| 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 OpenSSL license (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 <[email protected]> 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 | # This module implements Poly1305 hash for PowerPC FPU.
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| 18 | #
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| 19 | # June 2015
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| 20 | #
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| 21 | # Numbers are cycles per processed byte with poly1305_blocks alone,
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| 22 | # and improvement coefficients relative to gcc-generated code.
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| 23 | #
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| 24 | # Freescale e300 9.78/+30%
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| 25 | # PPC74x0 6.92/+50%
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| 26 | # PPC970 6.03/+80%
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| 27 | # POWER7 3.50/+30%
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| 28 | # POWER8 3.75/+10%
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| 29 |
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| 30 | $flavour = shift;
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| 31 |
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| 32 | if ($flavour =~ /64/) {
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| 33 | $SIZE_T =8;
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| 34 | $LRSAVE =2*$SIZE_T;
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| 35 | $UCMP ="cmpld";
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| 36 | $STU ="stdu";
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| 37 | $POP ="ld";
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| 38 | $PUSH ="std";
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| 39 | } elsif ($flavour =~ /32/) {
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| 40 | $SIZE_T =4;
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| 41 | $LRSAVE =$SIZE_T;
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| 42 | $UCMP ="cmplw";
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| 43 | $STU ="stwu";
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| 44 | $POP ="lwz";
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| 45 | $PUSH ="stw";
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| 46 | } else { die "nonsense $flavour"; }
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| 47 |
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| 48 | $LITTLE_ENDIAN = ($flavour=~/le$/) ? 4 : 0;
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| 49 |
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| 50 | $LWXLE = $LITTLE_ENDIAN ? "lwzx" : "lwbrx";
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| 51 |
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| 52 | $0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
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| 53 | ( $xlate="${dir}ppc-xlate.pl" and -f $xlate ) or
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| 54 | ( $xlate="${dir}../../perlasm/ppc-xlate.pl" and -f $xlate) or
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| 55 | die "can't locate ppc-xlate.pl";
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| 56 |
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| 57 | open STDOUT,"| $^X $xlate $flavour ".shift || die "can't call $xlate: $!";
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| 58 |
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| 59 | $LOCALS=6*$SIZE_T;
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| 60 | $FRAME=$LOCALS+6*8+18*8;
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| 61 |
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| 62 | my $sp="r1";
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| 63 |
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| 64 | my ($ctx,$inp,$len,$padbit) = map("r$_",(3..6));
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| 65 | my ($in0,$in1,$in2,$in3,$i1,$i2,$i3) = map("r$_",(7..12,6));
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| 66 |
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| 67 | my ($h0lo,$h0hi,$h1lo,$h1hi,$h2lo,$h2hi,$h3lo,$h3hi,
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| 68 | $two0,$two32,$two64,$two96,$two130,$five_two130,
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| 69 | $r0lo,$r0hi,$r1lo,$r1hi,$r2lo,$r2hi,
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| 70 | $s2lo,$s2hi,$s3lo,$s3hi,
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| 71 | $c0lo,$c0hi,$c1lo,$c1hi,$c2lo,$c2hi,$c3lo,$c3hi) = map("f$_",(0..31));
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| 72 | # borrowings
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| 73 | my ($r3lo,$r3hi,$s1lo,$s1hi) = ($c0lo,$c0hi,$c1lo,$c1hi);
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| 74 | my ($x0,$x1,$x2,$x3) = ($c2lo,$c2hi,$c3lo,$c3hi);
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| 75 | my ($y0,$y1,$y2,$y3) = ($c3lo,$c3hi,$c1lo,$c1hi);
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| 76 |
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| 77 | $code.=<<___;
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| 78 | .machine "any"
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| 79 | .text
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| 80 |
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| 81 | .globl .poly1305_init_fpu
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| 82 | .align 6
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| 83 | .poly1305_init_fpu:
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| 84 | $STU $sp,-$LOCALS($sp) # minimal frame
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| 85 | mflr $padbit
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| 86 | $PUSH $padbit,`$LOCALS+$LRSAVE`($sp)
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| 87 |
