1 /* Copyright (c) 2018, Google Inc.
2 * Copyright (c) 2020, Arm Ltd.
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
15
16 #include "internal.h"
17
18 #if defined(OPENSSL_AARCH64) && defined(OPENSSL_WINDOWS) && \
19 !defined(OPENSSL_STATIC_ARMCAP)
20
21 #include <windows.h>
22
23 #include <openssl/arm_arch.h>
24
25
OPENSSL_cpuid_setup(void)26 void OPENSSL_cpuid_setup(void) {
27 // We do not need to check for the presence of NEON, as Armv8-A always has it
28 OPENSSL_armcap_P |= ARMV7_NEON;
29
30 if (IsProcessorFeaturePresent(PF_ARM_V8_CRYPTO_INSTRUCTIONS_AVAILABLE)) {
31 // These are all covered by one call in Windows
32 OPENSSL_armcap_P |= ARMV8_AES;
33 OPENSSL_armcap_P |= ARMV8_PMULL;
34 OPENSSL_armcap_P |= ARMV8_SHA1;
35 OPENSSL_armcap_P |= ARMV8_SHA256;
36 }
37 // As of writing, Windows does not have a |PF_*| value for ARMv8.2 SHA-512
38 // extensions. When it does, add it here.
39 }
40
41 #endif // OPENSSL_AARCH64 && OPENSSL_WINDOWS && !OPENSSL_STATIC_ARMCAP
42