Make x86_64-xlate.pl 'use strict' clean.

use strict would have caught a number of historical bugs in the perlasm
code, some in the repository and some found during review. It even found
a fresh masm-only bug (see below).

This required some tweaks. The "single instance is enough" globals got
switched to proper blessed objects rather than relying on symbolic refs.
A few types need $opcode passed in as a result.

The $$line thing is a little bit of a nuisance. There may be a clearer
pattern to use instead.

This even a bug in the masm code.
9b634c9b added logic to make labels
global or function-global based on whether something starts with a $,
seemingly intended to capture the $decor setting of '$L$'. However, it
references $ret which is not defined in label::out. label::out is always
called after label::re, so $ret was always the label itself, so the line
always ran.

I've removed the regular expression so as not to change the behavior of
the script. A number of the assembly files now routinely jump across
functions, so this seems to be the desired behavior now.

GH#1165
Signed-off-by: NAndy Polyakov <appro@openssl.org>
Reviewed-by: NRich Salz <rsalz@openssl.org>

crypto/perlasm/x86_64-xlate.pl

@@ -65,6 +65,9 @@
 # a. If function accepts more than 4 arguments *and* >4th argument
 #    is declared as non 64-bit value, do clear its upper part.
 
+
+use strict;
+
 my $flavour = shift;
 my $output  = shift;
 if ($flavour =~ /\./) { $output = $flavour; undef $flavour; }
@@ -109,14 +112,15 @@ my %globals;
 
 { package opcode;	# pick up opcodes
     sub re {
-	my	$self = shift;	# single instance in enough...
-	local	*line = shift;
-	undef	$ret;
+	my	($class, $line) = @_;
+	my	$self = {};
+	my	$ret;
 
-	if ($line =~ /^([a-z][a-z0-9]*)/i) {
+	if ($$line =~ /^([a-z][a-z0-9]*)/i) {
+	    bless $self,$class;
 	    $self->{op} = $1;
 	    $ret = $self;
-	    $line = substr($line,@+[0]); $line =~ s/^\s+//;
+	    $$line = substr($$line,@+[0]); $$line =~ s/^\s+//;
 
 	    undef $self->{sz};
 	    if ($self->{op} =~ /^(movz)x?([bw]).*/) {	# movz is pain...
@@ -128,7 +132,7 @@ my %globals;
 		$self->{sz} = "";
 	    } elsif ($self->{op} =~ /^v/) { # VEX
 		$self->{sz} = "";
-	    } elsif ($self->{op} =~ /mov[dq]/ && $line =~ /%xmm/) {
+	    } elsif ($self->{op} =~ /mov[dq]/ && $$line =~ /%xmm/) {
 		$self->{sz} = "";
 	    } elsif ($self->{op} =~ /([a-z]{3,})([qlwb])$/) {
 		$self->{op} = $1;
@@ -138,8 +142,7 @@ my %globals;
 	$ret;
     }
     sub size {
-	my $self = shift;
-	my $sz   = shift;
+	my ($self, $sz) = @_;
 	$self->{sz} = $sz if (defined($sz) && !defined($self->{sz}));
 	$self->{sz};
     }
@@ -180,22 +183,22 @@ my %globals;
 	}
     }
     sub mnemonic {
-	my $self=shift;
-	my $op=shift;
+	my ($self, $op) = @_;
 	$self->{op}=$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	$ret;
+	my	($class, $line) = @_;
+	my	$self = {};
+	my	$ret;
 
-	if ($line =~ /^\$([^,]+)/) {
+	if ($$line =~ /^\$([^,]+)/) {
+	    bless $self, $class;
 	    $self->{value} = $1;
 	    $ret = $self;
-	    $line = substr($line,@+[0]); $line =~ s/^\s+//;
+	    $$line = substr($$line,@+[0]); $$line =~ s/^\s+//;
 	}
 	$ret;
     }
@@ -220,32 +223,33 @@ my %globals;
 }
 { package ea;		# pick up effective addresses: expr(%reg,%reg,scale)
     sub re {
-	my	$self = shift;	# single instance in enough...
-	local	*line = shift;
-	undef	$ret;
+	my	($class, $line, $opcode) = @_;
+	my	$self = {};
+	my	$ret;
 
