Support blocking server.

Ubiquitous/XiZi_AIoT/services/app/test_irq.h

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+/*
+ * Copyright (c) 2020 AIIT XUOS Lab
+ * XiUOS is licensed under Mulan PSL v2.
+ * You can use this software according to the terms and conditions of the Mulan PSL v2.
+ * You may obtain a copy of Mulan PSL v2 at:
+ *        http://license.coscl.org.cn/MulanPSL2
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PSL v2 for more details.
+ */
+#include "libipc.h"
+#include "libserial.h"
+#include "usyscall.h"
+
+IPC_SERVICES(IpcSwIntrHandler, Ipc_intr_3, Ipc_wait_intr_3);
+
+enum {
+    SW_INTERRUPT_3 = 3,
+};