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| #! /usr/bin/env perl
| # Copyright 2014-2020 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/.
| # ====================================================================
|
| # SHA256/512 for PowerISA v2.07.
| #
| # Accurate performance measurements are problematic, because it's
| # always virtualized setup with possibly throttled processor.
| # Relative comparison is therefore more informative. This module is
| # ~60% faster than integer-only sha512-ppc.pl. To anchor to something
| # else, SHA256 is 24% slower than sha1-ppc.pl and 2.5x slower than
| # hardware-assisted aes-128-cbc encrypt. SHA512 is 20% faster than
| # sha1-ppc.pl and 1.6x slower than aes-128-cbc. Another interesting
| # result is degree of computational resources' utilization. POWER8 is
| # "massively multi-threaded chip" and difference between single- and
| # maximum multi-process benchmark results tells that utilization is
| # whooping 94%. For sha512-ppc.pl we get [not unimpressive] 84% and
| # for sha1-ppc.pl - 73%. 100% means that multi-process result equals
| # to single-process one, given that all threads end up on the same
| # physical core.
| #
| ######################################################################
| # Believed-to-be-accurate results in cycles per processed byte [on
| # little-endian system]. Numbers in square brackets are for 64-bit
| # build of sha512-ppc.pl, presented for reference.
| #
| # POWER8 POWER9
| # SHA256 9.7 [15.8] 11.2 [12.5]
| # SHA512 6.1 [10.3] 7.0 [7.9]
|
| $flavour=shift;
| $output =shift;
|
| if ($flavour =~ /64/) {
| $SIZE_T=8;
| $LRSAVE=2*$SIZE_T;
| $STU="stdu";
| $POP="ld";
| $PUSH="std";
| } elsif ($flavour =~ /32/) {
| $SIZE_T=4;
| $LRSAVE=$SIZE_T;
| $STU="stwu";
| $POP="lwz";
| $PUSH="stw";
| } else { die "nonsense $flavour"; }
|
| $LENDIAN=($flavour=~/le/);
|
| $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
| ( $xlate="${dir}ppc-xlate.pl" and -f $xlate ) or
| ( $xlate="${dir}../../perlasm/ppc-xlate.pl" and -f $xlate) or
| die "can't locate ppc-xlate.pl";
|
| open STDOUT,"| $^X $xlate $flavour $output" || die "can't call $xlate: $!";
|
| if ($output =~ /512/) {
| $bits=512;
| $SZ=8;
| $sz="d";
| $rounds=80;
| } else {
| $bits=256;
| $SZ=4;
| $sz="w";
| $rounds=64;
| }
|
| $func="sha${bits}_block_p8";
| $LOCALS=8*$SIZE_T+8*16;
| $FRAME=$LOCALS+9*16+6*$SIZE_T;
|
| $sp ="r1";
| $toc="r2";
| $ctx="r3";
| $inp="r4";
| $num="r5";
| $Tbl="r6";
| $idx="r7";
| $lrsave="r8";
| $offload="r11";
| $vrsave="r12";
| @I = ($x00,$x10,$x20,$x30,$x40,$x50,$x60,$x70) = (0,map("r$_",(10,26..31)));
|
| @V=($A,$B,$C,$D,$E,$F,$G,$H)=map("v$_",(0..7));
| @X=map("v$_",(8..19,24..27));
| ($Ki,$Func,$Sigma,$lemask)=map("v$_",(28..31));
|
| sub ROUND {
| my ($i,$a,$b,$c,$d,$e,$f,$g,$h)=@_;
| my $j=($i+1)%16;
| my $k=($i+2)%8;
|
| $code.=<<___ if ($i<15 && ($i%(16/$SZ))==(16/$SZ-1));
| lvx_u @X[$i+1],0,$inp ; load X[i] in advance
