Merge remote-tracking branch 'origin/released'

Conflicts:
	openssl/Configure
	openssl/Makefile
	openssl/crypto/opensslconf.h
	openssl/util/mk1mf.pl
	openssl/util/pl/VC-32.pl

1 files changed, 1058 insertions, 49 deletions

diff --git a/openssl/crypto/sha/asm/sha1-586.pl b/openssl/crypto/sha/asm/sha1-586.pl
index a1f876281..1084d227f 100644
--- a/openssl/crypto/sha/asm/sha1-586.pl
+++ b/openssl/crypto/sha/asm/sha1-586.pl
@@ -12,6 +12,8 @@
 # commentary below], and in 2006 the rest was rewritten in order to
 # gain freedom to liberate licensing terms.
 
+# January, September 2004.
+#
 # It was noted that Intel IA-32 C compiler generates code which
 # performs ~30% *faster* on P4 CPU than original *hand-coded*
 # SHA1 assembler implementation. To address this problem (and
@@ -31,12 +33,92 @@
 # ----------------------------------------------------------------
 #					<appro@fy.chalmers.se>
 
+# August 2009.
+#
+# George Spelvin has tipped that F_40_59(b,c,d) can be rewritten as
+# '(c&d) + (b&(c^d))', which allows to accumulate partial results
+# and lighten "pressure" on scratch registers. This resulted in
+# >12% performance improvement on contemporary AMD cores (with no
+# degradation on other CPUs:-). Also, the code was revised to maximize
+# "distance" between instructions producing input to 'lea' instruction
+# and the 'lea' instruction itself, which is essential for Intel Atom
+# core and resulted in ~15% improvement.
+
+# October 2010.
+#
+# Add SSSE3, Supplemental[!] SSE3, implementation. The idea behind it
+# is to offload message schedule denoted by Wt in NIST specification,
+# or Xupdate in OpenSSL source, to SIMD unit. The idea is not novel,
+# and in SSE2 context was first explored by Dean Gaudet in 2004, see
+# http://arctic.org/~dean/crypto/sha1.html. Since then several things
+# have changed that made it interesting again:
+#
+# a) XMM units became faster and wider;
+# b) instruction set became more versatile;
+# c) an important observation was made by Max Locktykhin, which made
+#    it possible to reduce amount of instructions required to perform
+#    the operation in question, for further details see
+#    http://software.intel.com/en-us/articles/improving-the-performance-of-the-secure-hash-algorithm-1/.
+
+# April 2011.
+#
+# Add AVX code path, probably most controversial... The thing is that
+# switch to AVX alone improves performance by as little as 4% in
+# comparison to SSSE3 code path. But below result doesn't look like
+# 4% improvement... Trouble is that Sandy Bridge decodes 'ro[rl]' as
+# pair of µ-ops, and it's the additional µ-ops, two per round, that
+# make it run slower than Core2 and Westmere. But 'sh[rl]d' is decoded
+# as single µ-op by Sandy Bridge and it's replacing 'ro[rl]' with
+# equivalent 'sh[rl]d' that is responsible for the impressive 5.1
+# cycles per processed byte. But 'sh[rl]d' is not something that used
+# to be fast, nor does it appear to be fast in upcoming Bulldozer
+# [according to its optimization manual]. Which is why AVX code path
+# is guarded by *both* AVX and synthetic bit denoting Intel CPUs.
+# One can argue that it's unfair to AMD, but without 'sh[rl]d' it
+# makes no sense to keep the AVX code path. If somebody feels that
+# strongly, it's probably more appropriate to discuss possibility of
+# using vector rotate XOP on AMD...
+
+######################################################################
+# Current performance is summarized in following table. Numbers are
+# CPU clock cycles spent to process single byte (less is better).
+#
+#		x86		SSSE3		AVX
+# Pentium	15.7		-
+# PIII		11.5		-
+# P4		10.6		-
+# AMD K8	7.1		-
+# Core2		7.3		6.1/+20%	-
+# Atom		12.5		9.5(*)/+32%	-
+# Westmere	7.3		5.6/+30%	-
+# Sandy Bridge	8.8		6.2/+40%	5.1(**)/+70%
+#
+# (*)	Loop is 1056 instructions long and expected result is ~8.25.
+#	It remains mystery [to me] why ILP is limited to 1.7.
+#
+# (**)	As per above comment, the result is for AVX *plus* sh[rl]d.
+
 $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
 push(@INC,"${dir}","${dir}../../perlasm");
 require "x86asm.pl";
 
 &asm_init($ARGV[0],"sha1-586.pl",$ARGV[$#ARGV] eq "386");
 
+$xmm=$ymm=0;
+for (@ARGV) { $xmm=1 if (/-DOPENSSL_IA32_SSE2/); }
+
+$ymm=1 if ($xmm &&
+		`$ENV{CC} -Wa,-v -c -o /dev/null -x assembler /dev/null 2>&1`
+			=~ /GNU assembler version ([2-9]\.[0-9]+)/ &&
+		$1>=2.19);	# first version supporting AVX
+
+$ymm=1 if ($xmm && !$ymm && $ARGV[0] eq "win32n" && 
+		`nasm -v 2>&1` =~ /NASM version ([2-9]\.[0-9]+)/ &&
+		$1>=2.03);	# first version supporting AVX
+
+&external_label("OPENSSL_ia32cap_P") if ($xmm);
+
+
 $A="eax";
 $B="ebx";
 $C="ecx";
@@ -47,6 +129,10 @@ $tmp1="ebp";
 
 @V=($A,$B,$C,$D,$E,$T);
 
+$alt=0;	# 1 denotes alternative IALU implementation, which performs
+	# 8% *worse* on P4, same on Westmere and Atom, 2% better on
+	# Sandy Bridge...
+
 sub BODY_00_15
 	{
 	local($n,$a,$b,$c,$d,$e,$f)=@_;
@@ -59,16 +145,18 @@ sub BODY_00_15
 	&rotl($tmp1,5);			# tmp1=ROTATE(a,5)
 	 &xor($f,$d);
 	&add($tmp1,$e);			# tmp1+=e;
-	 &and($f,$b);
-	&mov($e,&swtmp($n%16));		# e becomes volatile and is loaded
+	 &mov($e,&swtmp($n%16));	# e becomes volatile and is loaded
 	 				# with xi, also note that e becomes
 					# f in next round...
-	 &xor($f,$d);			# f holds F_00_19(b,c,d)
+	&and($f,$b);
 	&rotr($b,2);			# b=ROTATE(b,30)
-	 &lea($tmp1,&DWP(0x5a827999,$tmp1,$e));	# tmp1+=K_00_19+xi
+	 &xor($f,$d);			# f holds F_00_19(b,c,d)
+	&lea($tmp1,&DWP(0x5a827999,$tmp1,$e));	# tmp1+=K_00_19+xi
 
