1 files changed, 55 insertions, 0 deletions
diff --git a/sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feholdexcept.c b/sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feholdexcept.c
new file mode 100644
index 0000000000..afd225e2cf
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/e500/nofpu/atomic-feholdexcept.c
@@ -0,0 +1,55 @@
+/* Store current floating-point environment and clear 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_feholdexcept (fenv_t *envp)
+{
+  fenv_union_t u;
+  INTERNAL_SYSCALL_DECL (err);
+  int r;
+
+  /* Get the current state.  */
+  r = INTERNAL_SYSCALL (prctl, err, 2, PR_GET_FPEXC, &u.l[0]);
+  if (INTERNAL_SYSCALL_ERROR_P (r, err))
+    abort ();
+
+  u.l[1] = fegetenv_register ();
+  *envp = u.fenv;
+
+  /* Clear everything except for the rounding mode and trapping to the
+     kernel.  */
+  u.l[0] &= ~(PR_FP_EXC_DIV
+	      | PR_FP_EXC_OVF
+	      | PR_FP_EXC_UND
+	      | PR_FP_EXC_RES
+	      | PR_FP_EXC_INV);
+  u.l[1] &= SPEFSCR_FRMC | (SPEFSCR_ALL_EXCEPT_ENABLE & ~SPEFSCR_FINXE);
+
+  /* Put the new state in effect.  */
+  fesetenv_register (u.l[1]);
+  r = INTERNAL_SYSCALL (prctl, err, 2, PR_SET_FPEXC,
+			u.l[0] | PR_FP_EXC_SW_ENABLE);
+  if (INTERNAL_SYSCALL_ERROR_P (r, err))
+    abort ();
+}