Delete bundled copy of OpenSSL and replace with README.

openssl/crypto/perlasm/x86_64-xlate.pl

Index: openssl/crypto/perlasm/x86_64-xlate.pl
diff --git a/openssl/crypto/perlasm/x86_64-xlate.pl b/openssl/crypto/perlasm/x86_64-xlate.pl
deleted file mode 100755
index 56d9b64b6fb32d6bdbd415da2b4aafcc76646ed4..0000000000000000000000000000000000000000
--- a/openssl/crypto/perlasm/x86_64-xlate.pl
+++ /dev/null
@@ -1,1080 +0,0 @@
-#!/usr/bin/env perl
-
-# Ascetic x86_64 AT&T to MASM/NASM assembler translator by <appro>.
-#
-# Why AT&T to MASM and not vice versa? Several reasons. Because AT&T
-# format is way easier to parse. Because it's simpler to "gear" from
-# Unix ABI to Windows one [see cross-reference "card" at the end of
-# file]. Because Linux targets were available first...
-#
-# In addition the script also "distills" code suitable for GNU
-# assembler, so that it can be compiled with more rigid assemblers,
-# such as Solaris /usr/ccs/bin/as.
-#
-# This translator is not designed to convert *arbitrary* assembler
-# code from AT&T format to MASM one. It's designed to convert just
-# enough to provide for dual-ABI OpenSSL modules development...
-# There *are* limitations and you might have to modify your assembler
-# code or this script to achieve the desired result...
-#
-# Currently recognized limitations:
-#
-# - can't use multiple ops per line;
-#
-# Dual-ABI styling rules.
-#
-# 1. Adhere to Unix register and stack layout [see cross-reference
-#    ABI "card" at the end for explanation].
-# 2. Forget about "red zone," stick to more traditional blended
-#    stack frame allocation. If volatile storage is actually required
-#    that is. If not, just leave the stack as is.
-# 3. Functions tagged with ".type name,@function" get crafted with
-#    unified Win64 prologue and epilogue automatically. If you want
-#    to take care of ABI differences yourself, tag functions as
-#    ".type name,@abi-omnipotent" instead.
-# 4. To optimize the Win64 prologue you can specify number of input
-#    arguments as ".type name,@function,N." Keep in mind that if N is
-#    larger than 6, then you *have to* write "abi-omnipotent" code,
-#    because >6 cases can't be addressed with unified prologue.
-# 5. Name local labels as .L*, do *not* use dynamic labels such as 1:
-#    (sorry about latter).
-# 6. Don't use [or hand-code with .byte] "rep ret." "ret" mnemonic is
-#    required to identify the spots, where to inject Win64 epilogue!
-#    But on the pros, it's then prefixed with rep automatically:-)
-# 7. Stick to explicit ip-relative addressing. If you have to use
-#    GOTPCREL addressing, stick to mov symbol@GOTPCREL(%rip),%r??.
-#    Both are recognized and translated to proper Win64 addressing
-#    modes. To support legacy code a synthetic directive, .picmeup,
-#    is implemented. It puts address of the *next* instruction into
-#    target register, e.g.:
-#
-#		.picmeup	%rax
-#		lea		.Label-.(%rax),%rax
-#
-# 8. In order to provide for structured exception handling unified
-#    Win64 prologue copies %rsp value to %rax. For further details
-#    see SEH paragraph at the end.
-# 9. .init segment is allowed to contain calls to functions only.
-# a. If function accepts more than 4 arguments *and* >4th argument
-#    is declared as non 64-bit value, do clear its upper part.
-
-my $flavour = shift;
-my $output  = shift;
-if ($flavour =~ /\./) { $output = $flavour; undef $flavour; }
-
-open STDOUT,">$output" || die "can't open $output: $!"
-	if (defined($output));
-
-my $gas=1;	$gas=0 if ($output =~ /\.asm$/);
-my $elf=1;	$elf=0 if (!$gas);
-my $win64=0;
-my $prefix="";
-my $decor=".L";
-
-my $masmref=8 + 50727*2**-32;	# 8.00.50727 shipped with VS2005
-my $masm=0;
-my $PTR=" PTR";
-
-my $nasmref=2.03;
-my $nasm=0;
-
-if    ($flavour eq "mingw64")	{ $gas=1; $elf=0; $win64=1;
-				  $prefix=`echo __USER_LABEL_PREFIX__ | $ENV{CC} -E -P -`;
-				  chomp($prefix);
-				}
-elsif ($flavour eq "macosx")	{ $gas=1; $elf=0; $prefix="_"; $decor="L\$"; }
-elsif ($flavour eq "masm")	{ $gas=0; $elf=0; $masm=$masmref; $win64=1; $decor="\$L\$"; }
-elsif ($flavour eq "nasm")	{ $gas=0; $elf=0; $nasm=$nasmref; $win64=1; $decor="\$L\$"; $PTR=""; }
-elsif (!$gas)
-{   if ($ENV{ASM} =~ m/nasm/ && `nasm -v` =~ m/version ([0-9]+)\.([0-9]+)/i)
-    {	$nasm = $1 + $2*0.01; $PTR="";  }
-    elsif (`ml64 2>&1` =~ m/Version ([0-9]+)\.([0-9]+)(\.([0-9]+))?/)
-    {	$masm = $1 + $2*2**-16 + $4*2**-32;   }
-    die "no assembler found on %PATH" if (!($nasm || $masm));
-    $win64=1;
-    $elf=0;
-    $decor="\$L\$";
-}
-
-my $current_segment;
-my $current_function;
-my %globals;
-
-{ package opcode;	# pick up opcodes
-    sub re {
-	my	$self = shift;	# single instance in enough...
-	local	*line = shift;
-	undef	$ret;
-
-	if ($line =~ /^([a-z][a-z0-9]*)/i) {
-	    $self->{op} = $1;
-	    $ret = $self;
-	    $line = substr($line,@+[0]); $line =~ s/^\s+//;
-
-	    undef $self->{sz};
-	    if ($self->{op} =~ /^(movz)x?([bw]).*/) {	# movz is pain...