-	if ($n==15) { &add($f,$tmp1); }	# f+=tmp1
+	if ($n==15) { &mov($e,&swtmp(($n+1)%16));# pre-fetch f for next round
+		      &add($f,$tmp1); }	# f+=tmp1
 	else        { &add($tmp1,$f); }	# f becomes a in next round
+	&mov($tmp1,$a)			if ($alt && $n==15);
 	}
 
 sub BODY_16_19
@@ -77,22 +165,41 @@ sub BODY_16_19
 
 	&comment("16_19 $n");
 
-	&mov($f,&swtmp($n%16));		# f to hold Xupdate(xi,xa,xb,xc,xd)
-	 &mov($tmp1,$c);		# tmp1 to hold F_00_19(b,c,d)
-	&xor($f,&swtmp(($n+2)%16));
-	 &xor($tmp1,$d);
-	&xor($f,&swtmp(($n+8)%16));
-	 &and($tmp1,$b);		# tmp1 holds F_00_19(b,c,d)
-	&rotr($b,2);			# b=ROTATE(b,30)
+if ($alt) {
+	&xor($c,$d);
+	 &xor($f,&swtmp(($n+2)%16));	# f to hold Xupdate(xi,xa,xb,xc,xd)
+	&and($tmp1,$c);			# tmp1 to hold F_00_19(b,c,d), b&=c^d
+	 &xor($f,&swtmp(($n+8)%16));
+	&xor($tmp1,$d);			# tmp1=F_00_19(b,c,d)
+	 &xor($f,&swtmp(($n+13)%16));	# f holds xa^xb^xc^xd
+	&rotl($f,1);			# f=ROTATE(f,1)
+	 &add($e,$tmp1);		# e+=F_00_19(b,c,d)
+	&xor($c,$d);			# restore $c
+	 &mov($tmp1,$a);		# b in next round
+	&rotr($b,$n==16?2:7);		# b=ROTATE(b,30)
+	 &mov(&swtmp($n%16),$f);	# xi=f
+	&rotl($a,5);			# ROTATE(a,5)
+	 &lea($f,&DWP(0x5a827999,$f,$e));# f+=F_00_19(b,c,d)+e
+	&mov($e,&swtmp(($n+1)%16));	# pre-fetch f for next round
+	 &add($f,$a);			# f+=ROTATE(a,5)
+} else {
+	&mov($tmp1,$c);			# tmp1 to hold F_00_19(b,c,d)
+	 &xor($f,&swtmp(($n+2)%16));	# f to hold Xupdate(xi,xa,xb,xc,xd)
+	&xor($tmp1,$d);
+	 &xor($f,&swtmp(($n+8)%16));
+	&and($tmp1,$b);
 	 &xor($f,&swtmp(($n+13)%16));	# f holds xa^xb^xc^xd
 	&rotl($f,1);			# f=ROTATE(f,1)
 	 &xor($tmp1,$d);		# tmp1=F_00_19(b,c,d)
-	&mov(&swtmp($n%16),$f);		# xi=f
-	&lea($f,&DWP(0x5a827999,$f,$e));# f+=K_00_19+e
-	 &mov($e,$a);			# e becomes volatile
-	&rotl($e,5);			# e=ROTATE(a,5)
-	 &add($f,$tmp1);		# f+=F_00_19(b,c,d)
-	&add($f,$e);			# f+=ROTATE(a,5)
+	&add($e,$tmp1);			# e+=F_00_19(b,c,d)
+	 &mov($tmp1,$a);
+	&rotr($b,2);			# b=ROTATE(b,30)
+	 &mov(&swtmp($n%16),$f);	# xi=f
+	&rotl($tmp1,5);			# ROTATE(a,5)
+	 &lea($f,&DWP(0x5a827999,$f,$e));# f+=F_00_19(b,c,d)+e
+	&mov($e,&swtmp(($n+1)%16));	# pre-fetch f for next round
+	 &add($f,$tmp1);		# f+=ROTATE(a,5)
+}
 	}
 
 sub BODY_20_39
@@ -102,21 +209,41 @@ sub BODY_20_39
 
 	&comment("20_39 $n");
 
+if ($alt) {
+	&xor($tmp1,$c);			# tmp1 to hold F_20_39(b,c,d), b^=c
+	 &xor($f,&swtmp(($n+2)%16));	# f to hold Xupdate(xi,xa,xb,xc,xd)
+	&xor($tmp1,$d);			# tmp1 holds F_20_39(b,c,d)
+	 &xor($f,&swtmp(($n+8)%16));
+	&add($e,$tmp1);			# e+=F_20_39(b,c,d)
+	 &xor($f,&swtmp(($n+13)%16));	# f holds xa^xb^xc^xd
+	&rotl($f,1);			# f=ROTATE(f,1)
+	 &mov($tmp1,$a);		# b in next round
+	&rotr($b,7);			# b=ROTATE(b,30)
+	 &mov(&swtmp($n%16),$f)		if($n<77);# xi=f
+	&rotl($a,5);			# ROTATE(a,5)
+	 &xor($b,$c)			if($n==39);# warm up for BODY_40_59
+	&and($tmp1,$b)			if($n==39);
+	 &lea($f,&DWP($K,$f,$e));	# f+=e+K_XX_YY
+	&mov($e,&swtmp(($n+1)%16))	if($n<79);# pre-fetch f for next round
+	 &add($f,$a);			# f+=ROTATE(a,5)
+	&rotr($a,5)			if ($n==79);
+} else {
 	&mov($tmp1,$b);			# tmp1 to hold F_20_39(b,c,d)
-	 &mov($f,&swtmp($n%16));	# f to hold Xupdate(xi,xa,xb,xc,xd)
-	&rotr($b,2);			# b=ROTATE(b,30)
-	 &xor($f,&swtmp(($n+2)%16));
+	 &xor($f,&swtmp(($n+2)%16));	# f to hold Xupdate(xi,xa,xb,xc,xd)
 	&xor($tmp1,$c);
 	 &xor($f,&swtmp(($n+8)%16));
 	&xor($tmp1,$d);			# tmp1 holds F_20_39(b,c,d)
 	 &xor($f,&swtmp(($n+13)%16));	# f holds xa^xb^xc^xd
 	&rotl($f,1);			# f=ROTATE(f,1)
-	 &add($tmp1,$e);
-	&mov(&swtmp($n%16),$f);		# xi=f
-	 &mov($e,$a);			# e becomes volatile
-	&rotl($e,5);			# e=ROTATE(a,5)
-	 &lea($f,&DWP($K,$f,$tmp1));	# f+=K_20_39+e
-	&add($f,$e);			# f+=ROTATE(a,5)
+	 &add($e,$tmp1);		# e+=F_20_39(b,c,d)
+	&rotr($b,2);			# b=ROTATE(b,30)
+	 &mov($tmp1,$a);
+	&rotl($tmp1,5);			# ROTATE(a,5)
+	 &mov(&swtmp($n%16),$f) if($n<77);# xi=f
+	&lea($f,&DWP($K,$f,$e));	# f+=e+K_XX_YY
+	 &mov($e,&swtmp(($n+1)%16)) if($n<79);# pre-fetch f for next round
+	&add($f,$tmp1);			# f+=ROTATE(a,5)
+}
 	}
 
 sub BODY_40_59
@@ -125,41 +252,86 @@ sub BODY_40_59
 
 	&comment("40_59 $n");
 
