first steps towards a QEMU target backend

- This commit only enables linking against QEMU.  The abstraction layer is
  completely dysfunctional at this time.
- QEMU's build system needs to be patched in order to create a static
  library.  This patch is currently not included in the Fail* repository.
- QEMU's JIT compilation may complicate or even preclude the implementation
  of some of Fail*'s backend abstractions.  Only a minimal subset (serial
  I/O, memory, memory writes, save/restore) is planned for the first phase.

git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1615 8c4709b5-6ec9-48aa-a5cd-a96041d1645a

src/core/sal/qemu/QEMUController.hpp

@@ -0,0 +1,59 @@
+#ifndef __QEMU_CONTROLLER_HPP__
+  #define __QEMU_CONTROLLER_HPP__
+
+#include <string>
+#include <cassert>
+#include <iostream>
+#include <iomanip>
+#include <string.h>
+
+#include "../SimulatorController.hpp"
+#include "../Listener.hpp"
+
+namespace fail {
+
+class ExperimentFlow;
+
+/**
+ * \class QEMUController
+ * Very rudimentary, QEMU-specific implementation of a SimulatorController.
+ */
+class QEMUController : public SimulatorController {
+private:
+public:
+	// Initialize the controller.
+	QEMUController();
+	~QEMUController();
+	/**
+	 * I/O port communication handler. This method is called from QEMU.  TODO.
+	 * @param data the data transmitted
+	 * @param port the port it was transmitted on
+	 * @param out true if the I/O traffic has been outbound, false otherwise
+	 */
+	void onIOPort(unsigned char data, unsigned port, bool out) {}
+	/**
+	 * Static internal handler for TimerListeners.  TODO.
+	 */
+	static void onTimerTrigger(void *thisPtr) {}
+	/* ********************************************************************
+	 * Simulator Controller & Access API:
+	 * ********************************************************************/
+	/**
+	 * Save simulator state.  TODO.
+	 * @param path Location to store state information
+	 */
+	void save(const std::string& path) {}
+	/**
+	 * Restore simulator state. Clears all Listeners.  TODO.
+	 * @param path Location to previously saved state information
+	 */
+	void restore(const std::string& path) {}
+	/**
+	 * Reboot simulator. Clears all Listeners.  TODO.
+	 */
+	void reboot() {}
+};
+
+} // end-of-namespace: fail
+
+#endif // __QEMU_CONTROLLER_HPP__