ref: bfe9da47cfa2f51ebef78c59332b5ba2deba306d
dir: /third_party/boringssl/src/crypto/cpu-aarch64-win.c/
/* Copyright (c) 2018, Google Inc.
* Copyright (c) 2020, Arm Ltd.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
#include <openssl/cpu.h>
#if defined(OPENSSL_AARCH64) && defined(OPENSSL_WINDOWS) && \
!defined(OPENSSL_STATIC_ARMCAP)
#include <windows.h>
#include <openssl/arm_arch.h>
#include "internal.h"
extern uint32_t OPENSSL_armcap_P;
void OPENSSL_cpuid_setup(void) {
// We do not need to check for the presence of NEON, as Armv8-A always has it
OPENSSL_armcap_P |= ARMV7_NEON;
if (IsProcessorFeaturePresent(PF_ARM_V8_CRYPTO_INSTRUCTIONS_AVAILABLE)) {
// These are all covered by one call in Windows
OPENSSL_armcap_P |= ARMV8_AES;
OPENSSL_armcap_P |= ARMV8_PMULL;
OPENSSL_armcap_P |= ARMV8_SHA1;
OPENSSL_armcap_P |= ARMV8_SHA256;
}
}
#endif