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| 88 | bl LPICmeup
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| 89 |
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| 90 | xor r0,r0,r0
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| 91 | mtlr $padbit # restore lr
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| 92 |
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| 93 | lfd $two0,8*0($len) # load constants
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| 94 | lfd $two32,8*1($len)
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| 95 | lfd $two64,8*2($len)
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| 96 | lfd $two96,8*3($len)
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| 97 | lfd $two130,8*4($len)
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| 98 | lfd $five_two130,8*5($len)
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| 99 |
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| 100 | stfd $two0,8*0($ctx) # initial hash value, biased 0
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| 101 | stfd $two32,8*1($ctx)
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| 102 | stfd $two64,8*2($ctx)
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| 103 | stfd $two96,8*3($ctx)
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| 104 |
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| 105 | $UCMP $inp,r0
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| 106 | beq- Lno_key
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| 107 |
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| 108 | lfd $h3lo,8*13($len) # new fpscr
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| 109 | mffs $h3hi # old fpscr
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| 110 |
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| 111 | stfd $two0,8*4($ctx) # key "template"
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| 112 | stfd $two32,8*5($ctx)
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| 113 | stfd $two64,8*6($ctx)
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| 114 | stfd $two96,8*7($ctx)
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| 115 |
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| 116 | li $in1,4
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| 117 | li $in2,8
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| 118 | li $in3,12
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| 119 | $LWXLE $in0,0,$inp # load key
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| 120 | $LWXLE $in1,$in1,$inp
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| 121 | $LWXLE $in2,$in2,$inp
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| 122 | $LWXLE $in3,$in3,$inp
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| 123 |
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| 124 | lis $i1,0xf000 # 0xf0000000
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| 125 | ori $i2,$i1,3 # 0xf0000003
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| 126 | andc $in0,$in0,$i1 # &=0x0fffffff
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| 127 | andc $in1,$in1,$i2 # &=0x0ffffffc
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| 128 | andc $in2,$in2,$i2
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| 129 | andc $in3,$in3,$i2
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| 130 |
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| 131 | stw $in0,`8*4+(4^$LITTLE_ENDIAN)`($ctx) # fill "template"
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| 132 | stw $in1,`8*5+(4^$LITTLE_ENDIAN)`($ctx)
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| 133 | stw $in2,`8*6+(4^$LITTLE_ENDIAN)`($ctx)
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| 134 | stw $in3,`8*7+(4^$LITTLE_ENDIAN)`($ctx)
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| 135 |
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| 136 | mtfsf 255,$h3lo # fpscr
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| 137 | stfd $two0,8*18($ctx) # copy constants to context
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| 138 | stfd $two32,8*19($ctx)
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| 139 | stfd $two64,8*20($ctx)
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| 140 | stfd $two96,8*21($ctx)
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| 141 | stfd $two130,8*22($ctx)
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| 142 | stfd $five_two130,8*23($ctx)
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| 143 |
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| 144 | lfd $h0lo,8*4($ctx) # load [biased] key
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| 145 | lfd $h1lo,8*5($ctx)
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| 146 | lfd $h2lo,8*6($ctx)
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| 147 | lfd $h3lo,8*7($ctx)
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| 148 |
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| 149 | fsub $h0lo,$h0lo,$two0 # r0
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| 150 | fsub $h1lo,$h1lo,$two32 # r1
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| 151 | fsub $h2lo,$h2lo,$two64 # r2
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| 152 | fsub $h3lo,$h3lo,$two96 # r3
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| 153 |
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| 154 | lfd $two0,8*6($len) # more constants
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| 155 | lfd $two32,8*7($len)
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| 156 | lfd $two64,8*8($len)
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| 157 | lfd $two96,8*9($len)
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| 158 |
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| 159 | fmul $h1hi,$h1lo,$five_two130 # s1
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| 160 | fmul $h2hi,$h2lo,$five_two130 # s2
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| 161 | stfd $h3hi,8*15($ctx) # borrow slot for original fpscr
