You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
221 lines
5.0 KiB
221 lines
5.0 KiB
#!/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/. |
|
# ==================================================================== |
|
# |
|
# May 2011 |
|
# |
|
# The module implements bn_GF2m_mul_2x2 polynomial multiplication used |
|
# in bn_gf2m.c. It's kind of low-hanging mechanical port from C for |
|
# the time being... gcc 4.3 appeared to generate poor code, therefore |
|
# the effort. And indeed, the module delivers 55%-90%(*) improvement |
|
# on haviest ECDSA verify and ECDH benchmarks for 163- and 571-bit |
|
# key lengths on z990, 30%-55%(*) - on z10, and 70%-110%(*) - on z196. |
|
# This is for 64-bit build. In 32-bit "highgprs" case improvement is |
|
# even higher, for example on z990 it was measured 80%-150%. ECDSA |
|
# sign is modest 9%-12% faster. Keep in mind that these coefficients |
|
# are not ones for bn_GF2m_mul_2x2 itself, as not all CPU time is |
|
# burnt in it... |
|
# |
|
# (*) gcc 4.1 was observed to deliver better results than gcc 4.3, |
|
# so that improvement coefficients can vary from one specific |
|
# setup to another. |
|
|
|
$flavour = shift; |
|
|
|
if ($flavour =~ /3[12]/) { |
|
$SIZE_T=4; |
|
$g=""; |
|
} else { |
|
$SIZE_T=8; |
|
$g="g"; |
|
} |
|
|
|
while (($output=shift) && ($output!~/^\w[\w\-]*\.\w+$/)) {} |
|
open STDOUT,">$output"; |
|
|
|
$stdframe=16*$SIZE_T+4*8; |
|
|
|
$rp="%r2"; |
|
$a1="%r3"; |
|
$a0="%r4"; |
|
$b1="%r5"; |
|
$b0="%r6"; |
|
|
|
$ra="%r14"; |
|
$sp="%r15"; |
|
|
|
@T=("%r0","%r1"); |
|
@i=("%r12","%r13"); |
|
|
|
($a1,$a2,$a4,$a8,$a12,$a48)=map("%r$_",(6..11)); |
|
($lo,$hi,$b)=map("%r$_",(3..5)); $a=$lo; $mask=$a8; |
|
|
|
$code.=<<___; |
|
.text |
|
|
|
.type _mul_1x1,\@function |
|
.align 16 |
|
_mul_1x1: |
|
lgr $a1,$a |
|
sllg $a2,$a,1 |
|
sllg $a4,$a,2 |
|
sllg $a8,$a,3 |
|
|
|
srag $lo,$a1,63 # broadcast 63rd bit |
|
nihh $a1,0x1fff |
|
srag @i[0],$a2,63 # broadcast 62nd bit |
|
nihh $a2,0x3fff |
|
srag @i[1],$a4,63 # broadcast 61st bit |
|
nihh $a4,0x7fff |
|
ngr $lo,$b |
|
ngr @i[0],$b |
|
ngr @i[1],$b |
|
|
|
lghi @T[0],0 |
|
lgr $a12,$a1 |
|
stg @T[0],`$stdframe+0*8`($sp) # tab[0]=0 |
|
xgr $a12,$a2 |
|
stg $a1,`$stdframe+1*8`($sp) # tab[1]=a1 |
|
lgr $a48,$a4 |
|
stg $a2,`$stdframe+2*8`($sp) # tab[2]=a2 |
|
xgr $a48,$a8 |
|
stg $a12,`$stdframe+3*8`($sp) # tab[3]=a1^a2 |
|
xgr $a1,$a4 |
|
|
|
stg $a4,`$stdframe+4*8`($sp) # tab[4]=a4 |
|
xgr $a2,$a4 |
|
stg $a1,`$stdframe+5*8`($sp) # tab[5]=a1^a4 |
|
xgr $a12,$a4 |
|
stg $a2,`$stdframe+6*8`($sp) # tab[6]=a2^a4 |
|
xgr $a1,$a48 |
|
stg $a12,`$stdframe+7*8`($sp) # tab[7]=a1^a2^a4 |
|
xgr $a2,$a48 |
|
|
|
stg $a8,`$stdframe+8*8`($sp) # tab[8]=a8 |
|
xgr $a12,$a48 |
|
stg $a1,`$stdframe+9*8`($sp) # tab[9]=a1^a8 |
|
xgr $a1,$a4 |
