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| #!/usr/bin/env perl
| # Copyright 2017-2020 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/.
| # ====================================================================
| #
| # Keccak-1600 for s390x.
| #
| # June 2017.
| #
| # Below code is [lane complementing] KECCAK_2X implementation (see
| # sha/keccak1600.c) with C[5] and D[5] held in register bank. Though
| # instead of actually unrolling the loop pair-wise I simply flip
| # pointers to T[][] and A[][] at the end of round. Since number of
| # rounds is even, last round writes to A[][] and everything works out.
| # In the nutshell it's transliteration of x86_64 module, because both
| # architectures have similar capabilities/limitations. Performance
| # measurement is problematic as I don't have access to an idle system.
| # It looks like z13 processes one byte [out of long message] in ~14
| # cycles. At least the result is consistent with estimate based on
| # amount of instruction and assumed instruction issue rate. It's ~2.5x
| # faster than compiler-generated code.
|
| $flavour = shift;
|
| if ($flavour =~ /3[12]/) {
| $SIZE_T=4;
| $g="";
| } else {
| $SIZE_T=8;
| $g="g";
| }
|
| while (($output=shift) && ($output!~/\w[\w\-]*\.\w+$/)) {}
| open STDOUT,">$output";
|
| my @A = map([ 8*$_, 8*($_+1), 8*($_+2), 8*($_+3), 8*($_+4) ], (0,5,10,15,20));
|
| my @C = map("%r$_",(0,1,5..7));
| my @D = map("%r$_",(8..12));
| my @T = map("%r$_",(13..14));
| my ($src,$dst,$iotas) = map("%r$_",(2..4));
| my $sp = "%r15";
|
| $stdframe=16*$SIZE_T+4*8;
| $frame=$stdframe+25*8;
|
| my @rhotates = ([ 0, 1, 62, 28, 27 ],
| [ 36, 44, 6, 55, 20 ],
| [ 3, 10, 43, 25, 39 ],
| [ 41, 45, 15, 21, 8 ],
| [ 18, 2, 61, 56, 14 ]);
|
| { my @C = @C; # copy, because we mess them up...
| my @D = @D;
|
| $code.=<<___;
| .text
|
| .type __KeccakF1600,\@function
| .align 32
| __KeccakF1600:
| st${g} %r14,$SIZE_T*14($sp)
| lg @C[0],$A[4][0]($src)
| lg @C[1],$A[4][1]($src)
| lg @C[2],$A[4][2]($src)
| lg @C[3],$A[4][3]($src)
| lg @C[4],$A[4][4]($src)
| larl $iotas,iotas
| j .Loop
|
| .align 16
| .Loop:
| lg @D[0],$A[0][0]($src)
| lg @D[1],$A[1][1]($src)
| lg @D[2],$A[2][2]($src)
| lg @D[3],$A[3][3]($src)
|
| xgr @C[0],@D[0]
| xg @C[1],$A[0][1]($src)
