crypto/fipsmodule/sha/asm/sha1-armv8.pl - boringssl - Git at Google

 #! /usr/bin/env perl
 # Copyright 2014-2016 The OpenSSL Project Authors. All Rights Reserved.
 #
 # Licensed under the OpenSSL license (the "License").  You may not use
 # this file except in compliance with the License.  You can obtain a copy
 # in the file LICENSE in the source distribution or at
 # https://www.openssl.org/source/license.html

 #
 # ====================================================================
 # 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/.
 # ====================================================================
 #
 # SHA1 for ARMv8.
 #
 # Performance in cycles per processed byte and improvement coefficient
 # over code generated with "default" compiler:
 #
 #		hardware-assisted	software(*)
 # Apple A7	2.31			4.13 (+14%)
 # Cortex-A53	2.24			8.03 (+97%)
 # Cortex-A57	2.35			7.88 (+74%)
 # Denver	2.13			3.97 (+0%)(**)
 # X-Gene				8.80 (+200%)
 # Mongoose	2.05			6.50 (+160%)
 # Kryo		1.88			8.00 (+90%)
 #
 # (*)	Software results are presented mostly for reference purposes.
 # (**)	Keep in mind that Denver relies on binary translation, which
 #	optimizes compiler output at run-time.

 $flavour = shift;
 $output  = shift;

 $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
 ( $xlate="${dir}arm-xlate.pl" and -f $xlate ) or
 ( $xlate="${dir}../../../perlasm/arm-xlate.pl" and -f $xlate) or
 die "can't locate arm-xlate.pl";

 open OUT,"| \"$^X\" $xlate $flavour $output";
 *STDOUT=*OUT;

 ($ctx,$inp,$num)=("x0","x1","x2");
 @Xw=map("w$_",(3..17,19));
 @Xx=map("x$_",(3..17,19));
 @V=($A,$B,$C,$D,$E)=map("w$_",(20..24));
 ($t0,$t1,$t2,$K)=map("w$_",(25..28));


 sub BODY_00_19 {
 my ($i,$a,$b,$c,$d,$e)=@_;
 my $j=($i+2)&15;

 $code.=<<___ if ($i<15 && !($i&1));
 	lsr	@Xx[$i+1],@Xx[$i],#32
 ___
 $code.=<<___ if ($i<14 && !($i&1));
 	ldr	@Xx[$i+2],[$inp,#`($i+2)*4-64`]
 ___
 $code.=<<___ if ($i<14 && ($i&1));
 #ifdef	__ARMEB__
 	ror	@Xx[$i+1],@Xx[$i+1],#32
 #else
 	rev32	@Xx[$i+1],@Xx[$i+1]
 #endif
 ___
 $code.=<<___ if ($i<14);
 	bic	$t0,$d,$b
 	and	$t1,$c,$b
 	ror	$t2,$a,#27
 	add	$d,$d,$K		// future e+=K
 	orr	$t0,$t0,$t1
 	add	$e,$e,$t2		// e+=rot(a,5)
 	ror	$b,$b,#2
 	add	$d,$d,@Xw[($i+1)&15]	// future e+=X[i]
 	add	$e,$e,$t0		// e+=F(b,c,d)
 ___
 $code.=<<___ if ($i==19);
 	movz	$K,#0xeba1
 	movk	$K,#0x6ed9,lsl#16
 ___
 $code.=<<___ if ($i>=14);
 	 eor	@Xw[$j],@Xw[$j],@Xw[($j+2)&15]
 	bic	$t0,$d,$b
 	and	$t1,$c,$b
 	ror	$t2,$a,#27
 	 eor	@Xw[$j],@Xw[$j],@Xw[($j+8)&15]
 	add	$d,$d,$K		// future e+=K
 	orr	$t0,$t0,$t1
 	add	$e,$e,$t2		// e+=rot(a,5)
 	 eor	@Xw[$j],@Xw[$j],@Xw[($j+13)&15]
 	ror	$b,$b,#2
 	add	$d,$d,@Xw[($i+1)&15]	// future e+=X[i]
 	add	$e,$e,$t0		// e+=F(b,c,d)
 	 ror	@Xw[$j],@Xw[$j],#31
 ___
 }

 sub BODY_40_59 {
 my ($i,$a,$b,$c,$d,$e)=@_;
 my $j=($i+2)&15;

