1 files changed, 35 insertions, 0 deletions
diff --git a/OldMdePkg/Library/BaseLib/Ia32/ReadTsc.S b/OldMdePkg/Library/BaseLib/Ia32/ReadTsc.S
new file mode 100644
index 0000000000..cab29661ae
--- /dev/null
+++ b/OldMdePkg/Library/BaseLib/Ia32/ReadTsc.S
@@ -0,0 +1,35 @@
+#------------------------------------------------------------------------------
+#
+# 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.Asm
+#
+# Abstract:
+#
+#   AsmReadTsc function
+#
+# Notes:
+#
+#------------------------------------------------------------------------------
+
+.globl ASM_PFX(AsmReadTsc)
+
+#------------------------------------------------------------------------------
+# UINT64
+# EFIAPI
+# AsmReadTsc (
+#   VOID
+#   );
+#------------------------------------------------------------------------------
+ASM_PFX(AsmReadTsc):
+    rdtsc
+    ret