511 lines
13 KiB
C
511 lines
13 KiB
C
/* addr2line.c -- convert addresses to line number and function name
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Copyright (C) 1997-2015 Free Software Foundation, Inc.
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Contributed by Ulrich Lauther <Ulrich.Lauther@mchp.siemens.de>
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This file is part of GNU Binutils.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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/* Derived from objdump.c and nm.c by Ulrich.Lauther@mchp.siemens.de
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Usage:
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addr2line [options] addr addr ...
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or
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addr2line [options]
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both forms write results to stdout, the second form reads addresses
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to be converted from stdin. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "getopt.h"
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#include "libiberty.h"
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#include "demangle.h"
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#include "bucomm.h"
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#include "elf-bfd.h"
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static bfd_boolean unwind_inlines; /* -i, unwind inlined functions. */
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static bfd_boolean with_addresses; /* -a, show addresses. */
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static bfd_boolean with_functions; /* -f, show function names. */
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static bfd_boolean do_demangle; /* -C, demangle names. */
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static bfd_boolean pretty_print; /* -p, print on one line. */
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static bfd_boolean base_names; /* -s, strip directory names. */
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static int naddr; /* Number of addresses to process. */
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static char **addr; /* Hex addresses to process. */
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static asymbol **syms; /* Symbol table. */
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static struct option long_options[] =
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{
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{"addresses", no_argument, NULL, 'a'},
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{"basenames", no_argument, NULL, 's'},
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{"demangle", optional_argument, NULL, 'C'},
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{"exe", required_argument, NULL, 'e'},
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{"functions", no_argument, NULL, 'f'},
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{"inlines", no_argument, NULL, 'i'},
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{"pretty-print", no_argument, NULL, 'p'},
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{"section", required_argument, NULL, 'j'},
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{"target", required_argument, NULL, 'b'},
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{"help", no_argument, NULL, 'H'},
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{"version", no_argument, NULL, 'V'},
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{0, no_argument, 0, 0}
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};
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static void usage (FILE *, int);
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static void slurp_symtab (bfd *);
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static void find_address_in_section (bfd *, asection *, void *);
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static void find_offset_in_section (bfd *, asection *);
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static void translate_addresses (bfd *, asection *);
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/* Print a usage message to STREAM and exit with STATUS. */
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static void
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usage (FILE *stream, int status)
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{
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fprintf (stream, _("Usage: %s [option(s)] [addr(s)]\n"), program_name);
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fprintf (stream, _(" Convert addresses into line number/file name pairs.\n"));
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fprintf (stream, _(" If no addresses are specified on the command line, they will be read from stdin\n"));
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fprintf (stream, _(" The options are:\n\
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@<file> Read options from <file>\n\
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-a --addresses Show addresses\n\
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-b --target=<bfdname> Set the binary file format\n\
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-e --exe=<executable> Set the input file name (default is a.out)\n\
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-i --inlines Unwind inlined functions\n\
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-j --section=<name> Read section-relative offsets instead of addresses\n\
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-p --pretty-print Make the output easier to read for humans\n\
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-s --basenames Strip directory names\n\
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-f --functions Show function names\n\
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-C --demangle[=style] Demangle function names\n\
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-h --help Display this information\n\
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-v --version Display the program's version\n\
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\n"));
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list_supported_targets (program_name, stream);
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if (REPORT_BUGS_TO[0] && status == 0)
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fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
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exit (status);
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}
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/* Read in the symbol table. */
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static void
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slurp_symtab (bfd *abfd)
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{
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long storage;
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long symcount;
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bfd_boolean dynamic = FALSE;
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if ((bfd_get_file_flags (abfd) & HAS_SYMS) == 0)
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return;
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storage = bfd_get_symtab_upper_bound (abfd);
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if (storage == 0)
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{
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storage = bfd_get_dynamic_symtab_upper_bound (abfd);
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dynamic = TRUE;
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}
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if (storage < 0)
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bfd_fatal (bfd_get_filename (abfd));
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syms = (asymbol **) xmalloc (storage);
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if (dynamic)
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symcount = bfd_canonicalize_dynamic_symtab (abfd, syms);
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else
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symcount = bfd_canonicalize_symtab (abfd, syms);
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if (symcount < 0)
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bfd_fatal (bfd_get_filename (abfd));
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/* If there are no symbols left after canonicalization and
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we have not tried the dynamic symbols then give them a go. */
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if (symcount == 0
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&& ! dynamic
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&& (storage = bfd_get_dynamic_symtab_upper_bound (abfd)) > 0)
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{
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free (syms);
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syms = xmalloc (storage);
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symcount = bfd_canonicalize_dynamic_symtab (abfd, syms);
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}
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/* PR 17512: file: 2a1d3b5b.
