Adding gem5 source to svn.

git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1819 8c4709b5-6ec9-48aa-a5cd-a96041d1645a
2012-10-24 19:18:57 +00:00
parent f7ff71bd46
commit b41eec3f65
3222 changed files with 658579 additions and 1 deletions
--- a/simulators/gem5/util/tracediff
+++ b/simulators/gem5/util/tracediff
@ -0,0 +1,153 @@
+#! /usr/bin/env perl
+# Copyright (c) 2003-2007 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.  Takes a common m5 command line with embedded
+# alternatives and executes the two alternative commands in separate
+# subdirectories with output piped to rundiff.
+#
+# ******Note that you need to enable some trace flags in the args in order
+# to do anything useful!******
+#
+# Script arguments are handled uniformly as follows:
+# - If the argument does not contain a '|' character, it is appended
+#   to both command lines.
+# - If the argument has a '|' character in it, the text on either side
+#   of the '|' is appended to the respective command lines.  Note that
+#   you'll have to quote the arg or escape the '|' with a backslash
+#   so that the shell doesn't think you're doing a pipe.
+# - Arguments with '#' characters are split at those characters,
+#   processed for alternatives ('|'s) as independent terms, then
+#   pasted back into a single argument (without the '#'s).  (Sort of
+#   inspired by the C preprocessor '##' token pasting operator.)
+#
+# In other words, the arguments should look like the command line you
+# want to run, with "|" used to list the alternatives for the parts
+# that you want to differ between the two runs.
+#
+# For example:
+#
+# % tracediff m5.opt --opt1 '--opt2|--opt3' --opt4
+# would compare these two runs:
+# m5.opt --opt1 --opt2 --opt4
+# m5.opt --opt1 --opt3 --opt4
+#
+# % tracediff 'path1|path2#/m5.opt' --opt1 --opt2
+# would compare these two runs:
+# path1/m5.opt --opt1 --opt2
+# path2/m5.opt --opt1 --opt2
+#
+# If you want to add arguments to one run only, just put a '|' in with
+# text only on one side ('--onlyOn1|').  You can do this with multiple
+# arguments together too ('|-a -b -c' adds three args to the second
+# run only).
+#
+# The '-n' argument to tracediff allows you to preview the two
+# generated command lines without running them.
+#
+
+use FindBin;
+
+$dryrun = 0;
+
+if (@ARGV >= 1 && $ARGV[0] eq '-n') {
+    $dryrun = 1;
+    shift @ARGV;
+}
+
+if (@ARGV < 1) {
+    die "Usage: tracediff [-n] \"sim1|sim2\" [common-arg \"arg1|arg2\" ...]\n";
+}
+
+foreach $arg (@ARGV) {
+    $a1 = $a2 = '';
+    @subargs = split('#', $arg);
+    foreach $subarg (@subargs) {
+        if ($subarg eq '') {
+            next;
+        }
+        @pair = split('\|', $subarg, -1); # -1 enables null trailing fields
+        if (@pair == 1) {
+            $a1 .= $subarg;
+            $a2 .= $subarg;
+        } elsif (@pair == 2) {
+            $a1 .= $pair[0];
+            $a2 .= $pair[1];
+        } else {
+            print 'Parse error: too many |s in ', $arg, "\n";
+            exit(1);
+        }
+    }
+
+    push @cmd1, $a1;
+    push @cmd2, $a2;
+}
+
+
+if ($dryrun) {
+    print "CMD1: ", join(' ', @cmd1), "\n";
+    print "CMD2: ", join(' ', @cmd2), "\n";
+    exit(0);
+}
+
+# First two args are the two simulator binaries to compare
+$sim1 = shift @cmd1;
+$sim2 = shift @cmd2;
+
+# Everything else is a simulator arg.
+$args1 = join(' ', @cmd1);
+$args2 = join(' ', @cmd2);
+
+# Common mistake: if you don't set any debugflags this often isn't
+# doing what you want.
+if ($args1 !~ /--debug-flags/) {
+    print "****\n";
+    print "**** WARNING: no debug flags set... you may not be diffing much!\n";
+    print "****\n";
+}
+
+# Run individual invocations in separate dirs so output and intermediate
+# files (particularly config.py and config.ini) don't conflict.
+$dir1 = "tracediff-$$-1";
+$dir2 = "tracediff-$$-2";
+mkdir($dir1) or die "Can't create dir $dir1\n";
+mkdir($dir2) or die "Can't create dir $dir2\n";
+
+$cmd1 = "$sim1 -d $dir1 $args1 2>&1 |";
+$cmd2 = "$sim2 -d $dir2 $args2 2>&1 |";
+
+# Expect that rundiff is in the same dir as the tracediff script.
+# FindBin figures that out for us.
+$fullcmd = "$FindBin::Bin/rundiff '$cmd1' '$cmd2' 2>&1 > tracediff-$$.out";
+
+print "Executing $fullcmd\n";
+system($fullcmd);
+
+
+