From Steve Papacharalambous:

Add math support for PowerPC e500.

1 files changed, 49 insertions, 0 deletions

diff --git a/libm/powerpc/e500/fpu/feupdateenv.c b/libm/powerpc/e500/fpu/feupdateenv.c
new file mode 100644
index 000000000..03f3af8d9
--- /dev/null
+++ b/libm/powerpc/e500/fpu/feupdateenv.c
@@ -0,0 +1,49 @@
+/* Install given floating-point environment and raise exceptions.
+   Copyright (C) 2004 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Aldy Hernandez <aldyh@redhat.com>, 2004.
+
+   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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include "fenv_libc.h"
+#include <syscall.h>
+#include <sys/prctl.h>
+
+int
+__feupdateenv (const fenv_t *envp)
+{
+  unsigned long fpescr, old, new, pflags;
+  fenv_union_t u;
+  INTERNAL_SYSCALL_DECL (err);
+
+  /* Save the currently set exceptions.  */
+  u.fenv = *envp;
+  new = u.l[1];
+  old = fegetenv_register ();
+  new |= (old & FE_ALL_EXCEPT);
+
+  INTERNAL_SYSCALL (prctl, err, 2, PR_GET_FPEXC, &pflags);
+  pflags |= u.l[0];
+  INTERNAL_SYSCALL (prctl, err, 2, PR_SET_FPEXC, pflags);
+
+  /* Enable and raise (if appropriate) exceptions set in `new'. */
+  fesetenv_register (new);
+  feraiseexcept (new & FE_ALL_EXCEPT);
+
+  /* Success.  */
+  return 0;
+}
+