Bring in snapshot of the MdePkg from Tianocore's EDK2 project at gitvendor/edk2/7babb4372e6a34cbbc54249b25056272a5a9924c

hash 7babb4372e6a34cbbc54249b25056272a5a9924c From 2017-Mar-03.

EDK2 is Intel's BSD Licensed UEFI implementation. We'll be bringing in
various routines from there rather than reimplementing them from
scratch for libefivar and the EFI boot loader.

The upstream repo has ^M ending on everything (sometimes multiple
times!), so the following script was run prior to import so changes we
have to do don't first include changing every line:

% find . -type f | xargs -n 1 sed -I.BAK -e `printf "s/\r//g"`
% find . -name \*.BAK | xargs rm

Also, only the MdePkg was brought in (it's 17MB, while the entire repo
is 250MB). It's almost completely certain nothing else will be used,
but if it is, it can be brough in along side MdePkg in the future.

Obtained from: https://github.com/tianocore/edk2.git

1 files changed, 67 insertions, 0 deletions

diff --git a/MdePkg/Library/PeiMemoryLib/ScanMem64Wrapper.c b/MdePkg/Library/PeiMemoryLib/ScanMem64Wrapper.c
new file mode 100644
index 000000000000..80af31a43cbc
--- /dev/null
+++ b/MdePkg/Library/PeiMemoryLib/ScanMem64Wrapper.c
@@ -0,0 +1,67 @@
+/** @file
+  ScanMem64() implementation.
+
+  The following BaseMemoryLib instances contain the same copy of this file:
+
+    BaseMemoryLib
+    BaseMemoryLibMmx
+    BaseMemoryLibSse2
+    BaseMemoryLibRepStr
+    BaseMemoryLibOptDxe
+    BaseMemoryLibOptPei
+    PeiMemoryLib
+    UefiMemoryLib
+
+  Copyright (c) 2006 - 2009, 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"
+
+/**
+  Scans a target buffer for a 64-bit value, and returns a pointer to the matching 64-bit value
+  in the target buffer.
+
+  This function searches the target buffer specified by Buffer and Length from the lowest
+  address to the highest address for a 64-bit value that matches Value.  If a match is found,
+  then a pointer to the matching byte in the target buffer is returned.  If no match is found,
+  then NULL is returned.  If Length is 0, then NULL is returned.
+  
+  If Length > 0 and Buffer is NULL, 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().
+  If Length is greater than (MAX_ADDRESS - Buffer + 1), then ASSERT().
+
+  @param  Buffer      The pointer to the target buffer to scan.
+  @param  Length      The number of bytes in Buffer to scan.
+  @param  Value       The value to search for in the target buffer.
+
+  @return A pointer to the matching byte in the target buffer or NULL otherwise.
+
+**/
+VOID *
+EFIAPI
+ScanMem64 (
+  IN CONST VOID  *Buffer,
+  IN UINTN       Length,
+  IN UINT64      Value
+  )
+{
+  if (Length == 0) {
+    return NULL;
+  }
+
+  ASSERT (Buffer != NULL);
+  ASSERT (((UINTN)Buffer & (sizeof (Value) - 1)) == 0);
+  ASSERT ((Length - 1) <= (MAX_ADDRESS - (UINTN)Buffer));
+  ASSERT ((Length & (sizeof (Value) - 1)) == 0);
+
+  return (VOID*)InternalMemScanMem64 (Buffer, Length / sizeof (Value), Value);
+}