| 1 | #! /usr/bin/env perl
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| 2 | # Copyright 2016-2020 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | #
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| 4 | # Licensed under the Apache License 2.0 (the "License"). You may not use
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| 5 | # this file except in compliance with the License. You can obtain a copy
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| 6 | # in the file LICENSE in the source distribution or at
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| 7 | # https://www.openssl.org/source/license.html
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| 8 |
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| 9 | #
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| 10 | # ====================================================================
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| 11 | # Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
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| 12 | # project. The module is, however, dual licensed under OpenSSL and
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| 13 | # CRYPTOGAMS licenses depending on where you obtain it. For further
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| 14 | # details see http://www.openssl.org/~appro/cryptogams/.
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| 15 | # ====================================================================
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| 16 | #
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| 17 | # October 2015
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| 18 | #
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| 19 | # ChaCha20 for PowerPC/AltiVec.
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| 20 | #
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| 21 | # June 2018
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| 22 | #
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| 23 | # Add VSX 2.07 code path. Original 3xAltiVec+1xIALU is well-suited for
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| 24 | # processors that can't issue more than one vector instruction per
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| 25 | # cycle. But POWER8 (and POWER9) can issue a pair, and vector-only 4x
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| 26 | # interleave would perform better. Incidentally PowerISA 2.07 (first
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| 27 | # implemented by POWER8) defined new usable instructions, hence 4xVSX
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| 28 | # code path...
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| 29 | #
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| 30 | # Performance in cycles per byte out of large buffer.
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| 31 | #
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| 32 | # IALU/gcc-4.x 3xAltiVec+1xIALU 4xVSX
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| 33 | #
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| 34 | # Freescale e300 13.6/+115% - -
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| 35 | # PPC74x0/G4e 6.81/+310% 3.81 -
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| 36 | # PPC970/G5 9.29/+160% ? -
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| 37 | # POWER7 8.62/+61% 3.35 -
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| 38 | # POWER8 8.70/+51% 2.91 2.09
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| 39 | # POWER9 8.80/+29% 4.44(*) 2.45(**)
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| 40 | #
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| 41 | # (*) this is trade-off result, it's possible to improve it, but
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| 42 | # then it would negatively affect all others;
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| 43 | # (**) POWER9 seems to be "allergic" to mixing vector and integer
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| 44 | # instructions, which is why switch to vector-only code pays
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| 45 | # off that much;
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| 46 |
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| 47 | # $output is the last argument if it looks like a file (it has an extension)
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| 48 | # $flavour is the first argument if it doesn't look like a file
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| 49 | $output = $#ARGV >= 0 && $ARGV[$#ARGV] =~ m|\.\w+$| ? pop : undef;
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| 50 | $flavour = $#ARGV >= 0 && $ARGV[0] !~ m|\.| ? shift : undef;
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| 51 |
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| 52 | if ($flavour =~ /64/) {
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| 53 | $SIZE_T =8;
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| 54 | $LRSAVE =2*$SIZE_T;
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| 55 | $STU ="stdu";
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| 56 | $POP ="ld";
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| 57 | $PUSH ="std";
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| 58 | $UCMP ="cmpld";
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| 59 | } elsif ($flavour =~ /32/) {
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| 60 | $SIZE_T =4;
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| 61 | $LRSAVE =$SIZE_T;
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| 62 | $STU ="stwu";
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| 63 | $POP ="lwz";
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| 64 | $PUSH ="stw";
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| 65 | $UCMP ="cmplw";
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| 66 | } else { die "nonsense $flavour"; }
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| 67 |
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| 68 | $LITTLE_ENDIAN = ($flavour=~/le$/) ? 1 : 0;
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| 69 |
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| 70 | $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
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| 71 | ( $xlate="${dir}ppc-xlate.pl" and -f $xlate ) or
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| 72 | ( $xlate="${dir}../../perlasm/ppc-xlate.pl" and -f $xlate) or
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| 73 | die "can't locate ppc-xlate.pl";
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| 74 |
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| 75 | open STDOUT,"| $^X $xlate $flavour \"$output\""
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| 76 | or die "can't call $xlate: $!";
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| 77 |
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| 78 | $LOCALS=6*$SIZE_T;
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| 79 | $FRAME=$LOCALS+64+18*$SIZE_T; # 64 is for local variables
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| 80 |
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| 81 | sub AUTOLOAD() # thunk [simplified] x86-style perlasm
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| 82 | { my $opcode = $AUTOLOAD; $opcode =~ s/.*:://; $opcode =~ s/_/\./;
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| 83 | $code .= "\t$opcode\t".join(',',@_)."\n";
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| 84 | }
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| 85 |
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| 86 | my $sp = "r1";
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| 87 |
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| 88 | my ($out,$inp,$len,$key,$ctr) = map("r$_",(3..7));
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| 89 |
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| 90 | my @x=map("r$_",(16..31));
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| 91 | my @d=map("r$_",(11,12,14,15));
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| 92 | my @t=map("r$_",(7..10));
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| 93 |
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| 94 | sub ROUND {
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| 95 | my ($a0,$b0,$c0,$d0)=@_;
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| 96 | my ($a1,$b1,$c1,$d1)=map(($_&~3)+(($_+1)&3),($a0,$b0,$c0,$d0));
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| 97 | my ($a2,$b2,$c2,$d2)=map(($_&~3)+(($_+1)&3),($a1,$b1,$c1,$d1));
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| 98 | my ($a3,$b3,$c3,$d3)=map(($_&~3)+(($_+1)&3),($a2,$b2,$c2,$d2));
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| 99 |
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| 100 | (
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| 101 | "&add (@x[$a0],@x[$a0],@x[$b0])",
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| 102 | "&add (@x[$a1],@x[$a1],@x[$b1])",
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| 103 | "&add (@x[$a2],@x[$a2],@x[$b2])",
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| 104 | "&add (@x[$a3],@x[$a3],@x[$b3])",
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| 105 | "&xor (@x[$d0],@x[$d0],@x[$a0])",
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| 106 | "&xor (@x[$d1],@x[$d1],@x[$a1])",
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| 107 | "&xor (@x[$d2],@x[$d2],@x[$a2])",
