Yauc (Yet Another Unix Clone)

[hexed ridge]

i686 or x86-64

[lyric cairn]

i686

[hexed ridge]

I see

I'd suggest porting it to x86-64 eventually

[oblique orchid]

no x64? Smh 😔 jokes aside, neato!

[lyric cairn]

theres literally nothing about this kernel to be interested in i just wanna keep a progress tracker 😭 im not planning on adding anything special

[hexed ridge]

No it's fine, it's just that x86-64 sometimes removes headaches (it also introduces some but we don't talk about that)

[lyric cairn]

i worked on https://discord.com/channels/440442961147199490/1330994677226406010 and for a while before i started Sun32 i worked on Sun64 and it was HELL

then again it was my first kernel

but i dont wanna touch long mode for a long while

[hexed ridge]

Oh you're the same guy

[lyric cairn]

yeah 😭

but i had NO CLUE what i was doing there i was fucking around and contributors were joining and taking it seriously and i didn't have the time to contribute properly so i thought it'd be best in the long run to leave and let the people that actually know what they're doing do the serious projects

[hexed ridge]

It's fine bentobox is like my 47382847493th kernel

[lyric cairn]

haha okay fair

https://github.com/GBX9570/yauc github 🙏

[hexed ridge]

Correction: it's my 10th kernel (counting the rewrite)

[lyric cairn]

jesus christ okay you probably have a little bit more experience than me 💔

[hexed ridge]

Tbf most of them were short lived

[lyric cairn]

if we count rewrites im on like my eighth kernel but the first kernel hardly got past a GDT till i left

[hexed ridge]

My first kernel didn't even have GDT

[oblique orchid]

no GDT Init... OK? 🥀

[hexed ridge]

Perfect

[lyric cairn]

what is the liklihood that i can get an IDT done before 2am (its 12:28am)

wait i need paging

ignore me

[hexed ridge]

What? Do IDT first

[lyric cairn]

have i been doing it in the wrong order this WHOLE TIME

[oblique orchid]

bootiful :3

[oblique orchid]

uh, pretty likely

[lyric cairn]

fml

[hexed ridge]

I recommend GDT -> IDT -> page frame allocator (PMM) -> paging (VMM)

[lyric cairn]

that would explain my countless issues

[oblique orchid]

wut, isn't that a good thing?

[lyric cairn]

wait no i thought you responded to something else sorry 😭

[oblique orchid]

IDT isn't too much harder than the GDT

GAH, JUMPSCARE

[lyric cairn]

okay thank you

[lyric cairn]

this is actually extremely useful thank you 😭

[hexed ridge]

Np

[lyric cairn]

fighting the urge to copy my last kernels IDT even though i know its gonna come out the exact same because i follow the OSDev guide 💔

[lyric cairn]

IDT worksn't

[oblique orchid]

wah wah... 🙁

[lyric cairn]

im just reporting progress theres no need to mock 💔

[oblique orchid]

ono I wasn't trying to mock lol

sorri

[lyric cairn]

oh okay sorry i misunderstood you 😭

[oblique orchid]

this is a bit weird tho

void exception_handler(uint8_t vector)
``` this expects a vector to be passed to it, yet I don't see either isr macros move anything into edi

[lyric cairn]

https://wiki.osdev.org/Interrupts_Tutorial
i just followed this, thats what it said to do and it worked last time 💔

wait

where did i get that from

wtf

brb

[oblique orchid]

I think you need to do something like

mov edi, %1
``` in your macros (I think that's how you do it?)

[lyric cairn]

ohh its from my switch statement

if you can't tell ive repurposed some old code 😭

[oblique orchid]

all good lol

[lyric cairn]

yeah okay it was my old code fucking with it 💔

[lyric cairn]

uhhh i hope i do that my old assembly code doesn't make sense to me

%macro isr_err_stub 1
isr_stub_%+%1:
    cli
    pusha
    call exception_handler
    popa
    sti
    iret
%endmacro
; if writing for 64-bit, use iretq instead
%macro isr_no_err_stub 1
isr_stub_%+%1:
    cli
    pusha
    call exception_handler
    popa
    sti
    iret
%endmacro

[oblique orchid]

nah, just add that line before the call exception_handler

[lyric cairn]

okay thank you 😭

in both of them?

