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/** @file
Provides application point extension for "C" style main funciton
Copyright (c) 2009 - 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 <Base.h>
#include <Protocol/SimpleFileSystem.h>
#include <Protocol/LoadedImage.h>
#include <Protocol/EfiShellInterface.h>
#include <Protocol/EfiShellParameters.h>
#include <Library/ShellCEntryLib.h>
#include <Library/DebugLib.h>
/**
UEFI entry point for an application that will in turn call the
ShellAppMain function which has parameters similar to a standard C
main function.
An application that uses UefiShellCEntryLib must have a ShellAppMain
function as prototyped in Include/Library/ShellCEntryLib.h.
@param ImageHandle The image handle of the UEFI Application.
@param SystemTable A pointer to the EFI System Table.
@retval EFI_SUCCESS The application exited normally.
@retval Other An error occurred.
**/
EFI_STATUS
EFIAPI
ShellCEntryLib (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
INTN ReturnFromMain;
EFI_SHELL_PARAMETERS_PROTOCOL *EfiShellParametersProtocol;
EFI_SHELL_INTERFACE *EfiShellInterface;
EFI_STATUS Status;
ReturnFromMain = -1;
EfiShellParametersProtocol = NULL;
EfiShellInterface = NULL;
Status = SystemTable->BootServices->OpenProtocol(ImageHandle,
&gEfiShellParametersProtocolGuid,
(VOID **)&EfiShellParametersProtocol,
ImageHandle,
NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (!EFI_ERROR(Status)) {
//
// use shell 2.0 interface
//
ReturnFromMain = ShellAppMain (
EfiShellParametersProtocol->Argc,
EfiShellParametersProtocol->Argv
);
} else {
//
// try to get shell 1.0 interface instead.
//
Status = SystemTable->BootServices->OpenProtocol(ImageHandle,
&gEfiShellInterfaceGuid,
(VOID **)&EfiShellInterface,
ImageHandle,
NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (!EFI_ERROR(Status)) {
//
// use shell 1.0 interface
//
ReturnFromMain = ShellAppMain (
EfiShellInterface->Argc,
EfiShellInterface->Argv
);
} else {
ASSERT(FALSE);
}
}
if (ReturnFromMain == 0) {
return (EFI_SUCCESS);
} else {
return (EFI_UNSUPPORTED);
}
}
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