golang cpu_arm64_linux 代码
文件路径：/src/internal/cpu/cpu_arm64_linux.go
/ Copyright 2020 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.
/go:build arm64 && linux && !android
package cpu
func osInit() {
hwcapInit("linux")
}