Import the "gerbert" kernel I worked on earlier this year.

It's a lot crappier than I remembered it. It's gonna need a lot of work.

Kernel/IO.cpp

@@ -0,0 +1,41 @@
+#include "IO.h"
+
+namespace IO {
+
+BYTE in8(WORD port)
+{
+    BYTE value;
+    asm("inb %%dx, %%al":"=a"(value):"d"(port));
+    return value;
+}
+
+WORD in16(WORD port)
+{
+    WORD value;
+    asm("inw %%dx, %%ax":"=a"(value):"d"(port));
+    return value;
+}
+
+DWORD in32(DWORD port)
+{
+    DWORD value;
+    asm("inl %%dx, %%eax":"=a"(value):"d"(port));
+    return value;
+}
+
+void out8(WORD port, BYTE value)
+{
+    asm("outb %%al, %%dx"::"d"(port), "a"(value));
+}
+
+void out16(WORD port, WORD value)
+{
+    asm("outw %%ax, %%dx"::"d"(port), "a"(value));
+}
+
+void out32(WORD port, WORD value)
+{
+    asm("outl %%eax, %%dx"::"d"(port), "a"(value));
+}
+
+}