-		$self->{op} = $1;
-		$self->{sz} = $2;
-	    } elsif ($self->{op} =~ /call|jmp/) {
-		$self->{sz} = "";
-	    } elsif ($self->{op} =~ /^p/ && $' !~ /^(ush|op|insrw)/) { # SSEn
-		$self->{sz} = "";
-	    } elsif ($self->{op} =~ /^v/) { # VEX
-		$self->{sz} = "";
-	    } elsif ($self->{op} =~ /movq/ && $line =~ /%xmm/) {
-		$self->{sz} = "";
-	    } elsif ($self->{op} =~ /([a-z]{3,})([qlwb])$/) {
-		$self->{op} = $1;
-		$self->{sz} = $2;
-	    }
-	}
-	$ret;
-    }
-    sub size {
-	my $self = shift;
-	my $sz   = shift;
-	$self->{sz} = $sz if (defined($sz) && !defined($self->{sz}));
-	$self->{sz};
-    }
-    sub out {
-	my $self = shift;
-	if ($gas) {
-	    if ($self->{op} eq "movz") {	# movz is pain...
-		sprintf "%s%s%s",$self->{op},$self->{sz},shift;
-	    } elsif ($self->{op} =~ /^set/) { 
-		"$self->{op}";
-	    } elsif ($self->{op} eq "ret") {
-		my $epilogue = "";
-		if ($win64 && $current_function->{abi} eq "svr4") {
-		    $epilogue = "movq	8(%rsp),%rdi\n\t" .
-				"movq	16(%rsp),%rsi\n\t";
-		}
-	    	$epilogue . ".byte	0xf3,0xc3";
-	    } elsif ($self->{op} eq "call" && !$elf && $current_segment eq ".init") {
-		".p2align\t3\n\t.quad";
-	    } else {
-		"$self->{op}$self->{sz}";
-	    }
-	} else {
-	    $self->{op} =~ s/^movz/movzx/;
-	    if ($self->{op} eq "ret") {
-		$self->{op} = "";
-		if ($win64 && $current_function->{abi} eq "svr4") {
-		    $self->{op} = "mov	rdi,QWORD${PTR}[8+rsp]\t;WIN64 epilogue\n\t".
-				  "mov	rsi,QWORD${PTR}[16+rsp]\n\t";
-	    	}
-		$self->{op} .= "DB\t0F3h,0C3h\t\t;repret";
-	    } elsif ($self->{op} =~ /^(pop|push)f/) {
-		$self->{op} .= $self->{sz};
-	    } elsif ($self->{op} eq "call" && $current_segment eq ".CRT\$XCU") {
-		$self->{op} = "\tDQ";
-	    } 
-	    $self->{op};
-	}
-    }
-    sub mnemonic {
-	my $self=shift;
-	my $op=shift;
-	$self->{op}=$op if (defined($op));
-	$self->{op};
-    }
-}
-{ package const;	# pick up constants, which start with $
-    sub re {
-	my	$self = shift;	# single instance in enough...
-	local	*line = shift;
-	undef	$ret;
-
-	if ($line =~ /^\$([^,]+)/) {
-	    $self->{value} = $1;
-	    $ret = $self;
-	    $line = substr($line,@+[0]); $line =~ s/^\s+//;
-	}
-	$ret;
-    }
-    sub out {
-    	my $self = shift;
-
-	if ($gas) {
-	    # Solaris /usr/ccs/bin/as can't handle multiplications
-	    # in $self->{value}
-	    $self->{value} =~ s/(?<![\w\$\.])(0x?[0-9a-f]+)/oct($1)/egi;
-	    $self->{value} =~ s/([0-9]+\s*[\*\/\%]\s*[0-9]+)/eval($1)/eg;
-	    sprintf "\$%s",$self->{value};
-	} else {
-	    $self->{value} =~ s/(0b[0-1]+)/oct($1)/eig;
-	    $self->{value} =~ s/0x([0-9a-f]+)/0$1h/ig if ($masm);
-	    sprintf "%s",$self->{value};
-	}
-    }
-}
-{ package ea;		# pick up effective addresses: expr(%reg,%reg,scale)
-    sub re {
-	my	$self = shift;	# single instance in enough...
-	local	*line = shift;
-	undef	$ret;
-
-	# optional * ---vvv--- appears in indirect jmp/call
-	if ($line =~ /^(\*?)([^\(,]*)\(([%\w,]+)\)/) {
-	    $self->{asterisk} = $1;
-	    $self->{label} = $2;
-	    ($self->{base},$self->{index},$self->{scale})=split(/,/,$3);
-	    $self->{scale} = 1 if (!defined($self->{scale}));
-	    $ret = $self;
-	    $line = substr($line,@+[0]); $line =~ s/^\s+//;
-
-	    if ($win64 && $self->{label} =~ s/\@GOTPCREL//) {
-		die if (opcode->mnemonic() ne "mov");
-		opcode->mnemonic("lea");
-	    }
-	    $self->{base}  =~ s/^%//;
-	    $self->{index} =~ s/^%// if (defined($self->{index}));
-	}
-	$ret;
-    }
-    sub size {}
-    sub out {
-    	my $self = shift;
-	my $sz = shift;
-
-	$self->{label} =~ s/([_a-z][_a-z0-9]*)/$globals{$1} or $1/gei;
-	$self->{label} =~ s/\.L/$decor/g;
-
-	# Silently convert all EAs to 64-bit. This is required for
-	# elder GNU assembler and results in more compact code,
-	# *but* most importantly AES module depends on this feature!
-	$self->{index} =~ s/^[er](.?[0-9xpi])[d]?$/r\1/;
-	$self->{base}  =~ s/^[er](.?[0-9xpi])[d]?$/r\1/;
-
-	# Solaris /usr/ccs/bin/as can't handle multiplications
-	# in $self->{label}, new gas requires sign extension...
