1 files changed, 13 insertions, 0 deletions
diff --git a/py/objexcept.h b/py/objexcept.h
index f67651a7e..7c3076224 100644
--- a/py/objexcept.h
+++ b/py/objexcept.h
@@ -37,4 +37,17 @@ typedef struct _mp_obj_exception_t {
     mp_obj_tuple_t *args;
 } mp_obj_exception_t;
 
+void mp_obj_exception_print(const mp_print_t *print, mp_obj_t o_in, mp_print_kind_t kind);
+void mp_obj_exception_attr(mp_obj_t self_in, qstr attr, mp_obj_t *dest);
+
+#define MP_DEFINE_EXCEPTION(exc_name, base_name) \
+const mp_obj_type_t mp_type_ ## exc_name = { \
+    { &mp_type_type }, \
+    .name = MP_QSTR_ ## exc_name, \
+    .print = mp_obj_exception_print, \
+    .make_new = mp_obj_exception_make_new, \
+    .attr = mp_obj_exception_attr, \
+    .parent = &mp_type_ ## base_name, \
+};
+
 #endif // MICROPY_INCLUDED_PY_OBJEXCEPT_H