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lustrec / src / backends / C / c_backend_src.ml @ e8f55c25

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(********************************************************************)
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(*                                                                  *)
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(*  The LustreC compiler toolset   /  The LustreC Development Team  *)
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(*  Copyright 2012 -    --   ONERA - CNRS - INPT                    *)
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(*                                                                  *)
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(*  LustreC is free software, distributed WITHOUT ANY WARRANTY      *)
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(*  under the terms of the GNU Lesser General Public License        *)
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(*  version 2.1.                                                    *)
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(*                                                                  *)
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(********************************************************************)
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open Format
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open Lustre_types
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open Machine_code_types
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open Corelang
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open Machine_code_common
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open C_backend_common
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module type MODIFIERS_SRC =
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sig
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end
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module EmptyMod =
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struct
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end
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module Main = functor (Mod: MODIFIERS_SRC) -> 
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struct
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(********************************************************************************************)
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(*                    Instruction Printing functions                                        *)
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(********************************************************************************************)
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(* Computes the depth to which multi-dimension array assignments should be expanded.
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   It equals the maximum number of nested static array constructions accessible from root [v].
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*)
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  let rec expansion_depth v =
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    match v.value_desc with
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    | Cst cst -> expansion_depth_cst cst
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    | Var _ -> 0
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    | Fun (_, vl) -> List.fold_right (fun v -> max (expansion_depth v)) vl 0
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    | Array vl    -> 1 + List.fold_right (fun v -> max (expansion_depth v)) vl 0
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    | Access (v, i) -> max 0 (expansion_depth v - 1)
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    | Power (v, n)  -> 0 (*1 + expansion_depth v*)
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  and expansion_depth_cst c = 
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    match c with
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      Const_array cl -> 1 + List.fold_right (fun c -> max (expansion_depth_cst c)) cl 0
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    | _ -> 0
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  let rec merge_static_loop_profiles lp1 lp2 =
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    match lp1, lp2 with
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    | []      , _        -> lp2
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    | _       , []       -> lp1
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    | p1 :: q1, p2 :: q2 -> (p1 || p2) :: merge_static_loop_profiles q1 q2
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(* Returns a list of bool values, indicating whether the indices must be static or not *)
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  let rec static_loop_profile v =
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    match v.value_desc with
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    | Cst cst  -> static_loop_profile_cst cst
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    | Var _  -> []
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    | Fun (_, vl) -> List.fold_right (fun v lp -> merge_static_loop_profiles lp (static_loop_profile v)) vl []
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    | Array vl    -> true :: List.fold_right (fun v lp -> merge_static_loop_profiles lp (static_loop_profile v)) vl []
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    | Access (v, i) -> (match (static_loop_profile v) with [] -> [] | _ :: q -> q)
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    | Power (v, n)  -> false :: static_loop_profile v
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  and static_loop_profile_cst cst =
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    match cst with
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      Const_array cl -> List.fold_right 
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	(fun c lp -> merge_static_loop_profiles lp (static_loop_profile_cst c))
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	cl 
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	[]
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    | _ -> [] 
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let rec is_const_index v =
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  match v.value_desc with
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  | Cst (Const_int _) -> true
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  | Fun (_, vl)       -> List.for_all is_const_index vl
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  | _                 -> false
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type loop_index = LVar of ident | LInt of int ref | LAcc of value_t
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(*
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let rec value_offsets v offsets =
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 match v, offsets with
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 | _                        , []          -> v
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 | Power (v, n)             , _ :: q      -> value_offsets v q
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 | Array vl                 , LInt r :: q -> value_offsets (List.nth vl !r) q
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 | Cst (Const_array cl)     , LInt r :: q -> value_offsets (Cst (List.nth cl !r)) q
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 | Fun (f, vl)              , _           -> Fun (f, List.map (fun v -> value_offsets v offsets) vl)
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 | _                        , LInt r :: q -> value_offsets (Access (v, Cst (Const_int !r))) q
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 | _                        , LVar i :: q -> value_offsets (Access (v, Var i)) q
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*)
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(* Computes the list of nested loop variables together with their dimension bounds.
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   - LInt r stands for loop expansion (no loop variable, but int loop index)
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   - LVar v stands for loop variable v
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*)
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let rec mk_loop_variables m ty depth =
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 match (Types.repr ty).Types.tdesc, depth with
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 | Types.Tarray (d, ty'), 0       ->
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   let v = mk_loop_var m () in
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   (d, LVar v) :: mk_loop_variables m ty' 0
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 | Types.Tarray (d, ty'), _       ->