| addi $inp,$inp,16
| ___
| $code.=<<___ if ($i<16 && ($i%(16/$SZ)));
| vsldoi @X[$i],@X[$i-1],@X[$i-1],$SZ
| ___
| $code.=<<___ if ($LENDIAN && $i<16 && ($i%(16/$SZ))==0);
| vperm @X[$i],@X[$i],@X[$i],$lemask
| ___
| $code.=<<___ if ($i>=15);
| vshasigma${sz} $Sigma,@X[($j+1)%16],0,0
| vaddu${sz}m @X[$j],@X[$j],$Sigma
| vshasigma${sz} $Sigma,@X[($j+14)%16],0,15
| vaddu${sz}m @X[$j],@X[$j],$Sigma
| vaddu${sz}m @X[$j],@X[$j],@X[($j+9)%16]
| ___
| $code.=<<___;
| vaddu${sz}m $h,$h,@X[$i%16] ; h+=X[i]
| vsel $Func,$g,$f,$e ; Ch(e,f,g)
| vaddu${sz}m $g,$g,$Ki ; future h+=K[i]
| vaddu${sz}m $h,$h,$Func ; h+=Ch(e,f,g)
| vshasigma${sz} $Sigma,$e,1,15 ; Sigma1(e)
| vaddu${sz}m $h,$h,$Sigma ; h+=Sigma1(e)
| vxor $Func,$a,$b
| vsel $Func,$b,$c,$Func ; Maj(a,b,c)
| vaddu${sz}m $d,$d,$h ; d+=h
| vshasigma${sz} $Sigma,$a,1,0 ; Sigma0(a)
| vaddu${sz}m $Sigma,$Sigma,$Func ; Sigma0(a)+Maj(a,b,c)
| vaddu${sz}m $h,$h,$Sigma ; h+=Sigma0(a)+Maj(a,b,c)
| lvx $Ki,@I[$k],$idx ; load next K[i]
| ___
| $code.=<<___ if ($k == 7);
| addi $idx,$idx,0x80
| ___
| }
|
| $code=<<___;
| .machine "any"
| .text
|
| .globl $func
| .align 6
| $func:
| $STU $sp,-$FRAME($sp)
| mflr $lrsave
| li r10,`$LOCALS+15`
| li r11,`$LOCALS+31`
| stvx v24,r10,$sp # ABI says so
| addi r10,r10,32
| mfspr $vrsave,256
| stvx v25,r11,$sp
| addi r11,r11,32
| stvx v26,r10,$sp
| addi r10,r10,32
| stvx v27,r11,$sp
| addi r11,r11,32
| stvx v28,r10,$sp
| addi r10,r10,32
| stvx v29,r11,$sp
| addi r11,r11,32
| stvx v30,r10,$sp
| stvx v31,r11,$sp
| li r11,-4096+255 # 0xfffff0ff
| stw $vrsave,`$FRAME-6*$SIZE_T-4`($sp) # save vrsave
| li $x10,0x10
| $PUSH r26,`$FRAME-6*$SIZE_T`($sp)
| li $x20,0x20
| $PUSH r27,`$FRAME-5*$SIZE_T`($sp)
| li $x30,0x30
| $PUSH r28,`$FRAME-4*$SIZE_T`($sp)
| li $x40,0x40
| $PUSH r29,`$FRAME-3*$SIZE_T`($sp)
| li $x50,0x50
| $PUSH r30,`$FRAME-2*$SIZE_T`($sp)
| li $x60,0x60
| $PUSH r31,`$FRAME-1*$SIZE_T`($sp)
| li $x70,0x70
| $PUSH $lrsave,`$FRAME+$LRSAVE`($sp)
| mtspr 256,r11
|
| bl LPICmeup
| addi $offload,$sp,`8*$SIZE_T+15`
| ___
| $code.=<<___ if ($LENDIAN);
| li $idx,8
| lvsl $lemask,0,$idx
| vspltisb $Ki,0x0f
| vxor $lemask,$lemask,$Ki
| ___
| $code.=<<___ if ($SZ==4);
| lvx_4w $A,$x00,$ctx
| lvx_4w $E,$x10,$ctx
| vsldoi $B,$A,$A,4 # unpack
| vsldoi $C,$A,$A,8
| vsldoi $D,$A,$A,12
| vsldoi $F,$E,$E,4
| vsldoi $G,$E,$E,8
| vsldoi $H,$E,$E,12
| ___
| $code.=<<___ if ($SZ==8);
| lvx_u $A,$x00,$ctx
| lvx_u $C,$x10,$ctx
| lvx_u $E,$x20,$ctx
| vsldoi $B,$A,$A,8 # unpack
| lvx_u $G,$x30,$ctx
| vsldoi $D,$C,$C,8
| vsldoi $F,$E,$E,8
| vsldoi $H,$G,$G,8
| ___
| $code.=<<___;
| li r0,`($rounds-16)/16` # inner loop counter
| b Loop
| .align 5
| Loop:
| lvx $Ki,$x00,$Tbl
| lvx_u @X[0],0,$inp
| addi $inp,$inp,16
| mr $idx,$Tbl # copy $Tbl
| stvx $A,$x00,$offload # offload $A-$H
| stvx $B,$x10,$offload
| stvx $C,$x20,$offload
| stvx $D,$x30,$offload
| stvx $E,$x40,$offload
| stvx $F,$x50,$offload
| stvx $G,$x60,$offload
