(**************************************************************************)
(*       ___                                                              *)
(*      ||M||                                                             *)
(*      ||A||       A project by Andrea Asperti                           *)
(*      ||T||                                                             *)
(*      ||I||       Developers:                                           *)
(*      ||T||         The HELM team.                                      *)
(*      ||A||         http://helm.cs.unibo.it                             *)
(*      \   /                                                             *)
(*       \ /        This file is distributed under the terms of the       *)
(*        v         GNU General Public License Version 2                  *)
(*                                                                        *)
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include "Clight/Clight_abstract.ma".
include "Clight/Cexec.ma".
include "common/Measurable.ma".

definition Clight_stack_ident :
  cl_genv →
  ∀s:Clight_state.
  match Clight_classify s with [ cl_call ⇒ True | _ ⇒ False ] →
  ident ≝
λge,s.
match s return λs. match Clight_classify s with [ cl_call ⇒ True | _ ⇒ False ] → ident with
[ Callstate id _ _ _ _ ⇒ λ_. id
| _ ⇒ λH.⊥
].
@H
qed.

definition Clight_pcs : preclassified_system ≝
mk_preclassified_system
  clight_fullexec
  (λ_.Clight_labelled)
  (λ_.Clight_classify)
  Clight_stack_ident.