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-rw-r--r--networking/tls_pstm_sqr_comba.c1107
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diff --git a/networking/tls_pstm_sqr_comba.c b/networking/tls_pstm_sqr_comba.c
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+++ b/networking/tls_pstm_sqr_comba.c
@@ -0,0 +1,1107 @@
+/*
+ * Copyright (C) 2017 Denys Vlasenko
+ *
+ * Licensed under GPLv2, see file LICENSE in this source tree.
+ */
+#include "tls.h"
+
+/**
+ * @file pstm_sqr_comba.c
+ * @version 33ef80f (HEAD, tag: MATRIXSSL-3-7-2-OPEN, tag: MATRIXSSL-3-7-2-COMM, origin/master, origin/HEAD, master)
+ *
+ * Multiprecision Squaring with Comba technique.
+ */
+/*
+ * Copyright (c) 2013-2015 INSIDE Secure Corporation
+ * Copyright (c) PeerSec Networks, 2002-2011
+ * All Rights Reserved
+ *
+ * The latest version of this code is available at http://www.matrixssl.org
+ *
+ * This software is open source; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This General Public License does NOT permit incorporating this software
+ * into proprietary programs. If you are unable to comply with the GPL, a
+ * commercial license for this software may be purchased from INSIDE at
+ * http://www.insidesecure.com/eng/Company/Locations
+ *
+ * This program is distributed in WITHOUT ANY WARRANTY; without even the
+ * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ * See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+/******************************************************************************/
+
+///bbox
+//#include "../cryptoApi.h"
+#ifndef DISABLE_PSTM
+
+/******************************************************************************/
+#if defined(PSTM_X86)
+/* x86-32 optimized for 32 bit platforms. For 64 bit mode use X86_64 instead */
+#if !defined(__GNUC__) || !defined(__i386__)
+#error "PSTM_X86 option requires GCC and 32 bit mode x86 processor"
+#endif
+//#pragma message ("Using 32 bit x86 Assembly Optimizations")
+
+#define COMBA_START
+
+#define CLEAR_CARRY \
+ c0 = c1 = c2 = 0;
+
+#define COMBA_STORE(x) \
+ x = c0;
+
+#define COMBA_STORE2(x) \
+ x = c1;
+
+#define CARRY_FORWARD \
+ do { c0 = c1; c1 = c2; c2 = 0; } while (0);
+
+#define COMBA_FINI
+
+#define SQRADD(i, j) \
+asm( \
+ "movl %6,%%eax \n\t" \
+ "mull %%eax \n\t" \
+ "addl %%eax,%0 \n\t" \
+ "adcl %%edx,%1 \n\t" \
+ "adcl $0,%2 \n\t" \
+ :"=r"(c0), "=r"(c1), "=r"(c2): "0"(c0), "1"(c1), "2"(c2), "m"(i) :"%eax","%edx","%cc");
+
+#define SQRADD2(i, j) \
+asm( \
+ "movl %6,%%eax \n\t" \
+ "mull %7 \n\t" \
+ "addl %%eax,%0 \n\t" \
+ "adcl %%edx,%1 \n\t" \
+ "adcl $0,%2 \n\t" \
+ "addl %%eax,%0 \n\t" \
+ "adcl %%edx,%1 \n\t" \
+ "adcl $0,%2 \n\t" \
+ :"=r"(c0), "=r"(c1), "=r"(c2): "0"(c0), "1"(c1), "2"(c2), "m"(i), "m"(j) :"%eax","%edx","%cc");
+
+#define SQRADDSC(i, j) \
+asm( \
+ "movl %6,%%eax \n\t" \
+ "mull %7 \n\t" \
+ "movl %%eax,%0 \n\t" \
+ "movl %%edx,%1 \n\t" \
+ "xorl %2,%2 \n\t" \
+ :"=r"(sc0), "=r"(sc1), "=r"(sc2): "0"(sc0), "1"(sc1), "2"(sc2), "g"(i), "g"(j) :"%eax","%edx","%cc");
+
+#define SQRADDAC(i, j) \
+asm( \
+ "movl %6,%%eax \n\t" \
+ "mull %7 \n\t" \
+ "addl %%eax,%0 \n\t" \
+ "adcl %%edx,%1 \n\t" \
+ "adcl $0,%2 \n\t" \
+ :"=r"(sc0), "=r"(sc1), "=r"(sc2): "0"(sc0), "1"(sc1), "2"(sc2), "g"(i), "g"(j) :"%eax","%edx","%cc");
+
+#define SQRADDDB \
+asm( \
+ "addl %6,%0 \n\t" \
+ "adcl %7,%1 \n\t" \
+ "adcl %8,%2 \n\t" \
+ "addl %6,%0 \n\t" \
+ "adcl %7,%1 \n\t" \
+ "adcl %8,%2 \n\t" \
+ :"=r"(c0), "=r"(c1), "=r"(c2) : "0"(c0), "1"(c1), "2"(c2), "r"(sc0), "r"(sc1), "r"(sc2) : "%cc");
+
+/******************************************************************************/
+#elif defined(PSTM_X86_64)
+/* x86-64 optimized */
+#if !defined(__GNUC__) || !defined(__x86_64__) || !defined(PSTM_64BIT)
+#error "PSTM_X86_64 option requires PSTM_64BIT, GCC and 64 bit mode x86 processor"
+#endif
+//#pragma message ("Using 64 bit x86_64 Assembly Optimizations")
+
+#define COMBA_START
+
+#define CLEAR_CARRY \
+c0 = c1 = c2 = 0;
+
+#define COMBA_STORE(x) \
+x = c0;
+
+#define COMBA_STORE2(x) \
+x = c1;
+
+#define CARRY_FORWARD \
+do { c0 = c1; c1 = c2; c2 = 0; } while (0);
+
+#define COMBA_FINI
+
+#define SQRADD(i, j) \
+asm( \
+ "movq %6,%%rax \n\t" \
+ "mulq %%rax \n\t" \
+ "addq %%rax,%0 \n\t" \
+ "adcq %%rdx,%1 \n\t" \
+ "adcq $0,%2 \n\t" \
+ :"=r"(c0), "=r"(c1), "=r"(c2): "0"(c0), "1"(c1), "2"(c2), "g"(i) :"%rax","%rdx","cc");
+
+#define SQRADD2(i, j) \
+asm( \
+ "movq %6,%%rax \n\t" \
+ "mulq %7 \n\t" \
+ "addq %%rax,%0 \n\t" \
+ "adcq %%rdx,%1 \n\t" \
+ "adcq $0,%2 \n\t" \
+ "addq %%rax,%0 \n\t" \
+ "adcq %%rdx,%1 \n\t" \
+ "adcq $0,%2 \n\t" \
+ :"=r"(c0), "=r"(c1), "=r"(c2): "0"(c0), "1"(c1), "2"(c2), "g"(i), "g"(j) :"%rax","%rdx","cc");
+
+#define SQRADDSC(i, j) \
+asm( \
+ "movq %6,%%rax \n\t" \
+ "mulq %7 \n\t" \
+ "movq %%rax,%0 \n\t" \
+ "movq %%rdx,%1 \n\t" \
