1 files changed, 59 insertions, 0 deletions
diff --git a/inc/storage.h b/inc/storage.h
new file mode 100644
index 0000000..1e512e2
--- /dev/null
+++ b/inc/storage.h
@@ -0,0 +1,59 @@
+#ifndef STORAGE_H
+#define STORAGE_H
+#include "response.h"
+#include <array>
+#include <vector>
+
+enum Accessor {
+	MEMORY,
+	FETCH,
+	L1CACHE,
+};
+
+class Storage
+{
+  public:
+	/**
+	 * Write `data` into `address`.
+	 * @param the source making the request.
+	 * @param the data (hexadecimal) to write.
+	 * @param the address to write to.
+	 * @return a status code reflecting the state of the storage level.
+	 */
+	virtual Response *
+	write(Accessor accessor, signed int data, int address) = 0;
+	/**
+	 * Get the data at `address`.
+	 * @param the source making the request.
+	 * @param the address being accessed.
+	 * @return a status code reflecting the state of the storage level, and the
+	 * data being returned.
+	 */
+	virtual Response *read(Accessor accessor, int address) = 0;
+	/**
+	 * Sidedoor view of `lines` of memory starting at `base`.
+	 * @param The base line to start getting memory from.
+	 * @param The amount of lines to fetch.
+	 * @return A matrix of data values, where each row is a line and each column
+	 * is a word.
+	 */
+	virtual int **view(int base, int lines) = 0;
+
+  protected:
+	/**
+	 * The data currently stored in this level of storage.
+	 */
+	std::vector<std::array<unsigned int, 4>> *data;
+	/**
+	 * A pointer to the next lowest level of storage.
+	 * Used in case of cache misses.
+	 */
+	Storage *lower;
+	/**
+	 * The number of clock cycles this level of storage takes to complete
+	 * requests.
+	 */
+	int delay;
+};
+
+#endif /* STORAGE_H_INCLUDED */