Wrote empty definitions for some APIC functions

Started x86 interrupt setup code

src/x86/apic.c

@@ -0,0 +1,23 @@
+#include "apic.h"
+
+void apic_enable()
+{
+
+}
+
+void apic_eoi()
+{
+
+}
+
+void apic_send_ipi(
+    uint32_t vector,
+    enum apic_delivery_mode_t delivery_mode,
+    enum apic_destination_mode_t destination_mode,
+    enum apic_level_t level,
+    enum apic_trigger_mode_t trigger_mode,
+    enum apic_destination_shorthand_t shorthand,
+    uint32_t destination)
+{
+    
+}

src/x86/apic.h

@@ -140,11 +140,13 @@ struct apic_registers_t
     struct apic_register_t reserved_5;
 };
 
-void apic_enable(struct apic_registers_t volatile *apic_registers);
+extern struct apic_registers_t volatile *apic_registers;
 
-void apic_eoi(struct apic_registers_t volatile *apic_registers);
+void apic_enable();
 
-void apic_send_ipi(struct apic_registers_t volatile *apic_registers,
+void apic_eoi();
+
+void apic_send_ipi(
     uint32_t vector,
     enum apic_delivery_mode_t delivery_mode,
     enum apic_destination_mode_t destination_mode,

src/x86/quark_x86.c

@@ -2,14 +2,19 @@
 #include "pageallocator.h"
 #include "multiboot2.h"
 #include "memorymap.h"
+#include "apic.h"
 #include "interrupts.h"
 #include "stdio.h"
+#include "string.h"
 #include "module.h"
+#include "isr.h"
 #include <stdint.h>
 #include <stddef.h>
 
 extern int _kernelEnd;
 
+struct apic_registers_t volatile *apic_registers;
+
 int startPaging(uint32_t *directory, uint32_t *table, uint32_t *identityTable)
 {
     for (int i = 0; i < 1024; i++)
@@ -60,15 +65,29 @@ int initialize(void *multiboot_info)
     {
         printf("%i\t\t\t%08x\t\t%u\n", boot_info.map.array[i].type, boot_info.map.array[i].location, boot_info.map.array[i].size);
     }
-    page_stack.base_pointer = 0xFFC00000;
-    page_stack.stack_pointer = 0xFFC00000;
-    page_stack.limit_pointer = 0xFF900000;
+    page_stack.base_pointer = (physaddr_t*)0xFFC00000;
+    page_stack.stack_pointer = (physaddr_t*)0xFFC00000;
+    page_stack.limit_pointer = (physaddr_t*)0xFF900000;
     initialize_page_stack(&page_stack, &boot_info.map, 4096);
     for(int i = 0; i < boot_info.module_count; i++)
     {
         load_module(&kernel, &boot_info.modules[i]);
     }
     // TODO: setup IDT
-    
+    memset(idt, 0, sizeof(struct interrupt_descriptor_t) * 256);
+    create_interrupt_descriptor(&idt[EXCEPTION_DIV_BY_0], (void*)isr_division_by_zero, INTERRPUT_INT32, 3);
+    create_interrupt_descriptor(&idt[EXCEPTION_GPF], (void*)isr_gp_fault, INTERRPUT_INT32, 3);
+    create_interrupt_descriptor(&idt[EXCEPTION_PAGE_FAULT], (void*)isr_page_fault, INTERRPUT_INT32, 3);
+    create_interrupt_descriptor(&idt[EXCEPTION_DOUBLE_FAULT], (void*)isr_double_fault, INTERRPUT_INT32, 3);
+    create_interrupt_descriptor(&idt[0x80], (void*)isr_syscall, INTERRPUT_INT32, 3);
+
+    // TODO: setup APIC
+    asm volatile(
+        "mov $0xFF, %%al;"
+        "outb %%al, $0xA1;"
+        "outb %%al, $0x21;"
+        ::: "al"
+    );
+    apic_enable();
     // TODO: enter first process
 }