+ "xorq %2,%2 \n\t" \
+ :"=r"(sc0), "=r"(sc1), "=r"(sc2): "0"(sc0), "1"(sc1), "2"(sc2), "g"(i), "g"(j) :"%rax","%rdx","cc");
+
+#define SQRADDAC(i, j) \
+asm( \
+ "movq %6,%%rax \n\t" \
+ "mulq %7 \n\t" \
+ "addq %%rax,%0 \n\t" \
+ "adcq %%rdx,%1 \n\t" \
+ "adcq $0,%2 \n\t" \
+ :"=r"(sc0), "=r"(sc1), "=r"(sc2): "0"(sc0), "1"(sc1), "2"(sc2), "g"(i), "g"(j) :"%rax","%rdx","cc");
+
+#define SQRADDDB \
+asm( \
+ "addq %6,%0 \n\t" \
+ "adcq %7,%1 \n\t" \
+ "adcq %8,%2 \n\t" \
+ "addq %6,%0 \n\t" \
+ "adcq %7,%1 \n\t" \
+ "adcq %8,%2 \n\t" \
+ :"=r"(c0), "=r"(c1), "=r"(c2) : "0"(c0), "1"(c1), "2"(c2), "r"(sc0), "r"(sc1), "r"(sc2) : "cc");
+
+/******************************************************************************/
+#elif defined(PSTM_ARM)
+/* ARM code */
+//#pragma message ("Using 32 bit ARM Assembly Optimizations")
+
+#define COMBA_START
+
+#define CLEAR_CARRY \
+c0 = c1 = c2 = 0;
+
+#define COMBA_STORE(x) \
+x = c0;
+
+#define COMBA_STORE2(x) \
+x = c1;
+
+#define CARRY_FORWARD \
+do { c0 = c1; c1 = c2; c2 = 0; } while (0);
+
+#define COMBA_FINI
+
+/* multiplies point i and j, updates carry "c1" and digit c2 */
+#define SQRADD(i, j) \
+asm( \
+" UMULL r0,r1,%6,%6 \n\t" \
+" ADDS %0,%0,r0 \n\t" \
+" ADCS %1,%1,r1 \n\t" \
+" ADC %2,%2,#0 \n\t" \
+:"=r"(c0), "=r"(c1), "=r"(c2) : "0"(c0), "1"(c1), "2"(c2), "r"(i) : "r0", "r1", "%cc");
+
+/* for squaring some of the terms are doubled... */
+#define SQRADD2(i, j) \
+asm( \
+" UMULL r0,r1,%6,%7 \n\t" \
+" ADDS %0,%0,r0 \n\t" \
+" ADCS %1,%1,r1 \n\t" \
+" ADC %2,%2,#0 \n\t" \
+" ADDS %0,%0,r0 \n\t" \
+" ADCS %1,%1,r1 \n\t" \
+" ADC %2,%2,#0 \n\t" \
+:"=r"(c0), "=r"(c1), "=r"(c2) : "0"(c0), "1"(c1), "2"(c2), "r"(i), "r"(j) : "r0", "r1", "%cc");
+
+#define SQRADDSC(i, j) \
+asm( \
+" UMULL %0,%1,%6,%7 \n\t" \
+" SUB %2,%2,%2 \n\t" \
+:"=r"(sc0), "=r"(sc1), "=r"(sc2) : "0"(sc0), "1"(sc1), "2"(sc2), "r"(i), "r"(j) : "%cc");
+
+#define SQRADDAC(i, j) \
+asm( \
+" UMULL r0,r1,%6,%7 \n\t" \
+" ADDS %0,%0,r0 \n\t" \
+" ADCS %1,%1,r1 \n\t" \
+" ADC %2,%2,#0 \n\t" \
+:"=r"(sc0), "=r"(sc1), "=r"(sc2) : "0"(sc0), "1"(sc1), "2"(sc2), "r"(i), "r"(j) : "r0", "r1", "%cc");
+
+#define SQRADDDB \
+asm( \
+" ADDS %0,%0,%3 \n\t" \
+" ADCS %1,%1,%4 \n\t" \
+" ADC %2,%2,%5 \n\t" \
+" ADDS %0,%0,%3 \n\t" \
+" ADCS %1,%1,%4 \n\t" \
+" ADC %2,%2,%5 \n\t" \
+:"=r"(c0), "=r"(c1), "=r"(c2) : "r"(sc0), "r"(sc1), "r"(sc2), "0"(c0), "1"(c1), "2"(c2) : "%cc");
+
+/******************************************************************************/
+#elif defined(PSTM_MIPS)
+/* MIPS32 */
+//#pragma message ("Using 32 bit MIPS Assembly Optimizations")
+
+#define COMBA_START
+
+#define CLEAR_CARRY \
+c0 = c1 = c2 = 0;
+
+#define COMBA_STORE(x) \
+x = c0;
+
+#define COMBA_STORE2(x) \
+x = c1;
+
+#define CARRY_FORWARD \
+do { c0 = c1; c1 = c2; c2 = 0; } while (0);
+
+#define COMBA_FINI
+
+/* multiplies point i and j, updates carry "c1" and digit c2 */
+#define SQRADD(i, j) \
+asm( \
+ " multu %6,%6 \n\t" \
+ " mflo $12 \n\t" \
+ " mfhi $13 \n\t" \
+ " addu %0,%0,$12 \n\t" \
+ " sltu $12,%0,$12 \n\t" \
+ " addu %1,%1,$13 \n\t" \
+ " sltu $13,%1,$13 \n\t" \
+ " addu %1,%1,$12 \n\t" \
+ " sltu $12,%1,$12 \n\t" \
+ " addu %2,%2,$13 \n\t" \
+ " addu %2,%2,$12 \n\t" \
+ :"=r"(c0), "=r"(c1), "=r"(c2):"0"(c0), "1"(c1), "2"(c2), "r"(i):"$12","$13");
+
+/* for squaring some of the terms are doubled... */
+#define SQRADD2(i, j) \
+asm( \
+ " multu %6,%7 \n\t" \
+ " mflo $12 \n\t" \
+ " mfhi $13 \n\t" \
+ \
+ " addu %0,%0,$12 \n\t" \
+ " sltu $14,%0,$12 \n\t" \
+ " addu %1,%1,$13 \n\t" \
+ " sltu $15,%1,$13 \n\t" \
+ " addu %1,%1,$14 \n\t" \
+ " sltu $14,%1,$14 \n\t" \
+ " addu %2,%2,$15 \n\t" \
+ " addu %2,%2,$14 \n\t" \
+ \
+ " addu %0,%0,$12 \n\t" \
+ " sltu $14,%0,$12 \n\t" \
+ " addu %1,%1,$13 \n\t" \
+ " sltu $15,%1,$13 \n\t" \
+ " addu %1,%1,$14 \n\t" \
+ " sltu $14,%1,$14 \n\t" \
+ " addu %2,%2,$15 \n\t" \
+ " addu %2,%2,$14 \n\t" \
+ :"=r"(c0), "=r"(c1), "=r"(c2):"0"(c0), "1"(c1), "2"(c2), "r"(i), "r"(j):"$12", "$13", "$14", "$15");
+
+#define SQRADDSC(i, j) \
+asm( \
+ " multu %6,%7 \n\t" \
+ " mflo %0 \n\t" \
+ " mfhi %1 \n\t" \
+ " xor %2,%2,%2 \n\t" \
+ :"=r"(sc0), "=r"(sc1), "=r"(sc2):"0"(sc0), "1"(sc1), "2"(sc2), "r"(i),"r"(j) : "%cc");
+
+#define SQRADDAC(i, j) \
+asm( \
+ " multu %6,%7 \n\t" \
+ " mflo $12 \n\t" \
+ " mfhi $13 \n\t" \
+ " addu %0,%0,$12 \n\t" \
+ " sltu $12,%0,$12 \n\t" \
+ " addu %1,%1,$13 \n\t" \
+ " sltu $13,%1,$13 \n\t" \
+ " addu %1,%1,$12 \n\t" \
+ " sltu $12,%1,$12 \n\t" \
+ " addu %2,%2,$13 \n\t" \
+ " addu %2,%2,$12 \n\t" \
+ :"=r"(sc0), "=r"(sc1), "=r"(sc2):"0"(sc0), "1"(sc1), "2"(sc2), "r"(i), "r"(j):"$12", "$13", "$14");
+
+#define SQRADDDB \
+asm( \
+ " addu %0,%0,%3 \n\t" \
+ " sltu $10,%0,%3 \n\t" \
+ " addu %1,%1,$10 \n\t" \
+ " sltu $10,%1,$10 \n\t" \
+ " addu %1,%1,%4 \n\t" \
+ " sltu $11,%1,%4 \n\t" \
