From d43d7caf15a01dd9c2ef1d9e975df3ef7c4e9204 Mon Sep 17 00:00:00 2001
From: Clyne Sullivan <clyne@bitgloo.com>
Date: Fri, 27 Sep 2024 06:02:49 -0400
Subject: wip: initial commit

---
 portio.hpp | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 portio.hpp

(limited to 'portio.hpp')

diff --git a/portio.hpp b/portio.hpp
new file mode 100644
index 0000000..0a10651
--- /dev/null
+++ b/portio.hpp
@@ -0,0 +1,24 @@
+#ifndef PORTIO_HPP
+#define PORTIO_HPP
+
+#include <cstdint>
+
+inline void outb(std::uint16_t port, std::uint8_t val)
+{
+    asm volatile("outb %b0, %w1" :: "a"(val), "Nd"(port) : "memory");
+}
+
+inline std::uint8_t inb(std::uint16_t port)
+{
+    std::uint8_t val;
+    asm volatile("inb %w1, %b0" : "=a"(val) : "Nd"(port) : "memory");
+    return val;
+}
+ 
+inline void io_wait()
+{
+    outb(0x80, 0);
+}
+
+#endif // PORTIO_HPP
+
-- 
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