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   let r = ref (-1) in
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   (d, LInt r) :: mk_loop_variables m ty' (depth - 1)
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 | _                    , 0       -> []
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 | _                              -> assert false
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let reorder_loop_variables loop_vars =
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  let (int_loops, var_loops) = 
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    List.partition (function (d, LInt _) -> true | _ -> false) loop_vars 
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  in
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  var_loops @ int_loops
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(* Prints a one loop variable suffix for arrays *)
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let pp_loop_var m fmt lv =
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 match snd lv with
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 | LVar v -> fprintf fmt "[%s]" v
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 | LInt r -> fprintf fmt "[%d]" !r
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 | LAcc i -> fprintf fmt "[%a]" (pp_val m) i
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(* Prints a suffix of loop variables for arrays *)
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let pp_suffix m fmt loop_vars =
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 Utils.fprintf_list ~sep:"" (pp_loop_var m) fmt loop_vars
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(* Prints a value expression [v], with internal function calls only.
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   [pp_var] is a printer for variables (typically [pp_c_var_read]),
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   but an offset suffix may be added for array variables
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*)
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(* Prints a constant value before a suffix (needs casting) *)
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let rec pp_c_const_suffix var_type fmt c =
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  match c with
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    | Const_int i          -> pp_print_int fmt i
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    | Const_real r         -> Real.pp fmt r
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    | Const_tag t          -> pp_c_tag fmt t
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    | Const_array ca       -> let var_type = Types.array_element_type var_type in
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                              fprintf fmt "(%a[]){%a }" (pp_c_type "") var_type (Utils.fprintf_list ~sep:", " (pp_c_const_suffix var_type)) ca
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    | Const_struct fl       -> fprintf fmt "{%a }" (Utils.fprintf_list ~sep:", " (fun fmt (f, c) -> (pp_c_const_suffix (Types.struct_field_type var_type f)) fmt c)) fl
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    | Const_string _
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      | Const_modeid _ -> assert false (* string occurs in annotations not in C *)
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(* Prints a [value] of type [var_type] indexed by the suffix list [loop_vars] *)
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let rec pp_value_suffix m self var_type loop_vars pp_value fmt value =
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  (*Format.eprintf "pp_value_suffix: %a %a %a@." Types.print_ty var_type Machine_code.pp_val value pp_suffix loop_vars;*)
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  let pp_suffix = pp_suffix m in
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  (
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    match loop_vars, value.value_desc with
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    | (x, LAcc i) :: q, _ when is_const_index i ->
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       let r = ref (Dimension.size_const_dimension (dimension_of_value i)) in
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       pp_value_suffix m self var_type ((x, LInt r)::q) pp_value fmt value
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    | (_, LInt r) :: q, Cst (Const_array cl) ->
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       let var_type = Types.array_element_type var_type in
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       pp_value_suffix m self var_type q pp_value fmt (mk_val (Cst (List.nth cl !r)) Type_predef.type_int)
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    | (_, LInt r) :: q, Array vl      ->
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       let var_type = Types.array_element_type var_type in
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       pp_value_suffix m self var_type q pp_value fmt (List.nth vl !r)
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    | loop_var    :: q, Array vl      ->
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       let var_type = Types.array_element_type var_type in
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       Format.fprintf fmt "(%a[]){%a }%a" (pp_c_type "") var_type (Utils.fprintf_list ~sep:", " (pp_value_suffix m self var_type q pp_value)) vl pp_suffix [loop_var]
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    | []              , Array vl      ->
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       let var_type = Types.array_element_type var_type in
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       Format.fprintf fmt "(%a[]){%a }" (pp_c_type "") var_type (Utils.fprintf_list ~sep:", " (pp_value_suffix m self var_type [] pp_value)) vl
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    | _           :: q, Power (v, n)  ->
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       pp_value_suffix m self var_type q pp_value fmt v
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    | _               , Fun (n, vl)   ->
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       pp_basic_lib_fun (Types.is_int_type value.value_type) n (pp_value_suffix m self var_type loop_vars pp_value) fmt vl
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    | _               , Access (v, i) ->
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       let var_type = Type_predef.type_array (Dimension.mkdim_var ()) var_type in
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       pp_value_suffix m self var_type ((Dimension.mkdim_var (), LAcc i) :: loop_vars) pp_value fmt v
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    | _               , Var v    ->
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       if is_memory m v then (
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         (* array memory vars are represented by an indirection to a local var with the right type,
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	    in order to avoid casting everywhere. *)
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         if Types.is_array_type v.var_type
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         then Format.fprintf fmt "%a%a" pp_value v pp_suffix loop_vars
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         else Format.fprintf fmt "%s->_reg.%a%a" self pp_value v pp_suffix loop_vars
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       )
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       else (
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         Format.fprintf fmt "%a%a" pp_value v pp_suffix loop_vars
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       )
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    | _               , Cst cst       -> pp_c_const_suffix var_type fmt cst
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    | _               , _             -> (Format.eprintf "internal error: C_backend_src.pp_value_suffix %a %a %a@." Types.print_ty var_type (pp_val m) value pp_suffix loop_vars; assert false)
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  )
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(* Subsumes C_backend_common.pp_c_val to cope with aggressive substitution
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   which may yield constant arrays in expressions.
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   Type is needed to correctly print constant arrays.
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 *)
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let pp_c_val m self pp_var fmt v =
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  pp_value_suffix m self v.value_type [] pp_var fmt v
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let pp_basic_assign pp_var fmt typ var_name value =
