1 files changed, 19 insertions, 0 deletions
diff --git a/include/device/uart.h b/include/device/uart.h
new file mode 100644
index 0000000..1724eb5
--- /dev/null
+++ b/include/device/uart.h
@@ -0,0 +1,19 @@
+#ifndef JOVE_KERNEL_ARCH_x86_64_UART_H
+#define JOVE_KERNEL_ARCH_x86_64_UART_H 1
+
+#include "jove.h"
+#include <stdint.h>
+
+ALWAYS_INLINE uint8_t pinb(uint16_t port)
+{
+    uint8_t v;
+    __asm__ volatile("inb %1, %0": "=a"(v): "Nd"(port));
+    return v;
+}
+
+ALWAYS_INLINE void poutb(uint16_t port, uint8_t b)
+{
+    __asm__ volatile("outb %0, %1":: "a"(b), "Nd"(port));
+}
+
+#endif