pcb_t *makeInit() {
// Init the first process
pcb_t *pcb = allocPcb();
pcb->p_pid = 1;
// Processor Status Register
pcb->p_s.cpsr = STATUS_SYS_MODE;
pcb->p_s.cpsr = STATUS_ALL_INT_ENABLE(pcb->p_s.cpsr);
pcb->p_s.cpsr = STATUS_ENABLE_TIMER(pcb->p_s.cpsr);
// System Control Register
pcb->p_s.CP15_Control = CP15_CONTROL_NULL;
// Other registers
pcb->p_s.pc = (memaddr) init;
pcb->p_s.sp = RAM_TOP-FRAMESIZE;
return pcb;
}
void processSet( struct pcb_t *p, memaddr start, int priority){
// Abilita gli interrupt, il Local Timer e la kernel-mode
p->p_s.cpsr = STATUS_ALL_INT_ENABLE(p->p_s.cpsr) | STATUS_SYS_MODE;
// Disabilita la memoria virtuale
p->p_s.CP15_Control = (p->p_s.CP15_Control) & ~(ENABLE_VM);
p->p_s.cpsr = STATUS_ENABLE_TIMER(p->p_s.cpsr);
p->p_s.sp = RAM_TOP - FRAME_SIZE;
// Assegna a PC l'indirizzo della funzione esterna test()
p->p_s.pc = (memaddr) start;
p->priority = priority;
//assegno un pid al processo
p->pid = newpid();
activeProcesses[first->pid-1] = p;
//inserisco il processo dove di competenza
insertProcQ(priority_queue( priority ), p);
}
