Nyaux | Operating System Development | Page 2

surreal path Apr 21, 2024, 9:05 PM

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😭

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how much memory should i allocate for the entire queue,

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since like

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they will be growing and shrinking

finite summit Apr 21, 2024, 9:06 PM

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sizeof(queue)

surreal path Apr 21, 2024, 9:06 PM

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and shi

finite summit Apr 21, 2024, 9:06 PM

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the queue is a linked list

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not an array

surreal path Apr 21, 2024, 9:06 PM

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okay so just allocate memory for each thread_t struct, and have that link

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cool

surreal path Apr 21, 2024, 9:10 PM

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finite summit the queue is a linked list

okayyyy

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so i setup a "thread" i guess to represent the kernel

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okayyy

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okay it worked as expected

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i guess i have a "thread queue" now

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@finite summit okay what should i do now 😭

kind root Apr 21, 2024, 9:23 PM

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bruh this aint a scheduler

surreal path Apr 21, 2024, 9:23 PM

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what is it then

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kind root Apr 21, 2024, 9:23 PM

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this just memcopies regs

wicked loom Apr 21, 2024, 9:23 PM

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it's spinup code, i guess

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ideally spinup code should be separate from the scheduling algorithm

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that said this is once again a purity argument just like yesterday and vmms vs not-a-vmm

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i mean, this is more of a reasonable argument

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at least it's not just semantics/definitions

kind root Apr 21, 2024, 9:25 PM

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have u looked at switch task?

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it literally doesnt switch task

kind root Apr 21, 2024, 9:25 PM

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wicked loom that said this is once again a purity argument just like yesterday and vmms vs n...

that aint it

wicked loom Apr 21, 2024, 9:25 PM

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scheduling algorithm: raw maths, portable
spinup code: platform specific, not portable

wicked loom Apr 21, 2024, 9:26 PM

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kind root have u looked at switch task?

yeah, i am talking about what will be there ;p

kind root Apr 21, 2024, 9:26 PM

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surreal path <@841762704766140486> okay what should i do now 😭

implement swtich_task

surreal path Apr 21, 2024, 9:27 PM

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kind root implement swtich_task

to make sure i understand, what is switch task's job. load the registers, switch the pagemap and jump to rip?

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sorry if this sounds stupid ☠️

kind root Apr 21, 2024, 9:27 PM

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to switch task to the context provided

surreal path Apr 21, 2024, 9:29 PM

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kind root to switch task to the context provided

okay so load registers, switch pagemap, jump to rip

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okay

kind root Apr 21, 2024, 9:29 PM

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well rip is also a register

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so if u load it

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u already jumped to it

surreal path Apr 21, 2024, 9:29 PM

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yea

wicked loom Apr 21, 2024, 9:29 PM

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technically rip isn't quite a register

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at least not in the normal sense, on x86

kind root Apr 21, 2024, 9:30 PM

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yeah

wicked loom Apr 21, 2024, 9:30 PM

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i assume when they say registers they meant more like GPRs and control registers

surreal path Apr 21, 2024, 9:32 PM

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i really dont know what to do, is switch_task called when an interrupt happens? is this at least correct

wicked loom Apr 21, 2024, 9:32 PM

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it's just a function

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you call it wherever you think it is appropriate to do so

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which could be from a scheduler

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which itself could be triggered by an interrupt

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(this is how it is done in Vinix/Lyre)

surreal path Apr 21, 2024, 9:33 PM

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okay then triggered from an interrupt

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lets go

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okay so for the sched interrupt i should probs have it without the pop instructions cause yea

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or it doesnt rlly matter anyway

surreal path Apr 21, 2024, 10:02 PM

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i dont know what im doing

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😔

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i rlly do not know how to implement a scheduler, i dont know how its supposed to be implemented

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😭

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i think i may have a case of the big stupid

finite summit Apr 21, 2024, 10:06 PM

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https://wiki.osdev.org/Scheduler

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https://wiki.osdev.org/Multitasking_Systems

surreal path Apr 21, 2024, 10:18 PM

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finite summit https://wiki.osdev.org/Scheduler

oberrow does each thread have its own stack?

finite summit Apr 21, 2024, 10:23 PM

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indeed

surreal path Apr 21, 2024, 10:24 PM

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finite summit indeed

so gotta have thread store the base and stack pointer for this stack

finite summit Apr 21, 2024, 10:25 PM

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indeed

surreal path Apr 21, 2024, 10:30 PM

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finite summit indeed

okay heres what im gonna do

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finite summit Apr 21, 2024, 10:31 PM

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cool

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lgtm

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except maybe the page map should be in cpu_context_t

surreal path Apr 21, 2024, 10:31 PM

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yea fair

finite summit Apr 21, 2024, 10:31 PM

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as that's related to the context of the thread and not the thread itself

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also you might want to consider storing the tid of the thread in thread_t

surreal path Apr 21, 2024, 10:32 PM

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tid?

finite summit Apr 21, 2024, 10:32 PM

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thread id

surreal path Apr 21, 2024, 10:32 PM

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fair

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okay so function switch_task will just get the next thread in the queue then switch_context will be an asm stub to load the context?

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yea?

finite summit Apr 21, 2024, 10:39 PM

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yeah

surreal path Apr 21, 2024, 10:40 PM

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okay now i have to somehow get this struct from c into asm and use it, since im getting the address of the context struct into rdi i guess thats how ill access it

surreal path Apr 21, 2024, 10:43 PM

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finite summit yeah

should i switch to the pagemap first?

finite summit Apr 21, 2024, 10:44 PM

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doesn't really matter what order you do it in

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I just do it in that order because I can just add rdi, size_of_member

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and continue on with the next element

surreal path Apr 21, 2024, 10:45 PM

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kk

surreal path Apr 21, 2024, 10:47 PM

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finite summit I just do it in that order because I can just `add rdi, size_of_member`

this is gonna be painfully long

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and what if i get to the instruction where i have to like

finite summit Apr 21, 2024, 10:47 PM

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just mov rsp, rdi and popaq

surreal path Apr 21, 2024, 10:48 PM

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oh fair

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lmao

finite summit Apr 21, 2024, 10:48 PM

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then of course you can skip over any int number/error code things

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and iretq

surreal path Apr 21, 2024, 10:49 PM

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finite summit then of course you can skip over any int number/error code things

okay

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this should work then

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i think

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how can i like test this

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i dont have the interrupt for a scheduler setup, how is this gonna like work with the isr stubs

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im like rlly confused

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@finite summit im gonna like eat u i swear (not sexual intent)

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😠

surreal path Apr 21, 2024, 10:58 PM

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surreal path <@841762704766140486> im gonna like eat u i swear (not sexual intent)

the fact that i have to say that

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shows how we have devolved as a society

cinder plinth Apr 21, 2024, 11:00 PM

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ideally you should just pass the stack in every isr stub and have your scheduler one be a normal isr stub

surreal path Apr 21, 2024, 11:01 PM

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cinder plinth ideally you should just pass the stack in every isr stub and have your scheduler...

what?

cinder plinth Apr 21, 2024, 11:02 PM

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fuck

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wish i had my wsl

surreal path Apr 21, 2024, 11:03 PM

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cinder plinth wish i had my wsl

why

cinder plinth Apr 21, 2024, 11:03 PM

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to show you code

surreal path Apr 21, 2024, 11:03 PM

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then just get your wsl setup

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fix ur wsl

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easy

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😎

cinder plinth Apr 21, 2024, 11:03 PM

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https://github.com/nyx-org/gaia/blob/refactor/src/arch/x86_64/intr_machdep.c#L87C10-L87C28

GitHub

gaia/src/arch/x86_64/intr_machdep.c at refactor · nyx-org/gaia

capability-based microkernel. Contribute to nyx-org/gaia development by creating an account on GitHub.

