| #!/usr/dcs/software/supported/bin/perl -w |
| # LLVM Web Demo script |
| # |
| |
| use strict; |
| use CGI; |
| use POSIX; |
| use Mail::Send; |
| |
| $| = 1; |
| |
| my $ROOT = "/tmp/webcompile"; |
| #my $ROOT = "/home/vadve/lattner/webcompile"; |
| |
| open( STDERR, ">&STDOUT" ) or die "can't redirect stderr to stdout"; |
| |
| if ( !-d $ROOT ) { mkdir( $ROOT, 0777 ); } |
| |
| my $LOGFILE = "$ROOT/log.txt"; |
| my $FORM_URL = 'index.cgi'; |
| my $MAILADDR = 'sabre@nondot.org'; |
| my $CONTACT_ADDRESS = 'Questions or comments? Email the <a href="http://lists.llvm.org/mailman/listinfo/llvm-dev">LLVM-dev mailing list</a>.'; |
| my $LOGO_IMAGE_URL = 'cathead.png'; |
| my $TIMEOUTAMOUNT = 20; |
| $ENV{'LD_LIBRARY_PATH'} = '/home/vadve/shared/localtools/fc1/lib/'; |
| |
| my @PREPENDPATHDIRS = |
| ( |
| '/home/vadve/shared/llvm-gcc4.0-2.1/bin/', |
| '/home/vadve/shared/llvm-2.1/Release/bin'); |
| |
| my $defaultsrc = "#include <stdio.h>\n#include <stdlib.h>\n\n" . |
| "int power(int X) {\n if (X == 0) return 1;\n" . |
| " return X*power(X-1);\n}\n\n" . |
| "int main(int argc, char **argv) {\n" . |
| " printf(\"%d\\n\", power(atoi(argv[0])));\n}\n"; |
| |
| sub getname { |
| my ($extension) = @_; |
| for ( my $count = 0 ; ; $count++ ) { |
| my $name = |
| sprintf( "$ROOT/_%d_%d%s", $$, $count, $extension ); |
| if ( !-f $name ) { return $name; } |
| } |
| } |
| |
| my $c; |
| |
| sub barf { |
| print "<b>", @_, "</b>\n"; |
| print $c->end_html; |
| system("rm -f $ROOT/locked"); |
| exit 1; |
| } |
| |
| sub writeIntoFile { |
| my $extension = shift @_; |
| my $contents = join "", @_; |
| my $name = getname($extension); |
| local (*FILE); |
| open( FILE, ">$name" ) or barf("Can't write to $name: $!"); |
| print FILE $contents; |
| close FILE; |
| return $name; |
| } |
| |
| sub addlog { |
| my ( $source, $pid, $result ) = @_; |
| open( LOG, ">>$LOGFILE" ); |
| my $time = scalar localtime; |
| my $remotehost = $ENV{'REMOTE_ADDR'}; |
| print LOG "[$time] [$remotehost]: $pid\n"; |
| print LOG "<<<\n$source\n>>>\nResult is: <<<\n$result\n>>>\n"; |
| close LOG; |
| } |
| |
| sub dumpFile { |
| my ( $header, $file ) = @_; |
| my $result; |
| open( FILE, "$file" ) or barf("Can't read $file: $!"); |
| while (<FILE>) { |
| $result .= $_; |
| } |
| close FILE; |
| my $UnhilightedResult = $result; |
| my $HtmlResult = |
| "<h3>$header</h3>\n<pre>\n" . $c->escapeHTML($result) . "\n</pre>\n"; |
| if (wantarray) { |
| return ( $UnhilightedResult, $HtmlResult ); |
| } |
| else { |
| return $HtmlResult; |
| } |
| } |
| |
| sub syntaxHighlightLLVM { |
| my ($input) = @_; |
| $input =~ s@\b(void|i8|i1|i16|i32|i64|float|double|type|label|opaque)\b@<span class="llvm_type">$1</span>@g; |
| $input =~ s@\b(add|sub|mul|div|rem|and|or|xor|setne|seteq|setlt|setgt|setle|setge|phi|tail|call|cast|to|shl|shr|vaarg|vanext|ret|br|switch|invoke|unwind|malloc|alloca|free|load|store|getelementptr|begin|end|true|false|declare|global|constant|const|internal|uninitialized|external|implementation|linkonce|weak|appending|null|to|except|not|target|endian|pointersize|big|little|volatile)\b@<span class="llvm_keyword">$1</span>@g; |
| |
| # Add links to the FAQ. |
| $input =~ s@(_ZNSt8ios_base4Init[DC]1Ev)@<a href="../docs/FAQ.html#iosinit">$1</a>@g; |
| $input =~ s@\bundef\b@<a href="../docs/FAQ.html#undef">undef</a>@g; |
| return $input; |
| } |
| |
| sub mailto { |
| my ( $recipient, $body ) = @_; |
| my $msg = |
| new Mail::Send( Subject => "LLVM Demo Page Run", To => $recipient ); |
