MdePkg/BaseLib: Support IA32 processors without CMOVx

[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / LRotU64.S

diff --git a/MdePkg/Library/BaseLib/Ia32/LRotU64.S b/MdePkg/Library/BaseLib/Ia32/LRotU64.S
index e9aeeb6387d821fc878f4bae88ef251a74f69e7e..ff450fa1f5cc8f029c27f14464830ee92457c424 100644 (file)
--- a/MdePkg/Library/BaseLib/Ia32/LRotU64.S
+++ b/MdePkg/Library/BaseLib/Ia32/LRotU64.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
@@ -39,8 +39,10 @@ ASM_PFX(InternalMathLRotU64):
     rorl    %cl, %ebx\r
     shldl   %cl, %ebx, %eax\r
     testb   $32, %cl                    # Count >= 32?\r
-    cmovnz  %eax, %ecx\r
-    cmovnz  %edx, %eax\r
-    cmovnz  %ecx, %edx\r
+    jz      L0\r
+    movl    %eax, %ecx\r
+    movl    %edx, %eax\r
+    movl    %ecx, %edx\r
+L0:    \r
     pop     %ebx\r
     ret\r