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this'll have to do

cinder plinth Apr 21, 2024, 11:03 PM

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surreal path then just get your wsl setup

idk the drive is corrupted or some shit

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even a fresh debian wont open

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I'll fix it someday

surreal path Apr 21, 2024, 11:41 PM

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ok back from shower

surreal path Apr 22, 2024, 9:52 AM

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cinder plinth https://github.com/nyx-org/gaia/blob/refactor/src/arch/x86_64/intr_machdep.c#L87...

why do you need all those instructions after you call tho since your never rlly gonna run those instructions cause you'll do a context switch and switch to the next thread

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those instructions will never be run

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so why

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are you having those instructions there anyway

finite summit Apr 22, 2024, 10:02 AM

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They might

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Check if anything returns in whatever intr timer handler does

surreal path Apr 22, 2024, 10:05 AM

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finite summit Check if anything returns in whatever intr timer handler does

uhhh yea

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but like

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it shouldnt execute lapic_eoi or the return instruction cause we do a context switch

finite summit Apr 22, 2024, 10:06 AM

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It's probably there for completeness

surreal path Apr 22, 2024, 10:06 AM

#

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and for some reason theres this function call AFTER it??

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after we do the cpu_switch_context

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in the sched_tick function

finite summit Apr 22, 2024, 10:07 AM

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Then what probably happens is context switch just copies the regs

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Into the rsp

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Returns

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Then it returns into intr timer handler

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Which returns into the asm stub

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Which returns into the new thread context

surreal path Apr 22, 2024, 10:10 AM

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finite summit Then what probably happens is context switch just copies the regs

ur right

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it just copies the registers into the frame

surreal path Apr 22, 2024, 10:13 AM

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finite summit Then what probably happens is context switch just copies the regs

also my frame stores rsp and rbp so i dont think i need this cpu_stack_t struct

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makes my life easier ig

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😎

finite summit Apr 22, 2024, 10:34 AM

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What if you want to free the thread stack

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You'd need to keep the base and size somewhere in the thread context

surreal path Apr 22, 2024, 11:33 AM

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finite summit What if you want to free the thread stack

okay fair

finite summit Apr 22, 2024, 11:34 AM

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you should've sent that message one minute later

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then they would've been an hour apart

surreal path Apr 22, 2024, 11:34 AM

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finite summit then they would've been an hour apart

halfmemeright

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im just in the hospital rn

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so kinda hard to like

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do stuff

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when your getting your blood tested and ecg n' stuff

finite summit Apr 22, 2024, 11:35 AM

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uhh

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maybe wait until you are discharged

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from the hospital

surreal path Apr 22, 2024, 11:35 AM

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no 😠

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OSDEV NEVER SLEEPS

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https://tenor.com/view/gentleman-giga-chad-sigma-male-gif-25702945

Tenor

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https://tenor.com/view/please-respect-the-sigma-please-respect-the-chika-chika-rizz-sigma-chika-rizz-chika-gif-14729089138670968928

Tenor

wicked loom Apr 22, 2024, 11:36 AM

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the ishowspeed incident of 2023

surreal path Apr 22, 2024, 11:36 AM

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wicked loom the ishowspeed incident of 2023

☠️

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mint suki more like mint coki which also means mint cookie so that comfirms that mintsuki is a mint cookie in real life

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😱

wicked loom Apr 22, 2024, 11:37 AM

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mint chip

surreal path Apr 22, 2024, 11:38 AM

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chippi chippi chapa chapa

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https://tenor.com/view/chipi-chipi-chipi-chipi-chipi-chapa-chapa-cat-cat-chipi-gif-3982040863797256894

Tenor

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galaxybrain

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im big brain chat

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(not really)

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this should be epic gamer

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this should actually work now

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but i need

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a function to like

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create threads

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okay lets make a create_thread function or smthin

surreal path Apr 22, 2024, 12:27 PM

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😎

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lets go

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😎 ->->->your mom

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hmmm weirdddd

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its page faulting at the if statment

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and the rip of the current stack frame is the hcf function in main.c (which is what i do after sched_init)

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i triggered the interrupt manually

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in sched_init

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okay fixed that but now its halting somewhere

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oh so the instruction where i try to pop r15 causes it to go broken

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okay so this is causing everything to go fkn'd up

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dont know why

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okay i fixed

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but still triple faulting

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probs gp'rd

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MORE DEBUGIGGN!!!!

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cr3 before switch, cr3 after switch

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yea somethings wrong here

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tf 😭

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oh wait no its valid

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so if what im doing is valid

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why is it triple faulting, this stack should be mapped????

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oh wait

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forgot to cast

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to address

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☠️

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still triple faults

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!

rigid fable Apr 22, 2024, 1:11 PM

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surreal path oh so the instruction where i try to pop r15 causes it to go broken

can you show how you are pushing the registers/err+num too?

surreal path Apr 22, 2024, 1:11 PM

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rigid fable can you show how you are pushing the registers/err+num too?

sure

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isr_stub_32:
    push 0 ; fake error code lmao
    push rbp
    push rax
    push rbx
    push rcx
    push rdx
    push rsi
    push rdi
    push r8
    push r9
    push r10
    push r11
    push r12
    push r13
    push r14
    push r15
    push 32
    mov rax, 32
    mov rdi, rsp ; put value of stack pointer into paramter 1 of c interrupt handler
    mov rax, [idt_handlers + rax * 8]
    call rax
    mov rsp, rdi
    add rsp, 8 ; skip int number
    pop r15
    pop r14
    pop r13
    pop r12
    pop r11
    pop r10
    pop r9
    pop r8
    pop rdi
    pop rsi
    pop rdx
    pop rcx
    pop rbx
    pop rax
    pop rbp
    add rsp, 8 ; skip fake error code
    iretq

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this is the stub

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cpu registers look like this

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wtf

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rsp doesnt look valid

rigid fable Apr 22, 2024, 1:16 PM

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as you can see here the x86 processors (amd64) do not support push imm64, which you are trying to do with pushing the value 32. You are then trying to skip that 4 byte value by adding 8 bytes.

surreal path Apr 22, 2024, 1:17 PM

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rigid fable as you can see here the x86 processors (amd64) do not support ```push imm64```, ...

what?

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oh

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☠️

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wait

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lemme fix this

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push QWORD 32

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okay

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okayokay

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i get u

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still triple faulting tho

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lemme see log

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this time a general protection fault and OH MY GOD

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WTF

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WHY DO THE REGISTERS LOOK ALL FUCKED LIKE THAT

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😭

rigid fable Apr 22, 2024, 1:24 PM

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Let me write it better, with some extra research

surreal path Apr 22, 2024, 1:24 PM

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okay

rigid fable Apr 22, 2024, 1:24 PM

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In hope someone else reads this, and improves instead of just stating it is wrong

surreal path Apr 22, 2024, 1:29 PM

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rigid fable In hope someone else reads this, and improves instead of just stating it is wron...

yep

rigid fable Apr 22, 2024, 1:35 PM

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The issue: when using the instruction push 32
both NASM and FASM generate the same as push byte 32
which means they generate the values 0x64 0x20
What you may want to do is push qword 32
Unfortunately that is not possible on the amd64 instruction set.
From the image above you can see there is no push imm64 instruction.
On a side note:
NASM will simply continue to produce a push byte 32
FASM will produce a push dword 32