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| 162 | fmul $h3hi,$h3lo,$five_two130 # s3
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| 163 |
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| 164 | fadd $h0hi,$h0lo,$two0
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| 165 | stfd $h1hi,8*12($ctx) # put aside for now
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| 166 | fadd $h1hi,$h1lo,$two32
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| 167 | stfd $h2hi,8*13($ctx)
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| 168 | fadd $h2hi,$h2lo,$two64
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| 169 | stfd $h3hi,8*14($ctx)
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| 170 | fadd $h3hi,$h3lo,$two96
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| 171 |
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| 172 | fsub $h0hi,$h0hi,$two0
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| 173 | fsub $h1hi,$h1hi,$two32
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| 174 | fsub $h2hi,$h2hi,$two64
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| 175 | fsub $h3hi,$h3hi,$two96
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| 176 |
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| 177 | lfd $two0,8*10($len) # more constants
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| 178 | lfd $two32,8*11($len)
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| 179 | lfd $two64,8*12($len)
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| 180 |
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| 181 | fsub $h0lo,$h0lo,$h0hi
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| 182 | fsub $h1lo,$h1lo,$h1hi
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| 183 | fsub $h2lo,$h2lo,$h2hi
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| 184 | fsub $h3lo,$h3lo,$h3hi
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| 185 |
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| 186 | stfd $h0hi,8*5($ctx) # r0hi
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| 187 | stfd $h1hi,8*7($ctx) # r1hi
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| 188 | stfd $h2hi,8*9($ctx) # r2hi
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| 189 | stfd $h3hi,8*11($ctx) # r3hi
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| 190 |
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| 191 | stfd $h0lo,8*4($ctx) # r0lo
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| 192 | stfd $h1lo,8*6($ctx) # r1lo
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| 193 | stfd $h2lo,8*8($ctx) # r2lo
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| 194 | stfd $h3lo,8*10($ctx) # r3lo
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| 195 |
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| 196 | lfd $h1lo,8*12($ctx) # s1
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| 197 | lfd $h2lo,8*13($ctx) # s2
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| 198 | lfd $h3lo,8*14($ctx) # s3
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| 199 | lfd $h0lo,8*15($ctx) # pull original fpscr
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| 200 |
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| 201 | fadd $h1hi,$h1lo,$two0
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| 202 | fadd $h2hi,$h2lo,$two32
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| 203 | fadd $h3hi,$h3lo,$two64
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| 204 |
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| 205 | fsub $h1hi,$h1hi,$two0
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| 206 | fsub $h2hi,$h2hi,$two32
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| 207 | fsub $h3hi,$h3hi,$two64
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| 208 |
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| 209 | fsub $h1lo,$h1lo,$h1hi
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| 210 | fsub $h2lo,$h2lo,$h2hi
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| 211 | fsub $h3lo,$h3lo,$h3hi
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| 212 |
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| 213 | stfd $h1hi,8*13($ctx) # s1hi
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| 214 | stfd $h2hi,8*15($ctx) # s2hi
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| 215 | stfd $h3hi,8*17($ctx) # s3hi
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| 216 |
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| 217 | stfd $h1lo,8*12($ctx) # s1lo
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| 218 | stfd $h2lo,8*14($ctx) # s2lo
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| 219 | stfd $h3lo,8*16($ctx) # s3lo
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| 220 |
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| 221 | mtfsf 255,$h0lo # restore fpscr
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| 222 | Lno_key:
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| 223 | xor r3,r3,r3
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| 224 | addi $sp,$sp,$LOCALS
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| 225 | blr
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| 226 | .long 0
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| 227 | .byte 0,12,4,1,0x80,0,2,0
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| 228 | .size .poly1305_init_fpu,.-.poly1305_init_fpu
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| 229 |
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| 230 | .globl .poly1305_blocks_fpu
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| 231 | .align 4
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| 232 | .poly1305_blocks_fpu:
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| 233 | srwi. $len,$len,4
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| 234 | beq- Labort
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| 235 |
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| 236 | $STU $sp,-$FRAME($sp)
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| 237 | mflr r0
