1 files changed, 59 insertions, 0 deletions
diff --git a/sysdeps/arm/feenablxcpt.c b/sysdeps/arm/feenablxcpt.c
new file mode 100644
index 0000000000..b286ec5565
--- /dev/null
+++ b/sysdeps/arm/feenablxcpt.c
@@ -0,0 +1,59 @@
+/* Enable floating-point exceptions.
+   Copyright (C) 2001-2014 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Philip Blundell <philb@gnu.org>, 2001.
+
+   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 <fenv.h>
+#include <fpu_control.h>
+#include <arm-features.h>
+
+
+int
+feenableexcept (int excepts)
+{
+  if (ARM_HAVE_VFP)
+    {
+      unsigned long int new_exc, old_exc;
+
+      _FPU_GETCW(new_exc);
+
+      old_exc = (new_exc >> FE_EXCEPT_SHIFT) & FE_ALL_EXCEPT;
+
+      excepts &= FE_ALL_EXCEPT;
+
+      new_exc |= (excepts << FE_EXCEPT_SHIFT);
+
+      _FPU_SETCW(new_exc);
+
+      if (excepts != 0)
+	{
+	  /* VFPv3 and VFPv4 do not support trapping exceptions, so
+	     test whether the relevant bits were set and fail if
+	     not.  */
+	  unsigned int temp;
+	  _FPU_GETCW (temp);
+	  if ((temp & (excepts << FE_EXCEPT_SHIFT))
+	      != (excepts << FE_EXCEPT_SHIFT))
+	    return -1;
+	}
+
+      return old_exc;
+    }
+
+  /* Unsupported, so return -1 for failure.  */
+  return -1;
+}