int main(); seems more like a variable declaration than anything
#Nyaux
coral dove
broken depot
Most often it's either returning () (a size-less single-state type) or a Result
coral dove
Result? Is that its own data type ?
Or is that kinda just the equivalent of an error code in a C function like return -1;
broken depot
Result is a generic type with two parameters. It stores either an Ok or an Err value and is the de facto way to deal with functions that can return exceptionally.
coral dove
Pov rust actually has error codes that makes sense
broken depot
There's this really nice ? syntax that returns the result if it's Err or unwraps Ok
broken depot
That's the underlying mechanism.
coral dove
Smart
broken depot
Let's move to #programming
coral dove
Bet
thorn bramble
rusties when they find out that rust is, in fact, not memory safe
broken depot
rusties when they find out that rust is, in fact, not memory safe
Rust is memory-safe by default. What it isn't is leak-proof. But Rust defines memory safety to include memory leaks because, realistically, that's not going to crash your program unless you leak a lot of it.
supple robin
rusties when they find out that rust is, in fact, not memory safe
me when i put unsafe around everything and suddenly i can do unsafe things 🤯
broken depot
There's a lot of things you could criticise Rust for but being memory-unsafe is not one of them.
supple robin
eh
rust isn't 100% memory safe
there are a few situations where it fails
and im not talking about leaks
broken depot
there are a few situations where it fails
Like... ?
I'm sorry but if you're going to say the language about memory safety is memory-unsafe, you're going to have to provide actual proof.
supple robin
have you heard about lifetime expansion
broken depot
ofc
supple robin
you probably also know cve-rs then
broken depot
no
broken depot
Those are bugs
And you need to really intentionally do it wrong to get bitten in the ass by it
supple robin
call it a bug, it's still unsound
broken depot
The author literally calls them bugs
supple robin
so? this does not invalidate our argument
as long as this isn't fixed, rust isn't 100% memory safe
broken depot
You were making it sound way worse than it is
supple robin
i don't think so
supple robin
rust isn't 100% memory safe
.
broken depot
rusties when they find out that rust is, in fact, not memory safe
..
supple robin
that's... not me?
lol
in the end it doesn't matter though, because even 1% safety is better than 0
these are nitpicks
broken depot
Most of it seems to be based around an ability to create dangling pointers
Whatever. In the end, both C and C++ let you do this without so much as a single instruction of UB emitted whereas this is entirely because of compiler bugs and is probably classified as UB
(the part after you get the dangling pointer, that is)
hollow goblet
rust isn't 100% memory safe
this is like saying "gcc isn't C-compliant because it has at least 1 bug!!!"
just.. wrong
supple robin
that's not at all what it's like
hollow goblet
it is tho?
supple robin
no
spice yarrow
What's the difference?
hollow goblet
soundness holes are bugs, and not being compliant would be a bug
something to be discovered and fixed
spice yarrow
gcc claims to be c compliant, rust claims to be memory safe
and they both are mostly true, barring a few rare bugs
hollow goblet
and the argument around unsafe is just wrong too, unsafe doesn't mean unsafe
unsafe means "I checked this myself, trust me"
supple robin
and the argument around unsafe is just wrong too, unsafe doesn't mean unsafe
i didnt say that at least
hollow goblet
yea just generally pointing around
supple robin
in my experience, unsafe also carries around the heavy weight of a lot of UB
hollow goblet
if unsafe existing makes rust code not memory safe, by analogy ALL C code has to be not memory safe because even well written C code is in an "unsafe context"
brisk zenith
imo there's a difference between a language being unsafe and an implementation of that language being unsafe. to my knowledge, rust the language is safe, because a theoretical implementation without bugs would have no soundness holes. the reference implementation of rust isn't safe, because it has soundness holes due to bugs
supple robin
if `unsafe` *existing* makes rust code not memory safe, by analogy ALL C code ha...
if one makes that argument, they're full of shit
hollow goblet
if one makes that argument, they're full of shit
yea just pointing the absurdity of the argument around unsafe
supple robin
imo there's a difference between a language being unsafe and an implementation o...
agree
hollow goblet
imo there's a difference between a language being unsafe and an implementation o...
yep. rust prefers to make things impossible just to prove it is safe
rust has had different algorithms for the borrowck, each one increasing the scope of allowed code
supple robin
i do wish rust had a stable abi
spice yarrow
Rust will reject some valid programs, and all* invalid programs
C will accept some invalid programs, and all valid programs
spice yarrow
i do wish rust had a stable abi
What's wrong with using the c abi?
hollow goblet
rust has had different algorithms for the borrowck, each one increasing the scop...
