(**************************************************************************)
(*       ___                                                              *)
(*      ||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                  *)
(*                                                                        *)
(**************************************************************************)

include "RTLabs/RTLabs_abstract.ma".
include "RTLabs/RTLabs_semantics.ma".
include "common/Measurable.ma".

definition RTLabs_stack_ident :
  genv →
  ∀s:RTLabs_state.
  match RTLabs_classify s with [ cl_call ⇒ True | _ ⇒ False ] →
  ident ≝
λge,s.
match s return λs. match RTLabs_classify s with [ cl_call ⇒ True | _ ⇒ False ] → ident with
[ Callstate id _ _ _ _ _ ⇒ λ_. id
| _ ⇒ λH.⊥
].
try @H whd in match (RTLabs_classify …) in H; normalize nodelta in H;
cases (next_instruction ?) in H; normalize nodelta //
qed.

definition RTLabs_pcs : preclassified_system ≝
mk_preclassified_system
  RTLabs_fullexec
  (λ_.RTLabs_cost)
  (λ_.RTLabs_classify)
  RTLabs_stack_ident.