soaplin/kernel/src/arch/x86_64/pit.c
RaphProductions b2ec036055 kernel - various changes
+ vmm: higher half should not be identify-mapped
+ panic: now displays current process
+ kernel: fix physical addresses (ḑ̷̩̜̦̥̰͔̻͔̖͎̳̗̫̓̓͊́̒͜ơ̸͙͎̠͎̩̤̭̬̙͚̬̣͇̤̼̑̐̿̿͆͠͝ ̷̗̟̘͎̥̤̭̂͛͆́͂͝͠ͅN̴̨̛̥̩̺͚̺̠͙̼̙̯̱͚̫̊̐̅̀̌̏͆̋̕͜͝͠ͅö̵̪͚̞̞̜͎͉̦́́̍̀̃̋̇̄̓͊̎͝t̶̡͍̩̤̹̤̂̑̓͌͂̾̑̈́͒̾̾́͐͆͊͂ ̴̨̫̺̦̊̍̒͛͌̌͂͘̚̚͘͘͝I̶̥͚̯̖̙̩͂́͜d̸̢̡̗͉̠̹̒͠e̸̡̪̺͎͖͚̗̟̟̥͍͑̈̋̉̋̓̐̊̚͘͜n̸̡̍͐͗̈͌̀̓̃́́͠t̶̢͈͈̦̻̰͎̪̰̒̄͒̃̐͜ĩ̴͕̼̻͓͚͕̲̬̤͈̜̣̐̍́̾̀̏̏̑͒̚ͅf̷̡̨̼̻̠̠͔̪͍͛y̴͉͓̓͒̆̎̚ ̶̟͙͖̙̟͍̟͕̞̥̹͇̌̉́̑͗͋̀̕ͅͅM̷͙̬̲̓a̶̫̰̞̺̖̍̀p̶̡̨̡̗̖̹̩̫̯̞̬͋͂̏̍̾̽͜ͅ ̶̧̨̧̫͉̝̮̳͎͍̱̟̪̝̀̽͑̂̿̄̈̇̓͘Ḫ̶̨̨̗̣̪͓̺͙͈͙̀ḭ̶̧̡͇̹͙̩͍͎̮̤̦̜̻͎̞̔̐̇̉̓͒͛̅̿͊̍͆͘̕g̷͖͙͍͓̯̪̩̑̑͋̈́͌͐̊̀͝͠͝ĥ̴̢̡̫̪̟̞̭̟͕̖͎͊͑͛̆͝e̴̡̨̗̱̱͙͔̻̤͎͆̒̾̾̓̈͊̓ͅr̵̛͈̩͍̔̌̃̇͊̽̀̉̽̊͌̿́ ̷̨̡̛̩̹̹̇̇̈́̑̍̊͒̄́͛H̷̨̪̜̤͍̻͎̲̜͋́̆͋̂̚͘͘͜͠ą̷̠͓̫̲́́̽̉̒͌́̓ͅl̴̢̛͈̤̺̱̙̬̆̎̄̊̈́̐̾̏̿̕f̸̢̰͓̦̺̰̯͚̣̙͔̺̂͜͜)
2025-05-16 08:01:37 +02:00

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C

#include "arch/x86_64/idt.h"
#include "sched/sched.h"
#include <arch/x86_64/idt.h>
#include <arch/x86_64/pit.h>
#include <stdint.h>
#include <sys/log.h>
uint32_t tick = 0;
void pit_handler(registers_t *regs) {
// log("PIT");
tick++;
schedule(regs);
}
void pit_init() {
outb(0x43, 0x36);
uint16_t div = (uint16_t)(1193180 / 1000);
outb(0x40, (uint8_t)div);
outb(0x40, (uint8_t)(div >> 8));
}
void pit_enable() { idt_register_irq(0, pit_handler); }
void pit_sleep(uint32_t ms) {
uint64_t start = tick;
while (tick - start < ms) {
__asm__ volatile("nop");
}
}