Writing an operating system kernel from scratch / Uros Popovic

｢ I implemented this exercise in Zig, rather than traditional C. In addition to being an interesting experiment, I believe Zig makes this experiment much more easily reproducible on your machine, as it’s very easy to set up and does not require any installation (which could otherwise be slightly messy when cross-compiling to RISC-V) ｣

https://popovicu.com/posts/writing-an-operating-system-kernel-from-scratch/

Hivemind, gūdžiais ikifeisbukiniais laikais, prieš kokius ~20 metų, lietuviškame IRC buvo toks kanalas #osdev, kur rinkosi žmonės besidomintys (pagrinde mėgėjišku) operacinių sistemų programavimu. Kur dabar žmonės renkasi paplepėti tokiom temom?

#redox #rust #osdev #mobileunix
Ayyyyy lmao, Redox OS on Blackberry KEY2 LE!

When you write a #Unix system in #JavaScript to run in a web browser, and finally get it to the point you can write code inside it.

#programming #osdev

cc here is a 'code compiler' not a 'C compiler' stop being picky.

Everyone has seen the #Microsoft headquarters, the #Apple headquarters, even the #Linux headquarters, but have you seen the #Arikoto headquarters?

Look up from your phone, watch, PC, whatever you’re reading this on.

Yep, over there. That’s the Arikoto headquarters. Over there too. I work on Arikoto, wherever I want, whenever I want. The universe is my headquarters.

Check it out on #Codeberg:
https://codeberg.org/NerdNextDoor/arikoto

I have an update about the #Arikoto #OS codebase.

I am planning to move Arikoto from #GitHub to #Codeberg at some point. (Possibly along with some other projects)

I hopefully plan to do this by the end of 2025, no promises.

Please boost this post so others know about the move.

So far #osdev is seeming somewhat less fraught on RISC-V than x86, though admittedly I haven't really done anything yet.

On a forum I frequent for hobby operating system developers, somebody has posted code that doesn't work (nothing unusual there, most code posted on the forum doesn't work). However, this code was written with generative AI.

WHY?!?!

Writing a hobby operating system is by definition something you do for fun. Why on earth would you skip the actual bit where you do the hobby?!

git: purgatorio – the WIP 64-bit port of Inferno via @lproven https://lobste.rs/s/ogd44u #osdev #unix
https://git.9front.org/plan9front/purgatorio/HEAD/info.html

After hacker summer camp I’m going to get back to my RISC-V simulator (which already has a name).

What should I call the little OS I’m writing for RISC-V?

If you are using #DTrace on #FreeBSD, then I've got good news for you.

I've added a new manual to FreeBSD. It's called d(7) and it is a short reference of the #D scripting language. Currently, it covers only a subset of all variables and functions, but we'll add more iteratively.

Here are some previews for you:

HTML: https://people.freebsd.org/~0mp/d.7.html

MDOC (view with man(1)): https://people.freebsd.org/~0mp/d.7

Have fun tracing your systems!

Memory safety is great, but it's not enough for critical systems. How do we guarantee type safety when interfacing with unsafe C code or hardware?
This ;login; article explores the challenges and solutions of doing so.

#Rust #Embedded #OSDev

https://www.usenix.org/publications/loginonline/memory-safety-merely-table-stakes

I've just committed a new manual page to #FreeBSD: tracing(7), an introduction to #tracing and #performance #monitoring facilities.

It'll take a moment before it is available for readers on man.freebsd.org, so for the time being you can grab a copy from here (https://cgit.freebsd.org/src/plain/share/man/man7/tracing.7?id=c29459f901dc73e1ebe1e654da2677cc0b7bd296) and open it with man(1).

k23 (the Wasm OS) just got a shiny new async executor! But we need your help:
The executor is likely full of concurrency bugs, deadlocks and worse.

So if you want to help out the project an absolute ton head over here and help get kasync tested:
https://github.com/JonasKruckenberg/k23/issues/464

hell yeah #osdev

Implementing a RISC-V hypervisor https://lobste.rs/s/qzbwqv #osdev #virtualization
https://seiya.me/blog/riscv-hypervisor

Getting tired of dealing with code generation issues w/C compilers in my #osdev project, so I've started working on a fresh implementation of the C code in x86-64 assembly.

I've gotten this to the point where it starts up, switches to protected mode, then to long mode, and can read keyboard input and display some things to the text screen. I'll start rewriting the actual display driver tomorrow, then the ATA driver so I can get it to load the konilo rom & blocks. At that point, I'll hopefully be able to reuse the existing unix ilo-amd64 assembly vm code to run a full Konilo system.