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openSUSE:Step:15-SP2
openssl-1_1.32466
0002-crypto-chacha-asm-chacha-s390x.pl-add-vx-c...
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File 0002-crypto-chacha-asm-chacha-s390x.pl-add-vx-code-path.patch of Package openssl-1_1.32466
From f760137b2144740916afd9ff381451fa16c710de Mon Sep 17 00:00:00 2001 From: Patrick Steuer <patrick.steuer@de.ibm.com> Date: Sat, 4 Aug 2018 00:10:06 +0200 Subject: [PATCH] crypto/chacha/asm/chacha-s390x.pl: add vx code path. Signed-off-by: Patrick Steuer <patrick.steuer@de.ibm.com> Reviewed-by: Tim Hudson <tjh@openssl.org> Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/6919) --- crypto/chacha/asm/chacha-s390x.pl | 816 ++++++++++++++++++++---------- crypto/chacha/build.info | 1 + 2 files changed, 558 insertions(+), 259 deletions(-) Index: openssl-1.1.1c/crypto/chacha/asm/chacha-s390x.pl =================================================================== --- openssl-1.1.1c.orig/crypto/chacha/asm/chacha-s390x.pl 2019-06-06 12:15:57.271195550 +0200 +++ openssl-1.1.1c/crypto/chacha/asm/chacha-s390x.pl 2019-06-06 12:16:43.787489780 +0200 @@ -1,5 +1,5 @@ #! /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 OpenSSL license (the "License"). You may not use # this file except in compliance with the License. You can obtain a copy @@ -20,41 +20,46 @@ # # 3 times faster than compiler-generated code. -$flavour = shift; +# +# August 2018 +# +# Add vx code path. +# +# Copyright IBM Corp. 2018 +# Author: Patrick Steuer <patrick.steuer@de.ibm.com> + +use strict; +use FindBin qw($Bin); +use lib "$Bin/../.."; +use perlasm::s390x qw(:DEFAULT :VX AUTOLOAD LABEL 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)); my @x=map("%r$_",(0..7,"x","x","x","x",(10..13))); my @t=map("%r$_",(8,9)); +my @v=map("%v$_",(16..31)); sub ROUND { my ($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: @@ -78,249 +83,542 @@ my @x=map("\"$_\"",@x); # 'c' stores and loads in the middle, but none in the beginning # or end. - ( - "&alr (@x[$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[$b3],7)" - ); -} - -$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 -___ + 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_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)); + + vaf (@v[$a0],@v[$a0],@v[$b0]); + vaf (@v[$a1],@v[$a1],@v[$b1]); + vaf (@v[$a2],@v[$a2],@v[$b2]); + vaf (@v[$a3],@v[$a3],@v[$b3]); + vx (@v[$d0],@v[$d0],@v[$a0]); + vx (@v[$d1],@v[$d1],@v[$a1]); + vx (@v[$d2],@v[$d2],@v[$a2]); + vx (@v[$d3],@v[$d3],@v[$a3]); + verllf (@v[$d0],@v[$d0],16); + verllf (@v[$d1],@v[$d1],16); + verllf (@v[$d2],@v[$d2],16); + verllf (@v[$d3],@v[$d3],16); + + vaf (@v[$c0],@v[$c0],@v[$d0]); + vaf (@v[$c1],@v[$c1],@v[$d1]); + vaf (@v[$c2],@v[$c2],@v[$d2]); + vaf (@v[$c3],@v[$c3],@v[$d3]); + vx (@v[$b0],@v[$b0],@v[$c0]); + vx (@v[$b1],@v[$b1],@v[$c1]); + vx (@v[$b2],@v[$b2],@v[$c2]); + vx (@v[$b3],@v[$b3],@v[$c3]); + verllf (@v[$b0],@v[$b0],12); + verllf (@v[$b1],@v[$b1],12); + verllf (@v[$b2],@v[$b2],12); + verllf (@v[$b3],@v[$b3],12); + + vaf (@v[$a0],@v[$a0],@v[$b0]); + vaf (@v[$a1],@v[$a1],@v[$b1]); + vaf (@v[$a2],@v[$a2],@v[$b2]); + vaf (@v[$a3],@v[$a3],@v[$b3]); + vx (@v[$d0],@v[$d0],@v[$a0]); + vx (@v[$d1],@v[$d1],@v[$a1]); + vx (@v[$d2],@v[$d2],@v[$a2]); + vx (@v[$d3],@v[$d3],@v[$a3]); + verllf (@v[$d0],@v[$d0],8); + verllf (@v[$d1],@v[$d1],8); + verllf (@v[$d2],@v[$d2],8); + verllf (@v[$d3],@v[$d3],8); + + vaf (@v[$c0],@v[$c0],@v[$d0]); + vaf (@v[$c1],@v[$c1],@v[$d1]); + vaf (@v[$c2],@v[$c2],@v[$d2]); + vaf (@v[$c3],@v[$c3],@v[$d3]); + vx (@v[$b0],@v[$b0],@v[$c0]); + vx (@v[$b1],@v[$b1],@v[$c1]); + vx (@v[$b2],@v[$b2],@v[$c2]); + vx (@v[$b3],@v[$b3],@v[$c3]); + verllf (@v[$b0],@v[$b0],7); + verllf (@v[$b1],@v[$b1],7); + verllf (@v[$b2],@v[$b2],7); + verllf (@v[$b3],@v[$b3],7); +} + +PERLASM_BEGIN($output); -foreach (split("\n",$code)) { - s/\`([^\`]*)\`/eval $1/ge; +INCLUDE ("s390x_arch.h"); +TEXT (); - print $_,"\n"; +################ +# void ChaCha20_ctr32(unsigned char *out, const unsigned char *inp, size_t len, +# const unsigned int key[8], const unsigned int counter[4]) +{ +my ($out,$inp,$len,$key,$counter)=map("%r$_",(2..6)); + +# VX CODE PATH +{ +my $off=$z*8*16+8; # offset(initial state) +my $frame=$stdframe+4*16+$off; + +GLOBL ("ChaCha20_ctr32"); +TYPE ("ChaCha20_ctr32","\@function"); +ALIGN (32); +LABEL ("ChaCha20_ctr32"); + larl ("%r1","OPENSSL_s390xcap_P"); + + lghi ("%r0",64); +&{$z? \&cgr:\&cr} ($len,"%r0"); + jle ("_s390x_chacha_novx"); + + lg ("%r0","S390X_STFLE+16(%r1)"); + tmhh ("%r0",0x4000); # check for vector facility + jz ("_s390x_chacha_novx"); + +if (!$z) { + llgfr ($len,$len); + std ("%f4","16*$SIZE_T+2*8($sp)"); + std ("%f6","16*$SIZE_T+3*8($sp)"); +} +&{$z? \&stmg:\&stm} ("%r6","%r7","6*$SIZE_T($sp)"); + + lghi ("%r1",-$frame); + lgr ("%r0",$sp); + la ($sp,"0(%r1,$sp)"); # allocate stack frame + + larl ("%r7",".Lsigma"); +&{$z? \&stg:\&st} ("%r0","0($sp)"); # backchain + + vstm ("%v8","%v15","8($sp)") if ($z); + + vlm ("%v1","%v2","0($key)"); # load key + vl ("%v0","0(%r7)"); # load sigma constant + vl ("%v3","0($counter)"); # load iv (counter||nonce) + l ("%r0","0($counter)"); # load counter + vstm ("%v0","%v3","$off($sp)"); # copy initial state to stack + + srlg ("%r1",$len,8); + ltgr ("%r1","%r1"); + jz (".Lvx_4x_done"); + +ALIGN (16); # process 4 64-byte blocks +LABEL (".Lvx_4x"); + vlrepf ("%v$_",($_*4)."