Commit d6f4b0a8 authored by Patrick Steuer's avatar Patrick Steuer Committed by Richard Levitte
Browse files

crypto/poly1305/asm/poly1305-s390x.pl: add vx code path. 



Signed-off-by: default avatarPatrick Steuer <patrick.steuer@de.ibm.com>

Reviewed-by: default avatarMatt Caswell <matt@openssl.org>
Reviewed-by: default avatarRichard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/7991)
parent 3499327b

crypto/poly1305/asm/poly1305-s390x.pl

+780 −164
Original line number Diff line number Diff line
@@ -24,204 +24,820 @@ 
#

# On side note, z13 enables vector base 2^26 implementation...



$flavour = shift;

#

# January 2019

#

# Add vx code path (base 2^26).

#

# Copyright IBM Corp. 2019

# Author: Patrick Steuer <patrick.steuer@de.ibm.com>



use strict;

use FindBin qw($Bin);

use lib "$Bin/../..";

use perlasm::s390x qw(:DEFAULT :VX AUTOLOAD LABEL);



my $flavour = shift;



my ($z,$SIZE_T);

if ($flavour =~ /3[12]/) {

	$z=0;	# S/390 ABI

	$SIZE_T=4;

	$g="";

} else {

	$z=1;	# zSeries ABI

	$SIZE_T=8;

	$g="g";

}



my $output;

while (($output=shift) && ($output!~/\w[\w\-]*\.\w+$/)) {}

open STDOUT,">$output";



$sp="%r15";

my $sp="%r15";



# novx code path ctx layout

# ---------------------------------

# var		value	base	off

# ---------------------------------

# u64 h[3]	hash	2^64	  0

# u32 pad[2]

# u64 r[2]	key	2^64	 32



# vx code path ctx layout

# ---------------------------------

# var		value	base	off

# ---------------------------------

# u32 acc1[5]	r^2-acc	2^26	  0

# u32 pad

# u32 acc2[5]	r-acc	2^26	 24

# u32 pad

# u32 r1[5]	r	2^26	 48

# u32 r15[5]	5*r	2^26	 68

# u32 r2[5]	r^2	2^26	 88

# u32 r25[5]	5*r^2	2^26	108

# u32 r4[5]	r^4	2^26	128

# u32 r45[5]	5*r^4	2^26	148



PERLASM_BEGIN($output);



TEXT	();



################

# static void poly1305_init(void *ctx, const unsigned char key[16])

{

my ($ctx,$key)=map("%r$_",(2..3));

my ($r0,$r1,$r2)=map("%r$_",(9,11,13));



my ($ctx,$inp,$len,$padbit) = map("%r$_",(2..5));

sub MUL_RKEY {	# r*=key

my ($d0hi,$d0lo,$d1hi,$d1lo)=map("%r$_",(4..7));

my ($t0,$t1,$s1)=map("%r$_",(8,10,12));



	lg	("%r0","32($ctx)");

	lg	("%r1","40($ctx)");



	srlg	($s1,"%r1",2);

	algr	($s1,"%r1");



	lgr	($d0lo,$r0);

	lgr	($d1lo,$r1);



	mlgr	($d0hi,"%r0");

	lgr	($r1,$d1lo);

	mlgr	($d1hi,$s1);



	mlgr	($t0,"%r1");

	mlgr	($t1,"%r0");



	algr	($d0lo,$d1lo);

	lgr	($d1lo,$r2);

	alcgr	($d0hi,$d1hi);

	lghi	($d1hi,0);



	algr	($r1,$r0);

	alcgr	($t1,$t0);



	msgr	($d1lo,$s1);

	msgr	($r2,"%r0");



	algr	($r1,$d1lo);

	alcgr	($t1,$d1hi);



	algr	($r1,$d0hi);

	alcgr	($r2,$t1);



	lghi	($r0,-4);

	ngr	($r0,$r2);

	srlg	($t0,$r2,2);

	algr	($r0,$t0);

	lghi	($t1,3);

	ngr	($r2,$t1);



	algr	($r0,$d0lo);

	alcgr	($r1,$d1hi);

	alcgr	($r2,$d1hi);

}



sub ST_R5R {	# store r,5*r -> base 2^26

my @d=map("%r$_",(4..8));

my @off=@_;



	lgr	(@d[2],$r0);

	lr	("%r1",@d[2]);

	nilh	("%r1",1023);

	lgr	(@d[3],$r1);

	lr	(@d[0],"%r1");

	srlg	("%r1",@d[2],52);

	lgr	(@d[4],$r2);

	srlg	("%r0",@d[2],26);

	sll	(@d[4],24);

	lr	(@d[2],@d[3]);

	nilh	("%r0",1023);

	sll	(@d[2],12);

	lr	(@d[1],"%r0");

	&or	(@d[2],"%r1");

	srlg	("%r1",@d[3],40);

	nilh	(@d[2],1023);

	&or	(@d[4],"%r1");

	srlg	(@d[3],@d[3],14);

	nilh	(@d[4],1023);

	nilh	(@d[3],1023);



	stm	(@d[0],@d[4],"@off[0]($ctx)");

	mhi	(@d[$_],5) for (0..4);

	stm	(@d[0],@d[4],"@off[1]($ctx)");

}



$code.=<<___;

