/src/nss-nspr/nss/lib/freebl/mpi/mpi_amd64.c
Line | Count | Source |
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 |
19 | | s_mpv_mul_d_add_prop(const mp_digit *a, mp_size a_len, |
20 | | mp_digit b, mp_digit *c) |
21 | 75.7M | { |
22 | 75.7M | mp_digit w; |
23 | 75.7M | mp_digit d; |
24 | | |
25 | 75.7M | d = s_mpv_mul_add_vec64(c, a, a_len, b); |
26 | 75.7M | c += a_len; |
27 | 151M | while (d) { |
28 | 75.9M | w = c[0] + d; |
29 | 75.9M | d = (w < c[0] || w < d); |
30 | 75.9M | *c++ = w; |
31 | 75.9M | } |
32 | 75.7M | } |