+ " addu %2,%2,$10 \n\t" \
+ " addu %2,%2,$11 \n\t" \
+ " addu %2,%2,%5 \n\t" \
+ \
+ " addu %0,%0,%3 \n\t" \
+ " sltu $10,%0,%3 \n\t" \
+ " addu %1,%1,$10 \n\t" \
+ " sltu $10,%1,$10 \n\t" \
+ " addu %1,%1,%4 \n\t" \
+ " sltu $11,%1,%4 \n\t" \
+ " addu %2,%2,$10 \n\t" \
+ " addu %2,%2,$11 \n\t" \
+ " addu %2,%2,%5 \n\t" \
+ :"=r"(c0), "=r"(c1), "=r"(c2) : "r"(sc0), "r"(sc1), "r"(sc2), "0"(c0), "1"(c1), "2"(c2) : "$10", "$11");
+
+#else
+/******************************************************************************/
+#define PSTM_ISO
+/* ISO C portable code */
+
+#define COMBA_START
+
+#define CLEAR_CARRY \
+ c0 = c1 = c2 = 0;
+
+#define COMBA_STORE(x) \
+ x = c0;
+
+#define COMBA_STORE2(x) \
+ x = c1;
+
+#define CARRY_FORWARD \
+ do { c0 = c1; c1 = c2; c2 = 0; } while (0);
+
+#define COMBA_FINI
+
+/* multiplies point i and j, updates carry "c1" and digit c2 */
+#define SQRADD(i, j) \
+ do { pstm_word t; \
+ t = c0 + ((pstm_word)i) * ((pstm_word)j); c0 = (pstm_digit)t; \
+ t = c1 + (t >> DIGIT_BIT); \
+ c1 = (pstm_digit)t; c2 += (pstm_digit)(t >> DIGIT_BIT); \
+ } while (0);
+
+
+/* for squaring some of the terms are doubled... */
+#define SQRADD2(i, j) \
+ do { pstm_word t; \
+ t = ((pstm_word)i) * ((pstm_word)j); \
+ tt = (pstm_word)c0 + t; c0 = (pstm_digit)tt; \
+ tt = (pstm_word)c1 + (tt >> DIGIT_BIT); \
+ c1 = (pstm_digit)tt; c2 += (pstm_digit)(tt >> DIGIT_BIT); \
+ tt = (pstm_word)c0 + t; c0 = (pstm_digit)tt; \
+ tt = (pstm_word)c1 + (tt >> DIGIT_BIT); \
+ c1 = (pstm_digit)tt; c2 += (pstm_digit)(tt >> DIGIT_BIT); \
+ } while (0);
+
+#define SQRADDSC(i, j) \
+ do { pstm_word t; \
+ t = ((pstm_word)i) * ((pstm_word)j); \
+ sc0 = (pstm_digit)t; sc1 = (pstm_digit)(t >> DIGIT_BIT); sc2 = 0; \
+ } while (0);
+
+#define SQRADDAC(i, j) \
+ do { pstm_word t; \
+ t = ((pstm_word)sc0) + ((pstm_word)i) * ((pstm_word)j); \
+ sc0 = (pstm_digit)t; \
+ t = ((pstm_word)sc1) + (t >> DIGIT_BIT); sc1 = (pstm_digit)t; \
+ sc2 += (pstm_digit)(t >> DIGIT_BIT); \
+ } while (0);
+
+#define SQRADDDB \
+ do { pstm_word t; \
+ t = ((pstm_word)sc0) + ((pstm_word)sc0) + ((pstm_word)c0); \
+ c0 = (pstm_digit)t; \
+ t = ((pstm_word)sc1) + ((pstm_word)sc1) + c1 + (t >> DIGIT_BIT); \
+ c1 = (pstm_digit)t; \
+ c2 = c2 + sc2 + sc2 + (pstm_digit)(t >> DIGIT_BIT); \
+ } while (0);
+
+#endif /* ISO_C */
+
+/******************************************************************************/
+/*
+ Non-unrolled comba squarer
+ */
+///bbox: pool unused
+#define pstm_sqr_comba_gen(pool, A, B, paD, paDlen) \
+ pstm_sqr_comba_gen( A, B, paD, paDlen)
+static int32 pstm_sqr_comba_gen(psPool_t *pool, pstm_int *A, pstm_int *B,
+ pstm_digit *paD, uint32 paDlen)
+{
+ int16 paDfail, pa;
+ int32 ix, iz;
+ pstm_digit c0, c1, c2, *dst;
+#ifdef PSTM_ISO
+ pstm_word tt;
+#endif
+
+ paDfail = 0;
+ /* get size of output and trim */
+ pa = A->used + A->used;
+
+ /* number of output digits to produce */
+ COMBA_START;
+ CLEAR_CARRY;
+/*
+ If b is not large enough grow it and continue
+*/
+ if (B->alloc < pa) {
+ if (pstm_grow(B, pa) != PSTM_OKAY) {
+ return PS_MEM_FAIL;
+ }
+ }
+ if (paD != NULL) {
+ if (paDlen < (sizeof(pstm_digit) * pa)) {
+ paDfail = 1; /* have a paD, but it's not big enough */
+ dst = xzalloc(sizeof(pstm_digit) * pa);
+ } else {
+ dst = paD;
+ memset(dst, 0x0, paDlen);
+ }
+ } else {
+ dst = xzalloc(sizeof(pstm_digit) * pa);
+ }
+
+ for (ix = 0; ix < pa; ix++) {
+ int32 tx, ty, iy;
+ pstm_digit *tmpy, *tmpx;
+
+ /* get offsets into the two bignums */
+ ty = min(A->used-1, ix);
+ tx = ix - ty;
+
+ /* setup temp aliases */
+ tmpx = A->dp + tx;
+ tmpy = A->dp + ty;
+
+/*
+ This is the number of times the loop will iterate,
+ while (tx++ < a->used && ty-- >= 0) { ... }
+*/
+ iy = min(A->used-tx, ty+1);
+
+/*
+ now for squaring tx can never equal ty. We halve the distance since
+ they approach at a rate of 2x and we have to round because odd cases
+ need to be executed
+*/
+ iy = min(iy, (ty-tx+1)>>1);
+
+ /* forward carries */
+ CARRY_FORWARD;
+
+ /* execute loop */
+ for (iz = 0; iz < iy; iz++) {
+ SQRADD2(*tmpx++, *tmpy--);
+ }
+
+ /* even columns have the square term in them */
+ if ((ix&1) == 0) {
+ SQRADD(A->dp[ix>>1], A->dp[ix>>1]);
+ }
+
+ /* store it */
+ COMBA_STORE(dst[ix]);
+ }
+
+ COMBA_FINI;
+/*
+ setup dest
+ */
+ iz = B->used;
+ B->used = pa;
+ {
+ pstm_digit *tmpc;
+ tmpc = B->dp;
+ for (ix = 0; ix < pa; ix++) {
+ *tmpc++ = dst[ix];
+ }
+ /* clear unused digits (that existed in the old copy of c) */
+ for (; ix < iz; ix++) {
+ *tmpc++ = 0;
+ }
+ }
+ pstm_clamp(B);
+
+ if ((paD == NULL) || paDfail == 1) {
+ psFree(dst, pool);
+ }
+ return PS_SUCCESS;
+}
+
+/******************************************************************************/
+/*
+ Unrolled Comba loop for 1024 bit keys
+ */
+#ifdef USE_1024_KEY_SPEED_OPTIMIZATIONS
+static int32 pstm_sqr_comba16(pstm_int *A, pstm_int *B)
+{
