discriminator); |
| } |
| |
| /* Read hexadecimal addresses from stdin, translate into |
| file_name:line_number and optionally function name. */ |
| |
| static void |
| translate_addresses (bfd *abfd, asection *section) |
| { |
| int read_stdin = (naddr == 0); |
| |
| for (;;) |
| { |
| if (read_stdin) |
| { |
| char addr_hex[100]; |
| |
| if (fgets (addr_hex, sizeof addr_hex, stdin) == NULL) |
| break; |
| pc = bfd_scan_vma (addr_hex, NULL, 16); |
| } |
| else |
| { |
| if (naddr <= 0) |
| break; |
| --naddr; |
| pc = bfd_scan_vma (*addr++, NULL, 16); |
| } |
| |
| if (bfd_get_flavour (abfd) == bfd_target_elf_flavour) |
| { |
| const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
| bfd_vma sign = (bfd_vma) 1 << (bed->s->arch_size - 1); |
| |
| pc &= (sign << 1) - 1; |
| if (bed->sign_extend_vma) |
| pc = (pc ^ sign) - sign; |
| } |
| |
| if (with_addresses) |
| { |
| printf ("0x"); |
| bfd_printf_vma (abfd, pc); |
| |
| if (pretty_print) |
| printf (": "); |
| else |
| printf ("\n"); |
| } |
| |
| found = false; |
| if (section) |
| find_offset_in_section (abfd, section); |
| else |
| bfd_map_over_sections (abfd, find_address_in_section, NULL); |
| |
| if (! found) |
| { |
| if (with_functions) |
| { |
| if (pretty_print) |
| printf ("?? "); |
| else |
| printf ("??\n"); |
| } |
| printf ("??:0\n"); |
| } |
| else |
| { |
| while (1) |
| { |
| if (with_functions) |
| { |
| const char *name; |
| char *alloc = NULL; |
| |
| name = functionname; |
| if (name == NULL || *name == '\0') |
| name = "??"; |
| else if (do_demangle) |
| { |
| alloc = bfd_demangle (abfd, name, demangle_flags); |
| if (alloc != NULL) |
| name = alloc; |
| } |
| |
| printf ("%s", name); |
| if (pretty_print) |
| /* Note for translators: This printf is used to join the |
| function name just printed above to the line number/ |
| file name pair that is about to be printed below. Eg: |
| |
| foo at 123:bar.c */ |
| printf (_(" at ")); |
| else |
| printf ("\n"); |
| |
| free (alloc); |
| } |
| |
| if (base_names && filename != NULL) |
| { |
| char *h; |
| |
| h = strrchr (filename, '/'); |
| if (h != NULL) |
| filename = h + 1; |
| } |
| |
| printf ("%s:", filename ? filename : "??"); |
| if (line != 0) |
| { |
| if (discriminator != 0) |
| printf ("%u (discriminator %u)\n", line, discriminator); |
| else |
| printf ("%u\n", line); |
| } |
| else |
| printf ("?\n"); |
| if (!unwind_inlines) |
| found = false; |
| else |
| found = bfd_find_inliner_info (abfd, &filename, &functionname, |
| &line); |
| if (! found) |
| break; |
| if (pretty_print) |
| /* Note for translators: This printf is used to join the |
| line number/file name pair that has just been printed with |
| the line number/file name pair that is going to be printed |
| by the next iteration of the while loop. Eg: |
| |
| 123:bar.c (inlined by) 456:main.c */ |
| printf (_(" (inlined by) ")); |
| } |
| } |
| |
| /* fflush() is essential for using this command as a server |
| child process that reads addresses from a pipe and responds |
| with line number information, processing one address at a |
| time. */ |
| fflush (stdout); |
| } |
| } |
| |
| /* Process a file. Returns an exit value for main(). */ |
| |
| static int |