.text



.globl	poly1305_init

.type	poly1305_init,\@function

.align	16

poly1305_init:

	lghi	%r0,0

	lghi	%r1,-1

	stg	%r0,0($ctx)		# zero hash value

	stg	%r0,8($ctx)

	stg	%r0,16($ctx)



	cl${g}r	$inp,%r0

	je	.Lno_key



	lrvg	%r4,0($inp)		# load little-endian key

	lrvg	%r5,8($inp)



	nihl	%r1,0xffc0		# 0xffffffc0ffffffff

	srlg	%r0,%r1,4		# 0x0ffffffc0fffffff

	srlg	%r1,%r1,4

	nill	%r1,0xfffc		# 0x0ffffffc0ffffffc



	ngr	%r4,%r0

	ngr	%r5,%r1



	stg	%r4,32($ctx)

	stg	%r5,40($ctx)



.Lno_key:

	lghi	%r2,0

	br	%r14

.size	poly1305_init,.-poly1305_init

___

GLOBL	("poly1305_init");

TYPE	("poly1305_init","\@function");

ALIGN	(16);

LABEL	("poly1305_init");

	lghi	("%r0",0);

	lghi	("%r1",-1);

	stg	("%r0","0($ctx)");	# zero hash value / acc1

	stg	("%r0","8($ctx)");

	stg	("%r0","16($ctx)");



&{$z?	\&clgr:\&clr}	($key,"%r0");

	je	(".Ldone");



	lrvg	("%r4","0($key)");	# load little-endian key

	lrvg	("%r5","8($key)");



	nihl	("%r1",0xffc0);		# 0xffffffc0ffffffff

	srlg	("%r0","%r1",4);	# 0x0ffffffc0fffffff

	srlg	("%r1","%r1",4);

	nill	("%r1",0xfffc);		# 0x0ffffffc0ffffffc



	ngr	("%r4","%r0");

	ngr	("%r5","%r1");



	stg	("%r4","32($ctx)");

	stg	("%r5","40($ctx)");



	larl	("%r1","OPENSSL_s390xcap_P");

	lg	("%r0","16(%r1)");

	tmhh	("%r0",0x4000);		# check for vector facility

	jz	(".Ldone");



	larl	("%r4","poly1305_blocks_vx");

	larl	("%r5","poly1305_emit_vx");



&{$z?	\&stmg:\&stm}	("%r6","%r13","6*$SIZE_T($sp)");

&{$z?	\&stmg:\&stm}	("%r4","%r5","4*$z+228($ctx)");



	lg	($r0,"32($ctx)");

	lg	($r1,"40($ctx)");

	lghi	($r2,0);



	ST_R5R	(48,68);	# store r,5*r



	MUL_RKEY();

	ST_R5R	(88,108);	# store r^2,5*r^2



	MUL_RKEY();

	MUL_RKEY();

	ST_R5R	(128,148);	# store r^4,5*r^4



	lghi	("%r0",0);

	stg	("%r0","24($ctx)");	# zero acc2

	stg	("%r0","32($ctx)");

	stg	("%r0","40($ctx)");



&{$z?	\&lmg:\&lm}	("%r6","%r13","6*$SIZE_T($sp)");

	lghi	("%r2",1);

	br	("%r14");



LABEL	(".Ldone");

	lghi	("%r2",0);

	br	("%r14");

SIZE	("poly1305_init",".-poly1305_init");

}



# VX CODE PATH

{

my ($d0hi,$d0lo,$d1hi,$d1lo,$t0,$h0,$t1,$h1,$h2) = map("%r$_",(6..14));

my ($r0,$r1,$s1) = map("%r$_",(0..2));

my $frame=8*16;

my @m01=map("%v$_",(0..4));

my @m23=map("%v$_",(5..9));

my @tmp=@m23;

my @acc=map("%v$_",(10..14));

my @r=map("%v$_",(15..19));

my @r5=map("%v$_",(20..24));

my $padvec="%v26";

my $mask4="%v27";

my @vperm=map("%v$_",(28..30));

my $mask="%v31";



sub REDUCE {

	vesrlg	(@tmp[0],@acc[0],26);

	vesrlg	(@tmp[3],@acc[3],26);

	vn	(@acc[0],@acc[0],$mask);

	vn	(@acc[3],@acc[3],$mask);

	vag	(@acc[1],@acc[1],@tmp[0]);	# carry 0->1

	vag	(@acc[4],@acc[4],@tmp[3]);	# carry 3->4



	vesrlg	(@tmp[1],@acc[1],26);

	vesrlg	(@tmp[4],@acc[4],26);

	vn	(@acc[1],@acc[1],$mask);

	vn	(@acc[4],@acc[4],$mask);

	veslg	(@tmp[0],@tmp[4],2);

	vag	(@tmp[4],@tmp[4],@tmp[0]);	# h[4]*=5

	vag	(@acc[2],@acc[2],@tmp[1]);	# carry 1->2

	vag	(@acc[0],@acc[0],@tmp[4]);	# carry 4->0



	vesrlg	(@tmp[2],@acc[2],26);

	vesrlg	(@tmp[0],@acc[0],26);

	vn	(@acc[2],@acc[2],$mask);

	vn	(@acc[0],@acc[0],$mask);

	vag	(@acc[3],@acc[3],@tmp[2]);	# carry 2->3

	vag	(@acc[1],@acc[1],@tmp[0]);	# carry 0->1



	vesrlg	(@tmp[3],@acc[3],26);

	vn	(@acc[3],@acc[3],$mask);

	vag	(@acc[4],@acc[4],@tmp[3]);	# carry 3->4

}



$code.=<<___;