 $code.=<<___ if ($i==59);
 	movz	$K,#0xc1d6
 	movk	$K,#0xca62,lsl#16
 ___
 $code.=<<___;
 	orr	$t0,$b,$c
 	and	$t1,$b,$c
 	 eor	@Xw[$j],@Xw[$j],@Xw[($j+2)&15]
 	ror	$t2,$a,#27
 	and	$t0,$t0,$d
 	add	$d,$d,$K		// future e+=K
 	 eor	@Xw[$j],@Xw[$j],@Xw[($j+8)&15]
 	add	$e,$e,$t2		// e+=rot(a,5)
 	orr	$t0,$t0,$t1
 	ror	$b,$b,#2
 	 eor	@Xw[$j],@Xw[$j],@Xw[($j+13)&15]
 	add	$d,$d,@Xw[($i+1)&15]	// future e+=X[i]
 	add	$e,$e,$t0		// e+=F(b,c,d)
 	 ror	@Xw[$j],@Xw[$j],#31
 ___
 }

 sub BODY_20_39 {
 my ($i,$a,$b,$c,$d,$e)=@_;
 my $j=($i+2)&15;

 $code.=<<___ if ($i==39);
 	movz	$K,#0xbcdc
 	movk	$K,#0x8f1b,lsl#16
 ___
 $code.=<<___ if ($i<78);
 	 eor	@Xw[$j],@Xw[$j],@Xw[($j+2)&15]
 	eor	$t0,$d,$b
 	ror	$t2,$a,#27
 	add	$d,$d,$K		// future e+=K
 	 eor	@Xw[$j],@Xw[$j],@Xw[($j+8)&15]
 	eor	$t0,$t0,$c
 	add	$e,$e,$t2		// e+=rot(a,5)
 	ror	$b,$b,#2
 	 eor	@Xw[$j],@Xw[$j],@Xw[($j+13)&15]
 	add	$d,$d,@Xw[($i+1)&15]	// future e+=X[i]
 	add	$e,$e,$t0		// e+=F(b,c,d)
 	 ror	@Xw[$j],@Xw[$j],#31
 ___
 $code.=<<___ if ($i==78);
 	ldp	@Xw[1],@Xw[2],[$ctx]
 	eor	$t0,$d,$b
 	ror	$t2,$a,#27
 	add	$d,$d,$K		// future e+=K
 	eor	$t0,$t0,$c
 	add	$e,$e,$t2		// e+=rot(a,5)
 	ror	$b,$b,#2
 	add	$d,$d,@Xw[($i+1)&15]	// future e+=X[i]
 	add	$e,$e,$t0		// e+=F(b,c,d)
 ___
 $code.=<<___ if ($i==79);
 	ldp	@Xw[3],@Xw[4],[$ctx,#8]
 	eor	$t0,$d,$b
 	ror	$t2,$a,#27
 	eor	$t0,$t0,$c
 	add	$e,$e,$t2		// e+=rot(a,5)
 	ror	$b,$b,#2
 	ldr	@Xw[5],[$ctx,#16]
 	add	$e,$e,$t0		// e+=F(b,c,d)
 ___
 }

 $code.=<<___;
 #include <openssl/arm_arch.h>

 .text

 .extern	OPENSSL_armcap_P
 .hidden OPENSSL_armcap_P
 .globl	sha1_block_data_order
 .type	sha1_block_data_order,%function
 .align	6
 sha1_block_data_order:
 	// Armv8.3-A PAuth: even though x30 is pushed to stack it is not popped later.
 	AARCH64_VALID_CALL_TARGET
 #if __has_feature(hwaddress_sanitizer) && __clang_major__ >= 10
 	adrp	x16,:pg_hi21_nc:OPENSSL_armcap_P
 #else
 	adrp	x16,:pg_hi21:OPENSSL_armcap_P
 #endif
 	ldr	w16,[x16,:lo12:OPENSSL_armcap_P]
 	tst	w16,#ARMV8_SHA1
 	b.ne	.Lv8_entry

 	stp	x29,x30,[sp,#-96]!
 	add	x29,sp,#0
 	stp	x19,x20,[sp,#16]
 	stp	x21,x22,[sp,#32]
 	stp	x23,x24,[sp,#48]
 	stp	x25,x26,[sp,#64]
 	stp	x27,x28,[sp,#80]

 	ldp	$A,$B,[$ctx]
 	ldp	$C,$D,[$ctx,#8]
 	ldr	$E,[$ctx,#16]

