1 files changed, 79 insertions, 0 deletions
diff --git a/src/vm/rtlfunctions.h b/src/vm/rtlfunctions.h
new file mode 100644
index 0000000000..9d1d46b6f8
--- /dev/null
+++ b/src/vm/rtlfunctions.h
@@ -0,0 +1,79 @@
+// 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.
+
+
+
+#ifndef __RTLFUNCTIONS_H__
+#define __RTLFUNCTIONS_H__
+
+#ifdef WIN64EXCEPTIONS
+
+enum EEDynamicFunctionTableType
+{
+    DYNFNTABLE_JIT = 0,
+    DYNFNTABLE_STUB = 1,
+    DYNFNTABLE_INVALID = -1,
+
+    DYNFNTABLE_FIRST = DYNFNTABLE_JIT,
+    DYNFNTABLE_LAST = DYNFNTABLE_STUB,
+};
+
+// Used by OutOfProcessFunctionTableCallback in DLLS\mscordbg\DebugSupport.cpp
+// to figure out how to parse a dynamic function table that was registered
+// with a callback.
+inline
+EEDynamicFunctionTableType IdentifyDynamicFunctionTableTypeFromContext (PVOID pvContext)
+{
+    EEDynamicFunctionTableType type = (EEDynamicFunctionTableType)((SIZE_T)pvContext & 3);
+    if (type < DYNFNTABLE_FIRST || type > DYNFNTABLE_LAST)
+        type = DYNFNTABLE_INVALID;
+    return type;
+}
+
+inline
+PVOID EncodeDynamicFunctionTableContext (PVOID pvContext, EEDynamicFunctionTableType type)
+{
+    _ASSERTE(type >= DYNFNTABLE_FIRST && type <= DYNFNTABLE_LAST);
+    return (PVOID)((SIZE_T)pvContext | type);
+}
+
+inline
+PVOID DecodeDynamicFunctionTableContext (PVOID pvContext)
+{
+    return (PVOID)((SIZE_T)pvContext & ~3);
+}
+
+
+#define DYNAMIC_FUNCTION_TABLE_MAX_RANGE LONG_MAX
+
+#endif // WIN64EXCEPTIONS
+
+
+#if defined(WIN64EXCEPTIONS) && !defined(DACCESS_COMPILE) && !defined(CROSSGEN_COMPILE) && !defined(FEATURE_PAL)
+
+// Wrapper for RtlInstallFunctionTableCallback.
+VOID InstallEEFunctionTable(
+        PVOID pvTableID,
+        PVOID pvStartRange,
+        ULONG cbRange,
+        PGET_RUNTIME_FUNCTION_CALLBACK pfnGetRuntimeFunctionCallback,
+        PVOID pvContext,
+        EEDynamicFunctionTableType TableType);
+
+inline
+VOID DeleteEEFunctionTable(
+        PVOID pvTableID)
+{
+    RtlDeleteFunctionTable((PT_RUNTIME_FUNCTION)((ULONG64)pvTableID | 3));
+}
+
+#else // WIN64EXCEPTIONS && !DACCESS_COMPILE && !CROSSGEN_COMPILE && !FEATURE_PAL
+
+#define InstallEEFunctionTable(pvTableID, pvStartRange, cbRange, pfnGetRuntimeFunctionCallback, pvContext, TableType) do { } while (0)
+#define DeleteEEFunctionTable(pvTableID) do { } while (0)
+
+#endif // WIN64EXCEPTIONS && !DACCESS_COMPILE && !CROSSGEN_COMPILE && !FEATURE_PAL
+
+
+#endif // !__RTLFUNCTIONS_H__