Add memory handling module

2 files changed, 62 insertions, 0 deletions

diff --git a/memory.c b/memory.c
new file mode 100644
index 0000000..75b041f
--- /dev/null
+++ b/memory.c
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2010 Tobias Klauser <tklauser@distanz.ch>
+ *
+ * This file is part of nios2sim-ng.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "nios2sim-ng.h"
+#include "nios2.h"
+#include "memory.h"
+
+uint8_t memory_get_byte(struct memory *mem, int32_t offset)
+{
+	uint8_t *base = (uint8_t *) mem->base;
+	return base[offset];
+}
+
+void memory_dump(struct memory *mem, uint32_t offset, size_t count)
+{
+	size_t i;
+
+	for (i = 0; i < count; i++) {
+		if ((i + 1) % 4 == 1)
+			info("%08x:  ", (unsigned int) (offset + i));
+		info(" %08x", mem->base[offset / 4 + i]);
+		if ((i + 1) % 4 == 0)
+			info("\n");
+	}
+}
diff --git a/memory.h b/memory.h
new file mode 100644
index 0000000..e5bd073
--- /dev/null
+++ b/memory.h
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2010 Tobias Klauser <tklauser@distanz.ch>
+ *
+ * This file is part of nios2sim-ng.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _MEMORY_H_
+#define _MEMORY_H_
+
+struct memory {
+	uint32_t *base;
+	size_t size;
+
+	uint32_t image_base;
+};
+
+#define IMAGE_BASE_UNINITIALIZED	UINT32_MAX
+
+extern uint8_t memory_get_byte(struct memory *mem, int32_t offset);
+
+extern void memory_dump(struct memory *mem, uint32_t offset, size_t count);
+
+#endif /* _MEMORY_H_ */