| my $fh = $msg->open(); |
| print $fh $body; |
| $fh->close(); |
| } |
| |
| $c = new CGI; |
| print $c->header; |
| |
| print <<EOF; |
| <html> |
| <head> |
| <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> |
| <title>Try out LLVM in your browser!</title> |
| <style> |
| \@import url("syntax.css"); |
| \@import url("http://llvm.org/llvm.css"); |
| </style> |
| </head> |
| <body leftmargin="10" marginwidth="10"> |
| |
| <div class="www_sectiontitle"> |
| Try out LLVM in your browser! |
| </div> |
| |
| <table border=0><tr><td> |
| <img align=right width=100 height=111 src="$LOGO_IMAGE_URL"> |
| </td><td> |
| EOF |
| |
| if ( -f "$ROOT/locked" ) { |
| my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size,$atime,$locktime) = |
| stat("$ROOT/locked"); |
| my $currtime = time(); |
| if ($locktime + 60 > $currtime) { |
| print "This page is already in use by someone else at this "; |
| print "time, try reloading in a second or two. Meow!</td></tr></table>'\n"; |
| exit 0; |
| } |
| } |
| |
| system("touch $ROOT/locked"); |
| |
| print <<END; |
| Bitter Melon the cat says, paste a C/C++ program in the text box or upload |
| one from your computer, and you can see LLVM compile it, meow!! |
| </td></tr></table><p> |
| END |
| |
| print $c->start_multipart_form( 'POST', $FORM_URL ); |
| |
| my $source = $c->param('source'); |
| |
| |
| # Start the user out with something valid if no code. |
| $source = $defaultsrc if (!defined($source)); |
| |
| print '<table border="0"><tr><td>'; |
| |
| print "Type your source code in below: (<a href='DemoInfo.html#hints'>hints and |
| advice</a>)<br>\n"; |
| |
| print $c->textarea( |
| -name => "source", |
| -rows => 16, |
| -columns => 60, |
| -default => $source |
| ), "<br>"; |
| |
| print "Or upload a file: "; |
| print $c->filefield( -name => 'uploaded_file', -default => '' ); |
| |
| print "<p />\n"; |
| |
| |
| print '<p></td><td valign=top>'; |
| |
| print "<center><h3>General Options</h3></center>"; |
| |
| print "Source language: ", |
| $c->radio_group( |
| -name => 'language', |
| -values => [ 'C', 'C++' ], |
| -default => 'C' |
| ), "<p>"; |
| |
| print $c->checkbox( |
| -name => 'linkopt', |
| -label => 'Run link-time optimizer', |
| -checked => 'checked' |
| ),' <a href="DemoInfo.html#lto">?</a><br>'; |
| |
| print $c->checkbox( |
| -name => 'showstats', |
| -label => 'Show detailed pass statistics' |
| ), ' <a href="DemoInfo.html#stats">?</a><br>'; |
| |
| print $c->checkbox( |
| -name => 'cxxdemangle', |
| -label => 'Demangle C++ names' |
| ),' <a href="DemoInfo.html#demangle">?</a><p>'; |
| |
| |
| print "<center><h3>Output Options</h3></center>"; |
| |
| print $c->checkbox( |
| -name => 'showbcanalysis', |
| -label => 'Show detailed bytecode analysis' |
| ),' <a href="DemoInfo.html#bcanalyzer">?</a><br>'; |
| |
| print $c->checkbox( |
| -name => 'showllvm2cpp', |
| -label => 'Show LLVM C++ API code' |
| ), ' <a href="DemoInfo.html#llvm2cpp">?</a>'; |
| |
| print "</td></tr></table>"; |
| |
| print "<center>", $c->submit(-value=> 'Compile Source Code'), |
| "</center>\n", $c->endform; |
| |
| print "\n<p>If you have questions about the LLVM code generated by the |
| front-end, please check the <a href='/docs/FAQ.html#cfe_code'>FAQ</a> and |
| the demo page <a href='DemoInfo.html#hints'>hints section</a>. |
| </p>\n"; |
| |
| $ENV{'PATH'} = ( join ( ':', @PREPENDPATHDIRS ) ) . ":" . $ENV{'PATH'}; |
| |
| sub sanitychecktools { |
| my $sanitycheckfail = ''; |
| |
| # insert tool-specific sanity checks here |
