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#! /usr/bin/env perl
# Copyright (c) 2003-2005 The Regents of The University of Michigan
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met: redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer;
# redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution;
# neither the name of the copyright holders nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Authors: Steve Reinhardt
# Script to simplify using rundiff on trace outputs from two
# invocations of m5.
#
# Note that you need to enable some trace flags in the args in order
# to do anything useful!
#
# If you want to pass different arguments to the two instances of m5,
# you can embed them in the simulator arguments like this:
#
# % tracediff "m5.opt --foo:bar=1" "m5.opt --foo:bar=2" [common args]
#
if (@ARGV < 2) {
die "Usage: tracediff sim1 sim2 [--trace:flags=X args...]\n";
}
# First two args are the two simulator binaries to compare
$sim1 = shift;
$sim2 = shift;
# Everything else on the command line is taken to be an m5 argument to
# be given to both invocations
$simargs = '"' . join('" "', @ARGV) . '"';
# Redirect config output to cout so that gets diffed too (in case
# that's the source of the problem).
$simargs .= " --root:config_output_file=cout";
$cmd1 = "$sim1 $simargs --stats:text_file=tracediff-$$-1.stats 2>&1 |";
$cmd2 = "$sim2 $simargs --stats:text_file=tracediff-$$-2.stats 2>&1 |";
# This only works if you have rundiff in your path. I just edit it
# with an explicit path if necessary.
$fullcmd = "rundiff '$cmd1' '$cmd2' 2>&1 > tracediff-$$.out";
print "Executing $fullcmd\n";
system($fullcmd);
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