mirror of https://github.com/facebook/rocksdb.git
52 lines
1.8 KiB
C
52 lines
1.8 KiB
C
// Copyright (c) 2018, Arm Limited and affiliates. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#ifndef UTIL_CRC32C_ARM64_H
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#define UTIL_CRC32C_ARM64_H
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#include <cinttypes>
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#include <cstddef>
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#if defined(__aarch64__) || defined(__AARCH64__)
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#ifdef __ARM_FEATURE_CRC32
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#define HAVE_ARM64_CRC
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#include <arm_acle.h>
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#define crc32c_u8(crc, v) __crc32cb(crc, v)
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#define crc32c_u16(crc, v) __crc32ch(crc, v)
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#define crc32c_u32(crc, v) __crc32cw(crc, v)
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#define crc32c_u64(crc, v) __crc32cd(crc, v)
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// clang-format off
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#define PREF4X64L1(buffer, PREF_OFFSET, ITR) \
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__asm__("PRFM PLDL1KEEP, [%x[v],%[c]]" ::[v] "r"(buffer), \
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[c] "I"((PREF_OFFSET) + ((ITR) + 0) * 64)); \
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__asm__("PRFM PLDL1KEEP, [%x[v],%[c]]" ::[v] "r"(buffer), \
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[c] "I"((PREF_OFFSET) + ((ITR) + 1) * 64)); \
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__asm__("PRFM PLDL1KEEP, [%x[v],%[c]]" ::[v] "r"(buffer), \
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[c] "I"((PREF_OFFSET) + ((ITR) + 2) * 64)); \
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__asm__("PRFM PLDL1KEEP, [%x[v],%[c]]" ::[v] "r"(buffer), \
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[c] "I"((PREF_OFFSET) + ((ITR) + 3) * 64));
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// clang-format on
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#define PREF1KL1(buffer, PREF_OFFSET) \
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PREF4X64L1(buffer, (PREF_OFFSET), 0) \
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PREF4X64L1(buffer, (PREF_OFFSET), 4) \
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PREF4X64L1(buffer, (PREF_OFFSET), 8) \
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PREF4X64L1(buffer, (PREF_OFFSET), 12)
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uint32_t crc32c_arm64(uint32_t crc, unsigned char const *data, size_t len);
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uint32_t crc32c_runtime_check(void);
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bool crc32c_pmull_runtime_check(void);
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#ifdef __ARM_FEATURE_CRYPTO
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#define HAVE_ARM64_CRYPTO
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#include <arm_neon.h>
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#endif // __ARM_FEATURE_CRYPTO
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#endif // __ARM_FEATURE_CRC32
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#endif // defined(__aarch64__) || defined(__AARCH64__)
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#endif
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