(** The main result in this section. *)

Theorem match_callstack_function_entry:
forall fn cenv tf m e m' tm tm' sp f cs args targs le,
build_compilenv fn = (cenv, tf.(fn_stackspace)) ->
tf.(fn_stackspace) <= Ptrofs.max_unsigned ->
list_norepet (map fst (Csharpminor.fn_vars fn)) ->
list_norepet (Csharpminor.fn_params fn) ->
list_disjoint (Csharpminor.fn_params fn) (Csharpminor.fn_temps fn) ->
alloc_variables Csharpminor.empty_env m (Csharpminor.fn_vars fn) e m' ->
bind_parameters (Csharpminor.fn_params fn) args (create_undef_temps fn.(fn_temps)) = Some le ->
Val.inject_list f args targs ->
Mem.alloc tm 0 tf.(fn_stackspace) = (tm', sp) ->
match_callstack f m tm cs (Mem.nextblock m) (Mem.nextblock tm) ->
Mem.inject f m tm ->
let te := set_locals (Csharpminor.fn_temps fn) (set_params targs (Csharpminor.fn_params fn)) in
exists f',
match_callstack f' m' tm'
(Frame cenv tf e le te sp (Mem.nextblock m) (Mem.nextblock m') :: cs)
(Mem.nextblock m') (Mem.nextblock tm')
/\ Mem.inject f' m' tm'.