| xg @C[2],$A[0][2]($src)
| xg @C[3],$A[0][3]($src)
| lgr @D[4],@C[4]
| xg @C[4],$A[0][4]($src)
|
| xg @C[0],$A[1][0]($src)
| xgr @C[1],@D[1]
| xg @C[2],$A[1][2]($src)
| xg @C[3],$A[1][3]($src)
| xg @C[4],$A[1][4]($src)
|
| xg @C[0],$A[2][0]($src)
| xg @C[1],$A[2][1]($src)
| xgr @C[2],@D[2]
| xg @C[3],$A[2][3]($src)
| xg @C[4],$A[2][4]($src)
|
| xg @C[0],$A[3][0]($src)
| xg @C[1],$A[3][1]($src)
| xg @C[2],$A[3][2]($src)
| xgr @C[3],@D[3]
| xg @C[4],$A[3][4]($src)
|
| lgr @T[0],@C[2]
| rllg @C[2],@C[2],1
| xgr @C[2],@C[0] # D[1] = ROL64(C[2], 1) ^ C[0]
|
| rllg @C[0],@C[0],1
| xgr @C[0],@C[3] # D[4] = ROL64(C[0], 1) ^ C[3]
|
| rllg @C[3],@C[3],1
| xgr @C[3],@C[1] # D[2] = ROL64(C[3], 1) ^ C[1]
|
| rllg @C[1],@C[1],1
| xgr @C[1],@C[4] # D[0] = ROL64(C[1], 1) ^ C[4]
|
| rllg @C[4],@C[4],1
| xgr @C[4],@T[0] # D[3] = ROL64(C[4], 1) ^ C[2]
| ___
| (@D[0..4], @C) = (@C[1..4,0], @D);
| $code.=<<___;
| xgr @C[1],@D[1]
| xgr @C[2],@D[2]
| xgr @C[3],@D[3]
| rllg @C[1],@C[1],$rhotates[1][1]
| xgr @C[4],@D[4]
| rllg @C[2],@C[2],$rhotates[2][2]
| xgr @C[0],@D[0]
|
| lgr @T[0],@C[1]
| ogr @C[1],@C[2]
| rllg @C[3],@C[3],$rhotates[3][3]
| xgr @C[1],@C[0] # C[0] ^ ( C[1] | C[2])
| rllg @C[4],@C[4],$rhotates[4][4]
| xg @C[1],0($iotas)
| la $iotas,8($iotas)
| stg @C[1],$A[0][0]($dst) # R[0][0] = C[0] ^ ( C[1] | C[2]) ^ iotas[i]
|
| lgr @T[1],@C[4]
| ngr @C[4],@C[3]
| lghi @C[1],-1 # no 'not' instruction :-(
| xgr @C[4],@C[2] # C[2] ^ ( C[4] & C[3])
| xgr @C[2],@C[1] # not @C[2]
| stg @C[4],$A[0][2]($dst) # R[0][2] = C[2] ^ ( C[4] & C[3])
| ogr @C[2],@C[3]
| xgr @C[2],@T[0] # C[1] ^ (~C[2] | C[3])
|
| ngr @T[0],@C[0]
| stg @C[2],$A[0][1]($dst) # R[0][1] = C[1] ^ (~C[2] | C[3])
| xgr @T[0],@T[1] # C[4] ^ ( C[1] & C[0])
| ogr @T[1],@C[0]
| stg @T[0],$A[0][4]($dst) # R[0][4] = C[4] ^ ( C[1] & C[0])
| xgr @T[1],@C[3] # C[3] ^ ( C[4] | C[0])
| stg @T[1],$A[0][3]($dst) # R[0][3] = C[3] ^ ( C[4] | C[0])
|
|
| lg @C[0],$A[0][3]($src)
| lg @C[4],$A[4][2]($src)
| lg @C[3],$A[3][1]($src)
| lg @C[1],$A[1][4]($src)
| lg @C[2],$A[2][0]($src)
|
| xgr @C[0],@D[3]
| xgr @C[4],@D[2]
| rllg @C[0],@C[0],$rhotates[0][3]
| xgr @C[3],@D[1]
| rllg @C[4],@C[4],$rhotates[4][2]
| xgr @C[1],@D[4]
| rllg @C[3],@C[3],$rhotates[3][1]
| xgr @C[2],@D[0]
|
| lgr @T[0],@C[0]
| ogr @C[0],@C[4]