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| 108 | "&xor (@x[$d3],@x[$d3],@x[$a3])",
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| 109 | "&rotlwi (@x[$d0],@x[$d0],16)",
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| 110 | "&rotlwi (@x[$d1],@x[$d1],16)",
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| 111 | "&rotlwi (@x[$d2],@x[$d2],16)",
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| 112 | "&rotlwi (@x[$d3],@x[$d3],16)",
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| 113 |
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| 114 | "&add (@x[$c0],@x[$c0],@x[$d0])",
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| 115 | "&add (@x[$c1],@x[$c1],@x[$d1])",
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| 116 | "&add (@x[$c2],@x[$c2],@x[$d2])",
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| 117 | "&add (@x[$c3],@x[$c3],@x[$d3])",
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| 118 | "&xor (@x[$b0],@x[$b0],@x[$c0])",
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| 119 | "&xor (@x[$b1],@x[$b1],@x[$c1])",
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| 120 | "&xor (@x[$b2],@x[$b2],@x[$c2])",
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| 121 | "&xor (@x[$b3],@x[$b3],@x[$c3])",
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| 122 | "&rotlwi (@x[$b0],@x[$b0],12)",
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| 123 | "&rotlwi (@x[$b1],@x[$b1],12)",
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| 124 | "&rotlwi (@x[$b2],@x[$b2],12)",
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| 125 | "&rotlwi (@x[$b3],@x[$b3],12)",
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| 126 |
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| 127 | "&add (@x[$a0],@x[$a0],@x[$b0])",
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| 128 | "&add (@x[$a1],@x[$a1],@x[$b1])",
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| 129 | "&add (@x[$a2],@x[$a2],@x[$b2])",
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| 130 | "&add (@x[$a3],@x[$a3],@x[$b3])",
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| 131 | "&xor (@x[$d0],@x[$d0],@x[$a0])",
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| 132 | "&xor (@x[$d1],@x[$d1],@x[$a1])",
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| 133 | "&xor (@x[$d2],@x[$d2],@x[$a2])",
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| 134 | "&xor (@x[$d3],@x[$d3],@x[$a3])",
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| 135 | "&rotlwi (@x[$d0],@x[$d0],8)",
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| 136 | "&rotlwi (@x[$d1],@x[$d1],8)",
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| 137 | "&rotlwi (@x[$d2],@x[$d2],8)",
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| 138 | "&rotlwi (@x[$d3],@x[$d3],8)",
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| 139 |
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| 140 | "&add (@x[$c0],@x[$c0],@x[$d0])",
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| 141 | "&add (@x[$c1],@x[$c1],@x[$d1])",
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| 142 | "&add (@x[$c2],@x[$c2],@x[$d2])",
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| 143 | "&add (@x[$c3],@x[$c3],@x[$d3])",
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| 144 | "&xor (@x[$b0],@x[$b0],@x[$c0])",
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| 145 | "&xor (@x[$b1],@x[$b1],@x[$c1])",
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| 146 | "&xor (@x[$b2],@x[$b2],@x[$c2])",
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| 147 | "&xor (@x[$b3],@x[$b3],@x[$c3])",
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| 148 | "&rotlwi (@x[$b0],@x[$b0],7)",
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| 149 | "&rotlwi (@x[$b1],@x[$b1],7)",
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| 150 | "&rotlwi (@x[$b2],@x[$b2],7)",
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| 151 | "&rotlwi (@x[$b3],@x[$b3],7)"
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| 152 | );
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| 153 | }
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| 154 |
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| 155 | $code.=<<___;
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| 156 | .machine "any"
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| 157 | .text
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| 158 |
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| 159 | .globl .ChaCha20_ctr32_int
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| 160 | .align 5
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| 161 | .ChaCha20_ctr32_int:
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| 162 | __ChaCha20_ctr32_int:
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| 163 | ${UCMP}i $len,0
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| 164 | beqlr-
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| 165 |
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| 166 | $STU $sp,-$FRAME($sp)
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| 167 | mflr r0
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| 168 |
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| 169 | $PUSH r14,`$FRAME-$SIZE_T*18`($sp)
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| 170 | $PUSH r15,`$FRAME-$SIZE_T*17`($sp)
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| 171 | $PUSH r16,`$FRAME-$SIZE_T*16`($sp)
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| 172 | $PUSH r17,`$FRAME-$SIZE_T*15`($sp)
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| 173 | $PUSH r18,`$FRAME-$SIZE_T*14`($sp)
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| 174 | $PUSH r19,`$FRAME-$SIZE_T*13`($sp)
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| 175 | $PUSH r20,`$FRAME-$SIZE_T*12`($sp)
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| 176 | $PUSH r21,`$FRAME-$SIZE_T*11`($sp)
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| 177 | $PUSH r22,`$FRAME-$SIZE_T*10`($sp)
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| 178 | $PUSH r23,`$FRAME-$SIZE_T*9`($sp)
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| 179 | $PUSH r24,`$FRAME-$SIZE_T*8`($sp)
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| 180 | $PUSH r25,`$FRAME-$SIZE_T*7`($sp)
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| 181 | $PUSH r26,`$FRAME-$SIZE_T*6`($sp)
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| 182 | $PUSH r27,`$FRAME-$SIZE_T*5`($sp)
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| 183 | $PUSH r28,`$FRAME-$SIZE_T*4`($sp)
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| 184 | $PUSH r29,`$FRAME-$SIZE_T*3`($sp)
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| 185 | $PUSH r30,`$FRAME-$SIZE_T*2`($sp)
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| 186 | $PUSH r31,`$FRAME-$SIZE_T*1`($sp)
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| 187 | $PUSH r0,`$FRAME+$LRSAVE`($sp)
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| 188 |
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| 189 | lwz @d[0],0($ctr) # load counter
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| 190 | lwz @d[1],4($ctr)
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| 191 | lwz @d[2],8($ctr)
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| 192 | lwz @d[3],12($ctr)
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| 193 |
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| 194 | bl __ChaCha20_1x
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| 195 |
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| 196 | $POP r0,`$FRAME+$LRSAVE`($sp)
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| 197 | $POP r14,`$FRAME-$SIZE_T*18`($sp)
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| 198 | $POP r15,`$FRAME-$SIZE_T*17`($sp)
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| 199 | $POP r16,`$FRAME-$SIZE_T*16`($sp)
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| 200 | $POP r17,`$FRAME-$SIZE_T*15`($sp)
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| 201 | $POP r18,`$FRAME-$SIZE_T*14`($sp)
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| 202 | $POP r19,`$FRAME-$SIZE_T*13`($sp)
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| 203 | $POP r20,`$FRAME-$SIZE_T*12`($sp)
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| 204 | $POP r21,`$FRAME-$SIZE_T*11`($sp)
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| 205 | $POP r22,`$FRAME-$SIZE_T*10`($sp)
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| 206 | $POP r23,`$FRAME-$SIZE_T*9`($sp)
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| 207 | $POP r24,`$FRAME-$SIZE_T*8`($sp)
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| 208 | $POP r25,`$FRAME-$SIZE_T*7`($sp)
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| 209 | $POP r26,`$FRAME-$SIZE_T*6`($sp)
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| 210 | $POP r27,`$FRAME-$SIZE_T*5`($sp)
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| 211 | $POP r28,`$FRAME-$SIZE_T*4`($sp)
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| 212 | $POP r29,`$FRAME-$SIZE_T*3`($sp)
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| 213 | $POP r30,`$FRAME-$SIZE_T*2`($sp)
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| 214 | $POP r31,`$FRAME-$SIZE_T*1`($sp)
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| 215 | mtlr r0
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| 216 | addi $sp,$sp,$FRAME
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| 217 | blr
