MdePkg/BaseLib: Support IA32 processors without CMOVx

[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / LShiftU64.asm

diff --git a/MdePkg/Library/BaseLib/Ia32/LShiftU64.asm b/MdePkg/Library/BaseLib/Ia32/LShiftU64.asm
index a5447e8f580ddc3c7c689dec822f7fda10279450..15b724270c4a6559e8e0d01ca0cc9540a19226c8 100644 (file)
--- a/MdePkg/Library/BaseLib/Ia32/LShiftU64.asm
+++ b/MdePkg/Library/BaseLib/Ia32/LShiftU64.asm
@@ -1,6 +1,6 @@
 ;------------------------------------------------------------------------------\r
 ;\r
-; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>\r
+; Copyright (c) 2006 - 2015, 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
@@ -36,8 +36,10 @@ InternalMathLShiftU64   PROC
     xor     eax, eax\r
     mov     edx, [esp + 4]\r
     test    cl, 32                      ; Count >= 32?\r
-    cmovz   eax, edx\r
-    cmovz   edx, [esp + 8]\r
+    jnz     @F\r
+    mov     eax, edx\r
+    mov     edx, [esp + 8]\r
+@@:    \r
     shld    edx, eax, cl\r
     shl     eax, cl\r
     ret\r