Initial import

1 files changed, 247 insertions, 0 deletions

diff --git a/openssl/crypto/perlasm/x86gas.pl b/openssl/crypto/perlasm/x86gas.pl
new file mode 100644
index 00000000..6eab727f
--- /dev/null
+++ b/openssl/crypto/perlasm/x86gas.pl
@@ -0,0 +1,247 @@
+#!/usr/bin/env perl
+
+package x86gas;
+
+*out=\@::out;
+
+$::lbdecor=$::aout?"L":".L";		# local label decoration
+$nmdecor=($::aout or $::coff)?"_":"";	# external name decoration
+
+$initseg="";
+
+$align=16;
+$align=log($align)/log(2) if ($::aout);
+$com_start="#" if ($::aout or $::coff);
+
+sub opsize()
+{ my $reg=shift;
+    if    ($reg =~ m/^%e/o)		{ "l"; }
+    elsif ($reg =~ m/^%[a-d][hl]$/o)	{ "b"; }
+    elsif ($reg =~ m/^%[xm]/o)		{ undef; }
+    else				{ "w"; }
+}
+
+# swap arguments;
+# expand opcode with size suffix;
+# prefix numeric constants with $;
+sub ::generic
+{ my($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";           }
+    undef $suffix if ($dst =~ m/^%[xm]/o || $src =~ m/^%[xm]/o);
+
+    if ($#_==0)				{ &::emit($opcode);		}
+    elsif ($opcode =~ m/^j/o && $#_==1)	{ &::emit($opcode,@arg);	}
+    elsif ($opcode eq "call" && $#_==1)	{ &::emit($opcode,@arg);	}
+    elsif ($opcode =~ m/^set/&& $#_==1)	{ &::emit($opcode,@arg);	}
+    else				{ &::emit($opcode.$suffix,@arg);}
+
+  1;
+}
+#
+# opcodes not covered by ::generic above, mostly inconsistent namings...
+#
+sub ::movzx	{ &::movzb(@_);			}
+sub ::pushfd	{ &::pushfl;			}
+sub ::popfd	{ &::popfl;			}
+sub ::cpuid	{ &::emit(".byte\t0x0f,0xa2");	}
+sub ::rdtsc	{ &::emit(".byte\t0x0f,0x31");	}
+
+sub ::call	{ &::emit("call",(&::islabel($_[0]) or "$nmdecor$_[0]")); }
+sub ::call_ptr	{ &::generic("call","*$_[0]");	}
+sub ::jmp_ptr	{ &::generic("jmp","*$_[0]");	}
+
+*::bswap = sub	{ &::emit("bswap","%$_[0]");	} if (!$::i386);
+
+sub ::DWP
+{ my($addr,$reg1,$reg2,$idx)=@_;
+  my $ret="";
+
+    $addr =~ s/^\s+//;
+    # prepend global references with optional underscore
+    $addr =~ s/^([^\+\-0-9][^\+\-]*)/&::islabel($1) or "$nmdecor$1"/ige;
+
+    $reg1 = "%$reg1" if ($reg1);
+    $reg2 = "%$reg2" if ($reg2);
+
+    $ret .= $addr if (($addr ne "") && ($addr ne 0));
+
+    if ($reg2)
+    {	$idx!= 0 or $idx=1;
+	$ret .= "($reg1,$reg2,$idx)";
+    }
+    elsif ($reg1)
+    {	$ret .= "($reg1)";	}
+
+  $ret;
+}
+sub ::QWP	{ &::DWP(@_);	}
+sub ::BP	{ &::DWP(@_);	}
+sub ::BC	{ @_;		}
+sub ::DWC	{ @_;		}
+
+sub ::file
+{   push(@out,".file\t\"$_[0].s\"\n.text\n");	}
+
+sub ::function_begin_B
+{ my $func=shift;
+  my $global=($func !~ /^_/);
+  my $begin="${::lbdecor}_${func}_begin";
+
+    &::LABEL($func,$global?"$begin":"$nmdecor$func");
+    $func=$nmdecor.$func;
+
+    push(@out,".globl\t$func\n")	if ($global);
+    if ($::coff)
+    {	push(@out,".def\t$func;\t.scl\t".(3-$global).";\t.type\t32;\t.endef\n"); }
+    elsif (($::aout and !$::pic) or $::macosx)
+    { }
+    else
+    {	push(@out,".type	$func,\@function\n"); }
+    push(@out,".align\t$align\n");
+    push(@out,"$func:\n");
+    push(@out,"$begin:\n")		if ($global);
+    $::stack=4;
+}
+
+sub ::function_end_B
+{ my $func=shift;
+    push(@out,".size\t$nmdecor$func,.-".&::LABEL($func)."\n") if ($::elf);
+    $::stack=0;
+    &::wipe_labels();
+}
+
+sub ::comment
+	{
+	if (!defined($com_start) or $::elf)
+		{	# Regarding $::elf above...