| $sanitycheckfail .= ' llvm-dis' |
| if `llvm-dis --help 2>&1` !~ /ll disassembler/; |
| |
| $sanitycheckfail .= ' llvm-gcc' |
| if ( `llvm-gcc --version 2>&1` !~ /Free Software Foundation/ ); |
| |
| $sanitycheckfail .= ' llvm-ld' |
| if `llvm-ld --help 2>&1` !~ /llvm linker/; |
| |
| $sanitycheckfail .= ' llvm-bcanalyzer' |
| if `llvm-bcanalyzer --help 2>&1` !~ /bcanalyzer/; |
| |
| barf( |
| "<br/>The demo page is currently unavailable. [tools: ($sanitycheckfail ) failed sanity check]" |
| ) |
| if $sanitycheckfail; |
| } |
| |
| sanitychecktools(); |
| |
| sub try_run { |
| my ( $program, $commandline, $outputFile ) = @_; |
| my $retcode = 0; |
| |
| eval { |
| local $SIG{ALRM} = sub { die "timeout"; }; |
| alarm $TIMEOUTAMOUNT; |
| $retcode = system($commandline); |
| alarm 0; |
| }; |
| if ( $@ and $@ =~ /timeout/ ) { |
| barf("Program $program took too long, compile time limited for the web script, sorry!\n"); |
| } |
| if ( -s $outputFile ) { |
| print scalar dumpFile( "Output from $program", $outputFile ); |
| } |
| #print "<p>Finished dumping command output.</p>\n"; |
| if ( WIFEXITED($retcode) && WEXITSTATUS($retcode) != 0 ) { |
| barf( |
| "$program exited with an error. Please correct source and resubmit.<p>\n" . |
| "Please note that this form only allows fully formed and correct source" . |
| " files. It will not compile fragments of code.<p>" |
| ); |
| } |
| if ( WIFSIGNALED($retcode) != 0 ) { |
| my $sig = WTERMSIG($retcode); |
| barf( |
| "Ouch, $program caught signal $sig. Sorry, better luck next time!\n" |
| ); |
| } |
| } |
| |
| my %suffixes = ( |
| 'Java' => '.java', |
| 'JO99' => '.jo9', |
| 'C' => '.c', |
| 'C++' => '.cc', |
| 'Stacker' => '.st', |
| 'preprocessed C' => '.i', |
| 'preprocessed C++' => '.ii' |
| ); |
| my %languages = ( |
| '.jo9' => 'JO99', |
| '.java' => 'Java', |
| '.c' => 'C', |
| '.i' => 'preprocessed C', |
| '.ii' => 'preprocessed C++', |
| '.cc' => 'C++', |
| '.cpp' => 'C++', |
| '.st' => 'Stacker' |
| ); |
| |
| my $uploaded_file_name = $c->param('uploaded_file'); |
| if ($uploaded_file_name) { |
| if ($source) { |
| barf( |
| "You must choose between uploading a file and typing code in. You can't do both at the same time." |
| ); |
| } |
| $uploaded_file_name =~ s/^.*(\.[A-Za-z]+)$/$1/; |
| my $language = $languages{$uploaded_file_name}; |
| $c->param( 'language', $language ); |
| |
| print "<p>Processing uploaded file. It looks like $language.</p>\n"; |
| my $fh = $c->upload('uploaded_file'); |
| if ( !$fh ) { |
| barf( "Error uploading file: " . $c->cgi_error ); |
| } |
| while (<$fh>) { |
| $source .= $_; |
| } |
| close $fh; |
| } |
| |
| if ($c->param('source')) { |
| print $c->hr; |
| my $extension = $suffixes{ $c->param('language') }; |
| barf "Unknown language; can't compile\n" unless $extension; |
| |
| # Add a newline to the source here to avoid a warning from gcc. |
| $source .= "\n"; |
| |
| # Avoid security hole due to #including bad stuff. |
| $source =~ |
| s@(\n)?#include.*[<"](.*\.\..*)[">].*\n@$1#error "invalid #include file $2 detected"\n@g; |
| |
| my $inputFile = writeIntoFile( $extension, $source ); |
| my $pid = $$; |
| |
| my $bytecodeFile = getname(".bc"); |
| my $outputFile = getname(".llvm-gcc.out"); |
| my $timerFile = getname(".llvm-gcc.time"); |
| |
| my $stats = ''; |
| if ( $extension eq ".st" ) { |
| $stats = "-stats -time-passes " |
| if ( $c->param('showstats') ); |
| try_run( "llvm Stacker front-end (stkrc)", |
