Inductive valid_genv {F V:Type} (ge:Genv.t F V) (m:mem) : Type :=
  mk_valid_genv :
    (forall b, isGlobalBlock ge b=true -> val_valid (Vptr b Ptrofs.zero) m) ->
    (forall b f, Genv.find_funct_ptr ge b = Some f -> val_valid (Vptr b Ptrofs.zero) m) ->
    valid_genv ge m.Inductive valid_genv {F V:Type} (ge:Genv.t F V) (m:mem) : Type :=
  mk_valid_genv :
    (forall b, isGlobalBlock ge b=true -> val_valid (Vptr b Ptrofs.zero) m) ->
    (forall b f, Genv.find_funct_ptr ge b = Some f -> val_valid (Vptr b Ptrofs.zero) m) ->
    valid_genv ge m.

Lemma loadbytes_valid: forall m (WD: mem_wd m) b ofs' n bytes (LD: Mem.loadbytes m b (Int.unsigned ofs') n = Some bytes) v (B: In v bytes), memval_inject (Mem.flat_inj (Mem.nextblock m)) v v.