cleanup

earth/cpu_intr.c

@@ -53,23 +53,8 @@ int intr_enable() {
  __asm__ volatile("csrrs %0, mie, %1"
  : "=r"(tmp)
  : "r"(0x080));
- return 0;
-}
 
-int intr_disable() {
- int tmp;
- /* Disable global interrupt */
- __asm__ volatile("csrrc %0, mstatus, %1"
- : "=r"(tmp)
- : "r"(0x00000008UL));
- /* Disable software interrupt */
- __asm__ volatile("csrrc %0, mie, %1"
- : "=r"(tmp)
- : "r"(0x008));
- /* Disable timer interrupt */
- __asm__ volatile("csrrc %0, mie, %1"
- : "=r"(tmp)
- : "r"(0x080));
+ /* Note: intr_disable is similar by using csrrc instead of csrrs */
  return 0;
 }
 

earth/earth.c

@@ -52,7 +52,6 @@ void earth_init() {
  /* Initialize CPU interrupt */
  intr_init();
  earth->intr_enable = intr_enable;
- earth->intr_disable = intr_disable;
  earth->intr_register = intr_register;
  earth->excp_register = excp_register;
  SUCCESS("Finished initializing the CPU interrupts");

earth/earth.h

@@ -13,7 +13,6 @@ void mmu_init();
 
 typedef void (*handler_t)(int);
 int intr_enable();
-int intr_disable();
 int intr_register(handler_t handler);
 int excp_register(handler_t handler);
 

library/egos.h

@@ -6,7 +6,6 @@
 struct earth {
  /* CPU interface */
  int (*intr_enable)();
- int (*intr_disable)();
  int (*intr_register)(void (*handler)(int));
  int (*excp_register)(void (*handler)(int));