From a9cf0b81fae785f3917b62ea2039845b9504558f Mon Sep 17 00:00:00 2001
From: Andy Polyakov <appro@openssl.org>
Date: Wed, 19 Oct 2011 21:42:21 +0000
Subject: [PATCH] Remove superseded MIPS assembler modules.

---
 crypto/bn/asm/mips3-mont.pl |  327 ------
 crypto/bn/asm/mips3.s       | 2201 -----------------------------------
 2 files changed, 2528 deletions(-)
 delete mode 100644 crypto/bn/asm/mips3-mont.pl
 delete mode 100644 crypto/bn/asm/mips3.s

diff --git a/crypto/bn/asm/mips3-mont.pl b/crypto/bn/asm/mips3-mont.pl
deleted file mode 100644
index 8f9156e02a..0000000000
--- a/crypto/bn/asm/mips3-mont.pl
+++ /dev/null
@@ -1,327 +0,0 @@
-#!/usr/bin/env perl
-#
-# ====================================================================
-# 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/.
-# ====================================================================
-
-# This module doesn't present direct interest for OpenSSL, because it
-# doesn't provide better performance for longer keys. While 512-bit
-# RSA private key operations are 40% faster, 1024-bit ones are hardly
-# faster at all, while longer key operations are slower by up to 20%.
-# It might be of interest to embedded system developers though, as
-# it's smaller than 1KB, yet offers ~3x improvement over compiler
-# generated code.
-#
-# The module targets N32 and N64 MIPS ABIs and currently is a bit
-# IRIX-centric, i.e. is likely to require adaptation for other OSes.
-
-# int bn_mul_mont(
-$rp="a0";	# BN_ULONG *rp,
-$ap="a1";	# const BN_ULONG *ap,
-$bp="a2";	# const BN_ULONG *bp,
-$np="a3";	# const BN_ULONG *np,
-$n0="a4";	# const BN_ULONG *n0,
-$num="a5";	# int num);
-
-$lo0="a6";
-$hi0="a7";
-$lo1="v0";
-$hi1="v1";
-$aj="t0";
-$bi="t1";
-$nj="t2";
-$tp="t3";
-$alo="s0";
-$ahi="s1";
-$nlo="s2";
-$nhi="s3";
-$tj="s4";
-$i="s5";
-$j="s6";
-$fp="t8";
-$m1="t9";
-
-$FRAME=8*(2+8);
-
-$code=<<___;
-#include <asm.h>
-#include <regdef.h>
-
-.text
-
-.set	noat
-.set	reorder
-
-.align	5
-.globl	bn_mul_mont
-.ent	bn_mul_mont
-bn_mul_mont:
-	.set	noreorder
-	PTR_SUB	sp,64
-	move	$fp,sp
-	.frame	$fp,64,ra
-	slt	AT,$num,4
-	li	v0,0
-	beqzl	AT,.Lproceed
-	nop
-	jr	ra
-	PTR_ADD	sp,$fp,64
-	.set	reorder
-.align	5
-.Lproceed:
-	ld	$n0,0($n0)
-	ld	$bi,0($bp)	# bp[0]
-	ld	$aj,0($ap)	# ap[0]
-	ld	$nj,0($np)	# np[0]
-	PTR_SUB	sp,16		# place for two extra words
-	sll	$num,3
-	li	AT,-4096
-	PTR_SUB	sp,$num
-	and	sp,AT
-
-	sd	s0,0($fp)
-	sd	s1,8($fp)
-	sd	s2,16($fp)
-	sd	s3,24($fp)
-	sd	s4,32($fp)
-	sd	s5,40($fp)
-	sd	s6,48($fp)
-	sd	s7,56($fp)
-
-	dmultu	$aj,$bi
-	ld	$alo,8($ap)
-	ld	$nlo,8($np)
-	mflo	$lo0
-	mfhi	$hi0
-	dmultu	$lo0,$n0
-	mflo	$m1
-
-	dmultu	$alo,$bi
-	mflo	$alo
-	mfhi	$ahi
-
-	dmultu	$nj,$m1
-	mflo	$lo1
-	mfhi	$hi1
-	dmultu	$nlo,$m1
-	daddu	$lo1,$lo0
-	sltu	AT,$lo1,$lo0
-	daddu	$hi1,AT
-	mflo	$nlo
-	mfhi	$nhi
-
-	move	$tp,sp
-	li	$j,16
-.align	4
-.L1st:
-	.set	noreorder
-	PTR_ADD	$aj,$ap,$j
-	ld	$aj,($aj)
-	PTR_ADD	$nj,$np,$j
-	ld	$nj,($nj)
-
-	dmultu	$aj,$bi
-	daddu	$lo0,$alo,$hi0
-	daddu	$lo1,$nlo,$hi1
-	sltu	AT,$lo0,$hi0
-	sltu	s7,$lo1,$hi1
-	daddu	$hi0,$ahi,AT
-	daddu	$hi1,$nhi,s7
-	mflo	$alo
-	mfhi	$ahi
-
-	daddu	$lo1,$lo0
-	sltu	AT,$lo1,$lo0
-	dmultu	$nj,$m1
-	daddu	$hi1,AT
-	addu	$j,8
-	sd	$lo1,($tp)
-	sltu	s7,$j,$num
-	mflo	$nlo
-	mfhi	$nhi
-
-	bnez	s7,.L1st
-	PTR_ADD	$tp,8
-	.set	reorder
-
-	daddu	$lo0,$alo,$hi0
-	sltu	AT,$lo0,$hi0
-	daddu	$hi0,$ahi,AT
-
-	daddu	$lo1,$nlo,$hi1
-	sltu	s7,$lo1,$hi1
-	daddu	$hi1,$nhi,s7
-	daddu	$lo1,$lo0
-	sltu	AT,$lo1,$lo0
-	daddu	$hi1,AT
-
-	sd	$lo1,($tp)
-
-	daddu	$hi1,$hi0
-	sltu	AT,$hi1,$hi0
-	sd	$hi1,8($tp)
-	sd	AT,16($tp)
-
-	li	$i,8
-.align	4
-.Louter:
-	PTR_ADD	$bi,$bp,$i
-	ld	$bi,($bi)
-	ld	$aj,($ap)
-	ld	$alo,8($ap)
-	ld	$tj,(sp)
-
-	dmultu	$aj,$bi
-	ld	$nj,($np)
-	ld	$nlo,8($np)
-	mflo	$lo0
-	mfhi	$hi0
-	daddu	$lo0,$tj
-	dmultu	$lo0,$n0
-	sltu	AT,$lo0,$tj
-	daddu	$hi0,AT
-	mflo	$m1
-
-	dmultu	$alo,$bi
-	mflo	$alo
-	mfhi	$ahi
-
-	dmultu	$nj,$m1
-	mflo	$lo1
-	mfhi	$hi1
-
-	dmultu	$nlo,$m1
-	daddu	$lo1,$lo0
-	sltu	AT,$lo1,$lo0
-	daddu	$hi1,AT
-	mflo	$nlo
-	mfhi	$nhi
-
-	move	$tp,sp
-	li	$j,16
-	ld	$tj,8($tp)
-.align	4
-.Linner:
-	.set	noreorder
