Rename dirs

[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
new file mode 100644 (file)
index 0000000..5b681e3
--- /dev/null
+++ b/MdePkg/Library/BaseLib/Ia32/RShiftU64.s
@@ -0,0 +1,39 @@
+#------------------------------------------------------------------------------\r
+#\r
+# Copyright (c) 2006, Intel Corporation\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
+#\r
+# Module Name:\r
+#\r
+#   RShiftU64.asm\r
+#\r
+# Abstract:\r
+#\r
+#   64-bit logical right shift function for IA-32\r
+#\r
+#------------------------------------------------------------------------------\r
+\r
+\r
+\r
+     \r
+\r
+.global _RShiftU64\r
+_RShiftU64: \r
+    movb    12(%esp),%cl\r
+    xorl    %edx,%edx\r
+    movl    8(%esp),%eax\r
+    testb   $32,%cl\r
+    cmovz   %eax, %edx\r
+    cmovz   4(%esp), %eax\r
+    shrdl   %cl,%edx,%eax\r
+    shrl    %cl,%edx\r
+    ret\r
+\r
+\r
+\r