add IDT and add a movecursorpos funtion

src/kernel/arch/i686/idt.asm

@@ -0,0 +1,24 @@
+;/////////////////////;
+;Nanite OS            ;
+;COPYRIGHT (C) 2024   ;
+;Tyler McGurrin       ;
+;/////////////////////;
+[bits 32]
+
+;void __attribute__((cdecl)) i686_IDT_Load(IDTDescriptor* idtDescriptor);
+global i686_IDT_Load
+i686_IDT_Load:
+    ; make new call frame
+    push ebp             ; save old call frame
+    mov ebp, esp         ; initialize new call frame
+
+    ; load IDT
+    mov eax, [ebp + 8]
+    lgdt [eax]
+
+
+
+    ; restore old call frame
+    mov esp, ebp
+    pop ebp
+    ret

src/kernel/arch/i686/idt.c

@@ -0,0 +1,50 @@
+/*----------------*\
+|Nanite OS         |
+|Copyright (C) 2024|
+|Tyler McGurrin    |
+\*----------------*/
+#include "idt.h"
+#include <stdint.h>
+#include <util/binary.h>
+
+typedef struct {
+    uint16_t BaseLow;
+    uint16_t SegmentSelector;
+    uint8_t Reserved;
+    uint8_t Flags;
+    uint16_t BaseHigh;
+} __attribute__((packed)) IDTEntry;
+
+typedef struct {
+    uint16_t Limit;
+    IDTEntry* Ptr;
+
+} __attribute__((packed)) IDTDescriptor;
+
+
+IDTEntry g_IDT[256];
+
+IDTDescriptor g_IDTDescriptor = {sizeof(g_IDT) -1, g_IDT};
+
+void __attribute__((cdecl)) i686_IDT_Load(IDTDescriptor* idtDescriptor);
+
+void i686_IDT_SetGate(int interupt, void* base, uint16_t segmentDescriptor, uint8_t flags) {
+    g_IDT[interupt].BaseLow = ((uint32_t)base) & 0xFFFF;
+    g_IDT[interupt].SegmentSelector = segmentDescriptor;
+    g_IDT[interupt].Reserved = 0;
+    g_IDT[interupt].Flags = flags;
+    g_IDT[interupt].BaseHigh = ((uint32_t)base >> 16) & 0xFFFF;
+}
+
+void i686_IDT_EnableGate(int interupt) {
+    FLAG_SET(g_IDT[interupt].Flags, IDT_FLAG_PRESENT);
+}
+
+void i686_IDT_DisableGate(int interupt) {
+    FLAG_UNSET(g_IDT[interupt].Flags, IDT_FLAG_PRESENT);
+}
+
+void i686_IDT_Initialize() {
+    i686_IDT_Load(&g_IDTDescriptor);
+}
+

src/kernel/arch/i686/idt.h

@@ -3,3 +3,27 @@
 |Copyright (C) 2024|
 |Tyler McGurrin    |
 \*----------------*/
+#pragma once
+
+#include <stdint.h>
+
+void i686_IDT_Initialize();
+void i686_IDT_DisableGate(int interupt);
+void i686_IDT_EnableGate(int interupt);
+void i686_IDT_SetGate(int interupt, void* base, uint16_t segmentDescriptor, uint8_t flags);
+
+typedef enum {
+    IDT_FLAG_GATE_TASK                  = 0x5,
+    IDT_FLAG_GATE_16BIT_INT             = 0x6,
+    IDT_FLAG_GATE_16BIT_TRAP            = 0x7,
+    IDT_FLAG_GATE_32BIT_INT             = 0xE,
+    IDT_FLAG_GATE_32BIT_TRAP            = 0xF,
+
+    IDT_FLAG_RING0                      = (0 << 5),
+    IDT_FLAG_RING1                      = (1 << 5),
+    IDT_FLAG_RING2                      = (2 << 5),
+    IDT_FLAG_RING3                      = (3 << 5),
+
+    IDT_FLAG_PRESENT                    = 0x80,
+
+} IDT_FLAGS;

src/kernel/hal/hal.c

@@ -1,6 +1,18 @@
+/*----------------*\
+|Nanite OS         |
+|Copyright (C) 2024|
+|Tyler McGurrin    |
+\*----------------*/
 #include "hal.h"
 #include <arch/i686/gdt.h>
+#include <arch/i686/idt.h>
+#include <stdio.h>
 
 void HAL_Initialize() { 
+    printf("> Initializing GDT...");
     i686_GDT_Initialize();
+    printf("Done!\n");
+    printf("> Initializing IDT...");
+    i686_IDT_Initialize();
+    printf("Done!\n");
 }

src/kernel/hal/hal.h

@@ -1,3 +1,8 @@
+/*----------------*\
+|Nanite OS         |
+|Copyright (C) 2024|
+|Tyler McGurrin    |
+\*----------------*/
 #pragma once
 
 void HAL_Initialize();

src/kernel/main.c

@@ -21,9 +21,13 @@ extern uint8_t __end;
     printf("Loaded Kernel!\n");
 
     // init HAL
-    printf("Initializing HAL...");
+    printf("Initializing HAL...\n");
+    int halx, haly = 0;
     HAL_Initialize();
-    printf("Done!\n");
+    movecursorpos(19, 8);
+    printf("Done!\n\n\n");
+
+
 
 end:
     for (;;);

src/kernel/stdio.c

@@ -8,13 +8,25 @@
 #include <stdarg.h>
 #include <stdbool.h>
 
+
+const uint8_t DEFAULT_COLOUR = 0x7;
+
 const unsigned SCREEN_WIDTH = 80;
 const unsigned SCREEN_HEIGHT = 25;
-const uint8_t DEFAULT_COLOUR = 0x7;
 
 uint8_t* g_ScreenBuffer = (uint8_t*)0xB8000;
 int g_ScreenX = 0, g_ScreenY = 0;
 
+void movecursorpos(int x, int y) {
+	g_ScreenX = x;
+	g_ScreenY = y;
+}
+
+void getcursorpos(int x, int y) {
+	x = g_ScreenX;
+	y = g_ScreenY;
+}
+
 void putchr(int x, int y, char c)
 {
 	g_ScreenBuffer[2 * (y * SCREEN_WIDTH + x)] = c;

src/kernel/stdio.h

@@ -6,9 +6,11 @@
 #pragma once
 #include <stdint.h>
 
+
 void clrscr();
 void putc(char c);
 void puts(const char* str);
 void printf(const char* fmt, ...);
 void print_buffer(const char* msg, const void* buffer, uint32_t count);
-void setcursor(int x, int y);
+void movecursorpos(int x, int y);
+void getcursorpos(int x, int y);

src/kernel/util/binary.h

@@ -0,0 +1,9 @@
+/*----------------*\
+|Nanite OS         |
+|Copyright (C) 2024|
+|Tyler McGurrin    |
+\*----------------*/
+#pragma once
+
+#define FLAG_SET(x, flag) x |= (flag)
+#define FLAG_UNSET(x, flag) x &= ~(flag)