 .Loop:
 	ldr	@Xx[0],[$inp],#64
 	movz	$K,#0x7999
 	sub	$num,$num,#1
 	movk	$K,#0x5a82,lsl#16
 #ifdef	__ARMEB__
 	ror	$Xx[0],@Xx[0],#32
 #else
 	rev32	@Xx[0],@Xx[0]
 #endif
 	add	$E,$E,$K		// warm it up
 	add	$E,$E,@Xw[0]
 ___
 for($i=0;$i<20;$i++)	{ &BODY_00_19($i,@V); unshift(@V,pop(@V)); }
 for(;$i<40;$i++)	{ &BODY_20_39($i,@V); unshift(@V,pop(@V)); }
 for(;$i<60;$i++)	{ &BODY_40_59($i,@V); unshift(@V,pop(@V)); }
 for(;$i<80;$i++)	{ &BODY_20_39($i,@V); unshift(@V,pop(@V)); }
 $code.=<<___;
 	add	$B,$B,@Xw[2]
 	add	$C,$C,@Xw[3]
 	add	$A,$A,@Xw[1]
 	add	$D,$D,@Xw[4]
 	add	$E,$E,@Xw[5]
 	stp	$A,$B,[$ctx]
 	stp	$C,$D,[$ctx,#8]
 	str	$E,[$ctx,#16]
 	cbnz	$num,.Loop

 	ldp	x19,x20,[sp,#16]
 	ldp	x21,x22,[sp,#32]
 	ldp	x23,x24,[sp,#48]
 	ldp	x25,x26,[sp,#64]
 	ldp	x27,x28,[sp,#80]
 	ldr	x29,[sp],#96
 	ret
 .size	sha1_block_data_order,.-sha1_block_data_order
 ___
 {{{
 my ($ABCD,$E,$E0,$E1)=map("v$_.16b",(0..3));
 my @MSG=map("v$_.16b",(4..7));
 my @Kxx=map("v$_.4s",(16..19));
 my ($W0,$W1)=("v20.4s","v21.4s");
 my $ABCD_SAVE="v22.16b";

 $code.=<<___;
 .type	sha1_block_armv8,%function
 .align	6
 sha1_block_armv8:
 	// Armv8.3-A PAuth: even though x30 is pushed to stack it is not popped later.
 	AARCH64_VALID_CALL_TARGET
 .Lv8_entry:
 	stp	x29,x30,[sp,#-16]!
 	add	x29,sp,#0

 	adrp	x4,:pg_hi21:.Lconst
 	add	x4,x4,:lo12:.Lconst
 	eor	$E,$E,$E
 	ld1.32	{$ABCD},[$ctx],#16
 	ld1.32	{$E}[0],[$ctx]
 	sub	$ctx,$ctx,#16
 	ld1.32	{@Kxx[0]-@Kxx[3]},[x4]

 .Loop_hw:
 	ld1	{@MSG[0]-@MSG[3]},[$inp],#64
 	sub	$num,$num,#1
 	rev32	@MSG[0],@MSG[0]
 	rev32	@MSG[1],@MSG[1]

 	add.i32	$W0,@Kxx[0],@MSG[0]
 	rev32	@MSG[2],@MSG[2]
 	orr	$ABCD_SAVE,$ABCD,$ABCD	// offload

 	add.i32	$W1,@Kxx[0],@MSG[1]
 	rev32	@MSG[3],@MSG[3]
 	sha1h	$E1,$ABCD
 	sha1c	$ABCD,$E,$W0		// 0
 	add.i32	$W0,@Kxx[$j],@MSG[2]
 	sha1su0	@MSG[0],@MSG[1],@MSG[2]
 ___
 for ($j=0,$i=1;$i<20-3;$i++) {
 my $f=("c","p","m","p")[$i/5];
 $code.=<<___;
 	sha1h	$E0,$ABCD		// $i
 	sha1$f	$ABCD,$E1,$W1
 	add.i32	$W1,@Kxx[$j],@MSG[3]
 	sha1su1	@MSG[0],@MSG[3]
 ___
 $code.=<<___ if ($i<20-4);
 	sha1su0	@MSG[1],@MSG[2],@MSG[3]
 ___
 	($E0,$E1)=($E1,$E0);		($W0,$W1)=($W1,$W0);
 	push(@MSG,shift(@MSG));		$j++ if ((($i+3)%5)==0);
 }
 $code.=<<___;
 	sha1h	$E0,$ABCD		// $i
 	sha1p	$ABCD,$E1,$W1
 	add.i32	$W1,@Kxx[$j],@MSG[3]

