1 files changed, 23 insertions, 0 deletions
diff --git a/kernel/arch/x86_64/serial.cpp b/kernel/arch/x86_64/serial.cpp
new file mode 100644
index 0000000..e90bcde
--- /dev/null
+++ b/kernel/arch/x86_64/serial.cpp
@@ -0,0 +1,23 @@
+#include <io.h>
+#include <string.h>
+
+#define PORT 0x3f8
+
+int is_transmit_empty() {
+    return inb(PORT + 5) & 0x20;
+}
+
+extern "C" void serial_putchar(char c) {
+    while (is_transmit_empty() == 0);
+    outb(PORT, c);
+}
+
+void serial_write(const char* data, size_t size) {
+    for (size_t i = 0; i < size; i++) {
+        serial_putchar(data[i]);
+    }
+}
+
+void serial_writestring(const char* data) {
+    serial_write(data, strlen(data));
+}
+\ No newline at end of file