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| 218 | .long 0
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| 219 | .byte 0,12,4,1,0x80,18,5,0
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| 220 | .long 0
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| 221 | .size .ChaCha20_ctr32_int,.-.ChaCha20_ctr32_int
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| 222 |
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| 223 | .align 5
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| 224 | __ChaCha20_1x:
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| 225 | Loop_outer:
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| 226 | lis @x[0],0x6170 # synthesize sigma
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| 227 | lis @x[1],0x3320
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| 228 | lis @x[2],0x7962
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| 229 | lis @x[3],0x6b20
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| 230 | ori @x[0],@x[0],0x7865
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| 231 | ori @x[1],@x[1],0x646e
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| 232 | ori @x[2],@x[2],0x2d32
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| 233 | ori @x[3],@x[3],0x6574
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| 234 |
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| 235 | li r0,10 # inner loop counter
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| 236 | lwz @x[4],0($key) # load key
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| 237 | lwz @x[5],4($key)
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| 238 | lwz @x[6],8($key)
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| 239 | lwz @x[7],12($key)
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| 240 | lwz @x[8],16($key)
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| 241 | mr @x[12],@d[0] # copy counter
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| 242 | lwz @x[9],20($key)
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| 243 | mr @x[13],@d[1]
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| 244 | lwz @x[10],24($key)
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| 245 | mr @x[14],@d[2]
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| 246 | lwz @x[11],28($key)
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| 247 | mr @x[15],@d[3]
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| 248 |
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| 249 | mr @t[0],@x[4]
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| 250 | mr @t[1],@x[5]
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| 251 | mr @t[2],@x[6]
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| 252 | mr @t[3],@x[7]
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| 253 |
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| 254 | mtctr r0
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| 255 | Loop:
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| 256 | ___
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| 257 | foreach (&ROUND(0, 4, 8,12)) { eval; }
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| 258 | foreach (&ROUND(0, 5,10,15)) { eval; }
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| 259 | $code.=<<___;
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| 260 | bdnz Loop
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| 261 |
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| 262 | subic $len,$len,64 # $len-=64
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| 263 | addi @x[0],@x[0],0x7865 # accumulate key block
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| 264 | addi @x[1],@x[1],0x646e
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| 265 | addi @x[2],@x[2],0x2d32
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| 266 | addi @x[3],@x[3],0x6574
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| 267 | addis @x[0],@x[0],0x6170
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| 268 | addis @x[1],@x[1],0x3320
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| 269 | addis @x[2],@x[2],0x7962
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| 270 | addis @x[3],@x[3],0x6b20
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| 271 |
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| 272 | subfe. r0,r0,r0 # borrow?-1:0
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| 273 | add @x[4],@x[4],@t[0]
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| 274 | lwz @t[0],16($key)
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| 275 | add @x[5],@x[5],@t[1]
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| 276 | lwz @t[1],20($key)
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| 277 | add @x[6],@x[6],@t[2]
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| 278 | lwz @t[2],24($key)
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| 279 | add @x[7],@x[7],@t[3]
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| 280 | lwz @t[3],28($key)
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| 281 | add @x[8],@x[8],@t[0]
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| 282 | add @x[9],@x[9],@t[1]
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| 283 | add @x[10],@x[10],@t[2]
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| 284 | add @x[11],@x[11],@t[3]
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| 285 |
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| 286 | add @x[12],@x[12],@d[0]
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| 287 | add @x[13],@x[13],@d[1]
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| 288 | add @x[14],@x[14],@d[2]
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| 289 | add @x[15],@x[15],@d[3]
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| 290 | addi @d[0],@d[0],1 # increment counter
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| 291 | ___
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| 292 | if (!$LITTLE_ENDIAN) { for($i=0;$i<16;$i++) { # flip byte order
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| 293 | $code.=<<___;
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| 294 | mr @t[$i&3],@x[$i]
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| 295 | rotlwi @x[$i],@x[$i],8
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| 296 | rlwimi @x[$i],@t[$i&3],24,0,7
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| 297 | rlwimi @x[$i],@t[$i&3],24,16,23
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| 298 | ___
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| 299 | } }
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| 300 | $code.=<<___;
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| 301 | bne Ltail # $len-=64 borrowed
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| 302 |
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| 303 | lwz @t[0],0($inp) # load input, aligned or not
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| 304 | lwz @t[1],4($inp)
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| 305 | ${UCMP}i $len,0 # done already?
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| 306 | lwz @t[2],8($inp)
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| 307 | lwz @t[3],12($inp)
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| 308 | xor @x[0],@x[0],@t[0] # xor with input
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| 309 | lwz @t[0],16($inp)
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| 310 | xor @x[1],@x[1],@t[1]
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| 311 | lwz @t[1],20($inp)
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| 312 | xor @x[2],@x[2],@t[2]
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| 313 | lwz @t[2],24($inp)
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| 314 | xor @x[3],@x[3],@t[3]
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| 315 | lwz @t[3],28($inp)
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| 316 | xor @x[4],@x[4],@t[0]
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| 317 | lwz @t[0],32($inp)
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| 318 | xor @x[5],@x[5],@t[1]
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| 319 | lwz @t[1],36($inp)
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| 320 | xor @x[6],@x[6],@t[2]
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| 321 | lwz @t[2],40($inp)
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| 322 | xor @x[7],@x[7],@t[3]
|
|---|
| 323 | lwz @t[3],44($inp)
|
|---|
| 324 | xor @x[8],@x[8],@t[0]
|
|---|
| 325 | lwz @t[0],48($inp)
|
|---|
| 326 | xor @x[9],@x[9],@t[1]
|
|---|
| 327 | lwz @t[1],52($inp)
|
|---|
| 328 | xor @x[10],@x[10],@t[2]
|
|---|
| 329 | lwz @t[2],56($inp)
|
|---|
| 330 | xor @x[11],@x[11],@t[3]
|
|---|
| 331 | lwz @t[3],60($inp)
|
|---|
| 332 | xor @x[12],@x[12],@t[0]
|
|---|
| 333 | stw @x[0],0($out) # store output, aligned or not
|
|---|
| 334 | xor @x[13],@x[13],@t[1]
|
|---|
| 335 | stw @x[1],4($out)
|
|---|
| 336 | xor @x[14],@x[14],@t[2]
|
|---|
| 337 | stw @x[2],8($out)
|
|---|
| 338 | xor @x[15],@x[15],@t[3]
|
|---|
| 339 | stw @x[3],12($out)
|
|---|
| 340 | stw @x[4],16($out)
|
|---|
| 341 | stw @x[5],20($out)
|
|---|
| 342 | stw @x[6],24($out)
|
|---|
| 343 | stw @x[7],28($out)
|
|---|
| 344 | stw @x[8],32($out)
|
|---|
| 345 | stw @x[9],36($out)
|
|---|
| 346 | stw @x[10],40($out)
|
|---|
| 347 | stw @x[11],44($out)
|
|---|
| 348 | stw @x[12],48($out)
|
|---|
| 349 | stw @x[13],52($out)
|
|---|
| 350 | stw @x[14],56($out)
|
|---|
| 351 | addi $inp,$inp,64
|
|---|
| 352 | stw @x[15],60($out)
|
|---|
