d8043ce905
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: "Yao, Jiewen" <jiewen.yao@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16826 6f19259b-4bc3-4df7-8a09-765794883524
48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
/** @file
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Execute 32-bit code in Protected Mode.
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Copyright (c) 2014 - 2015, 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 <Uefi.h>
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#include <FspApi.h>
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typedef
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EFI_STATUS
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(EFIAPI *FSP_FUNCTION) (
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IN VOID *Param1
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);
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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[in] Function The 32bit code entry to be executed.
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@param[in] Param1 The first parameter to pass to 32bit code.
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@return EFI_STATUS.
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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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)
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{
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FSP_FUNCTION EntryFunc;
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EFI_STATUS Status;
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EntryFunc = (FSP_FUNCTION) (UINTN) (Function);
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Status = EntryFunc ((VOID *)(UINTN)Param1);
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return Status;
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}
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