e.g. pre- treed borrows, some code would not compile even if it was perfectly safe because the borrowck's then-algorithm couldn't prove it's safety
spice yarrow
Oh yeah precompiled libs would be really nice
hollow goblet
e.g. pre- treed borrows, some code would not compile even if it was perfectly sa...
now we have treed borrows and more of those cases are allowed
brisk zenith
What's wrong with using the c abi?
there's nothing wrong with the c abi, the problem is that rust says "the rust abi is unspecified"
hollow goblet
and rust dylibs
oh god I want that so much
spice yarrow
But imo it should only be stabilized to the rustc version
supple robin
wut
supple robin
2024 please
hollow goblet
but 2024 is already a thing lol
spice yarrow
I mean they did just release it a few days ago
hollow goblet
That way they can still make improvements to the abi
yea but it should be frozen at some point
supple robin
this
spice yarrow
Yeah it was stabilized in nightly last year
hollow goblet
to make dylibs forwards-compatible
supple robin
stable
nightly
spice yarrow
pseudo stabilized? I'm not fully sure on what it was exactly
hollow goblet
idk what they did but even if there's no spec they could start by freezing it in rustc
like a soft forwards-compatibility guarantee
but not actually a guarantee
just attempting
wait this is nyaux thread
bleak cedar
talking about unrelated compiler bugs in Nyaux shall be punsihed
tender gorge
keep the chat somewhat nyaux related 🥺
ionic musk
Nyauxmaster C compiler when?
broken depot
Nyaux (Kompiles C)
bleak cedar
Nyauc
broken depot
NyauxCC
coral dove
We love you nyaux if you make a c compiler I will never use another ever again
rich trellis
ncc (nyaux c compiler)
bleak cedar
> gcc
broken depot
ncc (Nyaux Compiler Collection) is better than gcc (GNU (is Not Unix) Compiler Collection)
spice yarrow
ncc (Nyaux Compiler Collection) is better than gcc (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU (GNU error recursion limit reached
broken depot
fn gnu() {
println!("GNU (");
gnu();
println!(" is Not Unix)");
}
fn main() {
println!("ncc (Nyaux Compiler Collection)");
println!(" is better than ");
println!("gcc (");
gnu();
println!("Compiler Collection)");
}
;compile ```rs
fn gnu() {
print!("GNU (");
gnu();
print!(" is Not Unix)");
}
fn main() {
print!("ncc (Nyaux Compiler Collection)");
print!(" is better than ");
print!("gcc (");
gnu();
print!("Compiler Collection)");
}
viscid pecanBOT
broken depot
rigid fable
Also I'm pretty sure the recursion would go something like
GNU is Not Unix is Not Unix is not Unix is not Unix is not Unix is not Unix is not Unix is not Unix
hollow goblet
it would assuming you can see the entirety of the infinite length string
wait no
this isn't just opening the acronym
it's GNU (GNU is Not Unix) is Not Unix in this case
but if you just evaled GNU itself
it would be GNU is Not Unix is Not Unix
spice yarrow
Also I'm pretty sure the recursion would go something like
GNU is Not Unix is No...
The fully expanded form can't start with GNU because that is an unexpected acronym. There just can't be a beginning, however we can know it ends with "... is Not Unix is Not Unix is Not Unix"
rigid fable
Anyways, Nyaux stay safe, we hope we'll seeing you soon 🫡
}
tender gorge
sending hugs rayan 🫂 💙
hollow goblet
virtual hug 🫂
spice yarrow
ebon needle
nyaux how are you
tender gorge
we are still thinking of you nyaux 💙
bleak cedar
myaux
bleak cedar
which of those 2?
tardy hull
both >:3
surreal path
im still here
very hard to get horus out
i dont even have
a few minutes
i hate this place
tomorrow they are making a ddecesion
if im staying here long term or not
we will see
i missed yall tho
broken depot
Sending virtual hugs and well wishes
surreal path
thank you
oh yeah @hexed sluice i just wanna say has limine updated significatnly for the time ive been gone? i cant rlly check github is blocked
broken depot
Not in a way that'll break anything. The last major update was before you went in.
broken depot
Looks like some new stuff is happening for a 9.x branch some time in the future?
surreal path
cnat wait for that
love you all
soon ill be back i hope
when they getr my meds working
they will probs let me out
hexed sluice
oh yeah <@563448614509215755> i just wanna say has limine updated significatnly ...
hey! other than v9 being released, not really i guess?
surreal path
hey! other than v9 being released, not really i guess?
