X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=MdePkg%2FLibrary%2FBaseLib%2FIa32%2FReadCr4.c;h=f948f82b77eaf8a9a1be90f095c0917eb5ecd845;hp=bc5dd727f0cdebc3a9020f1bdf7c27b7ca0bba7c;hb=9344f0921518309295da89c221d10cbead8531aa;hpb=23086ba84cbb13350a2464b857b197eef67f1361

diff --git a/MdePkg/Library/BaseLib/Ia32/ReadCr4.c b/MdePkg/Library/BaseLib/Ia32/ReadCr4.c
index bc5dd727f0..f948f82b77 100644
--- a/MdePkg/Library/BaseLib/Ia32/ReadCr4.c
+++ b/MdePkg/Library/BaseLib/Ia32/ReadCr4.c
@@ -1,19 +1,24 @@
 /** @file
   AsmReadCr4 function
 
-  Copyright (c) 2006, Intel Corporation<BR>
-  All rights reserved. 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.
+  Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
 
 **/
 
-#if _MSC_EXTENSIONS
 
+
+
+/**
+  Reads the current value of the Control Register 4 (CR4).
+
+  Reads and returns the current value of CR4. This function is only available
+  on IA-32 and x64. This returns a 32-bit value on IA-32 and a 64-bit value on
+  x64.
+
+  @return The value of the Control Register 4 (CR4).
+
+**/
 UINTN
 EFIAPI
 AsmReadCr4 (
@@ -27,4 +32,3 @@ AsmReadCr4 (
   }
 }
 
-#endif