2 files changed, 41 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseLib/BaseLib.inf b/MdePkg/Library/BaseLib/BaseLib.inf
index c4e3bb7758..84cf8957e2 100644
--- a/MdePkg/Library/BaseLib/BaseLib.inf
+++ b/MdePkg/Library/BaseLib/BaseLib.inf
@@ -573,6 +573,7 @@
   X64/WriteCr3.asm | MSFT
   X64/WriteCr2.nasm| MSFT
   X64/WriteCr2.asm | MSFT
+  X64/WriteCr0.nasm| MSFT
   X64/WriteCr0.asm | MSFT
   X64/ReadCr4.asm | MSFT
   X64/ReadCr3.asm | MSFT
@@ -709,6 +710,7 @@
   X64/WriteCr3.asm | INTEL
   X64/WriteCr2.nasm| INTEL
   X64/WriteCr2.asm | INTEL
+  X64/WriteCr0.nasm| INTEL
   X64/WriteCr0.asm | INTEL
   X64/ReadCr4.asm | INTEL
   X64/ReadCr3.asm | INTEL
diff --git a/MdePkg/Library/BaseLib/X64/WriteCr0.nasm b/MdePkg/Library/BaseLib/X64/WriteCr0.nasm
new file mode 100644
index 0000000000..44c474e34f
--- /dev/null
+++ b/MdePkg/Library/BaseLib/X64/WriteCr0.nasm
@@ -0,0 +1,39 @@
+;------------------------------------------------------------------------------
+;
+; Copyright (c) 2006, 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.
+;
+; Module Name:
+;
+;   WriteCr0.Asm
+;
+; Abstract:
+;
+;   AsmWriteCr0 function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+    DEFAULT REL
+    SECTION .text
+
+;------------------------------------------------------------------------------
+; UINTN
+; EFIAPI
+; AsmWriteCr0 (
+;   UINTN  Cr0
+;   );
+;------------------------------------------------------------------------------
+global ASM_PFX(AsmWriteCr0)
+ASM_PFX(AsmWriteCr0):
+    mov     cr0, rcx
+    mov     rax, rcx
+    ret
+