Major libk restructuring, also rewrote drivers/serial.h

libk/cpu/idt.c

@@ -0,0 +1,25 @@
+#include <cpu/idt.h>
+#include <stdint.h>
+
+__attribute__ ((aligned(0x10))) // For performance
+idtEntry_t idt[IDT_ENTRIES] = { 0 };
+idtp_t idtp;
+
+void idtSetGate(uint8_t i, void* handler, uint8_t flags) {
+    uint32_t offset = (uint32_t)handler;
+    idtEntry_t* entry = &idt[i];
+
+    entry->offsetLow = (uint16_t)offset;
+    entry->selector = 0x08;
+    entry->zero = 0;
+    entry->typeAttr = flags;
+    entry->offsetHigh = (uint16_t)(offset >> 16);
+}
+
+void setupIdt() {
+    idtp.limit = sizeof(idtEntry_t) * 256;
+    idtp.base = (uint32_t)&idt;
+
+    __asm__ volatile ("lidt %0" : : "m"(idtp));
+}
+