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This patch removed global variable usages in ShellLib. It is required when running Shell in early stage from flash. In this case global variable is read-only. All memory should be allocated from stack or heap. Signed-off-by: Maurice Ma <maurice.ma@intel.com>
70 lines
1.6 KiB
C
70 lines
1.6 KiB
C
/** @file
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Shell command `help` to display the list of supported shell commands.
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Copyright (c) 2017 - 2019, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Library/ShellLib.h>
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#include <Library/DebugLib.h>
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#include "Shell.h"
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/**
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Display list of supported shell commands.
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@param[in] Shell shell instance
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@param[in] Argc number of command line arguments
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@param[in] Argv command line arguments
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@retval EFI_SUCCESS
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**/
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STATIC
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EFI_STATUS
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EFIAPI
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ShellCommandHelpFunc (
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IN SHELL *Shell,
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IN UINTN Argc,
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IN CHAR16 *Argv[]
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);
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CONST SHELL_COMMAND ShellCommandHelp = {
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L"help",
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L"List supported commands",
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&ShellCommandHelpFunc
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};
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/**
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Display list of supported shell commands.
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@param[in] Shell shell instance
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@param[in] Argc number of command line arguments
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@param[in] Argv command line arguments
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@retval EFI_SUCCESS
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**/
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STATIC
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EFI_STATUS
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EFIAPI
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ShellCommandHelpFunc (
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IN SHELL *Shell,
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IN UINTN Argc,
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IN CHAR16 *Argv[]
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)
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{
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LIST_ENTRY *EntryList;
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LIST_ENTRY *Link;
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SHELL_COMMAND_LIST_ENTRY *Entry;
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EntryList = &Shell->CommandEntryList;
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for (Link = EntryList->ForwardLink; Link != EntryList; Link = Link->ForwardLink) {
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Entry = CR (Link, SHELL_COMMAND_LIST_ENTRY, Link, SHELL_COMMAND_LIST_ENTRY_SIGNATURE);
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ShellPrint (L"%-8s - %s\n", Entry->ShellCommand->Name, Entry->ShellCommand->Desc);
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}
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return EFI_SUCCESS;
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}
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