move the x86 port io code to a separate file

1 files changed, 12 insertions, 0 deletions

diff --git a/src/kernel/arch/i386/port_io.h b/src/kernel/arch/i386/port_io.h
new file mode 100644
index 0000000..db755b4
--- /dev/null
+++ b/src/kernel/arch/i386/port_io.h
@@ -0,0 +1,12 @@
+#include <stdint.h>
+
+inline void port_outb(uint16_t port, uint8_t val) {
+	asm volatile("outb %0, %1" : : "a" (val), "Nd" (port));
+}
+
+inline uint8_t port_inb(uint16_t port) {
+	uint8_t val;
+	asm volatile("inb %1, %0" : "=a" (val) : "Nd" (port));
+	return val;
+}
+