[oblique orchid]

ye

[lyric cairn]

i gotta relearn assembly its been a while

[grand mango]

mov eax, rip

Also change your GDT message to "GDT init... ok"

[lyric cairn]

#1404603635928666275 message

[oblique orchid]

they did

[grand mango]

Lmfao

I'll check out the repo

And leave a star

[lyric cairn]

im pretty happy with the progress ive made today considering i started writing this like 6 hours ago

[grand mango]

very bare bones

but cool

[lyric cairn]

amongst doing other things

[lyric cairn]

yeah im gonna be doing A LOT tomorrow

[grand mango]

IDT init.. ok

Oh that's already ok

[lyric cairn]

the IDT actually works i just gotta implement errors 🙏

[grand mango]

Exceptions

They're called exceptions

[lyric cairn]

yeah thats what i meant

im tired its 2am and i got 4 hours sleep 💔

[grand mango]

this code is making me cry a tiny bit

[oblique orchid]

go to sleep XD

[grand mango]

Can't hate too much tho because my exception handler is exactly the same lmao

[grand mango]

Lmfao "debig"

[lyric cairn]

its VERY temporary don't worry 💔

[grand mango]

I check if cs is 0x08 (kernel gdt init ok) and if it is I panic

and if it isn't the heat death of the universe occurs

[lyric cairn]

bit dramatic but fair enough

[grand mango]

Yeah just a tiny bit

also you reminded me to fix my terrible code that page faults on a sunday

so thanks

[lyric cairn]

your welcome 😭

[grand mango]

Oh yeah, paging

Don't forget paging

[lyric cairn]

ill get it done asap

[lyric cairn]

got a better exception handler 🙏

[hexed ridge]

do a regdump and a backtrace too

[lyric cairn]

will do

[lyric cairn]

how do i do a regdump and backtrace 💔 i cant find any resources on them

[void ferry]

about regdump just put regs into a interrupt frame in isr handler and then read that from c

and print them like you get it

[lyric cairn]

im going to read up on interrupts more and assembly because i have no clue how to do this 😭

[lyric cairn]

this shit does not make sense to me 💔

do i NEED to do this or can i leave it for now

[oblique orchid]

eeeh, you don't need it, but it can be kind of a pain to debug without it

[lyric cairn]

obviouslly ill need it eventually but for now i can just use gdb and shit 💔

[oblique orchid]

and -d int

[lyric cairn]

yeah okay ill take the harder route i guess 😭

[lyric cairn]

i forgot about this tysm for reminding me 😭

[hexed ridge]

add -M smm=off to that

[lyric cairn]

i feel like removing the logo shouldn't change the exception 😭

[hexed ridge]

wtf

[oblique orchid]

wot the heck

[lyric cairn]

something tells me my idt or isr is fucked so ill go rewrite that

probably for the best, i used old code written when i barely understood it

[lyric cairn]

no updates because my arch install broke and i havent been arsed to reinstall yet so ive been using my mac 💔

should hopefully have an update tonight

at some point

[lyric cairn]

installing stuff for gcc 🙏

[grand mango]

130 hours

[lyric cairn]

apple is never right it took 20 minutes 💔

[grand mango]

Thats what happens when you use M*cOS

[lyric cairn]

my PC is on its last legs it literally can't boot unless i press reset 4 times and/or hit it

not even joking about the last part 😭

[grand mango]

So when's yauc getting unixed intot the unix unixes of Ken Thompson

[lyric cairn]

as soon as its feature complete enough to start implementing unix things 😭

happy new years

[grand mango]

??