+ pstm_digit *a, b[32], c0, c1, c2, sc0, sc1, sc2;
+#ifdef PSTM_ISO
+ pstm_word tt;
+#endif
+
+ if (B->alloc < 32) {
+ if (pstm_grow(B, 32) != PSTM_OKAY) {
+ return PS_MEM_FAIL;
+ }
+ }
+ a = A->dp;
+ sc0 = sc1 = sc2 = 0;
+
+ COMBA_START;
+
+ /* clear carries */
+ CLEAR_CARRY;
+
+ /* output 0 */
+ SQRADD(a[0],a[0]);
+ COMBA_STORE(b[0]);
+
+ /* output 1 */
+ CARRY_FORWARD;
+ SQRADD2(a[0], a[1]);
+ COMBA_STORE(b[1]);
+
+ /* output 2 */
+ CARRY_FORWARD;
+ SQRADD2(a[0], a[2]); SQRADD(a[1], a[1]);
+ COMBA_STORE(b[2]);
+
+ /* output 3 */
+ CARRY_FORWARD;
+ SQRADD2(a[0], a[3]); SQRADD2(a[1], a[2]);
+ COMBA_STORE(b[3]);
+
+ /* output 4 */
+ CARRY_FORWARD;
+ SQRADD2(a[0], a[4]); SQRADD2(a[1], a[3]); SQRADD(a[2], a[2]);
+ COMBA_STORE(b[4]);
+
+ /* output 5 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[5]); SQRADDAC(a[1], a[4]); SQRADDAC(a[2], a[3]); SQRADDDB;
+ COMBA_STORE(b[5]);
+
+ /* output 6 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[6]); SQRADDAC(a[1], a[5]); SQRADDAC(a[2], a[4]); SQRADDDB; SQRADD(a[3], a[3]);
+ COMBA_STORE(b[6]);
+
+ /* output 7 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[7]); SQRADDAC(a[1], a[6]); SQRADDAC(a[2], a[5]); SQRADDAC(a[3], a[4]); SQRADDDB;
+ COMBA_STORE(b[7]);
+
+ /* output 8 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[8]); SQRADDAC(a[1], a[7]); SQRADDAC(a[2], a[6]); SQRADDAC(a[3], a[5]); SQRADDDB; SQRADD(a[4], a[4]);
+ COMBA_STORE(b[8]);
+
+ /* output 9 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[9]); SQRADDAC(a[1], a[8]); SQRADDAC(a[2], a[7]); SQRADDAC(a[3], a[6]); SQRADDAC(a[4], a[5]); SQRADDDB;
+ COMBA_STORE(b[9]);
+
+ /* output 10 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[10]); SQRADDAC(a[1], a[9]); SQRADDAC(a[2], a[8]); SQRADDAC(a[3], a[7]); SQRADDAC(a[4], a[6]); SQRADDDB; SQRADD(a[5], a[5]);
+ COMBA_STORE(b[10]);
+
+ /* output 11 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[11]); SQRADDAC(a[1], a[10]); SQRADDAC(a[2], a[9]); SQRADDAC(a[3], a[8]); SQRADDAC(a[4], a[7]); SQRADDAC(a[5], a[6]); SQRADDDB;
+ COMBA_STORE(b[11]);
+
+ /* output 12 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[12]); SQRADDAC(a[1], a[11]); SQRADDAC(a[2], a[10]); SQRADDAC(a[3], a[9]); SQRADDAC(a[4], a[8]); SQRADDAC(a[5], a[7]); SQRADDDB; SQRADD(a[6], a[6]);
+ COMBA_STORE(b[12]);
+
+ /* output 13 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[13]); SQRADDAC(a[1], a[12]); SQRADDAC(a[2], a[11]); SQRADDAC(a[3], a[10]); SQRADDAC(a[4], a[9]); SQRADDAC(a[5], a[8]); SQRADDAC(a[6], a[7]); SQRADDDB;
+ COMBA_STORE(b[13]);
+
+ /* output 14 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[14]); SQRADDAC(a[1], a[13]); SQRADDAC(a[2], a[12]); SQRADDAC(a[3], a[11]); SQRADDAC(a[4], a[10]); SQRADDAC(a[5], a[9]); SQRADDAC(a[6], a[8]); SQRADDDB; SQRADD(a[7], a[7]);
+ COMBA_STORE(b[14]);
+
+ /* output 15 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[15]); SQRADDAC(a[1], a[14]); SQRADDAC(a[2], a[13]); SQRADDAC(a[3], a[12]); SQRADDAC(a[4], a[11]); SQRADDAC(a[5], a[10]); SQRADDAC(a[6], a[9]); SQRADDAC(a[7], a[8]); SQRADDDB;
+ COMBA_STORE(b[15]);
+
+ /* output 16 */
+ CARRY_FORWARD;
+ SQRADDSC(a[1], a[15]); SQRADDAC(a[2], a[14]); SQRADDAC(a[3], a[13]); SQRADDAC(a[4], a[12]); SQRADDAC(a[5], a[11]); SQRADDAC(a[6], a[10]); SQRADDAC(a[7], a[9]); SQRADDDB; SQRADD(a[8], a[8]);
+ COMBA_STORE(b[16]);
+
+ /* output 17 */
+ CARRY_FORWARD;
+ SQRADDSC(a[2], a[15]); SQRADDAC(a[3], a[14]); SQRADDAC(a[4], a[13]); SQRADDAC(a[5], a[12]); SQRADDAC(a[6], a[11]); SQRADDAC(a[7], a[10]); SQRADDAC(a[8], a[9]); SQRADDDB;
+ COMBA_STORE(b[17]);
+
+ /* output 18 */
+ CARRY_FORWARD;
+ SQRADDSC(a[3], a[15]); SQRADDAC(a[4], a[14]); SQRADDAC(a[5], a[13]); SQRADDAC(a[6], a[12]); SQRADDAC(a[7], a[11]); SQRADDAC(a[8], a[10]); SQRADDDB; SQRADD(a[9], a[9]);
+ COMBA_STORE(b[18]);
+
+ /* output 19 */
+ CARRY_FORWARD;
+ SQRADDSC(a[4], a[15]); SQRADDAC(a[5], a[14]); SQRADDAC(a[6], a[13]); SQRADDAC(a[7], a[12]); SQRADDAC(a[8], a[11]); SQRADDAC(a[9], a[10]); SQRADDDB;
+ COMBA_STORE(b[19]);
+
+ /* output 20 */
+ CARRY_FORWARD;
+ SQRADDSC(a[5], a[15]); SQRADDAC(a[6], a[14]); SQRADDAC(a[7], a[13]); SQRADDAC(a[8], a[12]); SQRADDAC(a[9], a[11]); SQRADDDB; SQRADD(a[10], a[10]);
+ COMBA_STORE(b[20]);
+
+ /* output 21 */
+ CARRY_FORWARD;
+ SQRADDSC(a[6], a[15]); SQRADDAC(a[7], a[14]); SQRADDAC(a[8], a[13]); SQRADDAC(a[9], a[12]); SQRADDAC(a[10], a[11]); SQRADDDB;
+ COMBA_STORE(b[21]);
+
+ /* output 22 */
+ CARRY_FORWARD;
+ SQRADDSC(a[7], a[15]); SQRADDAC(a[8], a[14]); SQRADDAC(a[9], a[13]); SQRADDAC(a[10], a[12]); SQRADDDB; SQRADD(a[11], a[11]);
+ COMBA_STORE(b[22]);
+
+ /* output 23 */
+ CARRY_FORWARD;
+ SQRADDSC(a[8], a[15]); SQRADDAC(a[9], a[14]); SQRADDAC(a[10], a[13]); SQRADDAC(a[11], a[12]); SQRADDDB;
+ COMBA_STORE(b[23]);
+
+ /* output 24 */
+ CARRY_FORWARD;
+ SQRADDSC(a[9], a[15]); SQRADDAC(a[10], a[14]); SQRADDAC(a[11], a[13]); SQRADDDB; SQRADD(a[12], a[12]);
