AirOS

[delicate bloom]

this is my first os

[earnest cloak]

64-bit unix like os on limine and flanterm

[gritty oriole]

yes

[earnest cloak]

HOLY SHIT MINTSUKI I NEED AN AUTOGRAPH /j

[gritty oriole]

no

[earnest cloak]

fuck

[delicate bloom]

is that not good?

i thought it was fine

[shrewd glen]

it is lol

[delicate bloom]

im confused

[shrewd glen]

just ignore them

[delicate bloom]

ok

anyways im going to work on VFS now

[earnest cloak]

it's a joke

enjoy your uhhh

64 bit unix like os on limine and flanterm

[earnest cloak]

limine is a good bootloader i just have some problems with it

flanterm as well
good terminal but i wanna make my own

[delicate bloom]

why do you have problems with them

[vital portal]

what kind of problems?

[vital portal]

are they technical in nature?

[delicate bloom]

like, limitations?

[earnest cloak]

somewhat

i want an os to use on my older laptops

so i have a slight problem with it being long mode only

[vital portal]

Limine is not long mode only

it supports multiboot 1 and 2

[earnest cloak]

im really talking about the boot protocol

i use limine with mb2

[vital portal]

ah

[earnest cloak]

never had an issue with it

easier to set up on a disk image than grub imo

if i make a 64 bit version of my os im gonna use its boot protocol

[delicate bloom]

i dont really know what you're talking about, this is my first os im kind of new to this lol

[vital portal]

then stick to Limine and 64-bit

[delicate bloom]

will do

[earnest cloak]

just keep using limine man

nobody uses 2005 computers anyways

you're doing good i still need to finish up my vmm :/ (never learned what that shit is even supposed to do, address spaces??)

[vital portal]

there were x86-64 computers in 2005 :^)

[earnest cloak]

true but they werent really widespread at all

[vital portal]

yeah, but like, after 2010, basically everything was 64-bit

[delicate bloom]

64 bit cats?

[earnest cloak]

nah its 2006 probably

at most 2007

[vital portal]

nah

plenty of Netbooks were 32-bit

[earnest cloak]

true

these are netbooks though they're supposed to just browse the web

back then a 32 bit processor was enough for that (and to do it somewhat well)

they were cheap as well too

ngl netbooks were a pretty good entry to pc's

[earnest cloak]

cats

https://tenor.com/view/cat-cat-meme-cat-typing-typing-cat-funny-cat-gif-6677769051907192566

[delicate bloom]

i have 3 cats

2 of them are kittens

[earnest cloak]

are they 64 bit

[earnest cloak]

yooo nice

[delicate bloom]

i hope so

need to install air OS on them

[earnest cloak]

i shall conclude all cats are powered by dec alpha

[delicate bloom]

real

[earnest cloak]

lmao

[delicate bloom]

i is doing vfs right now

[earnest cloak]

air powered™

[earnest cloak]

damn

[delicate bloom]

pls send help the vfs is eating me

[earnest cloak]

i need my vmm done

what does your vmm do

geniunely

[delicate bloom]

it maps memory

[earnest cloak]

im gonna die if i dont know what a fucking vmm does

oh

FUCK WHAT WAS I DOING THEN

[delicate bloom]

and unmaps memory

it manages virtual memory

[earnest cloak]

i thought it did something fancier than just that

i finished that already so long ago :'(

what was i doing i need to reconsider life now

i was going to do a struct array of mapped and unmapped areas tho

idk that might be helpful but thats a whole different story

rip

[delicate bloom]

yeah it mostly just manages memory

sometimes tho it explodes

[earnest cloak]

oof

[delicate bloom]

and that isnt very fun when it explodes

[earnest cloak]

idk i had a few people tell me my vmm wasn't done and so like i asked them what a vmm does and they had a heart attack explaining and the explanation was somewhat ass

[earnest cloak]

:c

[delicate bloom]

they overthinking the vmm it just manages virtual memory!

[earnest cloak]

overengineering is ass

[vital portal]

simpler said than done

[earnest cloak]

maybe

[vital portal]

look

what people in hobby OSDev spaces typically call "virtual memory manager" isn't really virtual memory management

virtual memory management refers to managing pages which may not necessarily currently be in RAM

e.g. pages that are swapped out on disk

[delicate bloom]

i like to think of it as managing virtual memory

[earnest cloak]

oh so it manages swap and stuff

[vital portal]

yes

[earnest cloak]

cool

im planning for my vmm to just have a list of info about different mapped areas

struct array idk

[earnest cloak]

probably one of the flags can be "swapped out on disk" or something

[vital portal]

wouldn't that limit the amount of areas you can map?