ah okay
thanks for letting me know tho
tender gorge
if im staying here long term or not
if i can say anything, please be honest as to how you are feeling to your psychs
surreal path
cause u can upload files onto github
surreal path
if i can say anything, please be honest as to how you are feeling to your psychs
i am
tender gorge
dont lie to try and get out or anything
surreal path
i tell them the meds arent working
surreal path
love ylal cya soon\
hexed sluice
cya
tender gorge
love you too 💙
odd flame
broken depot
have to go
Emotional support msg
bleak cedar
cya 🥺
rigid fable
Yup, we're still waiting for you 🫡
}
steady flume
can't wait to post that one lotr gif
flat nymph
This server is a bit sad without nyauxmaster
broken depot
Nyaux is our GOAT
bleak cedar
I'll download CS2 on my new distro just for Nyaux
surreal path
i have a discharge date
13th of march
@hexed sluice @flat nymph @tender gorge (cant ping more cause bot will ban me or smt but im so excited to say this i needed to ping yall)
ebon needle
13th of march
yay
hexed sluice
yay
broken depot
I just realized that Nyaux is also a fellow computer graphics enjoyer
surreal path
i dabble in it sometimes
:)\
also
as soon as i come back
straight to nyaux work
broken depot
Is 2025 the year of the Nyaux desktop? 
surreal path
yes real
ebon needle
NyauxDE
broken depot
Nyaux windowing protocol
surreal path
omg reall
thorn bramble
holy shit LFG
kind root
13th of march
tender gorge
13th of march
Yay
coral dove
13th of march
LETSGOO
flat nymph
rich trellis
magic kernel
let's fucking goooooooo
ionic musk
Do you feel better and will you continue getting support?
plush hearth
13th of march
Yay
rigid fable
13th of march
DAJE 💪🔥
}
(I always forget the } lol)
hollow goblet
nyaux
supple robin
lfg
steady flume
LFG
rigid fable
Chat we're about a week away from the great return
}
kind root
Well the old version did anyway
thorn bramble
NEVERMIND I AM BLIND
ionic musk
nope he doesn’t
Create a PR right away
kind root
Nice
thorn bramble
ionic musk
Ah good
kind root
No loading indicators which sucks
ionic musk
Make a PR so it prints out every GDT entry
kind root
Spinning / with percentages
ionic musk
printf("loading gdt...");
sleep(1000);
printf("gdt loaded");
coral dove
Make a PR so it prints out every GDT entry
Lowkey that would be hilarious imma do that in mine
silver yarrow
I print out gdt loaded for every CPU
but tbh that is a relic from some debugging session
flat nymph
printf("loading gdt...");
sleep(1000);
printf("gdt loaded");
Also checks the timer infrastructure
marble surge
printf("loading gdt...");
sleep(1000);
printf("gdt loaded");
ability to sleep before GDT 
flat nymph
ability to sleep before GDT <:concern:895722900722696252>
Why not
marble surge
Aren't you supposed to enable GDT first before handling interrupts?
ebon needle
Aren't you supposed to enable GDT first before handling interrupts?
you can use timer's counter
tardy hull
i eat cement
flat nymph
I've just realized Nyaux thread still has more messages than lounge 2 aka uACPI thread
surreal path
hi
i get night leave today
but im too sleepy to talk on disc rn
i love yall btw
@kind root i will make cpu init ok imagine
registers init ok
edgy pilot
registers init ok
don't forget to print out every <register>.... ok
frigid cliff
i love yall btw
🩷
surreal path
dont do anything stupid 🥺
i wont
thorn bramble
kind root
<@353593948523986945> i will make cpu init ok imagine
Letsgo
bleak cedar
hiiii :3
coral dove
don't forget to print out every <register>.... ok
Print out the memory addresses of every single variable
broken depot
i love yall btw
❤️ 
coral dove
i love yall btw
We love you too bro
steady flume
LET'S GOOOOOO
rich trellis
surreal path
itll be alright ^^
surreal path
<:letsgo:1282155513156468747>
currently js tryna get used to being home if yk what i meann
surreal path
i will
kind root
What's next on the nyaux list
surreal path
well
i need to relearn a lot of things
1st
2nd i need to finish devfs
and 3rd idk its hard to focus cause of one of ze meds im waiting to get taken off of
well we will see anyways how things go
kind root
- Uacpi update
surreal path
oh yes 100%
silver yarrow
- marketing, success, money
surreal path
real
broken depot
- monopoly on the OS market
thorn bramble
yooo nyaux welcome back :’)
steady flume
steady flume
can't wait to post that one lotr gif
:^)
hollow goblet
year of the nyaux desktop
orchid dawn
nah nah, nyaux is gonna corner every market segment
not just the year of the nyaux desktop
but the year of the nyaux laptop, the nyaux tablet, the nyaux phone, the nyaux smart watch, the nyaux alarm clock, the nyaux thermostat, the nyaux smart tv, and finally, the nyaux server
oh yeah I forgot, also the nyaux game console
the Switch 2, Xbox One.5, and PS6, will all be running nyaux
tender gorge
when can i eat nyaux branded food
surreal path
devfs is finished?