+ COMBA_STORE(b[24]);
+
+ /* output 25 */
+ CARRY_FORWARD;
+ SQRADDSC(a[10], a[15]); SQRADDAC(a[11], a[14]); SQRADDAC(a[12], a[13]); SQRADDDB;
+ COMBA_STORE(b[25]);
+
+ /* output 26 */
+ CARRY_FORWARD;
+ SQRADD2(a[11], a[15]); SQRADD2(a[12], a[14]); SQRADD(a[13], a[13]);
+ COMBA_STORE(b[26]);
+
+ /* output 27 */
+ CARRY_FORWARD;
+ SQRADD2(a[12], a[15]); SQRADD2(a[13], a[14]);
+ COMBA_STORE(b[27]);
+
+ /* output 28 */
+ CARRY_FORWARD;
+ SQRADD2(a[13], a[15]); SQRADD(a[14], a[14]);
+ COMBA_STORE(b[28]);
+
+ /* output 29 */
+ CARRY_FORWARD;
+ SQRADD2(a[14], a[15]);
+ COMBA_STORE(b[29]);
+
+ /* output 30 */
+ CARRY_FORWARD;
+ SQRADD(a[15], a[15]);
+ COMBA_STORE(b[30]);
+ COMBA_STORE2(b[31]);
+ COMBA_FINI;
+
+ B->used = 32;
+ B->sign = PSTM_ZPOS;
+ memcpy(B->dp, b, 32 * sizeof(pstm_digit));
+ pstm_clamp(B);
+ return PSTM_OKAY;
+}
+#endif /* USE_1024_KEY_SPEED_OPTIMIZATIONS */
+
+
+#ifdef USE_2048_KEY_SPEED_OPTIMIZATIONS
+static int32 pstm_sqr_comba32(pstm_int *A, pstm_int *B)
+{
+ pstm_digit *a, b[64], c0, c1, c2, sc0, sc1, sc2;
+#ifdef PSTM_ISO
+ pstm_word tt;
+#endif
+
+ if (B->alloc < 64) {
+ if (pstm_grow(B, 64) != PSTM_OKAY) {
+ return PS_MEM_FAIL;
+ }
+ }
+ sc0 = sc1 = sc2 = 0;
+ a = A->dp;
+ COMBA_START;
+
+ /* clear carries */
+ CLEAR_CARRY;
+
+ /* output 0 */
+ SQRADD(a[0],a[0]);
+ COMBA_STORE(b[0]);
+
+ /* output 1 */
+ CARRY_FORWARD;
+ SQRADD2(a[0], a[1]);
+ COMBA_STORE(b[1]);
+
+ /* output 2 */
+ CARRY_FORWARD;
+ SQRADD2(a[0], a[2]); SQRADD(a[1], a[1]);
+ COMBA_STORE(b[2]);
+
+ /* output 3 */
+ CARRY_FORWARD;
+ SQRADD2(a[0], a[3]); SQRADD2(a[1], a[2]);
+ COMBA_STORE(b[3]);
+
+ /* output 4 */
+ CARRY_FORWARD;
+ SQRADD2(a[0], a[4]); SQRADD2(a[1], a[3]); SQRADD(a[2], a[2]);
+ COMBA_STORE(b[4]);
+
+ /* output 5 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[5]); SQRADDAC(a[1], a[4]); SQRADDAC(a[2], a[3]); SQRADDDB;
+ COMBA_STORE(b[5]);
+
+ /* output 6 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[6]); SQRADDAC(a[1], a[5]); SQRADDAC(a[2], a[4]); SQRADDDB; SQRADD(a[3], a[3]);
+ COMBA_STORE(b[6]);
+
+ /* output 7 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[7]); SQRADDAC(a[1], a[6]); SQRADDAC(a[2], a[5]); SQRADDAC(a[3], a[4]); SQRADDDB;
+ COMBA_STORE(b[7]);
+
+ /* output 8 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[8]); SQRADDAC(a[1], a[7]); SQRADDAC(a[2], a[6]); SQRADDAC(a[3], a[5]); SQRADDDB; SQRADD(a[4], a[4]);
+ COMBA_STORE(b[8]);
+
+ /* output 9 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[9]); SQRADDAC(a[1], a[8]); SQRADDAC(a[2], a[7]); SQRADDAC(a[3], a[6]); SQRADDAC(a[4], a[5]); SQRADDDB;
+ COMBA_STORE(b[9]);
+
+ /* output 10 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[10]); SQRADDAC(a[1], a[9]); SQRADDAC(a[2], a[8]); SQRADDAC(a[3], a[7]); SQRADDAC(a[4], a[6]); SQRADDDB; SQRADD(a[5], a[5]);
+ COMBA_STORE(b[10]);
+
+ /* output 11 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[11]); SQRADDAC(a[1], a[10]); SQRADDAC(a[2], a[9]); SQRADDAC(a[3], a[8]); SQRADDAC(a[4], a[7]); SQRADDAC(a[5], a[6]); SQRADDDB;
+ COMBA_STORE(b[11]);
+
+ /* output 12 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[12]); SQRADDAC(a[1], a[11]); SQRADDAC(a[2], a[10]); SQRADDAC(a[3], a[9]); SQRADDAC(a[4], a[8]); SQRADDAC(a[5], a[7]); SQRADDDB; SQRADD(a[6], a[6]);
+ COMBA_STORE(b[12]);
+
+ /* output 13 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[13]); SQRADDAC(a[1], a[12]); SQRADDAC(a[2], a[11]); SQRADDAC(a[3], a[10]); SQRADDAC(a[4], a[9]); SQRADDAC(a[5], a[8]); SQRADDAC(a[6], a[7]); SQRADDDB;
+ COMBA_STORE(b[13]);
+
+ /* output 14 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[14]); SQRADDAC(a[1], a[13]); SQRADDAC(a[2], a[12]); SQRADDAC(a[3], a[11]); SQRADDAC(a[4], a[10]); SQRADDAC(a[5], a[9]); SQRADDAC(a[6], a[8]); SQRADDDB; SQRADD(a[7], a[7]);
+ COMBA_STORE(b[14]);
+
+ /* output 15 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[15]); SQRADDAC(a[1], a[14]); SQRADDAC(a[2], a[13]); SQRADDAC(a[3], a[12]); SQRADDAC(a[4], a[11]); SQRADDAC(a[5], a[10]); SQRADDAC(a[6], a[9]); SQRADDAC(a[7], a[8]); SQRADDDB;
+ COMBA_STORE(b[15]);
+
+ /* output 16 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[16]); SQRADDAC(a[1], a[15]); SQRADDAC(a[2], a[14]); SQRADDAC(a[3], a[13]); SQRADDAC(a[4], a[12]); SQRADDAC(a[5], a[11]); SQRADDAC(a[6], a[10]); SQRADDAC(a[7], a[9]); SQRADDDB; SQRADD(a[8], a[8]);
+ COMBA_STORE(b[16]);
+
+ /* output 17 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[17]); SQRADDAC(a[1], a[16]); SQRADDAC(a[2], a[15]); SQRADDAC(a[3], a[14]); SQRADDAC(a[4], a[13]); SQRADDAC(a[5], a[12]); SQRADDAC(a[6], a[11]); SQRADDAC(a[7], a[10]); SQRADDAC(a[8], a[9]); SQRADDDB;
+ COMBA_STORE(b[17]);
+
+ /* output 18 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[18]); SQRADDAC(a[1], a[17]); SQRADDAC(a[2], a[16]); SQRADDAC(a[3], a[15]); SQRADDAC(a[4], a[14]); SQRADDAC(a[5], a[13]); SQRADDAC(a[6], a[12]); SQRADDAC(a[7], a[11]); SQRADDAC(a[8], a[10]); SQRADDDB; SQRADD(a[9], a[9]);