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| 238 | stfd f14,`$FRAME-8*18`($sp)
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| 239 | stfd f15,`$FRAME-8*17`($sp)
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| 240 | stfd f16,`$FRAME-8*16`($sp)
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| 241 | stfd f17,`$FRAME-8*15`($sp)
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| 242 | stfd f18,`$FRAME-8*14`($sp)
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| 243 | stfd f19,`$FRAME-8*13`($sp)
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| 244 | stfd f20,`$FRAME-8*12`($sp)
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| 245 | stfd f21,`$FRAME-8*11`($sp)
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| 246 | stfd f22,`$FRAME-8*10`($sp)
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| 247 | stfd f23,`$FRAME-8*9`($sp)
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| 248 | stfd f24,`$FRAME-8*8`($sp)
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| 249 | stfd f25,`$FRAME-8*7`($sp)
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| 250 | stfd f26,`$FRAME-8*6`($sp)
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| 251 | stfd f27,`$FRAME-8*5`($sp)
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| 252 | stfd f28,`$FRAME-8*4`($sp)
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| 253 | stfd f29,`$FRAME-8*3`($sp)
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| 254 | stfd f30,`$FRAME-8*2`($sp)
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| 255 | stfd f31,`$FRAME-8*1`($sp)
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| 256 | $PUSH r0,`$FRAME+$LRSAVE`($sp)
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| 257 |
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| 258 | xor r0,r0,r0
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| 259 | li $in3,1
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| 260 | mtctr $len
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| 261 | neg $len,$len
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| 262 | stw r0,`$LOCALS+8*4+(0^$LITTLE_ENDIAN)`($sp)
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| 263 | stw $in3,`$LOCALS+8*4+(4^$LITTLE_ENDIAN)`($sp)
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| 264 |
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| 265 | lfd $two0,8*18($ctx) # load constants
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| 266 | lfd $two32,8*19($ctx)
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| 267 | lfd $two64,8*20($ctx)
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| 268 | lfd $two96,8*21($ctx)
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| 269 | lfd $two130,8*22($ctx)
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| 270 | lfd $five_two130,8*23($ctx)
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| 271 |
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| 272 | lfd $h0lo,8*0($ctx) # load [biased] hash value
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| 273 | lfd $h1lo,8*1($ctx)
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| 274 | lfd $h2lo,8*2($ctx)
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| 275 | lfd $h3lo,8*3($ctx)
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| 276 |
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| 277 | stfd $two0,`$LOCALS+8*0`($sp) # input "template"
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| 278 | oris $in3,$padbit,`(1023+52+96)<<4`
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| 279 | stfd $two32,`$LOCALS+8*1`($sp)
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| 280 | stfd $two64,`$LOCALS+8*2`($sp)
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| 281 | stw $in3,`$LOCALS+8*3+(0^$LITTLE_ENDIAN)`($sp)
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| 282 |
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| 283 | li $i1,4
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| 284 | li $i2,8
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| 285 | li $i3,12
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| 286 | $LWXLE $in0,0,$inp # load input
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| 287 | $LWXLE $in1,$i1,$inp
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| 288 | $LWXLE $in2,$i2,$inp
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| 289 | $LWXLE $in3,$i3,$inp
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| 290 | addi $inp,$inp,16
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| 291 |
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| 292 | stw $in0,`$LOCALS+8*0+(4^$LITTLE_ENDIAN)`($sp) # fill "template"
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| 293 | stw $in1,`$LOCALS+8*1+(4^$LITTLE_ENDIAN)`($sp)
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| 294 | stw $in2,`$LOCALS+8*2+(4^$LITTLE_ENDIAN)`($sp)
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| 295 | stw $in3,`$LOCALS+8*3+(4^$LITTLE_ENDIAN)`($sp)
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| 296 |
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| 297 | mffs $x0 # original fpscr
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| 298 | lfd $x1,`$LOCALS+8*4`($sp) # new fpscr
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| 299 | lfd $r0lo,8*4($ctx) # load key
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| 300 | lfd $r0hi,8*5($ctx)
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| 301 | lfd $r1lo,8*6($ctx)
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| 302 | lfd $r1hi,8*7($ctx)
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| 303 | lfd $r2lo,8*8($ctx)
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| 304 | lfd $r2hi,8*9($ctx)
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| 305 | lfd $r3lo,8*10($ctx)
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| 306 | lfd $r3hi,8*11($ctx)
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| 307 | lfd $s1lo,8*12($ctx)
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| 308 | lfd $s1hi,8*13($ctx)
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| 309 | lfd $s2lo,8*14($ctx)