 	sha1h	$E1,$ABCD		// 18
 	sha1p	$ABCD,$E0,$W0

 	sha1h	$E0,$ABCD		// 19
 	sha1p	$ABCD,$E1,$W1

 	add.i32	$E,$E,$E0
 	add.i32	$ABCD,$ABCD,$ABCD_SAVE

 	cbnz	$num,.Loop_hw

 	st1.32	{$ABCD},[$ctx],#16
 	st1.32	{$E}[0],[$ctx]

 	ldr	x29,[sp],#16
 	ret
 .size	sha1_block_armv8,.-sha1_block_armv8
 .section .rodata
 .align	6
 .Lconst:
 .long	0x5a827999,0x5a827999,0x5a827999,0x5a827999	//K_00_19
 .long	0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1	//K_20_39
 .long	0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc	//K_40_59
 .long	0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6	//K_60_79
 .asciz	"SHA1 block transform for ARMv8, CRYPTOGAMS by <appro\@openssl.org>"
 .align	2
 ___
 }}}

 {   my	%opcode = (
 	"sha1c"		=> 0x5e000000,	"sha1p"		=> 0x5e001000,
 	"sha1m"		=> 0x5e002000,	"sha1su0"	=> 0x5e003000,
 	"sha1h"		=> 0x5e280800,	"sha1su1"	=> 0x5e281800	);

     sub unsha1 {
 	my ($mnemonic,$arg)=@_;

 	$arg =~ m/[qv]([0-9]+)[^,]*,\s*[qv]([0-9]+)[^,]*(?:,\s*[qv]([0-9]+))?/o
 	&&
 	sprintf ".inst\t0x%08x\t//%s %s",
 			$opcode{$mnemonic}|$1|($2<<5)|($3<<16),
 			$mnemonic,$arg;
     }
 }

 foreach(split("\n",$code)) {

 	s/\`([^\`]*)\`/eval($1)/geo;

 	s/\b(sha1\w+)\s+([qv].*)/unsha1($1,$2)/geo;

 	s/\.\w?32\b//o		and s/\.16b/\.4s/go;
 	m/(ld|st)1[^\[]+\[0\]/o	and s/\.4s/\.s/go;

 	print $_,"\n";
 }

 close STDOUT or die "error closing STDOUT";
	#! /usr/bin/env perl
	# Copyright 2014-2016 The OpenSSL Project Authors. All Rights Reserved.
	#
	# Licensed under the OpenSSL license (the "License"). You may not use
	# this file except in compliance with the License. You can obtain a copy
	# in the file LICENSE in the source distribution or at
	# https://www.openssl.org/source/license.html

	#
	# ====================================================================
	# 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/.
	# ====================================================================
	#
	# SHA1 for ARMv8.
	#
	# Performance in cycles per processed byte and improvement coefficient
	# over code generated with "default" compiler:
	#
	# hardware-assisted software(*)
	# Apple A7 2.31 4.13 (+14%)
	# Cortex-A53 2.24 8.03 (+97%)
	# Cortex-A57 2.35 7.88 (+74%)
	# Denver 2.13 3.97 (+0%)(**)
	# X-Gene 8.80 (+200%)
	# Mongoose 2.05 6.50 (+160%)
	# Kryo 1.88 8.00 (+90%)
	#
	# (*) Software results are presented mostly for reference purposes.
	# (**) Keep in mind that Denver relies on binary translation, which
	# optimizes compiler output at run-time.