-	PTR_ADD	$aj,$ap,$j
-	ld	$aj,($aj)
-	PTR_ADD	$nj,$np,$j
-	ld	$nj,($nj)
-
-	dmultu	$aj,$bi
-	daddu	$lo0,$alo,$hi0
-	daddu	$lo1,$nlo,$hi1
-	sltu	AT,$lo0,$hi0
-	sltu	s7,$lo1,$hi1
-	daddu	$hi0,$ahi,AT
-	daddu	$hi1,$nhi,s7
-	mflo	$alo
-	mfhi	$ahi
-
-	daddu	$lo0,$tj
-	addu	$j,8
-	dmultu	$nj,$m1
-	sltu	AT,$lo0,$tj
-	daddu	$lo1,$lo0
-	daddu	$hi0,AT
-	sltu	s7,$lo1,$lo0
-	ld	$tj,16($tp)
-	daddu	$hi1,s7
-	sltu	AT,$j,$num
-	mflo	$nlo
-	mfhi	$nhi
-	sd	$lo1,($tp)
-	bnez	AT,.Linner
-	PTR_ADD	$tp,8
-	.set	reorder
-
-	daddu	$lo0,$alo,$hi0
-	sltu	AT,$lo0,$hi0
-	daddu	$hi0,$ahi,AT
-	daddu	$lo0,$tj
-	sltu	s7,$lo0,$tj
-	daddu	$hi0,s7
-
-	ld	$tj,16($tp)
-	daddu	$lo1,$nlo,$hi1
-	sltu	AT,$lo1,$hi1
-	daddu	$hi1,$nhi,AT
-	daddu	$lo1,$lo0
-	sltu	s7,$lo1,$lo0
-	daddu	$hi1,s7
-	sd	$lo1,($tp)
-
-	daddu	$lo1,$hi1,$hi0
-	sltu	$hi1,$lo1,$hi0
-	daddu	$lo1,$tj
-	sltu	AT,$lo1,$tj
-	daddu	$hi1,AT
-	sd	$lo1,8($tp)
-	sd	$hi1,16($tp)
-
-	addu	$i,8
-	sltu	s7,$i,$num
-	bnez	s7,.Louter
-
-	.set	noreorder
-	PTR_ADD	$tj,sp,$num	# &tp[num]
-	move	$tp,sp
-	move	$ap,sp
-	li	$hi0,0		# clear borrow bit
-
-.align	4
-.Lsub:	ld	$lo0,($tp)
-	ld	$lo1,($np)
-	PTR_ADD	$tp,8
-	PTR_ADD	$np,8
-	dsubu	$lo1,$lo0,$lo1	# tp[i]-np[i]
-	sgtu	AT,$lo1,$lo0
-	dsubu	$lo0,$lo1,$hi0
-	sgtu	$hi0,$lo0,$lo1
-	sd	$lo0,($rp)
-	or	$hi0,AT
-	sltu	AT,$tp,$tj
-	bnez	AT,.Lsub
-	PTR_ADD	$rp,8
-
-	dsubu	$hi0,$hi1,$hi0	# handle upmost overflow bit
-	move	$tp,sp
-	PTR_SUB	$rp,$num	# restore rp
-	not	$hi1,$hi0
-
-	and	$ap,$hi0,sp
-	and	$bp,$hi1,$rp
-	or	$ap,$ap,$bp	# ap=borrow?tp:rp
-
-.align	4
-.Lcopy:	ld	$aj,($ap)
-	PTR_ADD	$ap,8
-	PTR_ADD	$tp,8
-	sd	zero,-8($tp)
-	sltu	AT,$tp,$tj
-	sd	$aj,($rp)
-	bnez	AT,.Lcopy
-	PTR_ADD	$rp,8
-
-	ld	s0,0($fp)
-	ld	s1,8($fp)
-	ld	s2,16($fp)
-	ld	s3,24($fp)
-	ld	s4,32($fp)
-	ld	s5,40($fp)
-	ld	s6,48($fp)
-	ld	s7,56($fp)
-	li	v0,1
-	jr	ra
-	PTR_ADD	sp,$fp,64
-	.set	reorder
-END(bn_mul_mont)
-.rdata
-.asciiz	"Montgomery Multiplication for MIPS III/IV, CRYPTOGAMS by <appro\@openssl.org>"
-___
-
-print $code;
-close STDOUT;
diff --git a/crypto/bn/asm/mips3.s b/crypto/bn/asm/mips3.s
deleted file mode 100644
index dca4105c7d..0000000000
--- a/crypto/bn/asm/mips3.s
+++ /dev/null
@@ -1,2201 +0,0 @@
-.rdata
-.asciiz	"mips3.s, Version 1.1"
-.asciiz	"MIPS III/IV ISA artwork by Andy Polyakov <appro@fy.chalmers.se>"
-
-/*
- * ====================================================================
- * Written by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL
- * project.
- *
- * Rights for redistribution and usage in source and binary forms are
- * granted according to the OpenSSL license. Warranty of any kind is
- * disclaimed.
- * ====================================================================
- */
-
-/*
- * This is my modest contributon to the OpenSSL project (see
- * http://www.openssl.org/ for more information about it) and is
- * a drop-in MIPS III/IV ISA replacement for crypto/bn/bn_asm.c
- * module. For updates see http://fy.chalmers.se/~appro/hpe/.
- *
- * The module is designed to work with either of the "new" MIPS ABI(5),
- * namely N32 or N64, offered by IRIX 6.x. It's not ment to work under
- * IRIX 5.x not only because it doesn't support new ABIs but also
- * because 5.x kernels put R4x00 CPU into 32-bit mode and all those
- * 64-bit instructions (daddu, dmultu, etc.) found below gonna only
- * cause illegal instruction exception:-(
- *
- * In addition the code depends on preprocessor flags set up by MIPSpro
- * compiler driver (either as or cc) and therefore (probably?) can't be
- * compiled by the GNU assembler. GNU C driver manages fine though...
- * I mean as long as -mmips-as is specified or is the default option,
- * because then it simply invokes /usr/bin/as which in turn takes
- * perfect care of the preprocessor definitions. Another neat feature
- * offered by the MIPSpro assembler is an optimization pass. This gave
- * me the opportunity to have the code looking more regular as all those
- * architecture dependent instruction rescheduling details were left to
- * the assembler. Cool, huh?
- *
- * Performance improvement is astonishing! 'apps/openssl speed rsa dsa'
- * goes way over 3 times faster!