| 353 | addi $out,$out,64
|
|---|
| 354 |
|
|---|
| 355 | bne Loop_outer
|
|---|
| 356 |
|
|---|
| 357 | blr
|
|---|
| 358 |
|
|---|
| 359 | .align 4
|
|---|
| 360 | Ltail:
|
|---|
| 361 | addi $len,$len,64 # restore tail length
|
|---|
| 362 | subi $inp,$inp,1 # prepare for *++ptr
|
|---|
| 363 | subi $out,$out,1
|
|---|
| 364 | addi @t[0],$sp,$LOCALS-1
|
|---|
| 365 | mtctr $len
|
|---|
| 366 |
|
|---|
| 367 | stw @x[0],`$LOCALS+0`($sp) # save whole block to stack
|
|---|
| 368 | stw @x[1],`$LOCALS+4`($sp)
|
|---|
| 369 | stw @x[2],`$LOCALS+8`($sp)
|
|---|
| 370 | stw @x[3],`$LOCALS+12`($sp)
|
|---|
| 371 | stw @x[4],`$LOCALS+16`($sp)
|
|---|
| 372 | stw @x[5],`$LOCALS+20`($sp)
|
|---|
| 373 | stw @x[6],`$LOCALS+24`($sp)
|
|---|
| 374 | stw @x[7],`$LOCALS+28`($sp)
|
|---|
| 375 | stw @x[8],`$LOCALS+32`($sp)
|
|---|
| 376 | stw @x[9],`$LOCALS+36`($sp)
|
|---|
| 377 | stw @x[10],`$LOCALS+40`($sp)
|
|---|
| 378 | stw @x[11],`$LOCALS+44`($sp)
|
|---|
| 379 | stw @x[12],`$LOCALS+48`($sp)
|
|---|
| 380 | stw @x[13],`$LOCALS+52`($sp)
|
|---|
| 381 | stw @x[14],`$LOCALS+56`($sp)
|
|---|
| 382 | stw @x[15],`$LOCALS+60`($sp)
|
|---|
| 383 |
|
|---|
| 384 | Loop_tail: # byte-by-byte loop
|
|---|
| 385 | lbzu @d[0],1($inp)
|
|---|
| 386 | lbzu @x[0],1(@t[0])
|
|---|
| 387 | xor @d[1],@d[0],@x[0]
|
|---|
| 388 | stbu @d[1],1($out)
|
|---|
| 389 | bdnz Loop_tail
|
|---|
| 390 |
|
|---|
| 391 | stw $sp,`$LOCALS+0`($sp) # wipe block on stack
|
|---|
| 392 | stw $sp,`$LOCALS+4`($sp)
|
|---|
| 393 | stw $sp,`$LOCALS+8`($sp)
|
|---|
| 394 | stw $sp,`$LOCALS+12`($sp)
|
|---|
| 395 | stw $sp,`$LOCALS+16`($sp)
|
|---|
| 396 | stw $sp,`$LOCALS+20`($sp)
|
|---|
| 397 | stw $sp,`$LOCALS+24`($sp)
|
|---|
| 398 | stw $sp,`$LOCALS+28`($sp)
|
|---|
| 399 | stw $sp,`$LOCALS+32`($sp)
|
|---|
| 400 | stw $sp,`$LOCALS+36`($sp)
|
|---|
| 401 | stw $sp,`$LOCALS+40`($sp)
|
|---|
| 402 | stw $sp,`$LOCALS+44`($sp)
|
|---|
| 403 | stw $sp,`$LOCALS+48`($sp)
|
|---|
| 404 | stw $sp,`$LOCALS+52`($sp)
|
|---|
| 405 | stw $sp,`$LOCALS+56`($sp)
|
|---|
| 406 | stw $sp,`$LOCALS+60`($sp)
|
|---|
| 407 |
|
|---|
| 408 | blr
|
|---|
| 409 | .long 0
|
|---|
| 410 | .byte 0,12,0x14,0,0,0,0,0
|
|---|
| 411 | ___
|
|---|
| 412 |
|
|---|
| 413 | {{{
|
|---|
| 414 | my ($A0,$B0,$C0,$D0,$A1,$B1,$C1,$D1,$A2,$B2,$C2,$D2)
|
|---|
| 415 | = map("v$_",(0..11));
|
|---|
| 416 | my @K = map("v$_",(12..17));
|
|---|
| 417 | my ($FOUR,$sixteen,$twenty4) = map("v$_",(18..19,23));
|
|---|
| 418 | my ($inpperm,$outperm,$outmask) = map("v$_",(24..26));
|
|---|
| 419 | my @D = map("v$_",(27..31));
|
|---|
| 420 | my ($twelve,$seven,$T0,$T1) = @D;
|
|---|
| 421 |
|
|---|
| 422 | my $FRAME=$LOCALS+64+10*16+18*$SIZE_T; # 10*16 is for v23-v31 offload
|
|---|
| 423 |
|
|---|
| 424 | sub VMXROUND {
|
|---|
| 425 | my $odd = pop;
|
|---|
| 426 | my ($a,$b,$c,$d)=@_;
|
|---|
| 427 |
|
|---|
| 428 | (
|
|---|
| 429 | "&vadduwm ('$a','$a','$b')",
|
|---|
| 430 | "&vxor ('$d','$d','$a')",
|
|---|
| 431 | "&vperm ('$d','$d','$d','$sixteen')",
|
|---|
| 432 |
|
|---|
| 433 | "&vadduwm ('$c','$c','$d')",
|
|---|
| 434 | "&vxor ('$b','$b','$c')",
|
|---|
| 435 | "&vrlw ('$b','$b','$twelve')",
|
|---|
| 436 |
|
|---|
| 437 | "&vadduwm ('$a','$a','$b')",
|
|---|
| 438 | "&vxor ('$d','$d','$a')",
|
|---|
| 439 | "&vperm ('$d','$d','$d','$twenty4')",
|
|---|
| 440 |
|
|---|
| 441 | "&vadduwm ('$c','$c','$d')",
|
|---|
| 442 | "&vxor ('$b','$b','$c')",
|
|---|
| 443 | "&vrlw ('$b','$b','$seven')",
|
|---|
| 444 |
|
|---|
| 445 | "&vrldoi ('$c','$c',8)",
|
|---|
| 446 | "&vrldoi ('$b','$b',$odd?4:12)",
|
|---|
| 447 | "&vrldoi ('$d','$d',$odd?12:4)"
|
|---|
| 448 | );
|
|---|
| 449 | }
|
|---|
| 450 |
|
|---|
| 451 | $code.=<<___;
|
|---|
| 452 |
|
|---|
| 453 | .globl .ChaCha20_ctr32_vmx
|
|---|
| 454 | .align 5
|
|---|
| 455 | .ChaCha20_ctr32_vmx:
|
|---|
| 456 | ${UCMP}i $len,256
|
|---|
| 457 | blt __ChaCha20_ctr32_int
|
|---|
| 458 |
|
|---|
| 459 | $STU $sp,-$FRAME($sp)
|
|---|
| 460 | mflr r0
|
|---|
| 461 | li r10,`15+$LOCALS+64`
|
|---|
| 462 | li r11,`31+$LOCALS+64`
|
|---|
| 463 | mfspr r12,256
|
|---|
| 464 | stvx v23,r10,$sp
|
|---|
| 465 | addi r10,r10,32
|
|---|
| 466 | stvx v24,r11,$sp
|
|---|
| 467 | addi r11,r11,32
|
|---|
| 468 | stvx v25,r10,$sp
|
|---|
| 469 | addi r10,r10,32
|
|---|
| 470 | stvx v26,r11,$sp
|
|---|
| 471 | addi r11,r11,32
|
|---|
| 472 | stvx v27,r10,$sp
|
|---|
| 473 | addi r10,r10,32
|
|---|
| 474 | stvx v28,r11,$sp
|
|---|
| 475 | addi r11,r11,32
|
|---|
| 476 | stvx v29,r10,$sp
|
|---|
| 477 | addi r10,r10,32
|
|---|
| 478 | stvx v30,r11,$sp
|
|---|
| 479 | stvx v31,r10,$sp
|
|---|
| 480 | stw r12,`$FRAME-$SIZE_T*18-4`($sp) # save vrsave
|
|---|
| 481 | $PUSH r14,`$FRAME-$SIZE_T*18`($sp)
|
|---|
| 482 | $PUSH r15,`$FRAME-$SIZE_T*17`($sp)
|
|---|
| 483 | $PUSH r16,`$FRAME-$SIZE_T*16`($sp)
|
|---|
| 484 | $PUSH r17,`$FRAME-$SIZE_T*15`($sp)
|
|---|
| 485 | $PUSH r18,`$FRAME-$SIZE_T*14`($sp)
|
|---|
| 486 | $PUSH r19,`$FRAME-$SIZE_T*13`($sp)
|
|---|
| 487 | $PUSH r20,`$FRAME-$SIZE_T*12`($sp)
|
|---|
| 488 | $PUSH r21,`$FRAME-$SIZE_T*11`($sp)
|
|---|
| 489 | $PUSH r22,`$FRAME-$SIZE_T*10`($sp)
|
|---|
| 490 | $PUSH r23,`$FRAME-$SIZE_T*9`($sp)
|
|---|
| 491 | $PUSH r24,`$FRAME-$SIZE_T*8`($sp)
|
|---|
| 492 | $PUSH r25,`$FRAME-$SIZE_T*7`($sp)
|
|---|
| 493 | $PUSH r26,`$FRAME-$SIZE_T*6`($sp)
|
|---|
| 494 | $PUSH r27,`$FRAME-$SIZE_T*5`($sp)
|
|---|
| 495 | $PUSH r28,`$FRAME-$SIZE_T*4`($sp)
|
|---|
| 496 | $PUSH r29,`$FRAME-$SIZE_T*3`($sp)
|
|---|
| 497 | $PUSH r30,`$FRAME-$SIZE_T*2`($sp)
|
|---|
| 498 | $PUSH r31,`$FRAME-$SIZE_T*1`($sp)
|
|---|
| 499 | li r12,-4096+511
|
|---|
| 500 | $PUSH r0, `$FRAME+$LRSAVE`($sp)
|
|---|
| 501 | mtspr 256,r12 # preserve 29 AltiVec registers
|
|---|
| 502 |
|
|---|
| 503 | bl Lconsts # returns pointer Lsigma in r12
|
|---|
| 504 | li @x[0],16
|
|---|
| 505 | li @x[1],32
|
|---|
| 506 | li @x[2],48
|
|---|
| 507 | li @x[3],64
|
|---|
| 508 | li @x[4],31 # 31 is not a typo
|
|---|
| 509 | li @x[5],15 # nor is 15
|
|---|
| 510 |
|
|---|
| 511 | lvx @K[1],0,$key # load key
|
|---|
| 512 | ?lvsr $T0,0,$key # prepare unaligned load
|
|---|
| 513 | lvx @K[2],@x[0],$key
|
|---|
| 514 | lvx @D[0],@x[4],$key
|
|---|
| 515 |
|
|---|
| 516 | lvx @K[3],0,$ctr # load counter
|
|---|
| 517 | ?lvsr $T1,0,$ctr # prepare unaligned load
|
|---|
| 518 | lvx @D[1],@x[5],$ctr
|
|---|
| 519 |
|
|---|
| 520 | lvx @K[0],0,r12 # load constants
|
|---|
| 521 | lvx @K[5],@x[0],r12 # one
|
|---|
| 522 | lvx $FOUR,@x[1],r12
|
|---|
| 523 | lvx $sixteen,@x[2],r12
|
|---|
| 524 | lvx $twenty4,@x[3],r12
|
|---|
| 525 |
|
|---|
| 526 | ?vperm @K[1],@K[2],@K[1],$T0 # align key
|
|---|
| 527 | ?vperm @K[2],@D[0],@K[2],$T0
|
|---|
| 528 | ?vperm @K[3],@D[1],@K[3],$T1 # align counter
|
|---|
| 529 |
|
|---|
| 530 | lwz @d[0],0($ctr) # load counter to GPR
|
|---|
| 531 | lwz @d[1],4($ctr)
|
|---|
| 532 | vadduwm @K[3],@K[3],@K[5] # adjust AltiVec counter
|
|---|
| 533 | lwz @d[2],8($ctr)
|
|---|
| 534 | vadduwm @K[4],@K[3],@K[5]
|
|---|
| 535 | lwz @d[3],12($ctr)
|
|---|
| 536 | vadduwm @K[5],@K[4],@K[5]
|
|---|
| 537 |
|
|---|
| 538 | vxor $T0,$T0,$T0 # 0x00..00
|
|---|
| 539 | vspltisw $outmask,-1 # 0xff..ff
|
|---|
| 540 | ?lvsr $inpperm,0,$inp # prepare for unaligned load
|
|---|
| 541 | ?lvsl $outperm,0,$out # prepare for unaligned store
|
|---|
| 542 | ?vperm $outmask,$outmask,$T0,$outperm
|
|---|
| 543 |
|
|---|
| 544 | be?lvsl $T0,0,@x[0] # 0x00..0f
|
|---|
| 545 | be?vspltisb $T1,3 # 0x03..03
|
|---|
| 546 | be?vxor $T0,$T0,$T1 # swap bytes within words
|
|---|
| 547 | be?vxor $outperm,$outperm,$T1
|
|---|
| 548 | be?vperm $inpperm,$inpperm,$inpperm,$T0
|
|---|
| 549 |
|
|---|
| 550 | li r0,10 # inner loop counter
|
|---|
| 551 | b Loop_outer_vmx
|
|---|
| 552 |
|
|---|
| 553 | .align 4
|
|---|
| 554 | Loop_outer_vmx:
|
|---|
| 555 | lis @x[0],0x6170 # synthesize sigma
|
|---|
| 556 | lis @x[1],0x3320
|
|---|
| 557 | vmr $A0,@K[0]
|
|---|
| 558 | lis @x[2],0x7962
|
|---|
| 559 | lis @x[3],0x6b20
|
|---|
| 560 | vmr $A1,@K[0]
|
|---|
| 561 | ori @x[0],@x[0],0x7865
|
|---|
| 562 | ori @x[1],@x[1],0x646e
|
|---|
| 563 | vmr $A2,@K[0]
|
|---|
| 564 | ori @x[2],@x[2],0x2d32
|
|---|
| 565 | ori @x[3],@x[3],0x6574
|
|---|
| 566 | vmr $B0,@K[1]
|
|---|
| 567 |
|
|---|
| 568 | lwz @x[4],0($key) # load key to GPR
|
|---|
| 569 | vmr $B1,@K[1]
|
|---|
| 570 | lwz @x[5],4($key)
|
|---|
| 571 | vmr $B2,@K[1]
|
|---|
| 572 | lwz @x[6],8($key)
|
|---|
| 573 | vmr $C0,@K[2]
|
|---|
| 574 | lwz @x[7],12($key)
|
|---|
| 575 | vmr $C1,@K[2]
|
|---|
| 576 | lwz @x[8],16($key)
|
|---|
| 577 | vmr $C2,@K[2]
|
|---|
| 578 | mr @x[12],@d[0] # copy GPR counter
|
|---|
| 579 | lwz @x[9],20($key)
|
|---|
| 580 | vmr $D0,@K[3]
|
|---|
| 581 | mr @x[13],@d[1]
|
|---|
| 582 | lwz @x[10],24($key)
|
|---|
| 583 | vmr $D1,@K[4]
|
|---|
| 584 | mr @x[14],@d[2]
|
|---|
| 585 | lwz @x[11],28($key)
|
|---|
| 586 | vmr $D2,@K[5]
|
|---|
| 587 | mr @x[15],@d[3]
|
|---|
| 588 |
|
|---|
| 589 | mr @t[0],@x[4]
|
|---|
| 590 | mr @t[1],@x[5]
|
|---|
| 591 | mr @t[2],@x[6]
|
|---|
| 592 | mr @t[3],@x[7]
|
|---|
| 593 |
|
|---|
| 594 | vspltisw $twelve,12 # synthesize constants
|
|---|
| 595 | vspltisw $seven,7
|
|---|
| 596 |
|
|---|
| 597 | mtctr r0
|
|---|
| 598 | nop
|
|---|
| 599 | Loop_vmx:
|
|---|
| 600 | ___
|
|---|
| 601 | my @thread0=&VMXROUND($A0,$B0,$C0,$D0,0);
|
|---|
| 602 | my @thread1=&VMXROUND($A1,$B1,$C1,$D1,0);
|
|---|
| 603 | my @thread2=&VMXROUND($A2,$B2,$C2,$D2,0);
|
|---|
| 604 | my @thread3=&ROUND(0,4,8,12);
|
|---|
| 605 |
|
|---|
| 606 | foreach (@thread0) {
|
|---|
| 607 | eval;
|
|---|
| 608 | eval(shift(@thread1));
|
|---|
| 609 | eval(shift(@thread2));
|
|---|