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  if Types.is_real_type typ && !Options.mpfr
194
  then
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    Mpfr.pp_inject_assign pp_var fmt var_name value
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  else
197
    fprintf fmt "%a = %a;" 
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      pp_var var_name
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      pp_var value
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(* type_directed assignment: array vs. statically sized type
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   - [var_type]: type of variable to be assigned
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   - [var_name]: name of variable to be assigned
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   - [value]: assigned value
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   - [pp_var]: printer for variables
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*)
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let pp_assign m self pp_var fmt var_type var_name value =
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  let depth = expansion_depth value in
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  (*Format.eprintf "pp_assign %a %a %a %d@." Types.print_ty var_type pp_val var_name pp_val value depth;*)
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  let loop_vars = mk_loop_variables m var_type depth in
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  let reordered_loop_vars = reorder_loop_variables loop_vars in
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  let rec aux typ fmt vars =
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    match vars with
214
    | [] ->
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       pp_basic_assign (pp_value_suffix m self var_type loop_vars pp_var) fmt typ var_name value
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    | (d, LVar i) :: q ->
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       let typ' = Types.array_element_type typ in
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      (*eprintf "pp_aux %a %s@." Dimension.pp_dimension d i;*)
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      fprintf fmt "@[<v 2>{@,int %s;@,for(%s=0;%s<%a;%s++)@,%a @]@,}"
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	i i i pp_c_dimension d i
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	(aux typ') q
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    | (d, LInt r) :: q ->
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       (*eprintf "pp_aux %a %d@." Dimension.pp_dimension d (!r);*)
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       let typ' = Types.array_element_type typ in
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       let szl = Utils.enumerate (Dimension.size_const_dimension d) in
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       fprintf fmt "@[<v 2>{@,%a@]@,}"
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	       (Utils.fprintf_list ~sep:"@," (fun fmt i -> r := i; aux typ' fmt q)) szl
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    | _ -> assert false
229
  in
230
  begin
231
    reset_loop_counter ();
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    (*reset_addr_counter ();*)
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    aux var_type fmt reordered_loop_vars;
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    (*Format.eprintf "end pp_assign@.";*)
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  end
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let pp_machine_reset (m: machine_t) self fmt inst =
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  let (node, static) =
239
    try
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      List.assoc inst m.minstances
241
    with Not_found -> (Format.eprintf "internal error: pp_machine_reset %s %s %s:@." m.mname.node_id self inst; raise Not_found) in
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  fprintf fmt "%a(%a%t%s->%s);"
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    pp_machine_reset_name (node_name node)
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    (Utils.fprintf_list ~sep:", " Dimension.pp_dimension) static
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    (Utils.pp_final_char_if_non_empty ", " static)
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    self inst
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let pp_machine_init (m: machine_t) self fmt inst =
249
  let (node, static) =
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    try
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      List.assoc inst m.minstances
252
    with Not_found -> (Format.eprintf "internal error: pp_machine_init %s %s %s@." m.mname.node_id self inst; raise Not_found) in
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  fprintf fmt "%a(%a%t%s->%s);"
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    pp_machine_init_name (node_name node)
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    (Utils.fprintf_list ~sep:", " Dimension.pp_dimension) static
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    (Utils.pp_final_char_if_non_empty ", " static)
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    self inst
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259
let pp_machine_clear (m: machine_t) self fmt inst =
260
  let (node, static) =
261
    try
262
      List.assoc inst m.minstances
263
    with Not_found -> (Format.eprintf "internal error: pp_machine_clear %s %s %s@." m.mname.node_id self inst; raise Not_found) in
264
  fprintf fmt "%a(%a%t%s->%s);"
265
    pp_machine_clear_name (node_name node)
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    (Utils.fprintf_list ~sep:", " Dimension.pp_dimension) static
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    (Utils.pp_final_char_if_non_empty ", " static)
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    self inst
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270
let has_c_prototype funname dependencies =
271
  let imported_node_opt = (* We select the last imported node with the name funname.
272
			       The order of evaluation of dependencies should be
273
			       compatible with overloading. (Not checked yet) *) 
274
    List.fold_left
275
      (fun res dep -> 
276
	match res with
277
	| Some _ -> res
278
	| None ->
279
           let decls = dep.content in
280
	   let matched = fun t -> match t.top_decl_desc with 
281
	                          | ImportedNode nd -> nd.nodei_id = funname 
282
	                          | _ -> false
283
	   in
284
	   if List.exists matched decls then (
285
	     match (List.find matched decls).top_decl_desc with
286
	     | ImportedNode nd -> Some nd
287
	     | _ -> assert false
288
	   )
289
	   else
290
	     None
291
      ) None dependencies in
292
  match imported_node_opt with
293
  | None -> false
294
  | Some nd -> (match nd.nodei_prototype with Some "C" -> true | _ -> false)
295
(*
296
let pp_instance_call dependencies m self fmt i (inputs: value_t list) (outputs: var_decl list) =
297
  try (* stateful node instance *)
298
    let (n,_) = List.assoc i m.minstances in
299
    let (input_types, _) = Typing.get_type_of_call n in
300
    let inputs = List.combine input_types inputs in
301
    fprintf fmt "%a (%a%t%a%t%s->%s);"
302
      pp_machine_step_name (node_name n)
303
      (Utils.fprintf_list ~sep:", " (pp_c_val self (pp_c_var_read m))) inputs
304
      (Utils.pp_final_char_if_non_empty ", " inputs) 
305
      (Utils.fprintf_list ~sep:", " (pp_c_var_write m)) outputs
306
      (Utils.pp_final_char_if_non_empty ", " outputs)
307
      self
308
      i
309
  with Not_found -> (* stateless node instance *)
310
    let (n,_) = List.assoc i m.mcalls in
311
    let (input_types, output_types) = Typing.get_type_of_call n in
312
    let inputs = List.combine input_types inputs in
313
    if has_c_prototype i dependencies
314
    then (* external C function *)
315
      let outputs = List.map2 (fun t v -> t, Var v) output_types outputs in
316
      fprintf fmt "%a = %s(%a);"
317
	(Utils.fprintf_list ~sep:", " (pp_c_val self (pp_c_var_read m))) outputs
318
	i
319
	(Utils.fprintf_list ~sep:", " (pp_c_val self (pp_c_var_read m))) inputs
320
    else
321
      fprintf fmt "%a (%a%t%a);"
322
	pp_machine_step_name (node_name n)
323
	(Utils.fprintf_list ~sep:", " (pp_c_val self (pp_c_var_read m))) inputs
324
	(Utils.pp_final_char_if_non_empty ", " inputs) 
325
	(Utils.fprintf_list ~sep:", " (pp_c_var_write m)) outputs 
326
*)
327
let rec pp_conditional dependencies (m: machine_t) self fmt c tl el =
328
  fprintf fmt "@[<v 2>if (%a) {%t%a@]@,@[<v 2>} else {%t%a@]@,}"
329
    (pp_c_val m self (pp_c_var_read m)) c
330
    (Utils.pp_newline_if_non_empty tl)
331
    (Utils.fprintf_list ~sep:"@," (pp_machine_instr dependencies m self)) tl
332
    (Utils.pp_newline_if_non_empty el)
333
    (Utils.fprintf_list ~sep:"@," (pp_machine_instr dependencies m self)) el
334