[grand mango]

It is feature complete enough

Also take a look at Free95 to see how NOT to make an OS

[lyric cairn]

it just struck 00:00

[grand mango]

It's 2:02 AM

timezones yewh

timezones

[lyric cairn]

free95

[lyric cairn]

im in the UK so im 2 hours behind you 💔

[lyric cairn]

i literally only just got an IDT 😭

[grand mango]

How does it feel to be living in real life 1984

[lyric cairn]

they are on their way to get me for thought crime

in all seriousness though the osa hasn't really affected me that much (yet) 😭

and when/if it does ill just get a VPN

[grand mango]

yeah yeah

OK now make Yauc a free95 fork and sell all your online accounts to Kap to become free95 advertising bots

[lyric cairn]

id rather actually live in 1984

compiling grub and ALL of its dependencies

ahssdhja theres an emoji from another server that i wanna use but i dont have nitro

[lyric cairn]

what the FUCK

[grand mango]

anyways

can I contribute to yauc

I need green squares

[lyric cairn]

mods give us this 🙏

[lyric cairn]

uhh maybe eventually but i kinda wanna keep this project solo for now, one of the reasons i stopped contributing to my last kernel is cause i wanted to make decisions and learn how to do everything myself cause i kinda ran out of things to do as other contribs were doing EVERYTHING

and i stopped learning anything

[grand mango]

I mean

[lyric cairn]

BUT im sure they'd be happy to take to

you**

i say contributors it was one person

and they would want help

[grand mango]

The point of open source is that you can contribute to other projects

But you do you bro

[lyric cairn]

yeah i know, i guess its going against foss but i am not good to work with

at all

[oblique orchid]

meh, I'm kind of the same with my project tbh 🤣

[lyric cairn]

eventually ill open it up but for now i gotta relearn the basics 💔

[grand mango]

Love procrastinating for an entire year because you forgot 1 line in cmake

[oblique orchid]

shh, don't talk about that

[grand mango]

My personal access token expired fuck

OK bye

[lyric cairn]

the crosscompiler page on the osdev site needs updating why does it still reference OS X 10.4/5 and GCC 4.x.x

[lyric cairn]

im switching to debian 😭

[lyric cairn]

since macOS is abysmal to compile gcc and shit for i got nothing done

[lyric cairn]

could somebody try compiling my kernel cause im getting errors that dont make sense

nevermind i found it 💔

i didnt read it properly

[void ferry]

sure

[lyric cairn]

theres some progress

well same error except its actually sure now

[lyric cairn]

IDT definitely works since disabling the PIC results in device not available YIPPEE

I FIXED IT

i didn't enable PIC properly 💔 💔

[oblique orchid]

Ayy! 🎉

[lyric cairn]

I GOT SERIAL WORKING

oh yes also basic paging if forgot to post that

[void ferry]

is it identity map or what

[west canyon]

Wait you have Time Expectations ?

I thought curl was everything

[lyric cairn]

yeah it just maps all the memory it can access (which is anything under ~4gb cause x86), i am gonna rewrite it to be more dynamic eventually since identity mapping won't work forever

or won't be practical to use forever more accurately

or at the very least thats what i think it does

i copied it from my old kernel cause i planned on rewriting it after ive made my PMM i dont remember exactly how it works 💔💔

i should probably read the code

[lyric cairn]

what the fuck

[hexed ridge]

qemu serial expects CRLF

[lyric cairn]

ahh okay thank you

[hexed ridge]

so translate LF to CRLF in your serial driver

[lyric cairn]

WORKS ON REAL HARDWARE

that's to be expected to be fair

BUT STILL

[unborn marsh]

Why Serial init... FAIL?

[lyric cairn]

this laptop doesn't have serial at all

most things don't

i dont think

not laptops generally at the very least

either way its working as intended 😭

[unborn marsh]

How do u detect if it exists?