-	&mov($f,&swtmp($n%16));		# f to hold Xupdate(xi,xa,xb,xc,xd)
-	 &mov($tmp1,&swtmp(($n+2)%16));
-	&xor($f,$tmp1);
-	 &mov($tmp1,&swtmp(($n+8)%16));
-	&xor($f,$tmp1);
-	 &mov($tmp1,&swtmp(($n+13)%16));
-	&xor($f,$tmp1);			# f holds xa^xb^xc^xd
-	 &mov($tmp1,$b);		# tmp1 to hold F_40_59(b,c,d)
+if ($alt) {
+	&add($e,$tmp1);			# e+=b&(c^d)
+	 &xor($f,&swtmp(($n+2)%16));	# f to hold Xupdate(xi,xa,xb,xc,xd)
+	&mov($tmp1,$d);
+	 &xor($f,&swtmp(($n+8)%16));
+	&xor($c,$d);			# restore $c
+	 &xor($f,&swtmp(($n+13)%16));	# f holds xa^xb^xc^xd
 	&rotl($f,1);			# f=ROTATE(f,1)
-	 &or($tmp1,$c);
-	&mov(&swtmp($n%16),$f);		# xi=f
-	 &and($tmp1,$d);
-	&lea($f,&DWP(0x8f1bbcdc,$f,$e));# f+=K_40_59+e
-	 &mov($e,$b);			# e becomes volatile and is used
-					# to calculate F_40_59(b,c,d)
+	 &and($tmp1,$c);
+	&rotr($b,7);			# b=ROTATE(b,30)
+	 &add($e,$tmp1);		# e+=c&d
+	&mov($tmp1,$a);			# b in next round
+	 &mov(&swtmp($n%16),$f);	# xi=f
+	&rotl($a,5);			# ROTATE(a,5)
+	 &xor($b,$c)			if ($n<59);
+	&and($tmp1,$b)			if ($n<59);# tmp1 to hold F_40_59(b,c,d)
+	 &lea($f,&DWP(0x8f1bbcdc,$f,$e));# f+=K_40_59+e+(b&(c^d))
+	&mov($e,&swtmp(($n+1)%16));	# pre-fetch f for next round
+	 &add($f,$a);			# f+=ROTATE(a,5)
+} else {
+	&mov($tmp1,$c);			# tmp1 to hold F_40_59(b,c,d)
+	 &xor($f,&swtmp(($n+2)%16));	# f to hold Xupdate(xi,xa,xb,xc,xd)
+	&xor($tmp1,$d);
+	 &xor($f,&swtmp(($n+8)%16));
+	&and($tmp1,$b);
+	 &xor($f,&swtmp(($n+13)%16));	# f holds xa^xb^xc^xd
+	&rotl($f,1);			# f=ROTATE(f,1)
+	 &add($tmp1,$e);		# b&(c^d)+=e
 	&rotr($b,2);			# b=ROTATE(b,30)
-	 &and($e,$c);
-	&or($tmp1,$e);			# tmp1 holds F_40_59(b,c,d)		
-	 &mov($e,$a);
-	&rotl($e,5);			# e=ROTATE(a,5)
-	 &add($f,$tmp1);		# f+=tmp1;
+	 &mov($e,$a);			# e becomes volatile
+	&rotl($e,5);			# ROTATE(a,5)
+	 &mov(&swtmp($n%16),$f);	# xi=f
+	&lea($f,&DWP(0x8f1bbcdc,$f,$tmp1));# f+=K_40_59+e+(b&(c^d))
+	 &mov($tmp1,$c);
 	&add($f,$e);			# f+=ROTATE(a,5)
+	 &and($tmp1,$d);
+	&mov($e,&swtmp(($n+1)%16));	# pre-fetch f for next round
+	 &add($f,$tmp1);		# f+=c&d
+}
 	}
 
 &function_begin("sha1_block_data_order");
+if ($xmm) {
+  &static_label("ssse3_shortcut");
+  &static_label("avx_shortcut")		if ($ymm);
+  &static_label("K_XX_XX");
+
+	&call	(&label("pic_point"));	# make it PIC!
+  &set_label("pic_point");
+	&blindpop($tmp1);
+	&picmeup($T,"OPENSSL_ia32cap_P",$tmp1,&label("pic_point"));
+	&lea	($tmp1,&DWP(&label("K_XX_XX")."-".&label("pic_point"),$tmp1));
+
+	&mov	($A,&DWP(0,$T));
+	&mov	($D,&DWP(4,$T));
+	&test	($D,1<<9);		# check SSSE3 bit
+	&jz	(&label("x86"));
+	&test	($A,1<<24);		# check FXSR bit
+	&jz	(&label("x86"));
+	if ($ymm) {
+		&and	($D,1<<28);		# mask AVX bit
+		&and	($A,1<<30);		# mask "Intel CPU" bit
+		&or	($A,$D);
+		&cmp	($A,1<<28|1<<30);
+		&je	(&label("avx_shortcut"));
+	}
+	&jmp	(&label("ssse3_shortcut"));
+  &set_label("x86",16);
+}
 	&mov($tmp1,&wparam(0));	# SHA_CTX *c
 	&mov($T,&wparam(1));	# const void *input
 	&mov($A,&wparam(2));	# size_t num
-	&stack_push(16);	# allocate X[16]
+	&stack_push(16+3);	# allocate X[16]
 	&shl($A,6);
 	&add($A,$T);
 	&mov(&wparam(2),$A);	# pointer beyond the end of input
 	&mov($E,&DWP(16,$tmp1));# pre-load E
+	&jmp(&label("loop"));
 
-	&set_label("loop",16);
+&set_label("loop",16);
 
 	# copy input chunk to X, but reversing byte order!
 	for ($i=0; $i<16; $i+=4)
@@ -213,8 +385,845 @@ sub BODY_40_59
 	&mov(&DWP(16,$tmp1),$C);
 	&jb(&label("loop"));
 