[earnest cloak]

most likely

[vital portal]

but then you can only swap out entire mappings

not individual pages

[earnest cloak]

that might be simpler though

what should i do instead

[vital portal]

what do you do for your PMM?

[earnest cloak]

freelist

i can send link for implementation

[vital portal]

linked list of mapped areas would be the simplest one

and ig equivalent to an array

but, searching by address might be slow

so maybe some kind of self-balancing tree structure

[earnest cloak]

true

[vital portal]

another option is ofc a hash map

[delicate bloom]

i think i have the vfs done?

ii broke the printk

there we go

vfs complete yay

[earnest cloak]

[INFO] Read: hello
yo whats up

[delicate bloom]

not much

[earnest cloak]

:c

rip

[delicate bloom]

im very proud of the vfs implementation

[earnest cloak]

congratulations

[delicate bloom]

i can vfs

[earnest cloak]

now add the file systems

[earnest cloak]

yiy

[delicate bloom]

pls no

[earnest cloak]

youd have to eventually

[delicate bloom]

I WILL LATER I SWEAR PLS SPARE ME!!!

[earnest cloak]

You will have to do it. Let the thought haunt you. Let it make you think about the futile struggle of clinging onto the last bits of sanity you have left.

[delicate bloom]

AahhhHHHHHHH

[earnest cloak]

mauhahahahaahahaha

fat32 is somewhat simple hopefully

[delicate bloom]

i would do fat12 and fat16 before fat32

[earnest cloak]

im pretty sure you can do all of them at the same time

[delicate bloom]

i guess

[earnest cloak]

fat32 is im pretty sure an extension of fat16

idk you can just do it all at the same time

[delicate bloom]

i'd do fat12 first tho

[earnest cloak]

true

[delicate bloom]

but i would need a block device before i even did any of those, right?

i could do nvme, floppy, sata, idk

[earnest cloak]

i wanna ask why you'd probably never use floppies

[earnest cloak]

i guess so

you need device drivers before the filesystems

[delicate bloom]

makes sense

ramfs works for now, atleast until i have userspace

[earnest cloak]

So you have been temporarily spared. But how long is temporary? A philosophical question indeed.

[earnest cloak]

fair

[delicate bloom]

i read on one of the threads here that nvme was easy???

[earnest cloak]

smells like bullshit to me as well

idk how it is easy

its very modern

[delicate bloom]

idk how on earth it could be easy

[earnest cloak]

it has probably more technologies than a nuclear reactor

[delicate bloom]

nothing NVMe smells easy

[earnest cloak]

nothing smells easy

[delicate bloom]

nothing easy

[earnest cloak]

nothing easy everything evil

[delicate bloom]

nothing nothing

[earnest cloak]

everything nothing

64 bit cat driver when

[delicate bloom]

64 bit cat driver some day maybe

[earnest cloak]

add cat support

what are you gonna do next actually

[delicate bloom]

uhh

idk

[earnest cloak]

do you have a uhhh

[delicate bloom]

i never expected to get this far really

[earnest cloak]

slab allocator or whatever they call it

[earnest cloak]

understandable

[delicate bloom]

no i have buddy allocator

[earnest cloak]

based

no a slab allocator is a second allocator

over the buddy one

so like

you have a page

and what if a program wants 64 bytes

it wont need the whole page

so there is a second allocator which splits up pages into [insert number here] byte segments

[delicate bloom]

ohhh so it has smaller segments instead of full pages?

[earnest cloak]

if your program thingamabob requests 128 bytes then just feed it two 64 byte segments

[earnest cloak]

somewhat yeah

it's a page in a page

i need to add that into my os as well

idk a slab allocator is a specific implementation though

it's used in solaris iirc

[delicate bloom]

eh for now buddy allocator alone works, maybe a slab allocator can be added later on

[earnest cloak]

maybe idk

might be a waste of memory though

how big are your pages

[delicate bloom]

i forgor lemme check 1s

#define PAGE_SIZE 0x1000

so 4096 bytes

[earnest cloak]

the classic 4096 bytes

so like it wont waste too much memory

i was asking because you might have like 4 mb huge pages

in that case that would be concerning

[delicate bloom]

4 mb pages arent that great for just buddy allocators without slab allocator cause lots of waste then

[earnest cloak]

true

id probably have to implement slab in my case because i have a few memory constraints

[delicate bloom]

like what?