-	use integer;
-	$self->{label} =~ s/(?<![\w\$\.])(0x?[0-9a-f]+)/oct($1)/egi;
-	$self->{label} =~ s/([0-9]+\s*[\*\/\%]\s*[0-9]+)/eval($1)/eg;
-	$self->{label} =~ s/([0-9]+)/$1<<32>>32/eg;
-
-	if ($gas) {
-	    $self->{label} =~ s/^___imp_/__imp__/   if ($flavour eq "mingw64");
-
-	    if (defined($self->{index})) {
-		sprintf "%s%s(%s,%%%s,%d)",$self->{asterisk},
-					$self->{label},
-					$self->{base}?"%$self->{base}":"",
-					$self->{index},$self->{scale};
-	    } else {
-		sprintf "%s%s(%%%s)",	$self->{asterisk},$self->{label},$self->{base};
-	    }
-	} else {
-	    %szmap = (	b=>"BYTE$PTR", w=>"WORD$PTR", l=>"DWORD$PTR",
-	    		q=>"QWORD$PTR",o=>"OWORD$PTR",x=>"XMMWORD$PTR" );
-
-	    $self->{label} =~ s/\./\$/g;
-	    $self->{label} =~ s/(?<![\w\$\.])0x([0-9a-f]+)/0$1h/ig;
-	    $self->{label} = "($self->{label})" if ($self->{label} =~ /[\*\+\-\/]/);
-	    $sz="q" if ($self->{asterisk} || opcode->mnemonic() eq "movq");
-	    $sz="l" if (opcode->mnemonic() eq "movd");
-
-	    if (defined($self->{index})) {
-		sprintf "%s[%s%s*%d%s]",$szmap{$sz},
-					$self->{label}?"$self->{label}+":"",
-					$self->{index},$self->{scale},
-					$self->{base}?"+$self->{base}":"";
-	    } elsif ($self->{base} eq "rip") {
-		sprintf "%s[%s]",$szmap{$sz},$self->{label};
-	    } else {
-		sprintf "%s[%s%s]",$szmap{$sz},
-					$self->{label}?"$self->{label}+":"",
-					$self->{base};
-	    }
-	}
-    }
-}
-{ package register;	# pick up registers, which start with %.
-    sub re {
-	my	$class = shift;	# muliple instances...
-	my	$self = {};
-	local	*line = shift;
-	undef	$ret;
-
-	# optional * ---vvv--- appears in indirect jmp/call
-	if ($line =~ /^(\*?)%(\w+)/) {
-	    bless $self,$class;
-	    $self->{asterisk} = $1;
-	    $self->{value} = $2;
-	    $ret = $self;
-	    $line = substr($line,@+[0]); $line =~ s/^\s+//;
-	}
-	$ret;
-    }
-    sub size {
-	my	$self = shift;
-	undef	$ret;
-
-	if    ($self->{value} =~ /^r[\d]+b$/i)	{ $ret="b"; }
-	elsif ($self->{value} =~ /^r[\d]+w$/i)	{ $ret="w"; }
-	elsif ($self->{value} =~ /^r[\d]+d$/i)	{ $ret="l"; }
-	elsif ($self->{value} =~ /^r[\w]+$/i)	{ $ret="q"; }
-	elsif ($self->{value} =~ /^[a-d][hl]$/i){ $ret="b"; }
-	elsif ($self->{value} =~ /^[\w]{2}l$/i)	{ $ret="b"; }
-	elsif ($self->{value} =~ /^[\w]{2}$/i)	{ $ret="w"; }
-	elsif ($self->{value} =~ /^e[a-z]{2}$/i){ $ret="l"; }
-
-	$ret;
-    }
-    sub out {
-    	my $self = shift;
-	if ($gas)	{ sprintf "%s%%%s",$self->{asterisk},$self->{value}; }
-	else		{ $self->{value}; }
-    }
-}
-{ package label;	# pick up labels, which end with :
-    sub re {
-	my	$self = shift;	# single instance is enough...
-	local	*line = shift;
-	undef	$ret;
-
-	if ($line =~ /(^[\.\w]+)\:/) {
-	    $self->{value} = $1;
-	    $ret = $self;
-	    $line = substr($line,@+[0]); $line =~ s/^\s+//;
-
-	    $self->{value} =~ s/^\.L/$decor/;
-	}
-	$ret;
-    }
-    sub out {
-	my $self = shift;
-
-	if ($gas) {
-	    my $func = ($globals{$self->{value}} or $self->{value}) . ":";
-	    if ($win64	&&
-			$current_function->{name} eq $self->{value} &&
-			$current_function->{abi} eq "svr4") {
-		$func .= "\n";
-		$func .= "	movq	%rdi,8(%rsp)\n";
-		$func .= "	movq	%rsi,16(%rsp)\n";
-		$func .= "	movq	%rsp,%rax\n";
-		$func .= "${decor}SEH_begin_$current_function->{name}:\n";
-		my $narg = $current_function->{narg};
-		$narg=6 if (!defined($narg));
-		$func .= "	movq	%rcx,%rdi\n" if ($narg>0);
-		$func .= "	movq	%rdx,%rsi\n" if ($narg>1);
-		$func .= "	movq	%r8,%rdx\n"  if ($narg>2);
-		$func .= "	movq	%r9,%rcx\n"  if ($narg>3);
-		$func .= "	movq	40(%rsp),%r8\n" if ($narg>4);
-		$func .= "	movq	48(%rsp),%r9\n" if ($narg>5);
-	    }
-	    $func;
-	} elsif ($self->{value} ne "$current_function->{name}") {
-	    $self->{value} .= ":" if ($masm && $ret!~m/^\$/);
-	    $self->{value} . ":";
-	} elsif ($win64 && $current_function->{abi} eq "svr4") {
-	    my $func =	"$current_function->{name}" .
-			($nasm ? ":" : "\tPROC $current_function->{scope}") .
