1 files changed, 55 insertions, 0 deletions
diff --git a/src/vm/coverage.cpp b/src/vm/coverage.cpp
new file mode 100644
index 0000000000..2a5e5ffdfb
--- /dev/null
+++ b/src/vm/coverage.cpp
@@ -0,0 +1,55 @@
+// 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.
+
+
+#include "common.h"
+
+#include "coverage.h"
+
+
+//
+//  This is part of the runtime test teams Code Coverge Tools. Due to the special nature of MSCORLIB.dll
+//  We have to work around several issues (Like the initilization of the Secutiry Manager) to be able to get
+//  Code coverage on mscorlib.dll
+// 
+
+FCIMPL1(unsigned __int64, COMCoverage::nativeCoverBlock, INT32 id)
+{
+    FCALL_CONTRACT;
+
+    unsigned __int64 retVal = 0;
+    HELPER_METHOD_FRAME_BEGIN_RET_0();
+
+    HMODULE ilcovnat = 0;
+    if (id == 1)
+    {
+        ilcovnat = CLRLoadLibrary(W("Ilcovnat.dll"));
+
+        if (ilcovnat)
+        {
+            retVal = (unsigned __int64)GetProcAddress(ilcovnat, "CoverBlockNative");
+        }
+    }
+    else if (id == 2)
+    {
+        ilcovnat = CLRLoadLibrary(W("coverage.dll"));
+
+        if (ilcovnat)
+        {
+            retVal = (unsigned __int64)GetProcAddress(ilcovnat, "CoverageRegisterBinaryWithStruct");
+        }
+    }
+    else if (id == 3)
+    {
+        ilcovnat = CLRLoadLibrary(W("Ilcovnat.dll"));
+        if (ilcovnat)
+        {
+            retVal = (unsigned __int64)GetProcAddress(ilcovnat, "CoverMonRegisterMscorlib");
+        }
+    }
+
+    HELPER_METHOD_FRAME_END();
+    return retVal;
+}
+FCIMPLEND