- *
- *					<appro@fy.chalmers.se>
- */
-#include <asm.h>
-#include <regdef.h>
-
-#if _MIPS_ISA>=4
-#define	MOVNZ(cond,dst,src)	\
-	movn	dst,src,cond
-#else
-#define	MOVNZ(cond,dst,src)	\
-	.set	noreorder;	\
-	bnezl	cond,.+8;	\
-	move	dst,src;	\
-	.set	reorder
-#endif
-
-.text
-
-.set	noat
-.set	reorder
-
-#define	MINUS4	v1
-
-.align	5
-LEAF(bn_mul_add_words)
-	.set	noreorder
-	bgtzl	a2,.L_bn_mul_add_words_proceed
-	ld	t0,0(a1)
-	jr	ra
-	move	v0,zero
-	.set	reorder
-
-.L_bn_mul_add_words_proceed:
-	li	MINUS4,-4
-	and	ta0,a2,MINUS4
-	move	v0,zero
-	beqz	ta0,.L_bn_mul_add_words_tail
-
-.L_bn_mul_add_words_loop:
-	dmultu	t0,a3
-	ld	t1,0(a0)
-	ld	t2,8(a1)
-	ld	t3,8(a0)
-	ld	ta0,16(a1)
-	ld	ta1,16(a0)
-	daddu	t1,v0
-	sltu	v0,t1,v0	/* All manuals say it "compares 32-bit
-				 * values", but it seems to work fine
-				 * even on 64-bit registers. */
-	mflo	AT
-	mfhi	t0
-	daddu	t1,AT
-	daddu	v0,t0
-	sltu	AT,t1,AT
-	sd	t1,0(a0)
-	daddu	v0,AT
-
-	dmultu	t2,a3
-	ld	ta2,24(a1)
-	ld	ta3,24(a0)
-	daddu	t3,v0
-	sltu	v0,t3,v0
-	mflo	AT
-	mfhi	t2
-	daddu	t3,AT
-	daddu	v0,t2
-	sltu	AT,t3,AT
-	sd	t3,8(a0)
-	daddu	v0,AT
-
-	dmultu	ta0,a3
-	subu	a2,4
-	PTR_ADD	a0,32
-	PTR_ADD	a1,32
-	daddu	ta1,v0
-	sltu	v0,ta1,v0
-	mflo	AT
-	mfhi	ta0
-	daddu	ta1,AT
-	daddu	v0,ta0
-	sltu	AT,ta1,AT
-	sd	ta1,-16(a0)
-	daddu	v0,AT
-
-
-	dmultu	ta2,a3
-	and	ta0,a2,MINUS4
-	daddu	ta3,v0
-	sltu	v0,ta3,v0
-	mflo	AT
-	mfhi	ta2
-	daddu	ta3,AT
-	daddu	v0,ta2
-	sltu	AT,ta3,AT
-	sd	ta3,-8(a0)
-	daddu	v0,AT
-	.set	noreorder
-	bgtzl	ta0,.L_bn_mul_add_words_loop
-	ld	t0,0(a1)
-
-	bnezl	a2,.L_bn_mul_add_words_tail
-	ld	t0,0(a1)
-	.set	reorder
-
-.L_bn_mul_add_words_return:
-	jr	ra
-
-.L_bn_mul_add_words_tail:
-	dmultu	t0,a3
-	ld	t1,0(a0)
-	subu	a2,1
-	daddu	t1,v0
-	sltu	v0,t1,v0
-	mflo	AT
-	mfhi	t0
-	daddu	t1,AT
-	daddu	v0,t0
-	sltu	AT,t1,AT
-	sd	t1,0(a0)
-	daddu	v0,AT
-	beqz	a2,.L_bn_mul_add_words_return
-
-	ld	t0,8(a1)
-	dmultu	t0,a3
-	ld	t1,8(a0)
-	subu	a2,1
-	daddu	t1,v0
-	sltu	v0,t1,v0
-	mflo	AT
-	mfhi	t0
-	daddu	t1,AT
-	daddu	v0,t0
-	sltu	AT,t1,AT
-	sd	t1,8(a0)
-	daddu	v0,AT
-	beqz	a2,.L_bn_mul_add_words_return
-
-	ld	t0,16(a1)
-	dmultu	t0,a3
-	ld	t1,16(a0)
-	daddu	t1,v0
-	sltu	v0,t1,v0
-	mflo	AT
-	mfhi	t0
-	daddu	t1,AT
-	daddu	v0,t0
-	sltu	AT,t1,AT
-	sd	t1,16(a0)
-	daddu	v0,AT
-	jr	ra
-END(bn_mul_add_words)
-
-.align	5
-LEAF(bn_mul_words)
-	.set	noreorder
-	bgtzl	a2,.L_bn_mul_words_proceed
-	ld	t0,0(a1)
-	jr	ra
-	move	v0,zero
-	.set	reorder
-
-.L_bn_mul_words_proceed:
-	li	MINUS4,-4
-	and	ta0,a2,MINUS4
-	move	v0,zero
-	beqz	ta0,.L_bn_mul_words_tail
-
-.L_bn_mul_words_loop:
-	dmultu	t0,a3
-	ld	t2,8(a1)
-	ld	ta0,16(a1)
-	ld	ta2,24(a1)
-	mflo	AT
-	mfhi	t0
-	daddu	v0,AT
-	sltu	t1,v0,AT
-	sd	v0,0(a0)
-	daddu	v0,t1,t0
-
-	dmultu	t2,a3
-	subu	a2,4
-	PTR_ADD	a0,32
-	PTR_ADD	a1,32
-	mflo	AT
-	mfhi	t2
-	daddu	v0,AT
-	sltu	t3,v0,AT
-	sd	v0,-24(a0)
-	daddu	v0,t3,t2
-
-	dmultu	ta0,a3
-	mflo	AT
-	mfhi	ta0
-	daddu	v0,AT
-	sltu	ta1,v0,AT
-	sd	v0,-16(a0)
-	daddu	v0,ta1,ta0
-
-
-	dmultu	ta2,a3
-	and	ta0,a2,MINUS4
-	mflo	AT
-	mfhi	ta2
-	daddu	v0,AT
-	sltu	ta3,v0,AT
-	sd	v0,-8(a0)
-	daddu	v0,ta3,ta2
-	.set	noreorder
-	bgtzl	ta0,.L_bn_mul_words_loop
-	ld	t0,0(a1)
-
-	bnezl	a2,.L_bn_mul_words_tail
-	ld	t0,0(a1)
-	.set	reorder
-
-.L_bn_mul_words_return:
-	jr	ra
-
-.L_bn_mul_words_tail:
-	dmultu	t0,a3
-	subu	a2,1
-	mflo	AT
-	mfhi	t0
-	daddu	v0,AT
-	sltu	t1,v0,AT
-	sd	v0,0(a0)
-	daddu	v0,t1,t0
-	beqz	a2,.L_bn_mul_words_return
-
-	ld	t0,8(a1)
-	dmultu	t0,a3
-	subu	a2,1
-	mflo	AT
-	mfhi	t0
-	daddu	v0,AT
-	sltu	t1,v0,AT
-	sd	v0,8(a0)
-	daddu	v0,t1,t0
-	beqz	a2,.L_bn_mul_words_return
-
-	ld	t0,16(a1)
-	dmultu	t0,a3
-	mflo	AT
-	mfhi	t0
-	daddu	v0,AT
-	sltu	t1,v0,AT
-	sd	v0,16(a0)
-	daddu	v0,t1,t0
-	jr	ra
-END(bn_mul_words)
-
-.align	5
-LEAF(bn_sqr_words)
-	.set	noreorder
-	bgtzl	a2,.L_bn_sqr_words_proceed
-	ld	t0,0(a1)
-	jr	ra
-	move	v0,zero
-	.set	reorder
-
-.L_bn_sqr_words_proceed:
