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#!/usr/bin/perl -s
# Copyright 2006 Red Hat, Inc.
#
# This file is part of Cygwin.
#
# This software is a copyrighted work licensed under the terms of the
# Cygwin license. Please consult the file "CYGWIN_LICENSE" for
# details.
# This will do a crude test to see if the (NO)?SIGFE stuff is used properly
# in cygwin.din. It is not perfect so do not use it to do a wholesale replacement.
#
# Input is the output of 'objdump --disassemble --demangle cygwin0.dll'.
#
use strict;
use vars qw'$v';
sub star($);
my %funcs;
my $func = '';
$| = 1;
while (<>) {
/^610.....\s+<([^\(>]+).*?:/o and do {
$func = $1;
$funcs{$func} = {} unless defined $funcs{$func};
next;
};
$func and /call\s+\S+\s+<([^\(>]+)/o and do {
my $called = $1;
$funcs{$func}{$called} = 1;
if ($called =~ /^[A-Z].*@/o || ($called = $funcs{$called}{-uses_kernel})) {
$funcs{$func}{-uses_kernel} ||= $called;
my @a = ($func);
while (my $f = shift @a) {
for my $k (keys %funcs) {
if ($funcs{$k}{$f} && !$funcs{$k}{-uses_kernel}) {
$funcs{$k}{-uses_kernel} = $called;
push(@a, $k);
}
}
}
}
next;
};
}
if ($v) {
for my $k (sort keys %funcs) {
print star($funcs{$k}), $k, $funcs{$k}{-uses_kernel} ? " ($funcs{$k}{-uses_kernel})\n" : "\n";
my $indent = ' ';
for (sort keys %{$funcs{$k}}) {
next if /^-/o;
print $indent, $_, star($funcs{$k});
$indent = ' ';
}
print "\n";
}
}
open(DIN, '<', 'cygwin.din') or die "$0: couldn't open cygwin.din - $!\n";
while (<DIN>) {
my $line = $_;
/^LIBRARY\s+/o and next;
/^\s*$/ and next;
/^EXPORTS/o and next;
/ DATA$/o and next;
my $sigfe = (/\s+((?:NO)?SIGFE)\s*$/o)[0] !~ /^NO/o;
s/\s+((?:NO)?SIGFE)\s*$//o;
my $func = (/\s+=\s+(\S+)/o)[0] || (/^\s*(\S+)/o)[0];
if (!defined($funcs{$func})) {
warn "hmm. couldn't find $func in disassembled output\n";
} elsif (!!$funcs{$func}{-uses_kernel} != $sigfe) {
warn "mismatch detected: $line";
}
}
sub star($) {
return $_[0]->{-uses_kernel} ? '*' : '';
}
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