| stvx $H,$x70,$offload
| vaddu${sz}m $H,$H,$Ki # h+K[i]
| lvx $Ki,$x10,$Tbl
| ___
| for ($i=0;$i<16;$i++) { &ROUND($i,@V); unshift(@V,pop(@V)); }
| $code.=<<___;
| mtctr r0
| b L16_xx
| .align 5
| L16_xx:
| ___
| for (;$i<32;$i++) { &ROUND($i,@V); unshift(@V,pop(@V)); }
| $code.=<<___;
| bdnz L16_xx
|
| lvx @X[2],$x00,$offload
| subic. $num,$num,1
| lvx @X[3],$x10,$offload
| vaddu${sz}m $A,$A,@X[2]
| lvx @X[4],$x20,$offload
| vaddu${sz}m $B,$B,@X[3]
| lvx @X[5],$x30,$offload
| vaddu${sz}m $C,$C,@X[4]
| lvx @X[6],$x40,$offload
| vaddu${sz}m $D,$D,@X[5]
| lvx @X[7],$x50,$offload
| vaddu${sz}m $E,$E,@X[6]
| lvx @X[8],$x60,$offload
| vaddu${sz}m $F,$F,@X[7]
| lvx @X[9],$x70,$offload
| vaddu${sz}m $G,$G,@X[8]
| vaddu${sz}m $H,$H,@X[9]
| bne Loop
| ___
| $code.=<<___ if ($SZ==4);
| lvx @X[0],$x20,$idx
| vperm $A,$A,$B,$Ki # pack the answer
| lvx @X[1],$x30,$idx
| vperm $E,$E,$F,$Ki
| vperm $A,$A,$C,@X[0]
| vperm $E,$E,$G,@X[0]
| vperm $A,$A,$D,@X[1]
| vperm $E,$E,$H,@X[1]
| stvx_4w $A,$x00,$ctx
| stvx_4w $E,$x10,$ctx
| ___
| $code.=<<___ if ($SZ==8);
| vperm $A,$A,$B,$Ki # pack the answer
| vperm $C,$C,$D,$Ki
| vperm $E,$E,$F,$Ki
| vperm $G,$G,$H,$Ki
| stvx_u $A,$x00,$ctx
| stvx_u $C,$x10,$ctx
| stvx_u $E,$x20,$ctx
| stvx_u $G,$x30,$ctx
| ___
| $code.=<<___;
| addi $offload,$sp,`$LOCALS+15`
| mtlr $lrsave
| mtspr 256,$vrsave
| lvx v24,$x00,$offload # ABI says so
| lvx v25,$x10,$offload
| lvx v26,$x20,$offload
| lvx v27,$x30,$offload
| lvx v28,$x40,$offload
| lvx v29,$x50,$offload
| lvx v30,$x60,$offload
| lvx v31,$x70,$offload
| $POP r26,`$FRAME-6*$SIZE_T`($sp)
| $POP r27,`$FRAME-5*$SIZE_T`($sp)
| $POP r28,`$FRAME-4*$SIZE_T`($sp)
| $POP r29,`$FRAME-3*$SIZE_T`($sp)
| $POP r30,`$FRAME-2*$SIZE_T`($sp)
| $POP r31,`$FRAME-1*$SIZE_T`($sp)
| addi $sp,$sp,$FRAME
| blr
| .long 0
| .byte 0,12,4,1,0x80,6,3,0
| .long 0
| .size $func,.-$func
| ___
|
| # Ugly hack here, because PPC assembler syntax seem to vary too
| # much from platforms to platform...
| $code.=<<___;
| .align 6
| LPICmeup:
| mflr r0
| bcl 20,31,\$+4
| mflr $Tbl ; vvvvvv "distance" between . and 1st data entry
| addi $Tbl,$Tbl,`64-8`
| mtlr r0
| blr
| .long 0
| .byte 0,12,0x14,0,0,0,0,0
| .space `64-9*4`
| ___
|
| if ($SZ==8) {
| local *table = sub {
| foreach(@_) { $code.=".quad $_,$_\n"; }
| };
| table(
| "0x428a2f98d728ae22","0x7137449123ef65cd",
| "0xb5c0fbcfec4d3b2f","0xe9b5dba58189dbbc",
| "0x3956c25bf348b538","0x59f111f1b605d019",
| "0x923f82a4af194f9b","0xab1c5ed5da6d8118",
| "0xd807aa98a3030242","0x12835b0145706fbe",
| "0x243185be4ee4b28c","0x550c7dc3d5ffb4e2",
| "0x72be5d74f27b896f","0x80deb1fe3b1696b1",
| "0x9bdc06a725c71235","0xc19bf174cf692694",
| "0xe49b69c19ef14ad2","0xefbe4786384f25e3",
| "0x0fc19dc68b8cd5b5","0x240ca1cc77ac9c65",
| "0x2de92c6f592b0275","0x4a7484aa6ea6e483",
| "0x5cb0a9dcbd41fbd4","0x76f988da831153b5",
| "0x983e5152ee66dfab","0xa831c66d2db43210",
| "0xb00327c898fb213f","0xbf597fc7beef0ee4",
