1 files changed, 18 insertions, 1 deletions
diff --git a/src/loader/cpu.c b/src/loader/cpu.c
index a12d2fa..a0694ed 100644
--- a/src/loader/cpu.c
+++ b/src/loader/cpu.c
@@ -3,7 +3,7 @@
 #include <cpu.h>
 
 /**
- * CPU IO
+ * CPU serial I/O
  */
 
 u8 inb(u16 port)
@@ -20,7 +20,24 @@ u16 inw(u16 port)
 	return value;
 }
 
+u32 inl(u16 port)
+{
+	u32 value;
+	__asm__ volatile("inl %1, %0" : "=a"(value) : "Nd"(port));
+	return value;
+}
+
 void outb(u16 port, u8 data)
 {
 	__asm__ volatile("outb %0, %1" ::"a"(data), "Nd"(port));
 }
+
+void outw(u16 port, u16 data)
+{
+	__asm__ volatile("outw %0, %1" ::"a"(data), "Nd"(port));
+}
+
+void outl(u16 port, u32 data)
+{
+	__asm__ volatile("outl %0, %1" ::"a"(data), "Nd"(port));
+}