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now. You are probably trying to get the number as a 64 bit value (uint64_t in the struct) and you are also trying to add 8 to the rsp, while assuming that the number is 64bit wide

surreal path Apr 22, 2024, 1:37 PM

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rigid fable now. You are probably trying to get the number as a 64 bit value (uint64_t in th...

wait

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you may be right

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i know how to fix this

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please wait

rigid fable Apr 22, 2024, 1:37 PM

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I would also just write a macro in assembly to easily generate the push num push err and then jump to a common stub

surreal path Apr 22, 2024, 1:38 PM

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rigid fable The issue: when using the instruction ```push 32``` both NASM and FASM generate ...

so because i cant really push a 64 bit number

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heres what ill do

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im gonna make the interrupt number just an int

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and add rsp, 4

rigid fable Apr 22, 2024, 1:38 PM

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can you show me your struct?

surreal path Apr 22, 2024, 1:38 PM

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rigid fable can you show me your struct?

yea

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struct StackFrame
{
    uint64_t intnum, r15, r14, r13, r12, r11, r10, r9, r8;
    uint64_t rdi, rsi, rdx, rcx, rbx, rax;
    uint64_t rbp, error_code, rip, cs, rflags, rsp, ss;
} __attribute__ ((packed));

what it looks like currently now

kind root Apr 22, 2024, 1:40 PM

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rigid fable The issue: when using the instruction ```push 32``` both NASM and FASM generate ...

u cant push a byte lol

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it pushes the byte as a qword

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so their code is right

surreal path Apr 22, 2024, 1:41 PM

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im gonna decompile and see what the code looks like

kind root Apr 22, 2024, 1:41 PM

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misaligned pushes are not a thing

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in 32 bit mode all pushes are 32 bits, in 64 bits - 64

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upper bytes are zeroed

surreal path Apr 22, 2024, 1:42 PM

#

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this is decompiled

surreal path Apr 22, 2024, 1:42 PM

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kind root in 32 bit mode all pushes are 32 bits, in 64 bits - 64

yea ur right

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so WHATS CAUSING IT TO FKN THE STACK 😭

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it should just work

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like what the actual fuck

rigid fable Apr 22, 2024, 1:45 PM

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surreal path it should just work

why are you putting the value in rdi in rsp? Are you expecting it to be some value?

surreal path Apr 22, 2024, 1:45 PM

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rigid fable why are you putting the value in rdi in rsp? Are you expecting it to be some val...

it should be rax

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sorry

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MFS

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WE HAVE SCHEDULING

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🥳

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WE HAVE A SCHEDULER

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WE HAVE A FUCKING WORKING SCHEDULER

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CHAT

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LETS FKN GOOOOOO

rigid fable Apr 22, 2024, 1:46 PM

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Do not be happy. You should still check for major bugs in your code

surreal path Apr 22, 2024, 1:46 PM

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rigid fable Do not be happy. You should still check for major bugs in your code

"Do not be happy" man let me just have this moment come on 😭

rigid fable Apr 22, 2024, 1:46 PM

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are you doing this stub for each interrupt?

surreal path Apr 22, 2024, 1:46 PM

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rigid fable are you doing this stub for each interrupt?

no just for this one

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cause it returns value

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which goes into rax

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yea

rigid fable Apr 22, 2024, 1:47 PM

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is this the timer interrupt? Why do you want it to return a value?

surreal path Apr 22, 2024, 1:47 PM

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rigid fable is this the timer interrupt? Why do you want it to return a value?

this is the scheduler interrupt

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sure "timer" interrupt

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i need to return the stack frame

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cause yea

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to reload the registers

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@finite summit omar guess who has scheduling

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i do 😎

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@kind root will i try and setup uacpi maybe now? halfmemeright

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i have a scheduler

kind root Apr 22, 2024, 1:56 PM

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i mean give it a try

surreal path Apr 22, 2024, 1:56 PM

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kk

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😎

kind root Apr 22, 2024, 1:56 PM

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it doesnt need a scheduler unless u want event which u dont at this point

surreal path Apr 22, 2024, 1:56 PM

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kind root it doesnt need a scheduler unless u want event which u dont at this point

i have a scheduler now so we can have event whatever that is

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😎

kind root Apr 22, 2024, 1:57 PM

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events are things like power button presses etc

surreal path Apr 22, 2024, 2:13 PM

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https://github.com/UltraOS/uACPI/blob/master/include/uacpi/kernel_api.h what things are required to be implmented

GitHub

uACPI/include/uacpi/kernel_api.h at master · UltraOS/uACPI

A portable and easy-to-integrate implementation of the Advanced Configuration and Power Interface (ACPI) - UltraOS/uACPI

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in order to init

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and create the acpi namespace

surreal path Apr 22, 2024, 2:14 PM

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surreal path i have a scheduler now so we can have event whatever that is

also i dont have smp working yet and my scheduler doesnt support smp at the moment

kind root Apr 22, 2024, 2:18 PM

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surreal path and create the acpi namespace

Depends, try and find out

surreal path Apr 22, 2024, 2:19 PM

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kind root Depends, try and find out

kk

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lemme just test my scheduler

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with 2 THREADS????

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😱

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2 kernel threads

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what will happen chat

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we have 2 threads working

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finite summit Apr 22, 2024, 2:23 PM

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surreal path https://github.com/UltraOS/uACPI/blob/master/include/uacpi/kernel_api.h what thi...

probably everything but the irq things

surreal path Apr 22, 2024, 2:23 PM

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finite summit probably everything but the irq things

i dont have io

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i dont have disk drivers

finite summit Apr 22, 2024, 2:24 PM

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io is port io

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outb()

surreal path Apr 22, 2024, 2:24 PM

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oh

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lmao

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☠️

finite summit Apr 22, 2024, 2:24 PM

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and stuff

kind root Apr 22, 2024, 2:24 PM

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surreal path i dont have disk drivers

Bruh

finite summit Apr 22, 2024, 2:24 PM

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My kernel is so cool that it can implement all of the kernel api

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without bugs*

kind root Apr 22, 2024, 2:24 PM

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Why would acpi need disk drivers

surreal path Apr 22, 2024, 2:24 PM

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IDK

finite summit Apr 22, 2024, 2:24 PM

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finite summit without bugs*

*I hope

kind root Apr 22, 2024, 2:25 PM

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finite summit My kernel is so cool that it can implement all of the kernel api

Yes

surreal path Apr 22, 2024, 2:25 PM

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what is this for????

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huh??????

finite summit Apr 22, 2024, 2:25 PM

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it's a handle type thing

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that is for port io on x86-64

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read my kernel api code

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https://github.com/oberrow/obos/blob/master/src/libs/uACPI/kernel_api.cpp#L429

GitHub

obos/src/libs/uACPI/kernel_api.cpp at master · oberrow/obos

I was bored... Contribute to oberrow/obos development by creating an account on GitHub.

kind root Apr 22, 2024, 2:33 PM

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surreal path what is this for????

Abstraction over port io

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Acpi is not x86 only

sleek gazelle Apr 22, 2024, 2:56 PM

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yeah but port io is x86 only

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acpi isn't x86 exclusive though

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its just there for x86 pcs with acpi

kind root Apr 22, 2024, 2:57 PM

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sleek gazelle yeah but port io is x86 only

No it isn't

sleek gazelle Apr 22, 2024, 2:57 PM

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?

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mmio != port io

kind root Apr 22, 2024, 2:57 PM

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Port io is a thing on all architectures

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On some its done as mmio tho

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Not a separate instruction

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Run qemu-system-arm and do info pci

sleek gazelle Apr 22, 2024, 2:59 PM

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yes it does exist on architectures other than x86 but doesn't the architectures supported besides x86 don't have port io?