i thought it wasnt but it seems like past me wrote all the code for me
@kind root any breaking changes with uacpi?
the one in nyaux vs the one rn
surreal path
i thought it wasnt but it seems like past me wrote all the code for me
probs isnt tested
It has been WAY too long
but past me wrote pretty much everything
this is not epic
nvm
changes are not needed
compiles just fine
edgy pilot
does it link though?
edgy pilot
maybe your commit wasn't that old
broken depot
<@353593948523986945> any breaking changes with uacpi?
IIRC kernel API changed in uACPI 2.0
surreal path
IIRC kernel API changed in uACPI 2.0
seems not??
for me at least
maybe i was on a bleeding edge branch idfk
but it ran fine no changes required
broken depot
There was also discussion about C standard library things that uACPI needs (e.g. <string.h> stuff), it's also possible that some details were changed there.
surreal path
it seems that nyaux is not affected
broken depot
Very cool
thorn bramble
we are SO BACK 🔥
surreal path
indeed we are
thorn bramble
im ngl i might just contribute to nyaux instead of trying to make my own shit
i never succeed lol
surreal path
it does actually
thorn bramble
i know i just read the code
surreal path
but they work 96% of the time ™️
thorn bramble
wtf
kind root
<@353593948523986945> any breaking changes with uacpi?
nah
kind root
basically by default uacpi now defaults to expecting the host to implement mem{cmp,move,cpy} etc
surreal path
yea i do
kind root
hopefully thats cool to you
yes
surreal path
i wanna make a kind of debug tool thing for the kernel
like
u can list everything from page mappings to
current threads running to
printing whats mounted on the vfs and et
c
silver yarrow
I can sense a kernel terminal
kind root
if strcmp("ls") print("file.txt")
surreal path
debug shell done
surreal path
`if strcmp("ls") print("file.txt")` <:trl:829316641191886888>
look at my code
its actually
decent this time
void rsh()
{
char buf[256];
int idx = 0;
kprintf("(rsh): ");
inb(0x3F8);
while (true)
{
if (serial_data_ready())
{
char got = (char)inb(0x3F8);
if (got == 127 && idx > 0)
{
kprintf("\b \b");
buf[idx] = '\0';
idx--;
}
else if (got == '\r')
{
kprintf("\r\n");
buf[idx] = '\0';
for (int i = 0; i != 4; i++)
{
if (strcmp(buf, cmds[i]) == 0)
{
switch (i)
{
case 0: goto t; break;
default:
kprintf("commands to do are stubs:c\r\n");
kprintf("(rsh): ");
goto r;
break;
}
}
}
kprintf("not a valid command\r\n");
kprintf("(rsh): ");
r:
idx = 0;
buf[idx] = '\0';
// exit_thread();
// break;
}
else if (got == 127)
{
}
else
{
buf[idx] = got;
kprintf("%c", got);
idx++;
}
}
}
t:
// exit_thread();
}
too pro
lets fucking go
rich trellis
lets fucking go
broken depot
A shell for debugging your kernel?
broken depot
I thought everyone was just using QEMU + GDB
cinder plinth
how do you debug on real hardware then
broken depot
Fair enough actually
cinder plinth
or dump kernel structures
broken depot
Yeah because otherwise you need a hardware debugger
Which does exist but it harder to set up and usually requires a pricy attachment
cinder plinth
You can debug via gdb over serial too
But the kernel knows more about itself than gdb so it can print useful info
tender gorge
Yeah because otherwise you need a hardware debugger
depends what hardware too
wouldnt be surprised if most laptops dont have a way to debug on hardware properly lol
broken depot
Fortunately devkits do tend to have that 
hollow goblet
decent this time
turn it into a kernel debugger
and make your host connect to it over serial
nyauxdb when
surreal path
id rather not for now
its just nice to be able to print mappings
when needed ig
and other stuff
whats next for nyaux was updating uacpi but thats done
i feel so tired
i saw
its fine my bad
hollow goblet
whats next for nyaux was updating uacpi but thats done
do you need a new goal possibly?
if you want you could pick yourself a simple goal to achive in nyaux
surreal path
i just feel like empty cause depression no moticvation to even touch my computer, but
im trying my hardest
hollow goblet
i just feel like empty cause depression no moticvation to even touch my computer...