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Do not pretend that we have some symbols when we don't. */
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if (symcount <= 0)
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{
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free (syms);
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syms = NULL;
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}
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}
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/* These global variables are used to pass information between
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translate_addresses and find_address_in_section. */
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static bfd_vma pc;
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static const char *filename;
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static const char *functionname;
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static unsigned int line;
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static unsigned int discriminator;
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static bfd_boolean found;
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/* Look for an address in a section. This is called via
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bfd_map_over_sections. */
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static void
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find_address_in_section (bfd *abfd, asection *section,
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void *data ATTRIBUTE_UNUSED)
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{
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bfd_vma vma;
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bfd_size_type size;
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if (found)
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return;
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if ((bfd_get_section_flags (abfd, section) & SEC_ALLOC) == 0)
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return;
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vma = bfd_get_section_vma (abfd, section);
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if (pc < vma)
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return;
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size = bfd_get_section_size (section);
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if (pc >= vma + size)
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return;
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found = bfd_find_nearest_line_discriminator (abfd, section, syms, pc - vma,
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&filename, &functionname,
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&line, &discriminator);
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}
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/* Look for an offset in a section. This is directly called. */
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static void
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find_offset_in_section (bfd *abfd, asection *section)
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{
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bfd_size_type size;
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if (found)
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return;
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if ((bfd_get_section_flags (abfd, section) & SEC_ALLOC) == 0)
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return;
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size = bfd_get_section_size (section);
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if (pc >= size)
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return;
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found = bfd_find_nearest_line_discriminator (abfd, section, syms, pc,
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&filename, &functionname,
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&line, &discriminator);
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}
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/* Read hexadecimal addresses from stdin, translate into
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file_name:line_number and optionally function name. */
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static void
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translate_addresses (bfd *abfd, asection *section)
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{
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int read_stdin = (naddr == 0);
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for (;;)
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{
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if (read_stdin)
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{
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char addr_hex[100];
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if (fgets (addr_hex, sizeof addr_hex, stdin) == NULL)
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break;
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pc = bfd_scan_vma (addr_hex, NULL, 16);
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}
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else
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{
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if (naddr <= 0)
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break;
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--naddr;
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pc = bfd_scan_vma (*addr++, NULL, 16);
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}
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if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
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{
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const struct elf_backend_data *bed = get_elf_backend_data (abfd);
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bfd_vma sign = (bfd_vma) 1 << (bed->s->arch_size - 1);
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pc &= (sign << 1) - 1;
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if (bed->sign_extend_vma)
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pc = (pc ^ sign) - sign;
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}
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if (with_addresses)
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{
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printf ("0x");
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bfd_printf_vma (abfd, pc);
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if (pretty_print)
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printf (": ");
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else
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printf ("\n");
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}
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found = FALSE;
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if (section)
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find_offset_in_section (abfd, section);
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else
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bfd_map_over_sections (abfd, find_address_in_section, NULL);
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if (! found)
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{
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if (with_functions)
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{
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if (pretty_print)
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printf ("?? ");
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else
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printf ("??\n");
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}
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printf ("??:0\n");
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}
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else
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{
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while (1)
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{
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if (with_functions)
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{
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const char *name;
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char *alloc = NULL;
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name = functionname;
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if (name == NULL || *name == '\0')
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name = "??";
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else if (do_demangle)
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{
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alloc = bfd_demangle (abfd, name, DMGL_ANSI | DMGL_PARAMS);
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if (alloc != NULL)
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name = alloc;
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}
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printf ("%s", name);
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if (pretty_print)
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/* Note for translators: This printf is used to join the
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function name just printed above to the line number/
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file name pair that is about to be printed below. Eg:
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foo at 123:bar.c */
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printf (_(" at "));
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else
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printf ("\n");
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if (alloc != NULL)
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free (alloc);
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}
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if (base_names && filename != NULL)
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{
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char *h;
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h = strrchr (filename, '/');
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if (h != NULL)
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filename = h + 1;
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}
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printf ("%s:", filename ? filename : "??");
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if (line != 0)
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{
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if (discriminator != 0)
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printf ("%u (discriminator %u)\n", line, discriminator);
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else
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printf ("%u\n", line);
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}
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else
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printf ("?\n");
