Added RTEMS_CPU_HAS_16_BIT_ADDRESSES constant to disable code

that breaks when the target has 16 bit address space.  One of the H8
multilibs is a 16-bit address space CPU.  When a real attempt is
made to support this CPU model, the code that assumes an address
is 32 bits will have to change.  This constant is probably not
flagging all impacted code.

c/src/exec/score/inline/rtems/score/address.inl

@@ -90,7 +90,11 @@ RTEMS_INLINE_ROUTINE boolean _Addresses_Is_aligned (
   void *address
 )
 {
+#if defined(RTEMS_CPU_HAS_16_BIT_ADDRESSES)
+    return ( ( (unsigned short)address % CPU_ALIGNMENT ) == 0 );
+#else
     return ( ( (unsigned32)address % CPU_ALIGNMENT ) == 0 );
+#endif
 }
 
 /*PAGE

c/src/libmisc/monitor/mon-monitor.c

@@ -124,7 +124,11 @@ rtems_monitor_command_entry_t rtems_monitor_commands[] = {
       "  symbol [ symbolname [symbolname ... ] ]",
       0,
       rtems_monitor_symbol_cmd,
+#if defined(RTEMS_CPU_HAS_16_BIT_ADDRESSES)
+      0,    /* XXX find a way to fix the compile time error on h8 */
+#else
       (unsigned32) &rtems_monitor_symbols,
+#endif
       &rtems_monitor_commands[8],
     },
     { "extension",
@@ -209,7 +213,11 @@ rtems_monitor_command_entry_t rtems_monitor_commands[] = {
       "help [ command [ command ] ]",
       0,
       rtems_monitor_help_cmd,
+#if defined(RTEMS_CPU_HAS_16_BIT_ADDRESSES)
+      0,    /* XXX find a way to fix the compile time error on h8 */
+#else
       (unsigned32) rtems_monitor_commands,
+#endif
       &rtems_monitor_commands[18],
     },
 #ifdef CPU_INVOKE_DEBUGGER