Source file src/pkg/vendor/golang.org/x/sys/cpu/cpu_linux_arm64.go

     1	// Copyright 2018 The Go Authors. All rights reserved.
     2	// Use of this source code is governed by a BSD-style
     3	// license that can be found in the LICENSE file.
     4	
     5	package cpu
     6	
     7	const cacheLineSize = 64
     8	
     9	// HWCAP/HWCAP2 bits. These are exposed by Linux.
    10	const (
    11		hwcap_FP       = 1 << 0
    12		hwcap_ASIMD    = 1 << 1
    13		hwcap_EVTSTRM  = 1 << 2
    14		hwcap_AES      = 1 << 3
    15		hwcap_PMULL    = 1 << 4
    16		hwcap_SHA1     = 1 << 5
    17		hwcap_SHA2     = 1 << 6
    18		hwcap_CRC32    = 1 << 7
    19		hwcap_ATOMICS  = 1 << 8
    20		hwcap_FPHP     = 1 << 9
    21		hwcap_ASIMDHP  = 1 << 10
    22		hwcap_CPUID    = 1 << 11
    23		hwcap_ASIMDRDM = 1 << 12
    24		hwcap_JSCVT    = 1 << 13
    25		hwcap_FCMA     = 1 << 14
    26		hwcap_LRCPC    = 1 << 15
    27		hwcap_DCPOP    = 1 << 16
    28		hwcap_SHA3     = 1 << 17
    29		hwcap_SM3      = 1 << 18
    30		hwcap_SM4      = 1 << 19
    31		hwcap_ASIMDDP  = 1 << 20
    32		hwcap_SHA512   = 1 << 21
    33		hwcap_SVE      = 1 << 22
    34		hwcap_ASIMDFHM = 1 << 23
    35	)
    36	
    37	func doinit() {
    38		// HWCAP feature bits
    39		ARM64.HasFP = isSet(hwCap, hwcap_FP)
    40		ARM64.HasASIMD = isSet(hwCap, hwcap_ASIMD)
    41		ARM64.HasEVTSTRM = isSet(hwCap, hwcap_EVTSTRM)
    42		ARM64.HasAES = isSet(hwCap, hwcap_AES)
    43		ARM64.HasPMULL = isSet(hwCap, hwcap_PMULL)
    44		ARM64.HasSHA1 = isSet(hwCap, hwcap_SHA1)
    45		ARM64.HasSHA2 = isSet(hwCap, hwcap_SHA2)
    46		ARM64.HasCRC32 = isSet(hwCap, hwcap_CRC32)
    47		ARM64.HasATOMICS = isSet(hwCap, hwcap_ATOMICS)
    48		ARM64.HasFPHP = isSet(hwCap, hwcap_FPHP)
    49		ARM64.HasASIMDHP = isSet(hwCap, hwcap_ASIMDHP)
    50		ARM64.HasCPUID = isSet(hwCap, hwcap_CPUID)
    51		ARM64.HasASIMDRDM = isSet(hwCap, hwcap_ASIMDRDM)
    52		ARM64.HasJSCVT = isSet(hwCap, hwcap_JSCVT)
    53		ARM64.HasFCMA = isSet(hwCap, hwcap_FCMA)
    54		ARM64.HasLRCPC = isSet(hwCap, hwcap_LRCPC)
    55		ARM64.HasDCPOP = isSet(hwCap, hwcap_DCPOP)
    56		ARM64.HasSHA3 = isSet(hwCap, hwcap_SHA3)
    57		ARM64.HasSM3 = isSet(hwCap, hwcap_SM3)
    58		ARM64.HasSM4 = isSet(hwCap, hwcap_SM4)
    59		ARM64.HasASIMDDP = isSet(hwCap, hwcap_ASIMDDP)
    60		ARM64.HasSHA512 = isSet(hwCap, hwcap_SHA512)
    61		ARM64.HasSVE = isSet(hwCap, hwcap_SVE)
    62		ARM64.HasASIMDFHM = isSet(hwCap, hwcap_ASIMDFHM)
    63	}
    64	
    65	func isSet(hwc uint, value uint) bool {
    66		return hwc&value != 0
    67	}
    68	

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