mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-30 12:43:41 +01:00
49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
/** @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>
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
#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);
|
|
}
|