(** ** Properties related to [store] *)

(* Specifications: *)
Theorem valid_access_store:
forall m1 chunk b ofs v,
valid_access m1 chunk b ofs Writable ->
{ m2: mem | store chunk m1 b ofs v = Some m2 }.
Lemma store_mem_contents:
mem_contents m2 = PMap.set b (setN (encode_val chunk v) ofs m1.(mem_contents)#b) m1.(mem_contents).
Theorem perm_store_1:
forall b' ofs' k p, perm m1 b' ofs' k p -> perm m2 b' ofs' k p.
Theorem perm_store_2:
forall b' ofs' k p, perm m2 b' ofs' k p -> perm m1 b' ofs' k p.