mirror of https://github.com/acidanthera/audk.git
48 lines
1.3 KiB
C
48 lines
1.3 KiB
C
/** @file
|
|
Execute 32-bit code in Protected Mode.
|
|
|
|
Copyright (c) 2014 - 2015, 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 <Uefi.h>
|
|
#include <FspApi.h>
|
|
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *FSP_FUNCTION) (
|
|
IN VOID *Param1
|
|
);
|
|
|
|
/**
|
|
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[in] Function The 32bit code entry to be executed.
|
|
@param[in] Param1 The first parameter to pass to 32bit code.
|
|
|
|
@return EFI_STATUS.
|
|
**/
|
|
EFI_STATUS
|
|
Execute32BitCode (
|
|
IN UINT64 Function,
|
|
IN UINT64 Param1
|
|
)
|
|
{
|
|
FSP_FUNCTION EntryFunc;
|
|
EFI_STATUS Status;
|
|
|
|
EntryFunc = (FSP_FUNCTION) (UINTN) (Function);
|
|
Status = EntryFunc ((VOID *)(UINTN)Param1);
|
|
|
|
return Status;
|
|
}
|
|
|