    
335
and pp_machine_instr dependencies (m: machine_t) self fmt instr =
336
  match get_instr_desc instr with 
337
  | MNoReset _ -> ()
338
  | MReset i ->
339
    pp_machine_reset m self fmt i
340
  | MLocalAssign (i,v) ->
341
    pp_assign
342
      m self (pp_c_var_read m) fmt
343
      i.var_type (mk_val (Var i) i.var_type) v
344
  | MStateAssign (i,v) ->
345
    pp_assign
346
      m self (pp_c_var_read m) fmt
347
      i.var_type (mk_val (Var i) i.var_type) v
348
  | MStep ([i0], i, vl) when Basic_library.is_value_internal_fun (mk_val (Fun (i, vl)) i0.var_type)  ->
349
    pp_machine_instr dependencies m self fmt 
350
      (update_instr_desc instr (MLocalAssign (i0, mk_val (Fun (i, vl)) i0.var_type)))
351
  | MStep (il, i, vl) when !Options.mpfr && Mpfr.is_homomorphic_fun i ->
352
     pp_instance_call m self fmt i vl il
353
  | MStep ([i0], i, vl) when has_c_prototype i dependencies -> 
354
    fprintf fmt "%a = %s(%a);" 
355
      (pp_c_val m self (pp_c_var_read m)) (mk_val (Var i0) i0.var_type)
356
      i
357
      (Utils.fprintf_list ~sep:", " (pp_c_val m self (pp_c_var_read m))) vl
358
  | MStep (il, i, vl) ->
359
    pp_basic_instance_call m self fmt i vl il
360
  | MBranch (_, []) -> (Format.eprintf "internal error: C_backend_src.pp_machine_instr %a@." (pp_instr m) instr; assert false)
361
  | MBranch (g, hl) ->
362
    if let t = fst (List.hd hl) in t = tag_true || t = tag_false
363
    then (* boolean case, needs special treatment in C because truth value is not unique *)
364
	 (* may disappear if we optimize code by replacing last branch test with default *)
365
      let tl = try List.assoc tag_true  hl with Not_found -> [] in
366
      let el = try List.assoc tag_false hl with Not_found -> [] in
367
      pp_conditional dependencies m self fmt g tl el
368
    else (* enum type case *)
369
      (*let g_typ = Typing.type_const Location.dummy_loc (Const_tag (fst (List.hd hl))) in*)
370
      fprintf fmt "@[<v 2>switch(%a) {@,%a@,}@]"
371
	(pp_c_val m self (pp_c_var_read m)) g
372
	(Utils.fprintf_list ~sep:"@," (pp_machine_branch dependencies m self)) hl
373
  | MSpec s -> fprintf fmt "@[/*@@ %s */@]@ " s
374
  | MComment s  -> 
375
      fprintf fmt "/*%s*/@ " s
376