 	# optional * ---vvv--- appears in indirect jmp/call
-	if ($line =~ /^(\*?)([^\(,]*)\(([%\w,]+)\)/) {
+	if ($$line =~ /^(\*?)([^\(,]*)\(([%\w,]+)\)/) {
+	    bless $self, $class;
 	    $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+//;
+	    $$line = substr($$line,@+[0]); $$line =~ s/^\s+//;
 
 	    if ($win64 && $self->{label} =~ s/\@GOTPCREL//) {
-		die if (opcode->mnemonic() ne "mov");
-		opcode->mnemonic("lea");
+		die if ($opcode->mnemonic() ne "mov");
+		$opcode->mnemonic("lea");
 	    }
 	    $self->{base}  =~ s/^%//;
 	    $self->{index} =~ s/^%// if (defined($self->{index}));
+	    $self->{opcode} = $opcode;
 	}
 	$ret;
     }
     sub size {}
     sub out {
-    	my $self = shift;
-	my $sz = shift;
+	my ($self, $sz) = @_;
 
 	$self->{label} =~ s/([_a-z][_a-z0-9]*)/$globals{$1} or $1/gei;
 	$self->{label} =~ s/\.L/$decor/g;
@@ -280,7 +284,7 @@ my %globals;
 		sprintf "%s%s(%%%s)",	$self->{asterisk},$self->{label},$self->{base};
 	    }
 	} else {
-	    %szmap = (	b=>"BYTE$PTR",  w=>"WORD$PTR",
+	    my %szmap = (	b=>"BYTE$PTR",  w=>"WORD$PTR",
 			l=>"DWORD$PTR", d=>"DWORD$PTR",
 	    		q=>"QWORD$PTR", o=>"OWORD$PTR",
 			x=>"XMMWORD$PTR", y=>"YMMWORD$PTR", z=>"ZMMWORD$PTR" );
@@ -289,11 +293,12 @@ my %globals;
 	    $self->{label} =~ s/(?<![\w\$\.])0x([0-9a-f]+)/0$1h/ig;
 	    $self->{label} = "($self->{label})" if ($self->{label} =~ /[\*\+\-\/]/);
 
-	    ($self->{asterisk})					&& ($sz="q") ||
-	    (opcode->mnemonic() =~ /^v?mov([qd])$/)		&& ($sz=$1)  ||
-	    (opcode->mnemonic() =~ /^v?pinsr([qdwb])$/)		&& ($sz=$1)  ||
-	    (opcode->mnemonic() =~ /^vpbroadcast([qdwb])$/)	&& ($sz=$1)  ||
-	    (opcode->mnemonic() =~ /^v(?!perm)[a-z]+[fi]128$/)	&& ($sz="x");
+	    my $mnemonic = $self->{opcode}->mnemonic();
+	    ($self->{asterisk})				&& ($sz="q") ||
+	    ($mnemonic =~ /^v?mov([qd])$/)		&& ($sz=$1)  ||
+	    ($mnemonic =~ /^v?pinsr([qdwb])$/)		&& ($sz=$1)  ||
+	    ($mnemonic =~ /^vpbroadcast([qdwb])$/)	&& ($sz=$1)  ||
+	    ($mnemonic =~ /^v(?!perm)[a-z]+[fi]128$/)	&& ($sz="x");
 
 	    if (defined($self->{index})) {
 		sprintf "%s[%s%s*%d%s]",$szmap{$sz},
@@ -312,24 +317,23 @@ my %globals;
 }
 { package register;	# pick up registers, which start with %.
     sub re {
-	my	$class = shift;	# multiple instances...
+	my	($class, $line) = @_;
 	my	$self = {};
-	local	*line = shift;
-	undef	$ret;
+	my	$ret;
 
