From af1a266670d040d2f4083ff309d732d648afba2a Mon Sep 17 00:00:00 2001
From: Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com>
Date: Tue, 10 Oct 2023 14:33:42 +0000
Subject: Add submodule dependency files

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
---
 .../UefiShellCEntryLib/UefiShellCEntryLib.c        | 93 ++++++++++++++++++++++
 1 file changed, 93 insertions(+)
 create mode 100644 roms/edk2/ShellPkg/Library/UefiShellCEntryLib/UefiShellCEntryLib.c

(limited to 'roms/edk2/ShellPkg/Library/UefiShellCEntryLib/UefiShellCEntryLib.c')

diff --git a/roms/edk2/ShellPkg/Library/UefiShellCEntryLib/UefiShellCEntryLib.c b/roms/edk2/ShellPkg/Library/UefiShellCEntryLib/UefiShellCEntryLib.c
new file mode 100644
index 000000000..ab5613da5
--- /dev/null
+++ b/roms/edk2/ShellPkg/Library/UefiShellCEntryLib/UefiShellCEntryLib.c
@@ -0,0 +1,93 @@
+/** @file
+  Provides application point extension for "C" style main function
+
+  Copyright (c) 2009 - 2016, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Base.h>
+
+#include <Protocol/SimpleFileSystem.h>
+#include <Protocol/LoadedImage.h>
+#include <Protocol/EfiShellInterface.h>
+#include <Protocol/ShellParameters.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.
+
+  Note that the Shell uses POSITIVE integers for error values, while UEFI
+  uses NEGATIVE values.  If the application is to be used within a script,
+  it needs to return one of the SHELL_STATUS values defined in Protocol/Shell.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);
+    }
+  }
+  return ReturnFromMain;
+}
-- 
cgit