if you want motivation you need a goal
pick something simple and start moving towards it, but don't pressure yourself
surreal path
thanks ik what u mean
surreal path
the goal isnt the issue
its just the depression is like an anchor im attached to
hard to do much
hollow goblet
then try something you know you will enjoy, sorry if this seems too cliché. I remember a cgp grey video from the pandemic era i think. he says mental and physical health affect each other and it's always easier to improve your physical health which will get the ball rolling to start improving you mentally
I can link to the video if you want, he does a better explanation than me
surreal path
the thing is
nothing brings me joy anymore
if u get me
like ive tried everything
i just feel nothing but depression
its why i jumped into that river from that bridge
i feel hopeless
surreal path
its okay tho im happy that yall are really supportive to me and im just hoping tuesday they change my meds to make me hopefully feel smt
edgy pilot
then try something you know you will enjoy, sorry if this seems too cliché. I re...
improving physical health needs that ball rolling already
tender gorge
its okay tho im happy that yall are really supportive to me and im just hoping t...
dont do anything stupid and dont do the river jump again 🥺 🫂
surreal path
dont do anything stupid and dont do the river jump again 🥺 🫂
i wont
hollow goblet
improving physical health needs that ball rolling already
well imo it's easier to force yourself to walk a few miles or go to the gym even if you don't think you'll enjoy it but idk
cinder plinth
improving physical health needs that ball rolling already
not really
like nixstrap man said
edgy pilot
not for me
hollow goblet
YMMV, these stuff are always personal
tender gorge
like nixstrap man said
who is nixstrap man
cinder plinth
idk fucking rainbow emoji
hollow goblet
sanana lol
tender gorge
idk fucking rainbow emoji
hollow goblet
lol electrode no need to defend me
tender gorge
sorry i just thought sending that would also be slightly funny
hollow goblet
it slightly is
cinder plinth
honestly idc unless I get corrected
hollow goblet
idc unless it has a bad intent
edgy pilot
Both
hollow goblet
@surreal path update us often, ok?
edgy pilot
I don't think anyone here has a bad intent
supple robin
how do you debug on real hardware then
gdbserver
surreal path
no tmpfs
broken depot
tmpfs as in ramfs?
surreal path
yea
surreal path
mhm!
broken depot
What filesystems do you plan to support?
surreal path
ext2 100%
broken depot
Makes sense
BadgerOS already supports FAT (but will get ext2)
At this point it's mainly there to allow some kind of self-update in the future but originally it was because FAT is more widely supported.
ISO9660 (the CD-rom one) is also a potential one because of installation CD memes
edgy pilot
yea
unless tmpfs is made in a french town named tmpfs (supports configurable options) it's just sparkling ramfs
broken depot
Anyway, just giving you some ideas :3 nice to see some Nyaux progress
surreal path
thanks :3
surreal path
dev only has one device lmao
broken depot
/dev/meow?
broken depot
To be fair, BadgerOS doesn't even have a devfs yet so I'm in no place to criticize :P
frigid cliff
yippee
edgy pilot
<:nooo:750466870993223750>
-fsanitize=address
surreal path
letsgo
kind root
surreal path
fds are implemented
were tested in userspace, untested too much in kernel space with the modifications i made to the hashmap.c to support my sized free function
but
it should work and its per process as ud expect
kind root
Bash
kind root
Or dooom
surreal path
fpu saving and storing
kind root
Yes
kind root
Its just xsave and xrstor etc
surreal path
i can work on it i suppose
edgy pilot
you need to check what's supported with cpuid
surreal path
okay
kind root
Blindly assume avx512
surreal path
mhm
just for fun
ill reinit the terminal setting the canvas as the bg
as well as a new font
frigid cliff
edgy pilot
use this and draw emojis (sixels) https://github.com/ilobilo/flanterm
kind root
Cant believe its not upstreamed yet
coral dove
NyauxMake incoming
kind root
Nmake
surreal path
real
edgy pilot
nake?
surreal path
bug
rich trellis
bug <:nooo:750466870993223750>
🪲 bug
surreal path
we have a new bug atm kinda stuck but its good
im waiting til 6am so i can go buy smt to eat
flat nymph
Am I seeing C++ files? 
thorn bramble
that's was nyaux omitting the filename_prefix field of the tar entries
that file belongs somewhere in /usr/include/c++/...
