You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: cpu_arm64.go
    path of file: ./repos/scan4all/vendor/github.com/icodeface/tls/internal/cpu
    
    the code of the file until where you have to start completion: // Copyright 2017 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package cpu

const CacheLinePadSize = 64

// arm64 doesn't have a 'cpuid' equivalent, so we rely on HWCAP/HWCAP2.
// These are initialized by archauxv in runtime/os_linux_arm64.go.
// These should not be changed after they are initialized.
var HWCap uint
var HWCap2 uint

// HWCAP/HWCAP2 bits. These are exposed by Linux.
const (
	hwcap_FP       = 1 << 0
	hwcap_ASIMD    = 1 << 1
	hwcap_EVTSTRM  = 1 << 2
	hwcap_AES      = 1 << 3
	hwcap_PMULL    = 1 << 4
	hwcap_SHA1     = 1 << 5
	hwcap_SHA2     = 1 << 6
	hwcap_CRC32    = 1 << 7
	hwcap_ATOMICS  = 1 << 8
	hwcap_FPHP     = 1 << 9
	hwcap_ASIMDHP  = 1 << 10
	hwcap_CPUID    = 1 << 11
	hwcap_ASI
    
func doinit() {
	options = []option{
		{Name: "evtstrm", Feature: &ARM64.HasEVTSTRM},
		{Name: "aes", Feature: &ARM64.HasAES},
		{Name: "pmull", Feature: &ARM64.HasPMULL},
		{Name: "sha1", Feature: &ARM64.HasSHA1},
		{Name: "sha2", Feature: &ARM64.HasSHA2},
		{Name: "crc32", Feature: &ARM64.HasCRC32},
		{Name: "atomics", Feature: &ARM64.HasATOMICS},
		{Name: "fphp", Feature: &ARM64.HasFPHP},
		{Name: "asimdhp", Feature: &ARM64.HasASIMDHP},
		{Name: "cpuid", Feature: &ARM64.HasCPUID},
		{Name: "asimdrdm", Feature: &ARM64.HasASIMDRDM},
		{Name: "jscvt", Feature: &ARM64.HasJSCVT},
		{Name: "fcma", Feature: &ARM64.HasFCMA},
		{Name: "lrcpc", Feature: &ARM64.HasLRCPC},
		{Name: "dcpop", Feature: &ARM64.HasDCPOP},
		{Name: "sha3", Feature: &ARM64.HasSHA3},
		{Name: "sm3", Feature: &ARM64.HasSM3},
		{Name: "sm4", Feature: &ARM64.HasSM4},
		{Name: "asimddp", Feature: &ARM64.HasASIMDDP},
		{Name: "sha512", Feature: &ARM64.HasSHA512},
		{Name: "sve", Feature: &ARM64.HasSVE},
		{Name: "asimdfhm", Feature: &ARM64.HasASIMDFHM},

		// These capabilities should always be enabled on arm64:
		{Name: "fp", Feature: &ARM64.HasFP, Required: true},
		{Name: "asimd", Feature: &ARM64.HasASIMD, Required: true},
	}

	// HWCAP feature bits
	ARM64.HasFP = isSet(HWCap, hwcap_FP)
	ARM64.HasASIMD = isSet(HWCap, hwcap_ASIMD)
	ARM64.HasEVTSTRM = isSet(HWCap, hwcap_EVTSTRM)
	ARM64.HasAES = isSet(HWCap, hwcap_AES)
	ARM64.HasPMULL = isSet(HWCap, hwcap_PMULL)
	ARM64.HasSHA1 = isSet(HWCap, hwcap_SHA1)
	ARM64.HasSHA2 = isSet(HWCap, hwcap_SHA2)
	ARM64.HasCRC32 = isSet(HWCap, hwcap_CRC32)
	ARM64.HasATOMICS = isSet(HWCap, hwcap_ATOMICS)
	ARM64.HasFPHP = isSet(HWCap, hwcap_FPHP)
	ARM64.HasASIMDHP = isSet(HWCap, hwcap_ASIMDHP)
	ARM64.HasCPUID = isSet(HWCap, hwcap_CPUID)
	ARM64.HasASIMDRDM = isSet(HWCap, hwcap_ASIMDRDM)
	ARM64.HasJSCVT = isSet(HWCap, hwcap_JSCVT)
	ARM64.HasFCMA = isSet(HWCap, hwcap_FCMA)
	ARM64.HasLRCPC = isSet(HWCap, hwcap_LRCPC)
	ARM64.HasDCPOP = isSet(HWCap, hwcap_DCPOP)
	ARM64.HasSHA3 = isSet(HWCap, hwcap_SHA3)
	ARM64.HasSM3 = isSet(HWCap, hwcap_SM3)
	ARM64.HasSM4 = isSet(HWCap, hwcap_SM4)
	ARM64.HasASIMDDP = isSet(HWCap, hwcap_ASIMDDP)
	ARM64.HasSHA512 = isSet(HWCap, hwcap_SHA512)
	ARM64.HasSVE = isSet(HWCap, hwcap_SVE)
	ARM64.HasASIMDFHM = isSet(HWCap, hwcap_ASIMDFHM)
}