--- /dev/null
+#!/usr/local/bin/perl
+# x86 assember
+
+sub mul_add_c
+ {
+ local($a,$ai,$b,$bi,$c0,$c1,$c2,$pos,$i,$na,$nb)=@_;
+
+ # pos == -1 if eax and edx are pre-loaded, 0 to load from next
+ # words, and 1 if load return value
+
+ &comment("mul a[$ai]*b[$bi]");
+
+ # "eax" and "edx" will always be pre-loaded.
+ # &mov("eax",&DWP($ai*4,$a,"",0)) ;
+ # &mov("edx",&DWP($bi*4,$b,"",0));
+
+ &mul("edx");
+ &add($c0,"eax");
+ &mov("eax",&DWP(($na)*4,$a,"",0)) if $pos == 0; # laod next a
+ &mov("eax",&wparam(0)) if $pos > 0; # load r[]
+ ###
+ &adc($c1,"edx");
+ &mov("edx",&DWP(($nb)*4,$b,"",0)) if $pos == 0; # laod next b
+ &mov("edx",&DWP(($nb)*4,$b,"",0)) if $pos == 1; # laod next b
+ ###
+ &adc($c2,0);
+ # is pos > 1, it means it is the last loop
+ &mov(&DWP($i*4,"eax","",0),$c0) if $pos > 0; # save r[];
+ &mov("eax",&DWP(($na)*4,$a,"",0)) if $pos == 1; # laod next a
+ }
+
+sub sqr_add_c
+ {
+ local($r,$a,$ai,$bi,$c0,$c1,$c2,$pos,$i,$na,$nb)=@_;
+
+ # pos == -1 if eax and edx are pre-loaded, 0 to load from next
+ # words, and 1 if load return value
+
+ &comment("sqr a[$ai]*a[$bi]");
+
+ # "eax" and "edx" will always be pre-loaded.
+ # &mov("eax",&DWP($ai*4,$a,"",0)) ;
+ # &mov("edx",&DWP($bi*4,$b,"",0));
+
+ if ($ai == $bi)
+ { &mul("eax");}
+ else
+ { &mul("edx");}
+ &add($c0,"eax");
+ &mov("eax",&DWP(($na)*4,$a,"",0)) if $pos == 0; # load next a
+ ###
+ &adc($c1,"edx");
+ &mov("edx",&DWP(($nb)*4,$a,"",0)) if ($pos == 1) && ($na != $nb);
+ ###
+ &adc($c2,0);
+ # is pos > 1, it means it is the last loop
+ &mov(&DWP($i*4,$r,"",0),$c0) if $pos > 0; # save r[];
+ &mov("eax",&DWP(($na)*4,$a,"",0)) if $pos == 1; # load next b
+ }
+
+sub sqr_add_c2
+ {
+ local($r,$a,$ai,$bi,$c0,$c1,$c2,$pos,$i,$na,$nb)=@_;
+
+ # pos == -1 if eax and edx are pre-loaded, 0 to load from next
+ # words, and 1 if load return value
+
+ &comment("sqr a[$ai]*a[$bi]");
+
+ # "eax" and "edx" will always be pre-loaded.
+ # &mov("eax",&DWP($ai*4,$a,"",0)) ;
+ # &mov("edx",&DWP($bi*4,$a,"",0));
+
+ if ($ai == $bi)
+ { &mul("eax");}
+ else
+ { &mul("edx");}
+ &add("eax","eax");
+ ###
+ &adc("edx","edx");
+ ###
+ &adc($c2,0);
+ &add($c0,"eax");
+ &adc($c1,"edx");
+ &mov("eax",&DWP(($na)*4,$a,"",0)) if $pos == 0; # load next a
+ &mov("eax",&DWP(($na)*4,$a,"",0)) if $pos == 1; # load next b
+ &adc($c2,0);
+ &mov(&DWP($i*4,$r,"",0),$c0) if $pos > 0; # save r[];
+ &mov("edx",&DWP(($nb)*4,$a,"",0)) if ($pos <= 1) && ($na != $nb);
+ ###
+ }
+
+sub bn_mul_comba
+ {
+ local($name,$num)=@_;
+ local($a,$b,$c0,$c1,$c2);
+ local($i,$as,$ae,$bs,$be,$ai,$bi);
+ local($tot,$end);
+
+ &function_begin_B($name,"");
+
+ $c0="ebx";
+ $c1="ecx";
+ $c2="ebp";
+ $a="esi";
+ $b="edi";
+
+ $as=0;
+ $ae=0;
+ $bs=0;
+ $be=0;
