StandaloneMmPkg: StandaloneMmMemLib: Extends support for X64 architecture

This change extends StandaloneMmMemLib library to support X64
architecture. The implementation is ported from MdePkg/Library/SmmMemLib.

Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Supreeth Venkatesh <supreeth.venkatesh@arm.com>

Signed-off-by: Kun Qin <kun.q@outlook.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>

StandaloneMmPkg/Library/StandaloneMmMemLib/StandaloneMmMemLib.inf

@@ -8,6 +8,7 @@
 #
 #  Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>
 #  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.<BR>
+#  Copyright (c) Microsoft Corporation.
 #
 #  SPDX-License-Identifier: BSD-2-Clause-Patent
 #
@@ -22,16 +23,20 @@
   PI_SPECIFICATION_VERSION       = 0x00010032
   LIBRARY_CLASS                  = MemLib|MM_STANDALONE MM_CORE_STANDALONE
   CONSTRUCTOR                    = MemLibConstructor
+  DESTRUCTOR                     = MemLibDestructor
 
 #
 # The following information is for reference only and not required by the build tools.
 #
-#  VALID_ARCHITECTURES           = AARCH64
+#  VALID_ARCHITECTURES           = IA32 X64 AARCH64
 #
 
 [Sources.Common]
   StandaloneMmMemLib.c
 
+[Sources.IA32, Sources.X64]
+  X86StandaloneMmMemLibInternal.c
+
 [Sources.AARCH64]
   AArch64/StandaloneMmMemLibInternal.c
 
@@ -42,3 +47,9 @@
 [LibraryClasses]
   BaseMemoryLib
   DebugLib
+  HobLib
+  MemoryAllocationLib
+
+[Guids]
+  gMmCoreDataHobGuid                  ## SOMETIMES_CONSUMES ## HOB
+  gEfiMmPeiMmramMemoryReserveGuid     ## SOMETIMES_CONSUMES ## HOB