Files
slimbootloader/MdePkg/Library/BaseMemoryLibRepStr/CompareMemWrapper.c
Guo Dong 416f2d95da Sync edk2 basetool mdepkg (#2121)
* Sync BaseTools to align with edk2-stable202311

Keep the SBL specific change (e.g. Lz4).

Signed-off-by: Guo Dong <guo.dong@intel.com>

* feat: Sync MdePkg from EDK2 edk2-stable202311 branch

Only sync required file without any changes to EDK2 files.

Signed-off-by: Guo Dong <guo.dong@intel.com>

* feat: Update MdePkg for SBL after sync from EDK2

Signed-off-by: Guo Dong <guo.dong@intel.com>

* Update SBL after updating Basetool and MdePkg

After Sync BaseTool and MdePkg to edk2-stable202311,
Need update SBL code to align with this change.

Signed-off-by: Guo Dong <guo.dong@intel.com>

* feat: rollback some changes after mdepkg sync

New change from MdePkg requires new NASM version.
To make sure NASM 2.14.02 still works, just rollback
few changes.

Signed-off-by: Guo Dong <guo.dong@intel.com>

* feat: Update component size to fix build failure

After syncing BaseTool and MdePkg, some components would
have a little bigger size. So update the config to fix the
build failure.

Signed-off-by: Guo Dong <guo.dong@intel.com>

* feat: Remove unused asl code

Some ASL files don't exist but they are included in other asl files.
It would cause build failure with new build BaseTool. So just remove
them to fix the build failure.

Signed-off-by: Guo Dong <guo.dong@intel.com>

---------

Signed-off-by: Guo Dong <guo.dong@intel.com>
2024-03-08 13:43:46 -05:00

62 lines
2.0 KiB
C

/** @file
CompareMem() 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"
/**
Compares the contents of two buffers.
This function compares Length bytes of SourceBuffer to Length bytes of DestinationBuffer.
If all Length bytes of the two buffers are identical, then 0 is returned. Otherwise, the
value returned is the first mismatched byte in SourceBuffer subtracted from the first
mismatched byte in DestinationBuffer.
If Length > 0 and DestinationBuffer is NULL, then ASSERT().
If Length > 0 and SourceBuffer is NULL, then ASSERT().
If Length is greater than (MAX_ADDRESS - DestinationBuffer + 1), then ASSERT().
If Length is greater than (MAX_ADDRESS - SourceBuffer + 1), then ASSERT().
@param DestinationBuffer The pointer to the destination buffer to compare.
@param SourceBuffer The pointer to the source buffer to compare.
@param Length The number of bytes to compare.
@return 0 All Length bytes of the two buffers are identical.
@retval Non-zero The first mismatched byte in SourceBuffer subtracted from the first
mismatched byte in DestinationBuffer.
**/
INTN
EFIAPI
CompareMem (
IN CONST VOID *DestinationBuffer,
IN CONST VOID *SourceBuffer,
IN UINTN Length
)
{
if ((Length == 0) || (DestinationBuffer == SourceBuffer)) {
return 0;
}
ASSERT (DestinationBuffer != NULL);
ASSERT (SourceBuffer != NULL);
ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)DestinationBuffer));
ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)SourceBuffer));
return InternalMemCompareMem (DestinationBuffer, SourceBuffer, Length);
}