1 files changed, 43 insertions, 0 deletions
diff --git a/EdkCompatibilityPkg/Compatibility/BootScriptSaveOnS3SaveStateThunk/IA32/DispatchExecute.c b/EdkCompatibilityPkg/Compatibility/BootScriptSaveOnS3SaveStateThunk/IA32/DispatchExecute.c
new file mode 100644
index 0000000000..7a3c9143b6
--- /dev/null
+++ b/EdkCompatibilityPkg/Compatibility/BootScriptSaveOnS3SaveStateThunk/IA32/DispatchExecute.c
@@ -0,0 +1,43 @@
+/** @file
+  Execute 32-bit code in Long Mode
+  Provide a thunk function to transition from long mode to compatibility mode to execute 32-bit code and then transit
+  back to long mode.
+  
+  Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
+  This program and the accompanying materials
+  are licensed and made available under the terms and conditions of the BSD License
+  which accompanies this distribution.  The full text of the license may be found at
+  http://opensource.org/licenses/bsd-license.php
+
+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+#include "ScriptSave.h"
+/**
+  Wrapper for a thunk  to transition from long mode to compatibility mode to execute 32-bit code and then transit back to
+  long mode.
+  
+  @param  Function     The 32bit code entry to be executed.
+  @param  Param1       The first parameter to pass to 32bit code
+  @param  Param2       The second parameter to pass to 32bit code
+  @retval EFI_SUCCESS  Execute 32bit code successfully.
+  @retval other        Something wrong when execute the 32bit code 
+              
+**/  
+EFI_STATUS
+Execute32BitCode (
+  IN UINT64      Function,
+  IN UINT64      Param1,
+  IN UINT64      Param2
+  )
+{
+  DISPATCH_ENTRYPOINT_FUNC  EntryFunc;
+  EFI_STATUS                 Status;
+
+  EntryFunc = (DISPATCH_ENTRYPOINT_FUNC) (UINTN) (Function);
+  Status    = EntryFunc ((VOID *)(UINTN)Param1, (VOID *)(UINTN)Param2);
+
+  return Status;
+}
+