 	# optional * ---vvv--- appears in indirect jmp/call
-	if ($line =~ /^(\*?)%(\w+)/) {
+	if ($$line =~ /^(\*?)%(\w+)/) {
 	    bless $self,$class;
 	    $self->{asterisk} = $1;
 	    $self->{value} = $2;
 	    $ret = $self;
-	    $line = substr($line,@+[0]); $line =~ s/^\s+//;
+	    $$line = substr($$line,@+[0]); $$line =~ s/^\s+//;
 	}
 	$ret;
     }
     sub size {
 	my	$self = shift;
-	undef	$ret;
+	my	$ret;
 
 	if    ($self->{value} =~ /^r[\d]+b$/i)	{ $ret="b"; }
 	elsif ($self->{value} =~ /^r[\d]+w$/i)	{ $ret="w"; }
@@ -350,14 +354,15 @@ my %globals;
 }
 { package label;	# pick up labels, which end with :
     sub re {
-	my	$self = shift;	# single instance is enough...
-	local	*line = shift;
-	undef	$ret;
+	my	($class, $line) = @_;
+	my	$self = {};
+	my	$ret;
 
-	if ($line =~ /(^[\.\w]+)\:/) {
+	if ($$line =~ /(^[\.\w]+)\:/) {
+	    bless $self,$class;
 	    $self->{value} = $1;
 	    $ret = $self;
-	    $line = substr($line,@+[0]); $line =~ s/^\s+//;
+	    $$line = substr($$line,@+[0]); $$line =~ s/^\s+//;
 
 	    $self->{value} =~ s/^\.L/$decor/;
 	}
@@ -387,7 +392,8 @@ my %globals;
 	    }
 	    $func;
 	} elsif ($self->{value} ne "$current_function->{name}") {
-	    $self->{value} .= ":" if ($masm && $ret!~m/^\$/);
+	    # Make all labels in masm global.
+	    $self->{value} .= ":" if ($masm);
 	    $self->{value} . ":";
 	} elsif ($win64 && $current_function->{abi} eq "svr4") {
 	    my $func =	"$current_function->{name}" .
@@ -416,24 +422,26 @@ my %globals;
 }
 { package expr;		# pick up expressioins
     sub re {
-	my	$self = shift;	# single instance is enough...
-	local	*line = shift;
-	undef	$ret;
+	my	($class, $line, $opcode) = @_;
+	my	$self = {};
+	my	$ret;
 
-	if ($line =~ /(^[^,]+)/) {
+	if ($$line =~ /(^[^,]+)/) {
+	    bless $self,$class;
 	    $self->{value} = $1;
 	    $ret = $self;
-	    $line = substr($line,@+[0]); $line =~ s/^\s+//;
+	    $$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;
+	    $self->{opcode} = $opcode;
 	}
 	$ret;
     }
     sub out {
 	my $self = shift;
-	if ($nasm && opcode->mnemonic()=~m/^j(?![re]cxz)/) {
+	if ($nasm && $self->{opcode}->mnemonic()=~m/^j(?![re]cxz)/) {
 	    "NEAR ".$self->{value};
 	} else {
 	    $self->{value};
@@ -442,9 +450,9 @@ my %globals;
 }
 { package directive;	# pick up directives, which start with .
     sub re {
-	my	$self = shift;	# single instance is enough...
-	local	*line = shift;
-	undef	$ret;
+	my	($class, $line) = @_;
+	my	$self = {};
+	my	$ret;
 	my	$dir;
 	my	%opcode =	# lea 2f-1f(%rip),%dst; 1: nop; 2:
 		(	"%rax"=>0x01058d48,	"%rcx"=>0x010d8d48,
@@ -456,25 +464,26 @@ my %globals;
 			"%r12"=>0x01258d4c,	"%r13"=>0x012d8d4c,
 			"%r14"=>0x01358d4c,	"%r15"=>0x013d8d4c	);
 
-	if ($line =~ /^\s*(\.\w+)/) {
+	if ($$line =~ /^\s*(\.\w+)/) {
+	    bless $self,$class;
 	    $dir = $1;
 	    $ret = $self;
 	    undef $self->{value};
-	    $line = substr($line,@+[0]); $line =~ s/^\s+//;
+	    $$line = substr($$line,@+[0]); $$line =~ s/^\s+//;
 
