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/** @file
Implementation of IsZeroBuffer function.
The following BaseMemoryLib instances contain the same copy of this file:
BaseMemoryLib
BaseMemoryLibMmx
BaseMemoryLibSse2
BaseMemoryLibRepStr
BaseMemoryLibOptDxe
BaseMemoryLibOptPei
PeiMemoryLib
UefiMemoryLib
Copyright (c) 2016, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include "MemLibInternals.h"
/**
Checks if the contents of a buffer are all zeros.
This function checks whether the contents of a buffer are all zeros. If the
contents are all zeros, return TRUE. Otherwise, return FALSE.
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 buffer to be checked.
@param Length The size of the buffer (in bytes) to be checked.
@retval TRUE Contents of the buffer are all zeros.
@retval FALSE Contents of the buffer are not all zeros.
**/
BOOLEAN
EFIAPI
IsZeroBuffer (
IN CONST VOID *Buffer,
IN UINTN Length
)
{
ASSERT (!(Buffer == NULL && Length > 0));
ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));
return InternalMemIsZeroBuffer (Buffer, Length);
}
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