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#! /usr/bin/env perl
#
# script to run gdb on return-addresses
# Usage: $0 malloc-log-file binary
#
# Copyright 1995 by Gray Watson
#
# This file is part of the dmalloc package.
#
# Permission to use, copy, modify, and distribute this software for
# any purpose and without fee is hereby granted, provided that the
# above copyright notice and this permission notice appear in all
# copies, and that the name of Gray Watson not be used in advertising
# or publicity pertaining to distribution of the document or software
# without specific, written prior permission.
#
# Gray Watson makes no representations about the suitability of the
# software described herein for any purpose. It is provided "as is"
# without express or implied warranty.
#
# The author may be contacted at gray.watson@letters.com
#
# $Id$
#
#
# Use this Perl script to run gdb and get information on the return-address
# (ra) addresses from a dmalloc logfile output. This will search for
# any ra= lines and will examine them and try to get the line number.
#
# NOTE: you may want to direct the output from the script to a file
# else gdb seems to prompt for a return like you are on the end of a
# page.
#
# Be sure to send me mail if there is an easier way to do all this.
#
###############################################################################
# usage message
#
if (@ARGV != 2 ) {
die "Usage: $0 dmalloc-log binary-that-generated-log\n";
}
$malloc = @ARGV[0];
$command = @ARGV[1];
@addresses = ();
open(malloc, $malloc);
while ( <malloc> ) {
if ($_ =~ m/ra=(0x[0-9a-fA-F]+)/) {
push(@addresses, $1);
}
}
close(malloc);
open(SORT, "|sort -u > $malloc.tmp");
foreach $address (@addresses) {
print SORT "$address\n";
}
close(SORT);
@addresses = ();
open(SORT, "< $malloc.tmp");
while ( <SORT> ) {
chomp $_;
push(@addresses, $_);
}
close(SORT);
unlink $malloc.tmp;
open (gdb, "|gdb -nx -q $command > $malloc.tmp") || die "Could not run gdb: $!\n";
$| = 1;
# get rid of the (gdb)
printf (gdb "set prompt\n");
printf (gdb "echo \\n\n");
# load in the shared libraries
printf (gdb "sharedlibrary\n");
# run the program to have _definitly_ the informations
# we need from the shared libraries. Unfortunatly gdb 4.18's
# version of sharedlibrary does nothing ;(
printf (gdb "b main\n");
printf (gdb "run\n");
foreach $address (@addresses) {
printf (gdb "echo -----------------------------------------------\\n\n");
# printf (gdb "echo Address = '%s'\n", $address);
printf (gdb "x %s\n", $address);
printf (gdb "info line *(%s)\n", $address);
}
printf (gdb "quit\ny\n");
# $| = 0;
close(gdb);
%lines = ();
open(malloc, "< $malloc.tmp");
$count = 0;
$address = "";
$line = "";
while ( <malloc> ) {
# ignore our own input
if ($_ =~ m/^x 0x/ || $_ =~ m/^echo ------/ || $_ =~ m/^info line/) {
next;
}
if ($_ =~ m/^--------/) {
if ($line) {
$lines{$address} = "$line";
}
$count = 0;
$address = "";
$line = "";
} else {
$count = $count + 1;
}
if ($count == 1 && $_ =~ m/(0x[0-9a-fA-F]+)\s*<(.*)>:\s*(\S+)/) {
$address = $1;
$line = "$2<$3>";
}
if ($count == 2 && $_ =~ m/Line ([0-9]+) of \"([^\"]*)\"/) {
$line = "$2:$1";
}
}
if ($line) {
$lines{$address} = "$line";
}
close(malloc);
open(malloc, $malloc);
while ( <malloc> ) {
if ($_ =~ m/ra=(0x[0-9a-fA-F]+)/) {
$address = $1;
if (defined($lines{$address})) {
$_ =~ s/ra=$address/$lines{$address}/;
print STDOUT $_;
} else {
print STDOUT $_;
}
} else {
print STDOUT $_;
}
}
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