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only mmio?

kind root Apr 22, 2024, 2:59 PM

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No

sleek gazelle Apr 22, 2024, 2:59 PM

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you're just making it more confusing man

kind root Apr 22, 2024, 2:59 PM

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PCI has io ranges on every architecture

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Dont shoot the messenger lol

sleek gazelle Apr 22, 2024, 3:00 PM

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i was talking about port io as in the ones in x86

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not pci

kind root Apr 22, 2024, 3:00 PM

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Yes I was talking about that as well

sleek gazelle Apr 22, 2024, 3:00 PM

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which means its only available on x86 and other architectures with port io

kind root Apr 22, 2024, 3:01 PM

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No

haughty kite Apr 22, 2024, 3:08 PM

#

kind root Port io is a thing on all architectures

question: why does uacpi need to talk to pci

tawdry mirage Apr 22, 2024, 3:09 PM

#

aml can talk to pci

kind root Apr 22, 2024, 3:10 PM

#

haughty kite question: why does uacpi need to talk to pci

Aml often accesses PCI

haughty kite Apr 22, 2024, 3:10 PM

#

ah of course

kind root Apr 22, 2024, 3:10 PM

#

All power management and chipset specific stuff is there

surreal path Apr 22, 2024, 3:31 PM

#

kind root On some its done as mmio tho

what is mmio

finite summit Apr 22, 2024, 3:37 PM

#

memory mapped io

wide nexus Apr 22, 2024, 3:41 PM

#

timer and scheduler

surreal path Apr 22, 2024, 3:41 PM

#

wide nexus timer and scheduler

i have a scheduler

wide nexus Apr 22, 2024, 3:41 PM

#

jk idk u do u

#

thats how I did it

surreal path Apr 22, 2024, 3:41 PM

#

i have a scheduler

#

how do i get like

#

a timer

#

how do even

#

timers work

wide nexus Apr 22, 2024, 3:41 PM

#

pit?

#

hpet acpi timerw

#

u should look into pit first

surreal path Apr 22, 2024, 3:42 PM

#

i dont think ill be touching pit

#

thats like

#

legacy crust

wide nexus Apr 22, 2024, 3:42 PM

#

but it works wonders for simple schedulers

#

anyways if u want something new then go with acpi timers

#

"new"

#

new enough ig

finite summit Apr 22, 2024, 3:53 PM

#

I use HPET for calibrating the LAPIC timers

surreal path Apr 22, 2024, 7:12 PM

#

smp looks way too complex

#

i dont think my os will have smp

#

thats a feature!

#

!!!

#

😱

elder shoal Apr 22, 2024, 7:38 PM

#

surreal path i dont think my os will have smp

If you change your mind later youll have a lot of fun

surreal path Apr 22, 2024, 7:38 PM

#

elder shoal If you change your mind later youll have a lot of fun

why

#

how is smp fun

elder shoal Apr 22, 2024, 7:40 PM

#

Fun as in you will have to redo a lot of things because they werent built with smp in minds

surreal path Apr 22, 2024, 7:41 PM

#

elder shoal Fun as in you will have to redo a lot of things because they werent built with s...

😭

#

thats for

#

future me to deal with

#

😎

finite summit Apr 22, 2024, 8:50 PM

#

in my previous kernel

#

it took me weeks to fix all smp-related bugs

#

I recommend you at least code with SMP in mind

#

So you don't feel like shooting yourself if you ever change your mind

surreal path Apr 22, 2024, 10:11 PM

#

ummmm

haughty kite Apr 22, 2024, 10:11 PM

#

whats the problem?

#

string.h is the header that contains like strcmp and shit

kind root Apr 22, 2024, 10:11 PM

#

read the readme my man

surreal path Apr 22, 2024, 10:11 PM

#

reading it

#

what are theese for???

cinder plinth Apr 22, 2024, 10:13 PM

#

printf

surreal path Apr 22, 2024, 10:13 PM

#

cinder plinth printf

?

cinder plinth Apr 22, 2024, 10:14 PM

#

these are for printf

surreal path Apr 22, 2024, 10:14 PM

#

i dont have printf

#

i have my own functions for logging sure

#

but i dont have the actual "printf" implemented

kind root Apr 22, 2024, 10:15 PM

#

this is unrelated to printf

#

well it is and isnt

#

its the standard inttypes.h header that your compiler ships

#

you can just include that and copy this

surreal path Apr 22, 2024, 10:15 PM

#

i use gcc

cinder plinth Apr 22, 2024, 10:15 PM

#

kind root this is unrelated to printf

I mean

#

PRI literally means print doesnt it

kind root Apr 22, 2024, 10:16 PM

#

these specifiers are used inside *printf* functions

kind root Apr 22, 2024, 10:16 PM

#

cinder plinth PRI literally means print doesnt it

yeah i meant more like its unrelated to his logging my bad

kind root Apr 22, 2024, 10:16 PM

#

surreal path i use gcc

gcc ships inttypes.h u can just include that

surreal path Apr 22, 2024, 10:16 PM

#

kind root gcc ships `inttypes.h` u can just include that

it doesnt compile

kind root Apr 22, 2024, 10:16 PM

#

that doesnt tell me anything

surreal path Apr 22, 2024, 10:16 PM

#

kind root Apr 22, 2024, 10:17 PM

#

uhh

surreal path Apr 22, 2024, 10:17 PM

#

it doesnt think the include exists

kind root Apr 22, 2024, 10:17 PM

#

pretty sure that's a freestanding header

surreal path Apr 22, 2024, 10:17 PM

#

tf

#

if it is

#

why isnt it

haughty kite Apr 22, 2024, 10:17 PM

#

kind root pretty sure that's a freestanding header

i dont think so

kind root Apr 22, 2024, 10:17 PM

#

oh well

#

ill just spell it out

#

or rather

#

just copy oberrow's header

haughty kite Apr 22, 2024, 10:18 PM

#

surreal path why isnt it

who knows!

#

im sure it has zero correlation to these screenshots im posting

kind root Apr 22, 2024, 10:19 PM

#

ohh damn lmao

#

inttypes defines that crap? TIL

surreal path Apr 22, 2024, 10:19 PM

#

kind root just copy oberrow's header

wheres his header

#

im looking for it

#

wait

#

found it

kind root Apr 22, 2024, 10:20 PM

#

#define PRIx64 "x"
#define PRIX64 "X"
#define PRIu64 "u"

he does this which doesnt look correct tbh LULW

#

it should be "lx" "lX" and "lu" if using LP64

surreal path Apr 22, 2024, 10:20 PM

#

LP64?

#

i do not follow

surreal path Apr 22, 2024, 10:21 PM

#

kind root ```c #define PRIx64 "x" #define PRIX64 "X" #define PRIu64 "u" ``` he does this w...

no this is what he defines it

kind root Apr 22, 2024, 10:21 PM

#

yeah thats correct

#

oh wait i was looking at his old kernel

kind root Apr 22, 2024, 10:21 PM

#

surreal path LP64?

LP64 is a data model

#

https://en.wikipedia.org/wiki/64-bit_computing#64-bit_data_models

64-bit computing

In computer architecture, 64-bit integers, memory addresses, or other data units are those that are 64 bits wide. Also, 64-bit central processing units (CPU) and arithmetic logic units (ALU) are those that are based on processor registers, address buses, or data buses of that size. A computer that uses such a processor is a 64-bit computer.
Fr...

haughty kite Apr 22, 2024, 10:22 PM

#

kind root inttypes defines that crap? TIL

yep

#

thats why its not freestanding

#

so plz stop using it

kind root Apr 22, 2024, 10:22 PM

#

very smart decision by the standard

haughty kite Apr 22, 2024, 10:22 PM

#

a classic

kind root Apr 22, 2024, 10:23 PM

#

haughty kite so plz stop using it

i mean, it specifically says in the readme

exports a minimal subset of libc helpers that uACPI utilizes. This should only be overriden if your kernel's standard library is fundumentally different from libc.