.globl	poly1305_blocks

.type	poly1305_blocks,\@function

.align	16

poly1305_blocks:

	srl${g}	$len,4			# fixed-up in 64-bit build

	lghi	%r0,0

	cl${g}r	$len,%r0

	je	.Lno_data

################

# static void poly1305_blocks_vx(void *ctx, const unsigned char *inp,

#                                size_t len, u32 padbit)

{

my ($ctx,$inp,$len) = map("%r$_",(2..4));

my $padbit="%r0";



GLOBL	("poly1305_blocks_vx");

TYPE	("poly1305_blocks_vx","\@function");

ALIGN	(16);

LABEL	("poly1305_blocks_vx");

if ($z) {

	aghi	($sp,-$frame);

	vstm	("%v8","%v15","0($sp)");

} else {

	std	("%f4","16*$SIZE_T+2*8($sp)");

	std	("%f6","16*$SIZE_T+3*8($sp)");

	llgfr	($len,$len);

}

	llgfr	($padbit,"%r5");

	vlef	(@acc[$_],"4*$_($ctx)",1) for (0..4);	# load acc1

	larl	("%r5",".Lconst");

	vlef	(@acc[$_],"24+4*$_($ctx)",3) for (0..4);	# load acc2

	sllg	($padbit,$padbit,24);

	vlm	(@vperm[0],$mask,"0(%r5)");	# load vperm ops, mask

	vgbm	($mask4,0x0707);

	vlvgp	($padvec,$padbit,$padbit);



	srlg	("%r1",$len,6);

	ltgr	("%r1","%r1");

	jz	(".Lvx_4x_done");



ALIGN	(16);

LABEL	(".Lvx_4x");

	vlm	("%v20","%v23","0($inp)");	# load m0,m1,m2,m3



	# m01,m23 -> base 2^26



	vperm	(@m01[0],"%v20","%v21",@vperm[0]);

	vperm	(@m23[0],"%v22","%v23",@vperm[0]);

	vperm	(@m01[2],"%v20","%v21",@vperm[1]);

	vperm	(@m23[2],"%v22","%v23",@vperm[1]);

	vperm	(@m01[4],"%v20","%v21",@vperm[2]);

	vperm	(@m23[4],"%v22","%v23",@vperm[2]);



	vesrlg	(@m01[1],@m01[0],26);

	vesrlg	(@m23[1],@m23[0],26);

	vesrlg	(@m01[3],@m01[2],30);

	vesrlg	(@m23[3],@m23[2],30);

	vesrlg	(@m01[2],@m01[2],4);

	vesrlg	(@m23[2],@m23[2],4);



	vn	(@m01[4],@m01[4],$mask4);

	vn	(@m23[4],@m23[4],$mask4);

for (0..3) {

	vn	(@m01[$_],@m01[$_],$mask);

	vn	(@m23[$_],@m23[$_],$mask);

}

	vaf	(@m01[4],@m01[4],$padvec);	# pad m01

	vaf	(@m23[4],@m23[4],$padvec);	# pad m23



	# acc = acc * r^4 + m01 * r^2 + m23



	vlrepf	(@r5[$_],"4*$_+108($ctx)") for (0..4);	# load 5*r^2

	vlrepf	(@r[$_],"4*$_+88($ctx)") for (0..4);	# load r^2



	vmalof	(@tmp[0],@m01[4],@r5[1],@m23[0]);

	vmalof	(@tmp[1],@m01[4],@r5[2],@m23[1]);

	vmalof	(@tmp[2],@m01[4],@r5[3],@m23[2]);

	vmalof	(@tmp[3],@m01[4],@r5[4],@m23[3]);

	vmalof	(@tmp[4],@m01[4],@r[0],@m23[4]);



	vmalof	(@tmp[0],@m01[3],@r5[2],@tmp[0]);

	vmalof	(@tmp[1],@m01[3],@r5[3],@tmp[1]);

	vmalof	(@tmp[2],@m01[3],@r5[4],@tmp[2]);

	vmalof	(@tmp[3],@m01[3],@r[0],@tmp[3]);

	vmalof	(@tmp[4],@m01[3],@r[1],@tmp[4]);



	vmalof	(@tmp[0],@m01[2],@r5[3],@tmp[0]);

	vmalof	(@tmp[1],@m01[2],@r5[4],@tmp[1]);

	vmalof	(@tmp[2],@m01[2],@r[0],@tmp[2]);

	vmalof	(@tmp[3],@m01[2],@r[1],@tmp[3]);

	vmalof	(@tmp[4],@m01[2],@r[2],@tmp[4]);



	vmalof	(@tmp[0],@m01[1],@r5[4],@tmp[0]);

	vmalof	(@tmp[1],@m01[1],@r[0],@tmp[1]);

	vmalof	(@tmp[2],@m01[1],@r[1],@tmp[2]);

	vmalof	(@tmp[3],@m01[1],@r[2],@tmp[3]);

	vmalof	(@tmp[4],@m01[1],@r[3],@tmp[4]);



	vmalof	(@tmp[0],@m01[0],@r[0],@tmp[0]);

	vmalof	(@tmp[1],@m01[0],@r[1],@tmp[1]);

	vmalof	(@tmp[2],@m01[0],@r[2],@tmp[2]);

	vmalof	(@tmp[3],@m01[0],@r[3],@tmp[3]);

	vmalof	(@tmp[4],@m01[0],@r[4],@tmp[4]);