 	    SWITCH: for ($dir) {
-		/\.picmeup/ && do { if ($line =~ /(%r[\w]+)/i) {
+		/\.picmeup/ && do { if ($$line =~ /(%r[\w]+)/i) {
 			    		$dir="\t.long";
-					$line=sprintf "0x%x,0x90000000",$opcode{$1};
+					$$line=sprintf "0x%x,0x90000000",$opcode{$1};
 				    }
 				    last;
 				  };
 		/\.global|\.globl|\.extern/
-			    && do { $globals{$line} = $prefix . $line;
-				    $line = $globals{$line} if ($prefix);
+			    && do { $globals{$$line} = $prefix . $$line;
+				    $$line = $globals{$$line} if ($prefix);
 				    last;
 				  };
-		/\.type/    && do { ($sym,$type,$narg) = split(',',$line);
+		/\.type/    && do { my ($sym,$type,$narg) = split(',',$$line);
 				    if ($type eq "\@function") {
 					undef $current_function;
 					$current_function->{name} = $sym;
@@ -486,25 +495,25 @@ my %globals;
 					$current_function->{name} = $sym;
 					$current_function->{scope} = defined($globals{$sym})?"PUBLIC":"PRIVATE";
 				    }
-				    $line =~ s/\@abi\-omnipotent/\@function/;
-				    $line =~ s/\@function.*/\@function/;
+				    $$line =~ s/\@abi\-omnipotent/\@function/;
+				    $$line =~ s/\@function.*/\@function/;
 				    last;
 				  };
-		/\.asciz/   && do { if ($line =~ /^"(.*)"$/) {
+		/\.asciz/   && do { if ($$line =~ /^"(.*)"$/) {
 					$dir  = ".byte";
-					$line = join(",",unpack("C*",$1),0);
+					$$line = join(",",unpack("C*",$1),0);
 				    }
 				    last;
 				  };
 		/\.rva|\.long|\.quad/
-			    && do { $line =~ s/([_a-z][_a-z0-9]*)/$globals{$1} or $1/gei;
-				    $line =~ s/\.L/$decor/g;
+			    && do { $$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;
+		$self->{value} = $dir . "\t" . $$line;
 
 		if ($dir =~ /\.extern/) {
 		    $self->{value} = ""; # swallow extern
@@ -513,7 +522,7 @@ my %globals;
 		    $self->{value} = ".def\t" . ($globals{$1} or $1) . ";\t" .
 				(defined($globals{$1})?".scl 2;":".scl 3;") .
 				"\t.type 32;\t.endef"
-				if ($win64 && $line =~ /([^,]+),\@function/);
+				if ($win64 && $$line =~ /([^,]+),\@function/);
 		} elsif (!$elf && $dir =~ /\.size/) {
 		    $self->{value} = "";
 		    if (defined($current_function)) {
@@ -522,9 +531,9 @@ my %globals;
 			undef $current_function;
 		    }
 		} elsif (!$elf && $dir =~ /\.align/) {
-		    $self->{value} = ".p2align\t" . (log($line)/log(2));
+		    $self->{value} = ".p2align\t" . (log($$line)/log(2));
 		} elsif ($dir eq ".section") {
-		    $current_segment=$line;
+		    $current_segment=$$line;
 		    if (!$elf && $current_segment eq ".init") {
 			if	($flavour eq "macosx")	{ $self->{value} = ".mod_init_func"; }
 			elsif	($flavour eq "mingw64")	{ $self->{value} = ".section\t.ctors"; }
@@ -532,13 +541,13 @@ my %globals;
 		} elsif ($dir =~ /\.(text|data)/) {
 		    $current_segment=".$1";
 		} elsif ($dir =~ /\.hidden/) {
-		    if    ($flavour eq "macosx")  { $self->{value} = ".private_extern\t$prefix$line"; }
+		    if    ($flavour eq "macosx")  { $self->{value} = ".private_extern\t$prefix$$line"; }
 		    elsif ($flavour eq "mingw64") { $self->{value} = ""; }
 		} elsif ($dir =~ /\.comm/) {
-		    $self->{value} = "$dir\t$prefix$line";
+		    $self->{value} = "$dir\t$prefix$$line";
 		    $self->{value} =~ s|,([0-9]+),([0-9]+)$|",$1,".log($2)/log(2)|e if ($flavour eq "macosx");
 		}
-		$line = "";
+		$$line = "";
 		return $self;
 	    }
 
