Delete bundled copy of OpenSSL and replace with README.

openssl/crypto/bn/asm/s390x-gf2m.pl

Index: openssl/crypto/bn/asm/s390x-gf2m.pl
diff --git a/openssl/crypto/bn/asm/s390x-gf2m.pl b/openssl/crypto/bn/asm/s390x-gf2m.pl
deleted file mode 100644
index 9d18d40e778467677d45549b83755d0b53d0a40b..0000000000000000000000000000000000000000
--- a/openssl/crypto/bn/asm/s390x-gf2m.pl
+++ /dev/null
@@ -1,221 +0,0 @@
-#!/usr/bin/env perl
-#
-# ====================================================================
-# Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
-# project. The module is, however, dual licensed under OpenSSL and
-# CRYPTOGAMS licenses depending on where you obtain it. For further
-# details see http://www.openssl.org/~appro/cryptogams/.
-# ====================================================================
-#
-# May 2011
-#
-# The module implements bn_GF2m_mul_2x2 polynomial multiplication used
-# in bn_gf2m.c. It's kind of low-hanging mechanical port from C for
-# the time being... gcc 4.3 appeared to generate poor code, therefore
-# the effort. And indeed, the module delivers 55%-90%(*) improvement
-# on haviest ECDSA verify and ECDH benchmarks for 163- and 571-bit
-# key lengths on z990, 30%-55%(*) - on z10, and 70%-110%(*) - on z196.
-# This is for 64-bit build. In 32-bit "highgprs" case improvement is
-# even higher, for example on z990 it was measured 80%-150%. ECDSA
-# sign is modest 9%-12% faster. Keep in mind that these coefficients
-# are not ones for bn_GF2m_mul_2x2 itself, as not all CPU time is
-# burnt in it...
-#
-# (*)	gcc 4.1 was observed to deliver better results than gcc 4.3,
-#	so that improvement coefficients can vary from one specific
-#	setup to another.
-
-$flavour = shift;
-
-if ($flavour =~ /3[12]/) {
-        $SIZE_T=4;
-        $g="";
-} else {
-        $SIZE_T=8;
-        $g="g";
-}
-
-while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {}
-open STDOUT,">$output";
-
-$stdframe=16*$SIZE_T+4*8;
-
-$rp="%r2";
-$a1="%r3";
-$a0="%r4";
-$b1="%r5";
-$b0="%r6";
-
-$ra="%r14";
-$sp="%r15";
-
-@T=("%r0","%r1");
-@i=("%r12","%r13");
-
-($a1,$a2,$a4,$a8,$a12,$a48)=map("%r$_",(6..11));
-($lo,$hi,$b)=map("%r$_",(3..5)); $a=$lo; $mask=$a8;
-
-$code.=<<___;
-.text
-
-.type	_mul_1x1,\@function
-.align	16
-_mul_1x1:
-	lgr	$a1,$a
-	sllg	$a2,$a,1
-	sllg	$a4,$a,2
-	sllg	$a8,$a,3
-
-	srag	$lo,$a1,63			# broadcast 63rd bit
-	nihh	$a1,0x1fff
-	srag	@i[0],$a2,63			# broadcast 62nd bit
-	nihh	$a2,0x3fff
-	srag	@i[1],$a4,63			# broadcast 61st bit
-	nihh	$a4,0x7fff
-	ngr	$lo,$b
-	ngr	@i[0],$b
-	ngr	@i[1],$b
-
-	lghi	@T[0],0
-	lgr	$a12,$a1
-	stg	@T[0],`$stdframe+0*8`($sp)	# tab[0]=0
-	xgr	$a12,$a2
-	stg	$a1,`$stdframe+1*8`($sp)	# tab[1]=a1
-	 lgr	$a48,$a4
-	stg	$a2,`$stdframe+2*8`($sp)	# tab[2]=a2
-	 xgr	$a48,$a8
-	stg	$a12,`$stdframe+3*8`($sp)	# tab[3]=a1^a2
-	 xgr	$a1,$a4
-
-	stg	$a4,`$stdframe+4*8`($sp)	# tab[4]=a4