| 610 |
|
|---|
| 611 | eval(shift(@thread3));
|
|---|
| 612 | eval(shift(@thread3));
|
|---|
| 613 | eval(shift(@thread3));
|
|---|
| 614 | }
|
|---|
| 615 | foreach (@thread3) { eval; }
|
|---|
| 616 |
|
|---|
| 617 | @thread0=&VMXROUND($A0,$B0,$C0,$D0,1);
|
|---|
| 618 | @thread1=&VMXROUND($A1,$B1,$C1,$D1,1);
|
|---|
| 619 | @thread2=&VMXROUND($A2,$B2,$C2,$D2,1);
|
|---|
| 620 | @thread3=&ROUND(0,5,10,15);
|
|---|
| 621 |
|
|---|
| 622 | foreach (@thread0) {
|
|---|
| 623 | eval;
|
|---|
| 624 | eval(shift(@thread1));
|
|---|
| 625 | eval(shift(@thread2));
|
|---|
| 626 |
|
|---|
| 627 | eval(shift(@thread3));
|
|---|
| 628 | eval(shift(@thread3));
|
|---|
| 629 | eval(shift(@thread3));
|
|---|
| 630 | }
|
|---|
| 631 | foreach (@thread3) { eval; }
|
|---|
| 632 | $code.=<<___;
|
|---|
| 633 | bdnz Loop_vmx
|
|---|
| 634 |
|
|---|
| 635 | subi $len,$len,256 # $len-=256
|
|---|
| 636 | addi @x[0],@x[0],0x7865 # accumulate key block
|
|---|
| 637 | addi @x[1],@x[1],0x646e
|
|---|
| 638 | addi @x[2],@x[2],0x2d32
|
|---|
| 639 | addi @x[3],@x[3],0x6574
|
|---|
| 640 | addis @x[0],@x[0],0x6170
|
|---|
| 641 | addis @x[1],@x[1],0x3320
|
|---|
| 642 | addis @x[2],@x[2],0x7962
|
|---|
| 643 | addis @x[3],@x[3],0x6b20
|
|---|
| 644 | add @x[4],@x[4],@t[0]
|
|---|
| 645 | lwz @t[0],16($key)
|
|---|
| 646 | add @x[5],@x[5],@t[1]
|
|---|
| 647 | lwz @t[1],20($key)
|
|---|
| 648 | add @x[6],@x[6],@t[2]
|
|---|
| 649 | lwz @t[2],24($key)
|
|---|
| 650 | add @x[7],@x[7],@t[3]
|
|---|
| 651 | lwz @t[3],28($key)
|
|---|
| 652 | add @x[8],@x[8],@t[0]
|
|---|
| 653 | add @x[9],@x[9],@t[1]
|
|---|
| 654 | add @x[10],@x[10],@t[2]
|
|---|
| 655 | add @x[11],@x[11],@t[3]
|
|---|
| 656 | add @x[12],@x[12],@d[0]
|
|---|
| 657 | add @x[13],@x[13],@d[1]
|
|---|
| 658 | add @x[14],@x[14],@d[2]
|
|---|
| 659 | add @x[15],@x[15],@d[3]
|
|---|
| 660 |
|
|---|
| 661 | vadduwm $A0,$A0,@K[0] # accumulate key block
|
|---|
| 662 | vadduwm $A1,$A1,@K[0]
|
|---|
| 663 | vadduwm $A2,$A2,@K[0]
|
|---|
| 664 | vadduwm $B0,$B0,@K[1]
|
|---|
| 665 | vadduwm $B1,$B1,@K[1]
|
|---|
| 666 | vadduwm $B2,$B2,@K[1]
|
|---|
| 667 | vadduwm $C0,$C0,@K[2]
|
|---|
| 668 | vadduwm $C1,$C1,@K[2]
|
|---|
| 669 | vadduwm $C2,$C2,@K[2]
|
|---|
| 670 | vadduwm $D0,$D0,@K[3]
|
|---|
| 671 | vadduwm $D1,$D1,@K[4]
|
|---|
| 672 | vadduwm $D2,$D2,@K[5]
|
|---|
| 673 |
|
|---|
| 674 | addi @d[0],@d[0],4 # increment counter
|
|---|
| 675 | vadduwm @K[3],@K[3],$FOUR
|
|---|
| 676 | vadduwm @K[4],@K[4],$FOUR
|
|---|
| 677 | vadduwm @K[5],@K[5],$FOUR
|
|---|
| 678 |
|
|---|
| 679 | ___
|
|---|
| 680 | if (!$LITTLE_ENDIAN) { for($i=0;$i<16;$i++) { # flip byte order
|
|---|
| 681 | $code.=<<___;
|
|---|
| 682 | mr @t[$i&3],@x[$i]
|
|---|
| 683 | rotlwi @x[$i],@x[$i],8
|
|---|
| 684 | rlwimi @x[$i],@t[$i&3],24,0,7
|
|---|
| 685 | rlwimi @x[$i],@t[$i&3],24,16,23
|
|---|
| 686 | ___
|
|---|
| 687 | } }
|
|---|
| 688 | $code.=<<___;
|
|---|
| 689 | lwz @t[0],0($inp) # load input, aligned or not
|
|---|
| 690 | lwz @t[1],4($inp)
|
|---|
| 691 | lwz @t[2],8($inp)
|
|---|
| 692 | lwz @t[3],12($inp)
|
|---|
| 693 | xor @x[0],@x[0],@t[0] # xor with input
|
|---|
| 694 | lwz @t[0],16($inp)
|
|---|
| 695 | xor @x[1],@x[1],@t[1]
|
|---|
| 696 | lwz @t[1],20($inp)
|
|---|
| 697 | xor @x[2],@x[2],@t[2]
|
|---|
| 698 | lwz @t[2],24($inp)
|
|---|
| 699 | xor @x[3],@x[3],@t[3]
|
|---|
| 700 | lwz @t[3],28($inp)
|
|---|
| 701 | xor @x[4],@x[4],@t[0]
|
|---|
| 702 | lwz @t[0],32($inp)
|
|---|
| 703 | xor @x[5],@x[5],@t[1]
|
|---|
| 704 | lwz @t[1],36($inp)
|
|---|
| 705 | xor @x[6],@x[6],@t[2]
|
|---|
| 706 | lwz @t[2],40($inp)
|
|---|
| 707 | xor @x[7],@x[7],@t[3]
|
|---|
| 708 | lwz @t[3],44($inp)
|
|---|
| 709 | xor @x[8],@x[8],@t[0]
|
|---|
| 710 | lwz @t[0],48($inp)
|
|---|
| 711 | xor @x[9],@x[9],@t[1]
|
|---|
| 712 | lwz @t[1],52($inp)
|
|---|
| 713 | xor @x[10],@x[10],@t[2]
|
|---|
| 714 | lwz @t[2],56($inp)
|
|---|
| 715 | xor @x[11],@x[11],@t[3]
|
|---|
| 716 | lwz @t[3],60($inp)
|
|---|
| 717 | xor @x[12],@x[12],@t[0]
|
|---|
| 718 | stw @x[0],0($out) # store output, aligned or not
|
|---|
| 719 | xor @x[13],@x[13],@t[1]
|
|---|
| 720 | stw @x[1],4($out)
|
|---|
| 721 | xor @x[14],@x[14],@t[2]
|
|---|
| 722 | stw @x[2],8($out)
|
|---|
| 723 | xor @x[15],@x[15],@t[3]
|
|---|
| 724 | stw @x[3],12($out)
|
|---|
| 725 | addi $inp,$inp,64
|
|---|
| 726 | stw @x[4],16($out)
|
|---|
| 727 | li @t[0],16
|
|---|
| 728 | stw @x[5],20($out)
|
|---|
| 729 | li @t[1],32
|
|---|
| 730 | stw @x[6],24($out)
|
|---|
| 731 | li @t[2],48
|
|---|
| 732 | stw @x[7],28($out)
|
|---|
| 733 | li @t[3],64
|
|---|
| 734 | stw @x[8],32($out)
|
|---|
| 735 | stw @x[9],36($out)
|
|---|
| 736 | stw @x[10],40($out)
|
|---|
| 737 | stw @x[11],44($out)
|
|---|
| 738 | stw @x[12],48($out)
|
|---|
| 739 | stw @x[13],52($out)
|
|---|
| 740 | stw @x[14],56($out)
|
|---|
| 741 | stw @x[15],60($out)
|
|---|
| 742 | addi $out,$out,64
|
|---|
| 743 |
|
|---|
| 744 | lvx @D[0],0,$inp # load input
|
|---|
| 745 | lvx @D[1],@t[0],$inp
|
|---|
| 746 | lvx @D[2],@t[1],$inp
|
|---|
| 747 | lvx @D[3],@t[2],$inp
|
|---|
| 748 | lvx @D[4],@t[3],$inp
|
|---|
| 749 | addi $inp,$inp,64
|
|---|
| 750 |
|
|---|
| 751 | ?vperm @D[0],@D[1],@D[0],$inpperm # align input
|
|---|
| 752 | ?vperm @D[1],@D[2],@D[1],$inpperm
|
|---|
| 753 | ?vperm @D[2],@D[3],@D[2],$inpperm
|
|---|
| 754 | ?vperm @D[3],@D[4],@D[3],$inpperm
|
|---|
| 755 | vxor $A0,$A0,@D[0] # xor with input
|
|---|
| 756 | vxor $B0,$B0,@D[1]
|
|---|
| 757 | lvx @D[1],@t[0],$inp # keep loading input
|
|---|
| 758 | vxor $C0,$C0,@D[2]
|
|---|
| 759 | lvx @D[2],@t[1],$inp
|
|---|
| 760 | vxor $D0,$D0,@D[3]
|
|---|
| 761 | lvx @D[3],@t[2],$inp
|
|---|
| 762 | lvx @D[0],@t[3],$inp
|
|---|
| 763 | addi $inp,$inp,64
|
|---|
| 764 | li @t[3],63 # 63 is not a typo
|
|---|
| 765 | vperm $A0,$A0,$A0,$outperm # pre-misalign output
|
|---|
| 766 | vperm $B0,$B0,$B0,$outperm
|
|---|
| 767 | vperm $C0,$C0,$C0,$outperm
|
|---|
| 768 | vperm $D0,$D0,$D0,$outperm
|
|---|
| 769 |
|
|---|
| 770 | ?vperm @D[4],@D[1],@D[4],$inpperm # align input
|
|---|
| 771 | ?vperm @D[1],@D[2],@D[1],$inpperm
|
|---|
| 772 | ?vperm @D[2],@D[3],@D[2],$inpperm
|
|---|
| 773 | ?vperm @D[3],@D[0],@D[3],$inpperm
|
|---|
| 774 | vxor $A1,$A1,@D[4]
|
|---|
| 775 | vxor $B1,$B1,@D[1]
|
|---|
| 776 | lvx @D[1],@t[0],$inp # keep loading input
|
|---|
| 777 | vxor $C1,$C1,@D[2]
|
|---|
| 778 | lvx @D[2],@t[1],$inp
|
|---|
| 779 | vxor $D1,$D1,@D[3]
|
|---|
| 780 | lvx @D[3],@t[2],$inp
|
|---|
| 781 | lvx @D[4],@t[3],$inp # redundant in aligned case
|
|---|
| 782 | addi $inp,$inp,64
|
|---|
| 783 | vperm $A1,$A1,$A1,$outperm # pre-misalign output
|
|---|
| 784 | vperm $B1,$B1,$B1,$outperm
|
|---|
| 785 | vperm $C1,$C1,$C1,$outperm
|
|---|
| 786 | vperm $D1,$D1,$D1,$outperm
|
|---|
| 787 |
|
|---|
| 788 | ?vperm @D[0],@D[1],@D[0],$inpperm # align input
|
|---|
| 789 | ?vperm @D[1],@D[2],@D[1],$inpperm
|
|---|
| 790 | ?vperm @D[2],@D[3],@D[2],$inpperm
|
|---|
| 791 | ?vperm @D[3],@D[4],@D[3],$inpperm
|
|---|
| 792 | vxor $A2,$A2,@D[0]
|
|---|
| 793 | vxor $B2,$B2,@D[1]
|
|---|
| 794 | vxor $C2,$C2,@D[2]
|
|---|
| 795 | vxor $D2,$D2,@D[3]
|
|---|
| 796 | vperm $A2,$A2,$A2,$outperm # pre-misalign output
|
|---|
| 797 | vperm $B2,$B2,$B2,$outperm
|
|---|
| 798 | vperm $C2,$C2,$C2,$outperm
|
|---|
| 799 | vperm $D2,$D2,$D2,$outperm
|
|---|
| 800 |
|
|---|
| 801 | andi. @x[1],$out,15 # is $out aligned?
|
|---|
| 802 | mr @x[0],$out
|
|---|
| 803 |
|
|---|
| 804 | vsel @D[0],$A0,$B0,$outmask # collect pre-misaligned output
|
|---|
| 805 | vsel @D[1],$B0,$C0,$outmask
|
|---|
| 806 | vsel @D[2],$C0,$D0,$outmask
|
|---|
| 807 | vsel @D[3],$D0,$A1,$outmask
|
|---|
| 808 | vsel $B0,$A1,$B1,$outmask
|
|---|
| 809 | vsel $C0,$B1,$C1,$outmask
|
|---|
| 810 | vsel $D0,$C1,$D1,$outmask
|
|---|
| 811 | vsel $A1,$D1,$A2,$outmask
|
|---|
| 812 | vsel $B1,$A2,$B2,$outmask
|
|---|
| 813 | vsel $C1,$B2,$C2,$outmask
|
|---|
| 814 | vsel $D1,$C2,$D2,$outmask
|
|---|
| 815 |
|
|---|
| 816 | #stvx $A0,0,$out # take it easy on the edges
|
|---|
| 817 | stvx @D[0],@t[0],$out # store output
|
|---|
| 818 | stvx @D[1],@t[1],$out
|
|---|
| 819 | stvx @D[2],@t[2],$out
|
|---|
| 820 | addi $out,$out,64
|
|---|
| 821 | stvx @D[3],0,$out
|
|---|
| 822 | stvx $B0,@t[0],$out
|
|---|
| 823 | stvx $C0,@t[1],$out
|
|---|
| 824 | stvx $D0,@t[2],$out
|
|---|
| 825 | addi $out,$out,64
|
|---|
| 826 | stvx $A1,0,$out
|
|---|
| 827 | stvx $B1,@t[0],$out
|
|---|
| 828 | stvx $C1,@t[1],$out
|
|---|
| 829 | stvx $D1,@t[2],$out
|
|---|
| 830 | addi $out,$out,64
|
|---|
| 831 |
|
|---|
| 832 | beq Laligned_vmx
|
|---|
| 833 |
|
|---|
| 834 | sub @x[2],$out,@x[1] # in misaligned case edges
|
|---|
| 835 | li @x[3],0 # are written byte-by-byte
|
|---|
| 836 | Lunaligned_tail_vmx:
|
|---|
| 837 | stvebx $D2,@x[3],@x[2]
|
|---|
| 838 | addi @x[3],@x[3],1
|
|---|
| 839 | cmpw @x[3],@x[1]
|
|---|
| 840 | bne Lunaligned_tail_vmx
|
|---|
| 841 |
|
|---|
| 842 | sub @x[2],@x[0],@x[1]
|
|---|
| 843 | Lunaligned_head_vmx:
|
|---|
| 844 | stvebx $A0,@x[1],@x[2]
|
|---|
| 845 | cmpwi @x[1],15
|
|---|
| 846 | addi @x[1],@x[1],1
|
|---|
| 847 | bne Lunaligned_head_vmx
|
|---|
| 848 |
|
|---|
| 849 | ${UCMP}i $len,255 # done with 256-byte blocks yet?
|
|---|
| 850 | bgt Loop_outer_vmx
|
|---|
| 851 |
|
|---|
| 852 | b Ldone_vmx
|
|---|
| 853 |
|
|---|
| 854 | .align 4
|
|---|
| 855 | Laligned_vmx:
|
|---|
| 856 | stvx $A0,0,@x[0] # head hexaword was not stored
|
|---|
| 857 |
|
|---|
| 858 | ${UCMP}i $len,255 # done with 256-byte blocks yet?
|
|---|
| 859 | bgt Loop_outer_vmx
|
|---|
| 860 | nop
|
|---|
| 861 |
|
|---|
| 862 | Ldone_vmx:
|
|---|
| 863 | ${UCMP}i $len,0 # done yet?
