155714Skris#!/usr/local/bin/perl 255714Skris# x86 assember 355714Skris 455714Skrissub bn_mul_words 555714Skris { 655714Skris local($name)=@_; 755714Skris 855714Skris &function_begin($name,""); 955714Skris 1055714Skris &comment(""); 1155714Skris $Low="eax"; 1255714Skris $High="edx"; 1355714Skris $a="ebx"; 1455714Skris $w="ecx"; 1555714Skris $r="edi"; 1655714Skris $c="esi"; 1755714Skris $num="ebp"; 1855714Skris 1955714Skris &xor($c,$c); # clear carry 2055714Skris &mov($r,&wparam(0)); # 2155714Skris &mov($a,&wparam(1)); # 2255714Skris &mov($num,&wparam(2)); # 2355714Skris &mov($w,&wparam(3)); # 2455714Skris 2555714Skris &and($num,0xfffffff8); # num / 8 2655714Skris &jz(&label("mw_finish")); 2755714Skris 2855714Skris &set_label("mw_loop",0); 2955714Skris for ($i=0; $i<32; $i+=4) 3055714Skris { 3155714Skris &comment("Round $i"); 3255714Skris 3355714Skris &mov("eax",&DWP($i,$a,"",0)); # *a 3455714Skris &mul($w); # *a * w 3555714Skris &add("eax",$c); # L(t)+=c 3655714Skris # XXX 3755714Skris 3855714Skris &adc("edx",0); # H(t)+=carry 3955714Skris &mov(&DWP($i,$r,"",0),"eax"); # *r= L(t); 4055714Skris 4155714Skris &mov($c,"edx"); # c= H(t); 4255714Skris } 4355714Skris 4455714Skris &comment(""); 4555714Skris &add($a,32); 4655714Skris &add($r,32); 4755714Skris &sub($num,8); 4855714Skris &jz(&label("mw_finish")); 4955714Skris &jmp(&label("mw_loop")); 5055714Skris 5155714Skris &set_label("mw_finish",0); 5255714Skris &mov($num,&wparam(2)); # get num 5355714Skris &and($num,7); 5455714Skris &jnz(&label("mw_finish2")); 5555714Skris &jmp(&label("mw_end")); 5655714Skris 5755714Skris &set_label("mw_finish2",1); 5855714Skris for ($i=0; $i<7; $i++) 5955714Skris { 6055714Skris &comment("Tail Round $i"); 6155714Skris &mov("eax",&DWP($i*4,$a,"",0));# *a 6255714Skris &mul($w); # *a * w 6355714Skris &add("eax",$c); # L(t)+=c 6455714Skris # XXX 6555714Skris &adc("edx",0); # H(t)+=carry 6655714Skris &mov(&DWP($i*4,$r,"",0),"eax");# *r= L(t); 6755714Skris &mov($c,"edx"); # c= H(t); 6855714Skris &dec($num) if ($i != 7-1); 6955714Skris &jz(&label("mw_end")) if ($i != 7-1); 7055714Skris } 7155714Skris &set_label("mw_end",0); 7255714Skris &mov("eax",$c); 7355714Skris 7455714Skris &function_end($name); 7555714Skris } 7655714Skris 7755714Skris1; 78