mirror of
https://github.com/capstone-engine/llvm-capstone.git
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456 lines
11 KiB
Perl
Executable File
456 lines
11 KiB
Perl
Executable File
#!/usr/bin/env perl
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#
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# The LLVM Compiler Infrastructure
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#
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# This file is distributed under the University of Illinois Open Source
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# License. See LICENSE.TXT for details.
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#
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##===----------------------------------------------------------------------===##
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#
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# A script designed to interpose between the build system and gcc. It invokes
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# both gcc and the static analyzer.
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#
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##===----------------------------------------------------------------------===##
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use strict;
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use warnings;
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use Cwd qw/ getcwd abs_path /;
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use File::Temp qw/ tempfile /;
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use File::Path qw / mkpath /;
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my $CC = $ENV{'CCC_CC'};
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if (!defined $CC) { $CC = "gcc"; }
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##----------------------------------------------------------------------------##
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# Process Clang Crashes.
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##----------------------------------------------------------------------------##
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sub GetPPExt {
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my $Lang = shift;
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if ($Lang =~ /objective-c/) { return ".mi"; }
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return ".i";
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}
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sub ProcessClangFailure {
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my ($Clang, $Lang, $file, $Args, $HtmlDir, $ErrorType, $ofile) = @_;
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my $Dir = "$HtmlDir/crashes";
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mkpath $Dir;
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# Generate the preprocessed file with cc (i.e., gcc).
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my ($PPH, $PPFile) = tempfile("clang_crash_XXXXXX",
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SUFFIX => GetPPExt($Lang),
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DIR => $Dir);
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system $CC, @$Args, "-E", "-o", $PPFile;
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close ($PPH);
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# Generate the preprocessed file with clang.
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my $PPFile_Clang = $PPFile;
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$PPFile_Clang =~ s/[.](.+)$/.clang.$1/;
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system $Clang, @$Args, "-E", "-o", "$PPFile_Clang";
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# Create the info file.
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open (OUT, ">", "$PPFile.info.txt") or die "Cannot open $PPFile.info.txt\n";
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print OUT abs_path($file), "\n";
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print OUT "$ErrorType\n";
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print OUT "@$Args\n";
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close OUT;
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`uname -a >> $PPFile.info.txt 2>&1`;
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`$CC -v >> $PPFile.info.txt 2>&1`;
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system 'mv',$ofile,"$PPFile.stderr.txt";
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}
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##----------------------------------------------------------------------------##
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# Running the analyzer.
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##----------------------------------------------------------------------------##
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sub Analyze {
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my ($Clang, $Args, $Lang, $Output, $Verbose, $HtmlDir, $file, $Analyses) = @_;
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# Skip anything related to C++.
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return if ($Lang =~ /c[+][+]/);
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my $RunAnalyzer = 0;
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my $Cmd;
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my @CmdArgs;
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my @CmdArgsSansAnalyses;
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if ($Lang =~ /header/) {
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exit 0 if (!defined ($Output));
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$Cmd = 'cp';
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push @CmdArgs,$file;
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# Remove the PCH extension.
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$Output =~ s/[.]gch$//;
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push @CmdArgs,$Output;
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@CmdArgsSansAnalyses = @CmdArgs;
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}
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else {
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$Cmd = $Clang;
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push @CmdArgs,'-DIBOutlet=__attribute__((iboutlet))';
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push @CmdArgs,@$Args;
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@CmdArgsSansAnalyses = @CmdArgs;
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push @CmdArgs,(split /\s/,$Analyses);
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$RunAnalyzer = 1;
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}
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my @PrintArgs;
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my $dir;
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if ($Verbose) {
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$dir = getcwd();
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print STDERR "\n[LOCATION]: $dir\n";
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push @PrintArgs,"'$Cmd'";
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foreach my $arg (@CmdArgs) { push @PrintArgs,"\'$arg\'"; }
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}
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if ($Verbose == 1) {
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# We MUST print to stderr. Some clients use the stdout output of
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# gcc for various purposes.
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print STDERR join(' ',@PrintArgs);
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print STDERR "\n";
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}
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elsif ($Verbose == 2) {
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print STDERR "#SHELL (cd '$dir' && @PrintArgs)\n";
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}
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if ($RunAnalyzer and defined($HtmlDir)) {
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push @CmdArgs,'-o';
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push @CmdArgs,$HtmlDir;
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}
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if (defined $ENV{'CCC_UBI'}) {
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push @CmdArgs,"--analyzer-viz-egraph-ubigraph";
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}
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# Capture the STDERR of clang and send it to a temporary file.
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# Capture the STDOUT of clang and reroute it to ccc-analyzer's STDERR.
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# We save the output file in the 'crashes' directory if clang encounters
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# any problems with the file.