|
|---|
| 864 | bnel __ChaCha20_1x
|
|---|
| 865 |
|
|---|
| 866 | lwz r12,`$FRAME-$SIZE_T*18-4`($sp) # pull vrsave
|
|---|
| 867 | li r10,`15+$LOCALS+64`
|
|---|
| 868 | li r11,`31+$LOCALS+64`
|
|---|
| 869 | mtspr 256,r12 # restore vrsave
|
|---|
| 870 | lvx v23,r10,$sp
|
|---|
| 871 | addi r10,r10,32
|
|---|
| 872 | lvx v24,r11,$sp
|
|---|
| 873 | addi r11,r11,32
|
|---|
| 874 | lvx v25,r10,$sp
|
|---|
| 875 | addi r10,r10,32
|
|---|
| 876 | lvx v26,r11,$sp
|
|---|
| 877 | addi r11,r11,32
|
|---|
| 878 | lvx v27,r10,$sp
|
|---|
| 879 | addi r10,r10,32
|
|---|
| 880 | lvx v28,r11,$sp
|
|---|
| 881 | addi r11,r11,32
|
|---|
| 882 | lvx v29,r10,$sp
|
|---|
| 883 | addi r10,r10,32
|
|---|
| 884 | lvx v30,r11,$sp
|
|---|
| 885 | lvx v31,r10,$sp
|
|---|
| 886 | $POP r0, `$FRAME+$LRSAVE`($sp)
|
|---|
| 887 | $POP r14,`$FRAME-$SIZE_T*18`($sp)
|
|---|
| 888 | $POP r15,`$FRAME-$SIZE_T*17`($sp)
|
|---|
| 889 | $POP r16,`$FRAME-$SIZE_T*16`($sp)
|
|---|
| 890 | $POP r17,`$FRAME-$SIZE_T*15`($sp)
|
|---|
| 891 | $POP r18,`$FRAME-$SIZE_T*14`($sp)
|
|---|
| 892 | $POP r19,`$FRAME-$SIZE_T*13`($sp)
|
|---|
| 893 | $POP r20,`$FRAME-$SIZE_T*12`($sp)
|
|---|
| 894 | $POP r21,`$FRAME-$SIZE_T*11`($sp)
|
|---|
| 895 | $POP r22,`$FRAME-$SIZE_T*10`($sp)
|
|---|
| 896 | $POP r23,`$FRAME-$SIZE_T*9`($sp)
|
|---|
| 897 | $POP r24,`$FRAME-$SIZE_T*8`($sp)
|
|---|
| 898 | $POP r25,`$FRAME-$SIZE_T*7`($sp)
|
|---|
| 899 | $POP r26,`$FRAME-$SIZE_T*6`($sp)
|
|---|
| 900 | $POP r27,`$FRAME-$SIZE_T*5`($sp)
|
|---|
| 901 | $POP r28,`$FRAME-$SIZE_T*4`($sp)
|
|---|
| 902 | $POP r29,`$FRAME-$SIZE_T*3`($sp)
|
|---|
| 903 | $POP r30,`$FRAME-$SIZE_T*2`($sp)
|
|---|
| 904 | $POP r31,`$FRAME-$SIZE_T*1`($sp)
|
|---|
| 905 | mtlr r0
|
|---|
| 906 | addi $sp,$sp,$FRAME
|
|---|
| 907 | blr
|
|---|
| 908 | .long 0
|
|---|
| 909 | .byte 0,12,0x04,1,0x80,18,5,0
|
|---|
| 910 | .long 0
|
|---|
| 911 | .size .ChaCha20_ctr32_vmx,.-.ChaCha20_ctr32_vmx
|
|---|
| 912 | ___
|
|---|
| 913 | }}}
|
|---|
| 914 | {{{
|
|---|
| 915 | my ($xa0,$xa1,$xa2,$xa3, $xb0,$xb1,$xb2,$xb3,
|
|---|
| 916 | $xc0,$xc1,$xc2,$xc3, $xd0,$xd1,$xd2,$xd3) = map("v$_",(0..15));
|
|---|
| 917 | my @K = map("v$_",(16..19));
|
|---|
| 918 | my $CTR = "v26";
|
|---|
| 919 | my ($xt0,$xt1,$xt2,$xt3) = map("v$_",(27..30));
|
|---|
| 920 | my ($sixteen,$twelve,$eight,$seven) = ($xt0,$xt1,$xt2,$xt3);
|
|---|
| 921 | my $beperm = "v31";
|
|---|
| 922 |
|
|---|
| 923 | my ($x00,$x10,$x20,$x30) = (0, map("r$_",(8..10)));
|
|---|
| 924 |
|
|---|
| 925 | my $FRAME=$LOCALS+64+7*16; # 7*16 is for v26-v31 offload
|
|---|
| 926 |
|
|---|
| 927 | sub VSX_lane_ROUND {
|
|---|
| 928 | my ($a0,$b0,$c0,$d0)=@_;
|
|---|
| 929 | my ($a1,$b1,$c1,$d1)=map(($_&~3)+(($_+1)&3),($a0,$b0,$c0,$d0));
|
|---|
| 930 | my ($a2,$b2,$c2,$d2)=map(($_&~3)+(($_+1)&3),($a1,$b1,$c1,$d1));
|
|---|
| 931 | my ($a3,$b3,$c3,$d3)=map(($_&~3)+(($_+1)&3),($a2,$b2,$c2,$d2));
|
|---|
| 932 | my @x=map("\"v$_\"",(0..15));
|
|---|
| 933 |
|
|---|
| 934 | (
|
|---|
| 935 | "&vadduwm (@x[$a0],@x[$a0],@x[$b0])", # Q1
|
|---|
| 936 | "&vadduwm (@x[$a1],@x[$a1],@x[$b1])", # Q2
|
|---|
| 937 | "&vadduwm (@x[$a2],@x[$a2],@x[$b2])", # Q3
|
|---|
| 938 | "&vadduwm (@x[$a3],@x[$a3],@x[$b3])", # Q4
|
|---|
| 939 | "&vxor (@x[$d0],@x[$d0],@x[$a0])",
|
|---|
| 940 | "&vxor (@x[$d1],@x[$d1],@x[$a1])",
|
|---|
| 941 | "&vxor (@x[$d2],@x[$d2],@x[$a2])",
|
|---|
| 942 | "&vxor (@x[$d3],@x[$d3],@x[$a3])",
|
|---|
| 943 | "&vrlw (@x[$d0],@x[$d0],'$sixteen')",
|
|---|
| 944 | "&vrlw (@x[$d1],@x[$d1],'$sixteen')",
|
|---|
| 945 | "&vrlw (@x[$d2],@x[$d2],'$sixteen')",
|
|---|
| 946 | "&vrlw (@x[$d3],@x[$d3],'$sixteen')",
|
|---|
| 947 |
|
|---|
| 948 | "&vadduwm (@x[$c0],@x[$c0],@x[$d0])",
|
|---|
| 949 | "&vadduwm (@x[$c1],@x[$c1],@x[$d1])",
|
|---|
| 950 | "&vadduwm (@x[$c2],@x[$c2],@x[$d2])",
|
|---|
| 951 | "&vadduwm (@x[$c3],@x[$c3],@x[$d3])",
|
|---|
| 952 | "&vxor (@x[$b0],@x[$b0],@x[$c0])",
|
|---|
| 953 | "&vxor (@x[$b1],@x[$b1],@x[$c1])",
|
|---|
| 954 | "&vxor (@x[$b2],@x[$b2],@x[$c2])",
|
|---|
| 955 | "&vxor (@x[$b3],@x[$b3],@x[$c3])",
|
|---|
| 956 | "&vrlw (@x[$b0],@x[$b0],'$twelve')",
|
|---|
| 957 | "&vrlw (@x[$b1],@x[$b1],'$twelve')",
|
|---|
| 958 | "&vrlw (@x[$b2],@x[$b2],'$twelve')",
|
|---|
| 959 | "&vrlw (@x[$b3],@x[$b3],'$twelve')",
|
|---|
| 960 |
|
|---|
| 961 | "&vadduwm (@x[$a0],@x[$a0],@x[$b0])",
|
|---|
| 962 | "&vadduwm (@x[$a1],@x[$a1],@x[$b1])",
|
|---|
| 963 | "&vadduwm (@x[$a2],@x[$a2],@x[$b2])",
|
|---|
| 964 | "&vadduwm (@x[$a3],@x[$a3],@x[$b3])",
|
|---|
| 965 | "&vxor (@x[$d0],@x[$d0],@x[$a0])",
|
|---|
| 966 | "&vxor (@x[$d1],@x[$d1],@x[$a1])",
|
|---|
| 967 | "&vxor (@x[$d2],@x[$d2],@x[$a2])",
|
|---|
| 968 | "&vxor (@x[$d3],@x[$d3],@x[$a3])",
|
|---|
| 969 | "&vrlw (@x[$d0],@x[$d0],'$eight')",
|
|---|
| 970 | "&vrlw (@x[$d1],@x[$d1],'$eight')",
|
|---|
| 971 | "&vrlw (@x[$d2],@x[$d2],'$eight')",
|
|---|
| 972 | "&vrlw (@x[$d3],@x[$d3],'$eight')",
|
|---|
| 973 |
|
|---|
| 974 | "&vadduwm (@x[$c0],@x[$c0],@x[$d0])",
|
|---|
| 975 | "&vadduwm (@x[$c1],@x[$c1],@x[$d1])",
|
|---|
| 976 | "&vadduwm (@x[$c2],@x[$c2],@x[$d2])",
|
|---|
| 977 | "&vadduwm (@x[$c3],@x[$c3],@x[$d3])",
|
|---|
| 978 | "&vxor (@x[$b0],@x[$b0],@x[$c0])",
|
|---|
| 979 | "&vxor (@x[$b1],@x[$b1],@x[$c1])",
|
|---|
| 980 | "&vxor (@x[$b2],@x[$b2],@x[$c2])",
|
|---|
| 981 | "&vxor (@x[$b3],@x[$b3],@x[$c3])",
|
|---|
| 982 | "&vrlw (@x[$b0],@x[$b0],'$seven')",
|
|---|
| 983 | "&vrlw (@x[$b1],@x[$b1],'$seven')",
|
|---|
| 984 | "&vrlw (@x[$b2],@x[$b2],'$seven')",
|
|---|
| 985 | "&vrlw (@x[$b3],@x[$b3],'$seven')"
|
|---|
| 986 | );
|
|---|
| 987 | }
|
|---|
| 988 |
|
|---|
| 989 | $code.=<<___;
|
|---|
| 990 |
|
|---|
| 991 | .globl .ChaCha20_ctr32_vsx
|
|---|
| 992 | .align 5
|
|---|
| 993 | .ChaCha20_ctr32_vsx:
|
|---|
| 994 | $STU $sp,-$FRAME($sp)
|
|---|
| 995 | mflr r0
|
|---|
| 996 | li r10,`15+$LOCALS+64`
|
|---|
| 997 | li r11,`31+$LOCALS+64`
|
|---|
| 998 | mfspr r12,256
|
|---|
| 999 | stvx v26,r10,$sp
|
|---|
| 1000 | addi r10,r10,32
|
|---|
| 1001 | stvx v27,r11,$sp
|
|---|
| 1002 | addi r11,r11,32
|
|---|
| 1003 | stvx v28,r10,$sp
|
|---|
| 1004 | addi r10,r10,32
|
|---|
| 1005 | stvx v29,r11,$sp
|
|---|
| 1006 | addi r11,r11,32
|
|---|
| 1007 | stvx v30,r10,$sp
|
|---|
| 1008 | stvx v31,r11,$sp
|
|---|
| 1009 | stw r12,`$FRAME-4`($sp) # save vrsave
|
|---|
| 1010 | li r12,-4096+63
|
|---|
