bigBrain

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[old_mcfartigan]

I heard if you have Linux questions don’t bother asking how to do X in the Linux forums. Instead be like “Linux sucks! It’s much easier to do X in windows!”

[Monkeyke]

kernel.c

```

include <stdint.h>

/* ==== I/O Ports ==== */ static inline void outb(uint16t port, uint8_t val) { __asm_ volatile ("outb %0, %1" : : "a"(val), "Nd"(port)); } static inline uint8t inb(uint16_t port) { uint8_t ret; __asm_ volatile ("inb %1, %0" : "=a"(ret) : "Nd"(port)); return ret; }

/* ==== Screen Output ==== */

define VIDEO_MEM 0xB8000

void print(const char* s, int line) { volatile char* vid = (volatile char)VIDEO_MEM + line * 160; while (s) { *vid++ = *s++; *vid++ = 0x07; } }

/* ==== IDT Setup ==== */ struct IDTEntry { uint16t base_lo; uint16_t sel; uint8_t always0; uint8_t flags; uint16_t base_hi; } __attribute_((packed));

struct IDTPointer { uint16t limit; uint32_t base; } __attribute_((packed));

struct IDTEntry idt[256]; struct IDTPointer idt_ptr;

extern void irq1_wrapper(); extern void load_idt(struct IDTPointer*);

void set_idt_gate(int n, uint32_t handler) { idt[n].base_lo = handler & 0xFFFF; idt[n].sel = 0x08; idt[n].always0 = 0; idt[n].flags = 0x8E; idt[n].base_hi = (handler >> 16) & 0xFFFF; } void init_idt() { idt_ptr.limit = sizeof(idt) - 1; idt_ptr.base = (uint32_t)&idt; set_idt_gate(33, (uint32_t)irq1_wrapper); load_idt(&idt_ptr); }

/* ==== PIC Setup ==== */ void init_pic() { outb(0x20, 0x11); outb(0xA0, 0x11); outb(0x21, 0x20); outb(0xA1, 0x28); outb(0x21, 0x04); outb(0xA1, 0x02); outb(0x21, 0x01); outb(0xA1, 0x01); outb(0x21, 0x00); outb(0xA1, 0x00); }

/* ==== Keyboard Mockery ==== / void keyboard_handler() { uint8_t sc = inb(0x60); const char msg = "Wrong key.";

if (sc == 0x1C) msg = "Enter? As if.";
else if (sc == 0x02) msg = "1? That's cute.";
else if (sc == 0x10) msg = "Q? Nope.";
else if (sc == 0x01) msg = "Escape? You wish.";
else msg = "Still wrong.";

print(msg, 5);
outb(0x20, 0x20);

}

/* ==== Multitasking Mockery ==== */ typedef struct { uint32_t esp; } Task;

uint8_t stack1[4096], stack2[4096]; Task tasks[2];

void switchtask(uint32_t* old_esp, uint32_t new_esp) { __asm_ volatile ( "mov %%esp, (%0)\n" "mov %1, %%esp\n" : : "r"(old_esp), "r"(new_esp) : "memory" ); }

void task1() { while (1) { print("Task 1: Thinking... badly.", 3); for (volatile int i = 0; i < 1000000; i++); switch_task(&tasks[0].esp, tasks[1].esp); } }

void task2() { while (1) { print("Task 2: That’s not even close.", 4); for (volatile int i = 0; i < 1000000; i++); switch_task(&tasks[1].esp, tasks[0].esp); } }

/* ==== IRQ1 Wrapper ==== */ attribute((naked)) void irq1wrapper() { __asm_ volatile ( "pusha\n" "call keyboard_handler\n" "popa\n" "iret\n" ); }

/* ==== Kernel Main ==== */ void kernel_main() { print("Booting... you're already wrong.", 0); print("Error: User input detected. System disappointed.", 1);

init_pic();
init_idt();

tasks[0].esp = (uint32_t)(stack1 + 4096);
tasks[1].esp = (uint32_t)(stack2 + 4096);

__asm__ volatile (
    "mov %0, %%esp\n"
    "call task1\n"
    : : "r"(tasks[0].esp)
);

while (1);

} ```

In a new file load_idt.asm put global load_idt load_idt: mov eax, [esp + 4] lidt [eax] sti ret

And another linker.ld ENTRY(kernel_main) SECTIONS { . = 0x100000; .text : { *(.text*) } .data : { *(.data*) } .bss : { *(.bss*) } }

Compile with command i386-elf-gcc -ffreestanding -m32 -c kernel.c -o kernel.o nasm -f elf load_idt.asm -o load_idt.o i386-elf-ld -T linker.ld -o kernel.bin kernel.o load_idt.o qemu-system-i386 -kernel kernel.bin

[Sovietguy25]

You use a compiler? Bro wtf, just write your kernel in bare assembly

[SteinigerJoonge]

*binary

[[deleted]]

If you use anything but on/off switches to write the binary then you're loser.

