Aevros

Aevros is a self-explanatory operating system kernel meticulously crafted from scratch using C and x86 assembly. Unlike traditional educational kernels that primarily identify what went wrong without explaining the underlying reasons, Aevros provides answers to the crucial question: why did an issue occur? This focus on understanding empowers users to diagnose and address problems more effectively.

Key Features

• Built-in Introspection Tools: Aevros includes various tools that allow users to query the system’s state in plain English, moving beyond complicated hexadecimal outputs. For example, command outputs can clarify system conditions, revealing detailed insights, such as:

  health
  

  

• Complete System Transparency: Aevros is designed to ensure that every subsystem can be modified and understood without hidden dependencies. This eliminates guesswork, providing a clearer picture of system functionality.

• Accurate Error Reporting: The kernel does not merely display error codes; it articulates what occurred during faults. For instance, page faults produce descriptive messages that inform users about the nature of the error and possible implications.

• Comprehensive Logging: Each task maintains a detailed history of changes, linking every allocation back to its source file, line, and owning process, thereby ensuring that no actions are taken silently.

Current Development Status

As an actively developed project, Aevros is continuously evolving. Key features currently functional include:

• Boot processes, interrupts, and system initialization
• Physical memory management and allocation tracking
• Process handling with fork() and exec() capabilities
• System calls, virtual file systems, and memory management utilities

Area	Status
Boot, GDT/IDT/PIC, interrupts	Working
Physical memory, paging, buddy + slab allocators	Working
Allocation tracker (file, line, owner, per alloc)	Working
Scheduler, fork/exec, ELF loader	Working (cooperative)
Syscalls (int 0x80), VFS, RAMFS	Working
Introspection commands like whyalive, blast	Working
DevFS, full ring 3 isolation	Experimental / partial

Long-Term Vision

The overarching objective for Aevros is to transform it into an intuitive operating system for developers seeking clarity during debugging. Future goals include:

• Implementing robust memory protection for user tasks
• Developing a preemptive scheduler to ensure fair CPU usage
• Enhancing the system with networking capabilities and a graphical user interface

Aevros aims to simplify debugging processes, promoting a more interactive and educational environment for users looking to deepen their understanding of operating system internals.