92 lines
2.4 KiB
Perl
Executable File
92 lines
2.4 KiB
Perl
Executable File
#!/usr/bin/perl -w
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# -----------------------------------------------------------------------------
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#
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# Relay-checker.
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#
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# This program will inspect a log file with relay information and tell you
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# whether calls and returns match. If not, this suggests that the parameter
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# list might be incorrect. (It could be something else also.)
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#
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# Copyright 1997-1998 Morten Welinder (terra@diku.dk)
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#
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# -----------------------------------------------------------------------------
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my $srcfile = $ARGV[0];
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my @callstack = ();
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my $newlineerror = 0;
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my $indentp = 1;
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open (IN, "<$srcfile") || die "Cannot open $srcfile for reading: $!\n";
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LINE:
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while (<IN>) {
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if (/^Call ([A-Za-z0-9]+\.\d+): .*\)/) {
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my $func = $1;
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if (/ ret=(........)$/ ||
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/ ret=(....:....) (ds=....)$/ ||
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/ ret=(........) (fs=....)$/) {
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my $retaddr = $1;
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my $segreg = $2;
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$segreg = "none" unless defined $segreg;
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push @callstack, [$func,$retaddr, $segreg];
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next;
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} else {
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# Assume a line got cut by a line feed in a string.
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$_ .= scalar (<IN>);
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if (!$newlineerror) {
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print "Error: string probably cut by newline.\n";
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$newlineerror = 1;
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}
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# print "[$_]";
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redo;
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}
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}
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if (/^Ret ([A-Za-z0-9]+\.\d+): .* ret=(........)$/ ||
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/^Ret ([A-Za-z0-9]+\.\d+): .* ret=(....:....) (ds=....)$/ ||
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/^Ret ([A-Za-z0-9]+\.\d+): .* ret=(........) (fs=....)$/) {
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my $func = $1;
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my $retaddr = $2;
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my $segreg = $3;
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my ($topfunc,$topaddr,$topseg);
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$segreg = "none" unless defined $segreg;
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POP:
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while (1) {
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if ($#callstack == -1) {
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print "Error: Return from $func to $retaddr with empty stack.\n";
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next LINE;
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}
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($topfunc,$topaddr,$topseg) = @{pop @callstack};
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if ($topfunc ne $func) {
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print "Error: Return from $topfunc, but call from $func.\n";
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next POP
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}
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last POP;
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}
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my $addrok = ($topaddr eq $retaddr);
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my $segok = ($topseg eq $segreg);
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if ($addrok && $segok) {
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print "OK: ", ($indentp ? (' ' x (1 + $#callstack)) : '');
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print "$func from $retaddr with $segreg.\n";
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} else {
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print "Error: Return from $func is to $retaddr, not $topaddr.\n"
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if !$addrok;
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print "Error: Return from $func with segreg $segreg, not $topseg.\n"
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if !$segok;
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}
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}
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}
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while ($#callstack != -1) {
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my ($topfunc,$topaddr) = @{pop @callstack};
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print "Error: leftover call to $topfunc from $topaddr.\n";
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}
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close (IN);
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