MdePkg/BaseLib: Support IA32 processors without CMOVx

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

diff --git a/MdePkg/Library/BaseLib/Ia32/RShiftU64.S b/MdePkg/Library/BaseLib/Ia32/RShiftU64.S
index 17cdedb212efddd3f9eb2428dacb10e69df3b04a..0bf9292281ab8c8a076b7580808a44d1d2cf7c21 100644 (file)
--- a/MdePkg/Library/BaseLib/Ia32/RShiftU64.S
+++ b/MdePkg/Library/BaseLib/Ia32/RShiftU64.S
@@ -1,6 +1,6 @@
 #------------------------------------------------------------------------------\r
 #\r
-# Copyright (c) 2006 - 2008, 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
@@ -37,8 +37,10 @@ ASM_PFX(InternalMathRShiftU64):
     xorl    %edx, %edx\r
     movl    8(%esp), %eax\r
     testb   $32, %cl                    # Count >= 32?\r
-    cmovz   %eax, %edx\r
-    cmovz   0x4(%esp), %eax\r
+    jnz     L0\r
+    movl    %eax, %edx\r
+    movl    0x4(%esp), %eax\r
+L0:    \r
     shrdl   %cl, %edx, %eax\r
     shr     %cl, %edx\r
     ret\r