ebon needle
Am I seeing C++ files? <:thonk:575445129863888896>
no it's illusion
kind root
that's was nyaux omitting the filename_prefix field of the tar entries
Did he tar his entire Linux source tree
thorn bramble
no, he tar'd the sysroot he built
kind root
ohh lol
surreal path
@thorn bramble its dying here
worn rain
broken depot
whats a sixel
It's a terminal thing that uses 6 bits of each byte to set 6 pixels in the terminal. I don't recall whether it goes horizontal or vertical but it allows for 2-color bitmap graphics in a terminal emulator
rich trellis
this
so true tho
i feel like that image represents my kernel 101%
none existant rn
surreal path
so
with xsave and xrstor they store and save fpu state
im reading the sdm but im failing to understand how exactly to use the instructions
what am i supposed to do as a kernel for the cpu
etc etc
edgy pilot
what am i supposed to do as a kernel for the cpu
enable the desired floating point extensions, allocate a buffer per thread to save and restore the state, on every user context switch: save and restore
desert haven
what am i supposed to do as a kernel for the cpu
if you dont care about avx (256bit+ regs), you can use fxsave/fxrestore instructions, which take a fixed 512 byte buffer.
For xsave and friends, there's a new control register, xcr0 (extreme control register 0), that determines which extra bits of state are enabled. So there's a bits for enabling fpu regs, xmm/ymm/zmm regs (if supported) and some other state that you may care about. You set the bits you want to save/restore, and then do your save/restore op.
The size of the buffer needed depends on what state is enabled in xcr0 at that time, and a bitfield you pass to the xsave via a gpr. As for getting the size, check cpuid leaf 0xD. It'll give you 2 values: one is the size if everything in xcr0 is enabled, the other is the size for whats currently enabled.
If you want to do lazy switching of the extended state, there's cr0.TS which generates an #NM exception when set and someone tries to access any extended state. So you can catch that, switch the state, then clear the bit until you switch threads.
kind root
I voted for nyaux
surreal path
I voted for nyaux
letsgooo
surreal path
if you dont care about avx (256bit+ regs), you can use `fxsave`/`fxrestore` inst...
thank you sm
surreal path
if you dont care about avx (256bit+ regs), you can use `fxsave`/`fxrestore` inst...
where is the diagram of xcr0 in the sdm
i cannot find it
thanks god
tender gorge
nyaux will support avx 512
based
surreal path
okay ive inited the fpu
now do i need to check on ctx switch if im coming back and coming from userspace and if so run fpu save and fpu store
and
actually i wont worry about this JUST yet
the things for fpu is there, whenever im gonna go straight for userspace i shall remember to ask questions in relation with scheduling and fpu save and store
flat nymph
just steal it from proxima 
surreal path
hexed sluice
lol
broken depot
Very nice, have you seen what BadgerOS does on Kernel panic?
surreal path
what does it do
broken depot
This: #1153085124959809616 message
It's also inspired by obos iirc
Oh it was actually ilobilix where I got the idea
surreal path
im trying to put a file in the tar bro
jinx hates me
hello???
its there
the sysroot doesnt change no matter what
i put in base files it doesnt care
./jinx rebuild base-files solved that
IT WORKED
loading a sixel from my vfs works
😎
worldly condor
surreal path
💙
tender gorge
💙
surreal path
no dw nothing is wrong :3
desert haven
nice, thats cool
surreal path
and how tf am i supposed to have syscalls without userspace and how tf am i supposed to have userspace without preparring a user thread with everything the sysv abi requires AND loading an elf
rigid fable
they gonna stick a needle in me
dw i prob had the same experience like last month
hurts when they put it in
rigid fable
ah
tender gorge
last time i had a blood test was a couple months ago i think
surreal path
and how tf am i supposed to have syscalls without userspace and how tf am i supp...
this is especially something i need to think about
tender gorge
and how tf am i supposed to have syscalls without userspace and how tf am i supp...
syscalls without a userspace
not a thing, syscalls refer to when you change cpu permission/protection levels
molten grotto
why do you need syscalls without userspace
surreal path
>syscalls without a userspace
not a thing, syscalls refer to when you change cpu...
i mean like
the syscall instruction
and like yk what i mean
actual syscalls
molten grotto
for testing purposes™️ you could just have a piece of asm in your kernel that you enter to in usermode
tender gorge
spin up a really simple ring 3 thread or something to test it with
you dont need all of sys v abi
loading a ELF is also actually quite simple
edgy pilot
you don't even need an elf, simple flat binary will do the job
kind root
for testing u can just memcpy kernel code to userspace
this will work fine
just make a stub function
surreal path
anyone got ze bytes of some asm code that does a syscall or smt
anyone wanna post ze raw bytes
edgy pilot
what kind of syscalls do you have
molten grotto
why not just write it yourself in an asm file lol
edgy pilot
you need one first
surreal path
ik
edgy pilot
do int 0x80 or something
surreal path
why not just write it yourself in an asm file lol
oh yeah fair
hexed sluice
they gonna stick a needle in me
first time?
i do that shit more often than i pee at this point
surreal path
first time?