+ COMBA_STORE(b[18]);
+
+ /* output 19 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[19]); SQRADDAC(a[1], a[18]); SQRADDAC(a[2], a[17]); SQRADDAC(a[3], a[16]); SQRADDAC(a[4], a[15]); SQRADDAC(a[5], a[14]); SQRADDAC(a[6], a[13]); SQRADDAC(a[7], a[12]); SQRADDAC(a[8], a[11]); SQRADDAC(a[9], a[10]); SQRADDDB;
+ COMBA_STORE(b[19]);
+
+ /* output 20 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[20]); SQRADDAC(a[1], a[19]); SQRADDAC(a[2], a[18]); SQRADDAC(a[3], a[17]); SQRADDAC(a[4], a[16]); SQRADDAC(a[5], a[15]); SQRADDAC(a[6], a[14]); SQRADDAC(a[7], a[13]); SQRADDAC(a[8], a[12]); SQRADDAC(a[9], a[11]); SQRADDDB; SQRADD(a[10], a[10]);
+ COMBA_STORE(b[20]);
+
+ /* output 21 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[21]); SQRADDAC(a[1], a[20]); SQRADDAC(a[2], a[19]); SQRADDAC(a[3], a[18]); SQRADDAC(a[4], a[17]); SQRADDAC(a[5], a[16]); SQRADDAC(a[6], a[15]); SQRADDAC(a[7], a[14]); SQRADDAC(a[8], a[13]); SQRADDAC(a[9], a[12]); SQRADDAC(a[10], a[11]); SQRADDDB;
+ COMBA_STORE(b[21]);
+
+ /* output 22 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[22]); SQRADDAC(a[1], a[21]); SQRADDAC(a[2], a[20]); SQRADDAC(a[3], a[19]); SQRADDAC(a[4], a[18]); SQRADDAC(a[5], a[17]); SQRADDAC(a[6], a[16]); SQRADDAC(a[7], a[15]); SQRADDAC(a[8], a[14]); SQRADDAC(a[9], a[13]); SQRADDAC(a[10], a[12]); SQRADDDB; SQRADD(a[11], a[11]);
+ COMBA_STORE(b[22]);
+
+ /* output 23 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[23]); SQRADDAC(a[1], a[22]); SQRADDAC(a[2], a[21]); SQRADDAC(a[3], a[20]); SQRADDAC(a[4], a[19]); SQRADDAC(a[5], a[18]); SQRADDAC(a[6], a[17]); SQRADDAC(a[7], a[16]); SQRADDAC(a[8], a[15]); SQRADDAC(a[9], a[14]); SQRADDAC(a[10], a[13]); SQRADDAC(a[11], a[12]); SQRADDDB;
+ COMBA_STORE(b[23]);
+
+ /* output 24 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[24]); SQRADDAC(a[1], a[23]); SQRADDAC(a[2], a[22]); SQRADDAC(a[3], a[21]); SQRADDAC(a[4], a[20]); SQRADDAC(a[5], a[19]); SQRADDAC(a[6], a[18]); SQRADDAC(a[7], a[17]); SQRADDAC(a[8], a[16]); SQRADDAC(a[9], a[15]); SQRADDAC(a[10], a[14]); SQRADDAC(a[11], a[13]); SQRADDDB; SQRADD(a[12], a[12]);
+ COMBA_STORE(b[24]);
+
+ /* output 25 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[25]); SQRADDAC(a[1], a[24]); SQRADDAC(a[2], a[23]); SQRADDAC(a[3], a[22]); SQRADDAC(a[4], a[21]); SQRADDAC(a[5], a[20]); SQRADDAC(a[6], a[19]); SQRADDAC(a[7], a[18]); SQRADDAC(a[8], a[17]); SQRADDAC(a[9], a[16]); SQRADDAC(a[10], a[15]); SQRADDAC(a[11], a[14]); SQRADDAC(a[12], a[13]); SQRADDDB;
+ COMBA_STORE(b[25]);
+
+ /* output 26 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[26]); SQRADDAC(a[1], a[25]); SQRADDAC(a[2], a[24]); SQRADDAC(a[3], a[23]); SQRADDAC(a[4], a[22]); SQRADDAC(a[5], a[21]); SQRADDAC(a[6], a[20]); SQRADDAC(a[7], a[19]); SQRADDAC(a[8], a[18]); SQRADDAC(a[9], a[17]); SQRADDAC(a[10], a[16]); SQRADDAC(a[11], a[15]); SQRADDAC(a[12], a[14]); SQRADDDB; SQRADD(a[13], a[13]);
+ COMBA_STORE(b[26]);
+
+ /* output 27 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[27]); SQRADDAC(a[1], a[26]); SQRADDAC(a[2], a[25]); SQRADDAC(a[3], a[24]); SQRADDAC(a[4], a[23]); SQRADDAC(a[5], a[22]); SQRADDAC(a[6], a[21]); SQRADDAC(a[7], a[20]); SQRADDAC(a[8], a[19]); SQRADDAC(a[9], a[18]); SQRADDAC(a[10], a[17]); SQRADDAC(a[11], a[16]); SQRADDAC(a[12], a[15]); SQRADDAC(a[13], a[14]); SQRADDDB;
+ COMBA_STORE(b[27]);
+
+ /* output 28 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[28]); SQRADDAC(a[1], a[27]); SQRADDAC(a[2], a[26]); SQRADDAC(a[3], a[25]); SQRADDAC(a[4], a[24]); SQRADDAC(a[5], a[23]); SQRADDAC(a[6], a[22]); SQRADDAC(a[7], a[21]); SQRADDAC(a[8], a[20]); SQRADDAC(a[9], a[19]); SQRADDAC(a[10], a[18]); SQRADDAC(a[11], a[17]); SQRADDAC(a[12], a[16]); SQRADDAC(a[13], a[15]); SQRADDDB; SQRADD(a[14], a[14]);
+ COMBA_STORE(b[28]);
+
+ /* output 29 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[29]); SQRADDAC(a[1], a[28]); SQRADDAC(a[2], a[27]); SQRADDAC(a[3], a[26]); SQRADDAC(a[4], a[25]); SQRADDAC(a[5], a[24]); SQRADDAC(a[6], a[23]); SQRADDAC(a[7], a[22]); SQRADDAC(a[8], a[21]); SQRADDAC(a[9], a[20]); SQRADDAC(a[10], a[19]); SQRADDAC(a[11], a[18]); SQRADDAC(a[12], a[17]); SQRADDAC(a[13], a[16]); SQRADDAC(a[14], a[15]); SQRADDDB;
+ COMBA_STORE(b[29]);
+
+ /* output 30 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[30]); SQRADDAC(a[1], a[29]); SQRADDAC(a[2], a[28]); SQRADDAC(a[3], a[27]); SQRADDAC(a[4], a[26]); SQRADDAC(a[5], a[25]); SQRADDAC(a[6], a[24]); SQRADDAC(a[7], a[23]); SQRADDAC(a[8], a[22]); SQRADDAC(a[9], a[21]); SQRADDAC(a[10], a[20]); SQRADDAC(a[11], a[19]); SQRADDAC(a[12], a[18]); SQRADDAC(a[13], a[17]); SQRADDAC(a[14], a[16]); SQRADDDB; SQRADD(a[15], a[15]);
+ COMBA_STORE(b[30]);
+
+ /* output 31 */
+ CARRY_FORWARD;