+			# GNU and SVR4 as'es use different comment delimiters,
+		push(@out,"\n");	# so we just skip ELF comments...
+		return;
+		}
+	foreach (@_)
+		{
+		if (/^\s*$/)
+			{ push(@out,"\n"); }
+		else
+			{ push(@out,"\t$com_start $_ $com_end\n"); }
+		}
+	}
+
+sub ::external_label
+{   foreach(@_) { &::LABEL($_,$nmdecor.$_); }   }
+
+sub ::public_label
+{   push(@out,".globl\t".&::LABEL($_[0],$nmdecor.$_[0])."\n");   }
+
+sub ::file_end
+{   if (grep {/\b${nmdecor}OPENSSL_ia32cap_P\b/i} @out) {
+	my $tmp=".comm\t${nmdecor}OPENSSL_ia32cap_P,4";
+	if ($::elf)	{ push (@out,"$tmp,4\n"); }
+	else		{ push (@out,"$tmp\n"); }
+    }
+    if ($::macosx)
+    {	if (%non_lazy_ptr)
+    	{   push(@out,".section __IMPORT,__pointers,non_lazy_symbol_pointers\n");
+	    foreach $i (keys %non_lazy_ptr)
+	    {	push(@out,"$non_lazy_ptr{$i}:\n.indirect_symbol\t$i\n.long\t0\n");   }
+	}
+    }
+    push(@out,$initseg) if ($initseg);
+}
+
+sub ::data_byte	{   push(@out,".byte\t".join(',',@_)."\n");   }
+sub ::data_word {   push(@out,".long\t".join(',',@_)."\n");   }
+
+sub ::align
+{ my $val=$_[0],$p2,$i;
+    if ($::aout)
+    {	for ($p2=0;$val!=0;$val>>=1) { $p2++; }
+	$val=$p2-1;
+	$val.=",0x90";
+    }
+    push(@out,".align\t$val\n");
+}
+
+sub ::picmeup
+{ my($dst,$sym,$base,$reflabel)=@_;
+
+    if ($::pic && ($::elf || $::aout))
+    {	if (!defined($base))
+	{   &::call(&::label("PIC_me_up"));
+	    &::set_label("PIC_me_up");
+	    &::blindpop($dst);
+	    $base=$dst;
+	    $reflabel=&::label("PIC_me_up");
+	}
+	if ($::macosx)
+	{   my $indirect=&::static_label("$nmdecor$sym\$non_lazy_ptr");
+	    &::mov($dst,&::DWP("$indirect-$reflabel",$base));
+	    $non_lazy_ptr{"$nmdecor$sym"}=$indirect;
+	}
+	else
+	{   &::lea($dst,&::DWP("_GLOBAL_OFFSET_TABLE_+[.-$reflabel]",
+			    $base));
+	    &::mov($dst,&::DWP("$sym\@GOT",$dst));
+	}
+    }
+    else
+    {	&::lea($dst,&::DWP($sym));	}
+}
+
+sub ::initseg
+{ my $f=$nmdecor.shift;
+
+    if ($::elf)
+    {	$initseg.=<<___;
+.section	.init
+	call	$f
+	jmp	.Linitalign
+.align	$align
+.Linitalign:
+___
+    }
+    elsif ($::coff)
+    {   $initseg.=<<___;	# applies to both Cygwin and Mingw
+.section	.ctors
+.long	$f
+___
+    }
+    elsif ($::macosx)
+    {	$initseg.=<<___;
+.mod_init_func
+.align 2
+.long   $f
+___
+    }
+    elsif ($::aout)
+    {	my $ctor="${nmdecor}_GLOBAL_\$I\$$f";
+	$initseg.=".text\n";
+	$initseg.=".type	$ctor,\@function\n" if ($::pic);
+	$initseg.=<<___;	# OpenBSD way...
+.globl	$ctor
+.align	2
+$ctor:
+	jmp	$f
+___
+    }
+}
+
+sub ::dataseg
+{   push(@out,".data\n");   }
+
+1;