security/nss/lib/freebl/mpi/mpi_amd64.c@6474c204b198 (annotated)
security/nss/lib/freebl/mpi/mpi_amd64.c
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | #ifndef MPI_AMD64 |
| michael@0 | 6 | #error This file only works on AMD64 platforms. |
| michael@0 | 7 | #endif |
| michael@0 | 8 | |
| michael@0 | 9 | #include <mpi-priv.h> |
| michael@0 | 10 | |
| michael@0 | 11 | /* |
| michael@0 | 12 | * MPI glue |
| michael@0 | 13 | * |
| michael@0 | 14 | */ |
| michael@0 | 15 | |
| michael@0 | 16 | /* Presently, this is only used by the Montgomery arithmetic code. */ |
| michael@0 | 17 | /* c += a * b */ |
| michael@0 | 18 | void MPI_ASM_DECL s_mpv_mul_d_add_prop(const mp_digit *a, mp_size a_len, |
| michael@0 | 19 | mp_digit b, mp_digit *c) |
| michael@0 | 20 | { |
| michael@0 | 21 | mp_digit w; |
| michael@0 | 22 | mp_digit d; |
| michael@0 | 23 | |
| michael@0 | 24 | d = s_mpv_mul_add_vec64(c, a, a_len, b); |
| michael@0 | 25 | c += a_len; |
| michael@0 | 26 | while (d) { |
| michael@0 | 27 | w = c[0] + d; |
| michael@0 | 28 | d = (w < c[0] || w < d); |
| michael@0 | 29 | *c++ = w; |
| michael@0 | 30 | } |
| michael@0 | 31 | } |
| michael@0 | 32 |
