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100 lines
3.3 KiB
100 lines
3.3 KiB
4 years ago
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/** @file
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Provides application point extension for "C" style main function
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Copyright (c) 2009 - 2016, 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 <Base.h>
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#include <Protocol/SimpleFileSystem.h>
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#include <Protocol/LoadedImage.h>
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#include <Protocol/EfiShellInterface.h>
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#include <Protocol/ShellParameters.h>
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#include <Library/ShellCEntryLib.h>
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#include <Library/DebugLib.h>
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/**
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UEFI entry point for an application that will in turn call the
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ShellAppMain function which has parameters similar to a standard C
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main function.
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An application that uses UefiShellCEntryLib must have a ShellAppMain
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function as prototyped in Include/Library/ShellCEntryLib.h.
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Note that the Shell uses POSITIVE integers for error values, while UEFI
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uses NEGATIVE values. If the application is to be used within a script,
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it needs to return one of the SHELL_STATUS values defined in Protocol/Shell.h.
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@param ImageHandle The image handle of the UEFI Application.
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@param SystemTable A pointer to the EFI System Table.
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@retval EFI_SUCCESS The application exited normally.
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@retval Other An error occurred.
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**/
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EFI_STATUS
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EFIAPI
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ShellCEntryLib (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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INTN ReturnFromMain;
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EFI_SHELL_PARAMETERS_PROTOCOL *EfiShellParametersProtocol;
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EFI_SHELL_INTERFACE *EfiShellInterface;
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EFI_STATUS Status;
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ReturnFromMain = -1;
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EfiShellParametersProtocol = NULL;
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EfiShellInterface = NULL;
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Status = SystemTable->BootServices->OpenProtocol(ImageHandle,
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&gEfiShellParametersProtocolGuid,
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(VOID **)&EfiShellParametersProtocol,
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ImageHandle,
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NULL,
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EFI_OPEN_PROTOCOL_GET_PROTOCOL
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);
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if (!EFI_ERROR(Status)) {
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//
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// use shell 2.0 interface
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//
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ReturnFromMain = ShellAppMain (
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EfiShellParametersProtocol->Argc,
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EfiShellParametersProtocol->Argv
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);
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} else {
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//
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// try to get shell 1.0 interface instead.
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//
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Status = SystemTable->BootServices->OpenProtocol(ImageHandle,
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&gEfiShellInterfaceGuid,
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(VOID **)&EfiShellInterface,
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ImageHandle,
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NULL,
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EFI_OPEN_PROTOCOL_GET_PROTOCOL
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);
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if (!EFI_ERROR(Status)) {
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//
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// use shell 1.0 interface
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//
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ReturnFromMain = ShellAppMain (
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EfiShellInterface->Argc,
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EfiShellInterface->Argv
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);
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} else {
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ASSERT(FALSE);
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}
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}
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return ReturnFromMain;
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}
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