Karina
caf2d2b4a8
- fix(gs): was a nightmare. now its solved. Both MSR_GS_BASE and MSR_KERNEL_GS_BASE are now initialized to , preventing null GS_BASE when interrupt occurs during the first kernel task run - chore(syscall.asm): stability improvements. User RSP is now saved via kernel stack instead of global g_cpu, preventing stack theft when task switch occurs during a syscall - feat(interrupts): all irq and isr handlers now conditionally perform swapgs based on the CS selector (checkin if comfing from ring 3) - upgrade(scheduler): big update: 1) added TASK_BLOCKED state from process sync; 2) syncronized PID and Task ID to fix wakeup logic; 3) implemented sched_block and sched_exit() for proper wait/exit syscalls
111 lines
3.7 KiB
Markdown
111 lines
3.7 KiB
Markdown
# termOS Roadmap
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## Legend
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- ✅ **Done**: Implemented and working.
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- 🚧 **WIP**: Currently under active development.
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- 📅 **Planned**: Scheduled for future releases.
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- 🤔 **Vision**: Long-term goals for v1.0.
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---
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## Current Status: v0.5.2 (Alpha)
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*Where we are now.*
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- **Core:** Ring 0 / Ring 3 isolation implemented.
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- **Mem:** PMM (bitmap), VMM (PML4, HHDM).
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- **Exec:** Custom **HOT!** executable format (static loader).
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- **FS:** VFS + Initramfs (CPIO, read-only).
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- **User:** Basic jump to userspace (hardcoded stack, no heap yet).
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---
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## 📅 Phase 1
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*Goal: Transform the decorative userspace into a functional mechanism.*
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### v0.5.3 (Immediate Priority)
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*Focus: Lifecycle & Memory*
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- [x] **Syscall: Memory Management**
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- Implement `sys_mem`.
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- Allow userspace to dynamically allocate pages (User Heap).
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- [x] **Syscall: Process Lifecycle**
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- `sys_spawn(path)`: Load `.hot` files via VFS, create new process structures.
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- `sys_exit(code)`: Proper termination, ZOMBIE state, resource cleanup in scheduler.
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- [x] **Userspace Lib (mini-libc)**
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- Wrappers: `malloc`, `free`, `exec`, `exit`.
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- `crt0.asm` for proper `main()` entry.
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### v0.5.4 (The Shell Update)
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*Focus: Interactive Userspace*
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- [ ] **Userspace Shell (`ush`)**
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- Porting `ksh` logic into a standalone `.hot` binary.
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- Standard I/O abstraction (stdin/stdout) to pass keyboard input to active process.
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- [ ] **Basic Utils**
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- `ls`, `cat`, `echo`, `ver` as standalone programs.
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- Remove built-in commands from the kernel.
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---
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## 📅 Phase 2
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*Goal: Total independence from external libraries and architectural hygiene.*
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### v0.6.0 (Architecture Overhaul)
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- [ ] **Bootloader Independence**
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- Remove `posix-uefi` library.
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- Write custom UEFI entry point (pure PE).
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- Kernel itself becomes a valid `.hot` executable.
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- [ ] **HOT! Format Hardening**
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- Fix segment alignment (Page Alignment) in `elf2hot` and kernel loader.
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- Add metadata headers (stack size, permissions).
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- [ ] **Concurrency Fixes**
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- Implement spinlocks (`spinlock`).
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- Protect allocator and process lists from interrupt race conditions.
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---
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## 📅 Phase 3
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*Goal: Prepare the environment for self-hosting. We cannot compile on a Read-Only FS.*
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### v0.7.0 (Filesystem & Input)
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- [ ] **Write Support**
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- Storage driver (NVMe/AHCI or Writable RAMDisk).
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- Writable Filesystem (FAT32 or custom simple FS).
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- [ ] **Input Subsystem**
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- Input buffering, Pipe (`|`) support in shell.
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- Basic TTY/PTY abstraction.
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### v0.8.0 (The Editor)
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- [ ] **Text Editor**
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- Write a simple editor (nano-like) in userspace.
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- Capabilities: Open, Edit, Save files.
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---
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## 📅 Phase 4
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*Goal: Self-Hosting.*
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### v0.9.0 (The Toolchain)
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- [ ] **Linker (`hld`)**
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- Native linker capable of outputting `.hot` files (running inside termOS).
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- [ ] **Compiler Port**
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- Port **TCC (Tiny C Compiler)** to termOS.
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- Adapt libc headers for the OS environment.
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### 🤔 v1.0.0 (Self-Hosting)
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- [ ] **Bootstrapping**
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- Compile the Dewar kernel *inside* termOS.
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- Boot from the newly compiled kernel.
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- Total victory.
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---
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## 📜 History
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| Version | Date | Key Features |
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| :--- | :--- | :--- |
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| **v0.5.2** | 2026-01-30 | **HOT!** format, Ring 3 isolation, VFS, CPIO parsing. |
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| **v0.5.1** | 2026-01-29 | Initial userspace jumps, syscall mechanics. |
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| **v0.5.0** | 2026-01-29 | Kernel officially named "Dewar". Versioning standardized. |
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| **v0.4.x** | 2026-01-28 | Basic VFS, Shell improvements, basic multitasking. |
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| **v0.3.x** | 2025-12-30 | Scheduler, ~~Composer~~, Heap manager. |
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| **v0.2.x** | 2025-12-28 | `ksh`, Keyboard driver, HHDM, PMM/VMM. |
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| **v0.1.x** | 2025-12-21 | First boot, GDT/IDT, Serial/Console, Panic handler. |
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