1 files changed, 12 insertions, 0 deletions
diff --git a/arch/x86_64/hal/port.h b/arch/x86_64/hal/port.h
new file mode 100644
index 0000000..6dbc27c
--- /dev/null
+++ b/arch/x86_64/hal/port.h
@@ -0,0 +1,12 @@
+#ifndef _JOVE_PORT_H
+#define _JOVE_PORT_H 1
+
+#include <stdint.h>
+
+static inline uint8_t inb(uint16_t port)
+{ uint8_t r; __asm__ volatile("inb %w1, %b0": "=a"(r): "Nd"(port): "memory"); return r; }
+
+static inline void outb(uint16_t port, uint8_t v)
+{ __asm__ volatile("outb %b0, %w1":: "a"(v), "Nd"(port): "memory"); }
+
+#endif