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1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
4 | |
5 #ifndef MPI_AMD64 | |
6 #error This file only works on AMD64 platforms. | |
7 #endif | |
8 | |
9 #include <mpi-priv.h> | |
10 | |
11 /* | |
12 * MPI glue | |
13 * | |
14 */ | |
15 | |
16 /* Presently, this is only used by the Montgomery arithmetic code. */ | |
17 /* c += a * b */ | |
18 void MPI_ASM_DECL s_mpv_mul_d_add_prop(const mp_digit *a, mp_size a_len, | |
19 mp_digit b, mp_digit *c) | |
20 { | |
21 mp_digit w; | |
22 mp_digit d; | |
23 | |
24 d = s_mpv_mul_add_vec64(c, a, a_len, b); | |
25 c += a_len; | |
26 while (d) { | |
27 w = c[0] + d; | |
28 d = (w < c[0] || w < d); | |
29 *c++ = w; | |
30 } | |
31 } | |
32 | |
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