+ $tot=$num+$num-1;
+
+ &push("esi");
+ &mov($a,&wparam(1));
+ &push("edi");
+ &mov($b,&wparam(2));
+ &push("ebp");
+ &push("ebx");
+
+ &xor($c0,$c0);
+ &mov("eax",&DWP(0,$a,"",0)); # load the first word
+ &xor($c1,$c1);
+ &mov("edx",&DWP(0,$b,"",0)); # load the first second
+
+ for ($i=0; $i<$tot; $i++)
+ {
+ $ai=$as;
+ $bi=$bs;
+ $end=$be+1;
+
+ &comment("################## Calculate word $i");
+
+ for ($j=$bs; $j<$end; $j++)
+ {
+ &xor($c2,$c2) if ($j == $bs);
+ if (($j+1) == $end)
+ {
+ $v=1;
+ $v=2 if (($i+1) == $tot);
+ }
+ else
+ { $v=0; }
+ if (($j+1) != $end)
+ {
+ $na=($ai-1);
+ $nb=($bi+1);
+ }
+ else
+ {
+ $na=$as+($i < ($num-1));
+ $nb=$bs+($i >= ($num-1));
+ }
+#printf STDERR "[$ai,$bi] -> [$na,$nb]\n";
+ &mul_add_c($a,$ai,$b,$bi,$c0,$c1,$c2,$v,$i,$na,$nb);
+ if ($v)
+ {
+ &comment("saved r[$i]");
+ # &mov("eax",&wparam(0));
+ # &mov(&DWP($i*4,"eax","",0),$c0);
+ ($c0,$c1,$c2)=($c1,$c2,$c0);
+ }
+ $ai--;
+ $bi++;
+ }
+ $as++ if ($i < ($num-1));
+ $ae++ if ($i >= ($num-1));
+
+ $bs++ if ($i >= ($num-1));
+ $be++ if ($i < ($num-1));
+ }
+ &comment("save r[$i]");
+ # &mov("eax",&wparam(0));
+ &mov(&DWP($i*4,"eax","",0),$c0);
+
+ &pop("ebx");
+ &pop("ebp");
+ &pop("edi");
+ &pop("esi");
+ &ret();
+ &function_end_B($name);
+ }
+
+sub bn_sqr_comba
+ {
+ local($name,$num)=@_;
+ local($r,$a,$c0,$c1,$c2)=@_;
+ local($i,$as,$ae,$bs,$be,$ai,$bi);
+ local($b,$tot,$end,$half);
+
+ &function_begin_B($name,"");
+
+ $c0="ebx";
+ $c1="ecx";
+ $c2="ebp";
+ $a="esi";
+ $r="edi";
+
+ &push("esi");
+ &push("edi");
+ &push("ebp");
+ &push("ebx");
+ &mov($r,&wparam(0));
+ &mov($a,&wparam(1));
+ &xor($c0,$c0);
+ &xor($c1,$c1);
+ &mov("eax",&DWP(0,$a,"",0)); # load the first word
+
+ $as=0;
+ $ae=0;
+ $bs=0;
+ $be=0;
+ $tot=$num+$num-1;
+
+ for ($i=0; $i<$tot; $i++)
+ {
+ $ai=$as;
+ $bi=$bs;
+ $end=$be+1;
+
+ &comment("############### Calculate word $i");
+ for ($j=$bs; $j<$end; $j++)
+ {
+ &xor($c2,$c2) if ($j == $bs);
+ if (($ai-1) < ($bi+1))
+ {
+ $v=1;
+ $v=2 if ($i+1) == $tot;
+ }
+ else
+ { $v=0; }
+ if (!$v)
+ {
+ $na=$ai-1;
+ $nb=$bi+1;
+ }
+ else
+ {
+ $na=$as+($i < ($num-1));
+ $nb=$bs+($i >= ($num-1));
+ }
+ if ($ai == $bi)
+ {
+ &sqr_add_c($r,$a,$ai,$bi,
+ $c0,$c1,$c2,$v,$i,$na,$nb);
+ }
+ else
+ {
+ &sqr_add_c2($r,$a,$ai,$bi,
+ $c0,$c1,$c2,$v,$i,$na,$nb);
+ }
+ if ($v)
+ {
+ &comment("saved r[$i]");
+ #&mov(&DWP($i*4,$r,"",0),$c0);
+ ($c0,$c1,$c2)=($c1,$c2,$c0);
+ last;
+ }
+ $ai--;
+ $bi++;
+ }
+ $as++ if ($i < ($num-1));
+ $ae++ if ($i >= ($num-1));
+
+ $bs++ if ($i >= ($num-1));
+ $be++ if ($i < ($num-1));
+ }
+ &mov(&DWP($i*4,$r,"",0),$c0);
+ &pop("ebx");
+ &pop("ebp");
+ &pop("edi");
+ &pop("esi");
+ &ret();
+ &function_end_B($name);
+ }
+
+1;
projects / openssl.git / blobdiff