| rllg @C[1],@C[1],$rhotates[1][4]
| xgr @C[0],@C[3] # C[3] ^ (C[0] | C[4])
| rllg @C[2],@C[2],$rhotates[2][0]
| stg @C[0],$A[1][3]($dst) # R[1][3] = C[3] ^ (C[0] | C[4])
|
| lgr @T[1],@C[1]
| ngr @C[1],@T[0]
| lghi @C[0],-1 # no 'not' instruction :-(
| xgr @C[1],@C[4] # C[4] ^ (C[1] & C[0])
| xgr @C[4],@C[0] # not @C[4]
| stg @C[1],$A[1][4]($dst) # R[1][4] = C[4] ^ (C[1] & C[0])
|
| ogr @C[4],@C[3]
| xgr @C[4],@C[2] # C[2] ^ (~C[4] | C[3])
|
| ngr @C[3],@C[2]
| stg @C[4],$A[1][2]($dst) # R[1][2] = C[2] ^ (~C[4] | C[3])
| xgr @C[3],@T[1] # C[1] ^ (C[3] & C[2])
| ogr @T[1],@C[2]
| stg @C[3],$A[1][1]($dst) # R[1][1] = C[1] ^ (C[3] & C[2])
| xgr @T[1],@T[0] # C[0] ^ (C[1] | C[2])
| stg @T[1],$A[1][0]($dst) # R[1][0] = C[0] ^ (C[1] | C[2])
|
|
| lg @C[2],$A[2][3]($src)
| lg @C[3],$A[3][4]($src)
| lg @C[1],$A[1][2]($src)
| lg @C[4],$A[4][0]($src)
| lg @C[0],$A[0][1]($src)
|
| xgr @C[2],@D[3]
| xgr @C[3],@D[4]
| rllg @C[2],@C[2],$rhotates[2][3]
| xgr @C[1],@D[2]
| rllg @C[3],@C[3],$rhotates[3][4]
| xgr @C[4],@D[0]
| rllg @C[1],@C[1],$rhotates[1][2]
| xgr @C[0],@D[1]
|
| lgr @T[0],@C[2]
| ngr @C[2],@C[3]
| rllg @C[4],@C[4],$rhotates[4][0]
| xgr @C[2],@C[1] # C[1] ^ ( C[2] & C[3])
| lghi @T[1],-1 # no 'not' instruction :-(
| stg @C[2],$A[2][1]($dst) # R[2][1] = C[1] ^ ( C[2] & C[3])
|
| xgr @C[3],@T[1] # not @C[3]
| lgr @T[1],@C[4]
| ngr @C[4],@C[3]
| rllg @C[0],@C[0],$rhotates[0][1]
| xgr @C[4],@T[0] # C[2] ^ ( C[4] & ~C[3])
| ogr @T[0],@C[1]
| stg @C[4],$A[2][2]($dst) # R[2][2] = C[2] ^ ( C[4] & ~C[3])
| xgr @T[0],@C[0] # C[0] ^ ( C[2] | C[1])
|
| ngr @C[1],@C[0]
| stg @T[0],$A[2][0]($dst) # R[2][0] = C[0] ^ ( C[2] | C[1])
| xgr @C[1],@T[1] # C[4] ^ ( C[1] & C[0])
| ogr @C[0],@T[1]
| stg @C[1],$A[2][4]($dst) # R[2][4] = C[4] ^ ( C[1] & C[0])
| xgr @C[0],@C[3] # ~C[3] ^ ( C[0] | C[4])
| stg @C[0],$A[2][3]($dst) # R[2][3] = ~C[3] ^ ( C[0] | C[4])
|
|
| lg @C[2],$A[2][1]($src)
| lg @C[3],$A[3][2]($src)
| lg @C[1],$A[1][0]($src)
| lg @C[4],$A[4][3]($src)
| lg @C[0],$A[0][4]($src)
|
| xgr @C[2],@D[1]
| xgr @C[3],@D[2]
| rllg @C[2],@C[2],$rhotates[2][1]
| xgr @C[1],@D[0]
| rllg @C[3],@C[3],$rhotates[3][2]
| xgr @C[4],@D[3]
| rllg @C[1],@C[1],$rhotates[1][0]
| xgr @C[0],@D[4]
| rllg @C[4],@C[4],$rhotates[4][3]
|
| lgr @T[0],@C[2]
| ogr @C[2],@C[3]
