1 files changed, 20 insertions, 0 deletions
diff --git a/StdLib/LibC/Main/X64/fpu_rmode.S b/StdLib/LibC/Main/X64/fpu_rmode.S
new file mode 100644
index 0000000000..4999102582
--- /dev/null
+++ b/StdLib/LibC/Main/X64/fpu_rmode.S
@@ -0,0 +1,20 @@
+#------------------------------------------------------------------------------
+#
+# Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
+# 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.
+#
+#------------------------------------------------------------------------------
+
+ASM_GLOBAL ASM_PFX(internal_FPU_rmode)
+ASM_PFX(internal_FPU_rmode):
+  fnstcw -4(%rsp)
+  movl -4(%rsp),%eax
+  shrl $10,%eax
+  andl $3,%eax
+  ret