mirror of
https://github.com/k3s-io/k3s.git
synced 2024-06-07 19:41:36 +00:00
50 lines
1.2 KiB
Go
50 lines
1.2 KiB
Go
|
// +build arm64,linux
|
||
|
|
|
||
|
|
// Minio Cloud Storage, (C) 2016 Minio, Inc.
|
||
|
|
//
|
||
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
// you may not use this file except in compliance with the License.
|
||
|
|
// You may obtain a copy of the License at
|
||
|
|
//
|
||
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
//
|
||
|
|
// Unless required by applicable law or agreed to in writing, software
|
||
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
// See the License for the specific language governing permissions and
|
||
|
|
// limitations under the License.
|
||
|
|
//
|
||
|
|
|
||
|
|
package sha256
|
||
|
|
|
||
|
|
import (
|
||
|
|
"bytes"
|
||
|
|
"io/ioutil"
|
||
|
|
)
|
||
|
|
|
||
|
|
func cpuid(op uint32) (eax, ebx, ecx, edx uint32) {
|
||
|
|
return 0, 0, 0, 0
|
||
|
|
}
|
||
|
|
|
||
|
|
func cpuidex(op, op2 uint32) (eax, ebx, ecx, edx uint32) {
|
||
|
|
return 0, 0, 0, 0
|
||
|
|
}
|
||
|
|
|
||
|
|
func xgetbv(index uint32) (eax, edx uint32) {
|
||
|
|
return 0, 0
|
||
|
|
}
|
||
|
|
|
||
|
|
// File to check for cpu capabilities.
|
||
|
|
const procCPUInfo = "/proc/cpuinfo"
|
||
|
|
|
||
|
|
// Feature to check for.
|
||
|
|
const sha256Feature = "sha2"
|
||
|
|
|
||
|
|
func haveArmSha() bool {
|
||
|
|
cpuInfo, err := ioutil.ReadFile(procCPUInfo)
|
||
|
|
if err != nil {
|
||
|
|
return false
|
||
|
|
}
|
||
|
|
return bytes.Contains(cpuInfo, []byte(sha256Feature))
|
||
|
|
}
|