cl /O2 -c bn_asm.c (cl.exe version 19.12.25830.2 never finish compiling)

bn_asm.c

/* $OpenBSD: bn_asm.c,v 1.15 2017/05/02 03:59:44 deraadt Exp $ */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 *
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 *
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 *
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#define BN_ULLONG	unsigned long long
#define BN_ULONG	unsigned int
#define BN_MASK2	(0xffffffffL)
#define BN_BITS2	32

#define Lw(t)    (((BN_ULONG)(t))&BN_MASK2)
#define Hw(t)    (((BN_ULONG)((t)>>BN_BITS2))&BN_MASK2)

/* mul_add_c(a,b,c0,c1,c2)  -- c+=a*b for three word number c=(c2,c1,c0) */
/* mul_add_c2(a,b,c0,c1,c2) -- c+=2*a*b for three word number c=(c2,c1,c0) */
/* sqr_add_c(a,i,c0,c1,c2)  -- c+=a[i]^2 for three word number c=(c2,c1,c0) */
/* sqr_add_c2(a,i,c0,c1,c2) -- c+=2*a[i]*a[j] for three word number c=(c2,c1,c0) */

/*
 * Keep in mind that additions to multiplication result can not
 * overflow, because its high half cannot be all-ones.
 */
#define mul_add_c(a,b,c0,c1,c2)		do {	\
	BN_ULONG hi;				\
	BN_ULLONG t = (BN_ULLONG)(a)*(b);	\
	t += c0;		/* no carry */	\
	c0 = (BN_ULONG)Lw(t);			\
	hi = (BN_ULONG)Hw(t);			\
	c1 = (c1+hi)&BN_MASK2; if (c1<hi) c2++;	\
	} while(0)

#define mul_add_c2(a,b,c0,c1,c2)	do {	\
	BN_ULONG hi;				\
	BN_ULLONG t = (BN_ULLONG)(a)*(b);	\
	BN_ULLONG tt = t+c0;	/* no carry */	\
	c0 = (BN_ULONG)Lw(tt);			\
	hi = (BN_ULONG)Hw(tt);			\
	c1 = (c1+hi)&BN_MASK2; if (c1<hi) c2++;	\
	t += c0;		/* no carry */	\
	c0 = (BN_ULONG)Lw(t);			\
	hi = (BN_ULONG)Hw(t);			\
	c1 = (c1+hi)&BN_MASK2; if (c1<hi) c2++;	\
	} while(0)

#define sqr_add_c(a,i,c0,c1,c2)		do {	\
	BN_ULONG hi;				\
	BN_ULLONG t = (BN_ULLONG)a[i]*a[i];	\
	t += c0;		/* no carry */	\
	c0 = (BN_ULONG)Lw(t);			\
	hi = (BN_ULONG)Hw(t);			\
	c1 = (c1+hi)&BN_MASK2; if (c1<hi) c2++;	\
	} while(0)

#define sqr_add_c2(a,i,j,c0,c1,c2) \
	mul_add_c2((a)[i],(a)[j],c0,c1,c2)


void
bn_mul_comba8(BN_ULONG *r, BN_ULONG *a, BN_ULONG *b)
{
	BN_ULONG c1, c2, c3;

