Major libk restructuring, also rewrote drivers/serial.h

libk/include/cpu/idt.h

@@ -0,0 +1,28 @@
+#ifndef _CPU_IDT_H
+#define _CPU_IDT_H
+
+#include <stdint.h>
+
+#define IDT_ENTRIES 256
+
+#define TRAP_GATE_FLAGS    0x8f // P = 1, DPL = 00, S = 0, Type = 1111 (32-bit Trap gate)
+#define INT_GATE_FLAGS     0x8e // P = 1, DPL = 00, S = 0, Type = 1110 (32-bit Int gate)
+#define USR_INT_GATE_FLAGS 0xee // P = 1, DPL = 11, S = 0, Type = 1110 (32-bit Int gate)
+
+typedef struct {
+    uint16_t offsetLow;
+    uint16_t selector;
+    uint8_t zero;
+    uint8_t typeAttr;
+    uint16_t offsetHigh;
+} __attribute__ ((packed)) idtEntry_t;
+
+typedef struct {
+    uint16_t limit;
+    uint32_t base;
+} __attribute__ ((packed)) idtp_t;
+
+void idtSetGate(uint8_t i, void* handler, uint8_t flags);
+void setupIdt();
+
+#endif

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

libk/include/cpu/system.h

@@ -0,0 +1,19 @@
+#ifndef _CPU_SYSTEM_H
+#define _CPU_SYSTEM_H
+
+#include <stdint.h>
+
+void cpuid(uint32_t* eax, uint32_t* ebx, uint32_t* ecx, uint32_t* edx);
+
+void outb(uint16_t port, uint8_t data);
+void outw(uint16_t port, uint16_t data);
+void outl(uint16_t port, uint32_t data);
+
+uint8_t inb(uint16_t port);
+uint16_t inw(uint16_t port);
+uint32_t inl(uint16_t port);
+
+void ioWait();
+void panic();
+
+#endif