-	li	MINUS4,-4
-	and	ta0,a2,MINUS4
-	move	v0,zero
-	beqz	ta0,.L_bn_sqr_words_tail
-
-.L_bn_sqr_words_loop:
-	dmultu	t0,t0
-	ld	t2,8(a1)
-	ld	ta0,16(a1)
-	ld	ta2,24(a1)
-	mflo	t1
-	mfhi	t0
-	sd	t1,0(a0)
-	sd	t0,8(a0)
-
-	dmultu	t2,t2
-	subu	a2,4
-	PTR_ADD	a0,64
-	PTR_ADD	a1,32
-	mflo	t3
-	mfhi	t2
-	sd	t3,-48(a0)
-	sd	t2,-40(a0)
-
-	dmultu	ta0,ta0
-	mflo	ta1
-	mfhi	ta0
-	sd	ta1,-32(a0)
-	sd	ta0,-24(a0)
-
-
-	dmultu	ta2,ta2
-	and	ta0,a2,MINUS4
-	mflo	ta3
-	mfhi	ta2
-	sd	ta3,-16(a0)
-	sd	ta2,-8(a0)
-
-	.set	noreorder
-	bgtzl	ta0,.L_bn_sqr_words_loop
-	ld	t0,0(a1)
-
-	bnezl	a2,.L_bn_sqr_words_tail
-	ld	t0,0(a1)
-	.set	reorder
-
-.L_bn_sqr_words_return:
-	move	v0,zero
-	jr	ra
-
-.L_bn_sqr_words_tail:
-	dmultu	t0,t0
-	subu	a2,1
-	mflo	t1
-	mfhi	t0
-	sd	t1,0(a0)
-	sd	t0,8(a0)
-	beqz	a2,.L_bn_sqr_words_return
-
-	ld	t0,8(a1)
-	dmultu	t0,t0
-	subu	a2,1
-	mflo	t1
-	mfhi	t0
-	sd	t1,16(a0)
-	sd	t0,24(a0)
-	beqz	a2,.L_bn_sqr_words_return
-
-	ld	t0,16(a1)
-	dmultu	t0,t0
-	mflo	t1
-	mfhi	t0
-	sd	t1,32(a0)
-	sd	t0,40(a0)
-	jr	ra
-END(bn_sqr_words)
-
-.align	5
-LEAF(bn_add_words)
-	.set	noreorder
-	bgtzl	a3,.L_bn_add_words_proceed
-	ld	t0,0(a1)
-	jr	ra
-	move	v0,zero
-	.set	reorder
-
-.L_bn_add_words_proceed:
-	li	MINUS4,-4
-	and	AT,a3,MINUS4
-	move	v0,zero
-	beqz	AT,.L_bn_add_words_tail
-
-.L_bn_add_words_loop:
-	ld	ta0,0(a2)
-	subu	a3,4
-	ld	t1,8(a1)
-	and	AT,a3,MINUS4
-	ld	t2,16(a1)
-	PTR_ADD	a2,32
-	ld	t3,24(a1)
-	PTR_ADD	a0,32
-	ld	ta1,-24(a2)
-	PTR_ADD	a1,32
-	ld	ta2,-16(a2)
-	ld	ta3,-8(a2)
-	daddu	ta0,t0
-	sltu	t8,ta0,t0
-	daddu	t0,ta0,v0
-	sltu	v0,t0,ta0
-	sd	t0,-32(a0)
-	daddu	v0,t8
-
-	daddu	ta1,t1
-	sltu	t9,ta1,t1
-	daddu	t1,ta1,v0
-	sltu	v0,t1,ta1
-	sd	t1,-24(a0)
-	daddu	v0,t9
-
-	daddu	ta2,t2
-	sltu	t8,ta2,t2
-	daddu	t2,ta2,v0
-	sltu	v0,t2,ta2
-	sd	t2,-16(a0)
-	daddu	v0,t8
-	
-	daddu	ta3,t3
-	sltu	t9,ta3,t3
-	daddu	t3,ta3,v0
-	sltu	v0,t3,ta3
-	sd	t3,-8(a0)
-	daddu	v0,t9
-	
-	.set	noreorder
-	bgtzl	AT,.L_bn_add_words_loop
-	ld	t0,0(a1)
-
-	bnezl	a3,.L_bn_add_words_tail
-	ld	t0,0(a1)
-	.set	reorder
-
-.L_bn_add_words_return:
-	jr	ra
-
-.L_bn_add_words_tail:
-	ld	ta0,0(a2)
-	daddu	ta0,t0
-	subu	a3,1
-	sltu	t8,ta0,t0
-	daddu	t0,ta0,v0
-	sltu	v0,t0,ta0
-	sd	t0,0(a0)
-	daddu	v0,t8
-	beqz	a3,.L_bn_add_words_return
-
-	ld	t1,8(a1)
-	ld	ta1,8(a2)
-	daddu	ta1,t1
-	subu	a3,1
-	sltu	t9,ta1,t1
-	daddu	t1,ta1,v0
-	sltu	v0,t1,ta1
-	sd	t1,8(a0)
-	daddu	v0,t9
-	beqz	a3,.L_bn_add_words_return
-
-	ld	t2,16(a1)
-	ld	ta2,16(a2)
-	daddu	ta2,t2
-	sltu	t8,ta2,t2
-	daddu	t2,ta2,v0
-	sltu	v0,t2,ta2
-	sd	t2,16(a0)
-	daddu	v0,t8
-	jr	ra
-END(bn_add_words)
-
-.align	5
-LEAF(bn_sub_words)
-	.set	noreorder
-	bgtzl	a3,.L_bn_sub_words_proceed
-	ld	t0,0(a1)
-	jr	ra
-	move	v0,zero
-	.set	reorder
-
-.L_bn_sub_words_proceed:
-	li	MINUS4,-4
-	and	AT,a3,MINUS4
-	move	v0,zero
-	beqz	AT,.L_bn_sub_words_tail
-
-.L_bn_sub_words_loop:
-	ld	ta0,0(a2)
-	subu	a3,4
-	ld	t1,8(a1)
-	and	AT,a3,MINUS4
-	ld	t2,16(a1)
-	PTR_ADD	a2,32
-	ld	t3,24(a1)
-	PTR_ADD	a0,32
-	ld	ta1,-24(a2)
-	PTR_ADD	a1,32
-	ld	ta2,-16(a2)
-	ld	ta3,-8(a2)
-	sltu	t8,t0,ta0
-	dsubu	t0,ta0
-	dsubu	ta0,t0,v0
-	sd	ta0,-32(a0)
-	MOVNZ	(t0,v0,t8)
-
-	sltu	t9,t1,ta1
-	dsubu	t1,ta1
-	dsubu	ta1,t1,v0
-	sd	ta1,-24(a0)
-	MOVNZ	(t1,v0,t9)
-
-
-	sltu	t8,t2,ta2
-	dsubu	t2,ta2
-	dsubu	ta2,t2,v0
-	sd	ta2,-16(a0)
-	MOVNZ	(t2,v0,t8)
-
-	sltu	t9,t3,ta3
-	dsubu	t3,ta3
-	dsubu	ta3,t3,v0
-	sd	ta3,-8(a0)
-	MOVNZ	(t3,v0,t9)
-
-	.set	noreorder
-	bgtzl	AT,.L_bn_sub_words_loop
-	ld	t0,0(a1)
-
-	bnezl	a3,.L_bn_sub_words_tail
-	ld	t0,0(a1)
-	.set	reorder
-
-.L_bn_sub_words_return:
-	jr	ra
-
-.L_bn_sub_words_tail:
-	ld	ta0,0(a2)
-	subu	a3,1
-	sltu	t8,t0,ta0
-	dsubu	t0,ta0
-	dsubu	ta0,t0,v0
-	MOVNZ	(t0,v0,t8)
-	sd	ta0,0(a0)
-	beqz	a3,.L_bn_sub_words_return
-
-	ld	t1,8(a1)
-	subu	a3,1
-	ld	ta1,8(a2)
-	sltu	t9,t1,ta1
-	dsubu	t1,ta1
-	dsubu	ta1,t1,v0
-	MOVNZ	(t1,v0,t9)
-	sd	ta1,8(a0)
-	beqz	a3,.L_bn_sub_words_return
-
-	ld	t2,16(a1)
