(*LENB: We omit the clauses INJ and PG, since they are required for the
  enitre mu, not just restrict mu (vis mu), and hence better enforced
  uniformly in definition MatchCore below*)
Inductive structured_match_cores: core_data -> SM_Injection -> CSharpMin_core -> mem -> CMin_core -> mem -> Prop :=
  | SMC_states:
      forall d fn s k e le m tfn ts tk sp te tm cenv xenv mu lo hi cs sz
      (TRF: transl_funbody cenv sz fn = OK tfn)
      (TR: transl_stmt cenv xenv s = OK ts)
      (*(MINJ: Mem.inject (as_inj mu) m tm)*)
      (MCS: structured_match_callstack mu m tm
               (Frame cenv tfn e le te sp lo hi :: cs)
               (Mem.nextblock m) (Mem.nextblock tm))
      (MK: match_cont k tk  cenv xenv cs)
      (*(PG: meminj_preserves_globals ge (as_inj mu))*),
      structured_match_cores d mu (CSharpMin_State fn s k e le) m
                   (CMin_State tfn ts tk (Vptr sp Int.zero) te) tm
  | SMC_state_seq:
      forall d fn s1 s2 k e le m tfn ts1 tk sp te tm cenv xenv mu lo hi cs sz
      (TRF: transl_funbody cenv sz fn = OK tfn)
      (TR: transl_stmt cenv xenv s1 = OK ts1)
      (*(MINJ: Mem.inject (as_inj mu) m tm)*)
      (MCS: structured_match_callstack mu m tm
               (Frame cenv tfn e le te sp lo hi :: cs)
               (Mem.nextblock m) (Mem.nextblock tm))
      (MK: match_cont (Csharpminor.Kseq s2 k) tk cenv xenv cs)
      (*(PG: meminj_preserves_globals ge (as_inj mu))*),
      structured_match_cores d mu (CSharpMin_State fn (Csharpminor.Sseq s1 s2) k e le) m
                   (CMin_State tfn ts1 tk (Vptr sp Int.zero) te) tm
  | SMC_callstate:
      forall d fd args k m tfd targs tk tm mu cs cenv
      (TR: transl_fundef fd = OK tfd)
      (*(MINJ: Mem.inject (as_inj mu) m tm)*)
      (MCS: structured_match_callstack mu m tm cs (Mem.nextblock m) (Mem.nextblock tm))
      (MK: match_cont k tk cenv nil cs)
      (ISCC: Csharpminor.is_call_cont k)
      (ARGSINJ: val_list_inject (restrict (as_inj mu) (vis mu)) args targs)
      (*(PG: meminj_preserves_globals ge (as_inj mu))*),

      structured_match_cores d mu (CSharpMin_Callstate fd args k) m
                   (CMin_Callstate tfd targs tk) tm
  | SMC_returnstate:
      forall d v k m tv tk tm mu cs cenv
      (*(MINJ: Mem.inject (as_inj mu) m tm)*)
      (MCS: structured_match_callstack mu m tm cs (Mem.nextblock m) (Mem.nextblock tm))
      (MK: match_cont k tk cenv nil cs)
      (RESINJ: val_inject (restrict (as_inj mu) (vis mu)) v tv)
      (*(PG: meminj_preserves_globals ge (as_inj mu))*),
      structured_match_cores d mu (CSharpMin_Returnstate v k) m
                   (CMin_Returnstate tv tk) tm.(*LENB: We omit the clauses INJ and PG, since they are required for the
  enitre mu, not just restrict mu (vis mu), and hence better enforced
  uniformly in definition MatchCore below*)
Inductive structured_match_cores: core_data -> SM_Injection -> CSharpMin_core -> mem -> CMin_core -> mem -> Prop :=
  | SMC_states:
      forall d fn s k e le m tfn ts tk sp te tm cenv xenv mu lo hi cs sz
      (TRF: transl_funbody cenv sz fn = OK tfn)
      (TR: transl_stmt cenv xenv s = OK ts)
      (*(MINJ: Mem.inject (as_inj mu) m tm)*)
      (MCS: structured_match_callstack mu m tm
               (Frame cenv tfn e le te sp lo hi :: cs)
               (Mem.nextblock m) (Mem.nextblock tm))
      (MK: match_cont k tk  cenv xenv cs)
      (*(PG: meminj_preserves_globals ge (as_inj mu))*),
      structured_match_cores d mu (CSharpMin_State fn s k e le) m
                   (CMin_State tfn ts tk (Vptr sp Int.zero) te) tm
  | SMC_state_seq:
      forall d fn s1 s2 k e le m tfn ts1 tk sp te tm cenv xenv mu lo hi cs sz
      (TRF: transl_funbody cenv sz fn = OK tfn)
      (TR: transl_stmt cenv xenv s1 = OK ts1)
      (*(MINJ: Mem.inject (as_inj mu) m tm)*)
      (MCS: structured_match_callstack mu m tm
               (Frame cenv tfn e le te sp lo hi :: cs)
               (Mem.nextblock m) (Mem.nextblock tm))
      (MK: match_cont (Csharpminor.Kseq s2 k) tk cenv xenv cs)
      (*(PG: meminj_preserves_globals ge (as_inj mu))*),
      structured_match_cores d mu (CSharpMin_State fn (Csharpminor.Sseq s1 s2) k e le) m
                   (CMin_State tfn ts1 tk (Vptr sp Int.zero) te) tm
  | SMC_callstate:
      forall d fd args k m tfd targs tk tm mu cs cenv
      (TR: transl_fundef fd = OK tfd)
      (*(MINJ: Mem.inject (as_inj mu) m tm)*)
      (MCS: structured_match_callstack mu m tm cs (Mem.nextblock m) (Mem.nextblock tm))
      (MK: match_cont k tk cenv nil cs)
      (ISCC: Csharpminor.is_call_cont k)
      (ARGSINJ: val_list_inject (restrict (as_inj mu) (vis mu)) args targs)
      (*(PG: meminj_preserves_globals ge (as_inj mu))*),

