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/* Copyright (c) 2022, Google Inc.
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
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#include "internal.h"
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#if defined(OPENSSL_AARCH64) && defined(OPENSSL_FREEBSD) && \
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!defined(OPENSSL_STATIC_ARMCAP)
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#include <machine/armreg.h>
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#include <sys/types.h>
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#include <openssl/arm_arch.h>
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extern uint32_t OPENSSL_armcap_P;
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// ID_AA64ISAR0_*_VAL are defined starting FreeBSD 13.0. When FreeBSD
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// 12.x is out of support, these compatibility macros can be removed.
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#ifndef ID_AA64ISAR0_AES_VAL
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#define ID_AA64ISAR0_AES_VAL ID_AA64ISAR0_AES
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#endif
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#ifndef ID_AA64ISAR0_SHA1_VAL
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#define ID_AA64ISAR0_SHA1_VAL ID_AA64ISAR0_SHA1
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#endif
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#ifndef ID_AA64ISAR0_SHA2_VAL
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#define ID_AA64ISAR0_SHA2_VAL ID_AA64ISAR0_SHA2
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#endif
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void OPENSSL_cpuid_setup(void) {
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uint64_t id_aa64isar0 = READ_SPECIALREG(id_aa64isar0_el1);
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OPENSSL_armcap_P |= ARMV7_NEON;
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if (ID_AA64ISAR0_AES_VAL(id_aa64isar0) >= ID_AA64ISAR0_AES_BASE) {
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OPENSSL_armcap_P |= ARMV8_AES;
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}
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if (ID_AA64ISAR0_AES_VAL(id_aa64isar0) >= ID_AA64ISAR0_AES_PMULL) {
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OPENSSL_armcap_P |= ARMV8_PMULL;
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}
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if (ID_AA64ISAR0_SHA1_VAL(id_aa64isar0) >= ID_AA64ISAR0_SHA1_BASE) {
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OPENSSL_armcap_P |= ARMV8_SHA1;
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}
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if (ID_AA64ISAR0_SHA2_VAL(id_aa64isar0) >= ID_AA64ISAR0_SHA2_BASE) {
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OPENSSL_armcap_P |= ARMV8_SHA256;
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}
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if (ID_AA64ISAR0_SHA2_VAL(id_aa64isar0) >= ID_AA64ISAR0_SHA2_512) {
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OPENSSL_armcap_P |= ARMV8_SHA512;
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}
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}
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#endif // OPENSSL_AARCH64 && OPENSSL_FREEBSD && !OPENSSL_STATIC_ARMCAP
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