From f1baef624fb7119c54c3389a2cd99b108ee08f0e Mon Sep 17 00:00:00 2001
From: vanjeff <vanjeff@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Mon, 2 Jul 2007 09:34:25 +0000
Subject: 1. Port X64, IPF and EBC arch for BaseLib 2. Port X64 arch codes for
 BaseMemoryLibRepStr and BaseMemoryLibSee2

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2955 6f19259b-4bc3-4df7-8a09-765794883524
---
 MdePkg/Library/BaseLib/X64/ReadTsc.S | 38 ++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 MdePkg/Library/BaseLib/X64/ReadTsc.S

(limited to 'MdePkg/Library/BaseLib/X64/ReadTsc.S')

diff --git a/MdePkg/Library/BaseLib/X64/ReadTsc.S b/MdePkg/Library/BaseLib/X64/ReadTsc.S
new file mode 100644
index 0000000000..776ffc2265
--- /dev/null
+++ b/MdePkg/Library/BaseLib/X64/ReadTsc.S
@@ -0,0 +1,38 @@
+#------------------------------------------------------------------------------
+#
+# Copyright (c) 2006, Intel Corporation
+# All rights reserved. This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD License
+# which accompanies this distribution.  The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+# Module Name:
+#
+#   ReadTsc.S
+#
+# Abstract:
+#
+#   AsmReadTsc function
+#
+# Notes:
+#
+#------------------------------------------------------------------------------
+
+
+#------------------------------------------------------------------------------
+# UINT64
+# EFIAPI
+# AsmReadTsc (
+#   VOID
+#   );
+#------------------------------------------------------------------------------
+.global _AsmReadTsc;
+.align 16;
+_AsmReadTsc:
+    rdtsc
+    shl     $0x20, %rdx
+    or      %rdx, %rax
+    ret
-- 
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