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60 lines
1.7 KiB
C++
60 lines
1.7 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#pragma once
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namespace arrow {
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#if defined(__aarch64__) || defined(__AARCH64__)
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#ifdef __ARM_FEATURE_CRC32
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#define ARROW_HAVE_ARM_CRC
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#include <arm_acle.h>
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#endif
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#endif
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#if defined(__GNUC__) && defined(__linux__) && defined(ARROW_HAVE_ARM_CRC)
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#include <asm/hwcap.h>
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#include <sys/auxv.h>
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#ifndef HWCAP_CRC32
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#define HWCAP_CRC32 (1 << 7)
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#endif
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static inline uint32_t crc32c_runtime_check(void) {
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uint64_t auxv = getauxval(AT_HWCAP);
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return (auxv & HWCAP_CRC32) != 0;
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}
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static inline uint32_t ARMCE_crc32_u8(uint32_t crc, uint8_t v) {
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return __crc32cb(crc, v);
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}
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static inline uint32_t ARMCE_crc32_u16(uint32_t crc, uint16_t v) {
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return __crc32ch(crc, v);
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}
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static inline uint32_t ARMCE_crc32_u32(uint32_t crc, uint32_t v) {
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return __crc32cw(crc, v);
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}
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static inline uint32_t ARMCE_crc32_u64(uint32_t crc, uint64_t v) {
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return __crc32cd(crc, v);
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}
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#endif // defined(__GNUC__) && defined(__linux__) && defined(ARROW_HAVE_ARM_CRC)
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} // namespace arrow
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