Section InternalCall.
(****************The following three conditions are new******************)
(****************The following three conditions are new******************)
(* In the third clause, we now step from  m' to m, and also from f' to f and from tm' to tm******************)
Variable cenv : compilenv.
Variable f : Csharpminor.function.
Variable mu : SM_Injection.
Variable m tm : mem.
Variable cs : callstack.
Variable e : Csharpminor.env.
Variable lenv : temp_env.
Variable k : Csharpminor.cont.
Variable tk : cont.

Lemma MS_step_case_InternalCall: forall
(MCS : structured_match_callstack mu m tm cs (Mem.nextblock m)
(Mem.nextblock tm))
(PRE: REACH_closed m (vis mu) /\
meminj_preserves_globals ge (as_inj mu) /\
(forall b, isGlobalBlock ge b = true -> frgnBlocksSrc mu b = true) /\
sm_valid mu m tm /\ SM_wd mu /\
Mem.inject (as_inj mu) m tm)
vargs targs x m1
(Param1: list_norepet (map fst (Csharpminor.fn_vars f)))
(Param2 : list_norepet (Csharpminor.fn_params f))
(Param3 : list_disjoint (Csharpminor.fn_params f) (fn_temps f))
(AlocVars : alloc_variables empty_env m (Csharpminor.fn_vars f) e m1)
(BindParams: bind_parameters (Csharpminor.fn_params f) vargs
(create_undef_temps (fn_temps f)) = Some lenv)
(MK : match_cont k tk cenv nil cs)
(ISCC : Csharpminor.is_call_cont k)
(ARGSINJ : val_list_inject (restrict (as_inj mu) (vis mu)) vargs targs)
(EQ : transl_function f = OK x),
exists (c2' : CMin_core) m2' mu',
corestep_plus CMin_core_sem tge (CMin_Callstate (AST.Internal x) targs tk) tm c2' m2'
/\ intern_incr mu mu' /\
sm_inject_separated mu mu' m tm /\
sm_locally_allocated mu mu' m tm m1 m2' /\ SM_wd mu' /\
sm_valid mu' m1 m2' /\
Match_cores (CSharpMin_State f (Csharpminor.fn_body f) k e lenv) mu'
(CSharpMin_State f (Csharpminor.fn_body f) k e lenv) m1 c2' m2'.