373 lines
8.8 KiB
Raku
373 lines
8.8 KiB
Raku
#!/usr/bin/env perl
|
||
|
||
# ====================================================================
|
||
# Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
|
||
# project. The module is, however, dual licensed under OpenSSL and
|
||
# CRYPTOGAMS licenses depending on where you obtain it. For further
|
||
# details see http://www.openssl.org/~appro/cryptogams/.
|
||
# ====================================================================
|
||
|
||
# October 2012.
|
||
#
|
||
# SPARCv9 VIS3 Montgomery multiplicaion procedure suitable for T3 and
|
||
# onward. There are three new instructions used here: umulxhi,
|
||
# addxc[cc] and initializing store. On T3 RSA private key operations
|
||
# are 1.54/1.87/2.11/2.26 times faster for 512/1024/2048/4096-bit key
|
||
# lengths. This is without dedicated squaring procedure. On T4
|
||
# corresponding coefficients are 1.47/2.10/2.80/2.90x, which is mostly
|
||
# for reference purposes, because T4 has dedicated Montgomery
|
||
# multiplication and squaring *instructions* that deliver even more.
|
||
|
||
$bits=32;
|
||
for (@ARGV) { $bits=64 if (/\-m64/ || /\-xarch\=v9/); }
|
||
if ($bits==64) { $bias=2047; $frame=192; }
|
||
else { $bias=0; $frame=112; }
|
||
|
||
$code.=<<___ if ($bits==64);
|
||
.register %g2,#scratch
|
||
.register %g3,#scratch
|
||
___
|
||
$code.=<<___;
|
||
.section ".text",#alloc,#execinstr
|
||
___
|
||
|
||
($n0,$m0,$m1,$lo0,$hi0, $lo1,$hi1,$aj,$alo,$nj,$nlo,$tj)=
|
||
(map("%g$_",(1..5)),map("%o$_",(0..5,7)));
|
||
|
||
# int bn_mul_mont(
|
||
$rp="%o0"; # BN_ULONG *rp,
|
||
$ap="%o1"; # const BN_ULONG *ap,
|
||
$bp="%o2"; # const BN_ULONG *bp,
|
||
$np="%o3"; # const BN_ULONG *np,
|
||
$n0p="%o4"; # const BN_ULONG *n0,
|
||
$num="%o5"; # int num); # caller ensures that num is even
|
||
# and >=6
|
||
$code.=<<___;
|
||
.globl bn_mul_mont_vis3
|
||
.align 32
|
||
bn_mul_mont_vis3:
