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openssl/crypto/bn/asm/mo-586.pl

Index: openssl/crypto/bn/asm/mo-586.pl
===================================================================
--- openssl/crypto/bn/asm/mo-586.pl	(revision 105093)
+++ openssl/crypto/bn/asm/mo-586.pl	(working copy)
@@ -1,603 +0,0 @@
-#!/usr/bin/env perl
-
-# This is crypto/bn/asm/x86-mont.pl (with asciz from crypto/perlasm/x86asm.pl)
-# from OpenSSL 0.9.9-dev 
-
-sub ::asciz
-{ my @str=unpack("C*",shift);
-    push @str,0;
-    while ($#str>15) {
-	&data_byte(@str[0..15]);
-	foreach (0..15) { shift @str; }
-    }
-    &data_byte(@str) if (@str);
-}
-
-# ====================================================================
-# Written by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL
-# project. The module is, however, dual licensed under OpenSSL and
-# CRYPTOGAMS licenses depending on where you obtain it. For further
-# details see http://www.openssl.org/~appro/cryptogams/.
-# ====================================================================
-
-# October 2005
-#
-# This is a "teaser" code, as it can be improved in several ways...
-# First of all non-SSE2 path should be implemented (yes, for now it
-# performs Montgomery multiplication/convolution only on SSE2-capable
-# CPUs such as P4, others fall down to original code). Then inner loop
-# can be unrolled and modulo-scheduled to improve ILP and possibly
-# moved to 128-bit XMM register bank (though it would require input
-# rearrangement and/or increase bus bandwidth utilization). Dedicated
-# squaring procedure should give further performance improvement...
-# Yet, for being draft, the code improves rsa512 *sign* benchmark by
-# 110%(!), rsa1024 one - by 70% and rsa4096 - by 20%:-)
-
-# December 2006
-#
-# Modulo-scheduling SSE2 loops results in further 15-20% improvement.
-# Integer-only code [being equipped with dedicated squaring procedure]
-# gives ~40% on rsa512 sign benchmark...
-
-push(@INC,"perlasm","../../perlasm");
-require "x86asm.pl";
-
-&asm_init($ARGV[0],$0);
-
-$sse2=0;
-for (@ARGV) { $sse2=1 if (/-DOPENSSL_IA32_SSE2/); }
-
-&external_label("OPENSSL_ia32cap_P") if ($sse2);
-
-&function_begin("bn_mul_mont");
-
-$i="edx";
-$j="ecx";
-$ap="esi";	$tp="esi";		# overlapping variables!!!
-$rp="edi";	$bp="edi";		# overlapping variables!!!
-$np="ebp";
-$num="ebx";
-
-$_num=&DWP(4*0,"esp");			# stack top layout
-$_rp=&DWP(4*1,"esp");
-$_ap=&DWP(4*2,"esp");
-$_bp=&DWP(4*3,"esp");
-$_np=&DWP(4*4,"esp");
-$_n0=&DWP(4*5,"esp");	$_n0q=&QWP(4*5,"esp");
-$_sp=&DWP(4*6,"esp");
-$_bpend=&DWP(4*7,"esp");
-$frame=32;				# size of above frame rounded up to 16n
-
-	&xor	("eax","eax");
-	&mov	("edi",&wparam(5));	# int num
-	&cmp	("edi",4);
-	&jl	(&label("just_leave"));
-
-	&lea	("esi",&wparam(0));	# put aside pointer to argument block
-	&lea	("edx",&wparam(1));	# load ap
-	&mov	("ebp","esp");		# saved stack pointer!
-	&add	("edi",2);		# extra two words on top of tp
-	&neg	("edi");
-	&lea	("esp",&DWP(-$frame,"esp","edi",4));	# alloca($frame+4*(num+2))
-	&neg	("edi");
-
-	# minimize cache contention by arraning 2K window between stack
-	# pointer and ap argument [np is also position sensitive vector,
-	# but it's assumed to be near ap, as it's allocated at ~same
-	# time].
