1 files changed, 46 insertions, 0 deletions
diff --git a/ports/sysdeps/arm/setfpucw.c b/ports/sysdeps/arm/setfpucw.c
new file mode 100644
index 0000000000..d0cea32b9d
--- /dev/null
+++ b/ports/sysdeps/arm/setfpucw.c
@@ -0,0 +1,46 @@
+/* Set the FPU control word.
+   Copyright (C) 1996, 1997, 1999, 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library.  If not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <fpu_control.h>
+
+#include <unistd.h>
+#include <ldsodefs.h>
+#include <dl-procinfo.h>
+#include <sysdep.h>
+
+void
+__setfpucw (fpu_control_t set)
+{
+  if (GLRO (dl_hwcap) & HWCAP_ARM_VFP)
+    {
+      fpu_control_t cw;
+
+      /* Fetch the current control word.  */
+      _FPU_GETCW (cw);
+
+      /* Preserve the reserved bits, and set the rest as the user
+	 specified (or the default, if the user gave zero).  */
+      cw &= _FPU_RESERVED;
+      cw |= set & ~_FPU_RESERVED;
+
+      _FPU_SETCW (cw);
+    }
+
+  /* Do nothing if a VFP unit isn't present.  */
+}