pure sdk for main

csky/csi_kernel/rhino/driver/hook_weak.c

@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2016 YunOS Project. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+void __attribute__((weak)) lpm_idle_hook(void)
+{
+}
+
+void __attribute__((weak)) lpm_idle_pre_hook(void)
+{
+}