diff options
Diffstat (limited to 'py/binary.c')
| -rw-r--r-- | py/binary.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/py/binary.c b/py/binary.c index 7a8ed46111..95e82a688d 100644 --- a/py/binary.c +++ b/py/binary.c @@ -77,6 +77,52 @@ mp_obj_t mp_binary_get_val(char typecode, void *p, int index) { return MP_OBJ_NEW_SMALL_INT(val); } +mp_obj_t mp_binary_get_val_unaligned_le(char typecode, byte **ptr) { + machine_int_t val = 0; + byte *p = *ptr; + switch (typecode) { + case 'b': + val = (int8_t)*p++; + break; + case BYTEARRAY_TYPECODE: + case 'B': + val = *p++; + break; + case 'h': + val = (int16_t)((p[1] << 8) | p[0]); + break; + case 'H': + val = (p[1] << 8) | p[0]; + break; + case 'i': + case 'l': + val = (p[3] << 24) | (p[2] << 16) | (p[1] << 8) | p[0]; + *ptr = p + 4; + return mp_obj_new_int(val); + case 'I': + case 'L': + val = (p[3] << 24) | (p[2] << 16) | (p[1] << 8) | p[0]; + *ptr = p + 4; + return mp_obj_new_int_from_uint(val); +#if 0 //TODO +#if MICROPY_LONGINT_IMPL != MICROPY_LONGINT_IMPL_NONE + case 'q': + case 'Q': + // TODO: Explode API more to cover signedness + return mp_obj_new_int_from_ll(((long long*)p)[index]); +#endif +#if MICROPY_ENABLE_FLOAT + case 'f': + return mp_obj_new_float(((float*)p)[index]); + case 'd': + return mp_obj_new_float(((double*)p)[index]); +#endif +#endif + } + *ptr = p; + return MP_OBJ_NEW_SMALL_INT(val); +} + void mp_binary_set_val(char typecode, void *p, int index, mp_obj_t val_in) { machine_int_t val = 0; if (MP_OBJ_IS_INT(val_in)) { |