-	&mov	("eax","esp");
-	&sub	("eax","edx");
-	&and	("eax",2047);
-	&sub	("esp","eax");		# this aligns sp and ap modulo 2048
-
-	&xor	("edx","esp");
-	&and	("edx",2048);
-	&xor	("edx",2048);
-	&sub	("esp","edx");		# this splits them apart modulo 4096
-
-	&and	("esp",-64);		# align to cache line
-
-	################################# load argument block...
-	&mov	("eax",&DWP(0*4,"esi"));# BN_ULONG *rp
-	&mov	("ebx",&DWP(1*4,"esi"));# const BN_ULONG *ap
-	&mov	("ecx",&DWP(2*4,"esi"));# const BN_ULONG *bp
-	&mov	("edx",&DWP(3*4,"esi"));# const BN_ULONG *np
-	&mov	("esi",&DWP(4*4,"esi"));# const BN_ULONG *n0
-	#&mov	("edi",&DWP(5*4,"esi"));# int num
-
-	&mov	("esi",&DWP(0,"esi"));	# pull n0[0]
-	&mov	($_rp,"eax");		# ... save a copy of argument block
-	&mov	($_ap,"ebx");
-	&mov	($_bp,"ecx");
-	&mov	($_np,"edx");
-	&mov	($_n0,"esi");
-	&lea	($num,&DWP(-3,"edi"));	# num=num-1 to assist modulo-scheduling
-	#&mov	($_num,$num);		# redundant as $num is not reused
-	&mov	($_sp,"ebp");		# saved stack pointer!
-
-if($sse2) {
-$acc0="mm0";	# mmx register bank layout
-$acc1="mm1";
-$car0="mm2";
-$car1="mm3";
-$mul0="mm4";
-$mul1="mm5";
-$temp="mm6";
-$mask="mm7";
-
-	&picmeup("eax","OPENSSL_ia32cap_P");
-	&bt	(&DWP(0,"eax"),26);
-	&jnc	(&label("non_sse2"));
-
-	&mov	("eax",-1);
-	&movd	($mask,"eax");		# mask 32 lower bits
-
-	&mov	($ap,$_ap);		# load input pointers
-	&mov	($bp,$_bp);
-	&mov	($np,$_np);
-
-	&xor	($i,$i);		# i=0
-	&xor	($j,$j);		# j=0
-
-	&movd	($mul0,&DWP(0,$bp));		# bp[0]
-	&movd	($mul1,&DWP(0,$ap));		# ap[0]
-	&movd	($car1,&DWP(0,$np));		# np[0]
-
-	&pmuludq($mul1,$mul0);			# ap[0]*bp[0]
-	&movq	($car0,$mul1);
-	&movq	($acc0,$mul1);			# I wish movd worked for
-	&pand	($acc0,$mask);			# inter-register transfers
-
-	&pmuludq($mul1,$_n0q);			# *=n0
-
-	&pmuludq($car1,$mul1);			# "t[0]"*np[0]*n0
-	&paddq	($car1,$acc0);
-
-	&movd	($acc1,&DWP(4,$np));		# np[1]
-	&movd	($acc0,&DWP(4,$ap));		# ap[1]
-
-	&psrlq	($car0,32);
-	&psrlq	($car1,32);
-
-	&inc	($j);				# j++
-&set_label("1st",16);
-	&pmuludq($acc0,$mul0);			# ap[j]*bp[0]
-	&pmuludq($acc1,$mul1);			# np[j]*m1
-	&paddq	($car0,$acc0);			# +=c0
-	&paddq	($car1,$acc1);			# +=c1
-
-	&movq	($acc0,$car0);
-	&pand	($acc0,$mask);
-	&movd	($acc1,&DWP(4,$np,$j,4));	# np[j+1]
-	&paddq	($car1,$acc0);			# +=ap[j]*bp[0];
-	&movd	($acc0,&DWP(4,$ap,$j,4));	# ap[j+1]
-	&psrlq	($car0,32);
-	&movd	(&DWP($frame-4,"esp",$j,4),$car1);	# tp[j-1]=
-	&psrlq	($car1,32);
-
-	&lea	($j,&DWP(1,$j));
-	&cmp	($j,$num);
-	&jl	(&label("1st"));
-
-	&pmuludq($acc0,$mul0);			# ap[num-1]*bp[0]
-	&pmuludq($acc1,$mul1);			# np[num-1]*m1
-	&paddq	($car0,$acc0);			# +=c0
-	&paddq	($car1,$acc1);			# +=c1
-
-	&movq	($acc0,$car0);