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| 310 | lfd $s2hi,8*15($ctx)
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| 311 | lfd $s3lo,8*16($ctx)
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| 312 | lfd $s3hi,8*17($ctx)
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| 313 |
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| 314 | stfd $x0,`$LOCALS+8*4`($sp) # save original fpscr
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| 315 | mtfsf 255,$x1
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| 316 |
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| 317 | addic $len,$len,1
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| 318 | addze r0,r0
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| 319 | slwi. r0,r0,4
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| 320 | sub $inp,$inp,r0 # conditional rewind
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| 321 |
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| 322 | lfd $x0,`$LOCALS+8*0`($sp)
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| 323 | lfd $x1,`$LOCALS+8*1`($sp)
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| 324 | lfd $x2,`$LOCALS+8*2`($sp)
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| 325 | lfd $x3,`$LOCALS+8*3`($sp)
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| 326 |
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| 327 | fsub $h0lo,$h0lo,$two0 # de-bias hash value
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| 328 | $LWXLE $in0,0,$inp # modulo-scheduled input load
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| 329 | fsub $h1lo,$h1lo,$two32
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| 330 | $LWXLE $in1,$i1,$inp
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| 331 | fsub $h2lo,$h2lo,$two64
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| 332 | $LWXLE $in2,$i2,$inp
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| 333 | fsub $h3lo,$h3lo,$two96
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| 334 | $LWXLE $in3,$i3,$inp
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| 335 |
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| 336 | fsub $x0,$x0,$two0 # de-bias input
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| 337 | addi $inp,$inp,16
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| 338 | fsub $x1,$x1,$two32
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| 339 | fsub $x2,$x2,$two64
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| 340 | fsub $x3,$x3,$two96
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| 341 |
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| 342 | fadd $x0,$x0,$h0lo # accumulate input
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| 343 | stw $in0,`$LOCALS+8*0+(4^$LITTLE_ENDIAN)`($sp)
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| 344 | fadd $x1,$x1,$h1lo
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| 345 | stw $in1,`$LOCALS+8*1+(4^$LITTLE_ENDIAN)`($sp)
|
|---|
| 346 | fadd $x2,$x2,$h2lo
|
|---|
| 347 | stw $in2,`$LOCALS+8*2+(4^$LITTLE_ENDIAN)`($sp)
|
|---|
| 348 | fadd $x3,$x3,$h3lo
|
|---|
| 349 | stw $in3,`$LOCALS+8*3+(4^$LITTLE_ENDIAN)`($sp)
|
|---|
| 350 |
|
|---|
| 351 | b Lentry
|
|---|
| 352 |
|
|---|
| 353 | .align 4
|
|---|
| 354 | Loop:
|
|---|
| 355 | fsub $y0,$y0,$two0 # de-bias input
|
|---|
| 356 | addic $len,$len,1
|
|---|
| 357 | fsub $y1,$y1,$two32
|
|---|
| 358 | addze r0,r0
|
|---|
| 359 | fsub $y2,$y2,$two64
|
|---|
| 360 | slwi. r0,r0,4
|
|---|
| 361 | fsub $y3,$y3,$two96
|
|---|
| 362 | sub $inp,$inp,r0 # conditional rewind
|
|---|
| 363 |
|
|---|
| 364 | fadd $h0lo,$h0lo,$y0 # accumulate input
|
|---|
| 365 | fadd $h0hi,$h0hi,$y1
|
|---|
| 366 | fadd $h2lo,$h2lo,$y2
|
|---|
| 367 | fadd $h2hi,$h2hi,$y3
|
|---|
| 368 |
|
|---|
| 369 | ######################################### base 2^48 -> base 2^32
|
|---|
| 370 | fadd $c1lo,$h1lo,$two64
|
|---|
| 371 | $LWXLE $in0,0,$inp # modulo-scheduled input load
|
|---|
| 372 | fadd $c1hi,$h1hi,$two64
|
|---|
| 373 | $LWXLE $in1,$i1,$inp
|
|---|
| 374 | fadd $c3lo,$h3lo,$two130
|
|---|
| 375 | $LWXLE $in2,$i2,$inp
|
|---|
| 376 | fadd $c3hi,$h3hi,$two130
|
|---|
| 377 | $LWXLE $in3,$i3,$inp
|
|---|
| 378 | fadd $c0lo,$h0lo,$two32
|
|---|
| 379 | addi $inp,$inp,16
|
|---|
| 380 | fadd $c0hi,$h0hi,$two32
|
|---|
| 381 | fadd $c2lo,$h2lo,$two96
|
|---|
| 382 | fadd $c2hi,$h2hi,$two96
|
|---|
| 383 |
|
|---|
| 384 | fsub $c1lo,$c1lo,$two64
|
|---|
| 385 | stw $in0,`$LOCALS+8*0+(4^$LITTLE_ENDIAN)`($sp) # fill "template"
|
|---|
| 386 | fsub $c1hi,$c1hi,$two64
|
|---|
| 387 | stw $in1,`$LOCALS+8*1+(4^$LITTLE_ENDIAN)`($sp)
|
|---|
| 388 | fsub $c3lo,$c3lo,$two130
|
|---|
| 389 | stw $in2,`$LOCALS+8*2+(4^$LITTLE_ENDIAN)`($sp)
|
|---|
| 390 | fsub $c3hi,$c3hi,$two130
|
|---|
| 391 | stw $in3,`$LOCALS+8*3+(4^$LITTLE_ENDIAN)`($sp)
|
|---|
| 392 | fsub $c0lo,$c0lo,$two32
|
|---|
| 393 | fsub $c0hi,$c0hi,$two32
|
|---|
| 394 | fsub $c2lo,$c2lo,$two96
|
|---|
| 395 | fsub $c2hi,$c2hi,$two96
|
|---|
| 396 |
|
|---|
| 397 | fsub $h1lo,$h1lo,$c1lo
|
|---|
| 398 | fsub $h1hi,$h1hi,$c1hi
|
|---|
| 399 | fsub $h3lo,$h3lo,$c3lo
|
|---|
| 400 | fsub $h3hi,$h3hi,$c3hi
|
|---|
| 401 | fsub $h2lo,$h2lo,$c2lo
|
|---|
| 402 | fsub $h2hi,$h2hi,$c2hi
|
|---|
| 403 | fsub $h0lo,$h0lo,$c0lo
|
|---|
| 404 | fsub $h0hi,$h0hi,$c0hi
|
|---|
| 405 |
|
|---|
| 406 | fadd $h1lo,$h1lo,$c0lo
|
|---|
| 407 | fadd $h1hi,$h1hi,$c0hi
|
|---|
| 408 | fadd $h3lo,$h3lo,$c2lo
|
|---|
| 409 | fadd $h3hi,$h3hi,$c2hi
|
|---|
| 410 | fadd $h2lo,$h2lo,$c1lo
|
|---|
| 411 | fadd $h2hi,$h2hi,$c1hi
|
|---|
| 412 | fmadd $h0lo,$c3lo,$five_two130,$h0lo
|
|---|
| 413 | fmadd $h0hi,$c3hi,$five_two130,$h0hi
|
|---|
| 414 |
|
|---|
| 415 | fadd $x1,$h1lo,$h1hi
|
|---|
| 416 | lfd $s1lo,8*12($ctx) # reload constants
|
|---|
| 417 | fadd $x3,$h3lo,$h3hi
|
|---|
| 418 | lfd $s1hi,8*13($ctx)
|
|---|
| 419 | fadd $x2,$h2lo,$h2hi
|
|---|
| 420 | lfd $r3lo,8*10($ctx)
|
|---|
| 421 | fadd $x0,$h0lo,$h0hi
|
|---|
| 422 | lfd $r3hi,8*11($ctx)
|
|---|
| 423 | Lentry:
|
|---|
| 424 | fmul $h0lo,$s3lo,$x1
