Library mcertikos.proc.PThreadIntro

***********************************************************************
*                                                                     *
*            The CertiKOS Certified Kit Operating System              *
*                                                                     *
*                   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 PThreadIntro layer, which will introduce abstraction of kernel context

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 CalRealProcModule.

Require Import INVLemmaMemory.
Require Import INVLemmaThread.

Require Import AbstractDataType.

Require Export PKContextNew.
Require Export ObjQueue.

Abstract Data and Primitives at PThreadIntro layer

Section WITHMEM.

Local Open Scope Z_scope.

Context `{real_params: RealParams}.

**Definition of the raw data at this layer

Specifications of Primitives

  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 set_state_inv: PreservesInvariants set_state_spec.
    Proof.
      preserves_invariants_simpl low_level_invariant high_level_invariant; auto 2.
    Qed.

    Global Instance set_prev_inv: PreservesInvariants set_prev_spec.
    Proof.
      preserves_invariants_simpl low_level_invariant high_level_invariant; auto 2.
    Qed.

    Global Instance set_next_inv: PreservesInvariants set_next_spec.
    Proof.
      preserves_invariants_simpl low_level_invariant high_level_invariant; auto 2.
    Qed.

    Global Instance tcb_init_inv: PreservesInvariants tcb_init_spec.
    Proof.
      preserves_invariants_simpl low_level_invariant high_level_invariant; auto 2.
    Qed.

  End INV.

Layer Definition

  Definition pthreadintro_fresh : compatlayer (cdata RData) :=
    get_state ↦ gensem get_state_spec
              ⊕ get_prev ↦ gensem get_prev_spec
              ⊕ get_next ↦ gensem get_next_spec
              ⊕ set_state ↦ gensem set_state_spec
              ⊕ set_prev ↦ gensem set_prev_spec
              ⊕ set_next ↦ gensem set_next_spec
              ⊕ tcb_init ↦ gensem tcb_init_spec.

  Definition pthreadintro_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

          ⊕ shared_mem_init ↦ gensem sharedmem_init_spec
          ⊕ shared_mem_status ↦ gensem ObjShareMem.shared_mem_status_spec
          ⊕ offer_shared_mem ↦ gensem ObjShareMem.offer_shared_mem_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
          ⊕ kctxt_switch ↦ primcall_kctxt_switch_compatsem kctxt_switch_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
          ⊕ accessors ↦ {| exec_load := (@exec_loadex _ _ Hmwd );
                           exec_store := (@exec_storeex _ _ Hmwd ) |}
          ⊕ kctxt_new ↦ dnew_compatsem ObjThread.kctxt_new_spec.

  Definition pthreadintro : compatlayer (cdata RData) := pthreadintro_fresh ⊕ pthreadintro_passthrough.

End WITHMEM.

Section WITHPARAM.

  Context `{real_params: RealParams}.

  Local Open Scope Z_scope.

  Section Impl.

    Function thread_init_spec (mbi_adr:Z) (abd: RData) : option RData :=
      match sharedmem_init_spec mbi_adr abd with
        | Some adt ⇒
          Some adt {tcb : real_tcb (tcb adt)}
        | _ ⇒ None
      end.

  End Impl.

End WITHPARAM.