-	&pand	($acc0,$mask);
-	&paddq	($car1,$acc0);			# +=ap[num-1]*bp[0];
-	&movd	(&DWP($frame-4,"esp",$j,4),$car1);	# tp[num-2]=
-
-	&psrlq	($car0,32);
-	&psrlq	($car1,32);
-
-	&paddq	($car1,$car0);
-	&movq	(&QWP($frame,"esp",$num,4),$car1);	# tp[num].tp[num-1]
-
-	&inc	($i);				# i++
-&set_label("outer");
-	&xor	($j,$j);			# j=0
-
-	&movd	($mul0,&DWP(0,$bp,$i,4));	# bp[i]
-	&movd	($mul1,&DWP(0,$ap));		# ap[0]
-	&movd	($temp,&DWP($frame,"esp"));	# tp[0]
-	&movd	($car1,&DWP(0,$np));		# np[0]
-	&pmuludq($mul1,$mul0);			# ap[0]*bp[i]
-
-	&paddq	($mul1,$temp);			# +=tp[0]
-	&movq	($acc0,$mul1);
-	&movq	($car0,$mul1);
-	&pand	($acc0,$mask);
-
-	&pmuludq($mul1,$_n0q);			# *=n0
-
-	&pmuludq($car1,$mul1);
-	&paddq	($car1,$acc0);
-
-	&movd	($temp,&DWP($frame+4,"esp"));	# tp[1]
-	&movd	($acc1,&DWP(4,$np));		# np[1]
-	&movd	($acc0,&DWP(4,$ap));		# ap[1]
-
-	&psrlq	($car0,32);
-	&psrlq	($car1,32);
-	&paddq	($car0,$temp);			# +=tp[1]
-
-	&inc	($j);				# j++
-	&dec	($num);
-&set_label("inner");
-	&pmuludq($acc0,$mul0);			# ap[j]*bp[i]
-	&pmuludq($acc1,$mul1);			# np[j]*m1
-	&paddq	($car0,$acc0);			# +=c0
-	&paddq	($car1,$acc1);			# +=c1
-
-	&movq	($acc0,$car0);
-	&movd	($temp,&DWP($frame+4,"esp",$j,4));# tp[j+1]
-	&pand	($acc0,$mask);
-	&movd	($acc1,&DWP(4,$np,$j,4));	# np[j+1]
-	&paddq	($car1,$acc0);			# +=ap[j]*bp[i]+tp[j]
-	&movd	($acc0,&DWP(4,$ap,$j,4));	# ap[j+1]
-	&psrlq	($car0,32);
-	&movd	(&DWP($frame-4,"esp",$j,4),$car1);# tp[j-1]=
-	&psrlq	($car1,32);
-	&paddq	($car0,$temp);			# +=tp[j+1]
-
-	&dec	($num);
-	&lea	($j,&DWP(1,$j));		# j++
-	&jnz	(&label("inner"));
-
-	&mov	($num,$j);
-	&pmuludq($acc0,$mul0);			# ap[num-1]*bp[i]
-	&pmuludq($acc1,$mul1);			# np[num-1]*m1
-	&paddq	($car0,$acc0);			# +=c0
-	&paddq	($car1,$acc1);			# +=c1
-
-	&movq	($acc0,$car0);
-	&pand	($acc0,$mask);
-	&paddq	($car1,$acc0);			# +=ap[num-1]*bp[i]+tp[num-1]
-	&movd	(&DWP($frame-4,"esp",$j,4),$car1);	# tp[num-2]=
-	&psrlq	($car0,32);
-	&psrlq	($car1,32);
-
-	&movd	($temp,&DWP($frame+4,"esp",$num,4));	# += tp[num]
-	&paddq	($car1,$car0);
-	&paddq	($car1,$temp);
-	&movq	(&QWP($frame,"esp",$num,4),$car1);	# tp[num].tp[num-1]
-
-	&lea	($i,&DWP(1,$i));		# i++
-	&cmp	($i,$num);
-	&jle	(&label("outer"));
-
-	&emms	();				# done with mmx bank
-	&jmp	(&label("common_tail"));
-
-&set_label("non_sse2",16);
-}
-
-if (0) {
-	&mov	("esp",$_sp);
-	&xor	("eax","eax");	# signal "not fast enough [yet]"
-	&jmp	(&label("just_leave"));
-	# While the below code provides competitive performance for
-	# all key lengthes on modern Intel cores, it's still more
-	# than 10% slower for 4096-bit key elsewhere:-( "Competitive"
-	# means compared to the original integer-only assembler.
