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|
#!/usr/local/bin/perl
$num=8;
$num2=8/2;
print <<"EOF";
/* crypto/bn/bn_comba.c */
#include <stdio.h>
#include "bn_lcl.h"
/* Auto generated from crypto/bn/comba.pl
*/
#undef bn_mul_comba8
#undef bn_mul_comba4
#undef bn_sqr_comba8
#undef bn_sqr_comba4
#ifdef BN_LLONG
#define mul_add_c(a,b,c0,c1,c2) \\
t=(BN_ULLONG)a*b; \\
t1=(BN_ULONG)Lw(t); \\
t2=(BN_ULONG)Hw(t); \\
c0=(c0+t1)&BN_MASK2; if ((c0) < t1) t2++; \\
c1=(c1+t2)&BN_MASK2; if ((c1) < t2) c2++;
#define mul_add_c2(a,b,c0,c1,c2) \\
t=(BN_ULLONG)a*b; \\
tt=(t+t)&BN_MASK; \\
if (tt < t) c2++; \\
t1=(BN_ULONG)Lw(tt); \\
t2=(BN_ULONG)Hw(tt); \\
c0=(c0+t1)&BN_MASK2; \\
if ((c0 < t1) && (((++t2)&BN_MASK2) == 0)) c2++; \\
c1=(c1+t2)&BN_MASK2; if ((c1) < t2) c2++;
#define sqr_add_c(a,i,c0,c1,c2) \\
t=(BN_ULLONG)a[i]*a[i]; \\
t1=(BN_ULONG)Lw(t); \\
t2=(BN_ULONG)Hw(t); \\
c0=(c0+t1)&BN_MASK2; if ((c0) < t1) t2++; \\
c1=(c1+t2)&BN_MASK2; if ((c1) < t2) c2++;
#define sqr_add_c2(a,i,j,c0,c1,c2) \\
mul_add_c2((a)[i],(a)[j],c0,c1,c2)
#else
#define mul_add_c(a,b,c0,c1,c2) \\
t1=LBITS(a); t2=HBITS(a); \\
bl=LBITS(b); bh=HBITS(b); \\
mul64(t1,t2,bl,bh); \\
c0=(c0+t1)&BN_MASK2; if ((c0) < t1) t2++; \\
c1=(c1+t2)&BN_MASK2; if ((c1) < t2) c2++;
#define mul_add_c2(a,b,c0,c1,c2) \\
t1=LBITS(a); t2=HBITS(a); \\
bl=LBITS(b); bh=HBITS(b); \\
mul64(t1,t2,bl,bh); \\
if (t2 & BN_TBIT) c2++; \\
t2=(t2+t2)&BN_MASK2; \\
if (t1 & BN_TBIT) t2++; \\
t1=(t1+t1)&BN_MASK2; \\
c0=(c0+t1)&BN_MASK2; \\
if ((c0 < t1) && (((++t2)&BN_MASK2) == 0)) c2++; \\
c1=(c1+t2)&BN_MASK2; if ((c1) < t2) c2++;
#define sqr_add_c(a,i,c0,c1,c2) \\
sqr64(t1,t2,(a)[i]); \\
c0=(c0+t1)&BN_MASK2; if ((c0) < t1) t2++; \\
c1=(c1+t2)&BN_MASK2; if ((c1) < t2) c2++;
#define sqr_add_c2(a,i,j,c0,c1,c2) \\
mul_add_c2((a)[i],(a)[j],c0,c1,c2)
#endif
void bn_mul_comba${num}(r,a,b)
BN_ULONG *r,*a,*b;
{
#ifdef BN_LLONG
BN_ULLONG t;
#else
BN_ULONG bl,bh;
#endif
BN_ULONG t1,t2;
BN_ULONG c1,c2,c3;
EOF
$ret=&combas_mul("r","a","b",$num,"c1","c2","c3");
printf <<"EOF";
}
void bn_mul_comba${num2}(r,a,b)
BN_ULONG *r,*a,*b;
{
#ifdef BN_LLONG
BN_ULLONG t;
#else
BN_ULONG bl,bh;
#endif
BN_ULONG t1,t2;
BN_ULONG c1,c2,c3;
EOF
$ret=&combas_mul("r","a","b",$num2,"c1","c2","c3");
printf <<"EOF";
}
void bn_sqr_comba${num}(r,a)
BN_ULONG *r,*a;
{
#ifdef BN_LLONG
BN_ULLONG t,tt;
#else
BN_ULONG bl,bh;
#endif
BN_ULONG t1,t2;
BN_ULONG c1,c2,c3;
EOF
