Added stub syscall handler

src/interrupts/x86/interrupts.cpp

@@ -1,8 +1,12 @@
 #include "../interrupts.hpp"
 #include "idt.hpp"
+#include "inthandlers.hpp"
 
 kernel::Interrupts::Interrupts()
 {
+    idt[0] = InterruptDescriptor((void*) &divisionByZero, InterruptDescriptor::INT32, 0);
+    idt[8] = InterruptDescriptor((void*) &doubleFaultHandler, InterruptDescriptor::INT32, 0);
+    idt[0x80] = InterruptDescriptor((void*) &syscallHandler, InterruptDescriptor::INT32, 0);
     // Load interrupt handlers
     // Configure PIC
     _lidt();

src/interrupts/x86/inthandlers.cpp

@@ -13,20 +13,27 @@ __attribute__ ((interrupt))
 void gpFaultHandler(void* frame, unsigned int error)
 {
     *display = 'a';
-    asm("hlt");
+    display += 2;
 }
 
 __attribute__ ((interrupt))
 void pageFaultHandler(void* frame, unsigned int error)
 {
     *display = '0';
-    //asm("hlt");
+    display += 2;
 }
 
 __attribute__ ((interrupt))
 void doubleFaultHandler(void* frame, unsigned int error)
 {
     *display = '#';
-    //asm("hlt");
+    asm("hlt");
+}
+
+__attribute__ ((interrupt))
+void syscallHandler(void* frame)
+{
+    *display = 'z';
+    display += 2;
 }
 

src/interrupts/x86/inthandlers.hpp

@@ -13,4 +13,7 @@ void pageFaultHandler(void* frame, unsigned int error);
 __attribute__ ((interrupt))
 void doubleFaultHandler(void* frame, unsigned int error);
 
+__attribute__ ((interrupt))
+void syscallHandler(void* frame);
+
 #endif