-			"\n";
-	    $func .= "	mov	QWORD${PTR}[8+rsp],rdi\t;WIN64 prologue\n";
-	    $func .= "	mov	QWORD${PTR}[16+rsp],rsi\n";
-	    $func .= "	mov	rax,rsp\n";
-	    $func .= "${decor}SEH_begin_$current_function->{name}:";
-	    $func .= ":" if ($masm);
-	    $func .= "\n";
-	    my $narg = $current_function->{narg};
-	    $narg=6 if (!defined($narg));
-	    $func .= "	mov	rdi,rcx\n" if ($narg>0);
-	    $func .= "	mov	rsi,rdx\n" if ($narg>1);
-	    $func .= "	mov	rdx,r8\n"  if ($narg>2);
-	    $func .= "	mov	rcx,r9\n"  if ($narg>3);
-	    $func .= "	mov	r8,QWORD${PTR}[40+rsp]\n" if ($narg>4);
-	    $func .= "	mov	r9,QWORD${PTR}[48+rsp]\n" if ($narg>5);
-	    $func .= "\n";
-	} else {
-	   "$current_function->{name}".
-			($nasm ? ":" : "\tPROC $current_function->{scope}");
-	}
-    }
-}
-{ package expr;		# pick up expressioins
-    sub re {
-	my	$self = shift;	# single instance is enough...
-	local	*line = shift;
-	undef	$ret;
-
-	if ($line =~ /(^[^,]+)/) {
-	    $self->{value} = $1;
-	    $ret = $self;
-	    $line = substr($line,@+[0]); $line =~ s/^\s+//;
-
-	    $self->{value} =~ s/\@PLT// if (!$elf);
-	    $self->{value} =~ s/([_a-z][_a-z0-9]*)/$globals{$1} or $1/gei;
-	    $self->{value} =~ s/\.L/$decor/g;
-	}
-	$ret;
-    }
-    sub out {
-	my $self = shift;
-	if ($nasm && opcode->mnemonic()=~m/^j/) {
-	    "NEAR ".$self->{value};
-	} else {
-	    $self->{value};
-	}
-    }
-}
-{ package directive;	# pick up directives, which start with .
-    sub re {
-	my	$self = shift;	# single instance is enough...
-	local	*line = shift;
-	undef	$ret;
-	my	$dir;
-	my	%opcode =	# lea 2f-1f(%rip),%dst; 1: nop; 2:
-		(	"%rax"=>0x01058d48,	"%rcx"=>0x010d8d48,
-			"%rdx"=>0x01158d48,	"%rbx"=>0x011d8d48,
-			"%rsp"=>0x01258d48,	"%rbp"=>0x012d8d48,
-			"%rsi"=>0x01358d48,	"%rdi"=>0x013d8d48,
-			"%r8" =>0x01058d4c,	"%r9" =>0x010d8d4c,
-			"%r10"=>0x01158d4c,	"%r11"=>0x011d8d4c,
-			"%r12"=>0x01258d4c,	"%r13"=>0x012d8d4c,
-			"%r14"=>0x01358d4c,	"%r15"=>0x013d8d4c	);
-
-	if ($line =~ /^\s*(\.\w+)/) {
-	    $dir = $1;
-	    $ret = $self;
-	    undef $self->{value};
-	    $line = substr($line,@+[0]); $line =~ s/^\s+//;
-
-	    SWITCH: for ($dir) {
-		/\.picmeup/ && do { if ($line =~ /(%r[\w]+)/i) {
-			    		$dir="\t.long";
-					$line=sprintf "0x%x,0x90000000",$opcode{$1};
-				    }
-				    last;
-				  };
-		/\.global|\.globl|\.extern/
-			    && do { $globals{$line} = $prefix . $line;
-				    $line = $globals{$line} if ($prefix);
-				    last;
-				  };
-		/\.type/    && do { ($sym,$type,$narg) = split(',',$line);
-				    if ($type eq "\@function") {
-					undef $current_function;
-					$current_function->{name} = $sym;
-					$current_function->{abi}  = "svr4";
-					$current_function->{narg} = $narg;
-					$current_function->{scope} = defined($globals{$sym})?"PUBLIC":"PRIVATE";
-				    } elsif ($type eq "\@abi-omnipotent") {
-					undef $current_function;
-					$current_function->{name} = $sym;
-					$current_function->{scope} = defined($globals{$sym})?"PUBLIC":"PRIVATE";
-				    }
-				    $line =~ s/\@abi\-omnipotent/\@function/;
-				    $line =~ s/\@function.*/\@function/;
-				    last;
-				  };
-		/\.asciz/   && do { if ($line =~ /^"(.*)"$/) {
-					$dir  = ".byte";
-					$line = join(",",unpack("C*",$1),0);
-				    }
-				    last;
-				  };
-		/\.rva|\.long|\.quad/
-			    && do { $line =~ s/([_a-z][_a-z0-9]*)/$globals{$1} or $1/gei;
-				    $line =~ s/\.L/$decor/g;
-				    last;
-				  };
-	    }
-
-	    if ($gas) {
-		$self->{value} = $dir . "\t" . $line;
-
-		if ($dir =~ /\.extern/) {
-		    $self->{value} = ""; # swallow extern
-		} elsif (!$elf && $dir =~ /\.type/) {
-		    $self->{value} = "";
-		    $self->{value} = ".def\t" . ($globals{$1} or $1) . ";\t" .
-				(defined($globals{$1})?".scl 2;":".scl 3;") .
