| #!/usr/local/bin/perl |
| # alpha assember |
| |
| sub bn_mul_words |
| { |
| local($name)=@_; |
| local($cc,$a,$b,$r,$couny); |
| |
| &init_pool(4); |
| ($cc)=GR("r0"); |
| |
| $rp=&wparam(0); |
| $ap=&wparam(1); |
| $count=&wparam(2); |
| $word=&wparam(3); |
| |
| &function_begin($name,""); |
| |
| &comment(""); |
| &sub($count,4,$count); |
| &mov("zero",$cc); |
| ### |
| &blt($count,&label("finish")); |
| |
| ($a0)=&NR(1); &ld($a0,&QWPw(0,$ap)); |
| |
| &set_label("loop"); |
| |
| ($a1)=&NR(1); &ld($a1,&QWPw(1,$ap)); |
| ($a2)=&NR(1); &ld($a2,&QWPw(2,$ap)); |
| |
| &muh($a0,$word,($h0)=&NR(1)); &FR($a0); |
| ($a3)=&NR(1); &ld($a3,&QWPw(3,$ap)); |
| ### wait 8 |
| &mul($a0,$word,($l0)=&NR(1)); &FR($a0); |
| ### wait 8 |
| &muh($a1,$word,($h1)=&NR(1)); &FR($a1); |
| &add($l0,$cc,$l0); ### wait 8 |
| &mul($a1,$word,($l1)=&NR(1)); &FR($a1); |
| &cmpult($l0,$cc,$cc); ### wait 8 |
| &muh($a2,$word,($h2)=&NR(1)); &FR($a2); |
| &add($h0,$cc,$cc); &FR($h0); ### wait 8 |
| &mul($a2,$word,($l2)=&NR(1)); &FR($a2); |
| &add($l1,$cc,$l1); ### wait 8 |
| &st($l0,&QWPw(0,$rp)); &FR($l0); |
| &cmpult($l1,$cc,$cc); ### wait 8 |
| &muh($a3,$word,($h3)=&NR(1)); &FR($a3); |
| &add($h1,$cc,$cc); &FR($h1); |
| &mul($a3,$word,($l3)=&NR(1)); &FR($a3); |
| &add($l2,$cc,$l2); |
| &st($l1,&QWPw(1,$rp)); &FR($l1); |
| &cmpult($l2,$cc,$cc); |
| &add($h2,$cc,$cc); &FR($h2); |
| &sub($count,4,$count); # count-=4 |
| &st($l2,&QWPw(2,$rp)); &FR($l2); |
| &add($l3,$cc,$l3); |
| &cmpult($l3,$cc,$cc); |
| &add($bp,4*$QWS,$bp); # count+=4 |
| &add($h3,$cc,$cc); &FR($h3); |
| &add($ap,4*$QWS,$ap); # count+=4 |
| &st($l3,&QWPw(3,$rp)); &FR($l3); |
| &add($rp,4*$QWS,$rp); # count+=4 |
| ### |
| &blt($count,&label("finish")); |
| ($a0)=&NR(1); &ld($a0,&QWPw(0,$ap)); |
| &br(&label("finish")); |
| ################################################## |
| |
| ################################################## |
| # Do the last 0..3 words |
| |
| &set_label("last_loop"); |
| |
| &ld(($a0)=&NR(1),&QWPw(0,$ap)); # get a |
| ### |
| ### |
| ### |
| &muh($a0,$word,($h0)=&NR(1)); |
| ### Wait 8 for next mul issue |
| &mul($a0,$word,($l0)=&NR(1)); &FR($a0) |
| &add($ap,$QWS,$ap); |
| ### Loose 12 until result is available |
| &add($rp,$QWS,$rp); |
| &sub($count,1,$count); |
| &add($l0,$cc,$l0); |
| ### |
| &st($l0,&QWPw(-1,$rp)); &FR($l0); |
| &cmpult($l0,$cc,$cc); |
| &add($h0,$cc,$cc); &FR($h0); |
| &bgt($count,&label("last_loop")); |
| &function_end_A($name); |
| |
| ###################################################### |
| &set_label("finish"); |
| &add($count,4,$count); |
| &bgt($count,&label("last_loop")); |
| |
| &set_label("end"); |
| &function_end($name); |
| |
| &fin_pool; |
| } |
| |
| 1; |