Kernel now responding to keyboard interrupts

src/kernel/arch/i386/boot.s

@@ -273,116 +273,140 @@ irs31:
 irq0:
 	cli 
 	push $0
-	push $32
-	jmp irs_common
+	push $0
+	jmp irq_common
 
 .globl irq1
 irq1:
 	cli 
 	push $0
-	push $33
-	jmp irs_common
+	push $1
+	jmp irq_common
 
 .globl irq2
 irq2:
 	cli 
 	push $0
-	push $34
-	jmp irs_common
+	push $2
+	jmp irq_common
 
 .globl irq3
 irq3:
 	cli 
 	push $0
-	push $35
-	jmp irs_common
+	push $3
+	jmp irq_common
 
 .globl irq4
 irq4:
 	cli 
 	push $0
-	push $36
-	jmp irs_common
+	push $4
+	jmp irq_common
 
 .globl irq5
 irq5:
 	cli 
 	push $0
-	push $37
-	jmp irs_common
+	push $5
+	jmp irq_common
 
 .globl irq6
 irq6:
 	cli 
 	push $0
-	push $38
-	jmp irs_common
+	push $6
+	jmp irq_common
 
 .globl irq7
 irq7:
 	cli 
 	push $0
-	push $39
-	jmp irs_common
+	push $7
+	jmp irq_common
 
 .globl irq8
 irq8:
 	cli 
 	push $0
-	push $40
-	jmp irs_common
+	push $8
+	jmp irq_common
 
 .globl irq9
 irq9:
 	cli 
 	push $0
-	push $41
-	jmp irs_common
+	push $9
+	jmp irq_common
 
 .globl irq10
 irq10:
 	cli 
 	push $0
-	push $42
-	jmp irs_common
+	push $10
+	jmp irq_common
 
 .globl irq11
 irq11:
 	cli 
 	push $0
-	push $43
-	jmp irs_common
+	push $11
+	jmp irq_common
 
 
 .globl irq12
 irq12:
 	cli 
 	push $0
-	push $44
-	jmp irs_common
+	push $12
+	jmp irq_common
 
 .globl irq13
 irq13:
 	cli 
 	push $0
-	push $45
-	jmp irs_common
+	push $13
+	jmp irq_common
 
 .globl irq14
 irq14:
 	cli 
 	push $0
-	push $46
-	jmp irs_common
+	push $14
+	jmp irq_common
 
 .globl irq15
 irq15:
 	cli 
 	push $0
-	push $47
-	jmp irs_common
+	push $15
+	jmp irq_common
 
+irq_common:
+	pusha
 
+	mov %ds, %ax
+	push %eax
+
+	mov $0x10, %ax
+	mov %ax, %ds
+	mov %ax, %es
+	mov %ax, %fs
+	mov %ax, %gs
+
+	call irq_handler
+
+	pop %eax
+
+	mov %ax, %ds
+	mov %ax, %es
+	mov %ax, %fs
+	mov %ax, %gs
+
+	popa
+	add  $8, %esp  # cleans push error and irs code
+	sti
+	iret # pops 5 things at once: CS, EIP, EFLAGS, SS, and ESP
 
 
 irs_common:

src/kernel/arch/i386/idt/idt.cpp

@@ -1,5 +1,5 @@
 #include "idt.h"
-
+#include "Scancodes.h"
 
 IDT_entry idt_table[256];
 IDT_ptr idt_ptr;
@@ -17,7 +17,7 @@ void set_id_entry (uint8_t num , uint32_t base, uint16_t sel,  uint8_t flags){
 void irs_handler (registers regs) {
         kterm_writestring("received interrupt!\n");
      
-        printf(" Interrupt number: %d \n", regs.int_no);
+        printf("(IRS) Interrupt number: %d \n", regs.int_no);
 
         if( regs.int_no == 13){
             printf(" Error code: %d \n", regs.err_code);
@@ -28,6 +28,52 @@ void irs_handler (registers regs) {
 
 
 
+void irq_handler (registers regs) {
+        
+     
+        if ( regs.int_no != 0) {
+            kterm_writestring("received interrupt!\n");
+            printf("(IRQ) Interrupt number: %d \n", regs.int_no);
+        
+        }
+        
+        if ( regs.int_no == 1 ){
+            // Keyboard interrupt !!
+
+            int scan;
+            register int i;
+
+            // Read scancode 
+
+            scan = inb(0x60);
+            
+            // Send ack message!
+            i = inb(0x61);
+            outb(0x61, i|0x80);
+            outb(0x61, i);
+            kterm_writestring("A key was pressed/released\n");
+            printf( "Scancode: %x\n", scan);
+
+    
+        }
+
+        
+        
+        outb(0x20, 0x20); // send end of interrupt to master
+
+        if ( regs.int_no > 8 && regs.int_no <= 15) {
+            outb(0xA0, 0x20); // send end of interrupt to slave 
+        }
+       
+       
+        if( regs.int_no == 13){
+            printf(" Error code: %d \n", regs.err_code);
+
+        }
+
+}
+
+
 
 
 
@@ -39,7 +85,7 @@ void init_idt(){
 
     // TODO: Set everything to zero first
 
-    set_id_entry(0,  (uint32_t) irs0 , 0x08, 0x8E);
+    set_id_entry(0,  (uint32_t) irs0 , 0x08, 0x8F);
     set_id_entry(1,  (uint32_t) irs1 , 0x08, 0x8E);
     set_id_entry(2,  (uint32_t) irs2 , 0x08, 0x8E);
     set_id_entry(3,  (uint32_t) irs3 , 0x08, 0x8E);

src/kernel/kernel.cpp

@@ -140,19 +140,18 @@ extern "C" {
         
 
         /** test interrupt handlers **/
-        asm volatile ("int $0x03");
-
-        asm volatile ("int $4");
-
+        //asm volatile ("int $0x03");
 
+        //asm volatile ("int $0x04");
 
         while (true){
-            // Read time indefinetely 
+            //Read time indefinetely 
             read_rtc();
             printf( "UTC time: %2d-%2d-%2d %2d:%2d:%2d  : (YY-MM-DD h:mm:ss)\r" ,year, month, day, hour, minute, second);
             delay(1000);
         }
 
+        
         /** Lets start using the serial port for debugging .. **/
         // Hopefully once we go into realmode or do something that
         // cause the screen to go black.. this serial comms part will give