no but it hurts every time
when they start sucking in my vein
i hate that feeling sm
hexed sluice
yep
surreal path
maybe i'm just freaky like that
nahhh thats crazy
for me its like absolute torture
ur hella freaky ig lol
surreal path
ik what u mean
hexed sluice
i don't go out of my way to bleed of course
but like, sometimes i scratch too hard and i start bleeding
i kinda like the feeling
and getting blood drawn is kinda the same
surreal path
i cut my lip a lot, i like the pain and the blood ig from the lip but needles are a no for me
surreal path
and getting blood drawn is kinda the same
bleeding and blood drawn is like completely different for me
ik what u mean thoo
edgy pilot
hexed sluice
i realised i hadn't starred this yet for some reason
surreal path
bru
tender gorge
same lol
surreal path
star this NOW
tender gorge
i have now stared it 🥺
surreal path
number go up, dopamine go up funny
hexed sluice
i forgor, i probably had it starred but on old account
hexed sluice
yes i did
surreal path
tender gorge
number go up, dopamine go up funny
you having dopamine is good 🥺
surreal path
instant shamless plug
hexed sluice
done
surreal path
surreal path
https://github.com/robotman2412/KiloElfLoader
nah ill load the elf myself
ill impl syscalls myself just after bloods
broken depot
KBELF has both x86 and RISC-V support and it supports dynamic linking
tender gorge
ill impl syscalls myself just after bloods <:nooo:750466870993223750>
itll be okie 🥺
take care of yourself and your body pls 🫂
surreal path
i will
edgy pilot
ill impl syscalls myself just after bloods <:nooo:750466870993223750>
sounds ominous
edgy pilot
you have 5 more litres
tender gorge
they are gonna take 2 VILES bro
gonna guess they are probably measuring blood medication levels
surreal path
gonna guess they are probably measuring blood medication levels
yeae
we are close to 40 stars btw
tender gorge
nice 
broken depot
we are close to 40 stars btw
We need more marketing so Nyaux can reach new audiences
surreal path
We need more marketing so Nyaux can reach new audiences
yes, market to the whats a C
crowd
market to the whats a debugger crowd
how paging
how make operating system
edgy pilot
yes, market to the whats a C
post it on r/osdev and say it can run Linux, windows and macos programs
they'll believe it
surreal path
post it on r/osdev and say it can run Linux, windows and macos programs
real
broken depot
lmao
supple robin
and how tf am i supposed to have syscalls without userspace and how tf am i supp...
wdym
hexed sluice
gl
flat nymph
and how tf am i supposed to have syscalls without userspace and how tf am i supp...
I still don't have everything sysv abi requires
flat nymph
syscall instruction fuck you <:trl:829316641191886888>
Ideally you want to have vDSO
median goblet
and how tf am i supposed to have syscalls without userspace and how tf am i supp...
you build it up one by one
memory mapped files with CoW support, then elf loader, then linker, then shared object manager, then running the elf
then syscalls
or something like that
edgy pilot
im going to get my bloods drawn now
1 vile is for the tests, other is for the vampire in the back room
flat nymph
It's a lot more fun when it's userspace that's loading the kernel
surreal path
i have everything in place for userspace
idk how to test syscalls now i finished the init and shit
surreal path
i have everything in place for userspace
modifications to my vmm too
surreal path
it triple faults
@thorn bramble
but it got to like
the function
but executing it kills it
broken depot
it triple faults
Every time I see someone else's discord server list I get a heart attack on their behalf
So many notifications
thorn bramble
it triple faults
executing kernel code with cpl=3?
surreal path
executing kernel code with cpl=3?
probs yea
surreal path
just dies
surreal path
idfk
broken depot
just dies
Triple fault?
Have you tried adding -d int to QEMU to see what the interrupts and exceptions are?
surreal path
Triple fault?
Have you tried adding `-d int` to QEMU to see what the interrupts ...
i will
output @broken depot @thorn bramble
sorry i was eating cake
broken depot
0xe -> page fault
broken depot
CPL=3 but the RIP seems to be a kernel address
surreal path
CPL=3 but the RIP seems to be a kernel address
yes
i dont know how to test it any other way tbf
i dont wanna stick an elf loader in yet
broken depot
i dont wanna stick an elf loader in yet
You could make a very simple program and manually copy it into user R-X memory. With BadgerOS I literally started with a program that called the thread_yield syscall in a loop
surreal path
thorn bramble
bit 5 means fault in userspace
so ur accessing kernel code from userspace
either map memory as user for testing or get a proper userspace memory mapping
thorn bramble
stack
or, well, it's writing to [something-8]
and something is 0
do u have a tss?