|
|---|
| 425 | fmul $h0hi,$s3hi,$x1
|
|---|
| 426 | fmul $h2lo,$r1lo,$x1
|
|---|
| 427 | fmul $h2hi,$r1hi,$x1
|
|---|
| 428 | fmul $h1lo,$r0lo,$x1
|
|---|
| 429 | fmul $h1hi,$r0hi,$x1
|
|---|
| 430 | fmul $h3lo,$r2lo,$x1
|
|---|
| 431 | fmul $h3hi,$r2hi,$x1
|
|---|
| 432 |
|
|---|
| 433 | fmadd $h0lo,$s1lo,$x3,$h0lo
|
|---|
| 434 | fmadd $h0hi,$s1hi,$x3,$h0hi
|
|---|
| 435 | fmadd $h2lo,$s3lo,$x3,$h2lo
|
|---|
| 436 | fmadd $h2hi,$s3hi,$x3,$h2hi
|
|---|
| 437 | fmadd $h1lo,$s2lo,$x3,$h1lo
|
|---|
| 438 | fmadd $h1hi,$s2hi,$x3,$h1hi
|
|---|
| 439 | fmadd $h3lo,$r0lo,$x3,$h3lo
|
|---|
| 440 | fmadd $h3hi,$r0hi,$x3,$h3hi
|
|---|
| 441 |
|
|---|
| 442 | fmadd $h0lo,$s2lo,$x2,$h0lo
|
|---|
| 443 | fmadd $h0hi,$s2hi,$x2,$h0hi
|
|---|
| 444 | fmadd $h2lo,$r0lo,$x2,$h2lo
|
|---|
| 445 | fmadd $h2hi,$r0hi,$x2,$h2hi
|
|---|
| 446 | fmadd $h1lo,$s3lo,$x2,$h1lo
|
|---|
| 447 | fmadd $h1hi,$s3hi,$x2,$h1hi
|
|---|
| 448 | fmadd $h3lo,$r1lo,$x2,$h3lo
|
|---|
| 449 | fmadd $h3hi,$r1hi,$x2,$h3hi
|
|---|
| 450 |
|
|---|
| 451 | fmadd $h0lo,$r0lo,$x0,$h0lo
|
|---|
| 452 | lfd $y0,`$LOCALS+8*0`($sp) # load [biased] input
|
|---|
| 453 | fmadd $h0hi,$r0hi,$x0,$h0hi
|
|---|
| 454 | lfd $y1,`$LOCALS+8*1`($sp)
|
|---|
| 455 | fmadd $h2lo,$r2lo,$x0,$h2lo
|
|---|
| 456 | lfd $y2,`$LOCALS+8*2`($sp)
|
|---|
| 457 | fmadd $h2hi,$r2hi,$x0,$h2hi
|
|---|
| 458 | lfd $y3,`$LOCALS+8*3`($sp)
|
|---|
| 459 | fmadd $h1lo,$r1lo,$x0,$h1lo
|
|---|
| 460 | fmadd $h1hi,$r1hi,$x0,$h1hi
|
|---|
| 461 | fmadd $h3lo,$r3lo,$x0,$h3lo
|
|---|
| 462 | fmadd $h3hi,$r3hi,$x0,$h3hi
|
|---|
| 463 |
|
|---|
| 464 | bdnz Loop
|
|---|
| 465 |
|
|---|
| 466 | ######################################### base 2^48 -> base 2^32
|
|---|
| 467 | fadd $c0lo,$h0lo,$two32
|
|---|
| 468 | fadd $c0hi,$h0hi,$two32
|
|---|
| 469 | fadd $c2lo,$h2lo,$two96
|
|---|
| 470 | fadd $c2hi,$h2hi,$two96
|
|---|
| 471 | fadd $c1lo,$h1lo,$two64
|
|---|
| 472 | fadd $c1hi,$h1hi,$two64
|
|---|
| 473 | fadd $c3lo,$h3lo,$two130
|
|---|
| 474 | fadd $c3hi,$h3hi,$two130
|
|---|
| 475 |
|
|---|
| 476 | fsub $c0lo,$c0lo,$two32
|
|---|
| 477 | fsub $c0hi,$c0hi,$two32
|
|---|
| 478 | fsub $c2lo,$c2lo,$two96
|
|---|
| 479 | fsub $c2hi,$c2hi,$two96
|
|---|
| 480 | fsub $c1lo,$c1lo,$two64
|
|---|
| 481 | fsub $c1hi,$c1hi,$two64
|
|---|
| 482 | fsub $c3lo,$c3lo,$two130
|
|---|
| 483 | fsub $c3hi,$c3hi,$two130
|
|---|
| 484 |
|
|---|
| 485 | fsub $h1lo,$h1lo,$c1lo
|
|---|
| 486 | fsub $h1hi,$h1hi,$c1hi
|
|---|
| 487 | fsub $h3lo,$h3lo,$c3lo
|
|---|
| 488 | fsub $h3hi,$h3hi,$c3hi
|
|---|
| 489 | fsub $h2lo,$h2lo,$c2lo
|
|---|
| 490 | fsub $h2hi,$h2hi,$c2hi
|
|---|
| 491 | fsub $h0lo,$h0lo,$c0lo
|
|---|
| 492 | fsub $h0hi,$h0hi,$c0hi
|
|---|
| 493 |
|
|---|
| 494 | fadd $h1lo,$h1lo,$c0lo
|
|---|
| 495 | fadd $h1hi,$h1hi,$c0hi
|
|---|
| 496 | fadd $h3lo,$h3lo,$c2lo
|
|---|
| 497 | fadd $h3hi,$h3hi,$c2hi
|
|---|
| 498 | fadd $h2lo,$h2lo,$c1lo
|
|---|
| 499 | fadd $h2hi,$h2hi,$c1hi
|
|---|
| 500 | fmadd $h0lo,$c3lo,$five_two130,$h0lo
|
|---|
| 501 | fmadd $h0hi,$c3hi,$five_two130,$h0hi
|
|---|
| 502 |
|
|---|
| 503 | fadd $x1,$h1lo,$h1hi
|
|---|
| 504 | fadd $x3,$h3lo,$h3hi
|
|---|
| 505 | fadd $x2,$h2lo,$h2hi
|
|---|
| 506 | fadd $x0,$h0lo,$h0hi
|
|---|
| 507 |
|
|---|
| 508 | lfd $h0lo,`$LOCALS+8*4`($sp) # pull saved fpscr
|
|---|
| 509 | fadd $x1,$x1,$two32 # bias
|
|---|
| 510 | fadd $x3,$x3,$two96
|
|---|
| 511 | fadd $x2,$x2,$two64
|
|---|
| 512 | fadd $x0,$x0,$two0
|
|---|
| 513 |
|
|---|
| 514 | stfd $x1,8*1($ctx) # store [biased] hash value
|
|---|
| 515 | stfd $x3,8*3($ctx)
|
|---|
| 516 | stfd $x2,8*2($ctx)
|
|---|
| 517 | stfd $x0,8*0($ctx)
|
|---|
| 518 |
|
|---|
| 519 | mtfsf 255,$h0lo # restore original fpscr
|
|---|
| 520 | lfd f14,`$FRAME-8*18`($sp)
|
|---|
| 521 | lfd f15,`$FRAME-8*17`($sp)
|
|---|
| 522 | lfd f16,`$FRAME-8*16`($sp)
|
|---|
| 523 | lfd f17,`$FRAME-8*15`($sp)
|
|---|
| 524 | lfd f18,`$FRAME-8*14`($sp)
|
|---|
| 525 | lfd f19,`$FRAME-8*13`($sp)
|
|---|
| 526 | lfd f20,`$FRAME-8*12`($sp)
|
|---|
| 527 | lfd f21,`$FRAME-8*11`($sp)
|
|---|
| 528 | lfd f22,`$FRAME-8*10`($sp)
|
|---|
| 529 | lfd f23,`$FRAME-8*9`($sp)
|
|---|
| 530 | lfd f24,`$FRAME-8*8`($sp)
|
|---|
| 531 | lfd f25,`$FRAME-8*7`($sp)
|
|---|
| 532 | lfd f26,`$FRAME-8*6`($sp)
|
|---|
| 533 | lfd f27,`$FRAME-8*5`($sp)
|
|---|
| 534 | lfd f28,`$FRAME-8*4`($sp)
|
|---|
| 535 | lfd f29,`$FRAME-8*3`($sp)
|
|---|
| 536 | lfd f30,`$FRAME-8*2`($sp)
|
|---|
| 537 | lfd f31,`$FRAME-8*1`($sp)
|
|---|
| 538 | addi $sp,$sp,$FRAME
|
|---|
| 539 | Labort:
|
|---|
| 540 | blr
|
|---|
| 541 | .long 0
|
|---|
| 542 | .byte 0,12,4,1,0x80,0,4,0
|
|---|
| 543 | .size .poly1305_blocks_fpu,.-.poly1305_blocks_fpu
|
|---|
| 544 | ___
|
|---|
| 545 | {
|
|---|
| 546 | my ($mac,$nonce)=($inp,$len);
|
|---|
| 547 |
|
|---|
| 548 | my ($h0,$h1,$h2,$h3,$h4, $d0,$d1,$d2,$d3
|
|---|
| 549 | ) = map("r$_",(7..11,28..31));
|
|---|
| 550 | my $mask = "r0";
|
|---|
| 551 | my $FRAME = (6+4)*$SIZE_T;
|
|---|
| 552 |
|
|---|
| 553 | $code.=<<___;
|
|---|
| 554 | .globl .poly1305_emit_fpu
|
|---|
| 555 | .align 4
|
|---|
| 556 | .poly1305_emit_fpu:
|
|---|
| 557 | $STU $sp,-$FRAME($sp)
|
|---|
| 558 | mflr r0
|
|---|
| 559 | $PUSH r28,`$FRAME-$SIZE_T*4`($sp)
|
|---|
| 560 | $PUSH r29,`$FRAME-$SIZE_T*3`($sp)
|
|---|
| 561 | $PUSH r30,`$FRAME-$SIZE_T*2`($sp)
|
|---|
| 562 | $PUSH r31,`$FRAME-$SIZE_T*1`($sp)
|
|---|
| 563 | $PUSH r0,`$FRAME+$LRSAVE`($sp)
|
|---|
| 564 |
|
|---|
| 565 | lwz $d0,`8*0+(0^$LITTLE_ENDIAN)`($ctx) # load hash
|
|---|
| 566 | lwz $h0,`8*0+(4^$LITTLE_ENDIAN)`($ctx)
|
|---|
| 567 | lwz $d1,`8*1+(0^$LITTLE_ENDIAN)`($ctx)
|
|---|
| 568 | lwz $h1,`8*1+(4^$LITTLE_ENDIAN)`($ctx)
|
|---|
| 569 | lwz $d2,`8*2+(0^$LITTLE_ENDIAN)`($ctx)
|
|---|
| 570 | lwz $h2,`8*2+(4^$LITTLE_ENDIAN)`($ctx)
|
|---|
| 571 | lwz $d3,`8*3+(0^$LITTLE_ENDIAN)`($ctx)
|
|---|
| 572 | lwz $h3,`8*3+(4^$LITTLE_ENDIAN)`($ctx)
|
|---|
| 573 |
|
|---|
| 574 | lis $mask,0xfff0
|
|---|
| 575 | andc $d0,$d0,$mask # mask exponent
|
|---|
| 576 | andc $d1,$d1,$mask
|
|---|
| 577 | andc $d2,$d2,$mask
|
|---|
| 578 | andc $d3,$d3,$mask # can be partially reduced...
