Definition bytes_of_init_data (i: init_data): list memval :=
  match i with
  | Init_int8 n => inj_bytes (encode_int 1%nat (Int.unsigned n))
  | Init_int16 n => inj_bytes (encode_int 2%nat (Int.unsigned n))
  | Init_int32 n => inj_bytes (encode_int 4%nat (Int.unsigned n))
  | Init_int64 n => inj_bytes (encode_int 8%nat (Int64.unsigned n))
  | Init_float32 n => inj_bytes (encode_int 4%nat (Int.unsigned (Float32.to_bits n)))
  | Init_float64 n => inj_bytes (encode_int 8%nat (Int64.unsigned (Float.to_bits n)))
  | Init_space n => list_repeat (Z.to_nat n) (Byte Byte.zero)
  | Init_addrof id ofs =>
      match find_symbol ge id with
      | Some b => inj_value (if Archi.ptr64 then Q64 else Q32) (Vptr b ofs)
      | None   => list_repeat (if Archi.ptr64 then 8%nat else 4%nat) Undef
      end
  end.Remark init_data_size_addrof:
  forall id ofs, init_data_size (Init_addrof id ofs) = size_chunk Mptr.

Lemma store_init_data_loadbytes: forall m b p i m', store_init_data m b p i = Some m' -> readbytes_as_zero m b p (init_data_size i) -> Mem.loadbytes m' b p (init_data_size i) = Some (bytes_of_init_data i).