PoliEcho-holding-org/kern
1
0
Fork 1
mirror of https://github.com/Tom-on64/kern.git synced 2026-11-05 02:53:10 +00:00
Code Issues Packages Projects Releases Wiki Activity

The great 64-bit rewrite

Browse Source 
* We did loose tasking and only have a paging skeleton, but hey it took like 4 months so i'm happy that there's something :p
This commit is contained in:
Tom-on
2026-02-08 13:04:39 +01:00
parent d9471572b8
commit 50a1d6198e
42 changed files with 2206 additions and 1786 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kernel/src/idt.c
+12 -12
View File
@@ -3,24 +3,24 @@
#include <gdt.h>
#include <idt.h>
__align(16) // performace :fire:
__align(16) // performace
static struct idt_entry idt[IDT_ENTRIES];
static struct idt_pointer idtp;
void idt_set_gate(uint8_t i, void* handler, uint8_t flags) {
uint32_t offset = (uint32_t)handler;
struct idt_entry* entry = &idt[i];
entry->offset_low = (uint16_t)offset;
entry->selector = GDT_KERNEL_CODE;
entry->flags = flags;
entry->offset_high = (uint16_t)(offset >> 16);
void idt_set_gate(uint8_t i, void* handler, uint8_t attrib) {
size_t addr = (size_t)handler;
idt[i].offset_low = (uint16_t)addr;
idt[i].selector = GDT_KERNEL_CODE;
idt[i].ist = 0;
idt[i].__reserved = 0;
idt[i].attrib = attrib;
idt[i].offset_mid = (uint16_t)(addr >> 16);
idt[i].offset_high = (uint32_t)(addr >> 32);
}
int idt_init(void) {
memset(&idt, 0, sizeof(idt));
idtp.limit = sizeof(idt);
idtp.base = (uint32_t)&idt;
idtp.size = sizeof(idt) - 1;
idtp.offset = (size_t)&idt;
// Load IDT instruction
__asm__ volatile ("lidt %0" : : "m"(idtp));