MemBlockRefine

Require Import Coqlib.
Require Import Errors.
Require Import AST.
Require Import Integers.
Require Import Floats.
Require Import Op.
Require Import Events.
Require Import Globalenvs.
Require Import Smallstep.
Require Import Values.
Require Import Memory.
Require Import Maps.
Require Import ZSet.
Require Import ListLemma2.
Require Import CommonTactic.
Require Import AuxLemma.
Require Import AuxStateDataType.
Require Import RealParams.
Require Import RefinementTactic.
Require Import PrimSemantics.
Require Import LayerCalculusLemma.
Require Import TacticsForTesting.
Require Import liblayers.logic.PTreeModules.
Require Import liblayers.logic.LayerLogicImpl.
Require Import liblayers.compcertx.Stencil.
Require Import liblayers.compcertx.MakeProgram.
Require Import liblayers.compat.CompatLayers.
Require Import liblayers.compat.CompatGenSem.

Require Import RData.
Require Import Constants.
Require Import MemBlock.Layer.
Require Import HypsecCommLib.
Require Import MmioSPTOps.Layer.
Require Import MemBlock.Spec.

Local Open Scope Z_scope.
Local Opaque Z.add Z.mul Z.div Z.shiftl Z.shiftr Z.land Z.lor.

Section MemBlockProofHigh.

  Local Open Scope string_scope.
  Local Open Scope Z_scope.

  Context `{real_params: RealParams}.

  Notation HDATA := RData.
  Notation LDATA := RData.

  Notation HDATAOps := (cdata (cdata_ops := MemBlock_ops) HDATA).
  Notation LDATAOps := (cdata (cdata_ops := MmioSPTOps_ops) HDATA).

  Section WITHMEM.

    Context `{Hstencil: Stencil}.
    Context `{Hmem: Mem.MemoryModelX}.
    Context `{Hmwd: UseMemWithData mem}.

    Record relate_RData (f:meminj) (hadt: HDATA) (ladt: LDATA) :=
      mkrelate_RData {
          id_rel: hadt = ladt
        }.

    Inductive match_RData: stencil -> HDATA -> mem -> meminj -> Prop :=
    | MATCH_RDATA: forall habd m f s, match_RData s habd m f.

    Local Hint Resolve MATCH_RDATA.

    Global Instance rel_ops: CompatRelOps HDATAOps LDATAOps :=
      {
        relate_AbData s f d1 d2 := relate_RData f d1 d2;
        match_AbData s d1 m f := match_RData s d1 m f;
        new_glbl := nil
      }.

    Global Instance rel_prf: CompatRel HDATAOps LDATAOps.
    Proof.
      constructor; intros; simpl; trivial.
      constructor; inv H; trivial.
    Qed.

    Section FreshPrim.

      Lemma mem_region_search_spec_exists:
        forall habd labd addr res f
               (Hspec: mem_region_search_spec addr habd = Some res)
               (Hrel: relate_RData f habd labd),
          mem_region_search_spec addr labd = Some res.
        Proof.
          intros until f.
          solve_refine_proof mem_region_search0; repeat hstep; try htrivial.
        Qed.

      Lemma mem_region_search_spec_ref:
        compatsim (crel RData RData) (gensem mem_region_search_spec) mem_region_search_spec_low.
      Proof.
        Opaque mem_region_search_spec.
        compatsim_simpl (@match_RData).
        exploit mem_region_search_spec_exists; eauto 1;
        refine_split; repeat (try econstructor; eauto).
      Qed.

    End FreshPrim.

    Section PassthroughPrim.

      Lemma passthrough_correct:
        sim (crel HDATA LDATA) MemBlock_passthrough MmioSPTOps.
      Proof.
        sim_oplus; layer_sim_simpl; compatsim_simpl (@match_AbData);
          match_external_states_simpl; destruct match_related; srewrite; try reflexivity.
        - unfold host_dabt_is_write_spec; srewrite; reflexivity.
        - unfold host_get_fault_ipa_spec; srewrite; reflexivity.
        - unfold set_vm_remap_addr_spec; srewrite; reflexivity.
        - unfold host_dabt_get_rd_spec; srewrite; reflexivity.
        - unfold clear_phys_page_spec; srewrite; reflexivity.
        - unfold get_mem_region_cnt_spec; srewrite; reflexivity.
        - unfold get_exception_vector_spec; srewrite; reflexivity.
        - unfold read_hpfar_el2_spec; srewrite; reflexivity.
        - unfold read_actlr_el1_spec; srewrite; reflexivity.
        - unfold host_dabt_get_as_spec; srewrite; reflexivity.
        - unfold read_esr_el2_spec; srewrite; reflexivity.
        - unfold set_vm_kvm_spec; srewrite; reflexivity.
        - unfold set_vm_mapped_pages_spec; srewrite; reflexivity.
        - unfold readl_relaxed_spec; srewrite; reflexivity.
        - unfold set_shadow_dirty_bit_spec; srewrite; reflexivity.
        - unfold set_vm_load_size_spec; srewrite; reflexivity.
        - unfold host_skip_instr_spec; srewrite; reflexivity.
        - unfold set_vm_load_addr_spec; srewrite; reflexivity.
        - unfold set_vm_vcpu_spec; srewrite; reflexivity.
        - unfold readq_relaxed_spec; srewrite; reflexivity.
      Qed.

    End PassthroughPrim.

  End WITHMEM.

End MemBlockProofHigh.