Major libk restructuring, also rewrote drivers/serial.h

libk/include/cpu/isr.h

@@ -0,0 +1,27 @@
+#ifndef _CPU_ISR_H
+#define _CPU_ISR_H
+
+#include <stdint.h>
+
+typedef struct {
+    // Pushed by OS
+    uint32_t esp, ebx, ecx, edx, esi, edi, ebp;
+    uint32_t ds, es, fs, gs, eax;
+    uint32_t interrupt, error;
+
+    // Pushed by CPU
+    uint32_t eip, cs, eflags, user_esp, user_ss;
+} intFrame_t;
+typedef void (*HandlerPtr)(intFrame_t* iframe);
+
+void setupIsrs();
+void registerIrq(uint8_t id, HandlerPtr handler);
+int handleInterrupt(intFrame_t iframe);
+
+// ISR Table
+extern void* asm_isrRedirectTable[48];
+
+// Int 0x80 - Syscall
+extern void isr128();
+
+#endif