	vlrepf	(@r5[$_],"4*$_+148($ctx)") for (0..4);	# load 5*r^4

	vlrepf	(@r[$_],"4*$_+128($ctx)") for (0..4);	# load r^4



	vmalof	(@tmp[0],@acc[4],@r5[1],@tmp[0]);

	vmalof	(@tmp[1],@acc[4],@r5[2],@tmp[1]);

	vmalof	(@tmp[2],@acc[4],@r5[3],@tmp[2]);

	vmalof	(@tmp[3],@acc[4],@r5[4],@tmp[3]);

	vmalof	(@tmp[4],@acc[4],@r[0],@tmp[4]);



	vmalof	(@tmp[0],@acc[3],@r5[2],@tmp[0]);

	vmalof	(@tmp[1],@acc[3],@r5[3],@tmp[1]);

	vmalof	(@tmp[2],@acc[3],@r5[4],@tmp[2]);

	vmalof	(@tmp[3],@acc[3],@r[0],@tmp[3]);

	vmalof	(@tmp[4],@acc[3],@r[1],@tmp[4]);



	vmalof	(@tmp[0],@acc[2],@r5[3],@tmp[0]);

	vmalof	(@tmp[1],@acc[2],@r5[4],@tmp[1]);

	vmalof	(@tmp[2],@acc[2],@r[0],@tmp[2]);

	vmalof	(@tmp[3],@acc[2],@r[1],@tmp[3]);

	vmalof	(@tmp[4],@acc[2],@r[2],@tmp[4]);



	vmalof	(@tmp[0],@acc[1],@r5[4],@tmp[0]);

	vmalof	(@tmp[1],@acc[1],@r[0],@tmp[1]);

	vmalof	(@tmp[2],@acc[1],@r[1],@tmp[2]);

	vmalof	(@tmp[3],@acc[1],@r[2],@tmp[3]);

	vmalof	(@tmp[4],@acc[1],@r[3],@tmp[4]);



	vmalof	(@acc[1],@acc[0],@r[1],@tmp[1]);

	vmalof	(@acc[2],@acc[0],@r[2],@tmp[2]);

	vmalof	(@acc[3],@acc[0],@r[3],@tmp[3]);

	vmalof	(@acc[4],@acc[0],@r[4],@tmp[4]);

	vmalof	(@acc[0],@acc[0],@r[0],@tmp[0]);



	REDUCE	();



	la	($inp,"64($inp)");

	brctg	("%r1",".Lvx_4x");



ALIGN	(16);

LABEL	(".Lvx_4x_done");

	tml	($len,32);

	jz	(".Lvx_2x_done");



	vlm	("%v20","%v21","0($inp)");	# load m0,m1



	# m01 -> base 2^26



	vperm	(@m01[0],"%v20","%v21",@vperm[0]);

	vperm	(@m01[2],"%v20","%v21",@vperm[1]);

	vperm	(@m01[4],"%v20","%v21",@vperm[2]);



	vesrlg	(@m01[1],@m01[0],26);

	vesrlg	(@m01[3],@m01[2],30);

	vesrlg	(@m01[2],@m01[2],4);



	vn	(@m01[4],@m01[4],$mask4);

	vn	(@m01[$_],@m01[$_],$mask) for (0..3);



	vaf	(@m01[4],@m01[4],$padvec);	# pad m01



	# acc = acc * r^2+ m01



	vlrepf	(@r5[$_],"4*$_+108($ctx)") for (0..4);	# load 5*r^2

	vlrepf	(@r[$_],"4*$_+88($ctx)") for (0..4);	# load r^2



	vmalof	(@tmp[0],@acc[4],@r5[1],@m01[0]);

	vmalof	(@tmp[1],@acc[4],@r5[2],@m01[1]);

	vmalof	(@tmp[2],@acc[4],@r5[3],@m01[2]);

	vmalof	(@tmp[3],@acc[4],@r5[4],@m01[3]);

	vmalof	(@tmp[4],@acc[4],@r[0],@m01[4]);



	vmalof	(@tmp[0],@acc[3],@r5[2],@tmp[0]);

	vmalof	(@tmp[1],@acc[3],@r5[3],@tmp[1]);

	vmalof	(@tmp[2],@acc[3],@r5[4],@tmp[2]);

	vmalof	(@tmp[3],@acc[3],@r[0],@tmp[3]);

	vmalof	(@tmp[4],@acc[3],@r[1],@tmp[4]);



	vmalof	(@tmp[0],@acc[2],@r5[3],@tmp[0]);

	vmalof	(@tmp[1],@acc[2],@r5[4],@tmp[1]);

	vmalof	(@tmp[2],@acc[2],@r[0],@tmp[2]);

	vmalof	(@tmp[3],@acc[2],@r[1],@tmp[3]);

	vmalof	(@tmp[4],@acc[2],@r[2],@tmp[4]);



	vmalof	(@tmp[0],@acc[1],@r5[4],@tmp[0]);

	vmalof	(@tmp[1],@acc[1],@r[0],@tmp[1]);

	vmalof	(@tmp[2],@acc[1],@r[1],@tmp[2]);

	vmalof	(@tmp[3],@acc[1],@r[2],@tmp[3]);

	vmalof	(@tmp[4],@acc[1],@r[3],@tmp[4]);



	vmalof	(@acc[1],@acc[0],@r[1],@tmp[1]);

	vmalof	(@acc[2],@acc[0],@r[2],@tmp[2]);

	vmalof	(@acc[3],@acc[0],@r[3],@tmp[3]);

	vmalof	(@acc[4],@acc[0],@r[4],@tmp[4]);

	vmalof	(@acc[0],@acc[0],@r[0],@tmp[0]);