-	ld	ta2,16(a2)
-	sltu	t8,t2,ta2
-	dsubu	t2,ta2
-	dsubu	ta2,t2,v0
-	MOVNZ	(t2,v0,t8)
-	sd	ta2,16(a0)
-	jr	ra
-END(bn_sub_words)
-
-#undef	MINUS4
-
-.align 5
-LEAF(bn_div_3_words)
-	.set	reorder
-	move	a3,a0		/* we know that bn_div_words doesn't
-				 * touch a3, ta2, ta3 and preserves a2
-				 * so that we can save two arguments
-				 * and return address in registers
-				 * instead of stack:-)
-				 */
-	ld	a0,(a3)
-	move	ta2,a1
-	ld	a1,-8(a3)
-	bne	a0,a2,.L_bn_div_3_words_proceed
-	li	v0,-1
-	jr	ra
-.L_bn_div_3_words_proceed:
-	move	ta3,ra
-	bal	bn_div_words
-	move	ra,ta3
-	dmultu	ta2,v0
-	ld	t2,-16(a3)
-	move	ta0,zero
-	mfhi	t1
-	mflo	t0
-	sltu	t8,t1,v1
-.L_bn_div_3_words_inner_loop:
-	bnez	t8,.L_bn_div_3_words_inner_loop_done
-	sgeu	AT,t2,t0
-	seq	t9,t1,v1
-	and	AT,t9
-	sltu	t3,t0,ta2
-	daddu	v1,a2
-	dsubu	t1,t3
-	dsubu	t0,ta2
-	sltu	t8,t1,v1
-	sltu	ta0,v1,a2
-	or	t8,ta0
-	.set	noreorder
-	beqzl	AT,.L_bn_div_3_words_inner_loop
-	dsubu	v0,1
-	.set	reorder
-.L_bn_div_3_words_inner_loop_done:
-	jr	ra
-END(bn_div_3_words)
-
-.align	5
-LEAF(bn_div_words)
-	.set	noreorder
-	bnezl	a2,.L_bn_div_words_proceed
-	move	v1,zero
-	jr	ra
-	li	v0,-1		/* I'd rather signal div-by-zero
-				 * which can be done with 'break 7' */
-
-.L_bn_div_words_proceed:
-	bltz	a2,.L_bn_div_words_body
-	move	t9,v1
-	dsll	a2,1
-	bgtz	a2,.-4
-	addu	t9,1
-
-	.set	reorder
-	negu	t1,t9
-	li	t2,-1
-	dsll	t2,t1
-	and	t2,a0
-	dsrl	AT,a1,t1
-	.set	noreorder
-	bnezl	t2,.+8
-	break	6		/* signal overflow */
-	.set	reorder
-	dsll	a0,t9
-	dsll	a1,t9
-	or	a0,AT
-
-#define	QT	ta0
-#define	HH	ta1
-#define	DH	v1
-.L_bn_div_words_body:
-	dsrl	DH,a2,32
-	sgeu	AT,a0,a2
-	.set	noreorder
-	bnezl	AT,.+8
-	dsubu	a0,a2
-	.set	reorder
-
-	li	QT,-1
-	dsrl	HH,a0,32
-	dsrl	QT,32	/* q=0xffffffff */
-	beq	DH,HH,.L_bn_div_words_skip_div1
-	ddivu	zero,a0,DH
-	mflo	QT
-.L_bn_div_words_skip_div1:
-	dmultu	a2,QT
-	dsll	t3,a0,32
-	dsrl	AT,a1,32
-	or	t3,AT
-	mflo	t0
-	mfhi	t1
-.L_bn_div_words_inner_loop1:
-	sltu	t2,t3,t0
-	seq	t8,HH,t1
-	sltu	AT,HH,t1
-	and	t2,t8
-	sltu	v0,t0,a2
-	or	AT,t2
-	.set	noreorder
-	beqz	AT,.L_bn_div_words_inner_loop1_done
-	dsubu	t1,v0
-	dsubu	t0,a2
-	b	.L_bn_div_words_inner_loop1
-	dsubu	QT,1
-	.set	reorder
-.L_bn_div_words_inner_loop1_done:
-
-	dsll	a1,32
-	dsubu	a0,t3,t0
-	dsll	v0,QT,32
-
-	li	QT,-1
-	dsrl	HH,a0,32
-	dsrl	QT,32	/* q=0xffffffff */
-	beq	DH,HH,.L_bn_div_words_skip_div2
-	ddivu	zero,a0,DH
-	mflo	QT
-.L_bn_div_words_skip_div2:
-#undef	DH
-	dmultu	a2,QT
-	dsll	t3,a0,32
-	dsrl	AT,a1,32
-	or	t3,AT
-	mflo	t0
-	mfhi	t1
-.L_bn_div_words_inner_loop2:
-	sltu	t2,t3,t0
-	seq	t8,HH,t1
-	sltu	AT,HH,t1
-	and	t2,t8
-	sltu	v1,t0,a2
-	or	AT,t2
-	.set	noreorder
-	beqz	AT,.L_bn_div_words_inner_loop2_done
-	dsubu	t1,v1
-	dsubu	t0,a2
-	b	.L_bn_div_words_inner_loop2
-	dsubu	QT,1
-	.set	reorder
-.L_bn_div_words_inner_loop2_done:	
-#undef	HH
-
-	dsubu	a0,t3,t0
-	or	v0,QT
-	dsrl	v1,a0,t9	/* v1 contains remainder if anybody wants it */
-	dsrl	a2,t9		/* restore a2 */
-	jr	ra
-#undef	QT
-END(bn_div_words)
-
-#define	a_0	t0
-#define	a_1	t1
-#define	a_2	t2
-#define	a_3	t3
-#define	b_0	ta0
-#define	b_1	ta1
-#define	b_2	ta2
-#define	b_3	ta3
-
-#define	a_4	s0
-#define	a_5	s2
-#define	a_6	s4
-#define	a_7	a1	/* once we load a[7] we don't need a anymore */
-#define	b_4	s1
-#define	b_5	s3
-#define	b_6	s5
-#define	b_7	a2	/* once we load b[7] we don't need b anymore */
-
-#define	t_1	t8
-#define	t_2	t9
-
-#define	c_1	v0
-#define	c_2	v1
-#define	c_3	a3
-
-#define	FRAME_SIZE	48
-
-.align	5
-LEAF(bn_mul_comba8)
-	.set	noreorder
-	PTR_SUB	sp,FRAME_SIZE
-	.frame	sp,64,ra
-	.set	reorder
-	ld	a_0,0(a1)	/* If compiled with -mips3 option on
-				 * R5000 box assembler barks on this
-				 * line with "shouldn't have mult/div
-				 * as last instruction in bb (R10K
-				 * bug)" warning. If anybody out there
-				 * has a clue about how to circumvent
-				 * this do send me a note.
