Merge commit 'refs/top-bases/t/bigmem' into t/bigmem

1 files changed, 43 insertions, 0 deletions

diff --git a/sysdeps/arm/setfpucw.c b/sysdeps/arm/setfpucw.c
new file mode 100644
index 0000000000..197d85d911
--- /dev/null
+++ b/sysdeps/arm/setfpucw.c
@@ -0,0 +1,43 @@
+/* Set the FPU control word.
+   Copyright (C) 1996-2015 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 <arm-features.h>
+
+
+void
+__setfpucw (fpu_control_t set)
+{
+  fpu_control_t fpscr, new_fpscr;
+
+  /* Do nothing if a VFP unit isn't present.  */
+  if (!ARM_HAVE_VFP)
+    return;
+
+  _FPU_GETCW (fpscr);
+
+  /* Preserve the reserved bits, and set the rest as the user
+     specified (or the default, if the user gave zero).  */
+  new_fpscr = fpscr & _FPU_RESERVED;
+  new_fpscr |= set & ~_FPU_RESERVED;
+
+  /* Write FPSCR if changed.  */
+  if (new_fpscr != fpscr)
+    _FPU_SETCW (fpscr);
+}