-				"\t.type 32;\t.endef"
-				if ($win64 && $line =~ /([^,]+),\@function/);
-		} elsif (!$elf && $dir =~ /\.size/) {
-		    $self->{value} = "";
-		    if (defined($current_function)) {
-			$self->{value} .= "${decor}SEH_end_$current_function->{name}:"
-				if ($win64 && $current_function->{abi} eq "svr4");
-			undef $current_function;
-		    }
-		} elsif (!$elf && $dir =~ /\.align/) {
-		    $self->{value} = ".p2align\t" . (log($line)/log(2));
-		} elsif ($dir eq ".section") {
-		    $current_segment=$line;
-		    if (!$elf && $current_segment eq ".init") {
-			if	($flavour eq "macosx")	{ $self->{value} = ".mod_init_func"; }
-			elsif	($flavour eq "mingw64")	{ $self->{value} = ".section\t.ctors"; }
-		    }
-		} elsif ($dir =~ /\.(text|data)/) {
-		    $current_segment=".$1";
-		} elsif ($dir =~ /\.hidden/) {
-		    if    ($flavour eq "macosx")  { $self->{value} = ".private_extern\t$prefix$line"; }
-		    elsif ($flavour eq "mingw64") { $self->{value} = ""; }
-		} elsif ($dir =~ /\.comm/) {
-		    $self->{value} = "$dir\t$prefix$line";
-		    $self->{value} =~ s|,([0-9]+),([0-9]+)$|",$1,".log($2)/log(2)|e if ($flavour eq "macosx");
-		}
-		$line = "";
-		return $self;
-	    }
-
-	    # non-gas case or nasm/masm
-	    SWITCH: for ($dir) {
-		/\.text/    && do { my $v=undef;
-				    if ($nasm) {
-					$v="section	.text code align=64\n";
-				    } else {
-					$v="$current_segment\tENDS\n" if ($current_segment);
-					$current_segment = ".text\$";
-					$v.="$current_segment\tSEGMENT ";
-					$v.=$masm>=$masmref ? "ALIGN(64)" : "PAGE";
-					$v.=" 'CODE'";
-				    }
-				    $self->{value} = $v;
-				    last;
-				  };
-		/\.data/    && do { my $v=undef;
-				    if ($nasm) {
-					$v="section	.data data align=8\n";
-				    } else {
-					$v="$current_segment\tENDS\n" if ($current_segment);
-					$current_segment = "_DATA";
-					$v.="$current_segment\tSEGMENT";
-				    }
-				    $self->{value} = $v;
-				    last;
-				  };
-		/\.section/ && do { my $v=undef;
-				    $line =~ s/([^,]*).*/$1/;
-				    $line = ".CRT\$XCU" if ($line eq ".init");
-				    if ($nasm) {
-					$v="section	$line";
-					if ($line=~/\.([px])data/) {
-					    $v.=" rdata align=";
-					    $v.=$1 eq "p"? 4 : 8;
-					} elsif ($line=~/\.CRT\$/i) {
-					    $v.=" rdata align=8";
-					}
-				    } else {
-					$v="$current_segment\tENDS\n" if ($current_segment);
-					$v.="$line\tSEGMENT";
-					if ($line=~/\.([px])data/) {
-					    $v.=" READONLY";
-					    $v.=" ALIGN(".($1 eq "p" ? 4 : 8).")" if ($masm>=$masmref);
-					} elsif ($line=~/\.CRT\$/i) {
-					    $v.=" READONLY ";
-					    $v.=$masm>=$masmref ? "ALIGN(8)" : "DWORD";
-					}
-				    }
-				    $current_segment = $line;
-				    $self->{value} = $v;
-				    last;
-				  };
-		/\.extern/  && do { $self->{value}  = "EXTERN\t".$line;
-				    $self->{value} .= ":NEAR" if ($masm);
-				    last;
-				  };
-		/\.globl|.global/
-			    && do { $self->{value}  = $masm?"PUBLIC":"global";
-				    $self->{value} .= "\t".$line;
-				    last;
-				  };
-		/\.size/    && do { if (defined($current_function)) {
-					undef $self->{value};
-					if ($current_function->{abi} eq "svr4") {
-					    $self->{value}="${decor}SEH_end_$current_function->{name}:";
-					    $self->{value}.=":\n" if($masm);
-					}
-					$self->{value}.="$current_function->{name}\tENDP" if($masm && $current_function->{name});
-					undef $current_function;
-				    }
-				    last;
-				  };
-		/\.align/   && do { $self->{value} = "ALIGN\t".$line; last; };
-		/\.(value|long|rva|quad)/
-			    && do { my $sz  = substr($1,0,1);
-				    my @arr = split(/,\s*/,$line);
-				    my $last = pop(@arr);
-				    my $conv = sub  {	my $var=shift;
-							$var=~s/^(0b[0-1]+)/oct($1)/eig;
-							$var=~s/^0x([0-9a-f]+)/0$1h/ig if ($masm);
-							if ($sz eq "D" && ($current_segment=~/.[px]data/ || $dir eq ".rva"))
-							{ $var=~s/([_a-z\$\@][_a-z0-9\$\@]*)/$nasm?"$1 wrt ..imagebase":"imagerel $1"/egi; }
-							$var;
-						    };  
-
-				    $sz =~ tr/bvlrq/BWDDQ/;
-				    $self->{value} = "\tD$sz\t";
-				    for (@arr) { $self->{value} .= &$conv($_).","; }