      structured_match_cores d mu (CSharpMin_Callstate fd args k) m
                   (CMin_Callstate tfd targs tk) tm
  | SMC_returnstate:
      forall d v k m tv tk tm mu cs cenv
      (*(MINJ: Mem.inject (as_inj mu) m tm)*)
      (MCS: structured_match_callstack mu m tm cs (Mem.nextblock m) (Mem.nextblock tm))
      (MK: match_cont k tk cenv nil cs)
      (RESINJ: val_inject (restrict (as_inj mu) (vis mu)) v tv)
      (*(PG: meminj_preserves_globals ge (as_inj mu))*),
      structured_match_cores d mu (CSharpMin_Returnstate v k) m
                   (CMin_Returnstate tv tk) tm.(*LENB: We omit the clauses INJ and PG, since they are required for the
  enitre mu, not just restrict mu (vis mu), and hence better enforced
  uniformly in definition MatchCore below*)
Inductive structured_match_cores: core_data -> SM_Injection -> CSharpMin_core -> mem -> CMin_core -> mem -> Prop :=
  | SMC_states:
      forall d fn s k e le m tfn ts tk sp te tm cenv xenv mu lo hi cs sz
      (TRF: transl_funbody cenv sz fn = OK tfn)
      (TR: transl_stmt cenv xenv s = OK ts)
      (*(MINJ: Mem.inject (as_inj mu) m tm)*)
      (MCS: structured_match_callstack mu m tm
               (Frame cenv tfn e le te sp lo hi :: cs)
               (Mem.nextblock m) (Mem.nextblock tm))
      (MK: match_cont k tk  cenv xenv cs)
      (*(PG: meminj_preserves_globals ge (as_inj mu))*),
      structured_match_cores d mu (CSharpMin_State fn s k e le) m
                   (CMin_State tfn ts tk (Vptr sp Int.zero) te) tm
  | SMC_state_seq:
      forall d fn s1 s2 k e le m tfn ts1 tk sp te tm cenv xenv mu lo hi cs sz
      (TRF: transl_funbody cenv sz fn = OK tfn)
      (TR: transl_stmt cenv xenv s1 = OK ts1)
      (*(MINJ: Mem.inject (as_inj mu) m tm)*)
      (MCS: structured_match_callstack mu m tm
               (Frame cenv tfn e le te sp lo hi :: cs)
               (Mem.nextblock m) (Mem.nextblock tm))
      (MK: match_cont (Csharpminor.Kseq s2 k) tk cenv xenv cs)
      (*(PG: meminj_preserves_globals ge (as_inj mu))*),
      structured_match_cores d mu (CSharpMin_State fn (Csharpminor.Sseq s1 s2) k e le) m
                   (CMin_State tfn ts1 tk (Vptr sp Int.zero) te) tm
  | SMC_callstate:
      forall d fd args k m tfd targs tk tm mu cs cenv
      (TR: transl_fundef fd = OK tfd)
      (*(MINJ: Mem.inject (as_inj mu) m tm)*)
      (MCS: structured_match_callstack mu m tm cs (Mem.nextblock m) (Mem.nextblock tm))
      (MK: match_cont k tk cenv nil cs)
      (ISCC: Csharpminor.is_call_cont k)
      (ARGSINJ: val_list_inject (restrict (as_inj mu) (vis mu)) args targs)
      (*(PG: meminj_preserves_globals ge (as_inj mu))*),