-	&stack_pop(16);
+	&stack_pop(16+3);
 &function_end("sha1_block_data_order");
+
+if ($xmm) {
+######################################################################
+# The SSSE3 implementation.
+#
+# %xmm[0-7] are used as ring @X[] buffer containing quadruples of last
+# 32 elements of the message schedule or Xupdate outputs. First 4
+# quadruples are simply byte-swapped input, next 4 are calculated
+# according to method originally suggested by Dean Gaudet (modulo
+# being implemented in SSSE3). Once 8 quadruples or 32 elements are
+# collected, it switches to routine proposed by Max Locktyukhin.
+#
+# Calculations inevitably require temporary reqisters, and there are
+# no %xmm registers left to spare. For this reason part of the ring
+# buffer, X[2..4] to be specific, is offloaded to 3 quadriples ring
+# buffer on the stack. Keep in mind that X[2] is alias X[-6], X[3] -
+# X[-5], and X[4] - X[-4]...
+#
+# Another notable optimization is aggressive stack frame compression
+# aiming to minimize amount of 9-byte instructions...
+#
+# Yet another notable optimization is "jumping" $B variable. It means
+# that there is no register permanently allocated for $B value. This
+# allowed to eliminate one instruction from body_20_39...
+#
+my $Xi=4;			# 4xSIMD Xupdate round, start pre-seeded
+my @X=map("xmm$_",(4..7,0..3));	# pre-seeded for $Xi=4
+my @V=($A,$B,$C,$D,$E);
+my $j=0;			# hash round
+my @T=($T,$tmp1);
+my $inp;
+
+my $_rol=sub { &rol(@_) };
+my $_ror=sub { &ror(@_) };
+
+&function_begin("_sha1_block_data_order_ssse3");
+	&call	(&label("pic_point"));	# make it PIC!
+	&set_label("pic_point");
+	&blindpop($tmp1);
+	&lea	($tmp1,&DWP(&label("K_XX_XX")."-".&label("pic_point"),$tmp1));
+&set_label("ssse3_shortcut");
+
+	&movdqa	(@X[3],&QWP(0,$tmp1));		# K_00_19
+	&movdqa	(@X[4],&QWP(16,$tmp1));		# K_20_39
+	&movdqa	(@X[5],&QWP(32,$tmp1));		# K_40_59
+	&movdqa	(@X[6],&QWP(48,$tmp1));		# K_60_79
+	&movdqa	(@X[2],&QWP(64,$tmp1));		# pbswap mask
+
+	&mov	($E,&wparam(0));		# load argument block
+	&mov	($inp=@T[1],&wparam(1));
+	&mov	($D,&wparam(2));
+	&mov	(@T[0],"esp");
+
+	# stack frame layout
+	#
+	# +0	X[0]+K	X[1]+K	X[2]+K	X[3]+K	# XMM->IALU xfer area
+	#	X[4]+K	X[5]+K	X[6]+K	X[7]+K
+	#	X[8]+K	X[9]+K	X[10]+K	X[11]+K
+	#	X[12]+K	X[13]+K	X[14]+K	X[15]+K
+	#
+	# +64	X[0]	X[1]	X[2]	X[3]	# XMM->XMM backtrace area
+	#	X[4]	X[5]	X[6]	X[7]
+	#	X[8]	X[9]	X[10]	X[11]	# even borrowed for K_00_19
+	#
+	# +112	K_20_39	K_20_39	K_20_39	K_20_39	# constants
+	#	K_40_59	K_40_59	K_40_59	K_40_59
+	#	K_60_79	K_60_79	K_60_79	K_60_79
+	#	K_00_19	K_00_19	K_00_19	K_00_19
+	#	pbswap mask
+	#
+	# +192	ctx				# argument block
+	# +196	inp
+	# +200	end
+	# +204	esp
+	&sub	("esp",208);
+	&and	("esp",-64);
+
+	&movdqa	(&QWP(112+0,"esp"),@X[4]);	# copy constants
+	&movdqa	(&QWP(112+16,"esp"),@X[5]);
+	&movdqa	(&QWP(112+32,"esp"),@X[6]);
+	&shl	($D,6);				# len*64
+	&movdqa	(&QWP(112+48,"esp"),@X[3]);
+	&add	($D,$inp);			# end of input
+	&movdqa	(&QWP(112+64,"esp"),@X[2]);
+	&add	($inp,64);
+	&mov	(&DWP(192+0,"esp"),$E);		# save argument block
+	&mov	(&DWP(192+4,"esp"),$inp);
+	&mov	(&DWP(192+8,"esp"),$D);
+	&mov	(&DWP(192+12,"esp"),@T[0]);	# save original %esp
+
+	&mov	($A,&DWP(0,$E));		# load context
+	&mov	($B,&DWP(4,$E));
+	&mov	($C,&DWP(8,$E));
+	&mov	($D,&DWP(12,$E));
+	&mov	($E,&DWP(16,$E));
+	&mov	(@T[0],$B);			# magic seed
+
+	&movdqu	(@X[-4&7],&QWP(-64,$inp));	# load input to %xmm[0-3]
+	&movdqu	(@X[-3&7],&QWP(-48,$inp));
+	&movdqu	(@X[-2&7],&QWP(-32,$inp));
+	&movdqu	(@X[-1&7],&QWP(-16,$inp));
+	&pshufb	(@X[-4&7],@X[2]);		# byte swap
+	&pshufb	(@X[-3&7],@X[2]);
+	&pshufb	(@X[-2&7],@X[2]);
+	&movdqa	(&QWP(112-16,"esp"),@X[3]);	# borrow last backtrace slot
+	&pshufb	(@X[-1&7],@X[2]);
+	&paddd	(@X[-4&7],@X[3]);		# add K_00_19
+	&paddd	(@X[-3&7],@X[3]);
+	&paddd	(@X[-2&7],@X[3]);
+	&movdqa	(&QWP(0,"esp"),@X[-4&7]);	# X[]+K xfer to IALU
+	&psubd	(@X[-4&7],@X[3]);		# restore X[]
+	&movdqa	(&QWP(0+16,"esp"),@X[-3&7]);
+	&psubd	(@X[-3&7],@X[3]);
+	&movdqa	(&QWP(0+32,"esp"),@X[-2&7]);
+	&psubd	(@X[-2&7],@X[3]);
+	&movdqa	(@X[0],@X[-3&7]);
+	&jmp	(&label("loop"));
+
+######################################################################
+# SSE instruction sequence is first broken to groups of indepentent
+# instructions, independent in respect to their inputs and shifter
+# (not all architectures have more than one). Then IALU instructions
+# are "knitted in" between the SSE groups. Distance is maintained for
+# SSE latency of 2 in hope that it fits better upcoming AMD Bulldozer
+# [which allegedly also implements SSSE3]...
+#
+# Temporary registers usage. X[2] is volatile at the entry and at the
+# end is restored from backtrace ring buffer. X[3] is expected to
+# contain current K_XX_XX constant and is used to caclulate X[-1]+K
+# from previous round, it becomes volatile the moment the value is
+# saved to stack for transfer to IALU. X[4] becomes volatile whenever
