void nOS_SwitchContext(void)
{
SAVE_CONTEXT();
nOS_runningThread = nOS_highPrioThread;
RESTORE_CONTEXT();
asm volatile ("ret");
}
void port_reschedule(void)
{
SAVE_CONTEXT();
log_line(running_task->name);
log_string(" --> ");
reschedule();
timer_tick = RR_TIMEOUT_MS;
log_string(running_task->name);
RESTORE_CONTEXT();
/* The RETI instruction enables interrupts. */
__asm__ __volatile__ ("reti \n\t");
}
ISR(TIMER0_COMP_vect, ISR_NAKED) {
SAVE_CONTEXT();
/* Decide if a task change shall occur. We know that
running_task is in the ready list. */
if (0 == timer_tick) {
list_remove_node((Node *) running_task);
list_enqueue(&ready_tasks, (Node *) running_task);
reschedule();
timer_tick = RR_TIMEOUT_MS;
} else {
timer_tick--;
}
RESTORE_CONTEXT();
__asm__ __volatile__ ("reti \n\t");
}
void interruptReturn(void) {
RESTORE_CONTEXT();
asm volatile("reti");
}