| 1011 | $PUSH r0, `$FRAME+$LRSAVE`($sp)
|
|---|
| 1012 | mtspr 256,r12 # preserve 29 AltiVec registers
|
|---|
| 1013 |
|
|---|
| 1014 | bl Lconsts # returns pointer Lsigma in r12
|
|---|
| 1015 | lvx_4w @K[0],0,r12 # load sigma
|
|---|
| 1016 | addi r12,r12,0x50
|
|---|
| 1017 | li $x10,16
|
|---|
| 1018 | li $x20,32
|
|---|
| 1019 | li $x30,48
|
|---|
| 1020 | li r11,64
|
|---|
| 1021 |
|
|---|
| 1022 | lvx_4w @K[1],0,$key # load key
|
|---|
| 1023 | lvx_4w @K[2],$x10,$key
|
|---|
| 1024 | lvx_4w @K[3],0,$ctr # load counter
|
|---|
| 1025 |
|
|---|
| 1026 | vxor $xt0,$xt0,$xt0
|
|---|
| 1027 | lvx_4w $xt1,r11,r12
|
|---|
| 1028 | vspltw $CTR,@K[3],0
|
|---|
| 1029 | vsldoi @K[3],@K[3],$xt0,4
|
|---|
| 1030 | vsldoi @K[3],$xt0,@K[3],12 # clear @K[3].word[0]
|
|---|
| 1031 | vadduwm $CTR,$CTR,$xt1
|
|---|
| 1032 |
|
|---|
| 1033 | be?lvsl $beperm,0,$x10 # 0x00..0f
|
|---|
| 1034 | be?vspltisb $xt0,3 # 0x03..03
|
|---|
| 1035 | be?vxor $beperm,$beperm,$xt0 # swap bytes within words
|
|---|
| 1036 |
|
|---|
| 1037 | li r0,10 # inner loop counter
|
|---|
| 1038 | mtctr r0
|
|---|
| 1039 | b Loop_outer_vsx
|
|---|
| 1040 |
|
|---|
| 1041 | .align 5
|
|---|
| 1042 | Loop_outer_vsx:
|
|---|
| 1043 | lvx $xa0,$x00,r12 # load [smashed] sigma
|
|---|
| 1044 | lvx $xa1,$x10,r12
|
|---|
| 1045 | lvx $xa2,$x20,r12
|
|---|
| 1046 | lvx $xa3,$x30,r12
|
|---|
| 1047 |
|
|---|
| 1048 | vspltw $xb0,@K[1],0 # smash the key
|
|---|
| 1049 | vspltw $xb1,@K[1],1
|
|---|
| 1050 | vspltw $xb2,@K[1],2
|
|---|
| 1051 | vspltw $xb3,@K[1],3
|
|---|
| 1052 |
|
|---|
| 1053 | vspltw $xc0,@K[2],0
|
|---|
| 1054 | vspltw $xc1,@K[2],1
|
|---|
| 1055 | vspltw $xc2,@K[2],2
|
|---|
| 1056 | vspltw $xc3,@K[2],3
|
|---|
| 1057 |
|
|---|
| 1058 | vmr $xd0,$CTR # smash the counter
|
|---|
| 1059 | vspltw $xd1,@K[3],1
|
|---|
| 1060 | vspltw $xd2,@K[3],2
|
|---|
| 1061 | vspltw $xd3,@K[3],3
|
|---|
| 1062 |
|
|---|
| 1063 | vspltisw $sixteen,-16 # synthesize constants
|
|---|
| 1064 | vspltisw $twelve,12
|
|---|
| 1065 | vspltisw $eight,8
|
|---|
| 1066 | vspltisw $seven,7
|
|---|
| 1067 |
|
|---|
| 1068 | Loop_vsx:
|
|---|
| 1069 | ___
|
|---|
| 1070 | foreach (&VSX_lane_ROUND(0, 4, 8,12)) { eval; }
|
|---|
| 1071 | foreach (&VSX_lane_ROUND(0, 5,10,15)) { eval; }
|
|---|
| 1072 | $code.=<<___;
|
|---|
| 1073 | bdnz Loop_vsx
|
|---|
| 1074 |
|
|---|
| 1075 | vadduwm $xd0,$xd0,$CTR
|
|---|
| 1076 |
|
|---|
| 1077 | vmrgew $xt0,$xa0,$xa1 # transpose data
|
|---|
| 1078 | vmrgew $xt1,$xa2,$xa3
|
|---|
| 1079 | vmrgow $xa0,$xa0,$xa1
|
|---|
| 1080 | vmrgow $xa2,$xa2,$xa3
|
|---|
| 1081 | vmrgew $xt2,$xb0,$xb1
|
|---|
| 1082 | vmrgew $xt3,$xb2,$xb3
|
|---|
| 1083 | vpermdi $xa1,$xa0,$xa2,0b00
|
|---|
| 1084 | vpermdi $xa3,$xa0,$xa2,0b11
|
|---|
| 1085 | vpermdi $xa0,$xt0,$xt1,0b00
|
|---|
| 1086 | vpermdi $xa2,$xt0,$xt1,0b11
|
|---|
| 1087 |
|
|---|
| 1088 | vmrgow $xb0,$xb0,$xb1
|
|---|
| 1089 | vmrgow $xb2,$xb2,$xb3
|
|---|
| 1090 | vmrgew $xt0,$xc0,$xc1
|
|---|
| 1091 | vmrgew $xt1,$xc2,$xc3
|
|---|
| 1092 | vpermdi $xb1,$xb0,$xb2,0b00
|
|---|
| 1093 | vpermdi $xb3,$xb0,$xb2,0b11
|
|---|
| 1094 | vpermdi $xb0,$xt2,$xt3,0b00
|
|---|
| 1095 | vpermdi $xb2,$xt2,$xt3,0b11
|
|---|
| 1096 |
|
|---|
| 1097 | vmrgow $xc0,$xc0,$xc1
|
|---|
| 1098 | vmrgow $xc2,$xc2,$xc3
|
|---|
| 1099 | vmrgew $xt2,$xd0,$xd1
|
|---|
| 1100 | vmrgew $xt3,$xd2,$xd3
|
|---|
| 1101 | vpermdi $xc1,$xc0,$xc2,0b00
|
|---|
| 1102 | vpermdi $xc3,$xc0,$xc2,0b11
|
|---|
| 1103 | vpermdi $xc0,$xt0,$xt1,0b00
|
|---|
| 1104 | vpermdi $xc2,$xt0,$xt1,0b11
|
|---|
| 1105 |
|
|---|
| 1106 | vmrgow $xd0,$xd0,$xd1
|
|---|
| 1107 | vmrgow $xd2,$xd2,$xd3
|
|---|
| 1108 | vspltisw $xt0,4
|
|---|
| 1109 | vadduwm $CTR,$CTR,$xt0 # next counter value
|
|---|
| 1110 | vpermdi $xd1,$xd0,$xd2,0b00
|
|---|
| 1111 | vpermdi $xd3,$xd0,$xd2,0b11
|
|---|
| 1112 | vpermdi $xd0,$xt2,$xt3,0b00
|
|---|
| 1113 | vpermdi $xd2,$xt2,$xt3,0b11
|
|---|
| 1114 |
|
|---|
| 1115 | vadduwm $xa0,$xa0,@K[0]
|
|---|
| 1116 | vadduwm $xb0,$xb0,@K[1]
|
|---|
| 1117 | vadduwm $xc0,$xc0,@K[2]
|
|---|
| 1118 | vadduwm $xd0,$xd0,@K[3]
|
|---|
| 1119 |
|
|---|
| 1120 | be?vperm $xa0,$xa0,$xa0,$beperm
|
|---|
| 1121 | be?vperm $xb0,$xb0,$xb0,$beperm
|
|---|
| 1122 | be?vperm $xc0,$xc0,$xc0,$beperm
|
|---|
| 1123 | be?vperm $xd0,$xd0,$xd0,$beperm
|
|---|
| 1124 |
|
|---|
| 1125 | ${UCMP}i $len,0x40
|
|---|
| 1126 | blt Ltail_vsx
|
|---|
| 1127 |
|
|---|
| 1128 | lvx_4w $xt0,$x00,$inp
|
|---|
| 1129 | lvx_4w $xt1,$x10,$inp
|
|---|
| 1130 | lvx_4w $xt2,$x20,$inp
|
|---|
| 1131 | lvx_4w $xt3,$x30,$inp
|
|---|
| 1132 |
|
|---|
| 1133 | vxor $xt0,$xt0,$xa0
|
|---|
| 1134 | vxor $xt1,$xt1,$xb0
|
|---|
| 1135 | vxor $xt2,$xt2,$xc0
|
|---|
| 1136 | vxor $xt3,$xt3,$xd0
|
|---|
| 1137 |
|
|---|
| 1138 | stvx_4w $xt0,$x00,$out
|
|---|
| 1139 | stvx_4w $xt1,$x10,$out
|
|---|
| 1140 | addi $inp,$inp,0x40
|
|---|
| 1141 | stvx_4w $xt2,$x20,$out
|
|---|
| 1142 | subi $len,$len,0x40
|
|---|
| 1143 | stvx_4w $xt3,$x30,$out
|
|---|
| 1144 | addi $out,$out,0x40
|
|---|
| 1145 | beq Ldone_vsx
|
|---|
| 1146 |
|
|---|
| 1147 | vadduwm $xa0,$xa1,@K[0]
|
|---|
| 1148 | vadduwm $xb0,$xb1,@K[1]
|
|---|
| 1149 | vadduwm $xc0,$xc1,@K[2]
|
|---|
| 1150 | vadduwm $xd0,$xd1,@K[3]
|
|---|
| 1151 |
|
|---|
| 1152 | be?vperm $xa0,$xa0,$xa0,$beperm
|
|---|
| 1153 | be?vperm $xb0,$xb0,$xb0,$beperm
|
|---|
| 1154 | be?vperm $xc0,$xc0,$xc0,$beperm
|
|---|
| 1155 | be?vperm $xd0,$xd0,$xd0,$beperm
|
|---|
| 1156 |
|
|---|
| 1157 | ${UCMP}i $len,0x40
|
|---|
| 1158 | blt Ltail_vsx
|
|---|
| 1159 |
|
|---|
| 1160 | lvx_4w $xt0,$x00,$inp
|
|---|
| 1161 | lvx_4w $xt1,$x10,$inp
|
|---|
| 1162 | lvx_4w $xt2,$x20,$inp
|
|---|
| 1163 | lvx_4w $xt3,$x30,$inp
|
|---|
| 1164 |
|
|---|
| 1165 | vxor $xt0,$xt0,$xa0
|
|---|
| 1166 | vxor $xt1,$xt1,$xb0
|
|---|
| 1167 | vxor $xt2,$xt2,$xc0
|
|---|
| 1168 | vxor $xt3,$xt3,$xd0
|
|---|
| 1169 |
|
|---|
| 1170 | stvx_4w $xt0,$x00,$out
|
|---|
| 1171 | stvx_4w $xt1,$x10,$out
|
|---|
| 1172 | addi $inp,$inp,0x40
|
|---|
| 1173 | stvx_4w $xt2,$x20,$out
|
|---|
| 1174 | subi $len,$len,0x40
|
|---|
| 1175 | stvx_4w $xt3,$x30,$out
|
|---|
| 1176 | addi $out,$out,0x40
|
|---|
| 1177 | beq Ldone_vsx
|
|---|
| 1178 |
|
|---|
| 1179 | vadduwm $xa0,$xa2,@K[0]
|
|---|
| 1180 | vadduwm $xb0,$xb2,@K[1]
|
|---|
| 1181 | vadduwm $xc0,$xc2,@K[2]
|
|---|
| 1182 | vadduwm $xd0,$xd2,@K[3]
|
|---|
| 1183 |
