/** @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); | |
} |