MdePkg/BaseLib: Support IA32 processors without CMOVx

[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / ARShiftU64.S

diff --git a/MdePkg/Library/BaseLib/Ia32/ARShiftU64.S b/MdePkg/Library/BaseLib/Ia32/ARShiftU64.S
index 5498d2e99196084d01b6a52758ca40a9ded45ce9..9138c423fc0a3c83be6a4f26793939886f171eab 100644 (file)
--- a/MdePkg/Library/BaseLib/Ia32/ARShiftU64.S
+++ b/MdePkg/Library/BaseLib/Ia32/ARShiftU64.S
@@ -1,17 +1,17 @@
 #------------------------------------------------------------------------------\r
 #\r
-# Copyright (c) 2006, Intel Corporation\r
-# All rights reserved. This program and the accompanying materials\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
-# http://opensource.org/licenses/bsd-license.php\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
 #\r
 # Module Name:\r
 #\r
-#   ARShiftU64.asm\r
+#   ARShiftU64.S\r
 #\r
 # Abstract:\r
 #\r
@@ -19,7 +19,7 @@
 #\r
 #------------------------------------------------------------------------------\r
 \r
-.globl ASM_PFX(InternalMathARShiftU64)\r
+ASM_GLOBAL ASM_PFX(InternalMathARShiftU64)\r
 \r
 #------------------------------------------------------------------------------\r
 # UINT64\r
@@ -34,8 +34,10 @@ ASM_PFX(InternalMathARShiftU64):
     movl    8(%esp), %eax\r
     cltd\r
     testb   $32, %cl\r
-    cmovz   %eax, %edx\r
-    cmovz   4(%esp), %eax\r
+    jnz     L0\r
+    movl    %eax, %edx\r
+    movl    4(%esp), %eax\r
+L0:    \r
     shrdl   %cl, %edx, %eax\r
     sar     %cl, %edx\r
     ret\r