lure/internal/cpu/cpu.go

55 lines
1.4 KiB
Go

/*
* LURE - Linux User REpository
* Copyright (C) 2023 Arsen Musayelyan
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package cpu
import (
"os"
"runtime"
"strings"
"golang.org/x/sys/cpu"
)
// ARMVariant checks which variant of ARM lure is running
// on, by using the same detection method as Go itself
func ARMVariant() string {
armEnv := os.Getenv("LURE_ARM_VARIANT")
// ensure value has "arm" prefix, such as arm5 or arm6
if strings.HasPrefix(armEnv, "arm") {
return armEnv
}
if cpu.ARM.HasVFPv3 {
return "arm7"
} else if cpu.ARM.HasVFP {
return "arm6"
} else {
return "arm5"
}
}
// Arch returns the canonical CPU architecture of the system
func Arch() string {
arch := runtime.GOARCH
if arch == "arm" {
arch = ARMVariant()
}
return arch
}