Linker script now makes use of kernel32_strap.asm in order to ensure that we enter the correct position in kernel32.bin, updated kernel32.ld, Makefile, etc accordingly. Added types.h for convenience.

Makefile

@@ -1,5 +1,4 @@
-
+CFLAGS = -m32 -nostdlib -fno-builtin -fno-exceptions -fno-leading-underscore -fno-pie -fno-stack-protector
-CFLAGS = -m32 -nostdlib -fno-builtin -fno-exceptions -fno-leading-underscore -fno-pie
 LDFLAGS = 
 
 disk.img: boot.sector kernel.bin hello.bin print.bin hello.txt boot32.bin kernel32.bin
@@ -26,8 +25,11 @@ print.bin: print.asm
 boot32.bin: boot32.asm
 	nasm $< -o $@
 
-kernel32.bin: kernel32.ld kernel32.o
+kernel32.bin: kernel32.ld kernel32_strap.o kernel32.o
-	ld $(LDFLAGS) -T $< -o $@ kernel32.o
+	ld $(LDFLAGS) -T $<
 
 kernel32.o: kernel32.c
-	gcc $(CFLAGS) -o $@ -c $<
+	gcc $(CFLAGS) -o $@ -c $<
+
+kernel32_strap.o: kernel32_strap.asm
+	nasm -felf32 $< -o $@

kernel32.c

@@ -1,28 +1,36 @@
-void clear_screen();
+#include "types.h"
-void set_curpos(int x, int y);
-void print(const char* string);
 
-unsigned char* VMEM_ADDR = (unsigned char*)0xb8000;
+uint8_t* VMEM_ADDR = (uint8_t*)0xb8000;
 const int TERM_WIDTH = 80;
 const int TERM_HEIGHT = 25;
 
 int cursor_x = 0;
 int cursor_y = 0;
 
-int main() {
+void outb(uint16_t portnumber, uint8_t data) {
-  asm(
+  asm volatile("outb %0, %1" : : "a" (data), "Nd" (portnumber));
-    "mov $0x10, %ax\n"
+}
-    "mov %ax, %ds\n"
+uint8_t inb(uint16_t portnumber) {
-    "mov %ax, %ss\n"
+  uint8_t result;
-    "mov $0x90000, %esp"
+  asm volatile("inb %1, %0" : "=a" (result) : "Nd" (portnumber));
-  );
+  return result;
+}
 
-  clear_screen();
+uint16_t get_cursor_position() {
-  set_curpos(0, 0);
+  uint16_t cursor_position = 0;
+  uint8_t* cursor_position_split = (uint8_t*)&cursor_position;
+  outb(0x3D4, 0x0F);
+  cursor_position_split[0] = inb(0x3D5);
+  outb(0x3D4, 0x0E);
+  cursor_position_split[1] = inb(0x3D5);
+  return cursor_position;
+}
 
-  print("Hello, World!\n\nWe are running XnoeOS Code in C now, Protected Mode has been achieved and everything is working super nicely!\n\nHow wonderful!\n\nNow I just need to hope my print function works properly too~~");
+void init_term() {
+  uint16_t cursor_position = get_cursor_position();
 
-  while (1) {}
+  cursor_y = cursor_position / TERM_WIDTH;
+  cursor_x = cursor_position % TERM_WIDTH;
 }
 
 void clear_screen()  {
@@ -55,4 +63,15 @@ void print(const char* string) {
       cursor_y++;
     }
   }
+}
+
+
+int main() {
+  init_term();
+
+  print("KERNEL32 OK!\n\n");
+
+  print("Hello, World!\n\nWe are running XnoeOS Code in C now, Protected Mode has been achieved and everything is working super nicely!\n\nHow wonderful!\n\nNow I just need to hope my print function works properly too~~");
+
+  while (1) {}
 }

kernel32.ld

@@ -1,9 +1,14 @@
-ENTRY(main)
 OUTPUT_FORMAT(binary)
 OUTPUT_ARCH(i386:i386)
 
+INPUT(kernel32_strap.o kernel32.o)
+OUTPUT(kernel32.bin)
+
 SECTIONS {
   . = 0x80000;
 
-  .text : { *(.text*) }
+  .text : { 
+    kernel32_strap.o(.text)
+    kernel32.o(.text)
+  }
 }

kernel32_strap.asm

@@ -0,0 +1,11 @@
+[BITS 32]
+
+_start:
+  mov ax, 10h
+  mov ds, ax
+  mov ss, ax
+  mov esp, 90000h
+
+  call main
+
+extern main

types.h

@@ -0,0 +1,11 @@
+#ifndef TYPES_H
+#define TYPES_H
+
+typedef char int8_t;
+typedef unsigned char uint8_t;
+typedef short int16_t;
+typedef unsigned short uint16_t;
+typedef long long int int32_t;
+typedef unsigned long long int uint32_t;
+
+#endif