#! /usr/bin/env perl
-# Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
+# Copyright 2016-2019 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the Apache License 2.0 (the "License"). You may not use
# this file except in compliance with the License. You can obtain a copy
#
# 3 times faster than compiler-generated code.
-$flavour = shift;
+#
+# August 2018
+#
+# Add vx code path: 4x"vertical".
+#
+# Copyright IBM Corp. 2018
+# Author: Patrick Steuer <patrick.steuer@de.ibm.com>
+
+#
+# February 2019
+#
+# Add 6x"horizontal" VX implementation. It's ~25% faster than IBM's
+# 4x"vertical" submission [on z13] and >3 faster than scalar code.
+# But to harness overheads revert to transliteration of VSX code path
+# from chacha-ppc module, which is also 4x"vertical", to handle inputs
+# not longer than 256 bytes.
+
+use strict;
+use FindBin qw($Bin);
+use lib "$Bin/../..";
+use perlasm::s390x qw(:DEFAULT :VX AUTOLOAD LABEL INCLUDE);
+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";
-
-sub AUTOLOAD() # thunk [simplified] x86-style perlasm
-{ my $opcode = $AUTOLOAD; $opcode =~ s/.*:://;
- $code .= "\t$opcode\t".join(',',@_)."\n";
-}
my $sp="%r15";
-
my $stdframe=16*$SIZE_T+4*8;
-my $frame=$stdframe+4*20;
-
-my ($out,$inp,$len,$key,$counter)=map("%r$_",(2..6));
+sub ROUND {
my @x=map("%r$_",(0..7,"x","x","x","x",(10..13)));
my @t=map("%r$_",(8,9));
-
-sub ROUND {
my ($a0,$b0,$c0,$d0)=@_;
my ($a1,$b1,$c1,$d1)=map(($_&~3)+(($_+1)&3),($a0,$b0,$c0,$d0));
my ($a2,$b2,$c2,$d2)=map(($_&~3)+(($_+1)&3),($a1,$b1,$c1,$d1));
my ($a3,$b3,$c3,$d3)=map(($_&~3)+(($_+1)&3),($a2,$b2,$c2,$d2));
-my ($xc,$xc_)=map("\"$_\"",@t);
-my @x=map("\"$_\"",@x);
+my ($xc,$xc_)=map("$_",@t);
# Consider order in which variables are addressed by their
# index:
# 'c' stores and loads in the middle, but none in the beginning
# or end.
- (
- "&alr (@x[$a0],@x[$b0])", # Q1
- "&alr (@x[$a1],@x[$b1])", # Q2
- "&xr (@x[$d0],@x[$a0])",
- "&xr (@x[$d1],@x[$a1])",
- "&rll (@x[$d0],@x[$d0],16)",
- "&rll (@x[$d1],@x[$d1],16)",
-
- "&alr ($xc,@x[$d0])",
- "&alr ($xc_,@x[$d1])",
- "&xr (@x[$b0],$xc)",
- "&xr (@x[$b1],$xc_)",
- "&rll (@x[$b0],@x[$b0],12)",
- "&rll (@x[$b1],@x[$b1],12)",
-
- "&alr (@x[$a0],@x[$b0])",
- "&alr (@x[$a1],@x[$b1])",
- "&xr (@x[$d0],@x[$a0])",
- "&xr (@x[$d1],@x[$a1])",
- "&rll (@x[$d0],@x[$d0],8)",
- "&rll (@x[$d1],@x[$d1],8)",
-
- "&alr ($xc,@x[$d0])",
- "&alr ($xc_,@x[$d1])",
- "&xr (@x[$b0],$xc)",
- "&xr (@x[$b1],$xc_)",
- "&rll (@x[$b0],@x[$b0],7)",
- "&rll (@x[$b1],@x[$b1],7)",
-
- "&stm ($xc,$xc_,'$stdframe+4*8+4*$c0($sp)')", # reload pair of 'c's
- "&lm ($xc,$xc_,'$stdframe+4*8+4*$c2($sp)')",
-
- "&alr (@x[$a2],@x[$b2])", # Q3
- "&alr (@x[$a3],@x[$b3])", # Q4
- "&xr (@x[$d2],@x[$a2])",
- "&xr (@x[$d3],@x[$a3])",
- "&rll (@x[$d2],@x[$d2],16)",
- "&rll (@x[$d3],@x[$d3],16)",
-
- "&alr ($xc,@x[$d2])",
- "&alr ($xc_,@x[$d3])",
- "&xr (@x[$b2],$xc)",
- "&xr (@x[$b3],$xc_)",
- "&rll (@x[$b2],@x[$b2],12)",
- "&rll (@x[$b3],@x[$b3],12)",
-
- "&alr (@x[$a2],@x[$b2])",
- "&alr (@x[$a3],@x[$b3])",
- "&xr (@x[$d2],@x[$a2])",
- "&xr (@x[$d3],@x[$a3])",
- "&rll (@x[$d2],@x[$d2],8)",
- "&rll (@x[$d3],@x[$d3],8)",
-
- "&alr ($xc,@x[$d2])",
- "&alr ($xc_,@x[$d3])",
- "&xr (@x[$b2],$xc)",
- "&xr (@x[$b3],$xc_)",
- "&rll (@x[$b2],@x[$b2],7)",
- "&rll (@x[$b3],@x[$b3],7)"
- );
+ alr (@x[$a0],@x[$b0]); # Q1
+ alr (@x[$a1],@x[$b1]); # Q2
+ xr (@x[$d0],@x[$a0]);
+ xr (@x[$d1],@x[$a1]);
+ rll (@x[$d0],@x[$d0],16);
+ rll (@x[$d1],@x[$d1],16);
+
+ alr ($xc,@x[$d0]);
+ alr ($xc_,@x[$d1]);
+ xr (@x[$b0],$xc);
+ xr (@x[$b1],$xc_);
+ rll (@x[$b0],@x[$b0],12);
+ rll (@x[$b1],@x[$b1],12);
+
+ alr (@x[$a0],@x[$b0]);
+ alr (@x[$a1],@x[$b1]);
+ xr (@x[$d0],@x[$a0]);
+ xr (@x[$d1],@x[$a1]);
+ rll (@x[$d0],@x[$d0],8);
+ rll (@x[$d1],@x[$d1],8);
+
+ alr ($xc,@x[$d0]);
+ alr ($xc_,@x[$d1]);
+ xr (@x[$b0],$xc);
+ xr (@x[$b1],$xc_);
+ rll (@x[$b0],@x[$b0],7);
+ rll (@x[$b1],@x[$b1],7);