+# X[-4] is accumulated and offloaded to backtrace ring buffer, at the
+# end it is loaded with next K_XX_XX [which becomes X[3] in next
+# round]...
+#
+sub Xupdate_ssse3_16_31()		# recall that $Xi starts wtih 4
+{ use integer;
+  my $body = shift;
+  my @insns = (&$body,&$body,&$body,&$body);	# 40 instructions
+  my ($a,$b,$c,$d,$e);
+
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	&palignr(@X[0],@X[-4&7],8);	# compose "X[-14]" in "X[0]"
+	&movdqa	(@X[2],@X[-1&7]);
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+
+	  &paddd	(@X[3],@X[-1&7]);
+	  &movdqa	(&QWP(64+16*(($Xi-4)%3),"esp"),@X[-4&7]);# save X[] to backtrace buffer
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	&psrldq	(@X[2],4);		# "X[-3]", 3 dwords
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	&pxor	(@X[0],@X[-4&7]);	# "X[0]"^="X[-16]"
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+
+	&pxor	(@X[2],@X[-2&7]);	# "X[-3]"^"X[-8]"
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+
+	&pxor	(@X[0],@X[2]);		# "X[0]"^="X[-3]"^"X[-8]"
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	  &movdqa	(&QWP(0+16*(($Xi-1)&3),"esp"),@X[3]);	# X[]+K xfer to IALU
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+
+	&movdqa	(@X[4],@X[0]);
+	&movdqa	(@X[2],@X[0]);
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+
+	&pslldq	(@X[4],12);		# "X[0]"<<96, extract one dword
+	&paddd	(@X[0],@X[0]);
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+
+	&psrld	(@X[2],31);
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	&movdqa	(@X[3],@X[4]);
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+
+	&psrld	(@X[4],30);
+	&por	(@X[0],@X[2]);		# "X[0]"<<<=1
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	  &movdqa	(@X[2],&QWP(64+16*(($Xi-6)%3),"esp")) if ($Xi>5);	# restore X[] from backtrace buffer
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+
+	&pslld	(@X[3],2);
+	&pxor	(@X[0],@X[4]);
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	  &movdqa	(@X[4],&QWP(112-16+16*(($Xi)/5),"esp"));	# K_XX_XX
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+
+	&pxor	(@X[0],@X[3]);		# "X[0]"^=("X[0]"<<96)<<<2
+	  &movdqa	(@X[1],@X[-2&7])	if ($Xi<7);
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+
+	 foreach (@insns) { eval; }	# remaining instructions [if any]
+
+  $Xi++;	push(@X,shift(@X));	# "rotate" X[]
+}
+
+sub Xupdate_ssse3_32_79()
+{ use integer;
+  my $body = shift;
+  my @insns = (&$body,&$body,&$body,&$body);	# 32 to 48 instructions
+  my ($a,$b,$c,$d,$e);
+
+	&movdqa	(@X[2],@X[-1&7])	if ($Xi==8);
+	 eval(shift(@insns));		# body_20_39
+	&pxor	(@X[0],@X[-4&7]);	# "X[0]"="X[-32]"^"X[-16]"
+	&palignr(@X[2],@X[-2&7],8);	# compose "X[-6]"
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));		# rol
+
+	&pxor	(@X[0],@X[-7&7]);	# "X[0]"^="X[-28]"
+	  &movdqa	(&QWP(64+16*(($Xi-4)%3),"esp"),@X[-4&7]);	# save X[] to backtrace buffer
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 if ($Xi%5) {
+	  &movdqa	(@X[4],@X[3]);	# "perpetuate" K_XX_XX...
+	 } else {			# ... or load next one
+	  &movdqa	(@X[4],&QWP(112-16+16*($Xi/5),"esp"));
+	 }
+	  &paddd	(@X[3],@X[-1&7]);
+	 eval(shift(@insns));		# ror
+	 eval(shift(@insns));
+
+	&pxor	(@X[0],@X[2]);		# "X[0]"^="X[-6]"
+	 eval(shift(@insns));		# body_20_39
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));		# rol
+
+	&movdqa	(@X[2],@X[0]);
+	  &movdqa	(&QWP(0+16*(($Xi-1)&3),"esp"),@X[3]);	# X[]+K xfer to IALU
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));		# ror
+	 eval(shift(@insns));
+
+	&pslld	(@X[0],2);
+	 eval(shift(@insns));		# body_20_39
+	 eval(shift(@insns));
+	&psrld	(@X[2],30);
+	 eval(shift(@insns));
+	 eval(shift(@insns));		# rol
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));		# ror
+	 eval(shift(@insns));
+
+	&por	(@X[0],@X[2]);		# "X[0]"<<<=2
+	 eval(shift(@insns));		# body_20_39
+	 eval(shift(@insns));
+	  &movdqa	(@X[2],&QWP(64+16*(($Xi-6)%3),"esp")) if($Xi<19);	# restore X[] from backtrace buffer
+	 eval(shift(@insns));
+	 eval(shift(@insns));		# rol
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));		# ror
+	  &movdqa	(@X[3],@X[0])	if ($Xi<19);
+	 eval(shift(@insns));
+
+	 foreach (@insns) { eval; }	# remaining instructions
+
+  $Xi++;	push(@X,shift(@X));	# "rotate" X[]
+}
+
+sub Xuplast_ssse3_80()
+{ use integer;
+  my $body = shift;
+  my @insns = (&$body,&$body,&$body,&$body);	# 32 instructions
+  my ($a,$b,$c,$d,$e);
+
+	 eval(shift(@insns));
+	  &paddd	(@X[3],@X[-1&7]);
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+
+	  &movdqa	(&QWP(0+16*(($Xi-1)&3),"esp"),@X[3]);	# X[]+K xfer IALU
+
+	 foreach (@insns) { eval; }		# remaining instructions
+
+	&mov	($inp=@T[1],&DWP(192+4,"esp"));
+	&cmp	($inp,&DWP(192+8,"esp"));
+	&je	(&label("done"));
+
+	&movdqa	(@X[3],&QWP(112+48,"esp"));	# K_00_19
+	&movdqa	(@X[2],&QWP(112+64,"esp"));	# pbswap mask
+	&movdqu	(@X[-4&7],&QWP(0,$inp));	# load input