+ SQRADDSC(a[0], a[31]); SQRADDAC(a[1], a[30]); SQRADDAC(a[2], a[29]); SQRADDAC(a[3], a[28]); SQRADDAC(a[4], a[27]); SQRADDAC(a[5], a[26]); SQRADDAC(a[6], a[25]); SQRADDAC(a[7], a[24]); SQRADDAC(a[8], a[23]); SQRADDAC(a[9], a[22]); SQRADDAC(a[10], a[21]); SQRADDAC(a[11], a[20]); SQRADDAC(a[12], a[19]); SQRADDAC(a[13], a[18]); SQRADDAC(a[14], a[17]); SQRADDAC(a[15], a[16]); SQRADDDB;
+ COMBA_STORE(b[31]);
+
+ /* output 32 */
+ CARRY_FORWARD;
+ SQRADDSC(a[1], a[31]); SQRADDAC(a[2], a[30]); SQRADDAC(a[3], a[29]); SQRADDAC(a[4], a[28]); SQRADDAC(a[5], a[27]); SQRADDAC(a[6], a[26]); SQRADDAC(a[7], a[25]); SQRADDAC(a[8], a[24]); SQRADDAC(a[9], a[23]); SQRADDAC(a[10], a[22]); SQRADDAC(a[11], a[21]); SQRADDAC(a[12], a[20]); SQRADDAC(a[13], a[19]); SQRADDAC(a[14], a[18]); SQRADDAC(a[15], a[17]); SQRADDDB; SQRADD(a[16], a[16]);
+ COMBA_STORE(b[32]);
+
+ /* output 33 */
+ CARRY_FORWARD;
+ SQRADDSC(a[2], a[31]); SQRADDAC(a[3], a[30]); SQRADDAC(a[4], a[29]); SQRADDAC(a[5], a[28]); SQRADDAC(a[6], a[27]); SQRADDAC(a[7], a[26]); SQRADDAC(a[8], a[25]); SQRADDAC(a[9], a[24]); SQRADDAC(a[10], a[23]); SQRADDAC(a[11], a[22]); SQRADDAC(a[12], a[21]); SQRADDAC(a[13], a[20]); SQRADDAC(a[14], a[19]); SQRADDAC(a[15], a[18]); SQRADDAC(a[16], a[17]); SQRADDDB;
+ COMBA_STORE(b[33]);
+
+ /* output 34 */
+ CARRY_FORWARD;
+ SQRADDSC(a[3], a[31]); SQRADDAC(a[4], a[30]); SQRADDAC(a[5], a[29]); SQRADDAC(a[6], a[28]); SQRADDAC(a[7], a[27]); SQRADDAC(a[8], a[26]); SQRADDAC(a[9], a[25]); SQRADDAC(a[10], a[24]); SQRADDAC(a[11], a[23]); SQRADDAC(a[12], a[22]); SQRADDAC(a[13], a[21]); SQRADDAC(a[14], a[20]); SQRADDAC(a[15], a[19]); SQRADDAC(a[16], a[18]); SQRADDDB; SQRADD(a[17], a[17]);
+ COMBA_STORE(b[34]);
+
+ /* output 35 */
+ CARRY_FORWARD;
+ SQRADDSC(a[4], a[31]); SQRADDAC(a[5], a[30]); SQRADDAC(a[6], a[29]); SQRADDAC(a[7], a[28]); SQRADDAC(a[8], a[27]); SQRADDAC(a[9], a[26]); SQRADDAC(a[10], a[25]); SQRADDAC(a[11], a[24]); SQRADDAC(a[12], a[23]); SQRADDAC(a[13], a[22]); SQRADDAC(a[14], a[21]); SQRADDAC(a[15], a[20]); SQRADDAC(a[16], a[19]); SQRADDAC(a[17], a[18]); SQRADDDB;
+ COMBA_STORE(b[35]);
+
+ /* output 36 */
+ CARRY_FORWARD;
+ SQRADDSC(a[5], a[31]); SQRADDAC(a[6], a[30]); SQRADDAC(a[7], a[29]); SQRADDAC(a[8], a[28]); SQRADDAC(a[9], a[27]); SQRADDAC(a[10], a[26]); SQRADDAC(a[11], a[25]); SQRADDAC(a[12], a[24]); SQRADDAC(a[13], a[23]); SQRADDAC(a[14], a[22]); SQRADDAC(a[15], a[21]); SQRADDAC(a[16], a[20]); SQRADDAC(a[17], a[19]); SQRADDDB; SQRADD(a[18], a[18]);
+ COMBA_STORE(b[36]);
+
+ /* output 37 */
+ CARRY_FORWARD;
+ SQRADDSC(a[6], a[31]); SQRADDAC(a[7], a[30]); SQRADDAC(a[8], a[29]); SQRADDAC(a[9], a[28]); SQRADDAC(a[10], a[27]); SQRADDAC(a[11], a[26]); SQRADDAC(a[12], a[25]); SQRADDAC(a[13], a[24]); SQRADDAC(a[14], a[23]); SQRADDAC(a[15], a[22]); SQRADDAC(a[16], a[21]); SQRADDAC(a[17], a[20]); SQRADDAC(a[18], a[19]); SQRADDDB;
+ COMBA_STORE(b[37]);
+
+ /* output 38 */
+ CARRY_FORWARD;
+ SQRADDSC(a[7], a[31]); SQRADDAC(a[8], a[30]); SQRADDAC(a[9], a[29]); SQRADDAC(a[10], a[28]); SQRADDAC(a[11], a[27]); SQRADDAC(a[12], a[26]); SQRADDAC(a[13], a[25]); SQRADDAC(a[14], a[24]); SQRADDAC(a[15], a[23]); SQRADDAC(a[16], a[22]); SQRADDAC(a[17], a[21]); SQRADDAC(a[18], a[20]); SQRADDDB; SQRADD(a[19], a[19]);
+ COMBA_STORE(b[38]);
+
+ /* output 39 */
+ CARRY_FORWARD;
+ SQRADDSC(a[8], a[31]); SQRADDAC(a[9], a[30]); SQRADDAC(a[10], a[29]); SQRADDAC(a[11], a[28]); SQRADDAC(a[12], a[27]); SQRADDAC(a[13], a[26]); SQRADDAC(a[14], a[25]); SQRADDAC(a[15], a[24]); SQRADDAC(a[16], a[23]); SQRADDAC(a[17], a[22]); SQRADDAC(a[18], a[21]); SQRADDAC(a[19], a[20]); SQRADDDB;
+ COMBA_STORE(b[39]);
+
+ /* output 40 */
+ CARRY_FORWARD;
+ SQRADDSC(a[9], a[31]); SQRADDAC(a[10], a[30]); SQRADDAC(a[11], a[29]); SQRADDAC(a[12], a[28]); SQRADDAC(a[13], a[27]); SQRADDAC(a[14], a[26]); SQRADDAC(a[15], a[25]); SQRADDAC(a[16], a[24]); SQRADDAC(a[17], a[23]); SQRADDAC(a[18], a[22]); SQRADDAC(a[19], a[21]); SQRADDDB; SQRADD(a[20], a[20]);
+ COMBA_STORE(b[40]);
+
+ /* output 41 */
+ CARRY_FORWARD;
+ SQRADDSC(a[10], a[31]); SQRADDAC(a[11], a[30]); SQRADDAC(a[12], a[29]); SQRADDAC(a[13], a[28]); SQRADDAC(a[14], a[27]); SQRADDAC(a[15], a[26]); SQRADDAC(a[16], a[25]); SQRADDAC(a[17], a[24]); SQRADDAC(a[18], a[23]); SQRADDAC(a[19], a[22]); SQRADDAC(a[20], a[21]); SQRADDDB;
+ COMBA_STORE(b[41]);
+
+ /* output 42 */
+ CARRY_FORWARD;
+ SQRADDSC(a[11], a[31]); SQRADDAC(a[12], a[30]); SQRADDAC(a[13], a[29]); SQRADDAC(a[14], a[28]); SQRADDAC(a[15], a[27]); SQRADDAC(a[16], a[26]); SQRADDAC(a[17], a[25]); SQRADDAC(a[18], a[24]); SQRADDAC(a[19], a[23]); SQRADDAC(a[20], a[22]); SQRADDDB; SQRADD(a[21], a[21]);
+ COMBA_STORE(b[42]);
+
+ /* output 43 */
+ CARRY_FORWARD;
+ SQRADDSC(a[12], a[31]); SQRADDAC(a[13], a[30]); SQRADDAC(a[14], a[29]); SQRADDAC(a[15], a[28]); SQRADDAC(a[16], a[27]); SQRADDAC(a[17], a[26]); SQRADDAC(a[18], a[25]); SQRADDAC(a[19], a[24]); SQRADDAC(a[20], a[23]); SQRADDAC(a[21], a[22]); SQRADDDB;