-	# 512-bit RSA sign is better by ~40%, but that's about all
-	# one can say about all CPUs...
-} else {
-$inp="esi";	# integer path uses these registers differently
-$word="edi";
-$carry="ebp";
-
-	&mov	($inp,$_ap);
-	&lea	($carry,&DWP(1,$num));
-	&mov	($word,$_bp);
-	&xor	($j,$j);				# j=0
-	&mov	("edx",$inp);
-	&and	($carry,1);				# see if num is even
-	&sub	("edx",$word);				# see if ap==bp
-	&lea	("eax",&DWP(4,$word,$num,4));		# &bp[num]
-	&or	($carry,"edx");
-	&mov	($word,&DWP(0,$word));			# bp[0]
-	&jz	(&label("bn_sqr_mont"));
-	&mov	($_bpend,"eax");
-	&mov	("eax",&DWP(0,$inp));
-	&xor	("edx","edx");
-
-&set_label("mull",16);
-	&mov	($carry,"edx");
-	&mul	($word);				# ap[j]*bp[0]
-	&add	($carry,"eax");
-	&lea	($j,&DWP(1,$j));
-	&adc	("edx",0);
-	&mov	("eax",&DWP(0,$inp,$j,4));		# ap[j+1]
-	&cmp	($j,$num);
-	&mov	(&DWP($frame-4,"esp",$j,4),$carry);	# tp[j]=
-	&jl	(&label("mull"));
-
-	&mov	($carry,"edx");
-	&mul	($word);				# ap[num-1]*bp[0]
-	 &mov	($word,$_n0);
-	&add	("eax",$carry);
-	 &mov	($inp,$_np);
-	&adc	("edx",0);
-	 &imul	($word,&DWP($frame,"esp"));		# n0*tp[0]
-
-	&mov	(&DWP($frame,"esp",$num,4),"eax");	# tp[num-1]=
-	&xor	($j,$j);
-	&mov	(&DWP($frame+4,"esp",$num,4),"edx");	# tp[num]=
-	&mov	(&DWP($frame+8,"esp",$num,4),$j);	# tp[num+1]=
-
-	&mov	("eax",&DWP(0,$inp));			# np[0]
-	&mul	($word);				# np[0]*m
-	&add	("eax",&DWP($frame,"esp"));		# +=tp[0]
-	&mov	("eax",&DWP(4,$inp));			# np[1]
-	&adc	("edx",0);
-	&inc	($j);
-
-	&jmp	(&label("2ndmadd"));
-
-&set_label("1stmadd",16);
-	&mov	($carry,"edx");
-	&mul	($word);				# ap[j]*bp[i]
-	&add	($carry,&DWP($frame,"esp",$j,4));	# +=tp[j]
-	&lea	($j,&DWP(1,$j));
-	&adc	("edx",0);
-	&add	($carry,"eax");
-	&mov	("eax",&DWP(0,$inp,$j,4));		# ap[j+1]
-	&adc	("edx",0);
-	&cmp	($j,$num);
-	&mov	(&DWP($frame-4,"esp",$j,4),$carry);	# tp[j]=
-	&jl	(&label("1stmadd"));
-
-	&mov	($carry,"edx");
-	&mul	($word);				# ap[num-1]*bp[i]
-	&add	("eax",&DWP($frame,"esp",$num,4));	# +=tp[num-1]
-	 &mov	($word,$_n0);
-	&adc	("edx",0);
-	 &mov	($inp,$_np);
-	&add	($carry,"eax");
-	&adc	("edx",0);
-	 &imul	($word,&DWP($frame,"esp"));		# n0*tp[0]
-
-	&xor	($j,$j);
-	&add	("edx",&DWP($frame+4,"esp",$num,4));	# carry+=tp[num]
-	&mov	(&DWP($frame,"esp",$num,4),$carry);	# tp[num-1]=