+	&movdqu	(@X[-3&7],&QWP(16,$inp));
+	&movdqu	(@X[-2&7],&QWP(32,$inp));
+	&movdqu	(@X[-1&7],&QWP(48,$inp));
+	&add	($inp,64);
+	&pshufb	(@X[-4&7],@X[2]);		# byte swap
+	&mov	(&DWP(192+4,"esp"),$inp);
+	&movdqa	(&QWP(112-16,"esp"),@X[3]);	# borrow last backtrace slot
+
+  $Xi=0;
+}
+
+sub Xloop_ssse3()
+{ use integer;
+  my $body = shift;
+  my @insns = (&$body,&$body,&$body,&$body);	# 32 instructions
+  my ($a,$b,$c,$d,$e);
+
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	&pshufb	(@X[($Xi-3)&7],@X[2]);
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	&paddd	(@X[($Xi-4)&7],@X[3]);
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	&movdqa	(&QWP(0+16*$Xi,"esp"),@X[($Xi-4)&7]);	# X[]+K xfer to IALU
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	&psubd	(@X[($Xi-4)&7],@X[3]);
+
+	foreach (@insns) { eval; }
+  $Xi++;
+}
+
+sub Xtail_ssse3()
+{ use integer;
+  my $body = shift;
+  my @insns = (&$body,&$body,&$body,&$body);	# 32 instructions
+  my ($a,$b,$c,$d,$e);
+
+	foreach (@insns) { eval; }
+}
+
+sub body_00_19 () {
+	(
+	'($a,$b,$c,$d,$e)=@V;'.
+	'&add	($e,&DWP(4*($j&15),"esp"));',	# X[]+K xfer
+	'&xor	($c,$d);',
+	'&mov	(@T[1],$a);',	# $b in next round
+	'&$_rol	($a,5);',
+	'&and	(@T[0],$c);',	# ($b&($c^$d))
+	'&xor	($c,$d);',	# restore $c
+	'&xor	(@T[0],$d);',
+	'&add	($e,$a);',
+	'&$_ror	($b,$j?7:2);',	# $b>>>2
+	'&add	($e,@T[0]);'	.'$j++; unshift(@V,pop(@V)); unshift(@T,pop(@T));'
+	);
+}
+
+sub body_20_39 () {
+	(
+	'($a,$b,$c,$d,$e)=@V;'.
+	'&add	($e,&DWP(4*($j++&15),"esp"));',	# X[]+K xfer
+	'&xor	(@T[0],$d);',	# ($b^$d)
+	'&mov	(@T[1],$a);',	# $b in next round
+	'&$_rol	($a,5);',
+	'&xor	(@T[0],$c);',	# ($b^$d^$c)
+	'&add	($e,$a);',
+	'&$_ror	($b,7);',	# $b>>>2
+	'&add	($e,@T[0]);'	.'unshift(@V,pop(@V)); unshift(@T,pop(@T));'
+	);
+}
+
+sub body_40_59 () {
+	(
+	'($a,$b,$c,$d,$e)=@V;'.
+	'&mov	(@T[1],$c);',
+	'&xor	($c,$d);',
+	'&add	($e,&DWP(4*($j++&15),"esp"));',	# X[]+K xfer
+	'&and	(@T[1],$d);',
+	'&and	(@T[0],$c);',	# ($b&($c^$d))
+	'&$_ror	($b,7);',	# $b>>>2
+	'&add	($e,@T[1]);',
+	'&mov	(@T[1],$a);',	# $b in next round
+	'&$_rol	($a,5);',
+	'&add	($e,@T[0]);',
+	'&xor	($c,$d);',	# restore $c
+	'&add	($e,$a);'	.'unshift(@V,pop(@V)); unshift(@T,pop(@T));'
+	);
+}
+
+&set_label("loop",16);
+	&Xupdate_ssse3_16_31(\&body_00_19);
+	&Xupdate_ssse3_16_31(\&body_00_19);
+	&Xupdate_ssse3_16_31(\&body_00_19);
+	&Xupdate_ssse3_16_31(\&body_00_19);
+	&Xupdate_ssse3_32_79(\&body_00_19);
+	&Xupdate_ssse3_32_79(\&body_20_39);
+	&Xupdate_ssse3_32_79(\&body_20_39);
+	&Xupdate_ssse3_32_79(\&body_20_39);
+	&Xupdate_ssse3_32_79(\&body_20_39);
+	&Xupdate_ssse3_32_79(\&body_20_39);
+	&Xupdate_ssse3_32_79(\&body_40_59);
+	&Xupdate_ssse3_32_79(\&body_40_59);
+	&Xupdate_ssse3_32_79(\&body_40_59);
+	&Xupdate_ssse3_32_79(\&body_40_59);
+	&Xupdate_ssse3_32_79(\&body_40_59);
+	&Xupdate_ssse3_32_79(\&body_20_39);
+	&Xuplast_ssse3_80(\&body_20_39);	# can jump to "done"
+
+				$saved_j=$j; @saved_V=@V;
+
+	&Xloop_ssse3(\&body_20_39);
+	&Xloop_ssse3(\&body_20_39);
+	&Xloop_ssse3(\&body_20_39);
+
+	&mov	(@T[1],&DWP(192,"esp"));	# update context
+	&add	($A,&DWP(0,@T[1]));
+	&add	(@T[0],&DWP(4,@T[1]));		# $b
+	&add	($C,&DWP(8,@T[1]));
+	&mov	(&DWP(0,@T[1]),$A);
+	&add	($D,&DWP(12,@T[1]));
+	&mov	(&DWP(4,@T[1]),@T[0]);
+	&add	($E,&DWP(16,@T[1]));
+	&mov	(&DWP(8,@T[1]),$C);
+	&mov	($B,@T[0]);
+	&mov	(&DWP(12,@T[1]),$D);
+	&mov	(&DWP(16,@T[1]),$E);
+	&movdqa	(@X[0],@X[-3&7]);
+
+	&jmp	(&label("loop"));
+
+&set_label("done",16);		$j=$saved_j; @V=@saved_V;
+
+	&Xtail_ssse3(\&body_20_39);
+	&Xtail_ssse3(\&body_20_39);
+	&Xtail_ssse3(\&body_20_39);
+
+	&mov	(@T[1],&DWP(192,"esp"));	# update context
+	&add	($A,&DWP(0,@T[1]));
+	&mov	("esp",&DWP(192+12,"esp"));	# restore %esp
+	&add	(@T[0],&DWP(4,@T[1]));		# $b
+	&add	($C,&DWP(8,@T[1]));
+	&mov	(&DWP(0,@T[1]),$A);
+	&add	($D,&DWP(12,@T[1]));
+	&mov	(&DWP(4,@T[1]),@T[0]);
+	&add	($E,&DWP(16,@T[1]));
+	&mov	(&DWP(8,@T[1]),$C);
+	&mov	(&DWP(12,@T[1]),$D);
+	&mov	(&DWP(16,@T[1]),$E);
+
+&function_end("_sha1_block_data_order_ssse3");
+
+if ($ymm) {
+my $Xi=4;			# 4xSIMD Xupdate round, start pre-seeded
+my @X=map("xmm$_",(4..7,0..3));	# pre-seeded for $Xi=4
+my @V=($A,$B,$C,$D,$E);
+my $j=0;			# hash round
+my @T=($T,$tmp1);
+my $inp;
+
+my $_rol=sub { &shld(@_[0],@_) };
+my $_ror=sub { &shrd(@_[0],@_) };
+
+&function_begin("_sha1_block_data_order_avx");
+	&call	(&label("pic_point"));	# make it PIC!
+	&set_label("pic_point");
+	&blindpop($tmp1);
+	&lea	($tmp1,&DWP(&label("K_XX_XX")."-".&label("pic_point"),$tmp1));
+&set_label("avx_shortcut");
+	&vzeroall();
+
+	&vmovdqa(@X[3],&QWP(0,$tmp1));		# K_00_19
+	&vmovdqa(@X[4],&QWP(16,$tmp1));		# K_20_39
+	&vmovdqa(@X[5],&QWP(32,$tmp1));		# K_40_59
+	&vmovdqa(@X[6],&QWP(48,$tmp1));		# K_60_79
+	&vmovdqa(@X[2],&QWP(64,$tmp1));		# pbswap mask
+
+	&mov	($E,&wparam(0));		# load argument block
+	&mov	($inp=@T[1],&wparam(1));