	c1 = 0;
	c2 = 0;
	c3 = 0;
	mul_add_c(a[0], b[0], c1, c2, c3);
	r[0] = c1;
	c1 = 0;
	mul_add_c(a[0], b[1], c2, c3, c1);
	mul_add_c(a[1], b[0], c2, c3, c1);
	r[1] = c2;
	c2 = 0;
	mul_add_c(a[2], b[0], c3, c1, c2);
	mul_add_c(a[1], b[1], c3, c1, c2);
	mul_add_c(a[0], b[2], c3, c1, c2);
	r[2] = c3;
	c3 = 0;
	mul_add_c(a[0], b[3], c1, c2, c3);
	mul_add_c(a[1], b[2], c1, c2, c3);
	mul_add_c(a[2], b[1], c1, c2, c3);
	mul_add_c(a[3], b[0], c1, c2, c3);
	r[3] = c1;
	c1 = 0;
	mul_add_c(a[4], b[0], c2, c3, c1);
	mul_add_c(a[3], b[1], c2, c3, c1);
	mul_add_c(a[2], b[2], c2, c3, c1);
	mul_add_c(a[1], b[3], c2, c3, c1);
	mul_add_c(a[0], b[4], c2, c3, c1);
	r[4] = c2;
	c2 = 0;
	mul_add_c(a[0], b[5], c3, c1, c2);
	mul_add_c(a[1], b[4], c3, c1, c2);
	mul_add_c(a[2], b[3], c3, c1, c2);
	mul_add_c(a[3], b[2], c3, c1, c2);
	mul_add_c(a[4], b[1], c3, c1, c2);
	mul_add_c(a[5], b[0], c3, c1, c2);
	r[5] = c3;
	c3 = 0;
	mul_add_c(a[6], b[0], c1, c2, c3);
	mul_add_c(a[5], b[1], c1, c2, c3);
	mul_add_c(a[4], b[2], c1, c2, c3);
	mul_add_c(a[3], b[3], c1, c2, c3);
	mul_add_c(a[2], b[4], c1, c2, c3);
	mul_add_c(a[1], b[5], c1, c2, c3);
	mul_add_c(a[0], b[6], c1, c2, c3);
	r[6] = c1;
	c1 = 0;
	mul_add_c(a[0], b[7], c2, c3, c1);
	mul_add_c(a[1], b[6], c2, c3, c1);
	mul_add_c(a[2], b[5], c2, c3, c1);
	mul_add_c(a[3], b[4], c2, c3, c1);
	mul_add_c(a[4], b[3], c2, c3, c1);
	mul_add_c(a[5], b[2], c2, c3, c1);
	mul_add_c(a[6], b[1], c2, c3, c1);
	mul_add_c(a[7], b[0], c2, c3, c1);
	r[7] = c2;
	c2 = 0;
	mul_add_c(a[7], b[1], c3, c1, c2);
	mul_add_c(a[6], b[2], c3, c1, c2);
	mul_add_c(a[5], b[3], c3, c1, c2);
	mul_add_c(a[4], b[4], c3, c1, c2);
	mul_add_c(a[3], b[5], c3, c1, c2);
	mul_add_c(a[2], b[6], c3, c1, c2);
	mul_add_c(a[1], b[7], c3, c1, c2);
	r[8] = c3;
	c3 = 0;
	mul_add_c(a[2], b[7], c1, c2, c3);
	mul_add_c(a[3], b[6], c1, c2, c3);
	mul_add_c(a[4], b[5], c1, c2, c3);
	mul_add_c(a[5], b[4], c1, c2, c3);
	mul_add_c(a[6], b[3], c1, c2, c3);
	mul_add_c(a[7], b[2], c1, c2, c3);
	r[9] = c1;
	c1 = 0;
	mul_add_c(a[7], b[3], c2, c3, c1);
	mul_add_c(a[6], b[4], c2, c3, c1);
	mul_add_c(a[5], b[5], c2, c3, c1);
	mul_add_c(a[4], b[6], c2, c3, c1);
	mul_add_c(a[3], b[7], c2, c3, c1);
	r[10] = c2;
	c2 = 0;
	mul_add_c(a[4], b[7], c3, c1, c2);
	mul_add_c(a[5], b[6], c3, c1, c2);
	mul_add_c(a[6], b[5], c3, c1, c2);
	mul_add_c(a[7], b[4], c3, c1, c2);
	r[11] = c3;
	c3 = 0;
	mul_add_c(a[7], b[5], c1, c2, c3);
	mul_add_c(a[6], b[6], c1, c2, c3);
	mul_add_c(a[5], b[7], c1, c2, c3);
	r[12] = c1;
	c1 = 0;
	mul_add_c(a[6], b[7], c2, c3, c1);
	mul_add_c(a[7], b[6], c2, c3, c1);
	r[13] = c2;
	c2 = 0;
	mul_add_c(a[7], b[7], c3, c1, c2);
	r[14] = c3;
	r[15] = c1;
}