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/frontend/ppc/ppc_scanner.h

@@ -0,0 +1,44 @@
+/**
+ ******************************************************************************
+ * 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_FRONTEND_PPC_PPC_SCANNER_H_
+#define ALLOY_FRONTEND_PPC_PPC_SCANNER_H_
+
+#include <alloy/core.h>
+#include <alloy/runtime/symbol_info.h>
+
+
+namespace alloy {
+namespace frontend {
+namespace ppc {
+
+class PPCFrontend;
+
+
+class PPCScanner {
+public:
+  PPCScanner(PPCFrontend* frontend);
+  ~PPCScanner();
+
+  int FindExtents(runtime::FunctionInfo* symbol_info);
+
+private:
+  bool IsRestGprLr(uint64_t address);
+
+private:
+  PPCFrontend* frontend_;
+};
+
+
+}  // namespace ppc
+}  // namespace frontend
+}  // namespace alloy
+
+
+#endif  // ALLOY_FRONTEND_PPC_PPC_SCANNER_H_