-				 *		<appro@fy.chalmers.se>
-				 */
-	ld	b_0,0(a2)
-	ld	a_1,8(a1)
-	ld	a_2,16(a1)
-	ld	a_3,24(a1)
-	ld	b_1,8(a2)
-	ld	b_2,16(a2)
-	ld	b_3,24(a2)
-	dmultu	a_0,b_0		/* mul_add_c(a[0],b[0],c1,c2,c3); */
-	sd	s0,0(sp)
-	sd	s1,8(sp)
-	sd	s2,16(sp)
-	sd	s3,24(sp)
-	sd	s4,32(sp)
-	sd	s5,40(sp)
-	mflo	c_1
-	mfhi	c_2
-
-	dmultu	a_0,b_1		/* mul_add_c(a[0],b[1],c2,c3,c1); */
-	ld	a_4,32(a1)
-	ld	a_5,40(a1)
-	ld	a_6,48(a1)
-	ld	a_7,56(a1)
-	ld	b_4,32(a2)
-	ld	b_5,40(a2)
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	c_3,t_2,AT
-	dmultu	a_1,b_0		/* mul_add_c(a[1],b[0],c2,c3,c1); */
-	ld	b_6,48(a2)
-	ld	b_7,56(a2)
-	sd	c_1,0(a0)	/* r[0]=c1; */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	c_1,c_3,t_2
-	sd	c_2,8(a0)	/* r[1]=c2; */
-
-	dmultu	a_2,b_0		/* mul_add_c(a[2],b[0],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	dmultu	a_1,b_1		/* mul_add_c(a[1],b[1],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	c_2,c_1,t_2
-	dmultu	a_0,b_2		/* mul_add_c(a[0],b[2],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	sd	c_3,16(a0)	/* r[2]=c3; */
-
-	dmultu	a_0,b_3		/* mul_add_c(a[0],b[3],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	c_3,c_2,t_2
-	dmultu	a_1,b_2		/* mul_add_c(a[1],b[2],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	dmultu	a_2,b_1		/* mul_add_c(a[2],b[1],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	dmultu	a_3,b_0		/* mul_add_c(a[3],b[0],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	sd	c_1,24(a0)	/* r[3]=c1; */
-
-	dmultu	a_4,b_0		/* mul_add_c(a[4],b[0],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	c_1,c_3,t_2
-	dmultu	a_3,b_1		/* mul_add_c(a[3],b[1],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	dmultu	a_2,b_2		/* mul_add_c(a[2],b[2],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	dmultu	a_1,b_3		/* mul_add_c(a[1],b[3],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	dmultu	a_0,b_4		/* mul_add_c(a[0],b[4],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	sd	c_2,32(a0)	/* r[4]=c2; */
-
-	dmultu	a_0,b_5		/* mul_add_c(a[0],b[5],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	c_2,c_1,t_2
-	dmultu	a_1,b_4		/* mul_add_c(a[1],b[4],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	dmultu	a_2,b_3		/* mul_add_c(a[2],b[3],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	dmultu	a_3,b_2		/* mul_add_c(a[3],b[2],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	dmultu	a_4,b_1		/* mul_add_c(a[4],b[1],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	dmultu	a_5,b_0		/* mul_add_c(a[5],b[0],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	sd	c_3,40(a0)	/* r[5]=c3; */
-
-	dmultu	a_6,b_0		/* mul_add_c(a[6],b[0],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	c_3,c_2,t_2
-	dmultu	a_5,b_1		/* mul_add_c(a[5],b[1],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	dmultu	a_4,b_2		/* mul_add_c(a[4],b[2],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	dmultu	a_3,b_3		/* mul_add_c(a[3],b[3],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	dmultu	a_2,b_4		/* mul_add_c(a[2],b[4],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	dmultu	a_1,b_5		/* mul_add_c(a[1],b[5],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	dmultu	a_0,b_6		/* mul_add_c(a[0],b[6],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	sd	c_1,48(a0)	/* r[6]=c1; */
-
-	dmultu	a_0,b_7		/* mul_add_c(a[0],b[7],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	c_1,c_3,t_2
-	dmultu	a_1,b_6		/* mul_add_c(a[1],b[6],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	dmultu	a_2,b_5		/* mul_add_c(a[2],b[5],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	dmultu	a_3,b_4		/* mul_add_c(a[3],b[4],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	dmultu	a_4,b_3		/* mul_add_c(a[4],b[3],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	dmultu	a_5,b_2		/* mul_add_c(a[5],b[2],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	dmultu	a_6,b_1		/* mul_add_c(a[6],b[1],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	dmultu	a_7,b_0		/* mul_add_c(a[7],b[0],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	sd	c_2,56(a0)	/* r[7]=c2; */
-
-	dmultu	a_7,b_1		/* mul_add_c(a[7],b[1],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	c_2,c_1,t_2
-	dmultu	a_6,b_2		/* mul_add_c(a[6],b[2],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	dmultu	a_5,b_3		/* mul_add_c(a[5],b[3],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	dmultu	a_4,b_4		/* mul_add_c(a[4],b[4],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	dmultu	a_3,b_5		/* mul_add_c(a[3],b[5],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	dmultu	a_2,b_6		/* mul_add_c(a[2],b[6],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	dmultu	a_1,b_7		/* mul_add_c(a[1],b[7],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	sd	c_3,64(a0)	/* r[8]=c3; */
-
-	dmultu	a_2,b_7		/* mul_add_c(a[2],b[7],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	c_3,c_2,t_2
-	dmultu	a_3,b_6		/* mul_add_c(a[3],b[6],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	dmultu	a_4,b_5		/* mul_add_c(a[4],b[5],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	dmultu	a_5,b_4		/* mul_add_c(a[5],b[4],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	dmultu	a_6,b_3		/* mul_add_c(a[6],b[3],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	dmultu	a_7,b_2		/* mul_add_c(a[7],b[2],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	sd	c_1,72(a0)	/* r[9]=c1; */
-
-	dmultu	a_7,b_3		/* mul_add_c(a[7],b[3],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	c_1,c_3,t_2
-	dmultu	a_6,b_4		/* mul_add_c(a[6],b[4],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	dmultu	a_5,b_5		/* mul_add_c(a[5],b[5],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	dmultu	a_4,b_6		/* mul_add_c(a[4],b[6],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	dmultu	a_3,b_7		/* mul_add_c(a[3],b[7],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	sd	c_2,80(a0)	/* r[10]=c2; */
