forked from M-Labs/artiq
31 lines
541 B
C
31 lines
541 B
C
|
#include <generated/csr.h>
|
||
|
|
#include <irq.h>
|
||
|
|
#include <uart.h>
|
||
|
|
|
||
|
|
static void isr(void)
|
||
|
|
{
|
||
|
|
unsigned int irqs;
|
||
|
|
|
||
|
|
irqs = irq_pending() & irq_getmask();
|
||
|
|
|
||
|
|
if(irqs & (1 << UART_INTERRUPT))
|
||
|
|
uart_isr();
|
||
|
|
}
|
||
|
|
|
||
|
|
#define EXTERNAL_IRQ 0x800
|
||
|
|
#define SYSTEM_CALL 0xc00
|
||
|
|
|
||
|
|
void exception_handler(unsigned long vect, unsigned long *sp);
|
||
|
|
void exception_handler(unsigned long vect, unsigned long *sp)
|
||
|
|
{
|
||
|
|
vect &= 0xf00;
|
||
|
|
if(vect == SYSTEM_CALL) {
|
||
|
|
puts("scall");
|
||
|
|
} else if(vect == EXTERNAL_IRQ) {
|
||
|
|
isr();
|
||
|
|
} else {
|
||
|
|
/* Unhandled exception */
|
||
|
|
for(;;);
|
||
|
|
}
|
||
|
|
}
|