Add support fedisableexcept, feenableexcept, fegetexcept and feupdateenv

for SH.

1 files changed, 39 insertions, 0 deletions

diff --git a/sysdeps/sh/sh4/fpu/fedisblxcpt.c b/sysdeps/sh/sh4/fpu/fedisblxcpt.c
new file mode 100644
index 0000000000..029fcc386a
--- /dev/null
+++ b/sysdeps/sh/sh4/fpu/fedisblxcpt.c
@@ -0,0 +1,39 @@
+/* Disable floating-point exceptions.
+   Copyright (C) 2012 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Nobuhiro Iwamatsu <iwamatsu@nigauri.org>, 2012.
+
+   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>
+
+int
+fedisableexcept (int excepts)
+{
+  unsigned int temp, old_exc;
+
+  /* Get the current control register contents.  */
+  _FPU_GETCW (temp);
+
+  old_exc = (temp >> 5) & FE_ALL_EXCEPT;
+
+  excepts &= FE_ALL_EXCEPT;
+
+  temp &= ~(excepts << 5);
+  _FPU_SETCW (temp);
+
+  return old_exc;
+}