-
-	dmultu	a_4,b_7		/* mul_add_c(a[4],b[7],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	c_2,c_1,t_2
-	dmultu	a_5,b_6		/* mul_add_c(a[5],b[6],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	dmultu	a_6,b_5		/* mul_add_c(a[6],b[5],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	dmultu	a_7,b_4		/* mul_add_c(a[7],b[4],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	sd	c_3,88(a0)	/* r[11]=c3; */
-
-	dmultu	a_7,b_5		/* mul_add_c(a[7],b[5],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	c_3,c_2,t_2
-	dmultu	a_6,b_6		/* mul_add_c(a[6],b[6],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	dmultu	a_5,b_7		/* mul_add_c(a[5],b[7],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	sd	c_1,96(a0)	/* r[12]=c1; */
-
-	dmultu	a_6,b_7		/* mul_add_c(a[6],b[7],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	c_1,c_3,t_2
-	dmultu	a_7,b_6		/* mul_add_c(a[7],b[6],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	sd	c_2,104(a0)	/* r[13]=c2; */
-
-	dmultu	a_7,b_7		/* mul_add_c(a[7],b[7],c3,c1,c2); */
-	ld	s0,0(sp)
-	ld	s1,8(sp)
-	ld	s2,16(sp)
-	ld	s3,24(sp)
-	ld	s4,32(sp)
-	ld	s5,40(sp)
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sd	c_3,112(a0)	/* r[14]=c3; */
-	sd	c_1,120(a0)	/* r[15]=c1; */
-
-	PTR_ADD	sp,FRAME_SIZE
-
-	jr	ra
-END(bn_mul_comba8)
-
-.align	5
-LEAF(bn_mul_comba4)
-	.set	reorder
-	ld	a_0,0(a1)
-	ld	b_0,0(a2)
-	ld	a_1,8(a1)
-	ld	a_2,16(a1)
-	dmultu	a_0,b_0		/* mul_add_c(a[0],b[0],c1,c2,c3); */
-	ld	a_3,24(a1)
-	ld	b_1,8(a2)
-	ld	b_2,16(a2)
-	ld	b_3,24(a2)
-	mflo	c_1
-	mfhi	c_2
-	sd	c_1,0(a0)
-
-	dmultu	a_0,b_1		/* mul_add_c(a[0],b[1],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	c_3,t_2,AT
-	dmultu	a_1,b_0		/* mul_add_c(a[1],b[0],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	c_1,c_3,t_2
-	sd	c_2,8(a0)
-
-	dmultu	a_2,b_0		/* mul_add_c(a[2],b[0],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	dmultu	a_1,b_1		/* mul_add_c(a[1],b[1],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	c_2,c_1,t_2
-	dmultu	a_0,b_2		/* mul_add_c(a[0],b[2],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	sd	c_3,16(a0)
-
-	dmultu	a_0,b_3		/* mul_add_c(a[0],b[3],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	c_3,c_2,t_2
-	dmultu	a_1,b_2		/* mul_add_c(a[1],b[2],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	dmultu	a_2,b_1		/* mul_add_c(a[2],b[1],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	dmultu	a_3,b_0		/* mul_add_c(a[3],b[0],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	sd	c_1,24(a0)
-
-	dmultu	a_3,b_1		/* mul_add_c(a[3],b[1],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	c_1,c_3,t_2
-	dmultu	a_2,b_2		/* mul_add_c(a[2],b[2],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	dmultu	a_1,b_3		/* mul_add_c(a[1],b[3],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	sd	c_2,32(a0)
-
-	dmultu	a_2,b_3		/* mul_add_c(a[2],b[3],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	c_2,c_1,t_2
-	dmultu	a_3,b_2		/* mul_add_c(a[3],b[2],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	sd	c_3,40(a0)
-
-	dmultu	a_3,b_3		/* mul_add_c(a[3],b[3],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sd	c_1,48(a0)
-	sd	c_2,56(a0)
-
-	jr	ra
-END(bn_mul_comba4)
-
-#undef	a_4
-#undef	a_5
-#undef	a_6
-#undef	a_7
-#define	a_4	b_0
-#define	a_5	b_1
-#define	a_6	b_2
-#define	a_7	b_3
-
-.align	5
-LEAF(bn_sqr_comba8)
-	.set	reorder
-	ld	a_0,0(a1)
-	ld	a_1,8(a1)
-	ld	a_2,16(a1)
-	ld	a_3,24(a1)
-
-	dmultu	a_0,a_0		/* mul_add_c(a[0],b[0],c1,c2,c3); */
-	ld	a_4,32(a1)
-	ld	a_5,40(a1)
-	ld	a_6,48(a1)
-	ld	a_7,56(a1)
-	mflo	c_1
-	mfhi	c_2
-	sd	c_1,0(a0)
-
-	dmultu	a_0,a_1		/* mul_add_c2(a[0],b[1],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	slt	c_1,t_2,zero
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	c_3,t_2,AT
-	sd	c_2,8(a0)
-
-	dmultu	a_2,a_0		/* mul_add_c2(a[2],b[0],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	slt	c_2,t_2,zero
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	dmultu	a_1,a_1		/* mul_add_c(a[1],b[1],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	sd	c_3,16(a0)
-
-	dmultu	a_0,a_3		/* mul_add_c2(a[0],b[3],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	slt	c_3,t_2,zero
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	dmultu	a_1,a_2		/* mul_add_c2(a[1],b[2],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	slt	AT,t_2,zero
-	daddu	c_3,AT
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	sd	c_1,24(a0)
-
-	dmultu	a_4,a_0		/* mul_add_c2(a[4],b[0],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	slt	c_1,t_2,zero
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	dmultu	a_3,a_1		/* mul_add_c2(a[3],b[1],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	slt	AT,t_2,zero
-	daddu	c_1,AT
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	dmultu	a_2,a_2		/* mul_add_c(a[2],b[2],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	sd	c_2,32(a0)
-
-	dmultu	a_0,a_5		/* mul_add_c2(a[0],b[5],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	slt	c_2,t_2,zero
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	dmultu	a_1,a_4		/* mul_add_c2(a[1],b[4],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	slt	AT,t_2,zero
-	daddu	c_2,AT
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	dmultu	a_2,a_3		/* mul_add_c2(a[2],b[3],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	slt	AT,t_2,zero
-	daddu	c_2,AT
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	sd	c_3,40(a0)
-
-	dmultu	a_6,a_0		/* mul_add_c2(a[6],b[0],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	slt	c_3,t_2,zero