$ret=&combas_sqr("r","a",$num,"c1","c2","c3");
printf <<"EOF";
}
void bn_sqr_comba${num2}(r,a)
BN_ULONG *r,*a;
{
#ifdef BN_LLONG
BN_ULLONG t,tt;
#else
BN_ULONG bl,bh;
#endif
BN_ULONG t1,t2;
BN_ULONG c1,c2,c3;
EOF
$ret=&combas_sqr("r","a",$num2,"c1","c2","c3");
printf <<"EOF";
}
EOF
sub bn_str
{
local($var,$val)=@_;
print "\t$var=$val;\n";
}
sub bn_ary
{
local($var,$idx)=@_;
return("${var}[$idx]");
}
sub bn_clr
{
local($var)=@_;
print "\t$var=0;\n";
}
sub bn_mad
{
local($a,$b,$c0,$c1,$c2,$num)=@_;
if ($num == 2)
{ printf("\tmul_add_c2($a,$b,$c0,$c1,$c2);\n"); }
else
{ printf("\tmul_add_c($a,$b,$c0,$c1,$c2);\n"); }
}
sub bn_sad
{
local($a,$i,$j,$c0,$c1,$c2,$num)=@_;
if ($num == 2)
{ printf("\tsqr_add_c2($a,$i,$j,$c0,$c1,$c2);\n"); }
else
{ printf("\tsqr_add_c($a,$i,$c0,$c1,$c2);\n"); }
}
sub combas_mul
{
local($r,$a,$b,$num,$c0,$c1,$c2)=@_;
local($i,$as,$ae,$bs,$be,$ai,$bi);
local($tot,$end);
$as=0;
$ae=0;
$bs=0;
$be=0;
$tot=$num+$num-1;
&bn_clr($c0);
&bn_clr($c1);
for ($i=0; $i<$tot; $i++)
{
$ai=$as;
$bi=$bs;
$end=$be+1;
@numa=@numb=();
#print "($as $ae) ($bs $be) $bs -> $end [$i $num]\n";
for ($j=$bs; $j<$end; $j++)
{
push(@numa,$ai);
push(@numb,$bi);
$ai--;
$bi++;
}
if ($i & 1)
{
@numa=reverse(@numa);
@numb=reverse(@numb);
}
&bn_clr($c2);
for ($j=0; $j<=$#numa; $j++)
{
&bn_mad(&bn_ary($a,$numa[$j]),
&bn_ary($b,$numb[$j]),$c0,$c1,$c2,1);
}
&bn_str(&bn_ary($r,$i),$c0);
($c0,$c1,$c2)=($c1,$c2,$c0);
$as++ if ($i < ($num-1));
$ae++ if ($i >= ($num-1));
$bs++ if ($i >= ($num-1));
$be++ if ($i < ($num-1));
}
&bn_str(&bn_ary($r,$i),$c0);
}
sub combas_sqr
{
local($r,$a,$num,$c0,$c1,$c2)=@_;
local($i,$as,$ae,$bs,$be,$ai,$bi);
local($b,$tot,$end,$half);
$b=$a;
$as=0;
$ae=0;
$bs=0;
$be=0;
$tot=$num+$num-1;
&bn_clr($c0);
&bn_clr($c1);
for ($i=0; $i<$tot; $i++)
{
$ai=$as;
$bi=$bs;
$end=$be+1;
@numa=@numb=();
#print "($as $ae) ($bs $be) $bs -> $end [$i $num]\n";
for ($j=$bs; $j<$end; $j++)
{
push(@numa,$ai);
push(@numb,$bi);
$ai--;
$bi++;
last if ($ai < $bi);
}
if (!($i & 1))
{
@numa=reverse(@numa);
@numb=reverse(@numb);
}
&bn_clr($c2);
for ($j=0; $j <= $#numa; $j++)
{
if ($numa[$j] == $numb[$j])
{&bn_sad($a,$numa[$j],$numb[$j],$c0,$c1,$c2,1);}
else
{&bn_sad($a,$numa[$j],$numb[$j],$c0,$c1,$c2,2);}
}
&bn_str(&bn_ary($r,$i),$c0);
($c0,$c1,$c2)=($c1,$c2,$c0);
$as++ if ($i < ($num-1));
$ae++ if ($i >= ($num-1));
$bs++ if ($i >= ($num-1));
$be++ if ($i < ($num-1));
}
&bn_str(&bn_ary($r,$i),$c0);
}
|
