d766b22843
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11189 6f19259b-4bc3-4df7-8a09-765794883524
44 lines
1.5 KiB
C
44 lines
1.5 KiB
C
/** @file
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Execute 32-bit code in Long Mode
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Provide a thunk function to transition from long mode to compatibility mode to execute 32-bit code and then transit
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back to long mode.
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Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include "ScriptSave.h"
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/**
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Wrapper for a thunk to transition from long mode to compatibility mode to execute 32-bit code and then transit back to
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long mode.
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@param Function The 32bit code entry to be executed.
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@param Param1 The first parameter to pass to 32bit code
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@param Param2 The second parameter to pass to 32bit code
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@retval EFI_SUCCESS Execute 32bit code successfully.
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@retval other Something wrong when execute the 32bit code
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**/
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EFI_STATUS
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Execute32BitCode (
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IN UINT64 Function,
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IN UINT64 Param1,
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IN UINT64 Param2
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)
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{
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DISPATCH_ENTRYPOINT_FUNC EntryFunc;
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EFI_STATUS Status;
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EntryFunc = (DISPATCH_ENTRYPOINT_FUNC) (UINTN) (Function);
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Status = EntryFunc ((VOID *)(UINTN)Param1, (VOID *)(UINTN)Param2);
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return Status;
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}
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