    
377

    
378
and pp_machine_branch dependencies m self fmt (t, h) =
379
  fprintf fmt "@[<v 2>case %a:@,%a@,break;@]"
380
    pp_c_tag t
381
    (Utils.fprintf_list ~sep:"@," (pp_machine_instr dependencies m self)) h
382

    
383

    
384
(********************************************************************************************)
385
(*                         C file Printing functions                                        *)
386
(********************************************************************************************)
387

    
388
let print_const_def fmt cdecl =
389
  if !Options.mpfr && Types.is_real_type (Types.array_base_type cdecl.const_type)
390
  then
391
    fprintf fmt "%a;@." 
392
      (pp_c_type cdecl.const_id) (Types.dynamic_type cdecl.const_type) 
393
  else
394
    fprintf fmt "%a = %a;@." 
395
      (pp_c_type cdecl.const_id) cdecl.const_type
396
      pp_c_const cdecl.const_value 
397

    
398

    
399
let print_alloc_instance fmt (i, (m, static)) =
400
  fprintf fmt "_alloc->%s = %a (%a);@,"
401
    i
402
    pp_machine_alloc_name (node_name m)
403
    (Utils.fprintf_list ~sep:", " Dimension.pp_dimension) static
404

    
405
let print_dealloc_instance fmt (i, (m, _)) =
406
  fprintf fmt "%a (_alloc->%s);@,"
407
    pp_machine_dealloc_name (node_name m)
408
    i
409

    
410
let print_alloc_const fmt m =
411
  let const_locals = List.filter (fun vdecl -> vdecl.var_dec_const) m.mstep.step_locals in
412
  fprintf fmt "%a%t"
413
    (Utils.fprintf_list ~sep:";@," (pp_c_decl_local_var m)) const_locals
414
    (Utils.pp_final_char_if_non_empty ";@," const_locals)
415

    
416
let print_alloc_array fmt vdecl =
417
  let base_type = Types.array_base_type vdecl.var_type in
418
  let size_types = Types.array_type_multi_dimension vdecl.var_type in
419
  let size_type = Dimension.multi_dimension_product vdecl.var_loc size_types in
420
  fprintf fmt "_alloc->_reg.%s = (%a*) malloc((%a)*sizeof(%a));@,assert(_alloc->%s);@,"
421
    vdecl.var_id
422
    (pp_c_type "") base_type
423
    Dimension.pp_dimension size_type
424
    (pp_c_type "") base_type
425
    vdecl.var_id
426

    
427
let print_dealloc_array fmt vdecl =
428
  fprintf fmt "free (_alloc->_reg.%s);@,"
429
    vdecl.var_id
430

    
431
let print_alloc_code fmt m =
432
  let array_mem = List.filter (fun v -> Types.is_array_type v.var_type) m.mmemory in
433
  fprintf fmt "%a *_alloc;@,_alloc = (%a *) malloc(sizeof(%a));@,assert(_alloc);@,%a%areturn _alloc;"
434
    pp_machine_memtype_name m.mname.node_id
435
    pp_machine_memtype_name m.mname.node_id
436
    pp_machine_memtype_name m.mname.node_id
437
    (Utils.fprintf_list ~sep:"" print_alloc_array) array_mem
438
    (Utils.fprintf_list ~sep:"" print_alloc_instance) m.minstances
439

    
440
let print_dealloc_code fmt m =
441
  let array_mem = List.filter (fun v -> Types.is_array_type v.var_type) m.mmemory in
442
  fprintf fmt "%a%afree (_alloc);@,return;"
443
    (Utils.fprintf_list ~sep:"" print_dealloc_array) array_mem
444
    (Utils.fprintf_list ~sep:"" print_dealloc_instance) m.minstances
445