-	&adc	($j,0);
-	 &mov	("eax",&DWP(0,$inp));			# np[0]
-	&mov	(&DWP($frame+4,"esp",$num,4),"edx");	# tp[num]=
-	&mov	(&DWP($frame+8,"esp",$num,4),$j);	# tp[num+1]=
-
-	&mul	($word);				# np[0]*m
-	&add	("eax",&DWP($frame,"esp"));		# +=tp[0]
-	&mov	("eax",&DWP(4,$inp));			# np[1]
-	&adc	("edx",0);
-	&mov	($j,1);
-
-&set_label("2ndmadd",16);
-	&mov	($carry,"edx");
-	&mul	($word);				# np[j]*m
-	&add	($carry,&DWP($frame,"esp",$j,4));	# +=tp[j]
-	&lea	($j,&DWP(1,$j));
-	&adc	("edx",0);
-	&add	($carry,"eax");
-	&mov	("eax",&DWP(0,$inp,$j,4));		# np[j+1]
-	&adc	("edx",0);
-	&cmp	($j,$num);
-	&mov	(&DWP($frame-8,"esp",$j,4),$carry);	# tp[j-1]=
-	&jl	(&label("2ndmadd"));
-
-	&mov	($carry,"edx");
-	&mul	($word);				# np[j]*m
-	&add	($carry,&DWP($frame,"esp",$num,4));	# +=tp[num-1]
-	&adc	("edx",0);
-	&add	($carry,"eax");
-	&adc	("edx",0);
-	&mov	(&DWP($frame-4,"esp",$num,4),$carry);	# tp[num-2]=
-
-	&xor	("eax","eax");
-	 &mov	($j,$_bp);				# &bp[i]
-	&add	("edx",&DWP($frame+4,"esp",$num,4));	# carry+=tp[num]
-	&adc	("eax",&DWP($frame+8,"esp",$num,4));	# +=tp[num+1]
-	 &lea	($j,&DWP(4,$j));
-	&mov	(&DWP($frame,"esp",$num,4),"edx");	# tp[num-1]=
-	 &cmp	($j,$_bpend);
-	&mov	(&DWP($frame+4,"esp",$num,4),"eax");	# tp[num]=
-	&je	(&label("common_tail"));
-
-	&mov	($word,&DWP(0,$j));			# bp[i+1]
-	&mov	($inp,$_ap);
-	&mov	($_bp,$j);				# &bp[++i]
-	&xor	($j,$j);
-	&xor	("edx","edx");
-	&mov	("eax",&DWP(0,$inp));
-	&jmp	(&label("1stmadd"));
-
-&set_label("bn_sqr_mont",16);
-$sbit=$num;
-	&mov	($_num,$num);
-	&mov	($_bp,$j);				# i=0
-
-	&mov	("eax",$word);				# ap[0]
-	&mul	($word);				# ap[0]*ap[0]
-	&mov	(&DWP($frame,"esp"),"eax");		# tp[0]=
-	&mov	($sbit,"edx");
-	&shr	("edx",1);
-	&and	($sbit,1);
-	&inc	($j);
-&set_label("sqr",16);
-	&mov	("eax",&DWP(0,$inp,$j,4));		# ap[j]
-	&mov	($carry,"edx");
-	&mul	($word);				# ap[j]*ap[0]
-	&add	("eax",$carry);
-	&lea	($j,&DWP(1,$j));
-	&adc	("edx",0);
-	&lea	($carry,&DWP(0,$sbit,"eax",2));
-	&shr	("eax",31);
-	&cmp	($j,$_num);
-	&mov	($sbit,"eax");
-	&mov	(&DWP($frame-4,"esp",$j,4),$carry);	# tp[j]=
-	&jl	(&label("sqr"));
-
-	&mov	("eax",&DWP(0,$inp,$j,4));		# ap[num-1]
-	&mov	($carry,"edx");
-	&mul	($word);				# ap[num-1]*ap[0]
-	&add	("eax",$carry);
