CristalCaveGem » LustreC

(********************************************************************)

(*                                                                  *)

(*  The LustreC compiler toolset   /  The LustreC Development Team  *)

(*  Copyright 2012 -    --   ONERA - CNRS - INPT                    *)

(*                                                                  *)

(*  LustreC is free software, distributed WITHOUT ANY WARRANTY      *)

(*  under the terms of the GNU Lesser General Public License        *)

(*  version 2.1.                                                    *)

(*                                                                  *)

(********************************************************************)

open Utils.Format

open Lustre_types

open Corelang

open Machine_code_types

open Machine_code_common

open C_backend_common

(********************************************************************************************)

(*                         Header Printing functions                                        *)

(********************************************************************************************)

module type MODIFIERS_HDR = sig

  val print_machine_decl_prefix: Format.formatter -> machine_t -> unit

end

module EmptyMod = struct

  let print_machine_decl_prefix = fun _ _ -> ()

end

module Main = functor (Mod: MODIFIERS_HDR) -> struct

  let print_import_standard fmt () =

    (* if Machine_types.has_machine_type () then *)

    fprintf fmt

      "#include <stdint.h>@,\

       %a\

       #include \"%s/arrow.h%s\""

      (if !Options.mpfr then

         pp_print_endcut "#include <mpfr.h>"

       else pp_print_nothing) ()

      (Arrow.arrow_top_decl ()).top_decl_owner

      (if !Options.cpp then "pp" else "")

  let rec print_static_val pp_var fmt v =

    match v.value_desc with

    | Cst c ->

      pp_c_const fmt c

    | Var v ->

      pp_var fmt v

    | Fun (n, vl) ->

      pp_basic_lib_fun (Types.is_int_type v.value_type) n

        (print_static_val pp_var) fmt vl

    | _ ->

      (* TODO: raise proper error *)

      eprintf "Internal error: C_backend_header.print_static_val";

      assert false

  let print_constant_decl (m, attr, inst) pp_var fmt v =

    fprintf fmt "%s %a = %a"

      attr

      (pp_c_type (sprintf "%s ## %s" inst v.var_id)) v.var_type

      (print_static_val pp_var) (get_const_assign m v)

  let pp_var inst const_locals fmt v =

    if List.mem v const_locals then

      fprintf fmt "%s ## %s" inst v.var_id

    else fprintf fmt "%s" v.var_id

  let print_static_constant_decl (_, _, inst as macro) fmt const_locals =

    pp_print_list ~pp_open_box:pp_open_vbox0

      ~pp_sep:(pp_print_endcut ";\\")  ~pp_eol:(pp_print_endcut ";\\")

      (print_constant_decl macro (pp_var inst const_locals))

      fmt

      const_locals

  let print_static_declare_instance

      (m, attr, inst) const_locals fmt (i, (n, static)) =

    let values = List.map (value_of_dimension m) static in

    fprintf fmt "%a(%s, %a%s)"

      pp_machine_static_declare_name (node_name n)

      attr

      (pp_print_list ~pp_open_box:pp_open_hbox ~pp_sep:pp_print_comma

         ~pp_eol:pp_print_comma (print_static_val (pp_var inst const_locals)))

      values

      i

  let print_static_declare_macro fmt (m, attr, inst as macro) =

    let const_locals =

      List.filter (fun vdecl -> vdecl.var_dec_const) m.mstep.step_locals in

    let array_mem =

      List.filter (fun v -> Types.is_array_type v.var_type) m.mmemory in

    fprintf fmt

      "@[<v 2>\

       #define %a(%s, %a%s)\\@,\

       %a%s %a %s;\\@,\

       %a%a;\

       @]"

      pp_machine_static_declare_name m.mname.node_id

      attr

      (pp_print_list ~pp_sep:pp_print_comma ~pp_eol:pp_print_comma

         (pp_c_var_read m)) m.mstatic

      inst

      (* constants *)

      (print_static_constant_decl macro) const_locals

      attr

      (pp_machine_memtype_name ~ghost:false) m.mname.node_id

      inst

      (pp_print_list ~pp_open_box:pp_open_vbox0

         ~pp_sep:(pp_print_endcut ";\\") ~pp_eol:(pp_print_endcut ";\\")

         (pp_c_decl_local_var m)) array_mem

      (pp_print_list ~pp_open_box:pp_open_vbox0

         ~pp_sep:(pp_print_endcut ";\\")