#

if you dont have inttypes.h u just override the header

surreal path Apr 22, 2024, 10:23 PM

#

doing that doesnt work

#

it still saying

#

that error

kind root Apr 22, 2024, 10:23 PM

#

which

surreal path Apr 22, 2024, 10:24 PM

#

src/ACPI/uACPI/include/uacpi/internal/utilities.h: In function 'uacpi_truncate_phys_addr_with_warn':
src/ACPI/uACPI/include/uacpi/internal/utilities.h:12:48: error: expected ')' before 'PRIX64'
   12 |             "truncating a physical address 0x%"PRIX64
      |                                                ^~~~~~

kind root Apr 22, 2024, 10:24 PM

#

ffs

#

i thought i fixed that..?

surreal path Apr 22, 2024, 10:24 PM

#

?

kind root Apr 22, 2024, 10:25 PM

#

that's supposed to be using UACPI_PRIX64

#

lemme fix that real quick

#

no isolated builds so this never came up

surreal path Apr 22, 2024, 10:26 PM

#

bruh

#

tell me when u fix

#

so i can git clone

kind root Apr 22, 2024, 10:26 PM

#

1 second

cinder plinth Apr 22, 2024, 10:27 PM

#

meanwhile you could just #define PRIX64

kind root Apr 22, 2024, 10:27 PM

#

yeah just do that for now ^

#

have both defined

surreal path Apr 22, 2024, 10:29 PM

#

ok git cloning

kind root Apr 22, 2024, 10:29 PM

#

what

surreal path Apr 22, 2024, 10:29 PM

#

git cloning uacpi?

kind root Apr 22, 2024, 10:29 PM

#

but i didnt update anything LULW

surreal path Apr 22, 2024, 10:29 PM

#

☠️

cinder plinth Apr 22, 2024, 10:29 PM

#

git pull

surreal path Apr 22, 2024, 10:29 PM

#

no

#

i do it

#

the worst way possible

#

😎

kind root Apr 22, 2024, 10:40 PM

#

@surreal path okay git pull

#

thats for finding the issue

surreal path Apr 22, 2024, 10:40 PM

#

ok git cloning

#

@kind root dont have strncmp or strcmp or strnlen or snprintf but compiler didnt complain about that?

#

#

weird

kind root Apr 22, 2024, 10:46 PM

#

Wait until u get to linker

surreal path Apr 22, 2024, 10:46 PM

#

oh do i need these functions

#

i dont have strncmp or strcmp

kind root Apr 22, 2024, 10:46 PM

#

Ofc you do

kind root Apr 22, 2024, 10:47 PM

#

surreal path i dont have strncmp or strcmp

Implement them

surreal path Apr 22, 2024, 10:47 PM

#

kind root Implement them

if i try ill probs make a shitty implementation

kind root Apr 22, 2024, 10:47 PM

#

Steal from somewhere then

surreal path Apr 22, 2024, 10:48 PM

#

kk

kind root Apr 22, 2024, 10:48 PM

#

Also for printf there are stand-alone headers

#

Although I dont remember their names

surreal path Apr 22, 2024, 10:48 PM

#

TRY REMEMBER THEM RN !!!

#

angr

kind root Apr 22, 2024, 10:48 PM

#

There's an stb printf that oberrow implemented I think

cinder plinth Apr 22, 2024, 10:48 PM

#

nanopritnf

kind root Apr 22, 2024, 10:48 PM

#

Or that

surreal path Apr 22, 2024, 10:52 PM

#

stole this strnlen from apple

#

size_t
strnlen(const char *s, size_t maxlen)
{
size_t len;

for (len = 0; len < maxlen; len++, s++) {
    if (!*s)
        break;
}
return (len);

}

#

😎

#

literarly

kind root Apr 22, 2024, 10:53 PM

#

I doubt thats what they use but seems to work

surreal path Apr 22, 2024, 10:53 PM

#

https://opensource.apple.com/source/Libc/Libc-1158.30.7/string/FreeBSD/strnlen.c.auto.html

#

i dont lie

#

!!!

kind root Apr 22, 2024, 10:53 PM

#

I mean thats prob some default fallback

surreal path Apr 22, 2024, 10:56 PM

#

kind root I mean thats prob some default fallback

what is offsetof

kind root Apr 22, 2024, 10:56 PM

#

Its offsetof

surreal path Apr 22, 2024, 10:56 PM

#

what

#

oh thats a function

#

never heard of it before

kind root Apr 22, 2024, 10:56 PM

#

https://en.cppreference.com/w/cpp/types/offsetof

cpp/types/offsetof

surreal path Apr 22, 2024, 10:57 PM

#

time to steal some implmentation for it

#

😎

kind root Apr 22, 2024, 10:57 PM

#

Just include stddef

surreal path Apr 22, 2024, 10:57 PM

#

i did

#

yea it should work

#

ok now its time

#

for kernel api

#

yay

kind root Apr 22, 2024, 10:58 PM

#

Yay

surreal path Apr 22, 2024, 11:02 PM

#

just do this for every function 😎

surreal path Apr 22, 2024, 11:06 PM

#

surreal path just do this for every function 😎

add hhdm offset to phys address?

#

iodk

kind root Apr 22, 2024, 11:07 PM

#

Yes

#

That works

surreal path Apr 22, 2024, 11:08 PM

#

ok ez

surreal path Apr 22, 2024, 11:13 PM

#

kind root Yes

can size be smaller then a page

kind root Apr 22, 2024, 11:14 PM

#

This is a normal malloc

#

So almost always this will be a few tens of bytes

#

Sometimes a few pages

surreal path Apr 22, 2024, 11:14 PM

#

ima do a check

#

to make sure

#

else ill allocate a vmm region

kind root Apr 22, 2024, 11:15 PM

#

That should probably be handled by slab alloc instead but yeah

surreal path Apr 22, 2024, 11:20 PM

#

kind root That should probably be handled by slab alloc instead but yeah

#

tried defining at top of file

#

compiler still complained

kind root Apr 22, 2024, 11:21 PM

#

Do u know how C works?

surreal path Apr 22, 2024, 11:21 PM

#

yes

kind root Apr 22, 2024, 11:21 PM

#

This define must be propagated to all of uACPI

#

So it must me defined by the compiler or at the top of that header

surreal path Apr 22, 2024, 11:21 PM

#

okay

kind root Apr 22, 2024, 11:22 PM

#

If u just put it in that C file it only affects that

#

I mean it cant magically change all callsites right

surreal path Apr 22, 2024, 11:23 PM

#

kind root So it must me defined by the compiler or at the top of that header

okay i tried at the top of the kernel_api.h header

#

didnt work

kind root Apr 22, 2024, 11:24 PM

#

What's the error?

surreal path Apr 22, 2024, 11:24 PM

#

kind root Apr 22, 2024, 11:25 PM

#

I mean

#

It says kernel api header defined it as one parameter

#

U sure u put it in the right place?

surreal path Apr 22, 2024, 11:26 PM

#

kind root U sure u put it in the right place?

yep at the very top

#

after pragma

#

once

#

wait no

#

now its compiled

#

compiling*

kind root Apr 22, 2024, 11:27 PM

#

Huh

surreal path Apr 22, 2024, 11:27 PM

#

okay fixed the issue about UACPI_SIZED_FREES

surreal path Apr 22, 2024, 11:34 PM

#

kind root Huh

what do i do

#

i dont have a timer

#

i dont have ticks

#

i dont have anything

kind root Apr 22, 2024, 11:34 PM

#

Return some random constant number

surreal path Apr 22, 2024, 11:35 PM

#

just random number?

