Remove some dead code.

Use weak reference to iocshRegister so that the same init code can be used
with full IOC applications (which include the iocsh routines) and also with
IOC test programs (which do not include the iocsh routines).
Don't treat a return from main() as a fatal error condition.

src/RTEMS/base/rtems_init.c

@@ -144,23 +144,22 @@ static void stackCheckCallFunc(const iocshArgBuf *args)
 {
     Stack_check_Dump_usage ();
 }
+
 static void iocshRegisterRTEMS (void)
 {
-    iocshRegister(&netStatFuncDef, netStatCallFunc);
-    iocshRegister(&stackCheckFuncDef, stackCheckCallFunc);
-}
-
-void
-rtems_reboot (const char *name)
-{
-    int c;
-
-    printf ("Are you sure you want to reboot the IOC? ");
-    fflush (stdout);
-    if ((c = getchar ()) == 'Y')
-        LogFatal ("Reboot");
-    while ((c != '\n') && (c != EOF))
-        c = getchar ();
+    /*
+     * By using a weak reference this code will work with full IOC applications
+     * (where iocshRegister is present) and also with test applications
+     * (where iocshRegister is not present).
+     */
+    extern void iocshRegister(const iocshFuncDef *piocshFuncDef,
+                              iocshCallFunc func) __attribute__((weak)) ;
+    void (*rtemsEpicsIocshRegisterFunc)(const iocshFuncDef *piocshFuncDef,
+                                        iocshCallFunc func) = iocshRegister;
+    if (!rtemsEpicsIocshRegisterFunc)
+        return;
+    (*rtemsEpicsIocshRegisterFunc)(&netStatFuncDef, netStatCallFunc);
+    (*rtemsEpicsIocshRegisterFunc)(&stackCheckFuncDef, stackCheckCallFunc);
 }
 
 /*
@@ -202,7 +201,7 @@ Init (rtems_task_argument ignored)
     int i;
     char arg0[] = "RTEMS_IOC";
     char arg1[] = "st.cmd";
-	char *argv[3] = { arg0, arg1, NULL };
+        char *argv[3] = { arg0, arg1, NULL };
 
     /*
      * Create a reasonable environment
@@ -253,8 +252,9 @@ Init (rtems_task_argument ignored)
     printf ("***** Starting EPICS application *****\n");
     iocshRegisterRTEMS ();
     rtems_set_directory ();
-    main ((sizeof argv / sizeof argv[0]) - 1, argv);
-    LogFatal ("Console command interpreter terminated");
+    i = main ((sizeof argv / sizeof argv[0]) - 1, argv);
+    printf ("***** IOC application terminating *****\n");
+    exit (i);
 }
 
 /*