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/** @file
Provides application point extension for "C" style main funciton
Copyright (c) 2009, Intel Corporation
All rights reserved. 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/EfiShellInterface.h>
#include <Protocol/EfiShellParameters.h>
#include <Library/DebugLib.h>
INTN
EFIAPI
ShellAppMain (
IN INTN Argc,
IN CHAR16 **Argv
);
/**
UEFI entry point for an application that will in turn call a C
style ShellAppMain function.
This application must have a function defined as follows:
INTN
EFIAPI
ShellAppMain (
IN INTN Argc,
IN CHAR16 **Argv
);
**/
EFI_STATUS
EFIAPI
ShellCEntryLib (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
INT32 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 (
EfiShellInterface->Argc,
EfiShellInterface->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 (
EfiShellParametersProtocol->Argc,
EfiShellParametersProtocol->Argv
);
} else {
ASSERT(FALSE);
}
}
if (ReturnFromMain == 0) {
return (EFI_SUCCESS);
} else {
return (EFI_UNSUPPORTED);
}
}
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