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# FIPS assembly language preprocessor
# Renames all symbols in the file to
# their modified fips versions.
my @ARGS = @ARGV;
my $top = shift @ARGS;
my $target = shift @ARGS;
my $runasm = 1;
if ($ARGS[0] eq "norunasm")
{
$runasm = 0;
shift @ARGS;
}
# HACK to disable operation if no OPENSSL_FIPSSYMS option.
# will go away when tested more fully.
my $enabled = 0;
foreach (@ARGS) { $enabled = 1 if /-DOPENSSL_FIPSSYMS/ ; }
if ($enabled == 0 && $runasm)
{
system @ARGS;
exit $?
}
# Open symbol rename file.
open(IN, "$top/fips/fipssyms.h") || die "Can't open fipssyms.h";
# Skip to assembler symbols
while (<IN>)
{
last if (/assembler/)
}
# Store all renames.
while (<IN>)
{
if (/^#define\s+(\w+)\s+(\w+)\b/)
{
$edits{$1} = $2;
}
}
my ($from, $to);
#rename target temporarily
rename($target, "tmptarg.s") || die "Can't rename $target\n";
#edit target
open IN,"tmptarg.s";
open OUT, ">$target";
while (<IN>)
{
while (($from, $to) = each %edits)
{
s/(\b_*)$from(\b)/$1$to$2/g;
}
print OUT $_;
}
close OUT;
if ($runasm)
{
# run assembler
system @ARGS;
my $rv = $?;
# restore target
unlink $target;
rename "tmptarg.s", $target;
die "Error executing assembler!" if $rv != 0;
}
else
{
# Don't care about target
unlink "tmptarg.s";
}
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