|
|---|
| 1184 | be?vperm $xa0,$xa0,$xa0,$beperm
|
|---|
| 1185 | be?vperm $xb0,$xb0,$xb0,$beperm
|
|---|
| 1186 | be?vperm $xc0,$xc0,$xc0,$beperm
|
|---|
| 1187 | be?vperm $xd0,$xd0,$xd0,$beperm
|
|---|
| 1188 |
|
|---|
| 1189 | ${UCMP}i $len,0x40
|
|---|
| 1190 | blt Ltail_vsx
|
|---|
| 1191 |
|
|---|
| 1192 | lvx_4w $xt0,$x00,$inp
|
|---|
| 1193 | lvx_4w $xt1,$x10,$inp
|
|---|
| 1194 | lvx_4w $xt2,$x20,$inp
|
|---|
| 1195 | lvx_4w $xt3,$x30,$inp
|
|---|
| 1196 |
|
|---|
| 1197 | vxor $xt0,$xt0,$xa0
|
|---|
| 1198 | vxor $xt1,$xt1,$xb0
|
|---|
| 1199 | vxor $xt2,$xt2,$xc0
|
|---|
| 1200 | vxor $xt3,$xt3,$xd0
|
|---|
| 1201 |
|
|---|
| 1202 | stvx_4w $xt0,$x00,$out
|
|---|
| 1203 | stvx_4w $xt1,$x10,$out
|
|---|
| 1204 | addi $inp,$inp,0x40
|
|---|
| 1205 | stvx_4w $xt2,$x20,$out
|
|---|
| 1206 | subi $len,$len,0x40
|
|---|
| 1207 | stvx_4w $xt3,$x30,$out
|
|---|
| 1208 | addi $out,$out,0x40
|
|---|
| 1209 | beq Ldone_vsx
|
|---|
| 1210 |
|
|---|
| 1211 | vadduwm $xa0,$xa3,@K[0]
|
|---|
| 1212 | vadduwm $xb0,$xb3,@K[1]
|
|---|
| 1213 | vadduwm $xc0,$xc3,@K[2]
|
|---|
| 1214 | vadduwm $xd0,$xd3,@K[3]
|
|---|
| 1215 |
|
|---|
| 1216 | be?vperm $xa0,$xa0,$xa0,$beperm
|
|---|
| 1217 | be?vperm $xb0,$xb0,$xb0,$beperm
|
|---|
| 1218 | be?vperm $xc0,$xc0,$xc0,$beperm
|
|---|
| 1219 | be?vperm $xd0,$xd0,$xd0,$beperm
|
|---|
| 1220 |
|
|---|
| 1221 | ${UCMP}i $len,0x40
|
|---|
| 1222 | blt Ltail_vsx
|
|---|
| 1223 |
|
|---|
| 1224 | lvx_4w $xt0,$x00,$inp
|
|---|
| 1225 | lvx_4w $xt1,$x10,$inp
|
|---|
| 1226 | lvx_4w $xt2,$x20,$inp
|
|---|
| 1227 | lvx_4w $xt3,$x30,$inp
|
|---|
| 1228 |
|
|---|
| 1229 | vxor $xt0,$xt0,$xa0
|
|---|
| 1230 | vxor $xt1,$xt1,$xb0
|
|---|
| 1231 | vxor $xt2,$xt2,$xc0
|
|---|
| 1232 | vxor $xt3,$xt3,$xd0
|
|---|
| 1233 |
|
|---|
| 1234 | stvx_4w $xt0,$x00,$out
|
|---|
| 1235 | stvx_4w $xt1,$x10,$out
|
|---|
| 1236 | addi $inp,$inp,0x40
|
|---|
| 1237 | stvx_4w $xt2,$x20,$out
|
|---|
| 1238 | subi $len,$len,0x40
|
|---|
| 1239 | stvx_4w $xt3,$x30,$out
|
|---|
| 1240 | addi $out,$out,0x40
|
|---|
| 1241 | mtctr r0
|
|---|
| 1242 | bne Loop_outer_vsx
|
|---|
| 1243 |
|
|---|
| 1244 | Ldone_vsx:
|
|---|
| 1245 | lwz r12,`$FRAME-4`($sp) # pull vrsave
|
|---|
| 1246 | li r10,`15+$LOCALS+64`
|
|---|
| 1247 | li r11,`31+$LOCALS+64`
|
|---|
| 1248 | $POP r0, `$FRAME+$LRSAVE`($sp)
|
|---|
| 1249 | mtspr 256,r12 # restore vrsave
|
|---|
| 1250 | lvx v26,r10,$sp
|
|---|
| 1251 | addi r10,r10,32
|
|---|
| 1252 | lvx v27,r11,$sp
|
|---|
| 1253 | addi r11,r11,32
|
|---|
| 1254 | lvx v28,r10,$sp
|
|---|
| 1255 | addi r10,r10,32
|
|---|
| 1256 | lvx v29,r11,$sp
|
|---|
| 1257 | addi r11,r11,32
|
|---|
| 1258 | lvx v30,r10,$sp
|
|---|
| 1259 | lvx v31,r11,$sp
|
|---|
| 1260 | mtlr r0
|
|---|
| 1261 | addi $sp,$sp,$FRAME
|
|---|
| 1262 | blr
|
|---|
| 1263 |
|
|---|
| 1264 | .align 4
|
|---|
| 1265 | Ltail_vsx:
|
|---|
| 1266 | addi r11,$sp,$LOCALS
|
|---|
| 1267 | mtctr $len
|
|---|
| 1268 | stvx_4w $xa0,$x00,r11 # offload block to stack
|
|---|
| 1269 | stvx_4w $xb0,$x10,r11
|
|---|
| 1270 | stvx_4w $xc0,$x20,r11
|
|---|
| 1271 | stvx_4w $xd0,$x30,r11
|
|---|
| 1272 | subi r12,r11,1 # prepare for *++ptr
|
|---|
| 1273 | subi $inp,$inp,1
|
|---|
| 1274 | subi $out,$out,1
|
|---|
| 1275 |
|
|---|
| 1276 | Loop_tail_vsx:
|
|---|
| 1277 | lbzu r6,1(r12)
|
|---|
| 1278 | lbzu r7,1($inp)
|
|---|
| 1279 | xor r6,r6,r7
|
|---|
| 1280 | stbu r6,1($out)
|
|---|
| 1281 | bdnz Loop_tail_vsx
|
|---|
| 1282 |
|
|---|
| 1283 | stvx_4w $K[0],$x00,r11 # wipe copy of the block
|
|---|
| 1284 | stvx_4w $K[0],$x10,r11
|
|---|
| 1285 | stvx_4w $K[0],$x20,r11
|
|---|
| 1286 | stvx_4w $K[0],$x30,r11
|
|---|
| 1287 |
|
|---|
| 1288 | b Ldone_vsx
|
|---|
| 1289 | .long 0
|
|---|
| 1290 | .byte 0,12,0x04,1,0x80,0,5,0
|
|---|
| 1291 | .long 0
|
|---|
| 1292 | .size .ChaCha20_ctr32_vsx,.-.ChaCha20_ctr32_vsx
|
|---|
| 1293 | ___
|
|---|
| 1294 | }}}
|
|---|
| 1295 | $code.=<<___;
|
|---|
| 1296 | .align 5
|
|---|
| 1297 | Lconsts:
|
|---|
| 1298 | mflr r0
|
|---|
| 1299 | bcl 20,31,\$+4
|
|---|
| 1300 | mflr r12 #vvvvv "distance between . and Lsigma
|
|---|
| 1301 | addi r12,r12,`64-8`
|
|---|
| 1302 | mtlr r0
|
|---|
| 1303 | blr
|
|---|
| 1304 | .long 0
|
|---|
| 1305 | .byte 0,12,0x14,0,0,0,0,0
|
|---|
| 1306 | .space `64-9*4`
|
|---|
| 1307 | Lsigma:
|
|---|
| 1308 | .long 0x61707865,0x3320646e,0x79622d32,0x6b206574
|
|---|
| 1309 | .long 1,0,0,0
|
|---|
| 1310 | .long 4,0,0,0
|
|---|
| 1311 | ___
|
|---|
| 1312 | $code.=<<___ if ($LITTLE_ENDIAN);
|
|---|
| 1313 | .long 0x0e0f0c0d,0x0a0b0809,0x06070405,0x02030001
|
|---|
| 1314 | .long 0x0d0e0f0c,0x090a0b08,0x05060704,0x01020300
|
|---|
| 1315 | ___
|
|---|
| 1316 | $code.=<<___ if (!$LITTLE_ENDIAN); # flipped words
|
|---|
| 1317 | .long 0x02030001,0x06070405,0x0a0b0809,0x0e0f0c0d
|
|---|
| 1318 | .long 0x01020300,0x05060704,0x090a0b08,0x0d0e0f0c
|
|---|
| 1319 | ___
|
|---|
| 1320 | $code.=<<___;
|
|---|
| 1321 | .long 0x61707865,0x61707865,0x61707865,0x61707865
|
|---|
| 1322 | .long 0x3320646e,0x3320646e,0x3320646e,0x3320646e
|
|---|
| 1323 | .long 0x79622d32,0x79622d32,0x79622d32,0x79622d32
|
|---|
| 1324 | .long 0x6b206574,0x6b206574,0x6b206574,0x6b206574
|
|---|
| 1325 | .long 0,1,2,3
|
|---|
| 1326 | .asciz "ChaCha20 for PowerPC/AltiVec, CRYPTOGAMS by <appro\@openssl.org>"
|
|---|
| 1327 | .align 2
|
|---|
| 1328 | ___
|
|---|
| 1329 |
|
|---|
| 1330 | foreach (split("\n",$code)) {
|
|---|
| 1331 | s/\`([^\`]*)\`/eval $1/ge;
|
|---|
| 1332 |
|
|---|
| 1333 | # instructions prefixed with '?' are endian-specific and need
|
|---|
| 1334 | # to be adjusted accordingly...
|
|---|
| 1335 | if ($flavour !~ /le$/) { # big-endian
|
|---|
| 1336 | s/be\?// or
|
|---|
| 1337 | s/le\?/#le#/ or
|
|---|
| 1338 | s/\?lvsr/lvsl/ or
|
|---|
| 1339 | s/\?lvsl/lvsr/ or
|
|---|
| 1340 | s/\?(vperm\s+v[0-9]+,\s*)(v[0-9]+,\s*)(v[0-9]+,\s*)(v[0-9]+)/$1$3$2$4/ or
|
|---|
| 1341 | s/vrldoi(\s+v[0-9]+,\s*)(v[0-9]+,)\s*([0-9]+)/vsldoi$1$2$2 16-$3/;
|
|---|
| 1342 | } else { # little-endian
|
|---|
| 1343 | s/le\?// or
|
|---|
| 1344 | s/be\?/#be#/ or
|
|---|
| 1345 | s/\?([a-z]+)/$1/ or
|
|---|
| 1346 | s/vrldoi(\s+v[0-9]+,\s*)(v[0-9]+,)\s*([0-9]+)/vsldoi$1$2$2 $3/;
|
|---|
| 1347 | }
|
|---|
| 1348 |
|
|---|
| 1349 | print $_,"\n";
|
|---|
| 1350 | }
|
|---|
| 1351 |
|
|---|
| 1352 | close STDOUT or die "error closing STDOUT: $!";
|
|---|
