mirror of
https://github.com/VectorCamp/vectorscan.git
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81 lines
2.4 KiB
C
81 lines
2.4 KiB
C
/*
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* Copyright (c) 2017-2020, Intel Corporation
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* Copyright (c) 2023, VectorCamp PC
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of Intel Corporation nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef AARCH64_CPUID_INLINE_H_
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#define AARCH64_CPUID_INLINE_H_
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#if defined(__linux__)
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#include <sys/auxv.h>
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/* This is to help fix https://github.com/envoyproxy/envoy/pull/29881
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*/
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#if !defined(HWCAP2_SVE2)
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#include <asm/hwcap.h>
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#endif
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#endif
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#include "ue2common.h"
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#include "util/arch/common/cpuid_flags.h"
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static inline
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int check_neon(void) {
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return 1;
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}
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#if defined(__linux__)
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static inline
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int check_sve(void) {
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unsigned long hwcap = getauxval(AT_HWCAP);
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if (hwcap & HWCAP_SVE) {
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return 1;
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}
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return 0;
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}
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static inline
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int check_sve2(void) {
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unsigned long hwcap2 = getauxval(AT_HWCAP2);
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if (hwcap2 & HWCAP2_SVE2) {
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return 1;
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}
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return 0;
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}
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#else
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static inline
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int check_sve(void) {
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return 0;
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}
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static inline
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int check_sve2(void) {
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return 0;
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}
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#endif
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#endif // AARCH64_CPUID_INLINE_H_
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