func SetSyscall(s SystemCaller) {
	sys = s
}
SetSyscall sets the Syscall implementation
package sysfs
import (
	"syscall"
)
type SystemCaller interface {
	Syscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err syscall.Errno)
}
type NativeSyscall struct{}
type MockSyscall struct{}
var sys SystemCaller = &NativeSyscall{}