|
||
add %sp, $bias, %g4 ! real top of stack
|
||
sll $num, 2, $num ! size in bytes
|
||
add $num, 63, %g5
|
||
andn %g5, 63, %g5 ! buffer size rounded up to 64 bytes
|
||
add %g5, %g5, %g1
|
||
add %g5, %g1, %g1 ! 3*buffer size
|
||
sub %g4, %g1, %g1
|
||
andn %g1, 63, %g1 ! align at 64 byte
|
||
sub %g1, $frame, %g1 ! new top of stack
|
||
sub %g1, %g4, %g1
|
||
|
||
save %sp, %g1, %sp
|
||
___
|
||
|
||
# +-------------------------------+<----- %sp
|
||
# . .
|
||
# +-------------------------------+<----- aligned at 64 bytes
|
||
# | __int64 tmp[0] |
|
||
# +-------------------------------+
|
||
# . .
|
||
# . .
|
||
# +-------------------------------+<----- aligned at 64 bytes
|
||
# | __int64 ap[1..0] | converted ap[]
|
||
# +-------------------------------+
|
||
# | __int64 np[1..0] | converted np[]
|
||
# +-------------------------------+
|
||
# | __int64 ap[3..2] |
|
||
# . .
|
||
# . .
|
||
# +-------------------------------+
|
||
($rp,$ap,$bp,$np,$n0p,$num)=map("%i$_",(0..5));
|
||
($t0,$t1,$t2,$t3,$cnt,$tp,$bufsz,$anp)=map("%l$_",(0..7));
|
||
($ovf,$i)=($t0,$t1);
|
||
$code.=<<___;
|
||
ld [$n0p+0], $t0 ! pull n0[0..1] value
|
||
add %sp, $bias+$frame, $tp
|
||
ld [$n0p+4], $t1
|
||
add $tp, %g5, $anp
|
||
ld [$bp+0], $t2 ! m0=bp[0]
|
||
sllx $t1, 32, $n0
|
||
ld [$bp+4], $t3
|
||
or $t0, $n0, $n0
|
||
add $bp, 8, $bp
|
||
|
||
ld [$ap+0], $t0 ! ap[0]
|
||
sllx $t3, 32, $m0
|
||
ld [$ap+4], $t1
|
||
or $t2, $m0, $m0
|
||
|
||
ld [$ap+8], $t2 ! ap[1]
|
||
sllx $t1, 32, $aj
|
||
ld [$ap+12], $t3
|
||
or $t0, $aj, $aj
|
||
add $ap, 16, $ap
|
||
stxa $aj, [$anp]0xe2 ! converted ap[0]
|
||
|
||
mulx $aj, $m0, $lo0 ! ap[0]*bp[0]
|
||
umulxhi $aj, $m0, $hi0
|
||
|
||
ld [$np+0], $t0 ! np[0]
|
||
sllx $t3, 32, $aj
|
||
ld [$np+4], $t1
|
||
or $t2, $aj, $aj
|
||
|
||
ld [$np+8], $t2 ! np[1]
|
||
sllx $t1, 32, $nj
|
||
ld [$np+12], $t3
|
||
or $t0, $nj, $nj
|
||
add $np, 16, $np
|
||
stx $nj, [$anp+8] ! converted np[0]
|
||
|
||
mulx $lo0, $n0, $m1 ! "tp[0]"*n0
|
||
stx $aj, [$anp+16] ! converted ap[1]
|
||
|
||
mulx $aj, $m0, $alo ! ap[1]*bp[0]
|
||
umulxhi $aj, $m0, $aj ! ahi=aj
|
||
|
||
mulx $nj, $m1, $lo1 ! np[0]*m1
|
||
umulxhi $nj, $m1, $hi1
|
||
|
||
sllx $t3, 32, $nj
|
||
or $t2, $nj, $nj
|
||
stx $nj, [$anp+24] ! converted np[1]
|
||
add $anp, 32, $anp
|
||
|
||
addcc $lo0, $lo1, $lo1
|
||
addxc %g0, $hi1, $hi1
|
||
|
||
mulx $nj, $m1, $nlo ! np[1]*m1
|
||
umulxhi $nj, $m1, $nj ! nhi=nj
|
||
|
||
ba .L1st
|
||
sub $num, 24, $cnt ! cnt=num-3
|
||
|
||
.align 16
|
||
.L1st:
|
||
ld [$ap+0], $t0 ! ap[j]
|
||
addcc $alo, $hi0, $lo0
|
||
ld [$ap+4], $t1
|
||
addxc $aj, %g0, $hi0
|
||
|
||
sllx $t1, 32, $aj
|
||
add $ap, 8, $ap
|
||
or $t0, $aj, $aj
|
||
stxa $aj, [$anp]0xe2 ! converted ap[j]
|
||
|
||
ld [$np+0], $t2 ! np[j]
|
||
addcc $nlo, $hi1, $lo1
|
||
ld [$np+4], $t3
|
||
addxc $nj, %g0, $hi1 ! nhi=nj
|
||
|
||