         (fun fmt (i', m') ->

            let path = sprintf "%s ## _%s" inst i' in

            fprintf fmt "%a"

              (print_static_declare_instance macro const_locals)

              (path, m'))) m.minstances

  let print_static_link_instance fmt (i, (m, _)) =

    fprintf fmt "%a(%s)" pp_machine_static_link_name (node_name m) i

  (* Allocation of a node struct:

     - if node memory is an array/matrix/etc, we cast it to a pointer (see pp_registers_struct)

  *)

  let print_static_link_macro fmt (m, _, inst) =

    let array_mem = List.filter (fun v -> Types.is_array_type v.var_type)

        m.mmemory in

    fprintf fmt

      "@[<v>@[<v 2>\

       #define %a(%s) do {\\@,\

       %a%a;\\@]@,\

       } while (0)\

       @]"

      pp_machine_static_link_name m.mname.node_id

      inst

      (pp_print_list ~pp_open_box:pp_open_vbox0

         ~pp_sep:(pp_print_endcut ";\\") ~pp_eol:(pp_print_endcut ";\\")

         (fun fmt v ->

            fprintf fmt "%s._reg.%s = (%a*) &%s"

              inst

              v.var_id

              (fun fmt v -> pp_c_type "" fmt (Types.array_base_type v.var_type)) v

              v.var_id)) array_mem

      (pp_print_list ~pp_open_box:pp_open_vbox0

         ~pp_sep:(pp_print_endcut ";\\")

         (fun fmt (i',m') ->

            let path = sprintf "%s ## _%s" inst i' in

            fprintf fmt "%a;\\@,%s.%s = &%s"

              print_static_link_instance (path,m')

              inst

              i'

              path)) m.minstances

  let print_static_alloc_macro fmt (m, attr, inst) =

    fprintf fmt

      "@[<v>@[<v 2>\

       #define %a(%s, %a%s)\\@,\

       %a(%s, %a%s);\\@,\

       %a(%s);\

       @]@]"

      pp_machine_static_alloc_name m.mname.node_id

      attr

      (pp_print_list ~pp_sep:pp_print_comma ~pp_eol:pp_print_comma

         (pp_c_var_read m)) m.mstatic

      inst

      pp_machine_static_declare_name m.mname.node_id

      attr

      (pp_print_list ~pp_sep:pp_print_comma ~pp_eol:pp_print_comma

         (pp_c_var_read m)) m.mstatic

      inst

      pp_machine_static_link_name m.mname.node_id

      inst

  (* TODO: ACSL

     we do multiple things:

     - provide the semantics of the node as a predicate: function step and reset are associated to ACSL predicate

     - the node is associated to a refinement contract, wrt its ACSL sem

     - if the node is a regular node associated to a contract, print the contract as function contract.

     - do not print anything if this is a contract node

  *)

  let print_machine_alloc_decl fmt m =

    Mod.print_machine_decl_prefix fmt m;

    if not (fst (get_stateless_status m)) then

      if !Options.static_mem then

        (* Static allocation *)

        let macro = (m, mk_attribute m, mk_instance m) in

        fprintf fmt "%a@,%a@,%a"

          print_static_declare_macro macro

          print_static_link_macro macro

          print_static_alloc_macro macro

      else

        (* Dynamic allocation *)

        fprintf fmt "extern %a;@,extern %a"

          print_alloc_prototype (m.mname.node_id, m.mstatic)

          print_dealloc_prototype m.mname.node_id

  let print_machine_struct_top_decl_from_header fmt tdecl =

    let inode = imported_node_of_top tdecl in

    if not inode.nodei_stateless then

      (* Declare struct *)

      fprintf fmt "%a;"

        (pp_machine_memtype_name ~ghost:false) inode.nodei_id

  let print_stateless_C_prototype fmt (name, inputs, outputs) =

    let output =

      match outputs with

      | [hd] -> hd

      | _ -> assert false

    in

    fprintf fmt "%a %s %a"

      (pp_basic_c_type ~var_opt:None) output.var_type

      name

      (pp_print_parenthesized pp_c_decl_input_var) inputs

  let print_machine_decl_top_decl_from_header fmt tdecl =

    let inode = imported_node_of_top tdecl in

    (*Mod.print_machine_decl_prefix fmt m;*)

    let prototype = (inode.nodei_id, inode.nodei_inputs, inode.nodei_outputs) in

    if inode.nodei_prototype = Some "C" then

      if inode.nodei_stateless then

        fprintf fmt "extern %a;" print_stateless_C_prototype prototype

      else begin

        (* TODO: raise proper error *)

