First commit: add folder structure, make process, kernel main function, base for framebuffer driver

stdio.c

@@ -0,0 +1,23 @@
+#include "io.h"
+#include "stdio.h"
+
+char* fb = (char *) 0x000B8000;
+
+void move_cursor(unsigned short pos)
+{
+  outb(FB_CMD_PORT, FB_HIGH_BYTE_CMD);
+  outb(FB_DATA_PORT, ((pos >> 8) & 0x00FF));
+  outb(FB_CMD_PORT, FB_LOW_BYTE_CMD);
+  outb(FB_DATA_PORT, pos & 0x00FF);
+}
+
+void putchar(unsigned int i, char c, unsigned char fg, unsigned char bg)
+{
+  fb[i] = c;
+  fb [i+1] = ((fg & 0x0F) << 4 | (bg & 0x0F));
+}
+
+int write(char *buf, unsigned int len)
+{
+  return 42;
+}