Add fesetexcept: arm.

This patch adds an ARM version of fesetexcept.

	* sysdeps/arm/fesetexcept.c: New file.

diff --git a/ChangeLog b/ChangeLog
index d45d73d43ff740b54de52b08e5507cfc7cb7e4dd..977497b5a6ab79bde3591acd00bd4c0e7a1e19d6 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,7 @@
 2016-08-16  Joseph Myers  <joseph@codesourcery.com>
 
+       * sysdeps/arm/fesetexcept.c: New file.
+
        * sysdeps/alpha/fpu/fesetexcept.c: New file.
 
        * sysdeps/aarch64/fpu/fesetexcept.c: New file.

diff --git a/sysdeps/arm/fesetexcept.c b/sysdeps/arm/fesetexcept.c
new file mode 100644 (file)
index 0000000..96a79ae
--- /dev/null
+++ b/sysdeps/arm/fesetexcept.c
@@ -0,0 +1,38 @@
+/* Set given exception flags.  ARM version.
+   Copyright (C) 2016 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 <fenv.h>
+#include <fpu_control.h>
+#include <arm-features.h>
+
+int
+fesetexcept (int excepts)
+{
+  fpu_control_t fpscr, new_fpscr;
+
+  /* Fail if a VFP unit isn't present unless nothing needs to be done.  */
+  if (!ARM_HAVE_VFP)
+    return (excepts != 0);
+
+  _FPU_GETCW (fpscr);
+  new_fpscr = fpscr | (excepts & FE_ALL_EXCEPT);
+  if (new_fpscr != fpscr)
+    _FPU_SETCW (new_fpscr);
+
+  return 0;
+}