	$flavour = shift;
	$output = shift;

	$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
	( $xlate="${dir}arm-xlate.pl" and -f $xlate ) or
	( $xlate="${dir}../../../perlasm/arm-xlate.pl" and -f $xlate) or
	die "can't locate arm-xlate.pl";

	open OUT,"\| \"$^X\" $xlate $flavour $output";
	STDOUT=OUT;

	($ctx,$inp,$num)=("x0","x1","x2");
	@Xw=map("w$_",(3..17,19));
	@Xx=map("x$_",(3..17,19));
	@V=($A,$B,$C,$D,$E)=map("w$_",(20..24));
	($t0,$t1,$t2,$K)=map("w$_",(25..28));


	sub BODY_00_19 {
	my ($i,$a,$b,$c,$d,$e)=@_;
	my $j=($i+2)&15;

	$code.=<<___ if ($i<15 && !($i&1));
	lsr @Xx[$i+1],@Xx[$i],#32
	___
	$code.=<<___ if ($i<14 && !($i&1));
	ldr @Xx[$i+2],[$inp,#`($i+2)*4-64`]
	___
	$code.=<<___ if ($i<14 && ($i&1));
	#ifdef __ARMEB__
	ror @Xx[$i+1],@Xx[$i+1],#32
	#else
	rev32 @Xx[$i+1],@Xx[$i+1]
	#endif
	___
	$code.=<<___ if ($i<14);
	bic $t0,$d,$b
	and $t1,$c,$b
	ror $t2,$a,#27
	add $d,$d,$K // future e+=K
	orr $t0,$t0,$t1
	add $e,$e,$t2 // e+=rot(a,5)
	ror $b,$b,#2
	add $d,$d,@Xw[($i+1)&15] // future e+=X[i]
	add $e,$e,$t0 // e+=F(b,c,d)
	___
	$code.=<<___ if ($i==19);
	movz $K,#0xeba1
	movk $K,#0x6ed9,lsl#16
	___
	$code.=<<___ if ($i>=14);
	eor @Xw[$j],@Xw[$j],@Xw[($j+2)&15]
	bic $t0,$d,$b
	and $t1,$c,$b
	ror $t2,$a,#27
	eor @Xw[$j],@Xw[$j],@Xw[($j+8)&15]
	add $d,$d,$K // future e+=K
	orr $t0,$t0,$t1
	add $e,$e,$t2 // e+=rot(a,5)
	eor @Xw[$j],@Xw[$j],@Xw[($j+13)&15]
	ror $b,$b,#2
	add $d,$d,@Xw[($i+1)&15] // future e+=X[i]
	add $e,$e,$t0 // e+=F(b,c,d)
	ror @Xw[$j],@Xw[$j],#31
	___
	}

	sub BODY_40_59 {
	my ($i,$a,$b,$c,$d,$e)=@_;
	my $j=($i+2)&15;

	$code.=<<___ if ($i==59);
	movz $K,#0xc1d6
	movk $K,#0xca62,lsl#16
	___
	$code.=<<___;
	orr $t0,$b,$c
	and $t1,$b,$c
	eor @Xw[$j],@Xw[$j],@Xw[($j+2)&15]
	ror $t2,$a,#27
	and $t0,$t0,$d
	add $d,$d,$K // future e+=K
	eor @Xw[$j],@Xw[$j],@Xw[($j+8)&15]
	add $e,$e,$t2 // e+=rot(a,5)
	orr $t0,$t0,$t1
	ror $b,$b,#2
	eor @Xw[$j],@Xw[$j],@Xw[($j+13)&15]
	add $d,$d,@Xw[($i+1)&15] // future e+=X[i]
	add $e,$e,$t0 // e+=F(b,c,d)
	ror @Xw[$j],@Xw[$j],#31
	___
	}

	sub BODY_20_39 {
	my ($i,$a,$b,$c,$d,$e)=@_;
	my $j=($i+2)&15;