| "0xc6e00bf33da88fc2","0xd5a79147930aa725",
| "0x06ca6351e003826f","0x142929670a0e6e70",
| "0x27b70a8546d22ffc","0x2e1b21385c26c926",
| "0x4d2c6dfc5ac42aed","0x53380d139d95b3df",
| "0x650a73548baf63de","0x766a0abb3c77b2a8",
| "0x81c2c92e47edaee6","0x92722c851482353b",
| "0xa2bfe8a14cf10364","0xa81a664bbc423001",
| "0xc24b8b70d0f89791","0xc76c51a30654be30",
| "0xd192e819d6ef5218","0xd69906245565a910",
| "0xf40e35855771202a","0x106aa07032bbd1b8",
| "0x19a4c116b8d2d0c8","0x1e376c085141ab53",
| "0x2748774cdf8eeb99","0x34b0bcb5e19b48a8",
| "0x391c0cb3c5c95a63","0x4ed8aa4ae3418acb",
| "0x5b9cca4f7763e373","0x682e6ff3d6b2b8a3",
| "0x748f82ee5defb2fc","0x78a5636f43172f60",
| "0x84c87814a1f0ab72","0x8cc702081a6439ec",
| "0x90befffa23631e28","0xa4506cebde82bde9",
| "0xbef9a3f7b2c67915","0xc67178f2e372532b",
| "0xca273eceea26619c","0xd186b8c721c0c207",
| "0xeada7dd6cde0eb1e","0xf57d4f7fee6ed178",
| "0x06f067aa72176fba","0x0a637dc5a2c898a6",
| "0x113f9804bef90dae","0x1b710b35131c471b",
| "0x28db77f523047d84","0x32caab7b40c72493",
| "0x3c9ebe0a15c9bebc","0x431d67c49c100d4c",
| "0x4cc5d4becb3e42b6","0x597f299cfc657e2a",
| "0x5fcb6fab3ad6faec","0x6c44198c4a475817","0");
| $code.=<<___ if (!$LENDIAN);
| .quad 0x0001020304050607,0x1011121314151617
| ___
| $code.=<<___ if ($LENDIAN); # quad-swapped
| .quad 0x1011121314151617,0x0001020304050607
| ___
| } else {
| local *table = sub {
| foreach(@_) { $code.=".long $_,$_,$_,$_\n"; }
| };
| table(
| "0x428a2f98","0x71374491","0xb5c0fbcf","0xe9b5dba5",
| "0x3956c25b","0x59f111f1","0x923f82a4","0xab1c5ed5",
| "0xd807aa98","0x12835b01","0x243185be","0x550c7dc3",
| "0x72be5d74","0x80deb1fe","0x9bdc06a7","0xc19bf174",
| "0xe49b69c1","0xefbe4786","0x0fc19dc6","0x240ca1cc",
| "0x2de92c6f","0x4a7484aa","0x5cb0a9dc","0x76f988da",
| "0x983e5152","0xa831c66d","0xb00327c8","0xbf597fc7",
| "0xc6e00bf3","0xd5a79147","0x06ca6351","0x14292967",
| "0x27b70a85","0x2e1b2138","0x4d2c6dfc","0x53380d13",
| "0x650a7354","0x766a0abb","0x81c2c92e","0x92722c85",
| "0xa2bfe8a1","0xa81a664b","0xc24b8b70","0xc76c51a3",
| "0xd192e819","0xd6990624","0xf40e3585","0x106aa070",
| "0x19a4c116","0x1e376c08","0x2748774c","0x34b0bcb5",
| "0x391c0cb3","0x4ed8aa4a","0x5b9cca4f","0x682e6ff3",
| "0x748f82ee","0x78a5636f","0x84c87814","0x8cc70208",
| "0x90befffa","0xa4506ceb","0xbef9a3f7","0xc67178f2","0");
| $code.=<<___ if (!$LENDIAN);
| .long 0x00010203,0x10111213,0x10111213,0x10111213
| .long 0x00010203,0x04050607,0x10111213,0x10111213
| .long 0x00010203,0x04050607,0x08090a0b,0x10111213
| ___
| $code.=<<___ if ($LENDIAN); # word-swapped
| .long 0x10111213,0x10111213,0x10111213,0x00010203
| .long 0x10111213,0x10111213,0x04050607,0x00010203
| .long 0x10111213,0x08090a0b,0x04050607,0x00010203
| ___
| }
| $code.=<<___;
| .asciz "SHA${bits} for PowerISA 2.07, CRYPTOGAMS by <appro\@openssl.org>"
| .align 2
| ___
|
| $code =~ s/\`([^\`]*)\`/eval $1/gem;
| print $code;
| close STDOUT or die "error closing STDOUT: $!";
|
|