|
stg $a2,`$stdframe+10*8`($sp) # tab[10]=a2^a8 |
|
xgr $a2,$a4 |
|
stg $a12,`$stdframe+11*8`($sp) # tab[11]=a1^a2^a8 |
|
|
|
xgr $a12,$a4 |
|
stg $a48,`$stdframe+12*8`($sp) # tab[12]=a4^a8 |
|
srlg $hi,$lo,1 |
|
stg $a1,`$stdframe+13*8`($sp) # tab[13]=a1^a4^a8 |
|
sllg $lo,$lo,63 |
|
stg $a2,`$stdframe+14*8`($sp) # tab[14]=a2^a4^a8 |
|
srlg @T[0],@i[0],2 |
|
stg $a12,`$stdframe+15*8`($sp) # tab[15]=a1^a2^a4^a8 |
|
|
|
lghi $mask,`0xf<<3` |
|
sllg $a1,@i[0],62 |
|
sllg @i[0],$b,3 |
|
srlg @T[1],@i[1],3 |
|
ngr @i[0],$mask |
|
sllg $a2,@i[1],61 |
|
srlg @i[1],$b,4-3 |
|
xgr $hi,@T[0] |
|
ngr @i[1],$mask |
|
xgr $lo,$a1 |
|
xgr $hi,@T[1] |
|
xgr $lo,$a2 |
|
|
|
xg $lo,$stdframe(@i[0],$sp) |
|
srlg @i[0],$b,8-3 |
|
ngr @i[0],$mask |
|
___ |
|
for($n=1;$n<14;$n++) { |
|
$code.=<<___; |
|
lg @T[1],$stdframe(@i[1],$sp) |
|
srlg @i[1],$b,`($n+2)*4`-3 |
|
sllg @T[0],@T[1],`$n*4` |
|
ngr @i[1],$mask |
|
srlg @T[1],@T[1],`64-$n*4` |
|
xgr $lo,@T[0] |
|
xgr $hi,@T[1] |
|
___ |
|
push(@i,shift(@i)); push(@T,shift(@T)); |
|
} |
|
$code.=<<___; |
|
lg @T[1],$stdframe(@i[1],$sp) |
|
sllg @T[0],@T[1],`$n*4` |
|
srlg @T[1],@T[1],`64-$n*4` |
|
xgr $lo,@T[0] |
|
xgr $hi,@T[1] |
|
|
|
lg @T[0],$stdframe(@i[0],$sp) |
|
sllg @T[1],@T[0],`($n+1)*4` |
|
srlg @T[0],@T[0],`64-($n+1)*4` |
|
xgr $lo,@T[1] |
|
xgr $hi,@T[0] |
|
|
|
br $ra |
|
.size _mul_1x1,.-_mul_1x1 |
|
|
|
.globl bn_GF2m_mul_2x2 |
|
.type bn_GF2m_mul_2x2,\@function |
|
.align 16 |
|
bn_GF2m_mul_2x2: |
|
stm${g} %r3,%r15,3*$SIZE_T($sp) |
|
|
|
lghi %r1,-$stdframe-128 |
|
la %r0,0($sp) |
|
la $sp,0(%r1,$sp) # alloca |
|
st${g} %r0,0($sp) # back chain |
|
___ |
|
if ($SIZE_T==8) { |
|
my @r=map("%r$_",(6..9)); |
|
$code.=<<___; |
|
bras $ra,_mul_1x1 # a1·b1 |
|
stmg $lo,$hi,16($rp) |
|
|
|
lg $a,`$stdframe+128+4*$SIZE_T`($sp) |
|
lg $b,`$stdframe+128+6*$SIZE_T`($sp) |
|
bras $ra,_mul_1x1 # a0·b0 |
|
stmg $lo,$hi,0($rp) |
|
|
|
lg $a,`$stdframe+128+3*$SIZE_T`($sp) |
|
lg $b,`$stdframe+128+5*$SIZE_T`($sp) |
|
xg $a,`$stdframe+128+4*$SIZE_T`($sp) |
|
xg $b,`$stdframe+128+6*$SIZE_T`($sp) |
|
bras $ra,_mul_1x1 # (a0+a1)·(b0+b1) |
|
lmg @r[0],@r[3],0($rp) |
|
|
|
xgr $lo,$hi |
|
xgr $hi,@r[1] |
|
xgr $lo,@r[0] |
|
xgr $hi,@r[2] |
|
xgr $lo,@r[3] |
|
xgr $hi,@r[3] |
|
xgr $lo,$hi |
|
stg $hi,16($rp) |
|
stg $lo,8($rp) |
|
___ |
|
} else { |
|
$code.=<<___; |
|
sllg %r3,%r3,32 |
|
sllg %r5,%r5,32 |
|
or %r3,%r4 |
|
or %r5,%r6 |
|
bras $ra,_mul_1x1 |
|
rllg $lo,$lo,32 |
|
rllg $hi,$hi,32 |
|
stmg $lo,$hi,0($rp) |
|
___ |
|
} |
|
$code.=<<___; |
|
lm${g} %r6,%r15,`$stdframe+128+6*$SIZE_T`($sp) |
|
br $ra |
|
.size bn_GF2m_mul_2x2,.-bn_GF2m_mul_2x2 |
|
.string "GF(2^m) Multiplication for s390x, CRYPTOGAMS by <appro\@openssl.org>" |
|
___ |
|
|
|
$code =~ s/\`([^\`]*)\`/eval($1)/gem; |
|
print $code; |
|
close STDOUT;
|
|
|