        Format.eprintf "internal error: print_machine_decl_top_decl_from_header";

        assert false

      end

    else if inode.nodei_stateless then

      fprintf fmt "extern %a;" print_stateless_prototype prototype

    else

      let static_inputs = List.filter (fun v -> v.var_dec_const)

          inode.nodei_inputs in

      let used name =

        List.exists (fun v -> v.var_id = name)

          (inode.nodei_inputs @ inode.nodei_outputs) in

      let self = mk_new_name used "self" in

      let static_prototype = (inode.nodei_id, static_inputs) in

      fprintf fmt

        "extern %a;@,\

         extern %a;@,\

         extern %a;@,\

         extern %a;"

        (print_reset_prototype self) static_prototype

        (print_init_prototype self) static_prototype

        (print_clear_prototype self) static_prototype

        (print_step_prototype self) prototype

  let print_const_top_decl fmt tdecl =

    let cdecl = const_of_top tdecl in

    fprintf fmt "extern %a;"

      (pp_c_type cdecl.const_id)

      (if !Options.mpfr && Types.(is_real_type (array_base_type cdecl.const_type))

       then Types.dynamic_type cdecl.const_type

       else cdecl.const_type)

  let rec pp_c_type_decl filename cpt var fmt tdecl =

    match tdecl with

    | Tydec_any ->

      assert false

    | Tydec_int ->

      fprintf fmt "int %s" var

    | Tydec_real when !Options.mpfr ->

      fprintf fmt "%s %s" Mpfr.mpfr_t var

    | Tydec_real ->

      fprintf fmt "double %s" var

    (* | Tydec_float         -> fprintf fmt "float %s" var *)

    | Tydec_bool ->

      fprintf fmt "_Bool %s" var

    | Tydec_clock ty ->

      pp_c_type_decl filename cpt var fmt ty

    | Tydec_const c ->

      fprintf fmt "%s %s" c var

    | Tydec_array (d, ty) ->

      fprintf fmt "%a[%a]" (pp_c_type_decl filename cpt var) ty pp_c_dimension d

    | Tydec_enum tl ->

      incr cpt;

      fprintf fmt "enum _enum_%s_%d %a %s" (protect_filename filename) !cpt

        (pp_print_braced pp_print_string) tl var

    | Tydec_struct fl ->

      incr cpt;

      fprintf fmt "struct _struct_%s_%d %a %s" (protect_filename filename) !cpt

        (pp_print_braced ~pp_sep:pp_print_semicolon

           (fun fmt (label, tdesc) -> pp_c_type_decl filename cpt label fmt tdesc))

        fl var

  (* let print_type_definitions fmt filename =

   *   let cpt_type = ref 0 in

   *   Hashtbl.iter (fun typ decl ->

   *       match typ with

   *       | Tydec_const var ->

   *         begin match decl.top_decl_desc with

   *           | TypeDef tdef ->

   *             fprintf fmt "typedef %a;@.@."

   *               (pp_c_type_decl filename cpt_type var) tdef.tydef_desc

   *           | _ -> assert false

   *         end

   *       | _ -> ()) type_table *)

  let reset_type_definitions, print_type_definition_top_decl_from_header =

    let cpt_type = ref 0 in

    (fun () -> cpt_type := 0),

    (fun filename fmt tdecl ->

       let typ = typedef_of_top tdecl in

       fprintf fmt "typedef %a;"

         (pp_c_type_decl filename cpt_type typ.tydef_id) typ.tydef_desc)

  (********************************************************************************************)

  (*                         MAIN Header Printing functions                                   *)

  (********************************************************************************************)

  let print_alloc_header header_fmt basename _prog machines dependencies spec =

    (* Include once: start *)

    let baseNAME = file_to_module_name basename in

    fprintf header_fmt

      "@[<v>\

       %a@,\

       #ifndef _%s_alloc@,\

       #define _%s_alloc@,\

       @,\

       /* Import header from %s */@,\

       %a@,\

       @,\

       %a\

       %a\

       %a\

       %a\

       #endif\

       @]"