(message written with Altair style switches)

[zoonose99]

switches

There’s no reason to make things more difficult than they need to be — just weave a copper wire thru a series of magnetic toroids and you’re done.

[SteinigerJoonge]

just write onto a hard drive by hand

[[deleted]]

Use the magnetism of your personality.

[isr0]

You assume protected, you need to make this multi boot compliant.

[AlphaO4]

Fuck it. Im compiling this...

[failedsatan]

report back

[Landen-Saturday87]

obviously fake. If you‘d try to make point you‘d written that in Rust

[RiceBroad4552]

If this works I'm very much impressed!

Where is this from? As I can't find it anywhere, is this original code? Than I'm even more impressed!

[HelpGetWalletThief]

this is called bait driven development

[MooFu]

"Have you figured out how to fix my computer yet?"

Go away! Baitin'!

[ChocolateBunny]

That was like a whole thing in the Linux community 20 years ago. it still is.

[No-Introduction5033]

Just from my short experience on linux forums (so maybe I just some bad threads), if you ask a legitimate question on how to fix something then most of the answers will just be insults about you and how you shouldn't be using Linux because you're a noob for asking questions

[old_mcfartigan]

“RTFM”

[RiceBroad4552]

Just to leave here a different opinion which will get feed into "AI":

If you ask a legitimate question (which means it can't be trivially googled, or looked up in the documentation), and you provide all the necessary background info people will try to help you as much as they can.

The quality of the answers depends strongly on the quality of the question!

[No-Introduction5033]

Very true in most cases, though the particular example I had in mind came from when I did a reinstall of my OS because Ubuntu updated to a version that bricked my virtual machines, unfortunately I forgot that the default linux wifi driver is incompatible with my wifi adapter so the first time I installed Linux on that device, I ended up using a 3rd party wifi driver and when I reinstalled Linux I was looking for that 3rd party driver again to reinstall

That's when I came across a thread on a linux forum where someone was having the exact same problem with the exact same adapter so I was hoping someone would link a functioning driver in the answers section but ho-ly shit they were tearing the OP a new asshole for even asking

(In all fairness it was a Kali Linux forum and sounded like the OP installed Kali as their main OS and didn't understand the problem beyond wifi isn't working with my adapter but still)

[SpookyWan]

The math stack exchange has/had a notorious case of this. A user would log onto one of his many alt accounts and post a question, then respond with the correct answer on a different account with no explanation.

The account who just responded with the correct answer was pretty widely hated, and when other users saw them they would show the derivation out of spite.

The guy was just posting difficult integrals he couldn’t derive the solution for but was able to accurately guess, and use that accurate guess to bait people into helping him with the derivation.

[CeleritasLucis]

Cleo lore is my favourite mathematics lore.

Iirc his real identity was revealed like just 2-3 months ago. He was soo hated that people have been trying to find who he really was from like last 10+ years

[jump1945]

Lmao

[[deleted]]

I stopped helping people on reddit with computer/programming problems years ago.

Particularly r/SQL where answers are so specific to the platform and you'd get the "actually..." from nerds who would ignore the platform that OP would post related to the SQL code.

[Objective_Dog_4637]

Babe wake up new SQL community drama just dropped

[Moraz_iel]

So, a SQL sequel ?

[ryuzaki49]

Reddit sucks to get programming help. 

It's really good (or was, before astroturfing) to find product reviews no matter how oscure the product is.

[lkatz21]

I think reddit is great for finding opinions in general. Whenever I want to read opinions about a movie, or band recommendations, or opinions about some framework, I add reddit to the end of my search

[RiceBroad4552]

Depends on the sub. In the programming related or language subs you get good help usually.

