cpu-aarch64-win.c

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/* 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