| lghi @T[1],-1 # no 'not' instruction :-(
| xgr @C[2],@C[1] # C[1] ^ ( C[2] | C[3])
| xgr @C[3],@T[1] # not @C[3]
| stg @C[2],$A[3][1]($dst) # R[3][1] = C[1] ^ ( C[2] | C[3])
|
| lgr @T[1],@C[4]
| ogr @C[4],@C[3]
| rllg @C[0],@C[0],$rhotates[0][4]
| xgr @C[4],@T[0] # C[2] ^ ( C[4] | ~C[3])
| ngr @T[0],@C[1]
| stg @C[4],$A[3][2]($dst) # R[3][2] = C[2] ^ ( C[4] | ~C[3])
| xgr @T[0],@C[0] # C[0] ^ ( C[2] & C[1])
|
| ogr @C[1],@C[0]
| stg @T[0],$A[3][0]($dst) # R[3][0] = C[0] ^ ( C[2] & C[1])
| xgr @C[1],@T[1] # C[4] ^ ( C[1] | C[0])
| ngr @C[0],@T[1]
| stg @C[1],$A[3][4]($dst) # R[3][4] = C[4] ^ ( C[1] | C[0])
| xgr @C[0],@C[3] # ~C[3] ^ ( C[0] & C[4])
| stg @C[0],$A[3][3]($dst) # R[3][3] = ~C[3] ^ ( C[0] & C[4])
|
|
| xg @D[2],$A[0][2]($src)
| xg @D[3],$A[1][3]($src)
| xg @D[1],$A[4][1]($src)
| xg @D[4],$A[2][4]($src)
| xgr $dst,$src # xchg $dst,$src
| rllg @D[2],@D[2],$rhotates[0][2]
| xg @D[0],$A[3][0]($src)
| rllg @D[3],@D[3],$rhotates[1][3]
| xgr $src,$dst
| rllg @D[1],@D[1],$rhotates[4][1]
| xgr $dst,$src
| rllg @D[4],@D[4],$rhotates[2][4]
| ___
| @C = @D[2..4,0,1];
| $code.=<<___;
| lgr @T[0],@C[0]
| ngr @C[0],@C[1]
| lghi @T[1],-1 # no 'not' instruction :-(
| xgr @C[0],@C[4] # C[4] ^ ( C[0] & C[1])
| xgr @C[1],@T[1] # not @C[1]
| stg @C[0],$A[4][4]($src) # R[4][4] = C[4] ^ ( C[0] & C[1])
|
| lgr @T[1],@C[2]
| ngr @C[2],@C[1]
| rllg @D[0],@D[0],$rhotates[3][0]
| xgr @C[2],@T[0] # C[0] ^ ( C[2] & ~C[1])
| ogr @T[0],@C[4]
| stg @C[2],$A[4][0]($src) # R[4][0] = C[0] ^ ( C[2] & ~C[1])
| xgr @T[0],@C[3] # C[3] ^ ( C[0] | C[4])
|
| ngr @C[4],@C[3]
| stg @T[0],$A[4][3]($src) # R[4][3] = C[3] ^ ( C[0] | C[4])
| xgr @C[4],@T[1] # C[2] ^ ( C[4] & C[3])
| ogr @C[3],@T[1]
| stg @C[4],$A[4][2]($src) # R[4][2] = C[2] ^ ( C[4] & C[3])
| xgr @C[3],@C[1] # ~C[1] ^ ( C[2] | C[3])
|
| lgr @C[1],@C[0] # harmonize with the loop top
| lgr @C[0],@T[0]
| stg @C[3],$A[4][1]($src) # R[4][1] = ~C[1] ^ ( C[2] | C[3])
|
| tmll $iotas,255
| jnz .Loop
|
| l${g} %r14,$SIZE_T*14($sp)
| br %r14
| .size __KeccakF1600,.-__KeccakF1600
| ___
| }
| {
| $code.=<<___;
| .type KeccakF1600,\@function
| .align 32
| KeccakF1600:
| .LKeccakF1600:
| lghi %r1,-$frame
| stm${g} %r6,%r15,$SIZE_T*6($sp)
| lgr %r0,$sp
| la $sp,0(%r1,$sp)
| st${g} %r0,0($sp)
|
| lghi @D[0],-1 # no 'not' instruction :-(