    
446
let print_stateless_init_code dependencies fmt m self =
447
  let minit = List.map (fun i -> match get_instr_desc i with MReset i -> i | _ -> assert false) m.minit in
448
  let array_mems = List.filter (fun v -> Types.is_array_type v.var_type) m.mmemory in
449
  fprintf fmt "@[<v 2>%a {@,%a%t%a%t%a%treturn;@]@,}@.@."
450
    (print_init_prototype self) (m.mname.node_id, m.mstatic)
451
    (* array mems *) 
452
    (Utils.fprintf_list ~sep:";@," (pp_c_decl_array_mem self)) array_mems
453
    (Utils.pp_final_char_if_non_empty ";@," array_mems)
454
    (* memory initialization *)
455
    (Utils.fprintf_list ~sep:"@," (pp_initialize m self (pp_c_var_read m))) m.mmemory
456
    (Utils.pp_newline_if_non_empty m.mmemory)
457
    (* sub-machines initialization *)
458
    (Utils.fprintf_list ~sep:"@," (pp_machine_init m self)) minit
459
    (Utils.pp_newline_if_non_empty m.minit)
460

    
461
let print_stateless_clear_code dependencies fmt m self =
462
  let minit = List.map (fun i -> match get_instr_desc i with MReset i -> i | _ -> assert false) m.minit in
463
  let array_mems = List.filter (fun v -> Types.is_array_type v.var_type) m.mmemory in
464
  fprintf fmt "@[<v 2>%a {@,%a%t%a%t%a%treturn;@]@,}@.@."
465
    (print_clear_prototype self) (m.mname.node_id, m.mstatic)
466
    (* array mems *)
467
    (Utils.fprintf_list ~sep:";@," (pp_c_decl_array_mem self)) array_mems
468
    (Utils.pp_final_char_if_non_empty ";@," array_mems)
469
    (* memory clear *)
470
    (Utils.fprintf_list ~sep:"@," (pp_clear m self (pp_c_var_read m))) m.mmemory
471
    (Utils.pp_newline_if_non_empty m.mmemory)
472
    (* sub-machines clear*)
473
    (Utils.fprintf_list ~sep:"@," (pp_machine_clear m self)) minit
474
    (Utils.pp_newline_if_non_empty m.minit)
475

    
476
let print_stateless_code dependencies fmt m =
477
  let self = "__ERROR__" in
478
  if not (!Options.ansi && is_generic_node { top_decl_desc = Node m.mname; top_decl_loc = Location.dummy_loc; top_decl_owner = ""; top_decl_itf = false })
479
  then
480
    (* C99 code *)
481
    fprintf fmt "@[<v 2>%a {@,%a%t%a%t@,%a%a%t%a%t%t@]@,}@.@."
482
      print_stateless_prototype (m.mname.node_id, m.mstep.step_inputs, m.mstep.step_outputs)
483
      (* locals *)
484
      (Utils.fprintf_list ~sep:";@," (pp_c_decl_local_var m)) m.mstep.step_locals
485
      (Utils.pp_final_char_if_non_empty ";@," m.mstep.step_locals)
486
      (* locals initialization *)
487
      (Utils.fprintf_list ~sep:"@," (pp_initialize m self (pp_c_var_read m))) m.mstep.step_locals
488
      (Utils.pp_newline_if_non_empty m.mstep.step_locals)
489
      (* check assertions *)
490
      (pp_c_checks self) m
491
      (* instrs *)
492
      (Utils.fprintf_list ~sep:"@," (pp_machine_instr dependencies m self)) m.mstep.step_instrs
493
      (Utils.pp_newline_if_non_empty m.mstep.step_instrs)
494
      (* locals clear *)
495
      (Utils.fprintf_list ~sep:"@," (pp_clear m self (pp_c_var_read m))) m.mstep.step_locals
496
      (Utils.pp_newline_if_non_empty m.mstep.step_locals)
497
      (fun fmt -> fprintf fmt "return;")
498
  else
499
    (* C90 code *)
500
    let (gen_locals, base_locals) = List.partition (fun v -> Types.is_generic_type v.var_type) m.mstep.step_locals in
501
    let gen_calls = List.map (fun e -> let (id, _, _) = call_of_expr e in mk_call_var_decl e.expr_loc id) m.mname.node_gencalls in
502
    fprintf fmt "@[<v 2>%a {@,%a%t%a%t@,%a%a%t%a%t%t@]@,}@.@."
503
      print_stateless_prototype (m.mname.node_id, (m.mstep.step_inputs@gen_locals@gen_calls), m.mstep.step_outputs)
504
      (* locals *)
505
      (Utils.fprintf_list ~sep:";@," (pp_c_decl_local_var m)) base_locals
506
      (Utils.pp_final_char_if_non_empty ";" base_locals)
507
      (* locals initialization *)
508
      (Utils.fprintf_list ~sep:"@," (pp_initialize m self (pp_c_var_read m))) m.mstep.step_locals
509
      (Utils.pp_newline_if_non_empty m.mstep.step_locals)
510
      (* check assertions *)
511
      (pp_c_checks self) m
512
      (* instrs *)
513
      (Utils.fprintf_list ~sep:"@," (pp_machine_instr dependencies m self)) m.mstep.step_instrs
514
      (Utils.pp_newline_if_non_empty m.mstep.step_instrs)
515
      (* locals clear *)
516
      (Utils.fprintf_list ~sep:"@," (pp_clear m self (pp_c_var_read m))) m.mstep.step_locals
517
      (Utils.pp_newline_if_non_empty m.mstep.step_locals)
518
      (fun fmt -> fprintf fmt "return;")
519