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if (!unwind_inlines)
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found = FALSE;
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else
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found = bfd_find_inliner_info (abfd, &filename, &functionname,
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&line);
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if (! found)
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break;
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if (pretty_print)
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/* Note for translators: This printf is used to join the
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line number/file name pair that has just been printed with
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the line number/file name pair that is going to be printed
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by the next iteration of the while loop. Eg:
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123:bar.c (inlined by) 456:main.c */
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printf (_(" (inlined by) "));
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}
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}
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/* fflush() is essential for using this command as a server
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child process that reads addresses from a pipe and responds
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with line number information, processing one address at a
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time. */
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fflush (stdout);
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}
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}
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/* Process a file. Returns an exit value for main(). */
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static int
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process_file (const char *file_name, const char *section_name,
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const char *target)
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{
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bfd *abfd;
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asection *section;
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char **matching;
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if (get_file_size (file_name) < 1)
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return 1;
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abfd = bfd_openr (file_name, target);
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if (abfd == NULL)
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bfd_fatal (file_name);
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/* Decompress sections. */
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abfd->flags |= BFD_DECOMPRESS;
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if (bfd_check_format (abfd, bfd_archive))
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fatal (_("%s: cannot get addresses from archive"), file_name);
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if (! bfd_check_format_matches (abfd, bfd_object, &matching))
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{
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bfd_nonfatal (bfd_get_filename (abfd));
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if (bfd_get_error () == bfd_error_file_ambiguously_recognized)
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{
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list_matching_formats (matching);
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free (matching);
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}
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xexit (1);
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}
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if (section_name != NULL)
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{
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section = bfd_get_section_by_name (abfd, section_name);
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if (section == NULL)
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fatal (_("%s: cannot find section %s"), file_name, section_name);
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}
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else
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section = NULL;
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slurp_symtab (abfd);
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translate_addresses (abfd, section);
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if (syms != NULL)
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{
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free (syms);
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syms = NULL;
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}
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bfd_close (abfd);
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return 0;
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}
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int
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main (int argc, char **argv)
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{
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const char *file_name;
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const char *section_name;
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char *target;
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int c;
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#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
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setlocale (LC_MESSAGES, "");
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#endif
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#if defined (HAVE_SETLOCALE)
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setlocale (LC_CTYPE, "");
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#endif
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bindtextdomain (PACKAGE, LOCALEDIR);
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textdomain (PACKAGE);
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program_name = *argv;
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xmalloc_set_program_name (program_name);
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bfd_set_error_program_name (program_name);
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expandargv (&argc, &argv);
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bfd_init ();
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set_default_bfd_target ();
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file_name = NULL;
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section_name = NULL;
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target = NULL;
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while ((c = getopt_long (argc, argv, "ab:Ce:sfHhij:pVv", long_options, (int *) 0))
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!= EOF)
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{
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switch (c)
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{
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case 0:
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break; /* We've been given a long option. */
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case 'a':
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with_addresses = TRUE;
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break;
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case 'b':
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target = optarg;
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break;
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case 'C':
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do_demangle = TRUE;
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if (optarg != NULL)
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{
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enum demangling_styles style;
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style = cplus_demangle_name_to_style (optarg);
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if (style == unknown_demangling)
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fatal (_("unknown demangling style `%s'"),
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optarg);
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cplus_demangle_set_style (style);
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}
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break;
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case 'e':
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file_name = optarg;
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break;
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case 's':
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base_names = TRUE;
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break;
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case 'f':
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with_functions = TRUE;
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break;
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case 'p':
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pretty_print = TRUE;
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break;
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case 'v':
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case 'V':
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print_version ("addr2line");
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break;
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case 'h':
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case 'H':
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usage (stdout, 0);
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break;
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case 'i':
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unwind_inlines = TRUE;
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break;
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case 'j':
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section_name = optarg;
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break;
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default:
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usage (stderr, 1);
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break;
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}
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}
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if (file_name == NULL)
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file_name = "a.out";
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addr = argv + optind;
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naddr = argc - optind;
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return process_file (file_name, section_name, target);
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}
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