sllx $t3, 32, $nj
|
||
add $np, 8, $np
|
||
mulx $aj, $m0, $alo ! ap[j]*bp[0]
|
||
or $t2, $nj, $nj
|
||
umulxhi $aj, $m0, $aj ! ahi=aj
|
||
stx $nj, [$anp+8] ! converted np[j]
|
||
add $anp, 16, $anp ! anp++
|
||
|
||
mulx $nj, $m1, $nlo ! np[j]*m1
|
||
addcc $lo0, $lo1, $lo1 ! np[j]*m1+ap[j]*bp[0]
|
||
umulxhi $nj, $m1, $nj ! nhi=nj
|
||
addxc %g0, $hi1, $hi1
|
||
stxa $lo1, [$tp]0xe2 ! tp[j-1]
|
||
add $tp, 8, $tp ! tp++
|
||
|
||
brnz,pt $cnt, .L1st
|
||
sub $cnt, 8, $cnt ! j--
|
||
!.L1st
|
||
addcc $alo, $hi0, $lo0
|
||
addxc $aj, %g0, $hi0 ! ahi=aj
|
||
|
||
addcc $nlo, $hi1, $lo1
|
||
addxc $nj, %g0, $hi1
|
||
addcc $lo0, $lo1, $lo1 ! np[j]*m1+ap[j]*bp[0]
|
||
addxc %g0, $hi1, $hi1
|
||
stxa $lo1, [$tp]0xe2 ! tp[j-1]
|
||
add $tp, 8, $tp
|
||
|
||
addcc $hi0, $hi1, $hi1
|
||
addxc %g0, %g0, $ovf ! upmost overflow bit
|
||
stxa $hi1, [$tp]0xe2
|
||
add $tp, 8, $tp
|
||
|
||
ba .Louter
|
||
sub $num, 16, $i ! i=num-2
|
||
|
||
.align 16
|
||
.Louter:
|
||
ld [$bp+0], $t2 ! m0=bp[i]
|
||
ld [$bp+4], $t3
|
||
|
||
sub $anp, $num, $anp ! rewind
|
||
sub $tp, $num, $tp
|
||
sub $anp, $num, $anp
|
||
|
||
add $bp, 8, $bp
|
||
sllx $t3, 32, $m0
|
||
ldx [$anp+0], $aj ! ap[0]
|
||
or $t2, $m0, $m0
|
||
ldx [$anp+8], $nj ! np[0]
|
||
|
||
mulx $aj, $m0, $lo0 ! ap[0]*bp[i]
|
||
ldx [$tp], $tj ! tp[0]
|
||
umulxhi $aj, $m0, $hi0
|
||
ldx [$anp+16], $aj ! ap[1]
|
||
addcc $lo0, $tj, $lo0 ! ap[0]*bp[i]+tp[0]
|
||
mulx $aj, $m0, $alo ! ap[1]*bp[i]
|
||
addxc %g0, $hi0, $hi0
|
||
mulx $lo0, $n0, $m1 ! tp[0]*n0
|
||
umulxhi $aj, $m0, $aj ! ahi=aj
|
||
mulx $nj, $m1, $lo1 ! np[0]*m1
|
||
umulxhi $nj, $m1, $hi1
|
||
ldx [$anp+24], $nj ! np[1]
|
||
add $anp, 32, $anp
|
||
addcc $lo1, $lo0, $lo1
|
||
mulx $nj, $m1, $nlo ! np[1]*m1
|
||
addxc %g0, $hi1, $hi1
|
||
umulxhi $nj, $m1, $nj ! nhi=nj
|
||
|
||
ba .Linner
|
||
sub $num, 24, $cnt ! cnt=num-3
|
||
.align 16
|
||
.Linner:
|
||
addcc $alo, $hi0, $lo0
|
||
ldx [$tp+8], $tj ! tp[j]
|
||
addxc $aj, %g0, $hi0 ! ahi=aj
|
||
ldx [$anp+0], $aj ! ap[j]
|
||
addcc $nlo, $hi1, $lo1
|
||
mulx $aj, $m0, $alo ! ap[j]*bp[i]
|
||
addxc $nj, %g0, $hi1 ! nhi=nj
|
||
ldx [$anp+8], $nj ! np[j]
|
||
add $anp, 16, $anp
|
||
umulxhi $aj, $m0, $aj ! ahi=aj
|
||
addcc $lo0, $tj, $lo0 ! ap[j]*bp[i]+tp[j]
|
||
mulx $nj, $m1, $nlo ! np[j]*m1
|
||
addxc %g0, $hi0, $hi0
|
||
umulxhi $nj, $m1, $nj ! nhi=nj
|
||
addcc $lo1, $lo0, $lo1 ! np[j]*m1+ap[j]*bp[i]+tp[j]
|
||
addxc %g0, $hi1, $hi1
|
||
stx $lo1, [$tp] ! tp[j-1]
|
||
add $tp, 8, $tp
|
||
brnz,pt $cnt, .Linner
|
||
sub $cnt, 8, $cnt
|
||
!.Linner
|
||
ldx [$tp+8], $tj ! tp[j]
|
||
addcc $alo, $hi0, $lo0
|
||
addxc $aj, %g0, $hi0 ! ahi=aj
|
||
addcc $lo0, $tj, $lo0 ! ap[j]*bp[i]+tp[j]
|
||
addxc %g0, $hi0, $hi0
|
||
|
||
addcc $nlo, $hi1, $lo1
|
||
addxc $nj, %g0, $hi1 ! nhi=nj
|
||
addcc $lo1, $lo0, $lo1 ! np[j]*m1+ap[j]*bp[i]+tp[j]
|
||
addxc %g0, $hi1, $hi1