| lghi @D[1],-1
| lghi @D[2],-1
| lghi @D[3],-1
| lghi @D[4],-1
| lghi @T[0],-1
| xg @D[0],$A[0][1]($src)
| xg @D[1],$A[0][2]($src)
| xg @D[2],$A[1][3]($src)
| xg @D[3],$A[2][2]($src)
| xg @D[4],$A[3][2]($src)
| xg @T[0],$A[4][0]($src)
| stmg @D[0],@D[1],$A[0][1]($src)
| stg @D[2],$A[1][3]($src)
| stg @D[3],$A[2][2]($src)
| stg @D[4],$A[3][2]($src)
| stg @T[0],$A[4][0]($src)
|
| la $dst,$stdframe($sp)
|
| bras %r14,__KeccakF1600
|
| lghi @D[0],-1 # no 'not' instruction :-(
| lghi @D[1],-1
| lghi @D[2],-1
| lghi @D[3],-1
| lghi @D[4],-1
| lghi @T[0],-1
| xg @D[0],$A[0][1]($src)
| xg @D[1],$A[0][2]($src)
| xg @D[2],$A[1][3]($src)
| xg @D[3],$A[2][2]($src)
| xg @D[4],$A[3][2]($src)
| xg @T[0],$A[4][0]($src)
| stmg @D[0],@D[1],$A[0][1]($src)
| stg @D[2],$A[1][3]($src)
| stg @D[3],$A[2][2]($src)
| stg @D[4],$A[3][2]($src)
| stg @T[0],$A[4][0]($src)
|
| lm${g} %r6,%r15,$frame+6*$SIZE_T($sp)
| br %r14
| .size KeccakF1600,.-KeccakF1600
| ___
| }
| { my ($A_flat,$inp,$len,$bsz) = map("%r$_",(2..5));
|
| $code.=<<___;
| .globl SHA3_absorb
| .type SHA3_absorb,\@function
| .align 32
| SHA3_absorb:
| lghi %r1,-$frame
| stm${g} %r5,%r15,$SIZE_T*5($sp)
| lgr %r0,$sp
| la $sp,0(%r1,$sp)
| st${g} %r0,0($sp)
|
| lghi @D[0],-1 # no 'not' instruction :-(
| lghi @D[1],-1
| lghi @D[2],-1
| lghi @D[3],-1
| lghi @D[4],-1
| lghi @T[0],-1
| xg @D[0],$A[0][1]($src)
| xg @D[1],$A[0][2]($src)
| xg @D[2],$A[1][3]($src)
| xg @D[3],$A[2][2]($src)
| xg @D[4],$A[3][2]($src)
| xg @T[0],$A[4][0]($src)
| stmg @D[0],@D[1],$A[0][1]($src)
| stg @D[2],$A[1][3]($src)
| stg @D[3],$A[2][2]($src)
| stg @D[4],$A[3][2]($src)
| stg @T[0],$A[4][0]($src)
|
| .Loop_absorb:
| cl${g}r $len,$bsz
| jl .Ldone_absorb
|
| srl${g} $bsz,3
| la %r1,0($A_flat)
|
| .Lblock_absorb:
| lrvg %r0,0($inp)
| la $inp,8($inp)
| xg %r0,0(%r1)
| a${g}hi $len,-8
| stg %r0,0(%r1)
| la %r1,8(%r1)
| brct $bsz,.Lblock_absorb
|
| stm${g} $inp,$len,$frame+3*$SIZE_T($sp)
| la $dst,$stdframe($sp)
| bras %r14,__KeccakF1600
| lm${g} $inp,$bsz,$frame+3*$SIZE_T($sp)
| j .Loop_absorb
|
| .align 16
| .Ldone_absorb:
| lghi @D[0],-1 # no 'not' instruction :-(
| lghi @D[1],-1
| lghi @D[2],-1
| lghi @D[3],-1
| lghi @D[4],-1
| lghi @T[0],-1
| xg @D[0],$A[0][1]($src)
| xg @D[1],$A[0][2]($src)
| xg @D[2],$A[1][3]($src)