-				    $self->{value} .= &$conv($last);
-				    last;
-				  };
-		/\.byte/    && do { my @str=split(/,\s*/,$line);
-				    map(s/(0b[0-1]+)/oct($1)/eig,@str);
-				    map(s/0x([0-9a-f]+)/0$1h/ig,@str) if ($masm);	
-				    while ($#str>15) {
-					$self->{value}.="DB\t"
-						.join(",",@str[0..15])."\n";
-					foreach (0..15) { shift @str; }
-				    }
-				    $self->{value}.="DB\t"
-						.join(",",@str) if (@str);
-				    last;
-				  };
-		/\.comm/    && do { my @str=split(/,\s*/,$line);
-				    my $v=undef;
-				    if ($nasm) {
-					$v.="common	$prefix@str[0] @str[1]";
-				    } else {
-					$v="$current_segment\tENDS\n" if ($current_segment);
-					$current_segment = "_DATA";
-					$v.="$current_segment\tSEGMENT\n";
-					$v.="COMM	@str[0]:DWORD:".@str[1]/4;
-				    }
-				    $self->{value} = $v;
-				    last;
-				  };
-	    }
-	    $line = "";
-	}
-
-	$ret;
-    }
-    sub out {
-	my $self = shift;
-	$self->{value};
-    }
-}
-
-sub rex {
- local *opcode=shift;
- my ($dst,$src,$rex)=@_;
-
-   $rex|=0x04 if($dst>=8);
-   $rex|=0x01 if($src>=8);
-   push @opcode,($rex|0x40) if ($rex);
-}
-
-# older gas and ml64 don't handle SSE>2 instructions
-my %regrm = (	"%eax"=>0, "%ecx"=>1, "%edx"=>2, "%ebx"=>3,
-		"%esp"=>4, "%ebp"=>5, "%esi"=>6, "%edi"=>7	);
-
-my $movq = sub {	# elderly gas can't handle inter-register movq
-  my $arg = shift;
-  my @opcode=(0x66);
-    if ($arg =~ /%xmm([0-9]+),\s*%r(\w+)/) {
-	my ($src,$dst)=($1,$2);
-	if ($dst !~ /[0-9]+/)	{ $dst = $regrm{"%e$dst"}; }
-	rex(\@opcode,$src,$dst,0x8);
-	push @opcode,0x0f,0x7e;
-	push @opcode,0xc0|(($src&7)<<3)|($dst&7);	# ModR/M
-	@opcode;
-    } elsif ($arg =~ /%r(\w+),\s*%xmm([0-9]+)/) {
-	my ($src,$dst)=($2,$1);
-	if ($dst !~ /[0-9]+/)	{ $dst = $regrm{"%e$dst"}; }
-	rex(\@opcode,$src,$dst,0x8);
-	push @opcode,0x0f,0x6e;
-	push @opcode,0xc0|(($src&7)<<3)|($dst&7);	# ModR/M
-	@opcode;
-    } else {
-	();
-    }
-};
-
-my $pextrd = sub {
-    if (shift =~ /\$([0-9]+),\s*%xmm([0-9]+),\s*(%\w+)/) {
-      my @opcode=(0x66);
-	$imm=$1;
-	$src=$2;
-	$dst=$3;
-	if ($dst =~ /%r([0-9]+)d/)	{ $dst = $1; }
-	elsif ($dst =~ /%e/)		{ $dst = $regrm{$dst}; }
-	rex(\@opcode,$src,$dst);
-	push @opcode,0x0f,0x3a,0x16;
-	push @opcode,0xc0|(($src&7)<<3)|($dst&7);	# ModR/M
-	push @opcode,$imm;
-	@opcode;
-    } else {
-	();
-    }
-};
-
-my $pinsrd = sub {
-    if (shift =~ /\$([0-9]+),\s*(%\w+),\s*%xmm([0-9]+)/) {
-      my @opcode=(0x66);
-	$imm=$1;
-	$src=$2;
-	$dst=$3;
-	if ($src =~ /%r([0-9]+)/)	{ $src = $1; }
-	elsif ($src =~ /%e/)		{ $src = $regrm{$src}; }
-	rex(\@opcode,$dst,$src);
-	push @opcode,0x0f,0x3a,0x22;
-	push @opcode,0xc0|(($dst&7)<<3)|($src&7);	# ModR/M
-	push @opcode,$imm;
-	@opcode;
-    } else {
-	();
-    }
-};
-
-my $pshufb = sub {
-    if (shift =~ /%xmm([0-9]+),\s*%xmm([0-9]+)/) {
-      my @opcode=(0x66);
-	rex(\@opcode,$2,$1);
-	push @opcode,0x0f,0x38,0x00;
-	push @opcode,0xc0|($1&7)|(($2&7)<<3);		# ModR/M
-	@opcode;
-    } else {
-	();
-    }
-};
-
-my $palignr = sub {
-    if (shift =~ /\$([0-9]+),\s*%xmm([0-9]+),\s*%xmm([0-9]+)/) {
-      my @opcode=(0x66);
-	rex(\@opcode,$3,$2);
-	push @opcode,0x0f,0x3a,0x0f;
-	push @opcode,0xc0|($2&7)|(($3&7)<<3);		# ModR/M
-	push @opcode,$1;
-	@opcode;
-    } else {
-	();
-    }
-};
-
-my $pclmulqdq = sub {
-    if (shift =~ /\$([x0-9a-f]+),\s*%xmm([0-9]+),\s*%xmm([0-9]+)/) {
-      my @opcode=(0x66);
-	rex(\@opcode,$3,$2);
-	push @opcode,0x0f,0x3a,0x44;
-	push @opcode,0xc0|($2&7)|(($3&7)<<3);		# ModR/M
-	my $c=$1;
-	push @opcode,$c=~/^0/?oct($c):$c;
-	@opcode;
-    } else {
-	();
-    }
-};
-
-my $rdrand = sub {
-    if (shift =~ /%[er](\w+)/) {
-      my @opcode=();
-      my $dst=$1;
-	if ($dst !~ /[0-9]+/) { $dst = $regrm{"%e$dst"}; }
-	rex(\@opcode,0,$1,8);
-	push @opcode,0x0f,0xc7,0xf0|($dst&7);
-	@opcode;
-    } else {
-	();
-    }
-};
-
-if ($nasm) {
-    print <<___;
-default	rel
-%define XMMWORD
-___
-} elsif ($masm) {
-    print <<___;
-OPTION	DOTNAME
-___
-}
-while($line=<>) {
-
-    chomp($line);
-
-    $line =~ s|[#!].*$||;	# get rid of asm-style comments...
-    $line =~ s|/\*.*\*/||;	# ... and C-style comments...
