util/tracediff

   1 #! /usr/bin/env perl
   2 # Copyright (c) 2003-2004 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
  42 if (@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 += " --Universe: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
  65 print "Executing $fullcmd\n";
  66 system($fullcmd);
  67
  68
  69