120 lines
2.4 KiB
Perl
120 lines
2.4 KiB
Perl
|
#!/usr/local/bin/perl
|
||
|
|
# alpha assember
|
||
|
|
|
||
|
|
sub bn_add_words
|
||
|
|
{
|
||
|
|
local($name)=@_;
|
||
|
|
local($cc,$a,$b,$r);
|
||
|
|
|
||
|
|
&init_pool(4);
|
||
|
|
($cc)=GR("r0");
|
||
|
|
|
||
|
|
$rp=&wparam(0);
|
||
|
|
$ap=&wparam(1);
|
||
|
|
$bp=&wparam(2);
|
||
|
|
$count=&wparam(3);
|
||
|
|
|
||
|
|
&function_begin($name,"");
|
||
|
|
|
||
|
|
&comment("");
|
||
|
|
&sub($count,4,$count);
|
||
|
|
&mov("zero",$cc);
|
||
|
|
&br(&label("finish"));
|
||
|
|
&blt($count,&label("finish"));
|
||
|
|
|
||
|
|
($a0,$b0)=&NR(2);
|
||
|
|
&ld($a0,&QWPw(0,$ap));
|
||
|
|
&ld($b0,&QWPw(0,$bp));
|
||
|
|
|
||
|
|
##########################################################
|
||
|
|
&set_label("loop");
|
||
|
|
|
||
|
|
($a1)=&NR(1); &ld($a1,&QWPw(1,$ap));
|
||
|
|
($b1)=&NR(1); &ld($b1,&QWPw(1,$bp));
|
||
|
|
($a2)=&NR(1); &ld($a2,&QWPw(2,$ap));
|
||
|
|
($b2)=&NR(1); &ld($b2,&QWPw(2,$bp));
|
||
|
|
($a3)=&NR(1); &ld($a3,&QWPw(3,$ap));
|
||
|
|
($b3)=&NR(1); &ld($b3,&QWPw(3,$bp));
|
||
|
|
|
||
|
|
($o0,$t0)=&NR(2);
|
||
|
|
&add($a0,$b0,$o0);
|
||
|
|
&cmpult($o0,$b0,$t0);
|
||
|
|
&add($o0,$cc,$o0);
|
||
|
|
&cmpult($o0,$cc,$cc);
|
||
|
|
&add($cc,$t0,$cc); &FR($t0);
|
||
|
|
|
||
|
|
($t1,$o1)=&NR(2);
|
||
|
|
|
||
|
|
&add($a1,$b1,$o1); &FR($a1);
|
||
|
|
&cmpult($o1,$b1,$t1); &FR($b1);
|
||
|
|
&add($o1,$cc,$o1);
|
||
|
|
&cmpult($o1,$cc,$cc);
|
||
|
|
&add($cc,$t1,$cc); &FR($t1);
|
||
|
|
|
||
|
|
($t2,$o2)=&NR(2);
|
||
|
|
|
||
|
|
&add($a2,$b2,$o2); &FR($a2);
|
||
|
|
&cmpult($o2,$b2,$t2); &FR($b2);
|
||
|
|
&add($o2,$cc,$o2);
|
||
|
|
&cmpult($o2,$cc,$cc);
|
||
|
|
&add($cc,$t2,$cc); &FR($t2);
|
||
|
|
|
||
|
|
($t3,$o3)=&NR(2);
|
||
|
|
|
||
|
|
&add($a3,$b3,$o3); &FR($a3);
|
||
|
|
&cmpult($o3,$b3,$t3); &FR($b3);
|
||
|
|
&add($o3,$cc,$o3);
|
||
|
|
&cmpult($o3,$cc,$cc);
|
||
|
|
&add($cc,$t3,$cc); &FR($t3);
|
||
|
|
|
||
|
|
&st($o0,&QWPw(0,$rp)); &FR($o0);
|
||
|
|
&st($o1,&QWPw(0,$rp)); &FR($o1);
|
||
|
|
&st($o2,&QWPw(0,$rp)); &FR($o2);
|
||
|
|
&st($o3,&QWPw(0,$rp)); &FR($o3);
|
||
|
|
|
||
|
|
&sub($count,4,$count); # count-=4
|
||
|
|
&add($ap,4*$QWS,$ap); # count+=4
|
||
|
|
&add($bp,4*$QWS,$bp); # count+=4
|
||
|
|
&add($rp,4*$QWS,$rp); # count+=4
|
||
|
|
|
||
|
|
&blt($count,&label("finish"));
|
||
|
|
&ld($a0,&QWPw(0,$ap));
|
||
|
|
&ld($b0,&QWPw(0,$bp));
|
||
|
|
&br(&label("loop"));
|
||
|
|
##################################################
|
||
|
|
# Do the last 0..3 words
|
||
|
|
|
||
|
|
($t0,$o0)=&NR(2);
|
||
|
|
&set_label("last_loop");
|
||
|
|
|
||
|
|
&ld($a0,&QWPw(0,$ap)); # get a
|
||
|
|
&ld($b0,&QWPw(0,$bp)); # get b
|
||
|
|
|
||
|
|
&add($a0,$b0,$o0);
|
||
|
|
&cmpult($o0,$b0,$t0); # will we borrow?
|
||
|
|
&add($o0,$cc,$o0); # will we borrow?
|
||
|
|
&cmpult($o0,$cc,$cc); # will we borrow?
|
||
|
|
&add($cc,$t0,$cc); # add the borrows
|
||
|
|
&st($o0,&QWPw(0,$rp)); # save
|
||
|
|
|
||
|
|
&add($ap,$QWS,$ap);
|
||
|
|
&add($bp,$QWS,$bp);
|
||
|
|
&add($rp,$QWS,$rp);
|
||
|
|
&sub($count,1,$count);
|
||
|
|
&bgt($count,&label("last_loop"));
|
||
|
|
&function_end_A($name);
|
||
|
|
|
||
|
|
######################################################
|
||
|
|
&set_label("finish");
|
||
|
|
&add($count,4,$count);
|
||
|
|
&bgt($count,&label("last_loop"));
|
||
|
|
|
||
|
|
&FR($o0,$t0,$a0,$b0);
|
||
|
|
&set_label("end");
|
||
|
|
&function_end($name);
|
||
|
|
|
||
|
|
&fin_pool;
|
||
|
|
}
|
||
|
|
|
||
|
|
1;
|