RSoC 2021: QEMU on Redox OS - Part 1

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2021-07-14 01:30:06

This is my first time writing on the Redox OS blog! In fact, it’s my first time ever writing a blog post and so it might not be one of my finest pieces.

I am one of the RSoC (Redox Summer of Code) participants (students) this year (2021). As part of RSoC, I have been working on porting QEMU to Redox OS for the past one month. This is my first post detailing my project in order to give you an insight into it and what the future might hold.

QEMU: It is an emulator that is capable of emulating various hardware (like Intel or ARM processors) within a software environment (your OS) in order to help run software, that runs only on the above-mentioned hardware. It is capable of emulating entire machines, so that you can test your software in the emulator rather than using the actual machine.

It’s because, I feel that every OS developer has the dream of making their OS “self-host” capable. What I mean by that is, currently, the Redox OS toolchain uses one of a few supported Linux distributions to compile the OS code into a binary, after which it can either be run on QEMU or on one of the supported machines. What you CANNOT do (at the moment), is compile and run Redox OS on QEMU ON Redox OS. So, once QEMU is able to run on Redox OS, even if it isn’t practical, one could run Redox OS on QEMU on Redox. And if we combine that with the capability to compile Redox OS on Redox OS, then we can theoretically eliminate the need for another operating system, as development, compilation and testing/running Redox OS can be accomplished on Redox OS itself.

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