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// Copyright (c) 2022, Robert Nagy <robert.nagy@gmail.com>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <openssl/cpu.h>
#if defined(OPENSSL_AARCH64) && defined(OPENSSL_OPENBSD) && \
!defined(OPENSSL_STATIC_ARMCAP) && !defined(OPENSSL_NO_ASM)
#include <machine/armreg.h>
#include <machine/cpu.h>
#include <sys/sysctl.h>
#include <openssl/arm_arch.h>
#include "internal.h"
void OPENSSL_cpuid_setup(void) {
int isar0_mib[] = {CTL_MACHDEP, CPU_ID_AA64ISAR0};
uint64_t cpu_id = 0;
size_t len = sizeof(cpu_id);
if (sysctl(isar0_mib, 2, &cpu_id, &len, NULL, 0) < 0) {
return;
}
OPENSSL_armcap_P |= ARMV7_NEON;
if (ID_AA64ISAR0_AES(cpu_id) >= ID_AA64ISAR0_AES_BASE) {
OPENSSL_armcap_P |= ARMV8_AES;
}
if (ID_AA64ISAR0_AES(cpu_id) >= ID_AA64ISAR0_AES_PMULL) {
OPENSSL_armcap_P |= ARMV8_PMULL;
}
if (ID_AA64ISAR0_SHA1(cpu_id) >= ID_AA64ISAR0_SHA1_BASE) {
OPENSSL_armcap_P |= ARMV8_SHA1;
}
if (ID_AA64ISAR0_SHA2(cpu_id) >= ID_AA64ISAR0_SHA2_BASE) {
OPENSSL_armcap_P |= ARMV8_SHA256;
}
if (ID_AA64ISAR0_SHA2(cpu_id) >= ID_AA64ISAR0_SHA2_512) {
OPENSSL_armcap_P |= ARMV8_SHA512;
}
}
#endif // OPENSSL_AARCH64 && OPENSSL_OPENBSD && !OPENSSL_STATIC_ARMCAP