+	&mov	($D,&wparam(2));
+	&mov	(@T[0],"esp");
+
+	# stack frame layout
+	#
+	# +0	X[0]+K	X[1]+K	X[2]+K	X[3]+K	# XMM->IALU xfer area
+	#	X[4]+K	X[5]+K	X[6]+K	X[7]+K
+	#	X[8]+K	X[9]+K	X[10]+K	X[11]+K
+	#	X[12]+K	X[13]+K	X[14]+K	X[15]+K
+	#
+	# +64	X[0]	X[1]	X[2]	X[3]	# XMM->XMM backtrace area
+	#	X[4]	X[5]	X[6]	X[7]
+	#	X[8]	X[9]	X[10]	X[11]	# even borrowed for K_00_19
+	#
+	# +112	K_20_39	K_20_39	K_20_39	K_20_39	# constants
+	#	K_40_59	K_40_59	K_40_59	K_40_59
+	#	K_60_79	K_60_79	K_60_79	K_60_79
+	#	K_00_19	K_00_19	K_00_19	K_00_19
+	#	pbswap mask
+	#
+	# +192	ctx				# argument block
+	# +196	inp
+	# +200	end
+	# +204	esp
+	&sub	("esp",208);
+	&and	("esp",-64);
+
+	&vmovdqa(&QWP(112+0,"esp"),@X[4]);	# copy constants
+	&vmovdqa(&QWP(112+16,"esp"),@X[5]);
+	&vmovdqa(&QWP(112+32,"esp"),@X[6]);
+	&shl	($D,6);				# len*64
+	&vmovdqa(&QWP(112+48,"esp"),@X[3]);
+	&add	($D,$inp);			# end of input
+	&vmovdqa(&QWP(112+64,"esp"),@X[2]);
+	&add	($inp,64);
+	&mov	(&DWP(192+0,"esp"),$E);		# save argument block
+	&mov	(&DWP(192+4,"esp"),$inp);
+	&mov	(&DWP(192+8,"esp"),$D);
+	&mov	(&DWP(192+12,"esp"),@T[0]);	# save original %esp
+
+	&mov	($A,&DWP(0,$E));		# load context
+	&mov	($B,&DWP(4,$E));
+	&mov	($C,&DWP(8,$E));
+	&mov	($D,&DWP(12,$E));
+	&mov	($E,&DWP(16,$E));
+	&mov	(@T[0],$B);			# magic seed
+
+	&vmovdqu(@X[-4&7],&QWP(-64,$inp));	# load input to %xmm[0-3]
+	&vmovdqu(@X[-3&7],&QWP(-48,$inp));
+	&vmovdqu(@X[-2&7],&QWP(-32,$inp));
+	&vmovdqu(@X[-1&7],&QWP(-16,$inp));
+	&vpshufb(@X[-4&7],@X[-4&7],@X[2]);	# byte swap
+	&vpshufb(@X[-3&7],@X[-3&7],@X[2]);
+	&vpshufb(@X[-2&7],@X[-2&7],@X[2]);
+	&vmovdqa(&QWP(112-16,"esp"),@X[3]);	# borrow last backtrace slot
+	&vpshufb(@X[-1&7],@X[-1&7],@X[2]);
+	&vpaddd	(@X[0],@X[-4&7],@X[3]);		# add K_00_19
+	&vpaddd	(@X[1],@X[-3&7],@X[3]);
+	&vpaddd	(@X[2],@X[-2&7],@X[3]);
+	&vmovdqa(&QWP(0,"esp"),@X[0]);		# X[]+K xfer to IALU
+	&vmovdqa(&QWP(0+16,"esp"),@X[1]);
+	&vmovdqa(&QWP(0+32,"esp"),@X[2]);
+	&jmp	(&label("loop"));
+
+sub Xupdate_avx_16_31()		# recall that $Xi starts wtih 4
+{ use integer;
+  my $body = shift;
+  my @insns = (&$body,&$body,&$body,&$body);	# 40 instructions
+  my ($a,$b,$c,$d,$e);
+
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	&vpalignr(@X[0],@X[-3&7],@X[-4&7],8);	# compose "X[-14]" in "X[0]"
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+
+	  &vpaddd	(@X[3],@X[3],@X[-1&7]);
+	  &vmovdqa	(&QWP(64+16*(($Xi-4)%3),"esp"),@X[-4&7]);# save X[] to backtrace buffer
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	&vpsrldq(@X[2],@X[-1&7],4);		# "X[-3]", 3 dwords
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	&vpxor	(@X[0],@X[0],@X[-4&7]);		# "X[0]"^="X[-16]"
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+
+	&vpxor	(@X[2],@X[2],@X[-2&7]);		# "X[-3]"^"X[-8]"
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	  &vmovdqa	(&QWP(0+16*(($Xi-1)&3),"esp"),@X[3]);	# X[]+K xfer to IALU
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+
+	&vpxor	(@X[0],@X[0],@X[2]);		# "X[0]"^="X[-3]"^"X[-8]"
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+
+	&vpsrld	(@X[2],@X[0],31);
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+
+	&vpslldq(@X[4],@X[0],12);		# "X[0]"<<96, extract one dword
+	&vpaddd	(@X[0],@X[0],@X[0]);
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+
+	&vpsrld	(@X[3],@X[4],30);
+	&vpor	(@X[0],@X[0],@X[2]);		# "X[0]"<<<=1
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+
+	&vpslld	(@X[4],@X[4],2);
+	  &vmovdqa	(@X[2],&QWP(64+16*(($Xi-6)%3),"esp")) if ($Xi>5);	# restore X[] from backtrace buffer
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	&vpxor	(@X[0],@X[0],@X[3]);
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+
+	&vpxor	(@X[0],@X[0],@X[4]);		# "X[0]"^=("X[0]"<<96)<<<2
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	  &vmovdqa	(@X[4],&QWP(112-16+16*(($Xi)/5),"esp"));	# K_XX_XX
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+
+	 foreach (@insns) { eval; }	# remaining instructions [if any]
+
+  $Xi++;	push(@X,shift(@X));	# "rotate" X[]
+}
+
+sub Xupdate_avx_32_79()
+{ use integer;
+  my $body = shift;
+  my @insns = (&$body,&$body,&$body,&$body);	# 32 to 48 instructions
+  my ($a,$b,$c,$d,$e);
+
+	&vpalignr(@X[2],@X[-1&7],@X[-2&7],8);	# compose "X[-6]"
+	&vpxor	(@X[0],@X[0],@X[-4&7]);	# "X[0]"="X[-32]"^"X[-16]"
+	 eval(shift(@insns));		# body_20_39
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));		# rol
+
+	&vpxor	(@X[0],@X[0],@X[-7&7]);	# "X[0]"^="X[-28]"
+	  &vmovdqa	(&QWP(64+16*(($Xi-4)%3),"esp"),@X[-4&7]);	# save X[] to backtrace buffer
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 if ($Xi%5) {
+	  &vmovdqa	(@X[4],@X[3]);	# "perpetuate" K_XX_XX...
+	 } else {			# ... or load next one
+	  &vmovdqa	(@X[4],&QWP(112-16+16*($Xi/5),"esp"));
+	 }
+	  &vpaddd	(@X[3],@X[3],@X[-1&7]);
+	 eval(shift(@insns));		# ror
+	 eval(shift(@insns));
+
+	&vpxor	(@X[0],@X[0],@X[2]);		# "X[0]"^="X[-6]"
