first commit

kernel/src/sys/arch/x86_64/io.c

@@ -0,0 +1,17 @@
+// Copyright (C) 2024 Sipaa Projects
+// This code is part of the Soaplin kernel and is licensed under the terms of
+// the MIT License.
+
+#include <stdint.h>
+
+uint8_t inb(uint16_t port) {
+  uint8_t ret;
+  __asm__ volatile("inb %w1, %b0" : "=a"(ret) : "Nd"(port) : "memory");
+  return ret;
+}
+
+void outb(uint16_t port, uint8_t val) {
+  __asm__ volatile("outb %b0, %w1" : : "a"(val), "Nd"(port) : "memory");
+}
+
+void io_wait(void) { outb(0x80, 0); }