@@ -569,38 +578,38 @@ my %globals;
 				    last;
 				  };
 		/\.section/ && do { my $v=undef;
-				    $line =~ s/([^,]*).*/$1/;
-				    $line = ".CRT\$XCU" if ($line eq ".init");
+				    $$line =~ s/([^,]*).*/$1/;
+				    $$line = ".CRT\$XCU" if ($$line eq ".init");
 				    if ($nasm) {
-					$v="section	$line";
-					if ($line=~/\.([px])data/) {
+					$v="section	$$line";
+					if ($$line=~/\.([px])data/) {
 					    $v.=" rdata align=";
 					    $v.=$1 eq "p"? 4 : 8;
-					} elsif ($line=~/\.CRT\$/i) {
+					} elsif ($$line=~/\.CRT\$/i) {
 					    $v.=" rdata align=8";
 					}
 				    } else {
 					$v="$current_segment\tENDS\n" if ($current_segment);
-					$v.="$line\tSEGMENT";
-					if ($line=~/\.([px])data/) {
+					$v.="$$line\tSEGMENT";
+					if ($$line=~/\.([px])data/) {
 					    $v.=" READONLY";
 					    $v.=" ALIGN(".($1 eq "p" ? 4 : 8).")" if ($masm>=$masmref);
-					} elsif ($line=~/\.CRT\$/i) {
+					} elsif ($$line=~/\.CRT\$/i) {
 					    $v.=" READONLY ";
 					    $v.=$masm>=$masmref ? "ALIGN(8)" : "DWORD";
 					}
 				    }
-				    $current_segment = $line;
+				    $current_segment = $$line;
 				    $self->{value} = $v;
 				    last;
 				  };
-		/\.extern/  && do { $self->{value}  = "EXTERN\t".$line;
+		/\.extern/  && do { $self->{value}  = "EXTERN\t".$$line;
 				    $self->{value} .= ":NEAR" if ($masm);
 				    last;
 				  };
 		/\.globl|.global/
 			    && do { $self->{value}  = $masm?"PUBLIC":"global";
-				    $self->{value} .= "\t".$line;
+				    $self->{value} .= "\t".$$line;
 				    last;
 				  };
 		/\.size/    && do { if (defined($current_function)) {
@@ -615,12 +624,12 @@ my %globals;
 				    last;
 				  };
 		/\.align/   && do { my $max = ($masm && $masm>=$masmref) ? 256 : 4096;
-				    $self->{value} = "ALIGN\t".($line>$max?$max:$line);
+				    $self->{value} = "ALIGN\t".($$line>$max?$max:$$line);
 				    last;
 				  };
 		/\.(value|long|rva|quad)/
 			    && do { my $sz  = substr($1,0,1);
-				    my @arr = split(/,\s*/,$line);
+				    my @arr = split(/,\s*/,$$line);
 				    my $last = pop(@arr);
 				    my $conv = sub  {	my $var=shift;
 							$var=~s/^(0b[0-1]+)/oct($1)/eig;
@@ -636,7 +645,7 @@ my %globals;
 				    $self->{value} .= &$conv($last);
 				    last;
 				  };
-		/\.byte/    && do { my @str=split(/,\s*/,$line);
+		/\.byte/    && do { my @str=split(/,\s*/,$$line);
 				    map(s/(0b[0-1]+)/oct($1)/eig,@str);
 				    map(s/0x([0-9a-f]+)/0$1h/ig,@str) if ($masm);	
 				    while ($#str>15) {
@@ -648,7 +657,7 @@ my %globals;
 						.join(",",@str) if (@str);
 				    last;
 				  };
-		/\.comm/    && do { my @str=split(/,\s*/,$line);
+		/\.comm/    && do { my @str=split(/,\s*/,$$line);
 				    my $v=undef;
 				    if ($nasm) {
 					$v.="common	$prefix@str[0] @str[1]";
@@ -662,7 +671,7 @@ my %globals;
 				    last;
 				  };
 	    }
-	    $line = "";
+	    $$line = "";
 	}
 
 	$ret;
@@ -674,12 +683,12 @@ my %globals;
 }
 
 sub rex {
- local *opcode=shift;
+ my $opcode=shift;
  my ($dst,$src,$rex)=@_;
 
