1 files changed, 50 insertions, 0 deletions
diff --git a/sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feclearexcept.c b/sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feclearexcept.c
new file mode 100644
index 0000000000..9005119f78
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feclearexcept.c
@@ -0,0 +1,50 @@
+/* Clear floating-point exceptions for atomic compound assignment.
+   e500 version.
+   Copyright (C) 2004-2013 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_libc.h>
+#include <stdlib.h>
+#include <sysdep.h>
+#include <sys/prctl.h>
+
+void
+__atomic_feclearexcept (void)
+{
+  unsigned int fpescr, old_fpescr;
+
+  /* Get the current state.  */
+  old_fpescr = fpescr = fegetenv_register ();
+
+  /* Clear the relevant bits.  */
+  fpescr &= ~SPEFSCR_ALL_EXCEPT;
+
+  /* Put the new state in effect.  */
+  fesetenv_register (fpescr);
+
+  /* Let the kernel know if the "invalid" or "underflow" bit was
+     cleared.  */
+  if (old_fpescr & (SPEFSCR_FINVS | SPEFSCR_FUNFS))
+    {
+      int pflags __attribute__ ((__unused__)), r;
+      INTERNAL_SYSCALL_DECL (err);
+
+      r = INTERNAL_SYSCALL (prctl, err, 2, PR_GET_FPEXC, &pflags);
+      if (INTERNAL_SYSCALL_ERROR_P (r, err))
+	abort ();
+    }
+}