Jnwang/enable timer interrupt

hypervisor/Makefile

@@ -3,7 +3,7 @@
 ASFLAGS = --32 -march=i486 -mtune=i486
 CFLAGS = -m32 -I../include
 
-COBJS = start.o font.o mouse.o int.o keyboard.o memtest.o mm.o fifo8.o serial.o console.o mmu.o libmmu.o
+COBJS = start.o font.o mouse.o int.o keyboard.o memtest.o mm.o fifo8.o serial.o console.o mmu.o libmmu.o timer.o
 SOBJS = int_entry.o libmemtest.o
 
 

hypervisor/int_entry.s

@@ -1,10 +1,11 @@
 
 .text
 .code32
+.global inthandler20
 .global inthandler21
+.global inthandler24
 .global inthandler27
 .global inthandler2c
-.global inthandler24
 
 
 inthandler24:
@@ -23,6 +24,23 @@ inthandler24:
     pop     %es
     iretl
 
+#for timer
+inthandler20:
+    push    %es
+    push    %ds
+    pushal
+    movl    %esp,%eax
+    pushl    %eax
+    mov     %ss,%ax
+    mov     %ax,%ds
+    mov     %ax,%es
+    call    _inthandler20
+    popl     %eax
+    popal
+    pop     %ds
+    pop     %es
+    iretl
+
 #for keyboard
 inthandler21:
     push    %es