+
+ stm ($xc,$xc_,"$stdframe+4*8+4*$c0($sp)"); # reload pair of 'c's
+ lm ($xc,$xc_,"$stdframe+4*8+4*$c2($sp)");
+
+ alr (@x[$a2],@x[$b2]); # Q3
+ alr (@x[$a3],@x[$b3]); # Q4
+ xr (@x[$d2],@x[$a2]);
+ xr (@x[$d3],@x[$a3]);
+ rll (@x[$d2],@x[$d2],16);
+ rll (@x[$d3],@x[$d3],16);
+
+ alr ($xc,@x[$d2]);
+ alr ($xc_,@x[$d3]);
+ xr (@x[$b2],$xc);
+ xr (@x[$b3],$xc_);
+ rll (@x[$b2],@x[$b2],12);
+ rll (@x[$b3],@x[$b3],12);
+
+ alr (@x[$a2],@x[$b2]);
+ alr (@x[$a3],@x[$b3]);
+ xr (@x[$d2],@x[$a2]);
+ xr (@x[$d3],@x[$a3]);
+ rll (@x[$d2],@x[$d2],8);
+ rll (@x[$d3],@x[$d3],8);
+
+ alr ($xc,@x[$d2]);
+ alr ($xc_,@x[$d3]);
+ xr (@x[$b2],$xc);
+ xr (@x[$b3],$xc_);
+ rll (@x[$b2],@x[$b2],7);
+ rll (@x[$b3],@x[$b3],7);
+}
+
+sub VX_lane_ROUND {
+my ($a0,$b0,$c0,$d0)=@_;
+my ($a1,$b1,$c1,$d1)=map(($_&~3)+(($_+1)&3),($a0,$b0,$c0,$d0));
+my ($a2,$b2,$c2,$d2)=map(($_&~3)+(($_+1)&3),($a1,$b1,$c1,$d1));
+my ($a3,$b3,$c3,$d3)=map(($_&~3)+(($_+1)&3),($a2,$b2,$c2,$d2));
+my @x=map("%v$_",(0..15));
+
+ vaf (@x[$a0],@x[$a0],@x[$b0]); # Q1
+ vx (@x[$d0],@x[$d0],@x[$a0]);
+ verllf (@x[$d0],@x[$d0],16);
+ vaf (@x[$a1],@x[$a1],@x[$b1]); # Q2
+ vx (@x[$d1],@x[$d1],@x[$a1]);
+ verllf (@x[$d1],@x[$d1],16);
+ vaf (@x[$a2],@x[$a2],@x[$b2]); # Q3
+ vx (@x[$d2],@x[$d2],@x[$a2]);
+ verllf (@x[$d2],@x[$d2],16);
+ vaf (@x[$a3],@x[$a3],@x[$b3]); # Q4
+ vx (@x[$d3],@x[$d3],@x[$a3]);
+ verllf (@x[$d3],@x[$d3],16);
+
+ vaf (@x[$c0],@x[$c0],@x[$d0]);
+ vx (@x[$b0],@x[$b0],@x[$c0]);
+ verllf (@x[$b0],@x[$b0],12);
+ vaf (@x[$c1],@x[$c1],@x[$d1]);
+ vx (@x[$b1],@x[$b1],@x[$c1]);
+ verllf (@x[$b1],@x[$b1],12);
+ vaf (@x[$c2],@x[$c2],@x[$d2]);
+ vx (@x[$b2],@x[$b2],@x[$c2]);
+ verllf (@x[$b2],@x[$b2],12);
+ vaf (@x[$c3],@x[$c3],@x[$d3]);
+ vx (@x[$b3],@x[$b3],@x[$c3]);
+ verllf (@x[$b3],@x[$b3],12);
+
+ vaf (@x[$a0],@x[$a0],@x[$b0]);
+ vx (@x[$d0],@x[$d0],@x[$a0]);
+ verllf (@x[$d0],@x[$d0],8);
+ vaf (@x[$a1],@x[$a1],@x[$b1]);
+ vx (@x[$d1],@x[$d1],@x[$a1]);
+ verllf (@x[$d1],@x[$d1],8);
+ vaf (@x[$a2],@x[$a2],@x[$b2]);
+ vx (@x[$d2],@x[$d2],@x[$a2]);
+ verllf (@x[$d2],@x[$d2],8);
+ vaf (@x[$a3],@x[$a3],@x[$b3]);
+ vx (@x[$d3],@x[$d3],@x[$a3]);
+ verllf (@x[$d3],@x[$d3],8);
+
+ vaf (@x[$c0],@x[$c0],@x[$d0]);
+ vx (@x[$b0],@x[$b0],@x[$c0]);
+ verllf (@x[$b0],@x[$b0],7);
+ vaf (@x[$c1],@x[$c1],@x[$d1]);
+ vx (@x[$b1],@x[$b1],@x[$c1]);
+ verllf (@x[$b1],@x[$b1],7);
+ vaf (@x[$c2],@x[$c2],@x[$d2]);
+ vx (@x[$b2],@x[$b2],@x[$c2]);
+ verllf (@x[$b2],@x[$b2],7);
+ vaf (@x[$c3],@x[$c3],@x[$d3]);
+ vx (@x[$b3],@x[$b3],@x[$c3]);
+ verllf (@x[$b3],@x[$b3],7);
+}
+
+sub VX_ROUND {
+my @a=@_[0..5];
+my @b=@_[6..11];
+my @c=@_[12..17];
+my @d=@_[18..23];
+my $odd=@_[24];
+
+ vaf (@a[$_],@a[$_],@b[$_]) for (0..5);
+ vx (@d[$_],@d[$_],@a[$_]) for (0..5);
+ verllf (@d[$_],@d[$_],16) for (0..5);
+
+ vaf (@c[$_],@c[$_],@d[$_]) for (0..5);
+ vx (@b[$_],@b[$_],@c[$_]) for (0..5);
+ verllf (@b[$_],@b[$_],12) for (0..5);
+
+ vaf (@a[$_],@a[$_],@b[$_]) for (0..5);
+ vx (@d[$_],@d[$_],@a[$_]) for (0..5);
+ verllf (@d[$_],@d[$_],8) for (0..5);
+
+ vaf (@c[$_],@c[$_],@d[$_]) for (0..5);
+ vx (@b[$_],@b[$_],@c[$_]) for (0..5);
+ verllf (@b[$_],@b[$_],7) for (0..5);
+
+ vsldb (@c[$_],@c[$_],@c[$_],8) for (0..5);
+ vsldb (@b[$_],@b[$_],@b[$_],$odd?12:4) for (0..5);
+ vsldb (@d[$_],@d[$_],@d[$_],$odd?4:12) for (0..5);
+}
+
+PERLASM_BEGIN($output);
+
+INCLUDE ("s390x_arch.h");
+TEXT ();
+
+################
+# void ChaCha20_ctr32(unsigned char *out, const unsigned char *inp, size_t len,
+# const unsigned int key[8], const unsigned int counter[4])
+my ($out,$inp,$len,$key,$counter)=map("%r$_",(2..6));
+{
+my $frame=$stdframe+4*20;
+my @x=map("%r$_",(0..7,"x","x","x","x",(10..13)));
+my @t=map("%r$_",(8,9));
+
+GLOBL ("ChaCha20_ctr32");
+TYPE ("ChaCha20_ctr32","\@function");
+ALIGN (32);
+LABEL ("ChaCha20_ctr32");
+ larl ("%r1","OPENSSL_s390xcap_P");
+
+ lghi ("%r0",64);
+&{$z? \<gr:\<r} ($len,$len); # len==0?
