int request_irq(int irqno,void (*handler)(void))
{
if (irqno < 0 || irqno > 63){
return -1;
}
if (irqno < 32){
VIC0VECTADDR[irqno] = (unsigned int)handler;
set_1(VIC0INTENABLE,irqno);
}else{
irqno = irqno - 32;
VIC1VECTADDR[irqno] = (unsigned int)handler;
set_1(VIC1INTENABLE,irqno);
}
__asm__ __volatile__(
"mrs r0,cpsr\n\t"
"bic r0,r0,#0x80\n\t"
"msr cpsr,r0\n\t"
:
:
:"r0"
);
return 0;
}
int main()
{
int n,i,r;
printf("Enter number and index:");
scanf("%d",&n);
scanf("%d",&i);
printf("\n Given number");
display(n);
printf("\t Decimal Equivalant: %d",n);
printf("\n Bit %d set to 1:",i);
r=set_1(n,i);
display(r);
printf("\t Decimal Equivalant: %d",r);
printf("\n Bit %d set to 0:",i);
r=set_0(n,i);
display(r);
printf("\t Decimal Equivalant: %d",r);
printf("\n Toggled Bit %d:",i);
r=toggle(n,i);
display(r);
printf("\t Decimal Equivalant: %d",r);
printf("\n Toggled Except Bit %d:",i);
r=toggle_except(n,i);
display(r);
printf("\t Decimal Equivalant: %d",r);
printf("\n Right Rotate:");
r=rotate_right(n);
display(r);
printf("\t Decimal Equivalant: %d",r);
printf("\n Left Rotate:");
r=rotate_left(n);
display(r);
printf("\t Decimal Equivalant: %d",r);
printf("\n Swap Nibble: ");
r=swap(n);
display(r);
printf("\t Decimal Equivalant: %d",r);
return 0;
}
