#[no_mangle]
unsafe extern "C" fn getcontext() {
todo!("getcontext")
}
#[no_mangle]
unsafe extern "C" fn setcontext() {
todo!("setcontext")
}
#[no_mangle]
unsafe extern "C" fn makecontext() {
todo!("makecontext")
}
#[no_mangle]
unsafe extern "C" fn swapcontext() {
todo!("swapcontext")
}