      structured_match_cores d mu (CSharpMin_Callstate fd args k) m
                   (CMin_Callstate tfd targs tk) tm
  | SMC_returnstate:
      forall d v k m tv tk tm mu cs cenv
      (*(MINJ: Mem.inject (as_inj mu) m tm)*)
      (MCS: structured_match_callstack mu m tm cs (Mem.nextblock m) (Mem.nextblock tm))
      (MK: match_cont k tk cenv nil cs)
      (RESINJ: val_inject (restrict (as_inj mu) (vis mu)) v tv)
      (*(PG: meminj_preserves_globals ge (as_inj mu))*),
      structured_match_cores d mu (CSharpMin_Returnstate v k) m
                   (CMin_Returnstate tv tk) tm.(*LENB: We omit the clauses INJ and PG, since they are required for the
  enitre mu, not just restrict mu (vis mu), and hence better enforced
  uniformly in definition MatchCore below*)
Inductive structured_match_cores: core_data -> SM_Injection -> CSharpMin_core -> mem -> CMin_core -> mem -> Prop :=
  | SMC_states:
      forall d fn s k e le m tfn ts tk sp te tm cenv xenv mu lo hi cs sz
      (TRF: transl_funbody cenv sz fn = OK tfn)
      (TR: transl_stmt cenv xenv s = OK ts)
      (*(MINJ: Mem.inject (as_inj mu) m tm)*)
      (MCS: structured_match_callstack mu m tm
               (Frame cenv tfn e le te sp lo hi :: cs)
               (Mem.nextblock m) (Mem.nextblock tm))
      (MK: match_cont k tk  cenv xenv cs)
      (*(PG: meminj_preserves_globals ge (as_inj mu))*),
      structured_match_cores d mu (CSharpMin_State fn s k e le) m
                   (CMin_State tfn ts tk (Vptr sp Int.zero) te) tm
  | SMC_state_seq:
      forall d fn s1 s2 k e le m tfn ts1 tk sp te tm cenv xenv mu lo hi cs sz
      (TRF: transl_funbody cenv sz fn = OK tfn)
      (TR: transl_stmt cenv xenv s1 = OK ts1)
      (*(MINJ: Mem.inject (as_inj mu) m tm)*)
      (MCS: structured_match_callstack mu m tm
               (Frame cenv tfn e le te sp lo hi :: cs)
               (Mem.nextblock m) (Mem.nextblock tm))
      (MK: match_cont (Csharpminor.Kseq s2 k) tk cenv xenv cs)
      (*(PG: meminj_preserves_globals ge (as_inj mu))*),
      structured_match_cores d mu (CSharpMin_State fn (Csharpminor.Sseq s1 s2) k e le) m
                   (CMin_State tfn ts1 tk (Vptr sp Int.zero) te) tm
  | SMC_callstate:
      forall d fd args k m tfd targs tk tm mu cs cenv
      (TR: transl_fundef fd = OK tfd)
      (*(MINJ: Mem.inject (as_inj mu) m tm)*)
      (MCS: structured_match_callstack mu m tm cs (Mem.nextblock m) (Mem.nextblock tm))
      (MK: match_cont k tk cenv nil cs)
      (ISCC: Csharpminor.is_call_cont k)
      (ARGSINJ: val_list_inject (restrict (as_inj mu) (vis mu)) args targs)
      (*(PG: meminj_preserves_globals ge (as_inj mu))*),