+ bzr ("%r14");
+ lg ("%r1","S390X_STFLE+16(%r1)");
+&{$z? \&clgr:\&clr} ($len,"%r0");
+ jle (".Lshort");
+
+ tmhh ("%r1",0x4000); # check for vx bit
+ jnz (".LChaCha20_ctr32_vx");
+
+LABEL (".Lshort");
+&{$z? \&aghi:\&ahi} ($len,-64);
+&{$z? \&lghi:\&lhi} ("%r1",-$frame);
+&{$z? \&stmg:\&stm} ("%r6","%r15","6*$SIZE_T($sp)");
+&{$z? \&slgr:\&slr} ($out,$inp); # difference
+ la ($len,"0($inp,$len)"); # end of input minus 64
+ larl ("%r7",".Lsigma");
+ lgr ("%r0",$sp);
+ la ($sp,"0(%r1,$sp)");
+&{$z? \&stg:\&st} ("%r0","0($sp)");
+
+ lmg ("%r8","%r11","0($key)"); # load key
+ lmg ("%r12","%r13","0($counter)"); # load counter
+ lmg ("%r6","%r7","0(%r7)"); # load sigma constant
+
+ la ("%r14","0($inp)");
+&{$z? \&stg:\&st} ($out,"$frame+3*$SIZE_T($sp)");
+&{$z? \&stg:\&st} ($len,"$frame+4*$SIZE_T($sp)");
+ stmg ("%r6","%r13","$stdframe($sp)");# copy key schedule to stack
+ srlg (@x[12],"%r12",32); # 32-bit counter value
+ j (".Loop_outer");
+
+ALIGN (16);
+LABEL (".Loop_outer");
+ lm (@x[0],@x[7],"$stdframe+4*0($sp)"); # load x[0]-x[7]
+ lm (@t[0],@t[1],"$stdframe+4*10($sp)"); # load x[10]-x[11]
+ lm (@x[13],@x[15],"$stdframe+4*13($sp)"); # load x[13]-x[15]
+ stm (@t[0],@t[1],"$stdframe+4*8+4*10($sp)");# offload x[10]-x[11]
+ lm (@t[0],@t[1],"$stdframe+4*8($sp)"); # load x[8]-x[9]
+ st (@x[12],"$stdframe+4*12($sp)"); # save counter
+&{$z? \&stg:\&st} ("%r14","$frame+2*$SIZE_T($sp)");# save input pointer
+ lhi ("%r14",10);
+ j (".Loop");
+
+ALIGN (4);
+LABEL (".Loop");
+ ROUND (0, 4, 8,12);
+ ROUND (0, 5,10,15);
+ brct ("%r14",".Loop");
+
+&{$z? \&lg:\&l} ("%r14","$frame+2*$SIZE_T($sp)");# pull input pointer
+ stm (@t[0],@t[1],"$stdframe+4*8+4*8($sp)"); # offload x[8]-x[9]
+&{$z? \&lmg:\&lm} (@t[0],@t[1],"$frame+3*$SIZE_T($sp)");
+
+ al (@x[0],"$stdframe+4*0($sp)"); # accumulate key schedule
+ al (@x[1],"$stdframe+4*1($sp)");
+ al (@x[2],"$stdframe+4*2($sp)");
+ al (@x[3],"$stdframe+4*3($sp)");
+ al (@x[4],"$stdframe+4*4($sp)");
+ al (@x[5],"$stdframe+4*5($sp)");
+ al (@x[6],"$stdframe+4*6($sp)");
+ al (@x[7],"$stdframe+4*7($sp)");
+ lrvr (@x[0],@x[0]);
+ lrvr (@x[1],@x[1]);
+ lrvr (@x[2],@x[2]);
+ lrvr (@x[3],@x[3]);
+ lrvr (@x[4],@x[4]);
+ lrvr (@x[5],@x[5]);
+ lrvr (@x[6],@x[6]);
+ lrvr (@x[7],@x[7]);
+ al (@x[12],"$stdframe+4*12($sp)");
+ al (@x[13],"$stdframe+4*13($sp)");
+ al (@x[14],"$stdframe+4*14($sp)");
+ al (@x[15],"$stdframe+4*15($sp)");
+ lrvr (@x[12],@x[12]);
+ lrvr (@x[13],@x[13]);
+ lrvr (@x[14],@x[14]);
+ lrvr (@x[15],@x[15]);
+
+ la (@t[0],"0(@t[0],%r14)"); # reconstruct output pointer
+&{$z? \&clgr:\&clr} ("%r14",@t[1]);
+ jh (".Ltail");
+
+ x (@x[0],"4*0(%r14)"); # xor with input
+ x (@x[1],"4*1(%r14)");
+ st (@x[0],"4*0(@t[0])"); # store output
+ x (@x[2],"4*2(%r14)");
+ st (@x[1],"4*1(@t[0])");
+ x (@x[3],"4*3(%r14)");
+ st (@x[2],"4*2(@t[0])");
+ x (@x[4],"4*4(%r14)");
+ st (@x[3],"4*3(@t[0])");
+ lm (@x[0],@x[3],"$stdframe+4*8+4*8($sp)"); # load x[8]-x[11]
+ x (@x[5],"4*5(%r14)");
+ st (@x[4],"4*4(@t[0])");
+ x (@x[6],"4*6(%r14)");
+ al (@x[0],"$stdframe+4*8($sp)");
+ st (@x[5],"4*5(@t[0])");
+ x (@x[7],"4*7(%r14)");
+ al (@x[1],"$stdframe+4*9($sp)");
+ st (@x[6],"4*6(@t[0])");
+ x (@x[12],"4*12(%r14)");
+ al (@x[2],"$stdframe+4*10($sp)");
+ st (@x[7],"4*7(@t[0])");
+ x (@x[13],"4*13(%r14)");
+ al (@x[3],"$stdframe+4*11($sp)");
+ st (@x[12],"4*12(@t[0])");
+ x (@x[14],"4*14(%r14)");
+ st (@x[13],"4*13(@t[0])");
+ x (@x[15],"4*15(%r14)");
+ st (@x[14],"4*14(@t[0])");
+ lrvr (@x[0],@x[0]);
+ st (@x[15],"4*15(@t[0])");
+ lrvr (@x[1],@x[1]);
+ lrvr (@x[2],@x[2]);
+ lrvr (@x[3],@x[3]);
+ lhi (@x[12],1);
+ x (@x[0],"4*8(%r14)");
+ al (@x[12],"$stdframe+4*12($sp)"); # increment counter
+ x (@x[1],"4*9(%r14)");
+ st (@x[0],"4*8(@t[0])");
+ x (@x[2],"4*10(%r14)");
+ st (@x[1],"4*9(@t[0])");
+ x (@x[3],"4*11(%r14)");
+ st (@x[2],"4*10(@t[0])");
+ st (@x[3],"4*11(@t[0])");
+
+&{$z? \&clgr:\&clr} ("%r14",@t[1]); # done yet?
+ la ("%r14","64(%r14)");
+ jl (".Loop_outer");
+
+LABEL (".Ldone");
+ xgr ("%r0","%r0");
+ xgr ("%r1","%r1");
+ xgr ("%r2","%r2");
+ xgr ("%r3","%r3");
+ stmg ("%r0","%r3","$stdframe+4*4($sp)"); # wipe key copy
+ stmg ("%r0","%r3","$stdframe+4*12($sp)");
+
+&{$z? \&lmg:\&lm} ("%r6","%r15","$frame+6*$SIZE_T($sp)");
+ br ("%r14");
+
+ALIGN (16);
+LABEL (".Ltail");
+ la (@t[1],"64($t[1])");
+ stm (@x[0],@x[7],"$stdframe+4*0($sp)");
+&{$z? \&slgr:\&slr} (@t[1],"%r14");
+ lm (@x[0],@x[3],"$stdframe+4*8+4*8($sp)");
+&{$z? \&lghi:\&lhi} (@x[6],0);
+ stm (@x[12],@x[15],"$stdframe+4*12($sp)");
+ al (@x[0],"$stdframe+4*8($sp)");
+ al (@x[1],"$stdframe+4*9($sp)");
+ al (@x[2],"$stdframe+4*10($sp)");
+ al (@x[3],"$stdframe+4*11($sp)");
+ lrvr (@x[0],@x[0]);
+ lrvr (@x[1],@x[1]);
+ lrvr (@x[2],@x[2]);
+ lrvr (@x[3],@x[3]);
+ stm (@x[0],@x[3],"$stdframe+4*8($sp)");
+
+LABEL (".Loop_tail");
+ llgc (@x[4],"0(@x[6],%r14)");
+ llgc (@x[5],"$stdframe(@x[6],$sp)");
+ xr (@x[5],@x[4]);
+ stc (@x[5],"0(@x[6],@t[0])");
+ la (@x[6],"1(@x[6])");
+ brct (@t[1],".Loop_tail");
+
+ j (".Ldone");
+SIZE ("ChaCha20_ctr32",".-ChaCha20_ctr32");
+}
+
+########################################################################
+# 4x"vertical" layout minimizes amount of instructions, but pipeline
+# runs underutilized [because of vector instructions' high latency].
