RetroZilla/security/nss/lib/freebl/mpi/mpi_amd64.c

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2018-05-04 16:08:28 +02:00
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
2015-10-21 05:03:22 +02:00
#ifndef MPI_AMD64
#error This file only works on AMD64 platforms.
#endif
#include <mpi-priv.h>
/*
* MPI glue
*
*/
/* Presently, this is only used by the Montgomery arithmetic code. */
/* c += a * b */
void MPI_ASM_DECL s_mpv_mul_d_add_prop(const mp_digit *a, mp_size a_len,
mp_digit b, mp_digit *c)
{
mp_digit w;
mp_digit d;
d = s_mpv_mul_add_vec64(c, a, a_len, b);
c += a_len;
while (d) {
w = c[0] + d;
d = (w < c[0] || w < d);
*c++ = w;
}
}