#

any number?

kind root Apr 22, 2024, 11:35 PM

#

46644

surreal path Apr 22, 2024, 11:35 PM

#

kk

kind root Apr 22, 2024, 11:35 PM

#

Lmao

surreal path Apr 22, 2024, 11:35 PM

#

😭

kind root Apr 22, 2024, 11:35 PM

#

Did you actually believe it has some special meaning?

surreal path Apr 22, 2024, 11:35 PM

#

yes

kind root Apr 22, 2024, 11:35 PM

#

In that case

#

Return 384728

surreal path Apr 22, 2024, 11:36 PM

#

☠️

#

i cant do this

kind root Apr 22, 2024, 11:36 PM

#

384726 is known to cause segfaults

kind root Apr 22, 2024, 11:36 PM

#

surreal path i cant do this

Just improvise

surreal path Apr 22, 2024, 11:36 PM

#

kind root Just improvise

tf am i supposed to do i dont have a timer what am i gonna do

#

😭

kind root Apr 22, 2024, 11:37 PM

#

Just dont spin

#

No one will notice I promise

surreal path Apr 22, 2024, 11:37 PM

#

😭

#

okay

#

i dont have a mutex

#

what do i give uacpi

kind root Apr 22, 2024, 11:38 PM

#

Stub out

surreal path Apr 22, 2024, 11:38 PM

#

i can?

kind root Apr 22, 2024, 11:38 PM

#

Anything thats not null

kind root Apr 22, 2024, 11:38 PM

#

surreal path i can?

For basic operations yes

surreal path Apr 22, 2024, 11:38 PM

#

uhhhh

#

i give it 0

#

😎

kind root Apr 22, 2024, 11:39 PM

#

That will be treated as out of memory

surreal path Apr 22, 2024, 11:39 PM

#

uhhh

#

1

#

😎 😎

kind root Apr 22, 2024, 11:39 PM

#

Lmao

surreal path Apr 22, 2024, 11:39 PM

#

😎

kind root Apr 22, 2024, 11:40 PM

#

Yes

surreal path Apr 22, 2024, 11:41 PM

#

instantly happens

kind root Apr 22, 2024, 11:41 PM

#

That's because your kernel is too fast

surreal path Apr 22, 2024, 11:41 PM

#

exactly

#

😎 😎

#

what do i do?

kind root Apr 22, 2024, 11:44 PM

#

What do you think?

#

Same thing u did before

surreal path Apr 22, 2024, 11:44 PM

#

return 1;?

kind root Apr 22, 2024, 11:44 PM

#

Yes

surreal path Apr 22, 2024, 11:44 PM

#

galaxybrain

#

bruh

#

kind root Apr 22, 2024, 11:47 PM

#

Looks like you aren't compiling printf

surreal path Apr 22, 2024, 11:47 PM

#

kind root Looks like you aren't compiling printf

????

#

how

#

ITS RIGHT THERE

#

angr

kind root Apr 22, 2024, 11:47 PM

#

Thats just the header

#

You're probably supposed to compile it somehow

surreal path Apr 22, 2024, 11:48 PM

#

yea the entire thing is the header

kind root Apr 22, 2024, 11:48 PM

#

Read its manual

surreal path Apr 22, 2024, 11:48 PM

#

oh i fixed

#

uh oh !

kind root Apr 22, 2024, 11:49 PM

#

Yeah disable floats

surreal path Apr 22, 2024, 11:51 PM

#

bro

kind root Apr 22, 2024, 11:51 PM

#

Yeah u implement it only in one file, not all of them

surreal path Apr 22, 2024, 11:51 PM

#

only here i did

kind root Apr 22, 2024, 11:52 PM

#

Thats a header file

surreal path Apr 22, 2024, 11:52 PM

#

oh

kind root Apr 22, 2024, 11:52 PM

#

Its copy pasted into every c file

surreal path Apr 22, 2024, 11:52 PM

#

☠️

#

Tf is this

kind root Apr 22, 2024, 11:53 PM

#

Yeah this one you will have to steal

#

Mint had a library for this

surreal path Apr 22, 2024, 11:53 PM

#

give

kind root Apr 22, 2024, 11:53 PM

#

@wicked loom remind us pls

finite summit Apr 22, 2024, 11:54 PM

#

surreal path i cant do this

use hpet

surreal path Apr 22, 2024, 11:54 PM

#

im setting up uacpi

#

im just trying to get it to compile 😭

kind root Apr 22, 2024, 11:55 PM

#

https://github.com/llvm-mirror/compiler-rt/blob/master/lib/builtins/popcountdi2.c

GitHub

compiler-rt/lib/builtins/popcountdi2.c at master · llvm-mirror/comp...

Project moved to: https://github.com/llvm/llvm-project - llvm-mirror/compiler-rt

finite summit Apr 22, 2024, 11:55 PM

#

I mean you could use libgcc

surreal path Apr 22, 2024, 11:55 PM

#

kind root https://github.com/llvm-mirror/compiler-rt/blob/master/lib/builtins/popcountdi2....

yummy

#

uhhh

kind root Apr 22, 2024, 11:56 PM

#

Alternately tell gcc ur running on a cpu with popcnt

surreal path Apr 22, 2024, 11:56 PM

#

kind root Alternately tell gcc ur running on a cpu with popcnt

how do i tell gcc that

tawdry mirage Apr 22, 2024, 11:57 PM

#

kind root <@379163868364275712> remind us pls

https://github.com/mintsuki/cc-runtime

GitHub

GitHub - mintsuki/cc-runtime: Freestanding, integer-only, easy to i...

Freestanding, integer-only, easy to integrate subset of LLVM's compiler-rt libgcc-compatibility functions. - mintsuki/cc-runtime

kind root Apr 22, 2024, 11:58 PM

#

surreal path how do i tell gcc that

-march=nehalem I think

surreal path Apr 22, 2024, 11:58 PM

#

tawdry mirage https://github.com/mintsuki/cc-runtime

i got the library

kind root Apr 22, 2024, 11:59 PM

#

Coo

#

Yeah im predicting your allocator just getting obliterated

surreal path Apr 23, 2024, 12:00 AM

#

IT COMPILED

kind root Apr 23, 2024, 12:00 AM

#

Cool

surreal path Apr 23, 2024, 12:00 AM

#

kind root Yeah im predicting your allocator just getting obliterated

how

#

angr

kind root Apr 23, 2024, 12:00 AM

#

Ask oberrow KEKW

surreal path Apr 23, 2024, 12:00 AM

#

oh no

#

oh noes chat

#

im scared

kind root Apr 23, 2024, 12:00 AM

#

But maybe not who knows

#

Now initialize it

surreal path Apr 23, 2024, 12:00 AM

#

surreal path

probs yes cause this code is sketch

#

so sketch

surreal path Apr 23, 2024, 12:01 AM

#

kind root Now initialize it

ok

kind root Apr 23, 2024, 12:01 AM

#

surreal path so sketch

Well it doesn't zero the memory in calloc sooo

surreal path Apr 23, 2024, 12:01 AM

#

it does

#

my vmm always zeros memory

kind root Apr 23, 2024, 12:02 AM

#

OK then

kind root Apr 23, 2024, 12:03 AM

#

kind root Now initialize it

Oberrow code is good for this

surreal path Apr 23, 2024, 12:03 AM

#

kind root Oberrow code is good for this

show

kind root Apr 23, 2024, 12:03 AM

#

Same place u looked for pri

kind root Apr 23, 2024, 12:04 AM

#

surreal path show

@finite summit

finite summit Apr 23, 2024, 12:04 AM

#

show what, allocator region init code

kind root Apr 23, 2024, 12:04 AM

#

uACPI init code

finite summit Apr 23, 2024, 12:04 AM

#

k

#

https://github.com/oberrow/obos/blob/master/src/oboskrnl/kmain.cpp#L95

GitHub

obos/src/oboskrnl/kmain.cpp at master · oberrow/obos

I was bored... Contribute to oberrow/obos development by creating an account on GitHub.