-    $line =~ s|^\s+||;		# ... and skip white spaces in beginning
-
-    undef $label;
-    undef $opcode;
-    undef @args;
-
-    if ($label=label->re(\$line))	{ print $label->out(); }
-
-    if (directive->re(\$line)) {
-	printf "%s",directive->out();
-    } elsif ($opcode=opcode->re(\$line)) {
-	my $asm = eval("\$".$opcode->mnemonic());
-	undef @bytes;
-	
-	if ((ref($asm) eq 'CODE') && scalar(@bytes=&$asm($line))) {
-	    print $gas?".byte\t":"DB\t",join(',',@bytes),"\n";
-	    next;
-	}
-
-	ARGUMENT: while (1) {
-	my $arg;
-
-	if ($arg=register->re(\$line))	{ opcode->size($arg->size()); }
-	elsif ($arg=const->re(\$line))	{ }
-	elsif ($arg=ea->re(\$line))	{ }
-	elsif ($arg=expr->re(\$line))	{ }
-	else				{ last ARGUMENT; }
-
-	push @args,$arg;
-
-	last ARGUMENT if ($line !~ /^,/);
-
-	$line =~ s/^,\s*//;
-	} # ARGUMENT:
-
-	if ($#args>=0) {
-	    my $insn;
-	    my $sz=opcode->size();
-
-	    if ($gas) {
-		$insn = $opcode->out($#args>=1?$args[$#args]->size():$sz);
-		@args = map($_->out($sz),@args);
-		printf "\t%s\t%s",$insn,join(",",@args);
-	    } else {
-		$insn = $opcode->out();
-		foreach (@args) {
-		    my $arg = $_->out();
-		    # $insn.=$sz compensates for movq, pinsrw, ...
-		    if ($arg =~ /^xmm[0-9]+$/) { $insn.=$sz; $sz="x" if(!$sz); last; }
-		    if ($arg =~ /^mm[0-9]+$/)  { $insn.=$sz; $sz="q" if(!$sz); last; }
-		}
-		@args = reverse(@args);
-		undef $sz if ($nasm && $opcode->mnemonic() eq "lea");
-		printf "\t%s\t%s",$insn,join(",",map($_->out($sz),@args));
-	    }
-	} else {
-	    printf "\t%s",$opcode->out();
-	}
-    }
-
-    print $line,"\n";
-}
-
-print "\n$current_segment\tENDS\n"	if ($current_segment && $masm);
-print "END\n"				if ($masm);
-
-close STDOUT;
-
-#################################################
-# Cross-reference x86_64 ABI "card"
-#
-# 		Unix		Win64
-# %rax		*		*
-# %rbx		-		-
-# %rcx		#4		#1
-# %rdx		#3		#2
-# %rsi		#2		-
-# %rdi		#1		-
-# %rbp		-		-
-# %rsp		-		-
-# %r8		#5		#3
-# %r9		#6		#4
-# %r10		*		*
-# %r11		*		*
-# %r12		-		-
-# %r13		-		-
-# %r14		-		-
-# %r15		-		-
-# 
-# (*)	volatile register
-# (-)	preserved by callee
-# (#)	Nth argument, volatile
-#
-# In Unix terms top of stack is argument transfer area for arguments
-# which could not be accomodated in registers. Or in other words 7th
-# [integer] argument resides at 8(%rsp) upon function entry point.
-# 128 bytes above %rsp constitute a "red zone" which is not touched
-# by signal handlers and can be used as temporal storage without
-# allocating a frame.
-#
-# In Win64 terms N*8 bytes on top of stack is argument transfer area,
-# which belongs to/can be overwritten by callee. N is the number of
-# arguments passed to callee, *but* not less than 4! This means that
-# upon function entry point 5th argument resides at 40(%rsp), as well
-# as that 32 bytes from 8(%rsp) can always be used as temporal
-# storage [without allocating a frame]. One can actually argue that
-# one can assume a "red zone" above stack pointer under Win64 as well.
-# Point is that at apparently no occasion Windows kernel would alter
-# the area above user stack pointer in true asynchronous manner...
-#
-# All the above means that if assembler programmer adheres to Unix
-# register and stack layout, but disregards the "red zone" existense,
-# it's possible to use following prologue and epilogue to "gear" from
-# Unix to Win64 ABI in leaf functions with not more than 6 arguments.
-#
-# omnipotent_function:
-# ifdef WIN64
-#	movq	%rdi,8(%rsp)
-#	movq	%rsi,16(%rsp)
-#	movq	%rcx,%rdi	; if 1st argument is actually present
-#	movq	%rdx,%rsi	; if 2nd argument is actually ...
-#	movq	%r8,%rdx	; if 3rd argument is ...
-#	movq	%r9,%rcx	; if 4th argument ...
-#	movq	40(%rsp),%r8	; if 5th ...
-#	movq	48(%rsp),%r9	; if 6th ...
-# endif
-#	...
-# ifdef WIN64
-#	movq	8(%rsp),%rdi
-#	movq	16(%rsp),%rsi
-# endif
-#	ret
-#
-#################################################
-# Win64 SEH, Structured Exception Handling.
-#
-# Unlike on Unix systems(*) lack of Win64 stack unwinding information
-# has undesired side-effect at run-time: if an exception is raised in
-# assembler subroutine such as those in question (basically we're
-# referring to segmentation violations caused by malformed input
-# parameters), the application is briskly terminated without invoking
-# any exception handlers, most notably without generating memory dump
-# or any user notification whatsoever. This poses a problem. It's
-# possible to address it by registering custom language-specific
-# handler that would restore processor context to the state at
-# subroutine entry point and return "exception is not handled, keep
-# unwinding" code. Writing such handler can be a challenge... But it's
-# doable, though requires certain coding convention. Consider following
-# snippet:
-#
-# .type	function,@function
-# function:
-#	movq	%rsp,%rax	# copy rsp to volatile register
-#	pushq	%r15		# save non-volatile registers
-#	pushq	%rbx
-#	pushq	%rbp
-#	movq	%rsp,%r11
-#	subq	%rdi,%r11	# prepare [variable] stack frame
-#	andq	$-64,%r11
-#	movq	%rax,0(%r11)	# check for exceptions
-#	movq	%r11,%rsp	# allocate [variable] stack frame
-#	movq	%rax,0(%rsp)	# save original rsp value
-# magic_point:
-#	...