+	 eval(shift(@insns));		# body_20_39
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));		# rol
+
+	&vpsrld	(@X[2],@X[0],30);
+	  &vmovdqa	(&QWP(0+16*(($Xi-1)&3),"esp"),@X[3]);	# X[]+K xfer to IALU
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));		# ror
+	 eval(shift(@insns));
+
+	&vpslld	(@X[0],@X[0],2);
+	 eval(shift(@insns));		# body_20_39
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));		# rol
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));		# ror
+	 eval(shift(@insns));
+
+	&vpor	(@X[0],@X[0],@X[2]);	# "X[0]"<<<=2
+	 eval(shift(@insns));		# body_20_39
+	 eval(shift(@insns));
+	  &vmovdqa	(@X[2],&QWP(64+16*(($Xi-6)%3),"esp")) if($Xi<19);	# restore X[] from backtrace buffer
+	 eval(shift(@insns));
+	 eval(shift(@insns));		# rol
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));		# ror
+	 eval(shift(@insns));
+
+	 foreach (@insns) { eval; }	# remaining instructions
+
+  $Xi++;	push(@X,shift(@X));	# "rotate" X[]
+}
+
+sub Xuplast_avx_80()
+{ use integer;
+  my $body = shift;
+  my @insns = (&$body,&$body,&$body,&$body);	# 32 instructions
+  my ($a,$b,$c,$d,$e);
+
+	 eval(shift(@insns));
+	  &vpaddd	(@X[3],@X[3],@X[-1&7]);
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+
+	  &vmovdqa	(&QWP(0+16*(($Xi-1)&3),"esp"),@X[3]);	# X[]+K xfer IALU
+
+	 foreach (@insns) { eval; }		# remaining instructions
+
+	&mov	($inp=@T[1],&DWP(192+4,"esp"));
+	&cmp	($inp,&DWP(192+8,"esp"));
+	&je	(&label("done"));
+
+	&vmovdqa(@X[3],&QWP(112+48,"esp"));	# K_00_19
+	&vmovdqa(@X[2],&QWP(112+64,"esp"));	# pbswap mask
+	&vmovdqu(@X[-4&7],&QWP(0,$inp));	# load input
+	&vmovdqu(@X[-3&7],&QWP(16,$inp));
+	&vmovdqu(@X[-2&7],&QWP(32,$inp));
+	&vmovdqu(@X[-1&7],&QWP(48,$inp));
+	&add	($inp,64);
+	&vpshufb(@X[-4&7],@X[-4&7],@X[2]);		# byte swap
+	&mov	(&DWP(192+4,"esp"),$inp);
+	&vmovdqa(&QWP(112-16,"esp"),@X[3]);	# borrow last backtrace slot
+
+  $Xi=0;
+}
+
+sub Xloop_avx()
+{ use integer;
+  my $body = shift;
+  my @insns = (&$body,&$body,&$body,&$body);	# 32 instructions
+  my ($a,$b,$c,$d,$e);
+
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	&vpshufb	(@X[($Xi-3)&7],@X[($Xi-3)&7],@X[2]);
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	&vpaddd	(@X[$Xi&7],@X[($Xi-4)&7],@X[3]);
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+	&vmovdqa	(&QWP(0+16*$Xi,"esp"),@X[$Xi&7]);	# X[]+K xfer to IALU
+	 eval(shift(@insns));
+	 eval(shift(@insns));
+
+	foreach (@insns) { eval; }
+  $Xi++;
+}
+
+sub Xtail_avx()
+{ use integer;
+  my $body = shift;
+  my @insns = (&$body,&$body,&$body,&$body);	# 32 instructions
+  my ($a,$b,$c,$d,$e);
+
+	foreach (@insns) { eval; }
+}
+
+&set_label("loop",16);
+	&Xupdate_avx_16_31(\&body_00_19);
+	&Xupdate_avx_16_31(\&body_00_19);
+	&Xupdate_avx_16_31(\&body_00_19);
+	&Xupdate_avx_16_31(\&body_00_19);
+	&Xupdate_avx_32_79(\&body_00_19);
+	&Xupdate_avx_32_79(\&body_20_39);
+	&Xupdate_avx_32_79(\&body_20_39);
+	&Xupdate_avx_32_79(\&body_20_39);
+	&Xupdate_avx_32_79(\&body_20_39);
+	&Xupdate_avx_32_79(\&body_20_39);
+	&Xupdate_avx_32_79(\&body_40_59);
+	&Xupdate_avx_32_79(\&body_40_59);
+	&Xupdate_avx_32_79(\&body_40_59);
+	&Xupdate_avx_32_79(\&body_40_59);
+	&Xupdate_avx_32_79(\&body_40_59);
+	&Xupdate_avx_32_79(\&body_20_39);
+	&Xuplast_avx_80(\&body_20_39);	# can jump to "done"
+
+				$saved_j=$j; @saved_V=@V;
+
+	&Xloop_avx(\&body_20_39);
+	&Xloop_avx(\&body_20_39);
+	&Xloop_avx(\&body_20_39);
+
+	&mov	(@T[1],&DWP(192,"esp"));	# update context
+	&add	($A,&DWP(0,@T[1]));
+	&add	(@T[0],&DWP(4,@T[1]));		# $b
+	&add	($C,&DWP(8,@T[1]));
+	&mov	(&DWP(0,@T[1]),$A);
+	&add	($D,&DWP(12,@T[1]));
+	&mov	(&DWP(4,@T[1]),@T[0]);
+	&add	($E,&DWP(16,@T[1]));
+	&mov	(&DWP(8,@T[1]),$C);
+	&mov	($B,@T[0]);
+	&mov	(&DWP(12,@T[1]),$D);
+	&mov	(&DWP(16,@T[1]),$E);
+
+	&jmp	(&label("loop"));
+
+&set_label("done",16);		$j=$saved_j; @V=@saved_V;
+
+	&Xtail_avx(\&body_20_39);
+	&Xtail_avx(\&body_20_39);
+	&Xtail_avx(\&body_20_39);
+
+	&vzeroall();
+
+	&mov	(@T[1],&DWP(192,"esp"));	# update context
+	&add	($A,&DWP(0,@T[1]));
+	&mov	("esp",&DWP(192+12,"esp"));	# restore %esp
+	&add	(@T[0],&DWP(4,@T[1]));		# $b
+	&add	($C,&DWP(8,@T[1]));
+	&mov	(&DWP(0,@T[1]),$A);
+	&add	($D,&DWP(12,@T[1]));
+	&mov	(&DWP(4,@T[1]),@T[0]);
+	&add	($E,&DWP(16,@T[1]));
+	&mov	(&DWP(8,@T[1]),$C);
+	&mov	(&DWP(12,@T[1]),$D);
+	&mov	(&DWP(16,@T[1]),$E);
+&function_end("_sha1_block_data_order_avx");
+}
+&set_label("K_XX_XX",64);
+&data_word(0x5a827999,0x5a827999,0x5a827999,0x5a827999);	# K_00_19
+&data_word(0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1);	# K_20_39
+&data_word(0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc);	# K_40_59
+&data_word(0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6);	# K_60_79
+&data_word(0x00010203,0x04050607,0x08090a0b,0x0c0d0e0f);	# pbswap mask
+}
 &asciz("SHA1 block transform for x86, CRYPTOGAMS by <appro\@openssl.org>");
 
 &asm_finish();