introduce convert-trace tool

The input (taken on stdin) is a gem5.opt --debug-flags=MemoryAccess
trace (--format gem5), or a dump-trace output (--format dump) for easy
trace synthesis (for testing purposes).

gem5 format: Currently imports physical, not virtual memory addresses.
dump format: Currently ignores extended trace information.

Change-Id: Ic26a996d6fb9ce4175c855fadcbcff9ac9263888

tools/convert-trace/FormatConverter.hpp

@@ -0,0 +1,16 @@
+#ifndef __FORMATCONVERTER_HPP__
+#define __FORMATCONVERTER_HPP__
+
+#include <istream>
+#include "util/ProtoStream.hpp"
+
+class FormatConverter {
+public:
+	FormatConverter(std::istream& input, fail::ProtoOStream& ps) : m_input(input), m_ps(ps) {}
+	virtual bool convert() = 0;
+
+protected:
+	std::istream& m_input;
+	fail::ProtoOStream& m_ps;
+};
+#endif