zte's code,first commit

Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/build/uClibc/libpthread/linuxthreads/sysdeps/pthread/sigaction.c b/ap/build/uClibc/libpthread/linuxthreads/sysdeps/pthread/sigaction.c
new file mode 100644
index 0000000..2f2a85c
--- /dev/null
+++ b/ap/build/uClibc/libpthread/linuxthreads/sysdeps/pthread/sigaction.c
@@ -0,0 +1,57 @@
+/* Copyright (C) 2003, 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+   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.  */
+
+/* Somebody please explain what's going on here.  --vda */
+
+/* This is tricky.  GCC doesn't like #include_next in the primary
+   source file and even if it did, the first #include_next is this
+   exact file anyway.  */
+#ifndef LIBC_SIGACTION
+
+# include <bits/libc-lock.h>
+
+# define LIBC_SIGACTION	1
+
+# include "sigaction.c"
+
+# ifndef NOT_IN_libc
+#  ifndef SHARED
+weak_extern (__pthread_sigaction)
+#  endif
+
+int
+__sigaction (sig, act, oact)
+     int sig;
+     const struct sigaction *act;
+     struct sigaction *oact;
+{
+  return __libc_maybe_call2 (pthread_sigaction, (sig, act, oact),
+			     __libc_sigaction (sig, act, oact));
+}
+# else
+weak_alias (__libc_sigaction, __sigaction)
+# endif
+libc_hidden_weak (__sigaction)
+weak_alias (__sigaction, sigaction)
+
+#else
+
+# include_next <sigaction.c>
+
+#endif /* LIBC_SIGACTION */