Initial Alloy implementation.

This is a regression in functionality and performance, but a much better
foundation for the future of the project (I think). It can run basic
apps under an SSA interpreter but doesn't support some of the features
required to do real 360 apps yet.

src/alloy/mutex.h

@@ -0,0 +1,32 @@
+/**
+ ******************************************************************************
+ * Xenia : Xbox 360 Emulator Research Project                                 *
+ ******************************************************************************
+ * Copyright 2013 Ben Vanik. All rights reserved.                             *
+ * Released under the BSD license - see LICENSE in the root for more details. *
+ ******************************************************************************
+ */
+
+#ifndef ALLOY_MUTEX_H_
+#define ALLOY_MUTEX_H_
+
+#include <alloy/core.h>
+
+
+namespace alloy {
+
+
+typedef struct Mutex_t Mutex;
+
+Mutex* AllocMutex(uint32_t spin_count = 10000);
+void FreeMutex(Mutex* mutex);
+
+int LockMutex(Mutex* mutex);
+int TryLockMutex(Mutex* mutex);
+int UnlockMutex(Mutex* mutex);
+
+
+}  // namespace alloy
+
+
+#endif  // ALLOY_MUTEX_H_