tb Clear screen shortcut

kernel/hal/x86_64/intr.c

@@ -218,11 +218,9 @@ void intr_handleintr(IntrStackFrame *frame) {
         intr_eoi(frame->trapnum - INTR_IRQBASE);
         if (c >= 0) {
           uint8_t *bytes = (uint8_t *)&c;
-          spinlock_acquire(&PS2KB_BUF.spinlock);
           for (size_t i = 0; i < sizeof(c); i++) {
             rbuf_push(&PS2KB_BUF.rbuf, bytes[i]);
           }
-          spinlock_release(&PS2KB_BUF.spinlock);
         }
         break;
     }

user/tb/main.c

@@ -119,6 +119,11 @@ void do_mode_interactive(void) {
             uprintf("\n");
             goto begin;
             break;
+          case C('L'):
+            uprintf(ANSIQ_CUR_SET(0, 0));
+            uprintf(ANSIQ_SCR_CLR_ALL);
+            goto begin;
+            break;
         }
 
         char chr = kbchr & 0xFF;