+# On the other hand minimum amount of data it takes to fully utilize
+# the pipeline is higher, so that effectively, short inputs would be
+# processed slower. Hence this code path targeting <=256 bytes lengths.
+#
+{
+my ($xa0,$xa1,$xa2,$xa3, $xb0,$xb1,$xb2,$xb3,
+ $xc0,$xc1,$xc2,$xc3, $xd0,$xd1,$xd2,$xd3)=map("%v$_",(0..15));
+my @K=map("%v$_",(16..19));
+my $CTR="%v26";
+my ($xt0,$xt1,$xt2,$xt3)=map("%v$_",(27..30));
+my $beperm="%v31";
+my ($x00,$x10,$x20,$x30)=(0,map("r$_",(8..10)));
+my $FRAME=$stdframe+4*16;
+
+ALIGN (32);
+LABEL ("ChaCha20_ctr32_4x");
+LABEL (".LChaCha20_ctr32_4x");
+&{$z? \&stmg:\&stm} ("%r6","%r7","6*$SIZE_T($sp)");
+if (!$z) {
+ std ("%f4","16*$SIZE_T+2*8($sp)");
+ std ("%f6","16*$SIZE_T+3*8($sp)");
+}
+&{$z? \&lghi:\&lhi} ("%r1",-$FRAME);
+ lgr ("%r0",$sp);
+ la ($sp,"0(%r1,$sp)");
+&{$z? \&stg:\&st} ("%r0","0($sp)"); # back-chain
+if ($z) {
+ std ("%f8","$stdframe+8*0($sp)");
+ std ("%f9","$stdframe+8*1($sp)");
+ std ("%f10","$stdframe+8*2($sp)");
+ std ("%f11","$stdframe+8*3($sp)");
+ std ("%f12","$stdframe+8*4($sp)");
+ std ("%f13","$stdframe+8*5($sp)");
+ std ("%f14","$stdframe+8*6($sp)");
+ std ("%f15","$stdframe+8*7($sp)");
+}
+ larl ("%r7",".Lsigma");
+ lhi ("%r0",10);
+ lhi ("%r1",0);
+
+ vl (@K[0],"0(%r7)"); # load sigma
+ vl (@K[1],"0($key)"); # load key
+ vl (@K[2],"16($key)");
+ vl (@K[3],"0($counter)"); # load counter
+
+ vl ($beperm,"0x40(%r7)");
+ vl ($xt1,"0x50(%r7)");
+ vrepf ($CTR,@K[3],0);
+ vlvgf (@K[3],"%r1",0); # clear @K[3].word[0]
+ vaf ($CTR,$CTR,$xt1);
+
+#LABEL (".Loop_outer_4x");
+ vlm ($xa0,$xa3,"0x60(%r7)"); # load [smashed] sigma
+
+ vrepf ($xb0,@K[1],0); # smash the key
+ vrepf ($xb1,@K[1],1);
+ vrepf ($xb2,@K[1],2);
+ vrepf ($xb3,@K[1],3);
+
+ vrepf ($xc0,@K[2],0);
+ vrepf ($xc1,@K[2],1);
+ vrepf ($xc2,@K[2],2);
+ vrepf ($xc3,@K[2],3);
+
+ vlr ($xd0,$CTR);
+ vrepf ($xd1,@K[3],1);
+ vrepf ($xd2,@K[3],2);
+ vrepf ($xd3,@K[3],3);
+
+LABEL (".Loop_4x");
+ VX_lane_ROUND(0, 4, 8,12);
+ VX_lane_ROUND(0, 5,10,15);
+ brct ("%r0",".Loop_4x");
+
+ vaf ($xd0,$xd0,$CTR);
+
+ vmrhf ($xt0,$xa0,$xa1); # transpose data
+ vmrhf ($xt1,$xa2,$xa3);
+ vmrlf ($xt2,$xa0,$xa1);
+ vmrlf ($xt3,$xa2,$xa3);
+ vpdi ($xa0,$xt0,$xt1,0b0000);
+ vpdi ($xa1,$xt0,$xt1,0b0101);
+ vpdi ($xa2,$xt2,$xt3,0b0000);
+ vpdi ($xa3,$xt2,$xt3,0b0101);
+
+ vmrhf ($xt0,$xb0,$xb1);
+ vmrhf ($xt1,$xb2,$xb3);
+ vmrlf ($xt2,$xb0,$xb1);
+ vmrlf ($xt3,$xb2,$xb3);
+ vpdi ($xb0,$xt0,$xt1,0b0000);
+ vpdi ($xb1,$xt0,$xt1,0b0101);
+ vpdi ($xb2,$xt2,$xt3,0b0000);
+ vpdi ($xb3,$xt2,$xt3,0b0101);
+
+ vmrhf ($xt0,$xc0,$xc1);
+ vmrhf ($xt1,$xc2,$xc3);
+ vmrlf ($xt2,$xc0,$xc1);
+ vmrlf ($xt3,$xc2,$xc3);
+ vpdi ($xc0,$xt0,$xt1,0b0000);
+ vpdi ($xc1,$xt0,$xt1,0b0101);
+ vpdi ($xc2,$xt2,$xt3,0b0000);
+ vpdi ($xc3,$xt2,$xt3,0b0101);
+
+ vmrhf ($xt0,$xd0,$xd1);
+ vmrhf ($xt1,$xd2,$xd3);
+ vmrlf ($xt2,$xd0,$xd1);
+ vmrlf ($xt3,$xd2,$xd3);
+ vpdi ($xd0,$xt0,$xt1,0b0000);
+ vpdi ($xd1,$xt0,$xt1,0b0101);
+ vpdi ($xd2,$xt2,$xt3,0b0000);
+ vpdi ($xd3,$xt2,$xt3,0b0101);
+
+ #vrepif ($xt0,4);
+ #vaf ($CTR,$CTR,$xt0); # next counter value
+
+ vaf ($xa0,$xa0,@K[0]);
+ vaf ($xb0,$xb0,@K[1]);
+ vaf ($xc0,$xc0,@K[2]);
+ vaf ($xd0,$xd0,@K[3]);
+
+ vperm ($xa0,$xa0,$xa0,$beperm);
+ vperm ($xb0,$xb0,$xb0,$beperm);
+ vperm ($xc0,$xc0,$xc0,$beperm);
+ vperm ($xd0,$xd0,$xd0,$beperm);
+