	$code.=<<___ if ($i==39);
	movz $K,#0xbcdc
	movk $K,#0x8f1b,lsl#16
	___
	$code.=<<___ if ($i<78);
	eor @Xw[$j],@Xw[$j],@Xw[($j+2)&15]
	eor $t0,$d,$b
	ror $t2,$a,#27
	add $d,$d,$K // future e+=K
	eor @Xw[$j],@Xw[$j],@Xw[($j+8)&15]
	eor $t0,$t0,$c
	add $e,$e,$t2 // e+=rot(a,5)
	ror $b,$b,#2
	eor @Xw[$j],@Xw[$j],@Xw[($j+13)&15]
	add $d,$d,@Xw[($i+1)&15] // future e+=X[i]
	add $e,$e,$t0 // e+=F(b,c,d)
	ror @Xw[$j],@Xw[$j],#31
	___
	$code.=<<___ if ($i==78);
	ldp @Xw[1],@Xw[2],[$ctx]
	eor $t0,$d,$b
	ror $t2,$a,#27
	add $d,$d,$K // future e+=K
	eor $t0,$t0,$c
	add $e,$e,$t2 // e+=rot(a,5)
	ror $b,$b,#2
	add $d,$d,@Xw[($i+1)&15] // future e+=X[i]
	add $e,$e,$t0 // e+=F(b,c,d)
	___
	$code.=<<___ if ($i==79);
	ldp @Xw[3],@Xw[4],[$ctx,#8]
	eor $t0,$d,$b
	ror $t2,$a,#27
	eor $t0,$t0,$c
	add $e,$e,$t2 // e+=rot(a,5)
	ror $b,$b,#2
	ldr @Xw[5],[$ctx,#16]
	add $e,$e,$t0 // e+=F(b,c,d)
	___
	}

	$code.=<<___;
	#include <openssl/arm_arch.h>

	.text

	.extern OPENSSL_armcap_P
	.hidden OPENSSL_armcap_P
	.globl sha1_block_data_order
	.type sha1_block_data_order,%function
	.align 6
	sha1_block_data_order:
	// Armv8.3-A PAuth: even though x30 is pushed to stack it is not popped later.
	AARCH64_VALID_CALL_TARGET
	#if __has_feature(hwaddress_sanitizer) && __clang_major__ >= 10
	adrp x16,:pg_hi21_nc:OPENSSL_armcap_P
	#else
	adrp x16,:pg_hi21:OPENSSL_armcap_P
	#endif
	ldr w16,[x16,:lo12:OPENSSL_armcap_P]
	tst w16,#ARMV8_SHA1
	b.ne .Lv8_entry

	stp x29,x30,[sp,#-96]!
	add x29,sp,#0
	stp x19,x20,[sp,#16]
	stp x21,x22,[sp,#32]
	stp x23,x24,[sp,#48]
	stp x25,x26,[sp,#64]
	stp x27,x28,[sp,#80]

	ldp $A,$B,[$ctx]
	ldp $C,$D,[$ctx,#8]
	ldr $E,[$ctx,#16]

	.Loop:
	ldr @Xx[0],[$inp],#64
	movz $K,#0x7999
	sub $num,$num,#1
	movk $K,#0x5a82,lsl#16
	#ifdef __ARMEB__
	ror $Xx[0],@Xx[0],#32
	#else
	rev32 @Xx[0],@Xx[0]
	#endif
	add $E,$E,$K // warm it up
	add $E,$E,@Xw[0]
	___
	for($i=0;$i<20;$i++) { &BODY_00_19($i,@V); unshift(@V,pop(@V)); }
	for(;$i<40;$i++) { &BODY_20_39($i,@V); unshift(@V,pop(@V)); }
	for(;$i<60;$i++) { &BODY_40_59($i,@V); unshift(@V,pop(@V)); }
	for(;$i<80;$i++) { &BODY_20_39($i,@V); unshift(@V,pop(@V)); }
	$code.=<<___;
	add $B,$B,@Xw[2]
	add $C,$C,@Xw[3]
	add $A,$A,@Xw[1]
	add $D,$D,@Xw[4]
	add $E,$E,@Xw[5]
	stp $A,$B,[$ctx]
	stp $C,$D,[$ctx,#8]
	str $E,[$ctx,#16]
	cbnz $num,.Loop

	ldp x19,x20,[sp,#16]
	ldp x21,x22,[sp,#32]
	ldp x23,x24,[sp,#48]
	ldp x25,x26,[sp,#64]
	ldp x27,x28,[sp,#80]
	ldr x29,[sp],#96
	ret
	.size sha1_block_data_order,.-sha1_block_data_order
	___
	{{{
	my ($ABCD,$E,$E0,$E1)=map("v$_.16b",(0..3));
	my @MSG=map("v$_.16b",(4..7));
	my @Kxx=map("v$_.4s",(16..19));
	my ($W0,$W1)=("v20.4s","v21.4s");
	my $ABCD_SAVE="v22.16b";

