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tracediff: add '#' support for sub-arg alternatives, '-n' param

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Steve Reinhardt 2008-11-06 20:23:05 -08:00
parent 92714e529f
commit 72743e5020
1 changed files with 52 additions and 16 deletions
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66
util/tracediff
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@ -28,7 +28,9 @@
# Authors: Steve Reinhardt
# Script to simplify using rundiff on trace outputs from two
# invocations of m5.
# 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!******
@ -40,6 +42,10 @@
# 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
@ -47,36 +53,66 @@
#
# For example:
#
# % tracediff m5.opt --opt1 "--opt2|--opt3" --opt4
# % tracediff m5.opt --opt1 '--opt2|--opt3' --opt4
# would compare these two runs:
# m5.opt --opt1 --opt2 --opt4
# m5.opt --opt1 --opt3 --opt4
#
# If you want to compare two different simulator binaries, put a '|'
# in the first script argument ("path1/m5.opt|path2/m5.opt"). 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
# % 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;
if (@ARGV < 2) {
die "Usage: tracediff \"sim1|sim2\" [common-arg \"arg1|arg2\" ...]\n";
$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) {
@pair = split('\|', $arg, -1); # -1 enables null trailing fields
if ($#pair > 0) {
push @cmd1, $pair[0];
push @cmd2, $pair[1];
$a1 = $a2 = '';
@subargs = split('#', $arg, -1);
foreach $subarg (@subargs) {
@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 {
push @cmd1, $arg;
push @cmd2, $arg;
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;