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diff --git a/src/stdlib/__stop_progexec__.S b/src/stdlib/__stop_progexec__.S
new file mode 100644
index 0000000..da4999e
--- /dev/null
+++ b/src/stdlib/__stop_progexec__.S
@@ -0,0 +1,26 @@
+/*****************************************************************
+ * return from main.
+ * can be overwriten by user function with the same name
+ *****************************************************************/
+        .section .fini9, "ax", @progbits
+
+        .weak	__stop_progExec__
+        .func   __stop_progExec__
+
+__stop_progExec__:
+
+        .endfunc
+
+/*****************************************************************
+ * endless loop
+ * can be overwriten by user together with __stop_progExec__
+ * this function always linked together with __stop_progExec__,
+ * because both are located in single source file.
+ *****************************************************************/
+        .section .fini0, "ax", @progbits
+
+        .func   _endless_loop__
+_endless_loop__:
+        jmp  _endless_loop__
+
+        .endfunc