	$code.=<<___;
	.type sha1_block_armv8,%function
	.align 6
	sha1_block_armv8:
	// Armv8.3-A PAuth: even though x30 is pushed to stack it is not popped later.
	AARCH64_VALID_CALL_TARGET
	.Lv8_entry:
	stp x29,x30,[sp,#-16]!
	add x29,sp,#0

	adrp x4,:pg_hi21:.Lconst
	add x4,x4,:lo12:.Lconst
	eor $E,$E,$E
	ld1.32 {$ABCD},[$ctx],#16
	ld1.32 {$E}[0],[$ctx]
	sub $ctx,$ctx,#16
	ld1.32 {@Kxx[0]-@Kxx[3]},[x4]

	.Loop_hw:
	ld1 {@MSG[0]-@MSG[3]},[$inp],#64
	sub $num,$num,#1
	rev32 @MSG[0],@MSG[0]
	rev32 @MSG[1],@MSG[1]

	add.i32 $W0,@Kxx[0],@MSG[0]
	rev32 @MSG[2],@MSG[2]
	orr $ABCD_SAVE,$ABCD,$ABCD // offload

	add.i32 $W1,@Kxx[0],@MSG[1]
	rev32 @MSG[3],@MSG[3]
	sha1h $E1,$ABCD
	sha1c $ABCD,$E,$W0 // 0
	add.i32 $W0,@Kxx[$j],@MSG[2]
	sha1su0 @MSG[0],@MSG[1],@MSG[2]
	___
	for ($j=0,$i=1;$i<20-3;$i++) {
	my $f=("c","p","m","p")[$i/5];
	$code.=<<___;
	sha1h $E0,$ABCD // $i
	sha1$f $ABCD,$E1,$W1
	add.i32 $W1,@Kxx[$j],@MSG[3]
	sha1su1 @MSG[0],@MSG[3]
	___
	$code.=<<___ if ($i<20-4);
	sha1su0 @MSG[1],@MSG[2],@MSG[3]
	___
	($E0,$E1)=($E1,$E0); ($W0,$W1)=($W1,$W0);
	push(@MSG,shift(@MSG)); $j++ if ((($i+3)%5)==0);
	}
	$code.=<<___;
	sha1h $E0,$ABCD // $i
	sha1p $ABCD,$E1,$W1
	add.i32 $W1,@Kxx[$j],@MSG[3]

	sha1h $E1,$ABCD // 18
	sha1p $ABCD,$E0,$W0

	sha1h $E0,$ABCD // 19
	sha1p $ABCD,$E1,$W1

	add.i32 $E,$E,$E0
	add.i32 $ABCD,$ABCD,$ABCD_SAVE

	cbnz $num,.Loop_hw

	st1.32 {$ABCD},[$ctx],#16
	st1.32 {$E}[0],[$ctx]

	ldr x29,[sp],#16
	ret
	.size sha1_block_armv8,.-sha1_block_armv8
	.section .rodata
	.align 6
	.Lconst:
	.long 0x5a827999,0x5a827999,0x5a827999,0x5a827999 //K_00_19
	.long 0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1 //K_20_39
	.long 0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc //K_40_59
	.long 0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6 //K_60_79
	.asciz "SHA1 block transform for ARMv8, CRYPTOGAMS by <appro\@openssl.org>"
	.align 2
	___
	}}}

	{ my %opcode = (
	"sha1c" => 0x5e000000, "sha1p" => 0x5e001000,
	"sha1m" => 0x5e002000, "sha1su0" => 0x5e003000,
	"sha1h" => 0x5e280800, "sha1su1" => 0x5e281800 );

	sub unsha1 {
	my ($mnemonic,$arg)=@_;

	$arg =~ m/[qv]([0-9]+)[^,],\s[qv]([0-9]+)[^,](?:,\s[qv]([0-9]+))?/o
	&&
	sprintf ".inst\t0x%08x\t//%s %s",
	$opcode{$mnemonic}\|$1\|($2<<5)\|($3<<16),
	$mnemonic,$arg;
	}
	}

	foreach(split("\n",$code)) {

	s/\`([^\`]*)\`/eval($1)/geo;

	s/\b(sha1\w+)\s+([qv].*)/unsha1($1,$2)/geo;

	s/\.\w?32\b//o and s/\.16b/\.4s/go;
	m/(ld\|st)1[^\[]+\[0\]/o and s/\.4s/\.s/go;

	print $_,"\n";
	}

	close STDOUT or die "error closing STDOUT";