diff options
| -rw-r--r-- | py/mpconfig.h | 8 | ||||
| -rw-r--r-- | py/obj.h | 2 |
2 files changed, 9 insertions, 1 deletions
diff --git a/py/mpconfig.h b/py/mpconfig.h index e8c8fcc596..b235d6fe66 100644 --- a/py/mpconfig.h +++ b/py/mpconfig.h @@ -536,6 +536,14 @@ typedef double mp_float_t; /*****************************************************************************/ /* Miscellaneous settings */ +// All uPy objects in ROM must be aligned on at least a 4 byte boundary +// so that the small-int/qstr/pointer distinction can be made. For machines +// that don't do this (eg 16-bit CPU), define the following macro to something +// like __attribute__((aligned(4))). +#ifndef MICROPY_OBJ_BASE_ALIGNMENT +#define MICROPY_OBJ_BASE_ALIGNMENT +#endif + // On embedded platforms, these will typically enable/disable irqs. #ifndef MICROPY_BEGIN_ATOMIC_SECTION #define MICROPY_BEGIN_ATOMIC_SECTION() (0) @@ -46,7 +46,7 @@ typedef machine_const_ptr_t mp_const_obj_t; struct _mp_obj_type_t; struct _mp_obj_base_t { - const struct _mp_obj_type_t *type; + const struct _mp_obj_type_t *type MICROPY_OBJ_BASE_ALIGNMENT; }; typedef struct _mp_obj_base_t mp_obj_base_t; |