tracediff revision 1372 
1#! /usr/bin/env perl
2# Copyright (c) 2003-2005 The Regents of The University of Michigan
3# All rights reserved.
4#
5# Redistribution and use in source and binary forms, with or without
6# modification, are permitted provided that the following conditions are
7# met: redistributions of source code must retain the above copyright
8# notice, this list of conditions and the following disclaimer;
9# redistributions in binary form must reproduce the above copyright
10# notice, this list of conditions and the following disclaimer in the
11# documentation and/or other materials provided with the distribution;
12# neither the name of the copyright holders nor the names of its
13# contributors may be used to endorse or promote products derived from
14# this software without specific prior written permission.
15#
16# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27#
28# Authors: Steve Reinhardt
29
30# Script to simplify using rundiff on trace outputs from two
31# invocations of m5.
32#
33# Note that you need to enable some trace flags in the args in order
34# to do anything useful!
35#
36# If you want to pass different arguments to the two instances of m5,
37# you can embed them in the simulator arguments like this:
38#
39# % tracediff "m5.opt --foo:bar=1" "m5.opt --foo:bar=2" [common args]
40#
41
42if (@ARGV < 2) {
43    die "Usage: tracediff sim1 sim2 [--trace:flags=X args...]\n";
44}
45
46# First two args are the two simulator binaries to compare
47$sim1 = shift;
48$sim2 = shift;
49
50# Everything else on the command line is taken to be an m5 argument to
51# be given to both invocations
52$simargs = '"' . join('" "', @ARGV) . '"';
53
54# Redirect config output to cout so that gets diffed too (in case
55# that's the source of the problem).
56$simargs .= " --root:config_output_file=cout";
57
58$cmd1 = "$sim1 $simargs --stats:text_file=tracediff-$$-1.stats 2>&1 |";
59$cmd2 = "$sim2 $simargs --stats:text_file=tracediff-$$-2.stats 2>&1 |";
60
61# This only works if you have rundiff in your path.  I just edit it
62# with an explicit path if necessary.
63$fullcmd = "rundiff '$cmd1' '$cmd2' 2>&1 > tracediff-$$.out";
64
65print "Executing $fullcmd\n";
66system($fullcmd);
67
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