+ #&{$z? \&clgfi:\&clfi} ($len,0x40);
+ #jl (".Ltail_4x");
+
+ vlm ($xt0,$xt3,"0($inp)");
+
+ vx ($xt0,$xt0,$xa0);
+ vx ($xt1,$xt1,$xb0);
+ vx ($xt2,$xt2,$xc0);
+ vx ($xt3,$xt3,$xd0);
+
+ vstm ($xt0,$xt3,"0($out)");
+
+ la ($inp,"0x40($inp)");
+ la ($out,"0x40($out)");
+&{$z? \&aghi:\&ahi} ($len,-0x40);
+ #je (".Ldone_4x");
+
+ vaf ($xa0,$xa1,@K[0]);
+ vaf ($xb0,$xb1,@K[1]);
+ vaf ($xc0,$xc1,@K[2]);
+ vaf ($xd0,$xd1,@K[3]);
+
+ vperm ($xa0,$xa0,$xa0,$beperm);
+ vperm ($xb0,$xb0,$xb0,$beperm);
+ vperm ($xc0,$xc0,$xc0,$beperm);
+ vperm ($xd0,$xd0,$xd0,$beperm);
+
+&{$z? \&clgfi:\&clfi} ($len,0x40);
+ jl (".Ltail_4x");
+
+ vlm ($xt0,$xt3,"0($inp)");
+
+ vx ($xt0,$xt0,$xa0);
+ vx ($xt1,$xt1,$xb0);
+ vx ($xt2,$xt2,$xc0);
+ vx ($xt3,$xt3,$xd0);
+
+ vstm ($xt0,$xt3,"0($out)");
+
+ la ($inp,"0x40($inp)");
+ la ($out,"0x40($out)");
+&{$z? \&aghi:\&ahi} ($len,-0x40);
+ je (".Ldone_4x");
+
+ vaf ($xa0,$xa2,@K[0]);
+ vaf ($xb0,$xb2,@K[1]);
+ vaf ($xc0,$xc2,@K[2]);
+ vaf ($xd0,$xd2,@K[3]);
+
+ vperm ($xa0,$xa0,$xa0,$beperm);
+ vperm ($xb0,$xb0,$xb0,$beperm);
+ vperm ($xc0,$xc0,$xc0,$beperm);
+ vperm ($xd0,$xd0,$xd0,$beperm);
+
+&{$z? \&clgfi:\&clfi} ($len,0x40);
+ jl (".Ltail_4x");
+
+ vlm ($xt0,$xt3,"0($inp)");
+
+ vx ($xt0,$xt0,$xa0);
+ vx ($xt1,$xt1,$xb0);
+ vx ($xt2,$xt2,$xc0);
+ vx ($xt3,$xt3,$xd0);
+
+ vstm ($xt0,$xt3,"0($out)");
+
+ la ($inp,"0x40($inp)");
+ la ($out,"0x40($out)");
+&{$z? \&aghi:\&ahi} ($len,-0x40);
+ je (".Ldone_4x");
+
+ vaf ($xa0,$xa3,@K[0]);
+ vaf ($xb0,$xb3,@K[1]);
+ vaf ($xc0,$xc3,@K[2]);
+ vaf ($xd0,$xd3,@K[3]);
+
+ vperm ($xa0,$xa0,$xa0,$beperm);
+ vperm ($xb0,$xb0,$xb0,$beperm);
+ vperm ($xc0,$xc0,$xc0,$beperm);
+ vperm ($xd0,$xd0,$xd0,$beperm);
+
+&{$z? \&clgfi:\&clfi} ($len,0x40);
+ jl (".Ltail_4x");
+
+ vlm ($xt0,$xt3,"0($inp)");
+
+ vx ($xt0,$xt0,$xa0);
+ vx ($xt1,$xt1,$xb0);
+ vx ($xt2,$xt2,$xc0);
+ vx ($xt3,$xt3,$xd0);
+
+ vstm ($xt0,$xt3,"0($out)");
+
+ #la $inp,0x40($inp));
+ #la $out,0x40($out));
+ #lhi %r0,10);
+ #&{$z? \&aghi:\&ahi} $len,-0x40);
+ #jne .Loop_outer_4x);
+
+LABEL (".Ldone_4x");
+if (!$z) {
+ ld ("%f4","$FRAME+16*$SIZE_T+2*8($sp)");
+ ld ("%f6","$FRAME+16*$SIZE_T+3*8($sp)");
+} else {
+ ld ("%f8","$stdframe+8*0($sp)");
+ ld ("%f9","$stdframe+8*1($sp)");
+ ld ("%f10","$stdframe+8*2($sp)");
+ ld ("%f11","$stdframe+8*3($sp)");
+ ld ("%f12","$stdframe+8*4($sp)");
+ ld ("%f13","$stdframe+8*5($sp)");
+ ld ("%f14","$stdframe+8*6($sp)");
+ ld ("%f15","$stdframe+8*7($sp)");
}
+&{$z? \&lmg:\&lm} ("%r6","%r7","$FRAME+6*$SIZE_T($sp)");
+ la ($sp,"$FRAME($sp)");
+ br ("%r14");
+
+ALIGN (16);
+LABEL (".Ltail_4x");
+if (!$z) {
+ vlr ($xt0,$xb0);
+ ld ("%f4","$FRAME+16*$SIZE_T+2*8($sp)");
+ ld ("%f6","$FRAME+16*$SIZE_T+3*8($sp)");
+
+ vst ($xa0,"$stdframe+0x00($sp)");
+ vst ($xt0,"$stdframe+0x10($sp)");
+ vst ($xc0,"$stdframe+0x20($sp)");
+ vst ($xd0,"$stdframe+0x30($sp)");
+} else {
+ vlr ($xt0,$xc0);
+ ld ("%f8","$stdframe+8*0($sp)");
+ ld ("%f9","$stdframe+8*1($sp)");
+ ld ("%f10","$stdframe+8*2($sp)");
+ ld ("%f11","$stdframe+8*3($sp)");
+ vlr ($xt1,$xd0);
+ ld ("%f12","$stdframe+8*4($sp)");
+ ld ("%f13","$stdframe+8*5($sp)");
+ ld ("%f14","$stdframe+8*6($sp)");
+ ld ("%f15","$stdframe+8*7($sp)");
-$code.=<<___;
-.text
-
-.globl ChaCha20_ctr32
-.type ChaCha20_ctr32,\@function
-.align 32
-ChaCha20_ctr32:
- lt${g}r $len,$len # $len==0?
