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/backend/tracing.h

@@ -0,0 +1,54 @@
+/**
+ ******************************************************************************
+ * 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_BACKEND_TRACING_H_
+#define ALLOY_BACKEND_TRACING_H_
+
+#include <alloy/tracing/tracing.h>
+#include <alloy/tracing/event_type.h>
+
+
+namespace alloy {
+namespace backend {
+
+const uint32_t ALLOY_BACKEND = alloy::tracing::EventType::ALLOY_BACKEND;
+
+
+class EventType {
+public:
+  enum {
+    ALLOY_BACKEND_INIT                  = ALLOY_BACKEND | (1),
+    ALLOY_BACKEND_DEINIT                = ALLOY_BACKEND | (2),
+
+    ALLOY_BACKEND_ASSEMBLER             = ALLOY_BACKEND | (1 << 25),
+    ALLOY_BACKEND_ASSEMBLER_INIT        = ALLOY_BACKEND_ASSEMBLER | (1),
+    ALLOY_BACKEND_ASSEMBLER_DEINIT      = ALLOY_BACKEND_ASSEMBLER | (2),
+  };
+
+  typedef struct {
+    static const uint32_t event_type = ALLOY_BACKEND_INIT;
+  } Init;
+  typedef struct {
+    static const uint32_t event_type = ALLOY_BACKEND_DEINIT;
+  } Deinit;
+
+  typedef struct {
+    static const uint32_t event_type = ALLOY_BACKEND_ASSEMBLER_INIT;
+  } AssemblerInit;
+  typedef struct {
+    static const uint32_t event_type = ALLOY_BACKEND_ASSEMBLER_DEINIT;
+  } AssemblerDeinit;
+};
+
+
+}  // namespace backend
+}  // namespace alloy
+
+
+#endif  // ALLOY_BACKEND_TRACING_H_