From 4db4882402a79345a075c62a87f2fb7cfe89e283 Mon Sep 17 00:00:00 2001
From: Andy Polyakov <appro@openssl.org>
Date: Wed, 17 Dec 2008 19:56:48 +0000
Subject: [PATCH] perlasm/x86* update: support for 3 and 4 argument
 instructions.

---
 crypto/perlasm/x86_64-xlate.pl | 38 +++++++++++++++----------------
 crypto/perlasm/x86asm.pl       |  9 +++-----
 crypto/perlasm/x86gas.pl       | 41 ++++++++++------------------------
 crypto/perlasm/x86masm.pl      |  3 +--
 4 files changed, 34 insertions(+), 57 deletions(-)

diff --git a/crypto/perlasm/x86_64-xlate.pl b/crypto/perlasm/x86_64-xlate.pl
index 7194b29257..3ed7fcd494 100755
--- a/crypto/perlasm/x86_64-xlate.pl
+++ b/crypto/perlasm/x86_64-xlate.pl
@@ -627,44 +627,42 @@ while($line=<>) {
 
     undef $label;
     undef $opcode;
-    undef $dst;
-    undef $src;
     undef $sz;
+    undef @args;
 
     if ($label=label->re(\$line))	{ print $label->out(); }
 
     if (directive->re(\$line)) {
 	printf "%s",directive->out();
-    } elsif ($opcode=opcode->re(\$line)) { ARGUMENT: {
+    } elsif ($opcode=opcode->re(\$line)) { ARGUMENT: while (1) {
+	my $arg;
 
-	if ($src=register->re(\$line))	{ opcode->size($src->size()); }
-	elsif ($src=const->re(\$line))	{ }
-	elsif ($src=ea->re(\$line))	{ }
-	elsif ($src=expr->re(\$line))	{ }
+	if ($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; }
 
-	last ARGUMENT if ($line !~ /^,/);
-
-	$line = substr($line,1); $line =~ s/^\s+//;
+	push @args,$arg;
 
-	if ($dst=register->re(\$line))	{ opcode->size($dst->size()); }
-	elsif ($dst=const->re(\$line))	{ }
-	elsif ($dst=ea->re(\$line))	{ }
+	last ARGUMENT if ($line !~ /^,/);
 
+	$line =~ s/^,\s*//;
 	} # ARGUMENT:
 
 	$sz=opcode->size();
 
-	if (defined($dst)) {
+	if ($#args>=0) {
+	    my $insn;
 	    if ($gas) {
-		printf "\t%s\t%s,%s",	$opcode->out($dst->size()),
-					$src->out($sz),$dst->out($sz);
+		$insn = $opcode->out($#args>=1?$args[$#args]->size():$sz);
 	    } else {
+		$insn = $opcode->out();
+		@args = reverse(@args);
 		undef $sz if ($nasm && $opcode->mnemonic() eq "lea");
-		printf "\t%s\t%s,%s",	$opcode->out(),
-					$dst->out($sz),$src->out($sz);
 	    }
-	} elsif (defined($src)) {
-	    printf "\t%s\t%s",$opcode->out(),$src->out($sz);
+	    for (@args) { $_ = $_->out($sz); }
+	    printf "\t%s\t%s", $insn, join(",",@args);
 	} else {
 	    printf "\t%s",$opcode->out();
 	}
diff --git a/crypto/perlasm/x86asm.pl b/crypto/perlasm/x86asm.pl
index 3ec97221a9..28080caaa6 100644
--- a/crypto/perlasm/x86asm.pl
+++ b/crypto/perlasm/x86asm.pl
@@ -17,7 +17,7 @@ $i386=0;
 sub ::AUTOLOAD
 { my $opcode = $AUTOLOAD;
 
-    die "more than 2 arguments passed to $opcode" if ($#_>1);
+    die "more than 4 arguments passed to $opcode" if ($#_>3);
 
     $opcode =~ s/.*:://;
     if    ($opcode =~ /^push/) { $stack+=4; }
@@ -66,8 +66,8 @@ sub ::rotr	{ &ror(@_);	}
 sub ::exch	{ &xchg(@_);	}
 sub ::halt	{ &hlt;		}
 sub ::movz	{ &movzx(@_);	}
-sub ::pushf	{ &::pushfd;	}
-sub ::popf	{ &::popfd;	}
+sub ::pushf	{ &pushfd;	}
+sub ::popf	{ &popfd;	}
 