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	dmultu	a_5,a_1		/* mul_add_c2(a[5],b[1],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	slt	AT,t_2,zero
-	daddu	c_3,AT
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	dmultu	a_4,a_2		/* mul_add_c2(a[4],b[2],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	slt	AT,t_2,zero
-	daddu	c_3,AT
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	dmultu	a_3,a_3		/* mul_add_c(a[3],b[3],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	sd	c_1,48(a0)
-
-	dmultu	a_0,a_7		/* mul_add_c2(a[0],b[7],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	slt	c_1,t_2,zero
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	dmultu	a_1,a_6		/* mul_add_c2(a[1],b[6],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	slt	AT,t_2,zero
-	daddu	c_1,AT
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	dmultu	a_2,a_5		/* mul_add_c2(a[2],b[5],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	slt	AT,t_2,zero
-	daddu	c_1,AT
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	dmultu	a_3,a_4		/* mul_add_c2(a[3],b[4],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	slt	AT,t_2,zero
-	daddu	c_1,AT
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	sd	c_2,56(a0)
-
-	dmultu	a_7,a_1		/* mul_add_c2(a[7],b[1],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	slt	c_2,t_2,zero
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	dmultu	a_6,a_2		/* mul_add_c2(a[6],b[2],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	slt	AT,t_2,zero
-	daddu	c_2,AT
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	dmultu	a_5,a_3		/* mul_add_c2(a[5],b[3],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	slt	AT,t_2,zero
-	daddu	c_2,AT
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	dmultu	a_4,a_4		/* mul_add_c(a[4],b[4],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	sd	c_3,64(a0)
-
-	dmultu	a_2,a_7		/* mul_add_c2(a[2],b[7],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	slt	c_3,t_2,zero
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	dmultu	a_3,a_6		/* mul_add_c2(a[3],b[6],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	slt	AT,t_2,zero
-	daddu	c_3,AT
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	dmultu	a_4,a_5		/* mul_add_c2(a[4],b[5],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	slt	AT,t_2,zero
-	daddu	c_3,AT
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	sd	c_1,72(a0)
-
-	dmultu	a_7,a_3		/* mul_add_c2(a[7],b[3],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	slt	c_1,t_2,zero
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	dmultu	a_6,a_4		/* mul_add_c2(a[6],b[4],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	slt	AT,t_2,zero
-	daddu	c_1,AT
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	dmultu	a_5,a_5		/* mul_add_c(a[5],b[5],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	sd	c_2,80(a0)
-
-	dmultu	a_4,a_7		/* mul_add_c2(a[4],b[7],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	slt	c_2,t_2,zero
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	dmultu	a_5,a_6		/* mul_add_c2(a[5],b[6],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	slt	AT,t_2,zero
-	daddu	c_2,AT
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	sd	c_3,88(a0)
-
-	dmultu	a_7,a_5		/* mul_add_c2(a[7],b[5],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	slt	c_3,t_2,zero
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	dmultu	a_6,a_6		/* mul_add_c(a[6],b[6],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	sd	c_1,96(a0)
-
-	dmultu	a_6,a_7		/* mul_add_c2(a[6],b[7],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	slt	c_1,t_2,zero
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	sd	c_2,104(a0)
-
-	dmultu	a_7,a_7		/* mul_add_c(a[7],b[7],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sd	c_3,112(a0)
-	sd	c_1,120(a0)
-
-	jr	ra
-END(bn_sqr_comba8)
-
-.align	5
-LEAF(bn_sqr_comba4)
-	.set	reorder
-	ld	a_0,0(a1)
-	ld	a_1,8(a1)
-	ld	a_2,16(a1)
-	ld	a_3,24(a1)
-	dmultu	a_0,a_0		/* mul_add_c(a[0],b[0],c1,c2,c3); */
-	mflo	c_1
-	mfhi	c_2
-	sd	c_1,0(a0)
-
-	dmultu	a_0,a_1		/* mul_add_c2(a[0],b[1],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	slt	c_1,t_2,zero
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	c_3,t_2,AT
-	sd	c_2,8(a0)
-
-	dmultu	a_2,a_0		/* mul_add_c2(a[2],b[0],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	slt	c_2,t_2,zero
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	dmultu	a_1,a_1		/* mul_add_c(a[1],b[1],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	sd	c_3,16(a0)
-
-	dmultu	a_0,a_3		/* mul_add_c2(a[0],b[3],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	slt	c_3,t_2,zero
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	dmultu	a_1,a_2		/* mul_add_c(a2[1],b[2],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	slt	AT,t_2,zero
-	daddu	c_3,AT
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sltu	AT,c_2,t_2
-	daddu	c_3,AT
-	sd	c_1,24(a0)
-
-	dmultu	a_3,a_1		/* mul_add_c2(a[3],b[1],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	slt	c_1,t_2,zero
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	dmultu	a_2,a_2		/* mul_add_c(a[2],b[2],c2,c3,c1); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_2,t_1
-	sltu	AT,c_2,t_1
-	daddu	t_2,AT
-	daddu	c_3,t_2
-	sltu	AT,c_3,t_2
-	daddu	c_1,AT
-	sd	c_2,32(a0)
-
-	dmultu	a_2,a_3		/* mul_add_c2(a[2],b[3],c3,c1,c2); */
-	mflo	t_1
-	mfhi	t_2
-	slt	c_2,t_2,zero
-	dsll	t_2,1
-	slt	a2,t_1,zero
-	daddu	t_2,a2
-	dsll	t_1,1
-	daddu	c_3,t_1
-	sltu	AT,c_3,t_1
-	daddu	t_2,AT
-	daddu	c_1,t_2
-	sltu	AT,c_1,t_2
-	daddu	c_2,AT
-	sd	c_3,40(a0)
-
-	dmultu	a_3,a_3		/* mul_add_c(a[3],b[3],c1,c2,c3); */
-	mflo	t_1
-	mfhi	t_2
-	daddu	c_1,t_1
-	sltu	AT,c_1,t_1
-	daddu	t_2,AT
-	daddu	c_2,t_2
-	sd	c_1,48(a0)
-	sd	c_2,56(a0)
-
-	jr	ra
-END(bn_sqr_comba4)
-- 
2.34.1