    
520
let print_reset_code dependencies fmt m self =
521
  let const_locals = List.filter (fun vdecl -> vdecl.var_dec_const) m.mstep.step_locals in
522
  fprintf fmt "@[<v 2>%a {@,%a%t@,%a%treturn;@]@,}@.@."
523
    (print_reset_prototype self) (m.mname.node_id, m.mstatic)
524
    (* constant locals decl *)
525
    (Utils.fprintf_list ~sep:";@," (pp_c_decl_local_var m)) const_locals
526
    (Utils.pp_final_char_if_non_empty ";" const_locals)
527
    (* instrs *)
528
    (Utils.fprintf_list ~sep:"@," (pp_machine_instr dependencies m self)) m.minit
529
    (Utils.pp_newline_if_non_empty m.minit)
530

    
531
let print_init_code dependencies fmt m self =
532
  let minit = List.map (fun i -> match get_instr_desc i with MReset i -> i | _ -> assert false) m.minit in
533
  let array_mems = List.filter (fun v -> Types.is_array_type v.var_type) m.mmemory in
534
  fprintf fmt "@[<v 2>%a {@,%a%t%a%t%a%treturn;@]@,}@.@."
535
    (print_init_prototype self) (m.mname.node_id, m.mstatic)
536
    (* array mems *) 
537
    (Utils.fprintf_list ~sep:";@," (pp_c_decl_array_mem self)) array_mems
538
    (Utils.pp_final_char_if_non_empty ";@," array_mems)
539
    (* memory initialization *)
540
    (Utils.fprintf_list ~sep:"@," (pp_initialize m self (pp_c_var_read m))) m.mmemory
541
    (Utils.pp_newline_if_non_empty m.mmemory)
542
    (* sub-machines initialization *)
543
    (Utils.fprintf_list ~sep:"@," (pp_machine_init m self)) minit
544
    (Utils.pp_newline_if_non_empty m.minit)
545

    
546
let print_clear_code dependencies fmt m self =
547
  let minit = List.map (fun i -> match get_instr_desc i with MReset i -> i | _ -> assert false) m.minit in
548
  let array_mems = List.filter (fun v -> Types.is_array_type v.var_type) m.mmemory in
549
  fprintf fmt "@[<v 2>%a {@,%a%t%a%t%a%treturn;@]@,}@.@."
550
    (print_clear_prototype self) (m.mname.node_id, m.mstatic)
551
    (* array mems *)
552
    (Utils.fprintf_list ~sep:";@," (pp_c_decl_array_mem self)) array_mems
553
    (Utils.pp_final_char_if_non_empty ";@," array_mems)
554
    (* memory clear *)
555
    (Utils.fprintf_list ~sep:"@," (pp_clear m self (pp_c_var_read m))) m.mmemory
556
    (Utils.pp_newline_if_non_empty m.mmemory)
557
    (* sub-machines clear*)
558
    (Utils.fprintf_list ~sep:"@," (pp_machine_clear m self)) minit
559
    (Utils.pp_newline_if_non_empty m.minit)
560

