Syndications

To make a useful kernel we require it to perform tasks like setting a memory chunk to zero, or copying the memory from a source address to destination address. It may have to understand what a boolean is or what NULL is. So, for that we require the "C Standard Library" and hence we need to implement it (or the functions it contains as abstractions to commonly used functions).

For this, in day 4 I utilized clang's internal C library as well as resorted to writing the functions all by myself.

As the days progress the journey is getting more fun and interesting. It was the part where actual text was going to be printed. It was a kernel hello-world.

Day 3 focused on printing characters on the console by talking to SBI finally implementing putchar and eventually printf.

The actual development of OS started with making the build script run.sh in bash to setup and launch a qemu RISC-V virtual machine with OpenSBI as bios for QEMU.

Then a linker script kernel.ld was made and a basic kernel process kernel.c was written. Finally, the build script was updated to include compiler and execution commands and flags to properly boot the kernel.

Day 2 focused on writing a basic starting process of a kernel and running it in a virtual machine.

I have set up the environment required to run RISC-V 64 toolchain using QEMU.

Installed a debian RISC-V 64 iso and set it up to my liking with autologin and proper terminal emulation and sudo. I then installed gcc, gdb and neovim for writing and compiling programs.

Details of what happened on Day 1 is tracked using git with codeberg as a remote.

I have decided to use Operating System in 1000 Lines as the learning material because it was featured as a beginner level learning material in github:riscv/learn.

I want to learn systems programming and I thought why not go with the open source one which is currency in development. So, I chose the RISC-V architecture. That way if I decide to keep pursuing it, I can grow along with the ISA slowly catching up to it.

I want to keep a streak by posting here every day about what I learn. Let's hope it goes well.

I just love when people use webmentions. Cool site @faulty.

Trying to replace as many apps I use with the apps written in rust to see how much is possible.

Continuous: Oxidation by flux was very helpful.

I don't mean it in a dangerous sense, like how she does in the series. But think it in a more general sense. It's a good advice.

I have tears in my eyes, hearing that ingenuity is dead, but not fully dead. First she just shocks everyone by living more than we anticipated her to, and now she is dead because she can no longer do what she went there to do. But, still alive that she's doing work that she wasn't even assigned to do, with broken wings and muddy eyes.

So, Scar was suffering from depression, after all he had the pressure of becoming a king, and yet he wasn't trained, cared, taught, loved....(As described in the story.). Why did Mufasa not understand and forgive him and let him be the part of the family (While he was once lost and alone too.)?

Spoiler Alert: He wanted the villain to its sequel.

Using linux coming from windows is like, talking in a different language. You try to use your grammar with their words (making it an accent) and you feel difficult communicating.

And saying linux is harder to use than windows is like speaking <insert foreign language here> is harder than speaking <insert your language here>.

Live in the place for some time and instead of worrying about the language, you'll think about the services, products and lifestyle the place offers.