- bzr %r14
- a${g}hi $len,-64
- l${g}hi %r1,-$frame
- stm${g} %r6,%r15,`6*$SIZE_T`($sp)
- sl${g}r $out,$inp # difference
- la $len,0($inp,$len) # end of input minus 64
- larl %r7,.Lsigma
- lgr %r0,$sp
- la $sp,0(%r1,$sp)
- st${g} %r0,0($sp)
-
- lmg %r8,%r11,0($key) # load key
- lmg %r12,%r13,0($counter) # load counter
- lmg %r6,%r7,0(%r7) # load sigma constant
-
- la %r14,0($inp)
- st${g} $out,$frame+3*$SIZE_T($sp)
- st${g} $len,$frame+4*$SIZE_T($sp)
- stmg %r6,%r13,$stdframe($sp) # copy key schedule to stack
- srlg @x[12],%r12,32 # 32-bit counter value
- j .Loop_outer
-
-.align 16
-.Loop_outer:
- lm @x[0],@x[7],$stdframe+4*0($sp) # load x[0]-x[7]
- lm @t[0],@t[1],$stdframe+4*10($sp) # load x[10]-x[11]
- lm @x[13],@x[15],$stdframe+4*13($sp) # load x[13]-x[15]
- stm @t[0],@t[1],$stdframe+4*8+4*10($sp) # offload x[10]-x[11]
- lm @t[0],@t[1],$stdframe+4*8($sp) # load x[8]-x[9]
- st @x[12],$stdframe+4*12($sp) # save counter
- st${g} %r14,$frame+2*$SIZE_T($sp) # save input pointer
- lhi %r14,10
- j .Loop
-
-.align 4
-.Loop:
-___
- foreach (&ROUND(0, 4, 8,12)) { eval; }
- foreach (&ROUND(0, 5,10,15)) { eval; }
-$code.=<<___;
- brct %r14,.Loop
-
- l${g} %r14,$frame+2*$SIZE_T($sp) # pull input pointer
- stm @t[0],@t[1],$stdframe+4*8+4*8($sp) # offload x[8]-x[9]
- lm${g} @t[0],@t[1],$frame+3*$SIZE_T($sp)
-
- al @x[0],$stdframe+4*0($sp) # accumulate key schedule
- al @x[1],$stdframe+4*1($sp)
- al @x[2],$stdframe+4*2($sp)
- al @x[3],$stdframe+4*3($sp)
- al @x[4],$stdframe+4*4($sp)
- al @x[5],$stdframe+4*5($sp)
- al @x[6],$stdframe+4*6($sp)
- al @x[7],$stdframe+4*7($sp)
- lrvr @x[0],@x[0]
- lrvr @x[1],@x[1]
- lrvr @x[2],@x[2]
- lrvr @x[3],@x[3]
- lrvr @x[4],@x[4]
- lrvr @x[5],@x[5]
- lrvr @x[6],@x[6]
- lrvr @x[7],@x[7]
- al @x[12],$stdframe+4*12($sp)
- al @x[13],$stdframe+4*13($sp)
- al @x[14],$stdframe+4*14($sp)
- al @x[15],$stdframe+4*15($sp)
- lrvr @x[12],@x[12]
- lrvr @x[13],@x[13]
- lrvr @x[14],@x[14]
- lrvr @x[15],@x[15]
-
- la @t[0],0(@t[0],%r14) # reconstruct output pointer
- cl${g}r %r14,@t[1]
- jh .Ltail
-
- x @x[0],4*0(%r14) # xor with input
- x @x[1],4*1(%r14)
- st @x[0],4*0(@t[0]) # store output
- x @x[2],4*2(%r14)
- st @x[1],4*1(@t[0])
- x @x[3],4*3(%r14)
- st @x[2],4*2(@t[0])
- x @x[4],4*4(%r14)
- st @x[3],4*3(@t[0])
- lm @x[0],@x[3],$stdframe+4*8+4*8($sp) # load x[8]-x[11]
- x @x[5],4*5(%r14)
- st @x[4],4*4(@t[0])
- x @x[6],4*6(%r14)
- al @x[0],$stdframe+4*8($sp)
- st @x[5],4*5(@t[0])
- x @x[7],4*7(%r14)
- al @x[1],$stdframe+4*9($sp)
- st @x[6],4*6(@t[0])
- x @x[12],4*12(%r14)
- al @x[2],$stdframe+4*10($sp)
- st @x[7],4*7(@t[0])
- x @x[13],4*13(%r14)
- al @x[3],$stdframe+4*11($sp)
- st @x[12],4*12(@t[0])
- x @x[14],4*14(%r14)
- st @x[13],4*13(@t[0])
- x @x[15],4*15(%r14)
- st @x[14],4*14(@t[0])
- lrvr @x[0],@x[0]
- st @x[15],4*15(@t[0])
- lrvr @x[1],@x[1]
- lrvr @x[2],@x[2]
- lrvr @x[3],@x[3]
- lhi @x[12],1
- x @x[0],4*8(%r14)
- al @x[12],$stdframe+4*12($sp) # increment counter
- x @x[1],4*9(%r14)
- st @x[0],4*8(@t[0])
- x @x[2],4*10(%r14)
- st @x[1],4*9(@t[0])
- x @x[3],4*11(%r14)
- st @x[2],4*10(@t[0])
- st @x[3],4*11(@t[0])
-
- cl${g}r %r14,@t[1] # done yet?
- la %r14,64(%r14)
- jl .Loop_outer
-
-.Ldone:
- xgr %r0,%r0
- xgr %r1,%r1
- xgr %r2,%r2
- xgr %r3,%r3
- stmg %r0,%r3,$stdframe+4*4($sp) # wipe key copy
- stmg %r0,%r3,$stdframe+4*12($sp)
-
- lm${g} %r6,%r15,`$frame+6*$SIZE_T`($sp)
- br %r14
-
-.align 16
-.Ltail:
- la @t[1],64($t[1])
- stm @x[0],@x[7],$stdframe+4*0($sp)
- sl${g}r @t[1],%r14
- lm @x[0],@x[3],$stdframe+4*8+4*8($sp)
- l${g}hi @x[6],0
- stm @x[12],@x[15],$stdframe+4*12($sp)
- al @x[0],$stdframe+4*8($sp)
- al @x[1],$stdframe+4*9($sp)
- al @x[2],$stdframe+4*10($sp)
- al @x[3],$stdframe+4*11($sp)
- lrvr @x[0],@x[0]
- lrvr @x[1],@x[1]
- lrvr @x[2],@x[2]
- lrvr @x[3],@x[3]
- stm @x[0],@x[3],$stdframe+4*8($sp)
-
-.Loop_tail:
- llgc @x[4],0(@x[6],%r14)
- llgc @x[5],$stdframe(@x[6],$sp)
- xr @x[5],@x[4]
- stc @x[5],0(@x[6],@t[0])
- la @x[6],1(@x[6])
- brct @t[1],.Loop_tail
-
- j .Ldone
-.size ChaCha20_ctr32,.-ChaCha20_ctr32
-
-.align 32
-.Lsigma:
-.long 0x61707865,0x3320646e,0x79622d32,0x6b206574 # endian-neutral
-.asciz "ChaCha20 for s390x, CRYPTOGAMS by <appro\@openssl.org>"
-.align 4
-___
-
-foreach (split("\n",$code)) {
- s/\`([^\`]*)\`/eval $1/ge;
-
- print $_,"\n";
+ vst ($xa0,"$stdframe+0x00($sp)");
+ vst ($xb0,"$stdframe+0x10($sp)");
+ vst ($xt0,"$stdframe+0x20($sp)");
+ vst ($xt1,"$stdframe+0x30($sp)");
}
-close STDOUT;
+ lghi ("%r1",0);
+
+LABEL (".Loop_tail_4x");
+ llgc ("%r5","0(%r1,$inp)");
+ llgc ("%r6","$stdframe(%r1,$sp)");
+ xr ("%r6","%r5");
+ stc ("%r6","0(%r1,$out)");
+ la ("%r1","1(%r1)");
+ brct ($len,".Loop_tail_4x");
+
+&{$z? \&lmg:\&lm} ("%r6","%r7","$FRAME+6*$SIZE_T($sp)");
+ la ($sp,"$FRAME($sp)");
+ br ("%r14");
+SIZE ("ChaCha20_ctr32_4x",".-ChaCha20_ctr32_4x");
+}
+
+########################################################################
+# 6x"horizontal" layout is optimal fit for the platform in its current
+# shape, more specifically for given vector instructions' latency. Well,
+# computational part of 8x"vertical" would be faster, but it consumes
+# all registers and dealing with that will diminish the return...
