interrupts

1 files changed, 13 insertions, 0 deletions

diff --git a/kernel/io.c b/kernel/io.c
new file mode 100644
index 0000000..6bf67d0
--- /dev/null
+++ b/kernel/io.c
@@ -0,0 +1,13 @@
+#include <stdint.h>
+
+uint8_t inb(uint32_t port)
+{
+	uint8_t ret;
+	__asm__ volatile ("inb %%dx, %%al" : "=a"(ret) : "d"(port));
+	return ret;
+}
+
+void outb(uint32_t port, uint8_t value)
+{
+	__asm__ volatile ("outb %%al, %%dx" : : "d"(port), "a"(value));
+}