| "stkrc $stats -o $bytecodeFile $inputFile > $outputFile 2>&1", |
| $outputFile ); |
| } else { |
| #$stats = "-Wa,--stats,--time-passes,--info-output-file=$timerFile" |
| $stats = "-ftime-report" |
| if ( $c->param('showstats') ); |
| try_run( "llvm C/C++ front-end (llvm-gcc)", |
| "llvm-gcc -emit-llvm -W -Wall -O2 $stats -o $bytecodeFile -c $inputFile > $outputFile 2>&1", |
| $outputFile ); |
| } |
| |
| if ( $c->param('showstats') && -s $timerFile ) { |
| my ( $UnhilightedResult, $HtmlResult ) = |
| dumpFile( "Statistics for front-end compilation", $timerFile ); |
| print "$HtmlResult\n"; |
| } |
| |
| if ( $c->param('linkopt') ) { |
| my $stats = ''; |
| my $outputFile = getname(".gccld.out"); |
| my $timerFile = getname(".gccld.time"); |
| $stats = "--stats --time-passes --info-output-file=$timerFile" |
| if ( $c->param('showstats') ); |
| my $tmpFile = getname(".bc"); |
| try_run( |
| "optimizing linker (llvm-ld)", |
| "llvm-ld $stats -o=$tmpFile $bytecodeFile > $outputFile 2>&1", |
| $outputFile |
| ); |
| system("mv $tmpFile.bc $bytecodeFile"); |
| system("rm $tmpFile"); |
| |
| if ( $c->param('showstats') && -s $timerFile ) { |
| my ( $UnhilightedResult, $HtmlResult ) = |
| dumpFile( "Statistics for optimizing linker", $timerFile ); |
| print "$HtmlResult\n"; |
| } |
| } |
| |
| print " Bytecode size is ", -s $bytecodeFile, " bytes.\n"; |
| |
| my $disassemblyFile = getname(".ll"); |
| try_run( "llvm-dis", |
| "llvm-dis -o=$disassemblyFile $bytecodeFile > $outputFile 2>&1", |
| $outputFile ); |
| |
| if ( $c->param('cxxdemangle') ) { |
| print " Demangling disassembler output.\n"; |
| my $tmpFile = getname(".ll"); |
| system("c++filt < $disassemblyFile > $tmpFile 2>&1"); |
| system("mv $tmpFile $disassemblyFile"); |
| } |
| |
| my ( $UnhilightedResult, $HtmlResult ); |
| if ( -s $disassemblyFile ) { |
| ( $UnhilightedResult, $HtmlResult ) = |
| dumpFile( "Output from LLVM disassembler", $disassemblyFile ); |
| print syntaxHighlightLLVM($HtmlResult); |
| } |
| else { |
| print "<p>Hmm, that's weird, llvm-dis didn't produce any output.</p>\n"; |
| } |
| |
| if ( $c->param('showbcanalysis') ) { |
| my $analFile = getname(".bca"); |
| try_run( "llvm-bcanalyzer", "llvm-bcanalyzer $bytecodeFile > $analFile 2>&1", |
| $analFile); |
| } |
| if ($c->param('showllvm2cpp') ) { |
| my $l2cppFile = getname(".l2cpp"); |
| try_run("llvm2cpp","llvm2cpp $bytecodeFile -o $l2cppFile 2>&1", |
| $l2cppFile); |
| } |
| |
| # Get the source presented by the user to CGI, convert newline sequences to simple \n. |
| my $actualsrc = $c->param('source'); |
| $actualsrc =~ s/\015\012/\n/go; |
| # Don't log this or mail it if it is the default code. |
| if ($actualsrc ne $defaultsrc) { |
| addlog( $source, $pid, $UnhilightedResult ); |
| |
| my ( $ip, $host, $lg, $lines ); |
| chomp( $lines = `wc -l < $inputFile` ); |
| $lg = $c->param('language'); |
| $ip = $c->remote_addr(); |
| chomp( $host = `host $ip` ) if $ip; |
| mailto( $MAILADDR, |
| "--- Query: ---\nFrom: ($ip) $host\nInput: $lines lines of $lg\n" |
| . "C++ demangle = " |
| . ( $c->param('cxxdemangle') ? 1 : 0 ) |
| . ", Link opt = " |
| . ( $c->param('linkopt') ? 1 : 0 ) . "\n\n" |
| . ", Show stats = " |
| . ( $c->param('showstats') ? 1 : 0 ) . "\n\n" |
| . "--- Source: ---\n$source\n" |
| . "--- Result: ---\n$UnhilightedResult\n" ); |
| } |
| unlink( $inputFile, $bytecodeFile, $outputFile, $disassemblyFile ); |
| } |
| |
| print $c->hr, "<address>$CONTACT_ADDRESS</address>", $c->end_html; |
| system("rm $ROOT/locked"); |
| exit 0; |