+#
+{
+my ($a0,$b0,$c0,$d0, $a1,$b1,$c1,$d1,
+ $a2,$b2,$c2,$d2, $a3,$b3,$c3,$d3,
+ $a4,$b4,$c4,$d4, $a5,$b5,$c5,$d5)=map("%v$_",(0..23));
+my @K=map("%v$_",(27,24..26));
+my ($t0,$t1,$t2,$t3)=map("%v$_",27..30);
+my $beperm="%v31";
+my $FRAME=$stdframe + 4*16;
+
+GLOBL ("ChaCha20_ctr32_vx");
+ALIGN (32);
+LABEL ("ChaCha20_ctr32_vx");
+LABEL (".LChaCha20_ctr32_vx");
+&{$z? \&clgfi:\&clfi} ($len,256);
+ jle (".LChaCha20_ctr32_4x");
+&{$z? \&stmg:\&stm} ("%r6","%r7","6*$SIZE_T($sp)");
+if (!$z) {
+ std ("%f4","16*$SIZE_T+2*8($sp)");
+ std ("%f6","16*$SIZE_T+3*8($sp)");
+}
+&{$z? \&lghi:\&lhi} ("%r1",-$FRAME);
+ lgr ("%r0",$sp);
+ la ($sp,"0(%r1,$sp)");
+&{$z? \&stg:\&st} ("%r0","0($sp)"); # back-chain
+if ($z) {
+ std ("%f8","$FRAME-8*8($sp)");
+ std ("%f9","$FRAME-8*7($sp)");
+ std ("%f10","$FRAME-8*6($sp)");
+ std ("%f11","$FRAME-8*5($sp)");
+ std ("%f12","$FRAME-8*4($sp)");
+ std ("%f13","$FRAME-8*3($sp)");
+ std ("%f14","$FRAME-8*2($sp)");
+ std ("%f15","$FRAME-8*1($sp)");
+}
+ larl ("%r7",".Lsigma");
+ lhi ("%r0",10);
+
+ vlm (@K[1],@K[2],"0($key)"); # load key
+ vl (@K[3],"0($counter)"); # load counter
+
+ vlm (@K[0],"$beperm","0(%r7)"); # load sigma, increments, ...
+
+LABEL (".Loop_outer_vx");
+ vlr ($a0,@K[0]);
+ vlr ($b0,@K[1]);
+ vlr ($a1,@K[0]);
+ vlr ($b1,@K[1]);
+ vlr ($a2,@K[0]);
+ vlr ($b2,@K[1]);
+ vlr ($a3,@K[0]);
+ vlr ($b3,@K[1]);
+ vlr ($a4,@K[0]);
+ vlr ($b4,@K[1]);
+ vlr ($a5,@K[0]);
+ vlr ($b5,@K[1]);
+
+ vlr ($d0,@K[3]);
+ vaf ($d1,@K[3],$t1); # K[3]+1
+ vaf ($d2,@K[3],$t2); # K[3]+2
+ vaf ($d3,@K[3],$t3); # K[3]+3
+ vaf ($d4,$d2,$t2); # K[3]+4
+ vaf ($d5,$d2,$t3); # K[3]+5
+
+ vlr ($c0,@K[2]);
+ vlr ($c1,@K[2]);
+ vlr ($c2,@K[2]);
+ vlr ($c3,@K[2]);
+ vlr ($c4,@K[2]);
+ vlr ($c5,@K[2]);
+
+ vlr ($t1,$d1);
+ vlr ($t2,$d2);
+ vlr ($t3,$d3);
+
+ALIGN (4);
+LABEL (".Loop_vx");
+
+ VX_ROUND($a0,$a1,$a2,$a3,$a4,$a5,
+ $b0,$b1,$b2,$b3,$b4,$b5,
+ $c0,$c1,$c2,$c3,$c4,$c5,
+ $d0,$d1,$d2,$d3,$d4,$d5,
+ 0);
+
+ VX_ROUND($a0,$a1,$a2,$a3,$a4,$a5,
+ $b0,$b1,$b2,$b3,$b4,$b5,
+ $c0,$c1,$c2,$c3,$c4,$c5,
+ $d0,$d1,$d2,$d3,$d4,$d5,
+ 1);
+
+ brct ("%r0",".Loop_vx");
+
+ vaf ($a0,$a0,@K[0]);
+ vaf ($b0,$b0,@K[1]);
+ vaf ($c0,$c0,@K[2]);
+ vaf ($d0,$d0,@K[3]);
+ vaf ($a1,$a1,@K[0]);
+ vaf ($d1,$d1,$t1); # +K[3]+1
+
+ vperm ($a0,$a0,$a0,$beperm);
+ vperm ($b0,$b0,$b0,$beperm);
+ vperm ($c0,$c0,$c0,$beperm);
+ vperm ($d0,$d0,$d0,$beperm);
+
+&{$z? \&clgfi:\&clfi} ($len,0x40);
+ jl (".Ltail_vx");
+
+ vaf ($d2,$d2,$t2); # +K[3]+2
+ vaf ($d3,$d3,$t3); # +K[3]+3
+ vlm ($t0,$t3,"0($inp)");
+
+ vx ($a0,$a0,$t0);
+ vx ($b0,$b0,$t1);
+ vx ($c0,$c0,$t2);
+ vx ($d0,$d0,$t3);
+
+ vlm (@K[0],$t3,"0(%r7)"); # re-load sigma and increments
+
+ vstm ($a0,$d0,"0($out)");
+
+ la ($inp,"0x40($inp)");
+ la ($out,"0x40($out)");
+&{$z? \&aghi:\&ahi} ($len,-0x40);
+ je (".Ldone_vx");
+
+ vaf ($b1,$b1,@K[1]);
+ vaf ($c1,$c1,@K[2]);
+
+ vperm ($a0,$a1,$a1,$beperm);
+ vperm ($b0,$b1,$b1,$beperm);
+ vperm ($c0,$c1,$c1,$beperm);
+ vperm ($d0,$d1,$d1,$beperm);
+
+&{$z? \&clgfi:\&clfi} ($len,0x40);
+ jl (".Ltail_vx");
+
+ vlm ($a1,$d1,"0($inp)");
+
+ vx ($a0,$a0,$a1);
+ vx ($b0,$b0,$b1);
+ vx ($c0,$c0,$c1);
+ vx ($d0,$d0,$d1);
+
+ vstm ($a0,$d0,"0($out)");
+
+ la ($inp,"0x40($inp)");
+ la ($out,"0x40($out)");
+&{$z? \&aghi:\&ahi} ($len,-0x40);
+ je (".Ldone_vx");
+
+ vaf ($a2,$a2,@K[0]);
+ vaf ($b2,$b2,@K[1]);
+ vaf ($c2,$c2,@K[2]);
+
+ vperm ($a0,$a2,$a2,$beperm);
+ vperm ($b0,$b2,$b2,$beperm);
+ vperm ($c0,$c2,$c2,$beperm);
+ vperm ($d0,$d2,$d2,$beperm);
+
+&{$z? \&clgfi:\&clfi} ($len,0x40);
+ jl (".Ltail_vx");
+
+ vlm ($a1,$d1,"0($inp)");
+
+ vx ($a0,$a0,$a1);
+ vx ($b0,$b0,$b1);
+ vx ($c0,$c0,$c1);
+ vx ($d0,$d0,$d1);
+
+ vstm ($a0,$d0,"0($out)");
+
+ la ($inp,"0x40($inp)");
+ la ($out,"0x40($out)");
