mmio: Add mmio_ptr template.

1 files changed, 29 insertions, 0 deletions

diff --git a/mmio/mmio.h b/mmio/mmio.h
new file mode 100644
index 0000000..a756c8f
--- /dev/null
+++ b/mmio/mmio.h
@@ -0,0 +1,29 @@
+#pragma once
+
+#include <cstdint>
+
+template <typename T>
+class mmio_ptr {
+    private:
+        const uintptr_t p;
+
+    protected:
+        T* ptr() const {
+            return reinterpret_cast<T*>(p);
+        }
+
+    public:
+        constexpr mmio_ptr(uintptr_t p) : p(p) {}
+
+        T* operator->() const {
+            return ptr();
+        }
+
+        T& operator*() const {
+            return *ptr();
+        }
+
+        T& operator[](std::size_t idx) const {
+            return ptr()[idx];
+        }
+};