|
|---|
| 579 | li $mask,3
|
|---|
| 580 |
|
|---|
| 581 | srwi $padbit,$d3,2 # ... so reduce
|
|---|
| 582 | and $h4,$d3,$mask
|
|---|
| 583 | andc $d3,$d3,$mask
|
|---|
| 584 | add $d3,$d3,$padbit
|
|---|
| 585 | ___
|
|---|
| 586 | if ($SIZE_T==4) {
|
|---|
| 587 | $code.=<<___;
|
|---|
| 588 | addc $h0,$h0,$d3
|
|---|
| 589 | adde $h1,$h1,$d0
|
|---|
| 590 | adde $h2,$h2,$d1
|
|---|
| 591 | adde $h3,$h3,$d2
|
|---|
| 592 | addze $h4,$h4
|
|---|
| 593 |
|
|---|
| 594 | addic $d0,$h0,5 # compare to modulus
|
|---|
| 595 | addze $d1,$h1
|
|---|
| 596 | addze $d2,$h2
|
|---|
| 597 | addze $d3,$h3
|
|---|
| 598 | addze $mask,$h4
|
|---|
| 599 |
|
|---|
| 600 | srwi $mask,$mask,2 # did it carry/borrow?
|
|---|
| 601 | neg $mask,$mask
|
|---|
| 602 | srawi $mask,$mask,31 # mask
|
|---|
| 603 |
|
|---|
| 604 | andc $h0,$h0,$mask
|
|---|
| 605 | and $d0,$d0,$mask
|
|---|
| 606 | andc $h1,$h1,$mask
|
|---|
| 607 | and $d1,$d1,$mask
|
|---|
| 608 | or $h0,$h0,$d0
|
|---|
| 609 | lwz $d0,0($nonce) # load nonce
|
|---|
| 610 | andc $h2,$h2,$mask
|
|---|
| 611 | and $d2,$d2,$mask
|
|---|
| 612 | or $h1,$h1,$d1
|
|---|
| 613 | lwz $d1,4($nonce)
|
|---|
| 614 | andc $h3,$h3,$mask
|
|---|
| 615 | and $d3,$d3,$mask
|
|---|
| 616 | or $h2,$h2,$d2
|
|---|
| 617 | lwz $d2,8($nonce)
|
|---|
| 618 | or $h3,$h3,$d3
|
|---|
| 619 | lwz $d3,12($nonce)
|
|---|
| 620 |
|
|---|
| 621 | addc $h0,$h0,$d0 # accumulate nonce
|
|---|
| 622 | adde $h1,$h1,$d1
|
|---|
| 623 | adde $h2,$h2,$d2
|
|---|
| 624 | adde $h3,$h3,$d3
|
|---|
| 625 | ___
|
|---|
| 626 | } else {
|
|---|
| 627 | $code.=<<___;
|
|---|
| 628 | add $h0,$h0,$d3
|
|---|
| 629 | add $h1,$h1,$d0
|
|---|
| 630 | add $h2,$h2,$d1
|
|---|
| 631 | add $h3,$h3,$d2
|
|---|
| 632 |
|
|---|
| 633 | srdi $d0,$h0,32
|
|---|
| 634 | add $h1,$h1,$d0
|
|---|
| 635 | srdi $d1,$h1,32
|
|---|
| 636 | add $h2,$h2,$d1
|
|---|
| 637 | srdi $d2,$h2,32
|
|---|
| 638 | add $h3,$h3,$d2
|
|---|
| 639 | srdi $d3,$h3,32
|
|---|
| 640 | add $h4,$h4,$d3
|
|---|
| 641 |
|
|---|
| 642 | insrdi $h0,$h1,32,0
|
|---|
| 643 | insrdi $h2,$h3,32,0
|
|---|
| 644 |
|
|---|
| 645 | addic $d0,$h0,5 # compare to modulus
|
|---|
| 646 | addze $d1,$h2
|
|---|
| 647 | addze $d2,$h4
|
|---|
| 648 |
|
|---|
| 649 | srdi $mask,$d2,2 # did it carry/borrow?