 # 3 argument instructions
 sub ::movq
@@ -79,9 +79,6 @@ sub ::movq
     else
     {	&::generic("movq",@_);			}
 }
-sub ::pshufw	{ &::emit("pshufw",@_); }
-sub ::shld	{ &::emit("shld",@_);   }
-sub ::shrd	{ &::emit("shrd",@_);   }
 
 # label management
 $lbdecor="L";		# local label decoration, set by package
diff --git a/crypto/perlasm/x86gas.pl b/crypto/perlasm/x86gas.pl
index e3fbb940f0..6eab727fd4 100644
--- a/crypto/perlasm/x86gas.pl
+++ b/crypto/perlasm/x86gas.pl
@@ -25,24 +25,20 @@ sub opsize()
 # expand opcode with size suffix;
 # prefix numeric constants with $;
 sub ::generic
-{ my($opcode,$dst,$src)=@_;
-  my($tmp,$suffix,@arg);
-
-    if (defined($src))
-    {	$src =~ s/^(e?[a-dsixphl]{2})$/%$1/o;
-	$src =~ s/^(x?mm[0-7])$/%$1/o;
-	$src =~ s/^(\-?[0-9]+)$/\$$1/o;
-	$src =~ s/^(\-?0x[0-9a-f]+)$/\$$1/o;
-	push(@arg,$src);
-    }
-    if (defined($dst))
-    {	$dst =~ s/^(\*?)(e?[a-dsixphl]{2})$/$1%$2/o;
-	$dst =~ s/^(x?mm[0-7])$/%$1/o;
-	$dst =~ s/^(\-?[0-9]+)$/\$$1/o		if(!defined($src));
-	$dst =~ s/^(\-?0x[0-9a-f]+)$/\$$1/o	if(!defined($src));
-	push(@arg,$dst);
+{ my($opcode,@arg)=@_;
+  my($suffix,$dst,$src);
+
+    @arg=reverse(@arg);
+
+    for (@arg)
+    {	s/^(\*?)(e?[a-dsixphl]{2})$/$1%$2/o;	# gp registers
+	s/^([xy]?mm[0-7])$/%$1/o;		# xmm/mmx registers
+	s/^(\-?[0-9]+)$/\$$1/o;			# constants
+	s/^(\-?0x[0-9a-f]+)$/\$$1/o;		# constants
     }
 
+    $dst = $arg[$#arg]		if ($#arg>=0);
+    $src = $arg[$#arg-1]	if ($#arg>=1);
     if    ($dst =~ m/^%/o)	{ $suffix=&opsize($dst); }
     elsif ($src =~ m/^%/o)	{ $suffix=&opsize($src); }
     else			{ $suffix="l";           }
@@ -71,19 +67,6 @@ sub ::jmp_ptr	{ &::generic("jmp","*$_[0]");	}
 
 *::bswap = sub	{ &::emit("bswap","%$_[0]");	} if (!$::i386);
 
-*::pshufw = sub
-{ my($dst,$src,$magic)=@_;
-    &::emit("pshufw","\$$magic","%$src","%$dst");
-};
-*::shld = sub
-{ my($dst,$src,$bits)=@_;
-    &::emit("shldl",$bits eq "cl"?"%cl":"\$$bits","%$src","%$dst");
-};
-*::shrd = sub
-{ my($dst,$src,$bits)=@_;
-    &::emit("shrdl",$bits eq "cl"?"%cl":"\$$bits","%$src","%$dst");
-};
-
 sub ::DWP
 { my($addr,$reg1,$reg2,$idx)=@_;
   my $ret="";
diff --git a/crypto/perlasm/x86masm.pl b/crypto/perlasm/x86masm.pl
index cde38a11a4..4eca7bc367 100644
--- a/crypto/perlasm/x86masm.pl
+++ b/crypto/perlasm/x86masm.pl
@@ -14,8 +14,7 @@ sub ::generic
 { my ($opcode,@arg)=@_;
 
     # fix hexadecimal constants
-    $arg[0] =~ s/0x([0-9a-f]+)/0$1h/oi	if (defined($arg[0]));
-    $arg[1] =~ s/0x([0-9a-f]+)/0$1h/oi	if (defined($arg[1]));
+    for (@arg) { s/0x([0-9a-f]+)/0$1h/oi; }
 
     # fix xmm references
     $arg[0] =~ s/\b[A-Z]+WORD\s+PTR/XMMWORD PTR/i if ($arg[1]=~/\bxmm[0-7]\b/i);
-- 
2.25.1