-#	movq	0(%rsp),%rcx	# pull original rsp value
-#	movq	-24(%rcx),%rbp	# restore non-volatile registers
-#	movq	-16(%rcx),%rbx
-#	movq	-8(%rcx),%r15
-#	movq	%rcx,%rsp	# restore original rsp
-#	ret
-# .size function,.-function
-#
-# The key is that up to magic_point copy of original rsp value remains
-# in chosen volatile register and no non-volatile register, except for
-# rsp, is modified. While past magic_point rsp remains constant till
-# the very end of the function. In this case custom language-specific
-# exception handler would look like this:
-#
-# EXCEPTION_DISPOSITION handler (EXCEPTION_RECORD *rec,ULONG64 frame,
-#		CONTEXT *context,DISPATCHER_CONTEXT *disp)
-# {	ULONG64 *rsp = (ULONG64 *)context->Rax;
-#	if (context->Rip >= magic_point)
-#	{   rsp = ((ULONG64 **)context->Rsp)[0];
-#	    context->Rbp = rsp[-3];
-#	    context->Rbx = rsp[-2];
-#	    context->R15 = rsp[-1];
-#	}
-#	context->Rsp = (ULONG64)rsp;
-#	context->Rdi = rsp[1];
-#	context->Rsi = rsp[2];
-#
-#	memcpy (disp->ContextRecord,context,sizeof(CONTEXT));
-#	RtlVirtualUnwind(UNW_FLAG_NHANDLER,disp->ImageBase,
-#		dips->ControlPc,disp->FunctionEntry,disp->ContextRecord,
-#		&disp->HandlerData,&disp->EstablisherFrame,NULL);
-#	return ExceptionContinueSearch;
-# }
-#
-# It's appropriate to implement this handler in assembler, directly in
-# function's module. In order to do that one has to know members'
-# offsets in CONTEXT and DISPATCHER_CONTEXT structures and some constant
-# values. Here they are:
-#
-#	CONTEXT.Rax				120
-#	CONTEXT.Rcx				128
-#	CONTEXT.Rdx				136
-#	CONTEXT.Rbx				144
-#	CONTEXT.Rsp				152
-#	CONTEXT.Rbp				160
-#	CONTEXT.Rsi				168
-#	CONTEXT.Rdi				176
-#	CONTEXT.R8				184
-#	CONTEXT.R9				192
-#	CONTEXT.R10				200
-#	CONTEXT.R11				208
-#	CONTEXT.R12				216
-#	CONTEXT.R13				224
-#	CONTEXT.R14				232
-#	CONTEXT.R15				240
-#	CONTEXT.Rip				248
-#	CONTEXT.Xmm6				512
-#	sizeof(CONTEXT)				1232
-#	DISPATCHER_CONTEXT.ControlPc		0
-#	DISPATCHER_CONTEXT.ImageBase		8
-#	DISPATCHER_CONTEXT.FunctionEntry	16
-#	DISPATCHER_CONTEXT.EstablisherFrame	24
-#	DISPATCHER_CONTEXT.TargetIp		32
-#	DISPATCHER_CONTEXT.ContextRecord	40
-#	DISPATCHER_CONTEXT.LanguageHandler	48
-#	DISPATCHER_CONTEXT.HandlerData		56
-#	UNW_FLAG_NHANDLER			0
-#	ExceptionContinueSearch			1
-#
-# In order to tie the handler to the function one has to compose
-# couple of structures: one for .xdata segment and one for .pdata.
-#
-# UNWIND_INFO structure for .xdata segment would be
-#
-# function_unwind_info:
-#	.byte	9,0,0,0
-#	.rva	handler
-#
-# This structure designates exception handler for a function with
-# zero-length prologue, no stack frame or frame register.
-#
-# To facilitate composing of .pdata structures, auto-generated "gear"
-# prologue copies rsp value to rax and denotes next instruction with
-# .LSEH_begin_{function_name} label. This essentially defines the SEH
-# styling rule mentioned in the beginning. Position of this label is
-# chosen in such manner that possible exceptions raised in the "gear"
-# prologue would be accounted to caller and unwound from latter's frame.
-# End of function is marked with respective .LSEH_end_{function_name}
-# label. To summarize, .pdata segment would contain
-#
-#	.rva	.LSEH_begin_function
-#	.rva	.LSEH_end_function
-#	.rva	function_unwind_info
-#
-# Reference to functon_unwind_info from .xdata segment is the anchor.
-# In case you wonder why references are 32-bit .rvas and not 64-bit
-# .quads. References put into these two segments are required to be
-# *relative* to the base address of the current binary module, a.k.a.
-# image base. No Win64 module, be it .exe or .dll, can be larger than
-# 2GB and thus such relative references can be and are accommodated in
-# 32 bits.
-#
-# Having reviewed the example function code, one can argue that "movq
-# %rsp,%rax" above is redundant. It is not! Keep in mind that on Unix
-# rax would contain an undefined value. If this "offends" you, use
-# another register and refrain from modifying rax till magic_point is
-# reached, i.e. as if it was a non-volatile register. If more registers
-# are required prior [variable] frame setup is completed, note that
-# nobody says that you can have only one "magic point." You can
-# "liberate" non-volatile registers by denoting last stack off-load
-# instruction and reflecting it in finer grade unwind logic in handler.
-# After all, isn't it why it's called *language-specific* handler...
-#
-# Attentive reader can notice that exceptions would be mishandled in
-# auto-generated "gear" epilogue. Well, exception effectively can't
-# occur there, because if memory area used by it was subject to
-# segmentation violation, then it would be raised upon call to the
-# function (and as already mentioned be accounted to caller, which is
-# not a problem). If you're still not comfortable, then define tail
-# "magic point" just prior ret instruction and have handler treat it...
-#
-# (*)	Note that we're talking about run-time, not debug-time. Lack of
-#	unwind information makes debugging hard on both Windows and
-#	Unix. "Unlike" referes to the fact that on Unix signal handler
-#	will always be invoked, core dumped and appropriate exit code
-#	returned to parent (for user notification).