surreal path
yes
thorn bramble
you should set rsp0 in tss to a proper value
i.e a kernel stack pointer for going from user->kernel mode
surreal path
okay
theres a new issue @thorn bramble but its hard to catch
it page faulted
it is mapped
hexed sluice
what
surreal path
a syscall
syscall instruction and a userspace program written in asm
it just does this lol
hexed sluice
🎉 🎉 🎉 🎉 🎉
desert haven
i'm not infy, but nice
desert haven
sysret doesnt work but
dont forget that to do a 64-bit sysret (sysretq for gas), and the layout for the sysret descriptors in the GDT is a bit different to the syscall ones.
it should be: 32-bit user code, user data, 64-bit user code
kind root
<@353593948523986945> opinion?
Big
surreal path
https://www.felixcloutier.com/x86/syscall
where
supple robin
read operation
supple robin
real
edgy pilot
In Long Mode, userland CS will be loaded from STAR 63:48 + 16 and userland SS from STAR 63:48 + 8 on SYSRET. You may need to modify your GDT accordingly.
flat nymph
Just steal my layout
surreal path
> In Long Mode, userland CS will be loaded from STAR 63:48 + 16 and userland SS ...
oh
fun
yea selector is completely wrong
thats fun :)
orchid dawn
holy shit
nyaux officially does more than Techflash OS
congrats (now I'm jealous)
edgy pilot
holy shit
nyaux officially does more than Techflash OS
congrats (~~now I'm jealo...
turn that jealousy into doom running in userspace
orchid dawn
lol
I wish
I haven't updated TFOS in ages
iirc it's still using Limine 5
lmfao
edgy pilot
iirc it's still using Limine 5
ancient
orchid dawn
Last progress of any kind from 2023... yeah, pretty ancient https://discord.com/channels/440442961147199490/1081343665982672928
surreal path
syscall wants that
so still the same issueeven after swapping the descriptors for sysret
broken depot
Birthday gift from the OSDev gods
surreal path
real
frigid cliff
Happy birthday btw
surreal path
thanks zoe :3
frigid cliff
:3
rigid fable
on my birthday too
Happy bday 🎂
surreal path
yes
kind root
Happy bday
surreal path
thanksss
kind root
Did u get any cool gifts
surreal path
js cause no one gave
kind root
What about your parents
surreal path
they didnt give
surreal path
yes
surreal path
lol
edgy pilot
money is a much better gift
surreal path
didnt get
edgy pilot
what about that card your sibling gave you :D
rigid fable
i got no gifts
Should I fix that 🤔
surreal path
yes
surreal path
what about that card your sibling gave you :D
that was nice
kind root
that was nice
What card?
surreal path
from my baby sister
kind root
Like a gift card?
tender gorge
i got no gifts
does the thing i drew count as a gift 🥺
surreal path
does the thing i drew count as a gift 🥺
yes
plush hearth
Happy Birthday mr nyauxmaster
vivid drum
Happy birthday 🎂🎂
surreal path
thank youu
edgy pilot
guess which dumbass forgot to set cpl 3 bits in a gdt entry and tried to debug an userspace issue for a whole day
oh wrong thread
surreal path
all good
steady flume
happy bday nyauxmaster!
rich trellis
happy day of birth celebration🧐
ionic musk
You were born on this day. We must celebrate
surreal path
syscalls and args work now
okay syscalls next whats next now hmmm
fuck symlinks yes
cinder plinth
its from netbsd
edgy pilot
yes
cinder plinth
idk why you said or openbsd is my point
edgy pilot
idk why you said or openbsd is my point
openbsd has it too
surreal path
so
vfs bugs everywhere
i need a hashmap
the one i have in the kernel is shit
bcs i modified it to use sized frees
and kinda fucked it up ig
i need a different impl
surreal path
node looking normal
test is corrupted
@thorn bramble
it dies even trying to USE test
its that fucked
thorn bramble
well yeah ofc
ops points to code
which is obviously borked
pls find out how it gets the broken value of test
surreal path
kk
printing everything lookup does
@thorn bramble it looks sane
it seems but
im still waiting til it finishes
surreal path
i cant solve it
thorn bramble
:(
surreal path
:(
thorn bramble
we figure out tmrw
surreal path
yea hopefully
edgy pilot
bcs i modified it to use sized frees
from when I looked at your allocator, you don't need sized frees
just don't handle page sized allocations from the same function
surreal path
what
edgy pilot
edgy pilot
@surreal path btw I updated the flanterm fork. you can just copy over the files, no api is changed
surreal path
don't you know how it works
yes
i need to check if its a vmm allocation or a slab allocation tho
how am i supposed to do that
without knowing the size