| process_file (const char *file_name, const char *section_name, |
| const char *target) |
| { |
| bfd *abfd; |
| asection *section; |
| char **matching; |
| |
| if (get_file_size (file_name) < 1) |
| return 1; |
| |
| abfd = bfd_openr (file_name, target); |
| if (abfd == NULL) |
| bfd_fatal (file_name); |
| |
| /* Decompress sections. */ |
| abfd->flags |= BFD_DECOMPRESS; |
| |
| if (bfd_check_format (abfd, bfd_archive)) |
| fatal (_("%s: cannot get addresses from archive"), file_name); |
| |
| if (! bfd_check_format_matches (abfd, bfd_object, &matching)) |
| { |
| bfd_nonfatal (bfd_get_filename (abfd)); |
| if (bfd_get_error () == bfd_error_file_ambiguously_recognized) |
| { |
| list_matching_formats (matching); |
| free (matching); |
| } |
| xexit (1); |
| } |
| |
| if (section_name != NULL) |
| { |
| section = bfd_get_section_by_name (abfd, section_name); |
| if (section == NULL) |
| fatal (_("%s: cannot find section %s"), file_name, section_name); |
| } |
| else |
| section = NULL; |
| |
| slurp_symtab (abfd); |
| |
| translate_addresses (abfd, section); |
| |
| free (syms); |
| syms = NULL; |
| |
| bfd_close (abfd); |
| |
| return 0; |
| } |
| |
| int |
| main (int argc, char **argv) |
| { |
| const char *file_name; |
| const char *section_name; |
| char *target; |
| int c; |
| |
| #ifdef HAVE_LC_MESSAGES |
| setlocale (LC_MESSAGES, ""); |
| #endif |
| setlocale (LC_CTYPE, ""); |
| bindtextdomain (PACKAGE, LOCALEDIR); |
| textdomain (PACKAGE); |
| |
| program_name = *argv; |
| xmalloc_set_program_name (program_name); |
| bfd_set_error_program_name (program_name); |
| |
| expandargv (&argc, &argv); |
| |
| if (bfd_init () != BFD_INIT_MAGIC) |
| fatal (_("fatal error: libbfd ABI mismatch")); |
| set_default_bfd_target (); |
| |
| file_name = NULL; |
| section_name = NULL; |
| target = NULL; |
| while ((c = getopt_long (argc, argv, "ab:Ce:rRsfHhij:pVv", long_options, (int *) 0)) |
| != EOF) |
| { |
| switch (c) |
| { |
| case 0: |
| break; /* We've been given a long option. */ |
| case 'a': |
| with_addresses = true; |
| break; |
| case 'b': |
| target = optarg; |
| break; |
| case 'C': |
| do_demangle = true; |
| if (optarg != NULL) |
| { |
| enum demangling_styles style; |
| |
| style = cplus_demangle_name_to_style (optarg); |
| if (style == unknown_demangling) |
| fatal (_("unknown demangling style `%s'"), |
| optarg); |
| |
| cplus_demangle_set_style (style); |
| } |
| break; |
| case 'r': |
| demangle_flags |= DMGL_NO_RECURSE_LIMIT; |
| break; |
| case 'R': |
| demangle_flags &= ~ DMGL_NO_RECURSE_LIMIT; |
| break; |
| case 'e': |
| file_name = optarg; |
| break; |
| case 's': |
| base_names = true; |
| break; |
| case 'f': |
| with_functions = true; |
| break; |
| case 'p': |
| pretty_print = true; |
| break; |
| case 'v': |
| case 'V': |
| print_version ("addr2line"); |
| break; |
| case 'h': |
| case 'H': |
| usage (stdout, 0); |
| break; |
| case 'i': |
| unwind_inlines = true; |
| break; |
| case 'j': |
| section_name = optarg; |
| break; |
| default: |
| usage (stderr, 1); |
| break; |
| } |
| } |
| |
| if (file_name == NULL) |
| file_name = "a.out"; |
| |
| addr = argv + optind; |
| naddr = argc - optind; |
| |
| return process_file (file_name, section_name, target); |
| } |