-	 &mov	($word,$_n0);
-	&adc	("edx",0);
-	 &mov	($inp,$_np);
-	&lea	($carry,&DWP(0,$sbit,"eax",2));
-	 &imul	($word,&DWP($frame,"esp"));		# n0*tp[0]
-	&shr	("eax",31);
-	&mov	(&DWP($frame,"esp",$j,4),$carry);	# tp[num-1]=
-
-	&lea	($carry,&DWP(0,"eax","edx",2));
-	 &mov	("eax",&DWP(0,$inp));			# np[0]
-	&shr	("edx",31);
-	&mov	(&DWP($frame+4,"esp",$j,4),$carry);	# tp[num]=
-	&mov	(&DWP($frame+8,"esp",$j,4),"edx");	# tp[num+1]=
-
-	&mul	($word);				# np[0]*m
-	&add	("eax",&DWP($frame,"esp"));		# +=tp[0]
-	&mov	($num,$j);
-	&adc	("edx",0);
-	&mov	("eax",&DWP(4,$inp));			# np[1]
-	&mov	($j,1);
-
-&set_label("3rdmadd",16);
-	&mov	($carry,"edx");
-	&mul	($word);				# np[j]*m
-	&add	($carry,&DWP($frame,"esp",$j,4));	# +=tp[j]
-	&adc	("edx",0);
-	&add	($carry,"eax");
-	&mov	("eax",&DWP(4,$inp,$j,4));		# np[j+1]
-	&adc	("edx",0);
-	&mov	(&DWP($frame-4,"esp",$j,4),$carry);	# tp[j-1]=
-
-	&mov	($carry,"edx");
-	&mul	($word);				# np[j+1]*m
-	&add	($carry,&DWP($frame+4,"esp",$j,4));	# +=tp[j+1]
-	&lea	($j,&DWP(2,$j));
-	&adc	("edx",0);
-	&add	($carry,"eax");
-	&mov	("eax",&DWP(0,$inp,$j,4));		# np[j+2]
-	&adc	("edx",0);
-	&cmp	($j,$num);
-	&mov	(&DWP($frame-8,"esp",$j,4),$carry);	# tp[j]=
-	&jl	(&label("3rdmadd"));
-
-	&mov	($carry,"edx");
-	&mul	($word);				# np[j]*m
-	&add	($carry,&DWP($frame,"esp",$num,4));	# +=tp[num-1]
-	&adc	("edx",0);
-	&add	($carry,"eax");
-	&adc	("edx",0);
-	&mov	(&DWP($frame-4,"esp",$num,4),$carry);	# tp[num-2]=
-
-	&mov	($j,$_bp);				# i
-	&xor	("eax","eax");
-	&mov	($inp,$_ap);
-	&add	("edx",&DWP($frame+4,"esp",$num,4));	# carry+=tp[num]
-	&adc	("eax",&DWP($frame+8,"esp",$num,4));	# +=tp[num+1]
-	&mov	(&DWP($frame,"esp",$num,4),"edx");	# tp[num-1]=
-	&cmp	($j,$num);
-	&mov	(&DWP($frame+4,"esp",$num,4),"eax");	# tp[num]=
-	&je	(&label("common_tail"));
-
-	&mov	($word,&DWP(4,$inp,$j,4));		# ap[i]
-	&lea	($j,&DWP(1,$j));
-	&mov	("eax",$word);
-	&mov	($_bp,$j);				# ++i
-	&mul	($word);				# ap[i]*ap[i]
-	&add	("eax",&DWP($frame,"esp",$j,4));	# +=tp[i]
-	&adc	("edx",0);
-	&mov	(&DWP($frame,"esp",$j,4),"eax");	# tp[i]=
-	&xor	($carry,$carry);
-	&cmp	($j,$num);
-	&lea	($j,&DWP(1,$j));
-	&je	(&label("sqrlast"));
-
-	&mov	($sbit,"edx");				# zaps $num
-	&shr	("edx",1);
-	&and	($sbit,1);
-&set_label("sqradd",16);
