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RaphProductions 2025-05-06 20:19:48 +02:00
commit cab7a75780
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kernel/src/sys/arch/x86_64/idt.c Executable file
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//#include "sys/log.h"
#include "sys/arch/x86_64/pic.h"
#include <sys/arch/x86_64/idt.h>
#include <sys/log.h>
__attribute__((aligned(0x10)))
static idt_entry_t idt[256];
static idtr_t idtr;
void idt_set_descriptor(uint8_t vector, void* isr, uint8_t flags) {
idt_entry_t* descriptor = &idt[vector];
descriptor->isr_low = (uint64_t)isr & 0xFFFF;
descriptor->kernel_cs = 0x28;
descriptor->ist = 0;
descriptor->attributes = flags;
descriptor->isr_mid = ((uint64_t)isr >> 16) & 0xFFFF;
descriptor->isr_high = ((uint64_t)isr >> 32) & 0xFFFFFFFF;
descriptor->reserved = 0;
}
static int vectors[256];
extern void* isr_stub_table[];
void idt_init() {
idtr.base = (uintptr_t)&idt[0];
idtr.limit = (uint16_t)sizeof(idt_entry_t) * 256 - 1;
for (uint16_t vector = 0; vector <= 256; vector++) {
idt_set_descriptor(vector, isr_stub_table[vector], 0x8E);
vectors[vector] = 1;
}
pic_init();
pic_unmask_irq(1);
__asm__ volatile ("lidt %0" : : "m"(idtr)); // load the new IDT
__asm__ volatile ("sti"); // set the interrupt flag
//logln(progress, "kinit stage 1", "IDT initialized! Time to receive interrupts!\n");
log("idt - initialized\n");
}