Some very old changes commited now.

TODO

@@ -0,0 +1,32 @@
+Roadmap:
+    ✔ Higher half booting in long mode
+    ✔ Virtual memory management
+    ☐ Physical memory manager
+        ✔ Single page
+        ☐ Multiple page blocks
+    ☐ Multithreading
+        ✔ Task switching
+        ✔ Separate address spaces
+        ☐ Forking?
+    ☐ SSE
+        ✔ Enable SSE instructions
+        ✔ Save SSE registers on task switch
+    ☐ Symmetric multiprocessing
+    ☐ User mode code execution
+        ☐ Syscall interface
+    ☐ Decide kernel architecture
+        - Monolitic kernel?
+        - Microkernel?
+
+Documentation:
+    ✔ Toolchain
+    ✔ Booting
+    ✔ Memory management
+    ✔ Libc in kernel space
+    ✔ ACPI tables
+    ✔ APIC, IOAPIC, APIC timer
+    ☐ SSE
+    ☐ Framebuffer
+    
+
+https://pubs.opengroup.org/onlinepubs/9699919799/