| xg @D[3],$A[2][2]($src)
| xg @D[4],$A[3][2]($src)
| xg @T[0],$A[4][0]($src)
| stmg @D[0],@D[1],$A[0][1]($src)
| stg @D[2],$A[1][3]($src)
| stg @D[3],$A[2][2]($src)
| stg @D[4],$A[3][2]($src)
| stg @T[0],$A[4][0]($src)
|
| lgr %r2,$len # return value
|
| lm${g} %r6,%r15,$frame+6*$SIZE_T($sp)
| br %r14
| .size SHA3_absorb,.-SHA3_absorb
| ___
| }
| { my ($A_flat,$out,$len,$bsz) = map("%r$_",(2..5));
|
| $code.=<<___;
| .globl SHA3_squeeze
| .type SHA3_squeeze,\@function
| .align 32
| SHA3_squeeze:
| srl${g} $bsz,3
| st${g} %r14,2*$SIZE_T($sp)
| lghi %r14,8
| st${g} $bsz,5*$SIZE_T($sp)
| la %r1,0($A_flat)
|
| j .Loop_squeeze
|
| .align 16
| .Loop_squeeze:
| cl${g}r $len,%r14
| jl .Ltail_squeeze
|
| lrvg %r0,0(%r1)
| la %r1,8(%r1)
| stg %r0,0($out)
| la $out,8($out)
| a${g}hi $len,-8 # len -= 8
| jz .Ldone_squeeze
|
| brct $bsz,.Loop_squeeze # bsz--
|
| stm${g} $out,$len,3*$SIZE_T($sp)
| bras %r14,.LKeccakF1600
| lm${g} $out,$bsz,3*$SIZE_T($sp)
| lghi %r14,8
| la %r1,0($A_flat)
| j .Loop_squeeze
|
| .Ltail_squeeze:
| lg %r0,0(%r1)
| .Loop_tail_squeeze:
| stc %r0,0($out)
| la $out,1($out)
| srlg %r0,8
| brct $len,.Loop_tail_squeeze
|
| .Ldone_squeeze:
| l${g} %r14,2*$SIZE_T($sp)
| br %r14
| .size SHA3_squeeze,.-SHA3_squeeze
| ___
| }
| $code.=<<___;
| .align 256
| .quad 0,0,0,0,0,0,0,0
| .type iotas,\@object
| iotas:
| .quad 0x0000000000000001
| .quad 0x0000000000008082
| .quad 0x800000000000808a
| .quad 0x8000000080008000
| .quad 0x000000000000808b
| .quad 0x0000000080000001
| .quad 0x8000000080008081
| .quad 0x8000000000008009
| .quad 0x000000000000008a
| .quad 0x0000000000000088
| .quad 0x0000000080008009
| .quad 0x000000008000000a
| .quad 0x000000008000808b
| .quad 0x800000000000008b
| .quad 0x8000000000008089
| .quad 0x8000000000008003
| .quad 0x8000000000008002
| .quad 0x8000000000000080
| .quad 0x000000000000800a
| .quad 0x800000008000000a
| .quad 0x8000000080008081
| .quad 0x8000000000008080
| .quad 0x0000000080000001
| .quad 0x8000000080008008
| .size iotas,.-iotas
| .asciz "Keccak-1600 absorb and squeeze for s390x, CRYPTOGAMS by <appro\@openssl.org>"
| ___
|
| # unlike 32-bit shift 64-bit one takes three arguments
| $code =~ s/(srlg\s+)(%r[0-9]+),/$1$2,$2,/gm;
|
| print $code;
| close STDOUT or die "error closing STDOUT: $!";
|
|