[earnest cloak]

like 400 to 1500 mb of ram

i mean its still a lot

the 400 mb might just overflow fast on that poor pentium 3

[delicate bloom]

oof

[earnest cloak]

yeah :/

im considering having 64 bit support (not switching outright) but idek

[delicate bloom]

my qemu flags use 8G memory:
QEMUFLAGS := -m 8G -serial stdio
-device VGA,xres=800,yres=600

[earnest cloak]

mine uses 4 gb

max for 32 bit unless PAE (page addr extension)

which makes that 64 gb i think

[delicate bloom]

32 bit then 4G makes sense, im using Limine tho so 8G is fine in my case

plus my host computer has 64G

[earnest cloak]

im also using limine but with a different boot protocol (multiboot2)

[earnest cloak]

i have 16

[delicate bloom]

o

[earnest cloak]

o

[delicate bloom]

i just spilt a drink all over my desk

o

[earnest cloak]

clean up your table

o

[delicate bloom]

i just cleaned up my table

o

[earnest cloak]

oof
o

i meant nice
o

[delicate bloom]

yes

o

[earnest cloak]

idk how to stop talking with

o

infinite loop of
o

[delicate bloom]

ooooo

[earnest cloak]

gnome disk utility fucked up my usb

o

[delicate bloom]

o no
o

[earnest cloak]

i wanted windows xp

o

[delicate bloom]

oof
o

[earnest cloak]

also can i shamelessly give you my os thread as well

o

o

[delicate bloom]

yes
o

[earnest cloak]

#1402126181884625098

o

[delicate bloom]

o very nice o

[earnest cloak]

indeed

o

[delicate bloom]

how long have u been working on it?

o

[earnest cloak]

uhhhhh

o

idk

o

right after i nuked my last os

o

[delicate bloom]

i checked its a month or so
o

[earnest cloak]

nice

o

[delicate bloom]

mine has been in the works for around two weeks
o

[earnest cloak]

also can i friend you for the funnies and also lets stop talking with o im going insane

o

[earnest cloak]

productive as shit

o

[delicate bloom]

yeses

[earnest cloak]

yeses

sent

ok anyways we survived the o

what was it for anyways

[delicate bloom]

accepted

[delicate bloom]

idk

[earnest cloak]

idk either

[lofty axle]

It is not

NVMe is so easy to get going

[earnest cloak]

fair

[delicate bloom]

how?

you need to do pci and mmio and other stuff, right?

[delicate bloom]

added PIT handler

[lofty axle]

which is not really hard

mmio isn’t an argument either; you access lapic and ioapic via mmio

[delicate bloom]

i guess

just seems like a lot

[shrewd glen]

nvme is pretty easy yeah

only thing easier than it is virtio

[lofty axle]

yeah

ig if you want to test out on real hardware, nvme probably is the easiest way

[delicate bloom]

anyways my os boots on real hardware just tested it, i think the vfs might be a bit unstable for both vm and real hardware right now, but thats not too big of a deal... i hope...

[lofty axle]

you probably want to implement locks

[delicate bloom]

probably

but thats enough dev for today i think

[lofty axle]

probably, very soon

[earnest cloak]

only now??

are my priorities weird everyone seems to do a shit ton before PIT

[delicate bloom]

idk, i didnt think about PIT cause i kind of wanted the pmm/vmm and heap, then i thought about a vfs, and only then i thought about PIT

[earnest cloak]

shit i need a heap

[delicate bloom]

yes... yes, you do

[earnest cloak]

I WILL NEVER BE DONE WITH THE MEMORY MANAGERS

[delicate bloom]

YOU JUST MANAGE MEMORY!!!

AHHH

[earnest cloak]

YOU CANT MANAGE MEMORY A SINGLE WAY

https://tenor.com/view/sisyphus-rock-mp4-transparent-color-gif-11114772717737196968

[delicate bloom]

JUST CAST THE MANAGE MEMORY SPELL!!!

[earnest cloak]

uhhhh

[delicate bloom]

i cast Manage Memory!!

[earnest cloak]

sudo chatgpt --prompt "manage memory" --force --give-code

[delicate bloom]

sudo chatgpt --prompt "manage memory" --force --give-code --big-smarts

got to make sure it has the big smarts!

[earnest cloak]

yes

if no big smarts

the world ends or something idk

[earnest cloak]

no wait thats called heap

i apologize to the air os person

[delicate bloom]

carl