|
|---|
| 650 | neg $mask,$mask
|
|---|
| 651 | sradi $mask,$mask,63 # mask
|
|---|
| 652 | ld $d2,0($nonce) # load nonce
|
|---|
| 653 | ld $d3,8($nonce)
|
|---|
| 654 |
|
|---|
| 655 | andc $h0,$h0,$mask
|
|---|
| 656 | and $d0,$d0,$mask
|
|---|
| 657 | andc $h2,$h2,$mask
|
|---|
| 658 | and $d1,$d1,$mask
|
|---|
| 659 | or $h0,$h0,$d0
|
|---|
| 660 | or $h2,$h2,$d1
|
|---|
| 661 | ___
|
|---|
| 662 | $code.=<<___ if (!$LITTLE_ENDIAN);
|
|---|
| 663 | rotldi $d2,$d2,32 # flip nonce words
|
|---|
| 664 | rotldi $d3,$d3,32
|
|---|
| 665 | ___
|
|---|
| 666 | $code.=<<___;
|
|---|
| 667 | addc $h0,$h0,$d2 # accumulate nonce
|
|---|
| 668 | adde $h2,$h2,$d3
|
|---|
| 669 |
|
|---|
| 670 | srdi $h1,$h0,32
|
|---|
| 671 | srdi $h3,$h2,32
|
|---|
| 672 | ___
|
|---|
| 673 | }
|
|---|
| 674 | $code.=<<___ if ($LITTLE_ENDIAN);
|
|---|
| 675 | stw $h0,0($mac) # write result
|
|---|
| 676 | stw $h1,4($mac)
|
|---|
| 677 | stw $h2,8($mac)
|
|---|
| 678 | stw $h3,12($mac)
|
|---|
| 679 | ___
|
|---|
| 680 | $code.=<<___ if (!$LITTLE_ENDIAN);
|
|---|
| 681 | li $d1,4
|
|---|
| 682 | stwbrx $h0,0,$mac # write result
|
|---|
| 683 | li $d2,8
|
|---|
| 684 | stwbrx $h1,$d1,$mac
|
|---|
| 685 | li $d3,12
|
|---|
| 686 | stwbrx $h2,$d2,$mac
|
|---|
| 687 | stwbrx $h3,$d3,$mac
|
|---|
| 688 | ___
|
|---|
| 689 | $code.=<<___;
|
|---|
| 690 | $POP r28,`$FRAME-$SIZE_T*4`($sp)
|
|---|
| 691 | $POP r29,`$FRAME-$SIZE_T*3`($sp)
|
|---|
| 692 | $POP r30,`$FRAME-$SIZE_T*2`($sp)
|
|---|
| 693 | $POP r31,`$FRAME-$SIZE_T*1`($sp)
|
|---|
| 694 | addi $sp,$sp,$FRAME
|
|---|
| 695 | blr
|
|---|
| 696 | .long 0
|
|---|
| 697 | .byte 0,12,4,1,0x80,4,3,0
|
|---|
| 698 | .size .poly1305_emit_fpu,.-.poly1305_emit_fpu
|
|---|
| 699 | ___
|
|---|
| 700 | }
|
|---|
| 701 | # Ugly hack here, because PPC assembler syntax seem to vary too
|
|---|
| 702 | # much from platforms to platform...
|
|---|
| 703 | $code.=<<___;
|
|---|
| 704 | .align 6
|
|---|
| 705 | LPICmeup:
|
|---|
| 706 | mflr r0
|
|---|
| 707 | bcl 20,31,\$+4
|
|---|
| 708 | mflr $len # vvvvvv "distance" between . and 1st data entry
|
|---|
| 709 | addi $len,$len,`64-8` # borrow $len
|
|---|
| 710 | mtlr r0
|
|---|
| 711 | blr
|
|---|
| 712 | .long 0
|
|---|
| 713 | .byte 0,12,0x14,0,0,0,0,0
|
|---|
| 714 | .space `64-9*4`
|
|---|
| 715 |
|
|---|
| 716 | .quad 0x4330000000000000 # 2^(52+0)
|
|---|
| 717 | .quad 0x4530000000000000 # 2^(52+32)
|
|---|
| 718 | .quad 0x4730000000000000 # 2^(52+64)
|
|---|
| 719 | .quad 0x4930000000000000 # 2^(52+96)
|
|---|
| 720 | .quad 0x4b50000000000000 # 2^(52+130)
|
|---|
| 721 |
|
|---|
| 722 | .quad 0x37f4000000000000 # 5/2^130
|
|---|
| 723 |
|
|---|
| 724 | .quad 0x4430000000000000 # 2^(52+16+0)
|
|---|
| 725 | .quad 0x4630000000000000 # 2^(52+16+32)
|
|---|
| 726 | .quad 0x4830000000000000 # 2^(52+16+64)
|
|---|
| 727 | .quad 0x4a30000000000000 # 2^(52+16+96)
|
|---|
| 728 | .quad 0x3e30000000000000 # 2^(52+16+0-96)
|
|---|
| 729 | .quad 0x4030000000000000 # 2^(52+16+32-96)
|
|---|
| 730 | .quad 0x4230000000000000 # 2^(52+16+64-96)
|
|---|
| 731 |
|
|---|
| 732 | .quad 0x0000000000000001 # fpscr: truncate, no exceptions
|
|---|
| 733 | .asciz "Poly1305 for PPC FPU, CRYPTOGAMS by <appro\@openssl.org>"
|
|---|
| 734 | .align 4
|
|---|
| 735 | ___
|
|---|
| 736 |
|
|---|
| 737 | $code =~ s/\`([^\`]*)\`/eval $1/gem;
|
|---|
| 738 | print $code;
|
|---|
| 739 | close STDOUT or die "error closing STDOUT: $!";
|
|---|
