https://www.youtube.com/@offlinemark

Milestone 1: JOS

• ✅ Lab 1: Boot
• ✅ Lab 2: Memory Management
• ✅ Lab 3: User Environments (Processes)
• ✅ Lab 4: Preemptive Multitasking
• ✅ Lab 5: Filesystem, Spawn, Shell
• ✅ Lab 6: Network card driver

Milestone 2: Modern OS Foundation

• ✅ Try bootloaders
  • ✅ Multiboot V1 (Grub)
  • ✅ Multiboot V2 (Grub)
  • ✅ Limine (BIOS)
  • ✅ Limine (UEFI)
• ✅ C++ support in JOS
• ✅ Modern LLVM toolchain
  • ✅ Clang instead of GCC
  • ✅ cc-runtime (compiler-rt) instead of libgcc
  • ✅ LLD Linker
  • ✅ LLDB Debugger
• ✅ Port JOS to CMake
• ✅ Third party C++ libraries
  • ✅ STL
  • ✅ ETL
  • ✅ Frigg

Milestone 3:

• ✅ Basic virtual address space management (mapping)
• ✅ Basic Interrupts/Exception support
• ✅ Basic Scheduler (Round Robin)
  • ✅ Deferred task cleanup
• ✅ Task stack guard pages
• ✅ Cooperative multitasking
  • ✅ taskYield() – cooperative yield
• Task Scheduler APIs
  • ✅ taskExit()
  • ✅ taskWaitForTaskExit()
  • ✅ taskSleepCpuCycles()
• ✅ Preemptive Multitasking
  • ✅ LAPIC Timer Interrupt
• Concurrency Primitives
  • Spinlock
  • Mutex
  • Semaphore
  • Condition Variable?
• Drivers
  • Serial console

Future:

• Processes (Task Groups)
• More advanced scheduler
• Audio
• USB
• Kernel Objects
• SMP / Multicore
• Per CPU State (GS)
• Coroutines (In Kernel?)
• Userspace
• IPC
• Graphics
• Drivers
• Filesystem
• ASLR
• Accelerate syscalls (Syscall instruction)
• ARM64
• RISCV