-	&mov	("eax",&DWP(0,$inp,$j,4));		# ap[j]
-	&mov	($carry,"edx");
-	&mul	($word);				# ap[j]*ap[i]
-	&add	("eax",$carry);
-	&lea	($carry,&DWP(0,"eax","eax"));
-	&adc	("edx",0);
-	&shr	("eax",31);
-	&add	($carry,&DWP($frame,"esp",$j,4));	# +=tp[j]
-	&lea	($j,&DWP(1,$j));
-	&adc	("eax",0);
-	&add	($carry,$sbit);
-	&adc	("eax",0);
-	&cmp	($j,$_num);
-	&mov	(&DWP($frame-4,"esp",$j,4),$carry);	# tp[j]=
-	&mov	($sbit,"eax");
-	&jle	(&label("sqradd"));
-
-	&mov	($carry,"edx");
-	&lea	("edx",&DWP(0,$sbit,"edx",2));
-	&shr	($carry,31);
-&set_label("sqrlast");
-	&mov	($word,$_n0);
-	&mov	($inp,$_np);
-	&imul	($word,&DWP($frame,"esp"));		# n0*tp[0]
-
-	&add	("edx",&DWP($frame,"esp",$j,4));	# +=tp[num]
-	&mov	("eax",&DWP(0,$inp));			# np[0]
-	&adc	($carry,0);
-	&mov	(&DWP($frame,"esp",$j,4),"edx");	# tp[num]=
-	&mov	(&DWP($frame+4,"esp",$j,4),$carry);	# tp[num+1]=
-
-	&mul	($word);				# np[0]*m
-	&add	("eax",&DWP($frame,"esp"));		# +=tp[0]
-	&lea	($num,&DWP(-1,$j));
-	&adc	("edx",0);
-	&mov	($j,1);
-	&mov	("eax",&DWP(4,$inp));			# np[1]
-
-	&jmp	(&label("3rdmadd"));
-}
-
-&set_label("common_tail",16);
-	&mov	($np,$_np);			# load modulus pointer
-	&mov	($rp,$_rp);			# load result pointer
-	&lea	($tp,&DWP($frame,"esp"));	# [$ap and $bp are zapped]
-
-	&mov	("eax",&DWP(0,$tp));		# tp[0]
-	&mov	($j,$num);			# j=num-1
-	&xor	($i,$i);			# i=0 and clear CF!
-
-&set_label("sub",16);
-	&sbb	("eax",&DWP(0,$np,$i,4));
-	&mov	(&DWP(0,$rp,$i,4),"eax");	# rp[i]=tp[i]-np[i]
-	&dec	($j);				# doesn't affect CF!
-	&mov	("eax",&DWP(4,$tp,$i,4));	# tp[i+1]
-	&lea	($i,&DWP(1,$i));		# i++
-	&jge	(&label("sub"));
-
-	&sbb	("eax",0);			# handle upmost overflow bit
-	&and	($tp,"eax");
-	&not	("eax");
-	&mov	($np,$rp);
-	&and	($np,"eax");
-	&or	($tp,$np);			# tp=carry?tp:rp
-
-&set_label("copy",16);				# copy or in-place refresh
-	&mov	("eax",&DWP(0,$tp,$num,4));
-	&mov	(&DWP(0,$rp,$num,4),"eax");	# rp[i]=tp[i]
-	&mov	(&DWP($frame,"esp",$num,4),$j);	# zap temporary vector
-	&dec	($num);
-	&jge	(&label("copy"));
-
-	&mov	("esp",$_sp);		# pull saved stack pointer
-	&mov	("eax",1);
-&set_label("just_leave");
-&function_end("bn_mul_mont");
-
-&asciz("Montgomery Multiplication for x86, CRYPTOGAMS by <appro\@openssl.org>");
-
-&asm_finish();