      (* Print the svn version number and the supported C standard (C90 or C99) *)

      pp_print_version ()

      baseNAME baseNAME

      (* Import the header *)

      basename

      print_import_prototype

      {

        local = true;

        name = basename;

        content = [];

        is_stateful = true  (* assuming it is staful *);

      }

      (* Print dependencies *)

      (pp_print_list

         ~pp_open_box:pp_open_vbox0

         ~pp_prologue:(pp_print_endcut "/* Import dependencies */")

         print_import_alloc_prototype

         ~pp_epilogue:pp_print_cutcut) dependencies

      (* Print the struct definitions of all machines. *)

      (pp_print_list

         ~pp_open_box:pp_open_vbox0

         ~pp_prologue:(pp_print_endcut "/* Struct definitions */")

         ~pp_sep:pp_print_cutcut

         print_machine_struct

         ~pp_epilogue:pp_print_cutcut) machines

      (* Print specification *)

      C_backend_spec.pp_acsl_preamble spec

      (* Print the prototypes of all machines *)

      (pp_print_list

         ~pp_open_box:pp_open_vbox0

         ~pp_prologue:(pp_print_endcut

                         "/* Node allocation function/macro prototypes */")

         ~pp_sep:pp_print_cutcut

         print_machine_alloc_decl

         ~pp_epilogue:pp_print_cutcut) machines

  (* Include once: end *)

  (* Function called when compiling a lusi file and generating the associated C

     header. *)

  let print_header_from_header header_fmt basename header =

    (* Include once: start *)

    let baseNAME = file_to_module_name basename in

    let types = get_typedefs header in

    let consts = get_consts header in

    let nodes = get_imported_nodes header in

    let dependencies = get_dependencies header in

    reset_type_definitions ();

    fprintf header_fmt

      "@[<v>\

       %a@,\

       #ifndef _%s@,\

       #define _%s@,\

       @,\

       /* Import standard library */@,\

       %a@,\

       @,\

       %a\

       %a\

       %a\

       %a\

       %a\

       %a\

       #endif\

       @]@."

      (* Print the version number and the supported C standard (C90 or C99) *)

      pp_print_version ()

      baseNAME baseNAME

      (* imports standard library definitions (arrow) *)

      print_import_standard ()

      (* imports dependencies *)

      (pp_print_list

         ~pp_open_box:pp_open_vbox0

         ~pp_prologue:(pp_print_endcut "/* Import dependencies */")

         (fun fmt dep ->

            let local, name = dependency_of_top dep in

            print_import_prototype fmt

              {

                local;

                name;

                content = [];

                is_stateful = true (* assuming it is stateful *)

              })

         ~pp_epilogue:pp_print_cutcut)

      dependencies

      (* Print the type definitions from the type table *)

      (pp_print_list

         ~pp_open_box:pp_open_vbox0

         ~pp_prologue:(pp_print_endcut "/* Types definitions */")

         (print_type_definition_top_decl_from_header basename)

         ~pp_epilogue:pp_print_cutcut)

      types

      (* Print the global constant declarations. *)

      (pp_print_list

         ~pp_open_box:pp_open_vbox0

         ~pp_prologue:

           (pp_print_endcut

              "/* Global constants (declarations, definitions are in C file) */")

         print_const_top_decl

         ~pp_epilogue:pp_print_cutcut)

      consts

      (* MPFR *)

      (if !Options.mpfr then

         fun fmt () -> fprintf fmt

             "/* Global initialization declaration */@,\

              extern %a;@,@,\

              /* Global clear declaration */@,\

              extern %a;@,@,"

             print_global_init_prototype baseNAME

             print_global_clear_prototype baseNAME

       else pp_print_nothing) ()

      (* Print the struct declarations of all machines. *)

      (pp_print_list

         ~pp_open_box:pp_open_vbox0

         ~pp_prologue:(pp_print_endcut "/* Struct declarations */")

         print_machine_struct_top_decl_from_header

         ~pp_epilogue:pp_print_cutcut)

      nodes

      (* Print the prototypes of all machines *)

      (pp_print_list

         ~pp_open_box:pp_open_vbox0

         ~pp_prologue:(pp_print_endcut "/* Nodes declarations */")

         ~pp_sep:pp_print_cutcut

         print_machine_decl_top_decl_from_header

         ~pp_epilogue:pp_print_cutcut)

      nodes

end

(* Local Variables: *)

(* compile-command:"make -C ../../.." *)

(* End: *)