    $rex|=0x04 if($dst>=8);
    $rex|=0x01 if($src>=8);
-   push @opcode,($rex|0x40) if ($rex);
+   push @$opcode,($rex|0x40) if ($rex);
 }
 
 # older gas and ml64 don't handle SSE>2 instructions
@@ -711,9 +720,9 @@ my $movq = sub {	# elderly gas can't handle inter-register movq
 my $pextrd = sub {
     if (shift =~ /\$([0-9]+),\s*%xmm([0-9]+),\s*(%\w+)/) {
       my @opcode=(0x66);
-	$imm=$1;
-	$src=$2;
-	$dst=$3;
+	my $imm=$1;
+	my $src=$2;
+	my $dst=$3;
 	if ($dst =~ /%r([0-9]+)d/)	{ $dst = $1; }
 	elsif ($dst =~ /%e/)		{ $dst = $regrm{$dst}; }
 	rex(\@opcode,$src,$dst);
@@ -729,9 +738,9 @@ my $pextrd = sub {
 my $pinsrd = sub {
     if (shift =~ /\$([0-9]+),\s*(%\w+),\s*%xmm([0-9]+)/) {
       my @opcode=(0x66);
-	$imm=$1;
-	$src=$2;
-	$dst=$3;
+	my $imm=$1;
+	my $src=$2;
+	my $dst=$3;
 	if ($src =~ /%r([0-9]+)/)	{ $src = $1; }
 	elsif ($src =~ /%e/)		{ $src = $regrm{$src}; }
 	rex(\@opcode,$dst,$src);
@@ -810,14 +819,14 @@ my $rdseed = sub {
 };
 
 sub rxb {
- local *opcode=shift;
+ my $opcode=shift;
  my ($dst,$src1,$src2,$rxb)=@_;
 
    $rxb|=0x7<<5;
    $rxb&=~(0x04<<5) if($dst>=8);
    $rxb&=~(0x01<<5) if($src1>=8);
    $rxb&=~(0x02<<5) if($src2>=8);
-   push @opcode,$rxb;
+   push @$opcode,$rxb;
 }
 
 my $vprotd = sub {
@@ -860,7 +869,7 @@ ___
 OPTION	DOTNAME
 ___
 }
-while(defined($line=<>)) {
+while(defined(my $line=<>)) {
 
     $line =~ s|\R$||;           # Better chomp
 
@@ -869,31 +878,27 @@ while(defined($line=<>)) {
     $line =~ s|^\s+||;		# ... and skip white spaces in beginning
     $line =~ s|\s+$||;		# ... and at the end
 
-    undef $label;
-    undef $opcode;
-    undef @args;
-
-    if ($label=label->re(\$line))	{ print $label->out(); }
+    if (my $label=label->re(\$line))	{ print $label->out(); }
 
-    if (directive->re(\$line)) {
-	printf "%s",directive->out();
-    } elsif ($opcode=opcode->re(\$line)) {
+    if (my $directive=directive->re(\$line)) {
+	printf "%s",$directive->out();
+    } elsif (my $opcode=opcode->re(\$line)) {
 	my $asm = eval("\$".$opcode->mnemonic());
-	undef @bytes;
 	
-	if ((ref($asm) eq 'CODE') && scalar(@bytes=&$asm($line))) {
+	if ((ref($asm) eq 'CODE') && scalar(my @bytes=&$asm($line))) {
 	    print $gas?".byte\t":"DB\t",join(',',@bytes),"\n";
 	    next;
 	}
 
+	my @args;
 	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 ($arg=expr->re(\$line))	{ }
-	else				{ last ARGUMENT; }
+	if ($arg=register->re(\$line))		{ $opcode->size($arg->size()); }
+	elsif ($arg=const->re(\$line))		{ }
+	elsif ($arg=ea->re(\$line, $opcode))	{ }
+	elsif ($arg=expr->re(\$line, $opcode))	{ }
+	else					{ last ARGUMENT; }
 
 	push @args,$arg;
 
@@ -904,7 +909,7 @@ while(defined($line=<>)) {
 
 	if ($#args>=0) {
 	    my $insn;
-	    my $sz=opcode->size();
+	    my $sz=$opcode->size();
 
 	    if ($gas) {
 		$insn = $opcode->out($#args>=1?$args[$#args]->size():$sz);