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i need a break

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This commit is contained in:
Nathan Singer
2025-05-30 18:58:45 -04:00
parent f8c38d22b0
commit 013b5a557e
8 changed files with 73 additions and 26 deletions
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16
kernel/arch/idt/idt.c
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@ -2,8 +2,10 @@
#ifdef __TESTING__
#include <kernel/_kernel.h>
#include <stdio.h>
#endif
#include <kernel/x86/idt.h>
#include <kernel/x86/pic.h>
__attribute__((aligned(0x10)))
static idt_entry_t idt[256];
@ -12,8 +14,12 @@ static idtr_t idtr;
static bool vectors[IDT_MAX_DESCRIPTORS];
void exception_handler()
void exception_handler(unsigned int i)
{
#ifdef __TESTING__
kerror("EXCEPTION");
printf("Exeption: %u\n", i);
#endif
__asm__ volatile ("cli; hlt"); // hangs the computer
}
@ -28,7 +34,6 @@ void idt_set_descriptor(uint8_t vector, void *isr, uint8_t flags)
descriptor->reserved = 0;
}
extern void* isr_stub_table[];
void idt_init(void)
{
@ -38,16 +43,19 @@ void idt_init(void)
idtr.base = (uintptr_t)&idt[0];
idtr.limit = (uint16_t) sizeof(idt_entry_t) * IDT_MAX_DESCRIPTORS - 1;
for (uint8_t vector = 0; vector < 32; vector++) {
for (uint8_t vector = 0; vector < IDT_MAX_DESCRIPTORS; vector++) {
idt_set_descriptor(vector, isr_stub_table[vector], 0x8E);
vectors[vector] = true;
}
// The "m" indicates actual data, not a pointer
__asm__ volatile("lidt %0" : : "m"(idtr)); // load the new IDT
PIC_remap(0x20, 0x28);
IRQ_set_mask(0xfd); // unmask IRQ1
__asm__ volatile("sti"); // set the interrupt flag
#ifdef __TESTING__
kinfo("Initialized the IDT");
#endif
}