+ COMBA_STORE(b[43]);
+
+ /* output 44 */
+ CARRY_FORWARD;
+ SQRADDSC(a[13], a[31]); SQRADDAC(a[14], a[30]); SQRADDAC(a[15], a[29]); SQRADDAC(a[16], a[28]); SQRADDAC(a[17], a[27]); SQRADDAC(a[18], a[26]); SQRADDAC(a[19], a[25]); SQRADDAC(a[20], a[24]); SQRADDAC(a[21], a[23]); SQRADDDB; SQRADD(a[22], a[22]);
+ COMBA_STORE(b[44]);
+
+ /* output 45 */
+ CARRY_FORWARD;
+ SQRADDSC(a[14], a[31]); SQRADDAC(a[15], a[30]); SQRADDAC(a[16], a[29]); SQRADDAC(a[17], a[28]); SQRADDAC(a[18], a[27]); SQRADDAC(a[19], a[26]); SQRADDAC(a[20], a[25]); SQRADDAC(a[21], a[24]); SQRADDAC(a[22], a[23]); SQRADDDB;
+ COMBA_STORE(b[45]);
+
+ /* output 46 */
+ CARRY_FORWARD;
+ SQRADDSC(a[15], a[31]); SQRADDAC(a[16], a[30]); SQRADDAC(a[17], a[29]); SQRADDAC(a[18], a[28]); SQRADDAC(a[19], a[27]); SQRADDAC(a[20], a[26]); SQRADDAC(a[21], a[25]); SQRADDAC(a[22], a[24]); SQRADDDB; SQRADD(a[23], a[23]);
+ COMBA_STORE(b[46]);
+
+ /* output 47 */
+ CARRY_FORWARD;
+ SQRADDSC(a[16], a[31]); SQRADDAC(a[17], a[30]); SQRADDAC(a[18], a[29]); SQRADDAC(a[19], a[28]); SQRADDAC(a[20], a[27]); SQRADDAC(a[21], a[26]); SQRADDAC(a[22], a[25]); SQRADDAC(a[23], a[24]); SQRADDDB;
+ COMBA_STORE(b[47]);
+
+ /* output 48 */
+ CARRY_FORWARD;
+ SQRADDSC(a[17], a[31]); SQRADDAC(a[18], a[30]); SQRADDAC(a[19], a[29]); SQRADDAC(a[20], a[28]); SQRADDAC(a[21], a[27]); SQRADDAC(a[22], a[26]); SQRADDAC(a[23], a[25]); SQRADDDB; SQRADD(a[24], a[24]);
+ COMBA_STORE(b[48]);
+
+ /* output 49 */
+ CARRY_FORWARD;
+ SQRADDSC(a[18], a[31]); SQRADDAC(a[19], a[30]); SQRADDAC(a[20], a[29]); SQRADDAC(a[21], a[28]); SQRADDAC(a[22], a[27]); SQRADDAC(a[23], a[26]); SQRADDAC(a[24], a[25]); SQRADDDB;
+ COMBA_STORE(b[49]);
+
+ /* output 50 */
+ CARRY_FORWARD;
+ SQRADDSC(a[19], a[31]); SQRADDAC(a[20], a[30]); SQRADDAC(a[21], a[29]); SQRADDAC(a[22], a[28]); SQRADDAC(a[23], a[27]); SQRADDAC(a[24], a[26]); SQRADDDB; SQRADD(a[25], a[25]);
+ COMBA_STORE(b[50]);
+
+ /* output 51 */
+ CARRY_FORWARD;
+ SQRADDSC(a[20], a[31]); SQRADDAC(a[21], a[30]); SQRADDAC(a[22], a[29]); SQRADDAC(a[23], a[28]); SQRADDAC(a[24], a[27]); SQRADDAC(a[25], a[26]); SQRADDDB;
+ COMBA_STORE(b[51]);
+
+ /* output 52 */
+ CARRY_FORWARD;
+ SQRADDSC(a[21], a[31]); SQRADDAC(a[22], a[30]); SQRADDAC(a[23], a[29]); SQRADDAC(a[24], a[28]); SQRADDAC(a[25], a[27]); SQRADDDB; SQRADD(a[26], a[26]);
+ COMBA_STORE(b[52]);
+
+ /* output 53 */
+ CARRY_FORWARD;
+ SQRADDSC(a[22], a[31]); SQRADDAC(a[23], a[30]); SQRADDAC(a[24], a[29]); SQRADDAC(a[25], a[28]); SQRADDAC(a[26], a[27]); SQRADDDB;
+ COMBA_STORE(b[53]);
+
+ /* output 54 */
+ CARRY_FORWARD;
+ SQRADDSC(a[23], a[31]); SQRADDAC(a[24], a[30]); SQRADDAC(a[25], a[29]); SQRADDAC(a[26], a[28]); SQRADDDB; SQRADD(a[27], a[27]);
+ COMBA_STORE(b[54]);
+
+ /* output 55 */
+ CARRY_FORWARD;
+ SQRADDSC(a[24], a[31]); SQRADDAC(a[25], a[30]); SQRADDAC(a[26], a[29]); SQRADDAC(a[27], a[28]); SQRADDDB;
+ COMBA_STORE(b[55]);
+
+ /* output 56 */
+ CARRY_FORWARD;
+ SQRADDSC(a[25], a[31]); SQRADDAC(a[26], a[30]); SQRADDAC(a[27], a[29]); SQRADDDB; SQRADD(a[28], a[28]);
+ COMBA_STORE(b[56]);
+
+ /* output 57 */
+ CARRY_FORWARD;
+ SQRADDSC(a[26], a[31]); SQRADDAC(a[27], a[30]); SQRADDAC(a[28], a[29]); SQRADDDB;
+ COMBA_STORE(b[57]);
+
+ /* output 58 */
+ CARRY_FORWARD;
+ SQRADD2(a[27], a[31]); SQRADD2(a[28], a[30]); SQRADD(a[29], a[29]);
+ COMBA_STORE(b[58]);
+
+ /* output 59 */
+ CARRY_FORWARD;
+ SQRADD2(a[28], a[31]); SQRADD2(a[29], a[30]);
+ COMBA_STORE(b[59]);
+
+ /* output 60 */
+ CARRY_FORWARD;
+ SQRADD2(a[29], a[31]); SQRADD(a[30], a[30]);
+ COMBA_STORE(b[60]);
+
+ /* output 61 */
+ CARRY_FORWARD;
+ SQRADD2(a[30], a[31]);
+ COMBA_STORE(b[61]);
+
+ /* output 62 */
+ CARRY_FORWARD;
+ SQRADD(a[31], a[31]);
+ COMBA_STORE(b[62]);
+ COMBA_STORE2(b[63]);
+ COMBA_FINI;
+
+ B->used = 64;
+ B->sign = PSTM_ZPOS;
+ memcpy(B->dp, b, 64 * sizeof(pstm_digit));
+ pstm_clamp(B);
+ return PSTM_OKAY;
+}
+#endif /* USE_2048_KEY_SPEED_OPTIMIZATIONS */
+
+/******************************************************************************/
+/*
+ */
+int32 pstm_sqr_comba(psPool_t *pool, pstm_int *A, pstm_int *B, pstm_digit *paD,
+ uint32 paDlen)
+{
+#ifdef USE_1024_KEY_SPEED_OPTIMIZATIONS
+ if (A->used == 16) {
+ return pstm_sqr_comba16(A, B);
+ } else {
+#ifdef USE_2048_KEY_SPEED_OPTIMIZATIONS
+ if (A->used == 32) {
+ return pstm_sqr_comba32(A, B);
+ }
+#endif /* USE_2048_KEY_SPEED_OPTIMIZATIONS */
+ return pstm_sqr_comba_gen(pool, A, B, paD, paDlen);
+ }
+#else
+#ifdef USE_2048_KEY_SPEED_OPTIMIZATIONS
+ if (A->used == 32) {
+ return pstm_sqr_comba32(A, B);
+ }
+#endif /* USE_2048_KEY_SPEED_OPTIMIZATIONS */
+ return pstm_sqr_comba_gen(pool, A, B, paD, paDlen);
+#endif
+}
+
+#endif /* DISABLE_PSTM */
+/******************************************************************************/
generated by cgit v1.1 at 2024-12-27 10:18:44 +0000