	REDUCE	();



	la	($inp,"32($inp)");



ALIGN	(16);

LABEL	(".Lvx_2x_done");

	tml	($len,16);

	jz	(".Lvx_done");



	vleig	($padvec,0,0);



	vzero	("%v20");

	vl	("%v21","0($inp)");	# load m0



	# m0 -> base 2^26



	vperm	(@m01[0],"%v20","%v21",@vperm[0]);

	vperm	(@m01[2],"%v20","%v21",@vperm[1]);

	vperm	(@m01[4],"%v20","%v21",@vperm[2]);



	vesrlg	(@m01[1],@m01[0],26);

	vesrlg	(@m01[3],@m01[2],30);

	vesrlg	(@m01[2],@m01[2],4);



	vn	(@m01[4],@m01[4],$mask4);

	vn	(@m01[$_],@m01[$_],$mask) for (0..3);



	vaf	(@m01[4],@m01[4],$padvec);	# pad m0



	# acc = acc * r + m01



	vlrepf	(@r5[$_],"4*$_+68($ctx)") for (0..4);	# load 5*r

	vlrepf	(@r[$_],"4*$_+48($ctx)") for (0..4);	# load r



	vmalof	(@tmp[0],@acc[4],@r5[1],@m01[0]);

	vmalof	(@tmp[1],@acc[4],@r5[2],@m01[1]);

	vmalof	(@tmp[2],@acc[4],@r5[3],@m01[2]);

	vmalof	(@tmp[3],@acc[4],@r5[4],@m01[3]);

	vmalof	(@tmp[4],@acc[4],@r[0],@m01[4]);



	vmalof	(@tmp[0],@acc[3],@r5[2],@tmp[0]);

	vmalof	(@tmp[1],@acc[3],@r5[3],@tmp[1]);

	vmalof	(@tmp[2],@acc[3],@r5[4],@tmp[2]);

	vmalof	(@tmp[3],@acc[3],@r[0],@tmp[3]);

	vmalof	(@tmp[4],@acc[3],@r[1],@tmp[4]);



	vmalof	(@tmp[0],@acc[2],@r5[3],@tmp[0]);

	vmalof	(@tmp[1],@acc[2],@r5[4],@tmp[1]);

	vmalof	(@tmp[2],@acc[2],@r[0],@tmp[2]);

	vmalof	(@tmp[3],@acc[2],@r[1],@tmp[3]);

	vmalof	(@tmp[4],@acc[2],@r[2],@tmp[4]);



	vmalof	(@tmp[0],@acc[1],@r5[4],@tmp[0]);

	vmalof	(@tmp[1],@acc[1],@r[0],@tmp[1]);

	vmalof	(@tmp[2],@acc[1],@r[1],@tmp[2]);

	vmalof	(@tmp[3],@acc[1],@r[2],@tmp[3]);

	vmalof	(@tmp[4],@acc[1],@r[3],@tmp[4]);



	vmalof	(@acc[1],@acc[0],@r[1],@tmp[1]);

	vmalof	(@acc[2],@acc[0],@r[2],@tmp[2]);

	vmalof	(@acc[3],@acc[0],@r[3],@tmp[3]);

	vmalof	(@acc[4],@acc[0],@r[4],@tmp[4]);

	vmalof	(@acc[0],@acc[0],@r[0],@tmp[0]);



	REDUCE	();



ALIGN	(16);

LABEL	(".Lvx_done");

	vstef	(@acc[$_],"4*$_($ctx)",1) for (0..4);	# store acc

	vstef	(@acc[$_],"24+4*$_($ctx)",3) for (0..4);



if ($z) {

	vlm	("%v8","%v15","0($sp)");

	la	($sp,"$frame($sp)");

} else {

	ld	("%f4","16*$SIZE_T+2*8($sp)");

	ld	("%f6","16*$SIZE_T+3*8($sp)");

}

	br	("%r14");

SIZE	("poly1305_blocks_vx",".-poly1305_blocks_vx");

}



	stm${g}	%r6,%r14,`6*$SIZE_T`($sp)

################

# static void poly1305_emit_vx(void *ctx, unsigned char mac[16],

#                              const u32 nonce[4])

{

my ($ctx,$mac,$nonce) = map("%r$_",(2..4));



GLOBL	("poly1305_emit_vx");

TYPE	("poly1305_emit_vx","\@function");

ALIGN	(16);

LABEL	("poly1305_emit_vx");

if ($z) {

	aghi	($sp,-$frame);

	vstm	("%v8","%v15","0($sp)");

} else {

	std	("%f4","16*$SIZE_T+2*8($sp)");

	std	("%f6","16*$SIZE_T+3*8($sp)");

