source: vbox/trunk/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseMemoryLib/SetMem64Wrapper.c

/** @file
  SetMem64() implementation.

  The following BaseMemoryLib instances contain the same copy of this file:
    BaseMemoryLib
    BaseMemoryLibMmx
    BaseMemoryLibSse2
    BaseMemoryLibRepStr
    BaseMemoryLibOptDxe
    BaseMemoryLibOptPei
    PeiMemoryLib
    UefiMemoryLib

  Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#include "MemLibInternals.h"

/**
  Fills a target buffer with a 64-bit value, and returns the target buffer.

  This function fills Length bytes of Buffer with the 64-bit value specified by
  Value, and returns Buffer. Value is repeated every 64-bits in for Length
  bytes of Buffer.

  If Length > 0 and Buffer is NULL, then ASSERT().
  If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
  If Buffer is not aligned on a 64-bit boundary, then ASSERT().
  If Length is not aligned on a 64-bit boundary, then ASSERT().

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

  @return Buffer.

**/
VOID *
EFIAPI
SetMem64 (
  OUT VOID   *Buffer,
  IN UINTN   Length,
  IN UINT64  Value
  )
{
  if (Length == 0) {
    return Buffer;
  }

  ASSERT (Buffer != NULL);
  ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));
  ASSERT ((((UINTN)Buffer) & (sizeof (Value) - 1)) == 0);
  ASSERT ((Length & (sizeof (Value) - 1)) == 0);

  return InternalMemSetMem64 (Buffer, Length / sizeof (Value), Value);
}