first commit for chrg

rt-thread/components/libc/compilers/picolibc/exit.c

@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2006-2023, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ */
+
+#include <rtthread.h>
+#include <sys/types.h>
+#include <posix/stdlib.h>
+
+/* for exit() and abort() */
+rt_noreturn void _exit (int status)
+{
+    __rt_libc_exit(status);
+    while(1);
+}