Require Import Coqlib.
Require Import Errors.
Require Import AST.
Require Import Integers.
Require Import Floats.
Require Import Op.
Require Import Asm.
Require Import Events.
Require Import Globalenvs.
Require Import Smallstep.
Require Import Values.
Require Import Memory.
Require Import Maps.
Require Import AuxLemma.
Require Import FlatMemory.
Require Import AuxStateDataType.
Require Import Constant.
Require Import GlobIdent.
Require Import RealParams.
Require Import AsmImplLemma.
Require Import GenSem.
Require Import PrimSemantics.

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 compcert.cfrontend.Ctypes.
Require Import Conventions.
Require Import AbstractDataType.
Require Import PCVOp.

Local Open Scope string_scope.
Local Open Scope error_monad_scope.
Local Open Scope Z_scope.

Section SPECIFICATION.

  Context `{real_params: RealParams}.
  Context `{multi_oracle_prop: MultiOracleProp}.

  Notation LDATA := RData.

  Notation LDATAOps := (cdata LDATA).


  Inductive thread_spawn_spec_low_step `{StencilOps} `{Mem.MemoryModelOps} `{UseMemWithData mem}:
    sextcall_sem (mem := mwd LDATAOps):=
  | thread_spawn_spec_low_intro s (WB: _ → Prop) m´0 labd labd´ n b´ b0 ofs´ id q:
      thread_spawn_spec labd b0 b´ ofs´ (Int.unsigned id) (Int.unsigned q) = Some (labd´, Int.unsigned n) →
      find_symbol s STACK_LOC = Some b0 →
      (∃ fun_id, find_symbol s fun_id = Some b´) →
      kernel_mode labd →
      high_level_invariant labd →
      thread_spawn_spec_low_step s WB (Vptr b´ ofs´ :: Vint id :: Vint q :: nil) (m´0, labd) (Vint n) (m´0, labd´).

  Inductive thread_wakeup_spec_low_step `{StencilOps} `{Mem.MemoryModelOps} `{UseMemWithData mem}:
    sextcall_sem (mem := mwd LDATAOps):=
  | thread_wakeup_spec_low_intro s (WB: _ → Prop) m´0 labd labd´ n r:
      thread_wakeup_spec (Int.unsigned n) labd = Some (labd´, Int.unsigned r) →
      kernel_mode labd →
      high_level_invariant labd →
      thread_wakeup_spec_low_step s WB (Vint n :: nil) (m´0, labd) (Vint r) (m´0, labd´).

  Inductive thread_poll_pending_spec_low_step `{StencilOps} `{Mem.MemoryModelOps} `{UseMemWithData mem}:
    sextcall_sem (mem := mwd LDATAOps):=
  | thread_poll_pending_spec_low_intro s (WB: _ → Prop) m´0 labd labd´:
      thread_poll_pending_spec labd = Some labd´ →
      kernel_mode labd →
      high_level_invariant labd →
      thread_poll_pending_spec_low_step s WB nil (m´0, labd) Vundef (m´0, labd´).

  Inductive sched_init_spec_low_step `{StencilOps} `{Mem.MemoryModelOps} `{UseMemWithData mem}:
    sextcall_sem (mem := mwd LDATAOps):=
  | sched_init_spec_low_intro s (WB: _ → Prop) m´0 labd labd´ mbi_adr:
      sched_init_spec (Int.unsigned mbi_adr) labd = Some labd´ →
      kernel_mode labd →
      high_level_invariant labd →
      sched_init_spec_low_step s WB (Vint mbi_adr :: nil) (m´0, labd) Vundef (m´0, labd´).

  Inductive thread_sched_spec_low_step `{StencilOps} `{Mem.MemoryModelOps} `{UseMemWithData mem}:
    sprimcall_sem (mem := mwd LDATAOps):=
  | thread_sched_spec_low_intro s m0 labd labd´ rs r b:
      find_symbol s thread_sched = Some b →
      rs PC = Vptr b Int.zero →
      thread_sched_spec labd
                        ((Pregmap.init Vundef) # ESP <- (rs ESP) # EDI <- (rs EDI)
                                               # ESI <- (rs ESI) # EBX <- (rs EBX) # EBP <-
                                               (rs EBP) # RA <- (rs RA)) = Some (labd´, r) →
      asm_invariant (mem := mwd LDATAOps) s rs (m0, labd) →
      high_level_invariant labd →
      low_level_invariant (Mem.nextblock m0) labd →
      let rs´ := (undef_regs (CR ZF :: CR CF :: CR PF :: CR SF :: CR OF
                                 :: IR EDX :: IR ECX :: IR EAX :: RA :: nil)
                             (undef_regs (List.map preg_of destroyed_at_call) rs)) in
      thread_sched_spec_low_step s rs (m0, labd)
                                 (rs´#ESP<- (r#ESP)#EDI <- (r#EDI)#ESI <- (r#ESI)#EBX <- (r#EBX)
                                     #EBP <- (r#EBP)#PC <- (r#RA)) (m0, labd´).

  Section WITHMEM.

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


    Definition thread_spawn_spec_low: compatsem LDATAOps :=
      csem thread_spawn_spec_low_step (type_of_list_type (Tpointer Tvoid noattr::Tint32::Tint32::nil)) Tint32.

    Definition thread_wakeup_spec_low: compatsem LDATAOps :=
      csem thread_wakeup_spec_low_step (type_of_list_type (Tint32::nil)) Tint32.

    Definition thread_poll_pending_spec_low: compatsem LDATAOps :=
      csem thread_poll_pending_spec_low_step (type_of_list_type nil) Tvoid.

    Definition sched_init_spec_low: compatsem LDATAOps :=
      csem sched_init_spec_low_step (type_of_list_type (Tint32::nil)) Tvoid.

    Definition thread_sched_spec_low: compatsem LDATAOps :=
      asmsem thread_sched thread_sched_spec_low_step.

  End WITHMEM.

End SPECIFICATION.