NetBSD/gnu/dist/binutils/addr2line.c

325 lines
7.0 KiB
C
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/* addr2line.c -- convert addresses to line number and function name
Copyright 1997 Free Software Foundation, Inc.
Contributed by Ulrich Lauther <Ulrich.Lauther@zfe.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 2, 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* Derived from objdump.c and nm.c by Ulrich.Lauther@zfe.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 <ctype.h>
#include <string.h>
#include "bfd.h"
#include "getopt.h"
#include "libiberty.h"
#include "demangle.h"
#include "bucomm.h"
extern char *program_version;
static boolean with_functions; /* -f, show function names. */
static boolean do_demangle; /* -C, demangle names. */
static boolean base_names; /* -s, strip directory names. */
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[] =
{
{"basenames", no_argument, NULL, 's'},
{"demangle", no_argument, NULL, 'C'},
{"exe", required_argument, NULL, 'e'},
{"functions", no_argument, NULL, 'f'},
{"target", required_argument, NULL, 'b'},
{"help", no_argument, NULL, 'H'},
{"version", no_argument, NULL, 'V'},
{0, no_argument, 0, 0}
};
static void usage PARAMS ((FILE *, int));
static void slurp_symtab PARAMS ((bfd *));
static void find_address_in_section PARAMS ((bfd *, asection *, PTR));
static void translate_addresses PARAMS ((bfd *));
static void process_file PARAMS ((const char *, const char *));
/* Print a usage message to STREAM and exit with STATUS. */
static void
usage (stream, status)
FILE *stream;
int status;
{
fprintf (stream, "\
Usage: %s [-CfsHV] [-b bfdname] [--target=bfdname]\n\
[-e executable] [--exe=executable] [--demangle]\n\
[--basenames] [--functions] [addr addr ...]\n",
program_name);
list_supported_targets (program_name, stream);
if (status == 0)
fprintf (stream, "Report bugs to bug-gnu-utils@prep.ai.mit.edu\n");
exit (status);
}
/* Read in the symbol table. */
static void
slurp_symtab (abfd)
bfd *abfd;
{
long storage;
long symcount;
if ((bfd_get_file_flags (abfd) & HAS_SYMS) == 0)
return;
storage = bfd_get_symtab_upper_bound (abfd);
if (storage < 0)
bfd_fatal (bfd_get_filename (abfd));
syms = (asymbol **) xmalloc (storage);
symcount = bfd_canonicalize_symtab (abfd, syms);
if (symcount < 0)
bfd_fatal (bfd_get_filename (abfd));
}
/* 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 boolean found;
/* Look for an address in a section. This is called via
bfd_map_over_sections. */
static void
find_address_in_section (abfd, section, data)
bfd *abfd;
asection *section;
PTR data;
{
bfd_vma vma;
if (found)
return;
if ((bfd_get_section_flags (abfd, section) & SEC_ALLOC) == 0)
return;
vma = bfd_get_section_vma (abfd, section);
if (pc < vma)
return;
found = bfd_find_nearest_line (abfd, section, syms, pc - vma,
&filename, &functionname, &line);
}
/* Read hexadecimal addresses from stdin, translate into
file_name:line_number and optionally function name. */
static void
translate_addresses (abfd)
bfd *abfd;
{
int read_stdin = (naddr == 0);
for (;;)
{
if (read_stdin)
{
char addr_hex[100];
if (fgets (addr_hex, sizeof addr_hex, stdin) == NULL)
break;
pc = strtol (addr_hex, NULL, 16);
}
else
{
if (naddr <= 0)
break;
--naddr;
pc = strtol (*addr++, NULL, 16);
}
found = false;
bfd_map_over_sections (abfd, find_address_in_section, (PTR) NULL);
if (! found)
{
if (with_functions)
printf ("??\n");
printf ("??:0\n");
}
else
{
if (with_functions)
{
if (*functionname == '\0')
printf ("??\n");
else if (! do_demangle)
printf ("%s\n", functionname);
else
{
char *res;
res = cplus_demangle (functionname, DMGL_ANSI | DMGL_PARAMS);
if (res == NULL)
printf ("%s\n", functionname);
else
{
printf ("%s\n", res);
free (res);
}
}
}
if (base_names)
{
char *h;
h = strrchr (filename, '/');
if (h != NULL)
filename = h + 1;
}
printf ("%s:%u\n", filename, line);
}
/* 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. */
static void
process_file (filename, target)
const char *filename;
const char *target;
{
bfd *abfd;
char **matching;
abfd = bfd_openr (filename, target);
if (abfd == NULL)
bfd_fatal (filename);
if (bfd_check_format (abfd, bfd_archive))
fatal ("%s: can not get addresses from archive", filename);
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);
}
slurp_symtab (abfd);
translate_addresses (abfd);
if (syms != NULL)
{
free (syms);
syms = NULL;
}
bfd_close (abfd);
}
int
main (argc, argv)
int argc;
char **argv;
{
char *filename;
char *target;
int c;
program_name = *argv;
xmalloc_set_program_name (program_name);
bfd_init ();
set_default_bfd_target ();
filename = NULL;
target = NULL;
while ((c = getopt_long (argc, argv, "b:Ce:sfHV", long_options, (int *) 0))
!= EOF)
{
switch (c)
{
case 0:
break; /* we've been given a long option */
case 'b':
target = optarg;
break;
case 'C':
do_demangle = true;
break;
case 'e':
filename = optarg;
break;
case 's':
base_names = true;
break;
case 'f':
with_functions = true;
break;
case 'V':
print_version ("addr2line");
break;
case 'H':
usage (stdout, 0);
break;
default:
usage (stderr, 1);
break;
}
}
if (filename == NULL)
filename = "a.out";
addr = argv + optind;
naddr = argc - optind;
process_file (filename, target);
return 0;
}