zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/build/uClibc/libm/powerpc/e500/fpu/feupdateenv.c b/ap/build/uClibc/libm/powerpc/e500/fpu/feupdateenv.c
new file mode 100644
index 0000000..03f3af8
--- /dev/null
+++ b/ap/build/uClibc/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;
+}
+