Fix bug in AsmCpuVirtual() to return 1 instead of 0 when CPU is in virtual mode.

[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / RShiftU64.c

diff --git a/MdePkg/Library/BaseLib/Ia32/RShiftU64.c b/MdePkg/Library/BaseLib/Ia32/RShiftU64.c
index 7480ebd63927584046f04061765959d043193f51..342b0b4dbf9f5b04c0ad4ebd19b0d3466c5d8f08 100644 (file)
--- a/MdePkg/Library/BaseLib/Ia32/RShiftU64.c
+++ b/MdePkg/Library/BaseLib/Ia32/RShiftU64.c
@@ -1,8 +1,8 @@
 /** @file\r
   64-bit logical right shift function for IA-32\r
 \r
-  Copyright (c) 2006 - 2007, Intel Corporation<BR>\r
-  All rights reserved. This program and the accompanying materials\r
+  Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>\r
+  This program and the accompanying materials\r
   are licensed and made available under the terms and conditions of the BSD License\r
   which accompanies this distribution.  The full text of the license may be found at\r
   http://opensource.org/licenses/bsd-license.php\r
@@ -12,11 +12,22 @@
 \r
 **/\r
 \r
-//\r
-// Include common header file for this module.\r
-//\r
-#include "CommonHeader.h"\r
 \r
+\r
+\r
+/**\r
+  Shifts a 64-bit integer right between 0 and 63 bits. This high bits\r
+  are filled with zeros. The shifted value is returned.\r
+\r
+  This function shifts the 64-bit value Operand to the right by Count bits. The\r
+  high Count bits are set to zero. The shifted value is returned.\r
+\r
+  @param  Operand The 64-bit operand to shift right.\r
+  @param  Count   The number of bits to shift right.\r
+\r
+  @return Operand >> Count\r
+\r
+**/\r
 UINT64\r
 EFIAPI\r
 InternalMathRShiftU64 (\r