fabiensiron / pyr0 Goto Github PK

Write a custom bootloader for the project which must set-up the system before loading the core (video, 32 bits, command line ...).

The tinypy compiler is currently composed of 3 python's modules: tokenize.py, parser.py and encode.py.
The compiler is already boostrapped in bc.c under a array of tpc (tinypy bytecode).
If the compiler is moved in C, the speed is improved and the debugging is easier.
Plus, one can correct some grammar mistakes: empty file, one litteral...

The goal is to avoid boot page-faulting.

Because of a bad utilization by tinypy and a not so good malloc implementation, we may want a better memory manager. Indeed, the current first fit has got a lot of fragmentation. Here are some ideas: replace the first fit by a buddy or do a classical memory manager with a vmm and a slab (http://sos.enix.org/wiki-fr/upload/SOSDownload/sos-texte-art5.pdf).

A simple vfs have to be done. Basically, we need a read-only ext2 ramfs, a tmpfs, a devfs and maybe procfs.

Add a simple kernel thread manager/scheduler.

Rewrite the pyr0 library (include/ and lib/).
First step is to rewrite the code already written in a more homogeneous way.
Second step, is to add some functionalities (math, string etc...).
A "libc" or "pyro.lib" module can be written to test that.

EDIT: some data structures can be added. For example, list, hashtbl, ringbuff, refcnt ...

I really want pyr0 to work on Raspberry (or same kind of stuff). The first step would be to divide the kernel into architecture dependant and non architecture dependant code. After that, let's port the kernel (memory, interrupts at less).