UefiCpuPkg: Move AsmRelocateApLoopStart from Mpfuncs.nasm to AmdSev.nasm

[mirror_edk2.git] / ShellPkg / Library / UefiShellLevel1CommandsLib / Shift.c

/** @file\r
  Main file for Shift shell level 1 function.\r
\r
  (C) Copyright 2015 Hewlett-Packard Development Company, L.P.<BR>\r
  Copyright (c) 2009 - 2018, Intel Corporation. All rights reserved.<BR>\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include "UefiShellLevel1CommandsLib.h"\r
\r
/**\r
  Function for 'shift' command.\r
\r
  @param[in] ImageHandle  Handle to the Image (NULL if Internal).\r
  @param[in] SystemTable  Pointer to the System Table (NULL if Internal).\r
**/\r
SHELL_STATUS\r
EFIAPI\r
ShellCommandRunShift (\r
  IN EFI_HANDLE        ImageHandle,\r
  IN EFI_SYSTEM_TABLE  *SystemTable\r
  )\r
{\r
  EFI_STATUS   Status;\r
  SCRIPT_FILE  *CurrentScriptFile;\r
  UINTN        LoopVar;\r
\r
  Status = CommandInit ();\r
  ASSERT_EFI_ERROR (Status);\r
\r
  if (!gEfiShellProtocol->BatchIsActive ()) {\r
    ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_NO_SCRIPT), gShellLevel1HiiHandle, L"shift");\r
    return (SHELL_UNSUPPORTED);\r
  }\r
\r
  CurrentScriptFile = ShellCommandGetCurrentScriptFile ();\r
  ASSERT (CurrentScriptFile != NULL);\r
\r
  if (CurrentScriptFile->Argc < 2) {\r
    ShellPrintHiiEx (-1, -1, NULL, STRING_TOKEN (STR_GEN_TOO_FEW), gShellLevel1HiiHandle, L"shift");\r
    return (SHELL_UNSUPPORTED);\r
  }\r
\r
  for (LoopVar = 0; LoopVar < CurrentScriptFile->Argc; LoopVar++) {\r
    if (LoopVar == 0) {\r
      SHELL_FREE_NON_NULL (CurrentScriptFile->Argv[LoopVar]);\r
    }\r
\r
    if (LoopVar < CurrentScriptFile->Argc -1) {\r
      CurrentScriptFile->Argv[LoopVar] = CurrentScriptFile->Argv[LoopVar+1];\r
    } else {\r
      CurrentScriptFile->Argv[LoopVar] = NULL;\r
    }\r
  }\r
\r
  CurrentScriptFile->Argc--;\r
  return (SHELL_SUCCESS);\r
}\r