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pipe (FROM_CHILD, TO_PARENT);
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my $pid = fork();
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if ($pid == 0) {
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close FROM_CHILD;
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open(STDOUT,">&", \*TO_PARENT);
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open(STDERR,">&", \*TO_PARENT);
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exec $Cmd, @CmdArgs;
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}
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close TO_PARENT;
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my ($ofh, $ofile) = tempfile("clang_output_XXXXXX", DIR => $HtmlDir);
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while (<FROM_CHILD>) {
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print $ofh $_;
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print STDERR $_;
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}
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waitpid($pid,0);
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my $Result = $?;
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# Did the command die because of a signal?
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if ($Result & 127 and $Cmd eq $Clang and defined $HtmlDir) {
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ProcessClangFailure($Clang, $Lang, $file, \@CmdArgsSansAnalyses, $HtmlDir,
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"Crash", $ofile);
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}
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elsif ($Result) {
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ProcessClangFailure($Clang, $Lang, $file, \@CmdArgsSansAnalyses, $HtmlDir,
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"Parser Rejects", $ofile);
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}
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`rm -f $ofile`;
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}
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##----------------------------------------------------------------------------##
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# Lookup tables.
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##----------------------------------------------------------------------------##
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my %CompileOptionMap = (
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'-nostdinc' => 0,
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'-fobjc-gc-only' => 0,
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'-fobjc-gc' => 0,
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'-include' => 1,
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'-idirafter' => 1,
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'-iprefix' => 1,
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'-iquote' => 1,
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'-isystem' => 1,
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'-iwithprefix' => 1,
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'-iwithprefixbefore' => 1
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);
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my %LinkerOptionMap = (
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'-framework' => 1
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);
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my %CompilerLinkerOptionMap = (
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'-isysroot' => 1,
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'-arch' => 1,
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'-v' => 0,
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'-fpascal-strings' => 0,
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'-mmacosx-version-min' => 0 # This is really a 1 argument, but always has '='
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);
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my %IgnoredOptionMap = (
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'-MT' => 1, # Ignore these preprocessor options.
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'-MF' => 1,
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'-fsyntax-only' => 0,
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'-save-temps' => 0,
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'-install_name' => 1,
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'-exported_symbols_list' => 1,
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'-current_version' => 1,
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'-compatibility_version' => 1,
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'-init' => 1,
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'-e' => 1,
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'-seg1addr' => 1,
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'-bundle_loader' => 1,
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'-multiply_defined' => 1,
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'-sectorder' => 3,
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'--param' => 1,
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'-u' => 1
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);
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my %LangMap = (
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'c' => 'c',
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'cpp' => 'c++',
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'cc' => 'c++',
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'i' => 'c-cpp-output',
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'm' => 'objective-c',
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'mi' => 'objective-c-cpp-output'
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);
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my %UniqueOptions = (
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'-isysroot' => 0
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);
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##----------------------------------------------------------------------------##
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# Main Logic.
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##----------------------------------------------------------------------------##
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my $Action = 'link';
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my @CompileOpts;
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my @LinkOpts;
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my @Files;
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my $Lang;
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my $Output;
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my %Uniqued;
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# Forward arguments to gcc.
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my $Status = system($CC,@ARGV);
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if ($Status) { exit($Status >> 8); }
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# Get the analysis options.
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my $Analyses = $ENV{'CCC_ANALYZER_ANALYSIS'};
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if (!defined($Analyses)) { $Analyses = '-checker-cfref'; }
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# Get the store model.
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my $StoreModel = $ENV{'CCC_ANALYZER_STORE_MODEL'};
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# Get the output format.
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my $OutputFormat = $ENV{'CCC_ANALYZER_OUTPUT_FORMAT'};
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# Determine the level of verbosity.
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my $Verbose = 0;
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if (defined $ENV{CCC_ANALYZER_VERBOSE}) { $Verbose = 1; }
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if (defined $ENV{CCC_ANALYZER_LOG}) { $Verbose = 2; }
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# Determine what clang executable to use.
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my $Clang = $ENV{'CLANG'};
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if (!defined $Clang) { $Clang = 'clang'; }
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# Get the HTML output directory.
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my $HtmlDir = $ENV{'CCC_ANALYZER_HTML'};
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my %ArchsSeen;
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# Process the arguments.
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foreach (my $i = 0; $i < scalar(@ARGV); ++$i) {
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my $Arg = $ARGV[$i];
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my ($ArgKey) = split /=/,$Arg,2;
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# Modes ccc-analyzer supports
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if ($Arg eq '-E') { $Action = 'preprocess'; }
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elsif ($Arg eq '-c') { $Action = 'compile'; }
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elsif ($Arg =~ /^-print-prog-name/) { exit 0; }
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# Specially handle duplicate cases of -arch
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if ($Arg eq "-arch") {
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my $arch = $ARGV[$i+1];
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$ArchsSeen{$arch} = 1;
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++$i;
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next;
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}
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# Options with possible arguments that should pass through to compiler.
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if (defined $CompileOptionMap{$ArgKey}) {
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my $Cnt = $CompileOptionMap{$ArgKey};
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push @CompileOpts,$Arg;
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while ($Cnt > 0) { ++$i; --$Cnt; push @CompileOpts, $ARGV[$i]; }
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next;
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}
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# Options with possible arguments that should pass through to linker.
