1 files changed, 44 insertions, 0 deletions
diff --git a/src/core/hle/service/ldr_ro/memory_synchronizer.h b/src/core/hle/service/ldr_ro/memory_synchronizer.h
new file mode 100644
index 000000000..92f267912
--- /dev/null
+++ b/src/core/hle/service/ldr_ro/memory_synchronizer.h
@@ -0,0 +1,44 @@
+// Copyright 2016 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include <vector>
+
+#include "core/memory.h"
+
+////////////////////////////////////////////////////////////////////////////////////////////////////
+// Namespace LDR_RO
+
+namespace LDR_RO {
+
+/**
+ * This is a work-around before we implement memory aliasing.
+ * CRS and CRO are mapped (aliased) to another memory when loading. Games can read
+ * from both the original buffer and the mapping memory. So we use this to synchronize
+ * all original buffers with mapping memory after modifying the content.
+ */
+class MemorySynchronizer {
+public:
+    void Clear();
+
+    void AddMemoryBlock(VAddr mapping, VAddr original, u32 size);
+    void ResizeMemoryBlock(VAddr mapping, VAddr original, u32 size);
+    void RemoveMemoryBlock(VAddr mapping, VAddr original);
+
+    void SynchronizeOriginalMemory();
+
+private:
+    struct MemoryBlock {
+        VAddr mapping;
+        VAddr original;
+        u32 size;
+    };
+
+    std::vector<MemoryBlock> memory_blocks;
+
+    auto FindMemoryBlock(VAddr mapping, VAddr original);
+};
+
+} // namespace