+&{$z? \&aghi:\&ahi} ($len,-0x40);
+ je (".Ldone_vx");
+
+ vaf ($a3,$a3,@K[0]);
+ vaf ($b3,$b3,@K[1]);
+ vaf ($c3,$c3,@K[2]);
+ vaf ($d2,@K[3],$t3); # K[3]+3
+
+ vperm ($a0,$a3,$a3,$beperm);
+ vperm ($b0,$b3,$b3,$beperm);
+ vperm ($c0,$c3,$c3,$beperm);
+ vperm ($d0,$d3,$d3,$beperm);
+
+&{$z? \&clgfi:\&clfi} ($len,0x40);
+ jl (".Ltail_vx");
+
+ vaf ($d3,$d2,$t1); # K[3]+4
+ vlm ($a1,$d1,"0($inp)");
+
+ vx ($a0,$a0,$a1);
+ vx ($b0,$b0,$b1);
+ vx ($c0,$c0,$c1);
+ vx ($d0,$d0,$d1);
+
+ vstm ($a0,$d0,"0($out)");
+
+ la ($inp,"0x40($inp)");
+ la ($out,"0x40($out)");
+&{$z? \&aghi:\&ahi} ($len,-0x40);
+ je (".Ldone_vx");
+
+ vaf ($a4,$a4,@K[0]);
+ vaf ($b4,$b4,@K[1]);
+ vaf ($c4,$c4,@K[2]);
+ vaf ($d4,$d4,$d3); # +K[3]+4
+ vaf ($d3,$d3,$t1); # K[3]+5
+ vaf (@K[3],$d2,$t3); # K[3]+=6
+
+ vperm ($a0,$a4,$a4,$beperm);
+ vperm ($b0,$b4,$b4,$beperm);
+ vperm ($c0,$c4,$c4,$beperm);
+ vperm ($d0,$d4,$d4,$beperm);
+
+&{$z? \&clgfi:\&clfi} ($len,0x40);
+ jl (".Ltail_vx");
+
+ vlm ($a1,$d1,"0($inp)");
+
+ vx ($a0,$a0,$a1);
+ vx ($b0,$b0,$b1);
+ vx ($c0,$c0,$c1);
+ vx ($d0,$d0,$d1);
+
+ vstm ($a0,$d0,"0($out)");
+
+ la ($inp,"0x40($inp)");
+ la ($out,"0x40($out)");
+&{$z? \&aghi:\&ahi} ($len,-0x40);
+ je (".Ldone_vx");
+
+ vaf ($a5,$a5,@K[0]);
+ vaf ($b5,$b5,@K[1]);
+ vaf ($c5,$c5,@K[2]);
+ vaf ($d5,$d5,$d3); # +K[3]+5
+
+ vperm ($a0,$a5,$a5,$beperm);
+ vperm ($b0,$b5,$b5,$beperm);
+ vperm ($c0,$c5,$c5,$beperm);
+ vperm ($d0,$d5,$d5,$beperm);
+
+&{$z? \&clgfi:\&clfi} ($len,0x40);
+ jl (".Ltail_vx");
+
+ vlm ($a1,$d1,"0($inp)");
+
+ vx ($a0,$a0,$a1);
+ vx ($b0,$b0,$b1);
+ vx ($c0,$c0,$c1);
+ vx ($d0,$d0,$d1);
+
+ vstm ($a0,$d0,"0($out)");
+
+ la ($inp,"0x40($inp)");
+ la ($out,"0x40($out)");
+ lhi ("%r0",10);
+&{$z? \&aghi:\&ahi} ($len,-0x40);
+ jne (".Loop_outer_vx");
+
+LABEL (".Ldone_vx");
+if (!$z) {
+ ld ("%f4","$FRAME+16*$SIZE_T+2*8($sp)");
+ ld ("%f6","$FRAME+16*$SIZE_T+3*8($sp)");
+} else {
+ ld ("%f8","$FRAME-8*8($sp)");
+ ld ("%f9","$FRAME-8*7($sp)");
+ ld ("%f10","$FRAME-8*6($sp)");
+ ld ("%f11","$FRAME-8*5($sp)");
+ ld ("%f12","$FRAME-8*4($sp)");
+ ld ("%f13","$FRAME-8*3($sp)");
+ ld ("%f14","$FRAME-8*2($sp)");
+ ld ("%f15","$FRAME-8*1($sp)");
+}
+&{$z? \&lmg:\&lm} ("%r6","%r7","$FRAME+6*$SIZE_T($sp)");
+ la ($sp,"$FRAME($sp)");
+ br ("%r14");
+
+ALIGN (16);
+LABEL (".Ltail_vx");
+if (!$z) {
+ ld ("%f4","$FRAME+16*$SIZE_T+2*8($sp)");
+ ld ("%f6","$FRAME+16*$SIZE_T+3*8($sp)");
+} else {
+ ld ("%f8","$FRAME-8*8($sp)");
+ ld ("%f9","$FRAME-8*7($sp)");
+ ld ("%f10","$FRAME-8*6($sp)");
+ ld ("%f11","$FRAME-8*5($sp)");
+ ld ("%f12","$FRAME-8*4($sp)");
+ ld ("%f13","$FRAME-8*3($sp)");
+ ld ("%f14","$FRAME-8*2($sp)");
+ ld ("%f15","$FRAME-8*1($sp)");
+}
+ vstm ($a0,$d0,"$stdframe($sp)");
+ lghi ("%r1",0);
+
+LABEL (".Loop_tail_vx");
+ llgc ("%r5","0(%r1,$inp)");
+ llgc ("%r6","$stdframe(%r1,$sp)");
+ xr ("%r6","%r5");
+ stc ("%r6","0(%r1,$out)");
+ la ("%r1","1(%r1)");
+ brct ($len,".Loop_tail_vx");
+
+&{$z? \&lmg:\&lm} ("%r6","%r7","$FRAME+6*$SIZE_T($sp)");
+ la ($sp,"$FRAME($sp)");
+ br ("%r14");
+SIZE ("ChaCha20_ctr32_vx",".-ChaCha20_ctr32_vx");
+}
+################
+
+ALIGN (32);
+LABEL (".Lsigma");
+LONG (0x61707865,0x3320646e,0x79622d32,0x6b206574); # endian-neutral sigma
+LONG (1,0,0,0);
+LONG (2,0,0,0);
+LONG (3,0,0,0);
+LONG (0x03020100,0x07060504,0x0b0a0908,0x0f0e0d0c); # byte swap
+
+LONG (0,1,2,3);
+LONG (0x61707865,0x61707865,0x61707865,0x61707865); # smashed sigma
+LONG (0x3320646e,0x3320646e,0x3320646e,0x3320646e);
+LONG (0x79622d32,0x79622d32,0x79622d32,0x79622d32);
+LONG (0x6b206574,0x6b206574,0x6b206574,0x6b206574);
+
+ASCIZ ("\"ChaCha20 for s390x, CRYPTOGAMS by <appro\@openssl.org>\"");
+ALIGN (4);
+
+PERLASM_END();
projects / openssl.git / blobdiff