}

	larl	("%r5",".Lconst");



	llgfr   $padbit,$padbit		# clear upper half, much needed with

	vlef	(@acc[$_],"4*$_($ctx)",1) for (0..4);	# load acc1

	vlef	(@acc[$_],"24+4*$_($ctx)",3) for (0..4);	# load acc2

	vlef	(@r5[$_],"108+4*$_($ctx)",1) for (0..4);	# load 5*r^2

	vlef	(@r[$_],"88+4*$_($ctx)",1) for (0..4);	# load r^2

	vlef	(@r5[$_],"68+4*$_($ctx)",3) for (0..4);	# load 5*r

	vlef	(@r[$_],"48+4*$_($ctx)",3) for (0..4);	# load r

	vl	($mask,"48(%r5)");	# load mask



	# acc = acc1 * r^2 + acc2 * r



	vmlof	(@tmp[0],@acc[4],@r5[1]);

	vmlof	(@tmp[1],@acc[4],@r5[2]);

	vmlof	(@tmp[2],@acc[4],@r5[3]);

	vmlof	(@tmp[3],@acc[4],@r5[4]);

	vmlof	(@tmp[4],@acc[4],@r[0]);



	vmalof	(@tmp[0],@acc[3],@r5[2],@tmp[0]);

	vmalof	(@tmp[1],@acc[3],@r5[3],@tmp[1]);

	vmalof	(@tmp[2],@acc[3],@r5[4],@tmp[2]);

	vmalof	(@tmp[3],@acc[3],@r[0],@tmp[3]);

	vmalof	(@tmp[4],@acc[3],@r[1],@tmp[4]);



	vmalof	(@tmp[0],@acc[2],@r5[3],@tmp[0]);

	vmalof	(@tmp[1],@acc[2],@r5[4],@tmp[1]);

	vmalof	(@tmp[2],@acc[2],@r[0],@tmp[2]);

	vmalof	(@tmp[3],@acc[2],@r[1],@tmp[3]);

	vmalof	(@tmp[4],@acc[2],@r[2],@tmp[4]);



	vmalof	(@tmp[0],@acc[1],@r5[4],@tmp[0]);

	vmalof	(@tmp[1],@acc[1],@r[0],@tmp[1]);

	vmalof	(@tmp[2],@acc[1],@r[1],@tmp[2]);

	vmalof	(@tmp[3],@acc[1],@r[2],@tmp[3]);

	vmalof	(@tmp[4],@acc[1],@r[3],@tmp[4]);



	vmalof	(@acc[1],@acc[0],@r[1],@tmp[1]);

	vmalof	(@acc[2],@acc[0],@r[2],@tmp[2]);

	vmalof	(@acc[3],@acc[0],@r[3],@tmp[3]);

	vmalof	(@acc[4],@acc[0],@r[4],@tmp[4]);

	vmalof	(@acc[0],@acc[0],@r[0],@tmp[0]);



	vzero	("%v27");

	vsumqg	(@acc[$_],@acc[$_],"%v27") for (0..4);



	REDUCE	();



	vesrlg	(@tmp[1],@acc[1],26);

	vn	(@acc[1],@acc[1],$mask);

	vag	(@acc[2],@acc[2],@tmp[1]);	# carry 1->2



	vesrlg	(@tmp[2],@acc[2],26);

	vn	(@acc[2],@acc[2],$mask);

	vag	(@acc[3],@acc[3],@tmp[2]);	# carry 2->3



	vesrlg	(@tmp[3],@acc[3],26);

	vn	(@acc[3],@acc[3],$mask);

	vag	(@acc[4],@acc[4],@tmp[3]);	# carry 3->4



	# acc -> base 2^64

	vleib	("%v30",6*8,7);

	vleib	("%v29",13*8,7);

	vleib	("%v28",3*8,7);



	veslg	(@acc[1],@acc[1],26);

	veslg	(@acc[3],@acc[3],26);

	vo	(@acc[0],@acc[0],@acc[1]);

	vo	(@acc[2],@acc[2],@acc[3]);



	veslg	(@acc[2],@acc[2],4);

	vslb	(@acc[2],@acc[2],"%v30");	# <<52

	vo	(@acc[0],@acc[0],@acc[2]);



	vslb	(@tmp[4],@acc[4],"%v29");	# <<104

	vo	(@acc[0],@acc[0],@tmp[4]);



	vsrlb	(@acc[1],@acc[4],"%v28");	# >>24



	# acc %= 2^130-5

	vone	("%v26");

	vleig	("%v27",5,1);

	vone	("%v29");

	vleig	("%v26",-4,1);



	vaq	(@tmp[0],@acc[0],"%v27");

	vaccq	(@tmp[1],@acc[0],"%v27");



	vaq	(@tmp[1],@tmp[1],"%v26");

	vaccq	(@tmp[1],@tmp[1],@acc[1]);



	vaq	(@tmp[1],@tmp[1],"%v29");



	vn	(@tmp[2],@tmp[1],@acc[0]);

	vnc	(@tmp[3],@tmp[0],@tmp[1]);

	vo	(@acc[0],@tmp[2],@tmp[3]);



	# acc += nonce

	vl	(@vperm[0],"64(%r5)");

	vlef	(@tmp[0],"4*$_($nonce)",3-$_) for (0..3);



	vaq	(@acc[0],@acc[0],@tmp[0]);



	vperm	(@acc[0],@acc[0],@acc[0],@vperm[0]);

	vst	(@acc[0],"0($mac)");	# store mac



if ($z) {

	vlm	("%v8","%v15","0($sp)");

	la	($sp,"$frame($sp)");

} else {

	ld	("%f4","16*$SIZE_T+2*8($sp)");

	ld	("%f6","16*$SIZE_T+3*8($sp)");

}

	br	("%r14");

SIZE	("poly1305_emit_vx",".-poly1305_emit_vx");