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if (defined $LinkerOptionMap{$ArgKey}) {
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my $Cnt = $LinkerOptionMap{$ArgKey};
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push @LinkOpts,$Arg;
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while ($Cnt > 0) { ++$i; --$Cnt; push @LinkOpts, $ARGV[$i]; }
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next;
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}
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# Options with possible arguments that should pass through to both compiler
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# and the linker.
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if (defined $CompilerLinkerOptionMap{$ArgKey}) {
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my $Cnt = $CompilerLinkerOptionMap{$ArgKey};
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# Check if this is an option that should have a unique value, and if so
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# determine if the value was checked before.
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if ($UniqueOptions{$Arg}) {
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if (defined $Uniqued{$Arg}) {
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$i += $Cnt;
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next;
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}
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$Uniqued{$Arg} = 1;
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}
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push @CompileOpts,$Arg;
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push @LinkOpts,$Arg;
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while ($Cnt > 0) {
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++$i; --$Cnt;
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push @CompileOpts, $ARGV[$i];
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push @LinkOpts, $ARGV[$i];
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}
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next;
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}
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# Ignored options.
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if (defined $IgnoredOptionMap{$ArgKey}) {
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my $Cnt = $IgnoredOptionMap{$ArgKey};
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while ($Cnt > 0) {
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++$i; --$Cnt;
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}
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next;
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}
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# Compile mode flags.
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if ($Arg =~ /^-[D,I,U](.*)$/) {
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my $Tmp = $Arg;
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if ($1 eq '') {
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# FIXME: Check if we are going off the end.
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++$i;
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$Tmp = $Arg . $ARGV[$i];
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}
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push @CompileOpts,$Tmp;
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next;
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}
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# Language.
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if ($Arg eq '-x') {
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$Lang = $ARGV[$i+1];
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++$i; next;
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}
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# Output file.
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if ($Arg eq '-o') {
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++$i;
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$Output = $ARGV[$i];
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next;
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}
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# Get the link mode.
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if ($Arg =~ /^-[l,L,O]/) {
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if ($Arg eq '-O') { push @LinkOpts,'-O1'; }
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elsif ($Arg eq '-Os') { push @LinkOpts,'-O2'; }
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else { push @LinkOpts,$Arg; }
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next;
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}
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if ($Arg =~ /^-std=/) {
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push @CompileOpts,$Arg;
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next;
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}
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# if ($Arg =~ /^-f/) {
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# # FIXME: Not sure if the remaining -fxxxx options have no arguments.
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# push @CompileOpts,$Arg;
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# push @LinkOpts,$Arg; # FIXME: Not sure if these are link opts.
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# }
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# Get the compiler/link mode.
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if ($Arg =~ /^-F(.+)$/) {
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my $Tmp = $Arg;
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if ($1 eq '') {
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# FIXME: Check if we are going off the end.
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++$i;
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$Tmp = $Arg . $ARGV[$i];
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}
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push @CompileOpts,$Tmp;
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push @LinkOpts,$Tmp;
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next;
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}
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# Input files.
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if ($Arg eq '-filelist') {
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# FIXME: Make sure we aren't walking off the end.
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open(IN, $ARGV[$i+1]);
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while (<IN>) { s/\015?\012//; push @Files,$_; }
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close(IN);
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++$i; next;
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}
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if (!($Arg =~ /^-/)) {
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push @Files,$Arg; next;
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}
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}
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if ($Action eq 'compile' or $Action eq 'link') {
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foreach my $file (@Files) {
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# Determine the language for the file.
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my $FileLang = $Lang;
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if (!defined($FileLang)) {
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# Infer the language from the extension.
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if ($file =~ /[.]([^.]+)$/) {
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$FileLang = $LangMap{$1};
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}
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}
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next if (!defined $FileLang);
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my @AnalyzeArgs;
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if ($FileLang ne 'unknown') {
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push @AnalyzeArgs,'-x';
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push @AnalyzeArgs,$FileLang;
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}
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if (defined $StoreModel) {
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push @AnalyzeArgs, $StoreModel;
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}
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if (defined $OutputFormat) {
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push @AnalyzeArgs, "-analyzer-output-" . $OutputFormat;
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}
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push @AnalyzeArgs,@CompileOpts;
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push @AnalyzeArgs,$file;
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my @Archs = keys %ArchsSeen;
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if (scalar @Archs) {
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foreach my $arch (@Archs) {
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my @NewArgs;
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push @NewArgs, '-arch';
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push @NewArgs, $arch;
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push @NewArgs, @AnalyzeArgs;
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Analyze($Clang, \@NewArgs, $FileLang, $Output,
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$Verbose, $HtmlDir, $file, $Analyses);
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}
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}
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else {
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Analyze($Clang, \@AnalyzeArgs, $FileLang, $Output,
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$Verbose, $HtmlDir, $file, $Analyses);
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}
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}
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}
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exit($Status >> 8);
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