[hexed ridge]

i suppose check if a loopback test works

[potent mural]

uacpi shilling time

[hexed ridge]

i still need to move to uacpi in bentobox

will do soon™

[lyric cairn]

i just do a check to see if serial works its more or less the same code as on the OSdev site

[lyric cairn]

i dont even have a PMM yet i dont even think i can implement uacpi 💔

[unborn marsh]

Ah

[unborn marsh]

Ah, the magic number technique

[potent mural]

Doing it with uacpi is so much cleaner

[unborn marsh]

Damn Mathew is the biggest uACPI shill

Based, what can I say

[potent mural]

Once I finish reworking my scheduler Ill rework devices and uacpi will be a central part of astral's device system

[lyric cairn]

i literally cannot 💔

[lyric cairn]

got line and file reporting working in the exception handler 🙏

[unborn marsh]

[unborn marsh]

[potent mural]

mitosis

[unborn marsh]

Wait did it post two

[lyric cairn]

got a registry dump now too

[hexed ridge]

regedit dump?

[lyric cairn]

i might've called it the wrong thing 💔

[grand mango]

@lyric cairn do you have printf

[lyric cairn]

indeed i do

[lyric cairn]

https://github.com/mpaland/printf

i use this

[lyric cairn]

switched to clang 🔥

[oblique orchid]

clang ftw 🔥

[lyric cairn]

where the fuck has my magic gone

[grand mango]

align your edx damn

[lyric cairn]

it was aligned i dont know why its gone out of alignment

anyway ive completely changed my thing for it so now the alignments fucked

[grand mango]

also remove that fuckass decimal (...) thing

[lyric cairn]

what the fuck

what are these results

this is just after the stack is set up and shit so nothing should have messed with EAX or EBX

[tawdry flint]

yauc tuah, spit on that thang

-# I'll see myself out now, sorry

[lyric cairn]

i am so confused

[lyric cairn]

fuck this im using limine

[lyric cairn]

and hence the rewrite begins

[lyric cairn]

does anyone know how to set colours in flanterm?

in text

never mind i think ive worked out my issue

[hexed ridge]

Ansi

[lyric cairn]

my issue was that it wasn't working after putting in more than 6 characters so i assumed that I didn't do it right just to realise that sizeof() only takes 8 bytes

2 bytes obviously being colour

[lyric cairn]

got the log functions reimplemented

[empty dagger]

another one succumbs to flanterm :(

[lyric cairn]

its nice to use 😭

im not the type of person to care about whether everything in my project is mine as long as it works and is mine enough that i can call it my own project

GDT reimplemented

[empty dagger]

ig

[grand mango]

I personally don't like flanterm that much

Due to stuff like this

void flanterm_get_dimensions(struct flanterm_context *ctx, size_t *cols, size_t *rows);

[void ferry]

flanterm is kewl

[grand mango]

Mint has apparently never heard of a return value /j

[void ferry]

eh that kinda sucks

(doing a ret value for this)

i personally like that

[unborn marsh]

What's wrong with this

A return value is more complicated for language interop

[grand mango]

I just don't like it bro 😔

operandinion

[oblique orchid]

I wanna replace flanterm in my OS at some point simply because I can :3

[grand mango]

struct flanterm_fb_char {
    uint32_t c;
    uint32_t fg;
    uint32_t bg;
};

uint32_t c

[void ferry]

the c standard recommends int c

iirc

[grand mango]

int32_t c

[void ferry]

😭

[grand mango]

pid_t c

[void ferry]

ctrl_t c

[grand mango]

Use free95 putchar instead OK I should stop mentioning that

[void ferry]

https://tenor.com/view/what-is-bro-yammering-about-what-is-bro-wafflin-about-what-is-bro-yapping-about-yapping-what-is-bro-yappin-about-gif-12728898718751592705

[lyric cairn]

at least the idt works 💔

[lyric cairn]

okay so its been a while

basically i used to just copy shit off guides and pretend it was my code

brilliant development work i know

but ive actually taken some time to learn C myself and start doing things properly

ive just made my own basic TTY driver myself and i am SO proud of myself

expect much more to come because this has given me a million times more motivation than copying off guides ever did and ive only written one tiny thing

[lyric cairn]

got a function to move the cursor around 🙏