MdePkg: Replace BSD License with BSD+Patent License

[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 cc878e878c6c071c44824c4ab0cbfe575abb6fe3..35d8437056e30d05e58d52474b5d10ea2844d4b0 100644 (file)
--- a/MdePkg/Library/BaseLib/Ia32/RShiftU64.c
+++ b/MdePkg/Library/BaseLib/Ia32/RShiftU64.c
@@ -1,17 +1,27 @@
 /** @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
-  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
-\r
-  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+  Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>\r
+  SPDX-License-Identifier: BSD-2-Clause-Patent\r
 \r
 **/\r
 \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
@@ -24,8 +34,10 @@ InternalMathRShiftU64 (
     xor     edx, edx\r
     mov     eax, dword ptr [Operand + 4]\r
     test    cl, 32\r
-    cmovz   edx, eax\r
-    cmovz   eax, dword ptr [Operand + 0]\r
+    jnz     L0\r
+    mov     edx, eax\r
+    mov     eax, dword ptr [Operand + 0]\r
+L0:\r
     shrd    eax, edx, cl\r
     shr     edx, cl\r
   }\r