#!/usr/local/bin/perl# I have this in perl so I can use more usefull register names and then convert# them into alpha registers.#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,$tmp);	# will we borrow?	&ld($b1,&QWPw(1,$bp));	 &sub($a0,$b0,$a0);		# do the subtract	&ld($a2,&QWPw(2,$ap));	 &cmpult($a0,$cc,$b0);	# will we borrow?	&ld($b2,&QWPw(2,$bp));	 &sub($a0,$cc,$a0);	# will we borrow?	&ld($a3,&QWPw(3,$ap));	 &add($b0,$tmp,$cc);	# add the borrows	&cmpult($a1,$b1,$t1);	# will we borrow?	 &sub($a1,$b1,$a1);	# do the subtract	&ld($b3,&QWPw(3,$bp));	 &cmpult($a1,$cc,$b1);	# will we borrow?	&sub($a1,$cc,$a1);	# will we borrow?	 &add($b1,$t1,$cc);	# add the borrows	&cmpult($a2,$b2,$tmp);	# will we borrow?	 &sub($a2,$b2,$a2);		# do the subtract	&st($a0,&QWPw(0,$rp));	# save	 &cmpult($a2,$cc,$b2);	# will we borrow?	&sub($a2,$cc,$a2);	# will we borrow?	 &add($b2,$tmp,$cc);	# add the borrows	&cmpult($a3,$b3,$t3);	# will we borrow?	 &sub($a3,$b3,$a3);		# do the subtract	&st($a1,&QWPw(1,$rp));	# save	 &cmpult($a3,$cc,$b3);	# will we borrow?	&sub($a3,$cc,$a3);	# will we borrow?	 &add($b3,$t3,$cc);	# add the borrows	&st($a2,&QWPw(2,$rp));	# save	 &sub($count,4,$count);	# count-=4	&st($a3,&QWPw(3,$rp));	# save	 &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	&set_label("last_loop");	&ld($a0,&QWPw(0,$ap));	# get a	 &ld($b0,&QWPw(0,$bp));	# get b	&cmpult($a0,$b0,$tmp);	# will we borrow?	&sub($a0,$b0,$a0);	# do the subtract	&cmpult($a0,$cc,$b0);	# will we borrow?	&sub($a0,$cc,$a0);	# will we borrow?	&st($a0,&QWPw(0,$rp));	# save	&add($b0,$tmp,$cc);	# add the borrows	&add($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);	}