Initial port to x86_64 gnu assembly.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@1959 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 36 insertions, 0 deletions

diff --git a/MdePkg/Library/BaseLib/X64/ReadGs.S b/MdePkg/Library/BaseLib/X64/ReadGs.S
new file mode 100644
index 0000000000..f92776c35d
--- /dev/null
+++ b/MdePkg/Library/BaseLib/X64/ReadGs.S
@@ -0,0 +1,36 @@
+#------------------------------------------------------------------------------
+#
+# 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:
+#
+#   ReadGs.S
+#
+# Abstract:
+#
+#   AsmReadGs function
+#
+# Notes:
+#
+#------------------------------------------------------------------------------
+
+
+#------------------------------------------------------------------------------
+# UINT16
+# EFIAPI
+# AsmReadGs (
+#   VOID
+#   );
+#------------------------------------------------------------------------------
+.global _AsmReadGs;
+.align 16;
+_AsmReadGs:
+    mov     %gs, %eax
+    ret