Moving alloy/ into xenia/cpu/ to start simplifying things.

src/xenia/cpu/backend/x64/x64_code_cache.h

@@ -0,0 +1,48 @@
+/**
+ ******************************************************************************
+ * 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 XENIA_BACKEND_X64_X64_CODE_CACHE_H_
+#define XENIA_BACKEND_X64_X64_CODE_CACHE_H_
+
+#include <mutex>
+
+namespace xe {
+namespace cpu {
+namespace backend {
+namespace x64 {
+
+class X64CodeChunk;
+
+class X64CodeCache {
+ public:
+  X64CodeCache(size_t chunk_size = DEFAULT_CHUNK_SIZE);
+  virtual ~X64CodeCache();
+
+  int Initialize();
+
+  // TODO(benvanik): ELF serialization/etc
+  // TODO(benvanik): keep track of code blocks
+  // TODO(benvanik): padding/guards/etc
+
+  void* PlaceCode(void* machine_code, size_t code_size, size_t stack_size);
+
+ private:
+  const static size_t DEFAULT_CHUNK_SIZE = 4 * 1024 * 1024;
+  std::mutex lock_;
+  size_t chunk_size_;
+  X64CodeChunk* head_chunk_;
+  X64CodeChunk* active_chunk_;
+};
+
+}  // namespace x64
+}  // namespace backend
+}  // namespace cpu
+}  // namespace xe
+
+#endif  // XENIA_BACKEND_X64_X64_CODE_CACHE_H_