Library mcertikos.mm.MShareOp

***********************************************************************
*                                                                     *
*            The CertiKOS Certified Kit Operating System              *
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*                   The FLINT Group, Yale University                  *
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*  Copyright The FLINT Group, Yale University.  All rights reserved.  *
*  This file is distributed under the terms of the Yale University    *
*  Non-Commercial License Agreement.                                  *
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This file defines the abstract data and the primitives for the PIPC layer, which will introduce the primtives of thread
Require Import Coqlib.
Require Import Maps.
Require Import ASTExtra.
Require Import Integers.
Require Import Floats.
Require Import Values.
Require Import Memory.
Require Import Events.
Require Import Stacklayout.
Require Import Globalenvs.
Require Import AsmX.
Require Import Smallstep.
Require Import AuxStateDataType.
Require Import Constant.
Require Import GlobIdent.
Require Import FlatMemory.
Require Import CommonTactic.
Require Import AuxLemma.
Require Import RealParams.
Require Import PrimSemantics.
Require Import LAsm.
Require Import LoadStoreSem2.
Require Import XOmega.

Require Import liblayers.logic.PTreeModules.
Require Import liblayers.logic.LayerLogicImpl.
Require Import liblayers.compat.CompatLayers.
Require Import liblayers.compat.CompatGenSem.

Require Import CalRealPTPool.
Require Import CalRealPT.
Require Import CalRealIDPDE.
Require Import CalRealInitPTE.
Require Import CalRealPTB.
Require Import CalRealSMSPool.

Require Import INVLemmaContainer.
Require Import INVLemmaMemory.

Require Export MShareIntro.
Require Import AbstractDataType.
Require Import DeviceStateDataType.

Abstract Data and Primitives at this layer

Section WITHMEM.

  Local Open Scope Z_scope.

  Context `{real_params: RealParams}.

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

Proofs that the primitives satisfies the invariants at this layer

  Section INV.

    Global Instance shared_mem_to_pending_inv:
      PreservesInvariants shared_mem_to_pending_spec.
    Proof.
      preserves_invariants_simpl low_level_invariant high_level_invariant; eauto 2.
    Qed.

    Global Instance shared_mem_to_dead_inv:
      PreservesInvariants shared_mem_to_dead_spec.
    Proof.
      preserves_invariants_simpl low_level_invariant high_level_invariant; eauto 2.
    Qed.

    Global Instance shared_mem_to_ready_inv:
      PreservesInvariants shared_mem_to_ready_spec.
    Proof.
      preserves_invariants_simpl´; functional inversion H2; subst.
      - eapply ptResv2_low_level_inv; eauto.
      - exploit ptResv2_low_level_inv; eauto.
        intros HP; inv HP. constructor; trivial.
      - eapply ptResv2_high_level_inv; eauto.
      - exploit ptResv2_high_level_inv; eauto.
        intros HP; inv HP. constructor; trivial.
      - eapply ptResv2_kernel_mode; eauto.
      - exploit ptResv2_kernel_mode; eauto.
    Qed.

    Global Instance sharedmem_init_inv: PreservesInvariants sharedmem_init_spec.
    Proof.
      preserves_invariants_simpl low_level_invariant high_level_invariant.
      - apply real_nps_range.
      - apply real_lat_kern_valid.
      - apply real_lat_usr_valid.
      - apply AC_init_container_valid.
      - rewrite init_pperm; try assumption.
        apply Lreal_pperm_valid.
      - eapply real_pt_PMap_valid; eauto.
      - apply real_pt_PMap_kern.
      - omega.
      - assumption.
      - apply real_idpde_init.
      - apply real_pt_consistent_pmap.
      - apply real_pt_consistent_pmap_domain.
      - apply Lreal_at_consistent_lat_domain.
      - apply real_PTB_0_valid.
      - apply real_PTB_valid.
      - eapply real_PTB_AC_valid; eauto.
    Qed.

  End INV.

Specification of primitives that will be implemented at this layer


Layer Definition

  Definition mshareop_fresh : compatlayer (cdata RData) :=
    shared_mem_to_pending ↦ gensem shared_mem_to_pending_spec
                          ⊕ shared_mem_to_dead ↦ gensem shared_mem_to_dead_spec
                          ⊕ shared_mem_to_ready ↦ gensem shared_mem_to_ready_spec
                          ⊕ get_shared_mem_status_seen ↦ gensem get_shared_mem_status_seen_spec
                          ⊕ shared_mem_init ↦ gensem sharedmem_init_spec.

  Definition mshareop_passthrough : compatlayer (cdata RData) :=
    fload ↦ gensem fload_spec
          ⊕ fstore ↦ gensem fstore_spec
          ⊕ flatmem_copy ↦ gensem flatmem_copy_spec
          ⊕ vmxinfo_get ↦ gensem vmxinfo_get_spec
          ⊕ palloc ↦ gensem palloc_spec
          ⊕ pfree ↦ gensem pfree_spec
          ⊕ set_pt ↦ gensem setPT_spec
          ⊕ pt_read ↦ gensem ptRead_spec
          ⊕ pt_resv ↦ gensem ptResv_spec
          ⊕ pt_resv2 ↦ gensem ptResv2_spec
          ⊕ pt_new ↦ gensem pt_new_spec
          
          ⊕ get_shared_mem_state ↦ gensem get_shared_mem_state_spec
          ⊕ get_shared_mem_seen ↦ gensem get_shared_mem_seen_spec
          ⊕ set_shared_mem_seen ↦ gensem set_shared_mem_seen_spec

          ⊕ cli ↦ gensem cli_spec
          ⊕ sti ↦ gensem sti_spec
          ⊕ cons_buf_read ↦ gensem cons_buf_read_spec
          ⊕ serial_putc ↦ gensem serial_putc_spec
          ⊕ serial_intr_disable ↦ gensem serial_intr_disable_spec
          ⊕ serial_intr_enable ↦ gensem serial_intr_enable_spec
          
          ⊕ pt_in ↦ primcall_general_compatsem´ ptin_spec (prim_ident:= pt_in)
          ⊕ pt_out ↦ primcall_general_compatsem´ ptout_spec (prim_ident:= pt_out)
          ⊕ container_get_quota ↦ gensem container_get_quota_spec
          ⊕ container_get_usage ↦ gensem container_get_usage_spec
          ⊕ container_can_consume ↦ gensem container_can_consume_spec
          ⊕ trap_in ↦ primcall_general_compatsem trapin_spec
          ⊕ trap_out ↦ primcall_general_compatsem trapout_spec
          ⊕ host_in ↦ primcall_general_compatsem hostin_spec
          ⊕ host_out ↦ primcall_general_compatsem hostout_spec
          ⊕ trap_get ↦ primcall_trap_info_get_compatsem trap_info_get_spec
          ⊕ trap_set ↦ primcall_trap_info_ret_compatsem trap_info_ret_spec
          ⊕ accessors ↦ {| exec_load := (@exec_loadex _ _ Hmwd);
                           exec_store := (@exec_storeex _ _ Hmwd) |}.

  Definition mshareop : compatlayer (cdata RData) := mshareop_fresh ⊕ mshareop_passthrough.

End WITHMEM.

Section WITHPARAM.

  Context `{real_params: RealParams}.

  Local Open Scope Z_scope.

Implementation of primtives in VMCBOps
  Section Impl.
  End Impl.

End WITHPARAM.