}

}



# NOVX CODE PATH

{

################

# static void poly1305_blocks(void *ctx, const unsigned char *inp, size_t len,

#                             u32 padbit)

{

my ($ctx,$inp,$len,$padbit) = map("%r$_",(2..5));



my ($d0hi,$d0lo,$d1hi,$d1lo,$t0,$h0,$t1,$h1,$h2) = map("%r$_",(6..14));

my ($r0,$r1,$s1) = map("%r$_",(0..2));

GLOBL	("poly1305_blocks");

TYPE	("poly1305_blocks","\@function");

ALIGN	(16);

LABEL	("poly1305_blocks");

$z?	srlg	($len,$len,4)	:srl	($len,4);

	lghi	("%r0",0);

&{$z?	\&clgr:\&clr}	($len,"%r0");

	je	(".Lno_data");



&{$z?	\&stmg:\&stm}	("%r6","%r14","6*$SIZE_T($sp)");



	llgfr	($padbit,$padbit);	# clear upper half, much needed with

					# non-64-bit ABI

	lg	$r0,32($ctx)		# load key

	lg	$r1,40($ctx)

	lg	($r0,"32($ctx)");	# load key

	lg	($r1,"40($ctx)");



	lg	$h0,0($ctx)		# load hash value

	lg	$h1,8($ctx)

	lg	$h2,16($ctx)

	lg	($h0,"0($ctx)");	# load hash value

	lg	($h1,"8($ctx)");

	lg	($h2,"16($ctx)");



	st$g	$ctx,`2*$SIZE_T`($sp)	# off-load $ctx

	srlg	$s1,$r1,2

	algr	$s1,$r1			# s1 = r1 + r1>>2

	j	.Loop

&{$z?	\&stg:\&st}	($ctx,"2*$SIZE_T($sp)");	# off-load $ctx

	srlg	($s1,$r1,2);

	algr	($s1,$r1);			# s1 = r1 + r1>>2

	j	(".Loop");



.align	16

.Loop:

	lrvg	$d0lo,0($inp)		# load little-endian input

	lrvg	$d1lo,8($inp)

	la	$inp,16($inp)

ALIGN	(16);

LABEL	(".Loop");

	lrvg	($d0lo,"0($inp)");	# load little-endian input

	lrvg	($d1lo,"8($inp)");

	la	($inp,"16($inp)");



	algr	$d0lo,$h0		# accumulate input

	alcgr	$d1lo,$h1

	algr	($d0lo,$h0);		# accumulate input

	alcgr	($d1lo,$h1);



	lgr	$h0,$d0lo

	mlgr	$d0hi,$r0		# h0*r0	  -> $d0hi:$d0lo

	lgr	$h1,$d1lo

	mlgr	$d1hi,$s1		# h1*5*r1 -> $d1hi:$d1lo

	lgr	($h0,$d0lo);

	mlgr	($d0hi,$r0);		# h0*r0	  -> $d0hi:$d0lo

	lgr	($h1,$d1lo);

	mlgr	($d1hi,$s1);		# h1*5*r1 -> $d1hi:$d1lo



	mlgr	$t0,$r1			# h0*r1   -> $t0:$h0

	mlgr	$t1,$r0			# h1*r0   -> $t1:$h1

	alcgr	$h2,$padbit

	mlgr	($t0,$r1);		# h0*r1   -> $t0:$h0

	mlgr	($t1,$r0);		# h1*r0   -> $t1:$h1

	alcgr	($h2,$padbit);



	algr	$d0lo,$d1lo

	lgr	$d1lo,$h2

	alcgr	$d0hi,$d1hi

	lghi	$d1hi,0

	algr	($d0lo,$d1lo);

	lgr	($d1lo,$h2);

	alcgr	($d0hi,$d1hi);

	lghi	($d1hi,0);



	algr	$h1,$h0

	alcgr	$t1,$t0

	algr	($h1,$h0);

	alcgr	($t1,$t0);



	msgr	$d1lo,$s1		# h2*s1

	msgr	$h2,$r0			# h2*r0

	msgr	($d1lo,$s1);		# h2*s1

	msgr	($h2,$r0);		# h2*r0



	algr	$h1,$d1lo

	alcgr	$t1,$d1hi		# $d1hi is zero

	algr	($h1,$d1lo);

	alcgr	($t1,$d1hi);		# $d1hi is zero



	algr	$h1,$d0hi

	alcgr	$h2,$t1

	algr	($h1,$d0hi);

	alcgr	($h2,$t1);



	lghi	$h0,-4			# final reduction step

	ngr	$h0,$h2

	srlg	$t0,$h2,2

	algr	$h0,$t0

	lghi	$t1,3

	ngr	$h2,$t1

	lghi	($h0,-4);		# final reduction step

	ngr	($h0,$h2);

	srlg	($t0,$h2,2);

	algr	($h0,$t0);

	lghi	($t1,3);

	ngr	($h2,$t1);



	algr	$h0,$d0lo

	alcgr	$h1,$d1hi		# $d1hi is still zero

	alcgr	$h2,$d1hi		# $d1hi is still zero

	algr	($h0,$d0lo);

	alcgr	($h1,$d1hi);		# $d1hi is still zero

	alcgr	($h2,$d1hi);		# $d1hi is still zero



	brct$g	$len,.Loop

&{$z?	\&brctg:\&brct}	($len,".Loop");



	l$g	$ctx,`2*$SIZE_T`($sp)	# restore $ctx

&{$z?	\&lg:\&l}	($ctx,"2*$SIZE_T($sp)");# restore $ctx



	stg	$h0,0($ctx)		# store hash value

	stg	$h1,8($ctx)

	stg	$h2,16($ctx)

	stg	($h0,"0($ctx)");	# store hash value

	stg	($h1,"8($ctx)");

	stg	($h2,"16($ctx)");



	lm${g}	%r6,%r14,`6*$SIZE_T`($sp)

