source: vbox/trunk/src/VBox/Devices/EFI/FirmwareNew/MdePkg/Library/PeiMemoryLib/ZeroMemWrapper.c

/** @file
  ZeroMem() implementation.

  The following BaseMemoryLib instances contain the same copy of this file:

    BaseMemoryLib
    BaseMemoryLibMmx
    BaseMemoryLibSse2
    BaseMemoryLibRepStr
    BaseMemoryLibOptDxe
    BaseMemoryLibOptPei
    PeiMemoryLib
    UefiMemoryLib

  Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#include "MemLibInternals.h"

/**
  Fills a target buffer with zeros, and returns the target buffer.

  This function fills Length bytes of Buffer with zeros, and returns Buffer.

  If Length > 0 and Buffer is NULL, then ASSERT().
  If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().

  @param  Buffer      The pointer to the target buffer to fill with zeros.
  @param  Length      The number of bytes in Buffer to fill with zeros.

  @return Buffer.

**/
VOID *
EFIAPI
ZeroMem (
  OUT VOID  *Buffer,
  IN UINTN  Length
  )
{
  if (Length == 0) {
    return Buffer;
  }

  ASSERT (Buffer != NULL);
  ASSERT (Length <= (MAX_ADDRESS - (UINTN)Buffer + 1));
  return InternalMemZeroMem (Buffer, Length);
}