+$off($sp)") for (0..15); # load initial + # state + vl ("%v31","16(%r7)"); + vaf ("%v12","%v12","%v31"); # increment counter + + vlr (@v[$_],"%v$_") for (0..15); # copy initial state + + lhi ("%r6",10); + j (".Loop_vx_4x"); + +ALIGN (16); +LABEL (".Loop_vx_4x"); + VX_ROUND( 0, 4, 8,12); # column round + VX_ROUND( 0, 5,10,15); # diagonal round + brct ("%r6",".Loop_vx_4x"); + + vaf (@v[$_],@v[$_],"%v$_") for (0..15); # state += initial + # state (mod 32) + vlm ("%v6","%v7","32(%r7)"); # load vperm operands + +for (0..3) { # blocks 1,2 + vmrhf ("%v0",@v[$_*4+0],@v[$_*4+1]); # ks = serialize(state) + vmrhf ("%v1",@v[$_*4+2],@v[$_*4+3]); + vperm ("%v".($_+ 8),"%v0","%v1","%v6"); + vperm ("%v".($_+12),"%v0","%v1","%v7"); +} + vlm ("%v0","%v7","0($inp)"); # load in + vx ("%v$_","%v$_","%v".($_+8)) for (0..7); # out = in ^ ks + vstm ("%v0","%v7","0($out)"); # store out + + vlm ("%v6","%v7","32(%r7)"); # restore vperm operands + +for (0..3) { # blocks 2,3 + vmrlf ("%v0",@v[$_*4+0],@v[$_*4+1]); # ks = serialize(state) + vmrlf ("%v1",@v[$_*4+2],@v[$_*4+3]); + vperm ("%v".($_+ 8),"%v0","%v1","%v6"); + vperm ("%v".($_+12),"%v0","%v1","%v7"); +} + vlm ("%v0","%v7","128($inp)"); # load in + vx ("%v$_","%v$_","%v".($_+8)) for (0..7); # out = in ^ ks + vstm ("%v0","%v7","128($out)"); # store out + + ahi ("%r0",4); + st ("%r0","48+$off($sp)"); # update initial state + + la ($inp,"256($inp)"); + la ($out,"256($out)"); + brctg ("%r1",".Lvx_4x"); + +ALIGN (16); +LABEL (".Lvx_4x_done"); + lghi ("%r1",0xff); + ngr ($len,"%r1"); + jnz (".Lvx_rem"); + +ALIGN (16); +LABEL (".Lvx_done"); + vzero ("%v$_") for (16..31); # wipe ks and key copy + vstm ("%v16","%v17","16+$off($sp)"); + vlm ("%v8","%v15","8($sp)") if ($z); + + la ($sp,"$frame($sp)"); +&{$z? \&lmg:\&lm} ("%r6","%r7","6*$SIZE_T($sp)"); + +if (!$z) { + ld ("%f4","16*$SIZE_T+2*8($sp)"); + ld ("%f6","16*$SIZE_T+3*8($sp)"); + vzero ("%v$_") for (8..15); +} + br ("%r14"); +ALIGN (16); +LABEL (".Lvx_rem"); + lhi ("%r0",64); + + sr ($len,"%r0"); + brc (2,".Lvx_rem_g64"); # cc==2? + + lghi ("%r1",-$stdframe); + + la ($counter,"48+$off($sp)"); # load updated iv + ar ($len,"%r0"); # restore len + + lgr ("%r7",$counter); +&{$z? \&stg:\&st} ("%r14","14*$SIZE_T+$frame($sp)"); + la ($sp,"0(%r1,$sp)"); + + bras ("%r14","_s390x_chacha_novx"); + + la ($sp,"$stdframe($sp)"); +&{$z? \&lg:\&l} ("%r14","14*$SIZE_T+$frame($sp)"); + lgr ($counter,"%r7"); + j (".Lvx_done"); + +ALIGN (16); +LABEL (".Lvx_rem_g64"); + vlrepf ("%v$_",($_*4)."