|
||
stx $lo1, [$tp] ! tp[j-1]
|
||
|
||
subcc %g0, $ovf, %g0 ! move upmost overflow to CCR.xcc
|
||
addxccc $hi1, $hi0, $hi1
|
||
addxc %g0, %g0, $ovf
|
||
stx $hi1, [$tp+8]
|
||
add $tp, 16, $tp
|
||
|
||
brnz,pt $i, .Louter
|
||
sub $i, 8, $i
|
||
|
||
sub $anp, $num, $anp ! rewind
|
||
sub $tp, $num, $tp
|
||
sub $anp, $num, $anp
|
||
ba .Lsub
|
||
subcc $num, 8, $cnt ! cnt=num-1 and clear CCR.xcc
|
||
|
||
.align 16
|
||
.Lsub:
|
||
ldx [$tp], $tj
|
||
add $tp, 8, $tp
|
||
ldx [$anp+8], $nj
|
||
add $anp, 16, $anp
|
||
subccc $tj, $nj, $t2 ! tp[j]-np[j]
|
||
srlx $tj, 32, $tj
|
||
srlx $nj, 32, $nj
|
||
subccc $tj, $nj, $t3
|
||
add $rp, 8, $rp
|
||
st $t2, [$rp-4] ! reverse order
|
||
st $t3, [$rp-8]
|
||
brnz,pt $cnt, .Lsub
|
||
sub $cnt, 8, $cnt
|
||
|
||
sub $anp, $num, $anp ! rewind
|
||
sub $tp, $num, $tp
|
||
sub $anp, $num, $anp
|
||
sub $rp, $num, $rp
|
||
|
||
subc $ovf, %g0, $ovf ! handle upmost overflow bit
|
||
and $tp, $ovf, $ap
|
||
andn $rp, $ovf, $np
|
||
or $np, $ap, $ap ! ap=borrow?tp:rp
|
||
ba .Lcopy
|
||
sub $num, 8, $cnt
|
||
|
||
.align 16
|
||
.Lcopy: ! copy or in-place refresh
|
||
ld [$ap+0], $t2
|
||
ld [$ap+4], $t3
|
||
add $ap, 8, $ap
|
||
stx %g0, [$tp] ! zap
|
||
add $tp, 8, $tp
|
||
stx %g0, [$anp] ! zap
|
||
stx %g0, [$anp+8]
|
||
add $anp, 16, $anp
|
||
st $t3, [$rp+0] ! flip order
|
||
st $t2, [$rp+4]
|
||
add $rp, 8, $rp
|
||
brnz $cnt, .Lcopy
|
||
sub $cnt, 8, $cnt
|
||
|
||
mov 1, %o0
|
||
ret
|
||
restore
|
||
.type bn_mul_mont_vis3, #function
|
||
.size bn_mul_mont_vis3, .-bn_mul_mont_vis3
|
||
.asciz "Montgomery Multiplication for SPARCv9 VIS3, CRYPTOGAMS by <appro\@openssl.org>"
|
||
.align 4
|
||
___
|
||
|
||
# Purpose of these subroutines is to explicitly encode VIS instructions,
|
||
# so that one can compile the module without having to specify VIS
|
||
# extensions on compiler command line, e.g. -xarch=v9 vs. -xarch=v9a.
|
||
# Idea is to reserve for option to produce "universal" binary and let
|
||
# programmer detect if current CPU is VIS capable at run-time.
|
||
sub unvis3 {
|
||
my ($mnemonic,$rs1,$rs2,$rd)=@_;
|
||
my %bias = ( "g" => 0, "o" => 8, "l" => 16, "i" => 24 );
|
||
my ($ref,$opf);
|
||
my %visopf = ( "addxc" => 0x011,
|
||
"addxccc" => 0x013,
|
||
"umulxhi" => 0x016 );
|
||
|
||
$ref = "$mnemonic\t$rs1,$rs2,$rd";
|
||
|
||
if ($opf=$visopf{$mnemonic}) {
|
||
foreach ($rs1,$rs2,$rd) {
|
||
return $ref if (!/%([goli])([0-9])/);
|
||
$_=$bias{$1}+$2;
|
||
}
|
||
|
||
return sprintf ".word\t0x%08x !%s",
|
||
0x81b00000|$rd<<25|$rs1<<14|$opf<<5|$rs2,
|
||
$ref;
|
||
} else {
|
||
return $ref;
|
||
}
|
||
}
|
||
|
||
foreach (split("\n",$code)) {
|
||
s/\`([^\`]*)\`/eval $1/ge;
|
||
|
||
s/\b(umulxhi|addxc[c]{0,2})\s+(%[goli][0-7]),\s*(%[goli][0-7]),\s*(%[goli][0-7])/
|
||
&unvis3($1,$2,$3,$4)
|
||
/ge;
|
||
|
||
print $_,"\n";
|
||
}
|
||
|
||
close STDOUT;
|