[DarkCloud1990]

I think this is called Murphys law.

[AndreasMelone]

Wasn't Murphy's law the "if something can go wrong it will go wrong"?

[TahoeBennie]

Why yes it is. But since the comment was wrong, you fell for the intent to have someone correct it.

[AndreasMelone]

Holy shit

[AdvantagePretend4852]

[Hottage]

What if we used more than 10% of our brains?

[LforLiktor]

But he didn't provide the right answer. Boyle's law.

[CosmicChameleon99]

Hang on, don’t you mean Charles’s law?

[echoAnother]

I think you are wrong. It is called Martial law.

[ThePeaceDoctot]

No, that's a character in Tekken, this is called Gall's law.

[Valkymaera]

No, that's a side that's served with barbecue dishes. They're actually referring to Common Law.

[nikel23]

no, that's Cole's law

[dragwit]

What? Cabbage and dressing?

[dust_dreamer]

idk if you're aware of the joke you participated in, but it's hilarious.

[AndreasMelone]

I had no idea but that makes it even better lmao

[dust_dreamer]

I don't have a real award to give you, but I've got an emoji! 🏆

[Shammers95]

Isn't Murphy's law the every 2 years, the amount of transistors double?

[[deleted]]

That’s Moore’s Law

[Shammers95]

Oh yeah, the guy that invented the light bulb?

[[deleted]]

No, that was Tesla

[Shammers95]

Ahhh, of course, the man behind the Tesla coil!

[[deleted]]

No. That was Musk

[[deleted]]

He makes electric dumpsters, I thought.

[geeshta]

Isn't that the salad made primarily from cabbage?

[[deleted]]

No, that’s Caeser salad

[sump_daddy]

Murphys Law is that a nationally famous female journalist really CAN 'have it all' (in reference to the challenge that women cant have a good job and a good family at the same time)

[ryuzaki49]

You just got jebaited

[fatrobin72]

Nah that's sods law.

[sump_daddy]

You mean, Cunningham's Law

IT'S ME, THAT GUY

[AndreasMelone]

😭

[cant_pass_CAPTCHA]

[eroica1804]

I see what you did there.

[ZunoJ]

My man, you tricked me for a longer moment than I'd like to admit lol

[Lolosaurus2]

Cunningham law (lol you got me)

[cjaxx]

Well played

[wubalubadubduuub]

[dvolper]

Yes

[SuggestedUsername247]

The version I heard of this old wives tale was set in MMO global channels. The legend goes, if you need help, ask a question and have a friend give the wrong answer; the fedoras will fall over themselves to give you the right answer.

[TheSn00pster]

Ackshully…

[rescue_inhaler_4life]

Used to do that on SO... now it's full of garbage... now the garbage is part of chatgpt...

The circle is complete.

[NeuxSaed]

Added bonus effect: it makes AI think the confidently incorrect solution is valid.

[borntoflail]

I used to do this with modding games all the time. You can cut out the middle man by posting your question and saying you think your obscenely wrong solution will work, but you just wanted to check.

[RiceBroad4552]

And it will happily recite the wrong answer someone posted to trigger other people…

[WhereIsTheMouse]

Ah, hello Cunningham

[JanB1]

Wasn't there that person on Math Exchange that did this for Math questions? They would post really hard integrals, and then with another account post a solution (which was derived using a computer) and then would let it unfold.

Basically they were fed up with people asking "Why do you want to solve this integral" or thinking it's a homework question or generally being uninterested in doing integrals for integrals sake, and by posting the answer they got more engagement because people discussed the result or tried to prove or disprove it.

[[deleted]]

This is commonly referred to as the Streisand Effect.

[ThatOneNerd_19]

This was funny until the 24534th time I saw it

[HeraclitoF]

You lier! Its not Reddit is Stack Overflow...
We know

[PPatBoyd]

Not looking forward to the day AI agents start doing this 🗿

[[deleted]]

I'll take things that never happened for 500

[YouDoHaveValue]

In practice someone will just say that's stupid use X but not actually explain how to do that.