-	xgr	$a2,$a4
-	stg	$a1,`$stdframe+5*8`($sp)	# tab[5]=a1^a4
-	xgr	$a12,$a4
-	stg	$a2,`$stdframe+6*8`($sp)	# tab[6]=a2^a4
-	 xgr	$a1,$a48
-	stg	$a12,`$stdframe+7*8`($sp)	# tab[7]=a1^a2^a4
-	 xgr	$a2,$a48
-
-	stg	$a8,`$stdframe+8*8`($sp)	# tab[8]=a8
-	xgr	$a12,$a48
-	stg	$a1,`$stdframe+9*8`($sp)	# tab[9]=a1^a8
-	 xgr	$a1,$a4
-	stg	$a2,`$stdframe+10*8`($sp)	# tab[10]=a2^a8
-	 xgr	$a2,$a4
-	stg	$a12,`$stdframe+11*8`($sp)	# tab[11]=a1^a2^a8
-
-	xgr	$a12,$a4
-	stg	$a48,`$stdframe+12*8`($sp)	# tab[12]=a4^a8
-	 srlg	$hi,$lo,1
-	stg	$a1,`$stdframe+13*8`($sp)	# tab[13]=a1^a4^a8
-	 sllg	$lo,$lo,63
-	stg	$a2,`$stdframe+14*8`($sp)	# tab[14]=a2^a4^a8
-	 srlg	@T[0],@i[0],2
-	stg	$a12,`$stdframe+15*8`($sp)	# tab[15]=a1^a2^a4^a8
-
-	lghi	$mask,`0xf<<3`
-	sllg	$a1,@i[0],62
-	 sllg	@i[0],$b,3
-	srlg	@T[1],@i[1],3
-	 ngr	@i[0],$mask
-	sllg	$a2,@i[1],61
-	 srlg	@i[1],$b,4-3
-	xgr	$hi,@T[0]
-	 ngr	@i[1],$mask
-	xgr	$lo,$a1
-	xgr	$hi,@T[1]
-	xgr	$lo,$a2
-
-	xg	$lo,$stdframe(@i[0],$sp)
-	srlg	@i[0],$b,8-3
-	ngr	@i[0],$mask
-___
-for($n=1;$n<14;$n++) {
-$code.=<<___;
-	lg	@T[1],$stdframe(@i[1],$sp)
-	srlg	@i[1],$b,`($n+2)*4`-3
-	sllg	@T[0],@T[1],`$n*4`
-	ngr	@i[1],$mask
-	srlg	@T[1],@T[1],`64-$n*4`
-	xgr	$lo,@T[0]
-	xgr	$hi,@T[1]
-___
-	push(@i,shift(@i)); push(@T,shift(@T));
-}
-$code.=<<___;
-	lg	@T[1],$stdframe(@i[1],$sp)
-	sllg	@T[0],@T[1],`$n*4`
-	srlg	@T[1],@T[1],`64-$n*4`
-	xgr	$lo,@T[0]
-	xgr	$hi,@T[1]
-
-	lg	@T[0],$stdframe(@i[0],$sp)
-	sllg	@T[1],@T[0],`($n+1)*4`
-	srlg	@T[0],@T[0],`64-($n+1)*4`
-	xgr	$lo,@T[1]
-	xgr	$hi,@T[0]
-
-	br	$ra
-.size	_mul_1x1,.-_mul_1x1
-
-.globl	bn_GF2m_mul_2x2
-.type	bn_GF2m_mul_2x2,\@function
-.align	16
-bn_GF2m_mul_2x2:
-	stm${g}	%r3,%r15,3*$SIZE_T($sp)
-
-	lghi	%r1,-$stdframe-128
-	la	%r0,0($sp)
-	la	$sp,0(%r1,$sp)			# alloca
-	st${g}	%r0,0($sp)			# back chain
-___
-if ($SIZE_T==8) {
-my @r=map("%r$_",(6..9));
-$code.=<<___;
-	bras	$ra,_mul_1x1			# a1·b1
-	stmg	$lo,$hi,16($rp)
-
-	lg	$a,`$stdframe+128+4*$SIZE_T`($sp)
-	lg	$b,`$stdframe+128+6*$SIZE_T`($sp)
-	bras	$ra,_mul_1x1			# a0·b0
-	stmg	$lo,$hi,0($rp)
-
-	lg	$a,`$stdframe+128+3*$SIZE_T`($sp)
-	lg	$b,`$stdframe+128+5*$SIZE_T`($sp)
-	xg	$a,`$stdframe+128+4*$SIZE_T`($sp)
-	xg	$b,`$stdframe+128+6*$SIZE_T`($sp)
-	bras	$ra,_mul_1x1			# (a0+a1)·(b0+b1)
-	lmg	@r[0],@r[3],0($rp)
-
-	xgr	$lo,$hi
-	xgr	$hi,@r[1]
-	xgr	$lo,@r[0]
-	xgr	$hi,@r[2]
-	xgr	$lo,@r[3]	
-	xgr	$hi,@r[3]
-	xgr	$lo,$hi
-	stg	$hi,16($rp)
-	stg	$lo,8($rp)
-___
-} else {
-$code.=<<___;
-	sllg	%r3,%r3,32
-	sllg	%r5,%r5,32
-	or	%r3,%r4
-	or	%r5,%r6
-	bras	$ra,_mul_1x1
-	rllg	$lo,$lo,32
-	rllg	$hi,$hi,32
-	stmg	$lo,$hi,0($rp)
-___
-}
-$code.=<<___;
-	lm${g}	%r6,%r15,`$stdframe+128+6*$SIZE_T`($sp)
-	br	$ra
-.size	bn_GF2m_mul_2x2,.-bn_GF2m_mul_2x2
-.string	"GF(2^m) Multiplication for s390x, CRYPTOGAMS by <appro\@openssl.org>"
-___
-
-$code =~ s/\`([^\`]*)\`/eval($1)/gem;
-print $code;
-close STDOUT;