+push(@obst_enum_op, " iro_$arch\_last_generated,\n");
+push(@obst_enum_op, " iro_$arch\_last = iro_$arch\_last_generated");
+push(@obst_enum_op, " + $additional_opcodes") if (defined($additional_opcodes));
+push(@obst_enum_op, "\n} $arch\_opcodes;\n\n");