.Lno_data:

	br	%r14

.size	poly1305_blocks,.-poly1305_blocks

___

&{$z?	\&lmg:\&lm}	("%r6","%r14","6*$SIZE_T($sp)");

LABEL	(".Lno_data");

	br	("%r14");

SIZE	("poly1305_blocks",".-poly1305_blocks");

}



################

# static void poly1305_emit(void *ctx, unsigned char mac[16],

#                           const u32 nonce[4])

{

my ($mac,$nonce)=($inp,$len);

my ($ctx,$mac,$nonce) = map("%r$_",(2..4));

my ($h0,$h1,$h2,$d0,$d1)=map("%r$_",(5..9));



$code.=<<___;

.globl	poly1305_emit

.type	poly1305_emit,\@function

.align	16

poly1305_emit:

	stm${g}	%r6,%r9,`6*$SIZE_T`($sp)



	lg	$h0,0($ctx)

	lg	$h1,8($ctx)

	lg	$h2,16($ctx)



	lghi	%r0,5

	lghi	%r1,0

	lgr	$d0,$h0

	lgr	$d1,$h1



	algr	$h0,%r0			# compare to modulus

	alcgr	$h1,%r1

	alcgr	$h2,%r1



	srlg	$h2,$h2,2		# did it borrow/carry?

	slgr	%r1,$h2			# 0-$h2>>2

	lg	$h2,0($nonce)		# load nonce

	lghi	%r0,-1

	lg	$ctx,8($nonce)

	xgr	%r0,%r1			# ~%r1



	ngr	$h0,%r1

	ngr	$d0,%r0

	ngr	$h1,%r1

	ngr	$d1,%r0

	ogr	$h0,$d0

	rllg	$d0,$h2,32		# flip nonce words

	ogr	$h1,$d1

	rllg	$d1,$ctx,32



	algr	$h0,$d0			# accumulate nonce

	alcgr	$h1,$d1



	strvg	$h0,0($mac)		# write little-endian result

	strvg	$h1,8($mac)



	lm${g}	%r6,%r9,`6*$SIZE_T`($sp)

	br	%r14

.size	poly1305_emit,.-poly1305_emit



.string	"Poly1305 for s390x, CRYPTOGAMS by <appro\@openssl.org>"

___

}



$code =~ s/\`([^\`]*)\`/eval $1/gem;

$code =~ s/\b(srlg\s+)(%r[0-9]+\s*,)\s*([0-9]+)/$1$2$2$3/gm;



print $code;

close STDOUT;
 
GLOBL	("poly1305_emit");

TYPE	("poly1305_emit","\@function");

ALIGN	(16);

LABEL	("poly1305_emit");

&{$z?	\&stmg:\&stm}	("%r6","%r9","6*$SIZE_T($sp)");



	lg	($h0,"0($ctx)");

	lg	($h1,"8($ctx)");

	lg	($h2,"16($ctx)");



	lghi	("%r0",5);

	lghi	("%r1",0);

	lgr	($d0,$h0);

	lgr	($d1,$h1);



	algr	($h0,"%r0");		# compare to modulus

	alcgr	($h1,"%r1");

	alcgr	($h2,"%r1");



	srlg	($h2,$h2,2);		# did it borrow/carry?

	slgr	("%r1",$h2);		# 0-$h2>>2

	lg	($h2,"0($nonce)");	# load nonce

	lghi	("%r0",-1);

	lg	($ctx,"8($nonce)");

	xgr	("%r0","%r1");		# ~%r1



	ngr	($h0,"%r1");

	ngr	($d0,"%r0");

	ngr	($h1,"%r1");

	ngr	($d1,"%r0");

	ogr	($h0,$d0);

	rllg	($d0,$h2,32);		# flip nonce words

	ogr	($h1,$d1);

	rllg	($d1,$ctx,32);



	algr	($h0,$d0);		# accumulate nonce

	alcgr	($h1,$d1);



	strvg	($h0,"0($mac)");	# write little-endian result

	strvg	($h1,"8($mac)");



&{$z?	\&lmg:\&lm}	("%r6","%r9","6*$SIZE_T($sp)");

	br	("%r14");

SIZE	("poly1305_emit",".-poly1305_emit");

}

}

################



ALIGN	(128);

LABEL	(".Lconst");

LONG	(0x00060504,0x03020100,0x00161514,0x13121110);	# vperm op[m[1],m[0]]

LONG	(0x000c0b0a,0x09080706,0x001c1b1a,0x19181716);	# vperm op[m[3],m[2]]

LONG	(0x00000000,0x000f0e0d,0x00000000,0x001f1e1d);	# vperm op[  - ,m[4]]

LONG	(0x00000000,0x03ffffff,0x00000000,0x03ffffff);	# [0,2^26-1,0,2^26-1]

LONG	(0x0f0e0d0c,0x0b0a0908,0x07060504,0x03020100);	# vperm op endian

STRING	("\"Poly1305 for s390x, CRYPTOGAMS by <appro\@openssl.org>\"");



PERLASM_END();