#

but why mine specifically

surreal path Apr 23, 2024, 12:05 AM

#

just give it rsdp?

kind root Apr 23, 2024, 12:05 AM

#

finite summit but why mine specifically

Its good and all in one place

#

Managarm is more scattered around

kind root Apr 23, 2024, 12:05 AM

#

surreal path just give it rsdp?

Yes

surreal path Apr 23, 2024, 12:05 AM

#

kk

#

does limine give the rsdp address + hhdm

#

or is it a physical address

kind root Apr 23, 2024, 12:07 AM

#

surreal path does limine give the rsdp address + hhdm

Apparently yes

surreal path Apr 23, 2024, 12:07 AM

#

im guessing uacpi wants physical

#

so

#

gonna remove the offset

kind root Apr 23, 2024, 12:07 AM

#

Yee

surreal path Apr 23, 2024, 12:10 AM

#

this might just

#

die

#

well see chat

kind root Apr 23, 2024, 12:10 AM

#

Lets see

surreal path Apr 23, 2024, 12:11 AM

#

INSTANT

#

PAGE FAULT

#

like

#

INSTANT

#

nah thats crazy

kind root Apr 23, 2024, 12:12 AM

#

Lol

surreal path Apr 23, 2024, 12:12 AM

#

nano print shit

wide latch Apr 23, 2024, 12:12 AM

#

love that you didnt rename it from limine-c-template

surreal path Apr 23, 2024, 12:12 AM

#

surreal path Apr 23, 2024, 12:12 AM

#

wide latch love that you didnt rename it from limine-c-template

yea i know crazy 🤯

#

!!

kind root Apr 23, 2024, 12:13 AM

#

Lol

surreal path Apr 23, 2024, 12:13 AM

#

okay now why is nano print shit

#

page faulting

#

hmst

#

chat what am i doing stupid (ive never used va_list)

kind root Apr 23, 2024, 12:14 AM

#

Looks correct to me

surreal path Apr 23, 2024, 12:15 AM

#

so why tf

#

page faulting

#

😭

kind root Apr 23, 2024, 12:15 AM

#

vsnprintf

surreal path Apr 23, 2024, 12:15 AM

#

surreal path Apr 23, 2024, 12:16 AM

#

kind root vsnprintf

difference?

kind root Apr 23, 2024, 12:16 AM

#

kind root vsnprintf

.

#

Takes in a list

surreal path Apr 23, 2024, 12:16 AM

#

lol

kind root Apr 23, 2024, 12:16 AM

#

Yup

surreal path Apr 23, 2024, 12:16 AM

#

why is it saying that

#

what is needed here

#

to "enter acpi mode"

#

or whatever tf

kind root Apr 23, 2024, 12:17 AM

#

raw memory helpers

surreal path Apr 23, 2024, 12:17 AM

#

i no understand

#

me brain 💥

kind root Apr 23, 2024, 12:17 AM

#

Read

#

Header

#

Look at oberrow code

#

Then give up

surreal path Apr 23, 2024, 12:18 AM

#

☠️

kind root Apr 23, 2024, 12:18 AM

#

I'm off to bed but will check your progress tomorrow

surreal path Apr 23, 2024, 12:18 AM

#

okay

#

goodnight

#

!

kind root Apr 23, 2024, 12:18 AM

#

Thx

surreal path Apr 23, 2024, 12:18 AM

#

np

surreal path Apr 23, 2024, 12:34 AM

#

👁️

#

steady ermine Apr 23, 2024, 12:40 AM

#

sucessfully linking a library into an os kernel is a minor achievement in itself anyway

surreal path Apr 23, 2024, 12:40 AM

#

steady ermine sucessfully linking a library into an os kernel is a minor achievement in itself...

i know

#

but

#

soon

#

youll see

#

yes

finite summit Apr 23, 2024, 1:22 AM

#

surreal path

very descriptive and professional variable names we got here

#

uint64_t rsdp nah we got uint64_t shit

steady ermine Apr 23, 2024, 2:45 AM

#

perfect fit to be a ms windows dev

wintry ermine Apr 23, 2024, 10:33 AM

#

Suggestion,
Info -> mrrp
Warn -> nyaa
Error -> kyaa
Panic -> x.x

surreal path Apr 23, 2024, 1:38 PM

#

hi chat im back

#

when i come home from my doctors appointment ill

#

get back to

#

setting up uacpi!

#

@kind root you love my os dont you!!!! because i use uacpi !!!!

surreal path Apr 23, 2024, 1:44 PM

#

wintry ermine Suggestion, Info -> mrrp Warn -> nyaa Error -> kyaa Panic -> x.x

YES YOUR RIGHT

#

!!!!!

#

I SHOULD DO THAT

#

@wintry ermine THAT WOULD BE SO KAWAII >.<

wintry ermine Apr 23, 2024, 1:45 PM

#

surreal path <@297729389741998081> THAT WOULD BE SO KAWAII >.<

Haaai !! x3

surreal path Apr 23, 2024, 1:45 PM

#

wintry ermine Haaai !! x3

x3

wintry ermine Apr 23, 2024, 1:45 PM

#

I'm nyot a catgirl for nyothing 894768044025462804

surreal path Apr 23, 2024, 1:46 PM

#

!!!!

#

real !

#

https://tenor.com/view/catgirl-come-on-already-cat-gif-24598868

Tenor

wintry ermine Apr 23, 2024, 3:35 PM

#

:3

surreal path Apr 23, 2024, 3:43 PM

#

okay i will now try to

#

intialize uacpi

#

will it explode

#

who knows

#

um

#

yea cause basically

#

im allocating pages

#

for very small sizes

#

what should i do @kind root , add another slab to my slab allocator to handle these sizes or ?

kind root Apr 23, 2024, 3:56 PM

#

No idea

#

Oberrow does tho

surreal path Apr 23, 2024, 3:57 PM

#

kind root No idea

i guess

#

ill do what omar does for the billtionith time

#

!!

wintry ermine Apr 23, 2024, 3:59 PM

#

surreal path um

Where the nyanics

#

Nya panics

surreal path Apr 23, 2024, 3:59 PM

#

wintry ermine Where the nyanics

i will soon

#

uhhh

#

still running out of memory

#

#

#

i have these many slabs already

#

is there nothing i can do

#

@kind root

#

wtf do i do

#

it just

#

runs out of memory

tawdry mirage Apr 23, 2024, 4:06 PM

#

how are you running out of memory

#

are you failing to allocate 4 pages?

kind root Apr 23, 2024, 4:07 PM

#

How much memory do you have lol

surreal path Apr 23, 2024, 4:08 PM

#

gave it 3G

#

kind root Apr 23, 2024, 4:08 PM

#

And after 3 allocations u run out of memory?