      structured_match_cores d mu (CSharpMin_Callstate fd args k) m
                   (CMin_Callstate tfd targs tk) tm
  | SMC_returnstate:
      forall d v k m tv tk tm mu cs cenv
      (*(MINJ: Mem.inject (as_inj mu) m tm)*)
      (MCS: structured_match_callstack mu m tm cs (Mem.nextblock m) (Mem.nextblock tm))
      (MK: match_cont k tk cenv nil cs)
      (RESINJ: val_inject (restrict (as_inj mu) (vis mu)) v tv)
      (*(PG: meminj_preserves_globals ge (as_inj mu))*),
      structured_match_cores d mu (CSharpMin_Returnstate v k) m
                   (CMin_Returnstate tv tk) tm.(*LENB: We omit the clauses INJ and PG, since they are required for the
  enitre mu, not just restrict mu (vis mu), and hence better enforced
  uniformly in definition MatchCore below*)
Inductive structured_match_cores: core_data -> SM_Injection -> CSharpMin_core -> mem -> CMin_core -> mem -> Prop :=
  | SMC_states:
      forall d fn s k e le m tfn ts tk sp te tm cenv xenv mu lo hi cs sz
      (TRF: transl_funbody cenv sz fn = OK tfn)
      (TR: transl_stmt cenv xenv s = OK ts)
      (*(MINJ: Mem.inject (as_inj mu) m tm)*)
      (MCS: structured_match_callstack mu m tm
               (Frame cenv tfn e le te sp lo hi :: cs)
               (Mem.nextblock m) (Mem.nextblock tm))
      (MK: match_cont k tk  cenv xenv cs)
      (*(PG: meminj_preserves_globals ge (as_inj mu))*),
      structured_match_cores d mu (CSharpMin_State fn s k e le) m
                   (CMin_State tfn ts tk (Vptr sp Int.zero) te) tm
  | SMC_state_seq:
      forall d fn s1 s2 k e le m tfn ts1 tk sp te tm cenv xenv mu lo hi cs sz
      (TRF: transl_funbody cenv sz fn = OK tfn)
      (TR: transl_stmt cenv xenv s1 = OK ts1)
      (*(MINJ: Mem.inject (as_inj mu) m tm)*)
      (MCS: structured_match_callstack mu m tm
               (Frame cenv tfn e le te sp lo hi :: cs)
               (Mem.nextblock m) (Mem.nextblock tm))
      (MK: match_cont (Csharpminor.Kseq s2 k) tk cenv xenv cs)
      (*(PG: meminj_preserves_globals ge (as_inj mu))*),
      structured_match_cores d mu (CSharpMin_State fn (Csharpminor.Sseq s1 s2) k e le) m
                   (CMin_State tfn ts1 tk (Vptr sp Int.zero) te) tm
  | SMC_callstate:
      forall d fd args k m tfd targs tk tm mu cs cenv
      (TR: transl_fundef fd = OK tfd)
      (*(MINJ: Mem.inject (as_inj mu) m tm)*)
      (MCS: structured_match_callstack mu m tm cs (Mem.nextblock m) (Mem.nextblock tm))
      (MK: match_cont k tk cenv nil cs)
      (ISCC: Csharpminor.is_call_cont k)
      (ARGSINJ: val_list_inject (restrict (as_inj mu) (vis mu)) args targs)
      (*(PG: meminj_preserves_globals ge (as_inj mu))*),

      structured_match_cores d mu (CSharpMin_Callstate fd args k) m
                   (CMin_Callstate tfd targs tk) tm
  | SMC_returnstate:
      forall d v k m tv tk tm mu cs cenv
      (*(MINJ: Mem.inject (as_inj mu) m tm)*)
      (MCS: structured_match_callstack mu m tm cs (Mem.nextblock m) (Mem.nextblock tm))
      (MK: match_cont k tk cenv nil cs)
      (RESINJ: val_inject (restrict (as_inj mu) (vis mu)) v tv)
      (*(PG: meminj_preserves_globals ge (as_inj mu))*),
      structured_match_cores d mu (CSharpMin_Returnstate v k) m
                   (CMin_Returnstate tv tk) tm.(*
Definition protected m mu:=
   forall b, REACH m (extBlocksSrc mu) b = true ->
             locBlocksSrc mu b = true ->
             REACH m (frgnBlocksSrc mu) b = true.

Lemma protected_restr: forall m mu X
      (PROT : protected m mu), protected m (restrict_sm mu X).
Proof. intros.
red. rewrite restrict_sm_frgnBlocksSrc, restrict_sm_extBlocksSrc,
             restrict_sm_locBlocksSrc; intros.
  eapply PROT; eassumption.
Qed.
*)
Definition Match_cores d mu c1 m1 c2 m2:Prop :=
  structured_match_cores d mu c1 m1 c2 m2 (*(restrict_sm mu (vis mu)) doesn't work here, since
                              some of the conditions of match_env are "global"*) /\
  REACH_closed m1 (vis mu) /\
  meminj_preserves_globals ge (as_inj mu) /\
  (forall b, isGlobalBlock ge b = true -> frgnBlocksSrc mu b = true) /\
  sm_valid mu m1 m2 /\ SM_wd mu /\
  Mem.inject (as_inj mu) m1 m2(* /\ protected m1 mu*).

Lemma match_callstack_freelist: forall mu cenv tf e le te sp lo hi cs m m' tm (WD: SM_wd mu), Mem.inject (as_inj mu) m tm -> Mem.free_list m (blocks_of_env e) = Some m' -> structured_match_callstack mu m tm (Frame cenv tf e le te sp lo hi :: cs) (Mem.nextblock m) (Mem.nextblock tm) -> exists tm', Mem.free tm sp 0 tf.(fn_stackspace) = Some tm' /\ structured_match_callstack mu m' tm' cs (Mem.nextblock m') (Mem.nextblock tm') /\ Mem.inject (as_inj mu) m' tm'.