push(@INC,"perlasm","../../perlasm");
require "alpha.pl";
&asm_init($ARGV[0],$0);
print &bn_sub_words("bn_sub_words");
&asm_finish();
sub bn_sub_words
{
local($name)=@_;
local($cc,$a,$b,$r);
$cc="r0";
$a0="r1"; $b0="r5"; $r0="r9"; $tmp="r13";
$a1="r2"; $b1="r6"; $r1="r10"; $t1="r14";
$a2="r3"; $b2="r7"; $r2="r11";
$a3="r4"; $b3="r8"; $r3="r12"; $t3="r15";
$rp=&wparam(0);
$ap=&wparam(1);
$bp=&wparam(2);
$count=&wparam(3);
&function_begin($name,"");
&comment("");
&sub($count,4,$count);
&mov("zero",$cc);
&blt($count,&label("finish"));
&ld($a0,&QWPw(0,$ap));
&ld($b0,&QWPw(0,$bp));
&set_label("loop");
&ld($a1,&QWPw(1,$ap));
&cmpult($a0,$b0,$tmp); &ld($b1,&QWPw(1,$bp));
&sub($a0,$b0,$a0); &ld($a2,&QWPw(2,$ap));
&cmpult($a0,$cc,$b0); &ld($b2,&QWPw(2,$bp));
&sub($a0,$cc,$a0); &ld($a3,&QWPw(3,$ap));
&add($b0,$tmp,$cc);
&cmpult($a1,$b1,$t1); &sub($a1,$b1,$a1); &ld($b3,&QWPw(3,$bp));
&cmpult($a1,$cc,$b1); &sub($a1,$cc,$a1); &add($b1,$t1,$cc);
&cmpult($a2,$b2,$tmp); &sub($a2,$b2,$a2); &st($a0,&QWPw(0,$rp)); &cmpult($a2,$cc,$b2); &sub($a2,$cc,$a2); &add($b2,$tmp,$cc);
&cmpult($a3,$b3,$t3); &sub($a3,$b3,$a3); &st($a1,&QWPw(1,$rp)); &cmpult($a3,$cc,$b3); &sub($a3,$cc,$a3); &add($b3,$t3,$cc);
&st($a2,&QWPw(2,$rp)); &sub($count,4,$count); &st($a3,&QWPw(3,$rp)); &add($ap,4*$QWS,$ap); &add($bp,4*$QWS,$bp); &add($rp,4*$QWS,$rp);
&blt($count,&label("finish"));
&ld($a0,&QWPw(0,$ap));
&ld($b0,&QWPw(0,$bp));
&br(&label("loop"));
&set_label("last_loop");
&ld($a0,&QWPw(0,$ap)); &ld($b0,&QWPw(0,$bp)); &cmpult($a0,$b0,$tmp); &sub($a0,$b0,$a0); &cmpult($a0,$cc,$b0); &sub($a0,$cc,$a0); &st($a0,&QWPw(0,$rp)); &add($b0,$tmp,$cc);
&add($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($count,&label("last_loop"));
&set_label("end");
&function_end($name);
}