surreal path Apr 23, 2024, 4:08 PM

#

somehow

#

wait

#

yea wtf

#

its happening in

#

calloc

#

oh

#

andddd

#

of course its my slab allocator

#

oh

#

here

#

slabs are full

#

tf is going on

#

some weird shit is going

#

on

#

wtf

#

theres something VERY

#

weird

#

going on

#

sometimes it page faults

#

sometimes it goes out of memory

#

sometimes it

#

just waits a while

#

THEN goes out of memory

#

wtf

surreal path Apr 23, 2024, 4:23 PM

#

tawdry mirage how are you running out of memory

i dont know whats going on

#

something VERY weird

#

the compiler is doing something

#

everytime i compile and change a few lines that SHOULDNT affect anything

#

i get different error

kind root Apr 23, 2024, 4:24 PM

#

Welcome to oberrow hell

surreal path Apr 23, 2024, 4:24 PM

#

fuck

#

@finite summit is this what you were talking about

#

do i have to

#

redesign my entire

#

memory

#

management

#

for this shit

kind root Apr 23, 2024, 4:25 PM

#

Just

#

Fix the bug

surreal path Apr 23, 2024, 4:25 PM

#

HOW

#

THERES

#

SO MANY

#

FUCKING

#

WEIRD CASES

#

EVERYTIME I CHANGE A LINE OF CODE

kind root Apr 23, 2024, 4:26 PM

#

4HEad just

surreal path Apr 23, 2024, 4:26 PM

#

😭

slow vale Apr 23, 2024, 4:26 PM

#

osdev do be like that sometimes 😂

surreal path Apr 23, 2024, 4:26 PM

#

SOMETIMES IT FAULTS HERE

#

SOMETIMES IT FAULTS THERE

#

SOMETIMES IT RUNS OUT OF MEMORY

#

its my fucking slab allocator

#

HAS

#

to be

slow vale Apr 23, 2024, 4:27 PM

#

surreal path SOMETIMES IT FAULTS HERE

is "node->flags = node" intended?

surreal path Apr 23, 2024, 4:27 PM

#

okay

surreal path Apr 23, 2024, 4:27 PM

#

slow vale is "node->flags = node" intended?

???

#

tf

#

i didnt

tawdry mirage Apr 23, 2024, 4:27 PM

#

node->flags = vmm_head = node

surreal path Apr 23, 2024, 4:27 PM

#

realize

slow vale Apr 23, 2024, 4:27 PM

#

surreal path ???

you got:

node->flags =
vmm_head = node;

surreal path Apr 23, 2024, 4:28 PM

#

☠️

#

chat i just

kind root Apr 23, 2024, 4:28 PM

#

tawdry mirage `node->flags = vmm_head = node`

Lol

surreal path Apr 23, 2024, 4:28 PM

#

fixed but

#

still

#

that stupid

#

that stupid stupid stupid

#

slab allocator

#

FOR SOME REASON

elder shoal Apr 23, 2024, 4:29 PM

#

You should add a register dump to your panic

surreal path Apr 23, 2024, 4:29 PM

#

SLABS SHOULD BE SETUP

#

WTF

#

NO HEAD?

slow vale Apr 23, 2024, 4:30 PM

#

surreal path NO HEAD?

tfw no head

surreal path Apr 23, 2024, 4:31 PM

#

hmmm

elder shoal Apr 23, 2024, 4:33 PM

#

surreal path hmmm

Your header is in the beggining of each page right

surreal path Apr 23, 2024, 4:33 PM

#

elder shoal Your header is in the beggining of each page right

yea

elder shoal Apr 23, 2024, 4:34 PM

#

surreal path yea

I dont think you should be calculating how many objects fit in the slab by dividing the pagesize by the object size then

surreal path Apr 23, 2024, 4:34 PM

#

elder shoal I dont think you should be calculating how many objects fit in the slab by divid...

wdym

elder shoal Apr 23, 2024, 4:34 PM

#

4096 / size

tawdry mirage Apr 23, 2024, 4:34 PM

#

you need to account for the header when computing the amount of elements that fit

surreal path Apr 23, 2024, 4:36 PM

#

tawdry mirage you need to account for the header when computing the amount of elements that fi...

okay so (4096 / size) - sizeof(struct slab_header)

#

that better?

tawdry mirage Apr 23, 2024, 4:36 PM

#

no

#

how large is a slab_entry

surreal path Apr 23, 2024, 4:37 PM

#

idk

#

8 bytes ig

tawdry mirage Apr 23, 2024, 4:38 PM

#

afaicu what you want is a slab_header at the start, then pairs of slab_entry and space for the object?

#

in which case size needs to include the slab_entry size

surreal path Apr 23, 2024, 4:39 PM

#

okay so (4096 + (size * sizeof(struct slab_entry)))

#

correct?

tawdry mirage Apr 23, 2024, 4:39 PM

#

no

surreal path Apr 23, 2024, 4:39 PM

#

okay im stupid

slow vale Apr 23, 2024, 4:40 PM

#

surreal path okay im stupid

bro you're 17 and writing an operating system, "stupid" doesn't come into it

surreal path Apr 23, 2024, 4:40 PM

#

slow vale bro you're 17 and writing an operating system, "stupid" doesn't come into it

my man

#

andy is 15

#

bro got xorg on his os

#

☠️

slow vale Apr 23, 2024, 4:41 PM

#

so? there are people who are 70 who don't know how to use a mouse, cut yourself some slack

surreal path Apr 23, 2024, 4:41 PM

#

tawdry mirage no

whats the correct way then

tawdry mirage Apr 23, 2024, 4:42 PM

#

(4096 - sizeof(slab_header)) / (size + sizeof(slab_entry)) ?

sleek gazelle Apr 23, 2024, 4:44 PM

#

https://github.com/kora-org/ydin/blob/a9f4131c7f1dcdfdd14a01c6bc6a04139203279c/src/arch/x86_64/mm/slab.zig

GitHub

ydin/src/arch/x86_64/mm/slab.zig at a9f4131c7f1dcdfdd14a01c6bc6a041...

A very extendable and versatile hybrid kernel. Contribute to kora-org/ydin development by creating an account on GitHub.

#

use mine as reference i guess

surreal path Apr 23, 2024, 4:46 PM

#

pain

#

sleek gazelle Apr 23, 2024, 4:46 PM

#

also i use slab for allocations bigger than 1024 so it should be fine

elder shoal Apr 23, 2024, 4:46 PM

#

Id send mine but mine is overengineered

#

So wouldnt be helpful

tawdry mirage Apr 23, 2024, 4:47 PM

#

https://github.com/managarm/frigg/blob/master/include/frg/slab.hpp :^)

surreal path Apr 23, 2024, 4:48 PM

#

i cant read c++ code very well

surreal path Apr 23, 2024, 4:48 PM

#

sleek gazelle https://github.com/kora-org/ydin/blob/a9f4131c7f1dcdfdd14a01c6bc6a04139203279c/s...

cant read zig very well either

elder shoal Apr 23, 2024, 4:49 PM

#

https://github.com/Mathewnd/Astral/blob/rewrite/kernel-src%2Fmm%2Fslab.c

GitHub

Astral/kernel-src/mm/slab.c at rewrite · Mathewnd/Astral

x86-64 Operating System. Contribute to Mathewnd/Astral development by creating an account on GitHub.

surreal path Apr 23, 2024, 4:53 PM

#

okay at this point im gonna have to rewrite the entire slab allocator

#

this design is shit

#

i dont understand it cause this was made for my old os

#

which i just yoinked

#

so like

#

yk

elder shoal Apr 23, 2024, 4:54 PM

#

You should read more about slabs to understand them and how to implement them

surreal path Apr 23, 2024, 4:54 PM

#

elder shoal You should read more about slabs to understand them and how to implement them

where can i

#

#Nyaux