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/core.h

@@ -0,0 +1,51 @@
+/**
+ ******************************************************************************
+ * 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_CORE_H_
+#define ALLOY_CORE_H_
+
+// TODO(benvanik): move the common stuff into here?
+#include <xenia/common.h>
+
+#include <alloy/arena.h>
+#include <alloy/mutex.h>
+#include <alloy/string_buffer.h>
+
+
+namespace alloy {
+
+typedef struct XECACHEALIGN vec128_s {
+  union {
+    struct {
+      float     x;
+      float     y;
+      float     z;
+      float     w;
+    };
+    struct {
+      uint32_t  ix;
+      uint32_t  iy;
+      uint32_t  iz;
+      uint32_t  iw;
+    };
+    float       f4[4];
+    uint32_t    i4[4];
+    uint16_t    s8[8];
+    uint8_t     b16[16];
+    struct {
+      uint64_t  low;
+      uint64_t  high;
+    };
+  };
+} vec128_t;
+
+}  // namespace alloy
+
+
+#endif  // ALLOY_CORE_H_