+$off($sp)") for (0..15); # load initial + # state + vl ("%v31","16(%r7)"); + vaf ("%v12","%v12","%v31"); # increment counter + + vlr (@v[$_],"%v$_") for (0..15); # state = initial state + + lhi ("%r6",10); + j (".Loop_vx_rem"); + +ALIGN (16); +LABEL (".Loop_vx_rem"); + VX_ROUND( 0, 4, 8,12); # column round + VX_ROUND( 0, 5,10,15); # diagonal round + brct ("%r6",".Loop_vx_rem"); + + vaf (@v[$_],@v[$_],"%v$_") for (0..15); # state += initial + # state (mod 32) + vlm ("%v6","%v7","32(%r7)"); # load vperm operands + +for (0..3) { # blocks 1,2 + vmrhf ("%v0",@v[$_*4+0],@v[$_*4+1]); # ks = serialize(state) + vmrhf ("%v1",@v[$_*4+2],@v[$_*4+3]); + vperm ("%v".($_+8),"%v0","%v1","%v6"); + vperm ("%v".($_+12),"%v0","%v1","%v7"); +} + vlm ("%v0","%v3","0($inp)"); # load in + vx ("%v$_","%v$_","%v".($_+8)) for (0..3); # out = in ^ ks + vstm ("%v0","%v3","0($out)"); # store out + + la ($inp,"64($inp)"); + la ($out,"64($out)"); + + sr ($len,"%r0"); + brc (4,".Lvx_tail"); # cc==4? + + vlm ("%v0","%v3","0($inp)"); # load in + vx ("%v$_","%v$_","%v".($_+12)) for (0..3); # out = in ^ ks + vstm ("%v0","%v3","0($out)"); # store out + jz (".Lvx_done"); + +for (0..3) { # blocks 3,4 + vmrlf ("%v0",@v[$_*4+0],@v[$_*4+1]); # ks = serialize(state) + vmrlf ("%v1",@v[$_*4+2],@v[$_*4+3]); + vperm ("%v".($_+12),"%v0","%v1","%v6"); + vperm ("%v".($_+8),"%v0","%v1","%v7"); +} + la ($inp,"64($inp)"); + la ($out,"64($out)"); + + sr ($len,"%r0"); + brc (4,".Lvx_tail"); # cc==4? + + vlm ("%v0","%v3","0($inp)"); # load in + vx ("%v$_","%v$_","%v".($_+12)) for (0..3); # out = in ^ ks + vstm ("%v0","%v3","0($out)"); # store out + jz (".Lvx_done"); + + la ($inp,"64($inp)"); + la ($out,"64($out)"); + + sr ($len,"%r0"); + vlr ("%v".($_+4),"%v$_") for (8..11); + j (".Lvx_tail"); + +ALIGN (16); +LABEL (".Lvx_tail"); + ar ($len,"%r0"); # restore $len + ahi ($len,-1); + + lhi ("%r0",16); +for (0..2) { + vll ("%v0",$len,($_*16)."($inp)"); + vx ("%v0","%v0","%v".($_+12)); + vstl ("%v0",$len,($_*16)."($out)"); + sr ($len,"%r0"); + brc (4,".Lvx_done"); # cc==4? +} + vll ("%v0",$len,"3*16($inp)"); + vx ("%v0","%v0","%v15"); + vstl ("%v0",$len,"3*16($out)"); + j (".Lvx_done"); +SIZE ("ChaCha20_ctr32",".-ChaCha20_ctr32"); +} + +# NOVX CODE PATH +{ +my $frame=$stdframe+4*20; + +TYPE ("_s390x_chacha_novx","\@function"); +ALIGN (32); +LABEL ("_s390x_chacha_novx"); +&{$z? \<gr:\<r} ($len,$len); # $len==0? + bzr ("%r14"); +&{$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 ("_s390x_chacha_novx",".-_s390x_chacha_novx"); +} } -close STDOUT; +################ + +ALIGN (64); +LABEL (".Lsigma"); +LONG (0x61707865,0x3320646e,0x79622d32,0x6b206574); # endian-neutral sigma +LONG (0x00000000,0x00000001,0x00000002,0x00000003); # vaf counter increment +LONG (0x03020100,0x07060504,0x13121110,0x17161514); # vperm serialization +LONG (0x0b0a0908,0x0f0e0d0c,0x1b1a1918,0x1f1e1d1c); # vperm serialization +ASCIZ ("\"ChaCha20 for s390x, CRYPTOGAMS by <appro\@openssl.org>\""); +ALIGN (4); + +PERLASM_END();
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