+ /* FIXME: this foreign_function_call_active test is dubious at
+ * best. If a foreign call is made in a pseudo atomic section
+ * (?) or more likely a pseudo atomic section is in a foreign
+ * call then an interrupt is executed immediately. Maybe it
+ * has to do with C code not maintaining pseudo atomic
+ * properly. MG - 2005-08-10
+ *
+ * The foreign_function_call_active used to live at each call-site
+ * to arch_pseudo_atomic_atomic, but this seems clearer.
+ * --NS 2007-05-15 */
+ return (!foreign_function_call_active)
+ && ((*os_context_register_addr(context,reg_ALLOC)) & 4);