зеркало из https://github.com/golang/sys.git
72 строки
2.1 KiB
Go
72 строки
2.1 KiB
Go
// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package cpu
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// HWCAP/HWCAP2 bits. These are exposed by Linux.
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const (
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hwcap_FP = 1 << 0
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hwcap_ASIMD = 1 << 1
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hwcap_EVTSTRM = 1 << 2
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hwcap_AES = 1 << 3
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hwcap_PMULL = 1 << 4
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hwcap_SHA1 = 1 << 5
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hwcap_SHA2 = 1 << 6
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hwcap_CRC32 = 1 << 7
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hwcap_ATOMICS = 1 << 8
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hwcap_FPHP = 1 << 9
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hwcap_ASIMDHP = 1 << 10
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hwcap_CPUID = 1 << 11
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hwcap_ASIMDRDM = 1 << 12
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hwcap_JSCVT = 1 << 13
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hwcap_FCMA = 1 << 14
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hwcap_LRCPC = 1 << 15
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hwcap_DCPOP = 1 << 16
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hwcap_SHA3 = 1 << 17
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hwcap_SM3 = 1 << 18
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hwcap_SM4 = 1 << 19
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hwcap_ASIMDDP = 1 << 20
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hwcap_SHA512 = 1 << 21
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hwcap_SVE = 1 << 22
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hwcap_ASIMDFHM = 1 << 23
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)
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func doinit() {
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if err := readHWCAP(); err != nil {
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// failed to read /proc/self/auxv, try reading registers directly
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readARM64Registers()
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return
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}
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// HWCAP feature bits
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ARM64.HasFP = isSet(hwCap, hwcap_FP)
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ARM64.HasASIMD = isSet(hwCap, hwcap_ASIMD)
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ARM64.HasEVTSTRM = isSet(hwCap, hwcap_EVTSTRM)
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ARM64.HasAES = isSet(hwCap, hwcap_AES)
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ARM64.HasPMULL = isSet(hwCap, hwcap_PMULL)
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ARM64.HasSHA1 = isSet(hwCap, hwcap_SHA1)
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ARM64.HasSHA2 = isSet(hwCap, hwcap_SHA2)
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ARM64.HasCRC32 = isSet(hwCap, hwcap_CRC32)
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ARM64.HasATOMICS = isSet(hwCap, hwcap_ATOMICS)
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ARM64.HasFPHP = isSet(hwCap, hwcap_FPHP)
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ARM64.HasASIMDHP = isSet(hwCap, hwcap_ASIMDHP)
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ARM64.HasCPUID = isSet(hwCap, hwcap_CPUID)
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ARM64.HasASIMDRDM = isSet(hwCap, hwcap_ASIMDRDM)
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ARM64.HasJSCVT = isSet(hwCap, hwcap_JSCVT)
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ARM64.HasFCMA = isSet(hwCap, hwcap_FCMA)
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ARM64.HasLRCPC = isSet(hwCap, hwcap_LRCPC)
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ARM64.HasDCPOP = isSet(hwCap, hwcap_DCPOP)
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ARM64.HasSHA3 = isSet(hwCap, hwcap_SHA3)
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ARM64.HasSM3 = isSet(hwCap, hwcap_SM3)
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ARM64.HasSM4 = isSet(hwCap, hwcap_SM4)
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ARM64.HasASIMDDP = isSet(hwCap, hwcap_ASIMDDP)
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ARM64.HasSHA512 = isSet(hwCap, hwcap_SHA512)
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ARM64.HasSVE = isSet(hwCap, hwcap_SVE)
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ARM64.HasASIMDFHM = isSet(hwCap, hwcap_ASIMDFHM)
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}
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func isSet(hwc uint, value uint) bool {
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return hwc&value != 0
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}
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