1 files changed, 41 insertions, 0 deletions
diff --git a/src/debug/ee/amd64/debuggerregdisplayhelper.cpp b/src/debug/ee/amd64/debuggerregdisplayhelper.cpp
new file mode 100644
index 0000000000..0d48a67eea
--- /dev/null
+++ b/src/debug/ee/amd64/debuggerregdisplayhelper.cpp
@@ -0,0 +1,41 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+/* ------------------------------------------------------------------------- *
+ * DebuggerRegDisplayHelper.cpp -- implementation of the platform-dependent 
+// 
+
+ *                                 methods for transferring information between
+ *                                 REGDISPLAY and DebuggerREGDISPLAY
+ * ------------------------------------------------------------------------- */
+
+#include "stdafx.h"
+
+void CopyREGDISPLAY(REGDISPLAY* pDst, REGDISPLAY* pSrc)
+{
+    memcpy((BYTE*)pDst, (BYTE*)pSrc, sizeof(REGDISPLAY));
+
+    pDst->pContext = pSrc->pContext;
+
+    if (pSrc->pCurrentContextPointers == &(pSrc->ctxPtrsOne))
+    {
+        pDst->pCurrentContextPointers = &(pDst->ctxPtrsOne);
+        pDst->pCallerContextPointers  = &(pDst->ctxPtrsTwo);
+    }
+    else
+    {
+        pDst->pCurrentContextPointers = &(pDst->ctxPtrsTwo);
+        pDst->pCallerContextPointers  = &(pDst->ctxPtrsOne);
+    }
+
+    if (pSrc->pCurrentContext == &(pSrc->ctxOne))
+    {
+        pDst->pCurrentContext = &(pDst->ctxOne);
+        pDst->pCallerContext  = &(pDst->ctxTwo);
+    }
+    else
+    {
+        pDst->pCurrentContext = &(pDst->ctxTwo);
+        pDst->pCallerContext  = &(pDst->ctxOne);
+    }
+}