feat: refactor to use gcc types

kernel/cpu/idt.h

@@ -9,26 +9,26 @@
 
 /* How every interrupt gate (handler) is defined */
 typedef struct {
-    u16 low_offset; /* Lower 16 bits of handler function address */
-    u16 sel; /* Kernel segment selector */
-    u8 always0;
+    uint16_t low_offset; /* Lower 16 bits of handler function address */
+    uint16_t sel; /* Kernel segment selector */
+    uint8_t always0;
     /* First byte
      * Bit 7: "Interrupt is present"
      * Bits 6-5: Privilege level of caller (0=kernel..3=user)
      * Bit 4: Set to 0 for interrupt gates
      * Bits 3-0: bits 1110 = decimal 14 = "32 bit interrupt gate" */
-    u8 flags;
-    u16 high_offset; /* Higher 16 bits of handler function address */
+    uint8_t flags;
+    uint16_t high_offset; /* Higher 16 bits of handler function address */
 } __attribute__((packed)) idt_gate_t;
 
 typedef struct {
-    u16 limit;
-    u32 base;
+    uint16_t limit;
+    uint32_t base;
 } __attribute__((packed)) idt_register_t;
 
 #define IDT_REGISTERS 256
 
-void set_idt_gate(int n, u32 handler);
+void set_idt_gate(int n, uint32_t handler);
 
 void set_idt();