Milestone 1 - Userland process with protection and syscalls

Milestone 1 - Userland process with protection and syscalls

Added since last time:

1. Kernel heap
   • malloc
   • free
2. Page frame allocator
   • kalloc_frame
   • kfree_frame
3. PAE Paging with protection
4. Syscalls
5. Code base for multi-tasking (Context Switch)

Kernel Heap

Page frame allocator

Multitasking in userland