    
561
let print_step_code dependencies fmt m self =
562
  if not (!Options.ansi && is_generic_node { top_decl_desc = Node m.mname; top_decl_loc = Location.dummy_loc; top_decl_owner = ""; top_decl_itf = false })
563
  then
564
    (* C99 code *)
565
    let array_mems = List.filter (fun v -> Types.is_array_type v.var_type) m.mmemory in
566
    fprintf fmt "@[<v 2>%a {@,%a%t%a%t%a%t@,%a%a%t%a%t%t@]@,}@.@."
567
      (print_step_prototype self) (m.mname.node_id, m.mstep.step_inputs, m.mstep.step_outputs)
568
      (* locals *)
569
      (Utils.fprintf_list ~sep:";@," (pp_c_decl_local_var m)) m.mstep.step_locals
570
      (Utils.pp_final_char_if_non_empty ";@," m.mstep.step_locals)
571
      (* array mems *)
572
      (Utils.fprintf_list ~sep:";@," (pp_c_decl_array_mem self)) array_mems
573
      (Utils.pp_final_char_if_non_empty ";@," array_mems)
574
      (* locals initialization *)
575
      (Utils.fprintf_list ~sep:"@," (pp_initialize m self (pp_c_var_read m))) m.mstep.step_locals
576
      (Utils.pp_newline_if_non_empty m.mstep.step_locals)
577
      (* check assertions *)
578
      (pp_c_checks self) m
579
      (* instrs *)
580
      (Utils.fprintf_list ~sep:"@," (pp_machine_instr dependencies m self)) m.mstep.step_instrs
581
      (Utils.pp_newline_if_non_empty m.mstep.step_instrs)
582
      (* locals clear *)
583
      (Utils.fprintf_list ~sep:"@," (pp_clear m self (pp_c_var_read m))) m.mstep.step_locals
584
      (Utils.pp_newline_if_non_empty m.mstep.step_locals)
585
      (fun fmt -> fprintf fmt "return;")
586
  else
587
    (* C90 code *)
588
    let (gen_locals, base_locals) = List.partition (fun v -> Types.is_generic_type v.var_type) m.mstep.step_locals in
589
    let gen_calls = List.map (fun e -> let (id, _, _) = call_of_expr e in mk_call_var_decl e.expr_loc id) m.mname.node_gencalls in
590
    fprintf fmt "@[<v 2>%a {@,%a%t%a%t@,%a%a%t%a%t%t@]@,}@.@."
591
      (print_step_prototype self) (m.mname.node_id, (m.mstep.step_inputs@gen_locals@gen_calls), m.mstep.step_outputs)
592
      (* locals *)
593
      (Utils.fprintf_list ~sep:";@," (pp_c_decl_local_var m)) base_locals
594
      (Utils.pp_final_char_if_non_empty ";" base_locals)
595
      (* locals initialization *)
596
      (Utils.fprintf_list ~sep:"@," (pp_initialize m self (pp_c_var_read m))) m.mstep.step_locals
597
      (Utils.pp_newline_if_non_empty m.mstep.step_locals)
598
      (* check assertions *)
599
      (pp_c_checks self) m
600
      (* instrs *)
601
      (Utils.fprintf_list ~sep:"@," (pp_machine_instr dependencies m self)) m.mstep.step_instrs
602
      (Utils.pp_newline_if_non_empty m.mstep.step_instrs)
603
      (* locals clear *)
604
      (Utils.fprintf_list ~sep:"@," (pp_clear m self (pp_c_var_read m))) m.mstep.step_locals
605
      (Utils.pp_newline_if_non_empty m.mstep.step_locals)
606
      (fun fmt -> fprintf fmt "return;")
607

    
608

    
609
(********************************************************************************************)
610
(*                     MAIN C file Printing functions                                       *)
611
(********************************************************************************************)
612

    
613
let print_global_init_code fmt basename prog dependencies =
614
  let baseNAME = file_to_module_name basename in
615
  let constants = List.map const_of_top (get_consts prog) in
616
  fprintf fmt "@[<v 2>%a {@,static %s init = 0;@,@[<v 2>if (!init) { @,init = 1;@,%a%t%a@]@,}@,return;@]@,}@.@."
617
    print_global_init_prototype baseNAME
618
    (pp_c_basic_type_desc Type_predef.type_bool)
619
    (* constants *) 
620
    (Utils.fprintf_list ~sep:"@," (pp_const_initialize empty_machine (pp_c_var_read empty_machine))) constants
621
    (Utils.pp_final_char_if_non_empty "@," dependencies)
622
    (* dependencies initialization *)
623
    (Utils.fprintf_list ~sep:"@," print_import_init) dependencies
624

    
625
let print_global_clear_code  fmt basename prog dependencies =
626
  let baseNAME = file_to_module_name basename in
627
  let constants = List.map const_of_top (get_consts prog) in
628
  fprintf fmt "@[<v 2>%a {@,static %s clear = 0;@,@[<v 2>if (!clear) { @,clear = 1;@,%a%t%a@]@,}@,return;@]@,}@.@."
629
    print_global_clear_prototype baseNAME
630
    (pp_c_basic_type_desc Type_predef.type_bool)
631
    (* constants *) 
632
    (Utils.fprintf_list ~sep:"@," (pp_const_clear (pp_c_var_read empty_machine))) constants
633
    (Utils.pp_final_char_if_non_empty "@," dependencies)
634
    (* dependencies initialization *)
635
    (Utils.fprintf_list ~sep:"@," print_import_clear) dependencies
636

    
637
(* TODO: ACSL 
638
- a contract machine shall not be directly printed in the C source
639
- but a regular machine associated to a contract machine shall integrate the associated statements, updating its memories, at the end of the function body.
640
- last one may print intermediate comment/acsl if/when they are present in the sequence of instruction
641
*)
642
let print_machine dependencies fmt m =
643
  if fst (get_stateless_status m) then
644
    begin
645
      (* Step function *)
646
      print_stateless_code dependencies fmt m
647
    end
648
  else
649
    begin
650
      (* Alloc functions, only if non static mode *)
651
      if (not !Options.static_mem) then  
652
	begin
653
	  fprintf fmt "@[<v 2>%a {@,%a%a@]@,}@.@."
654
	    print_alloc_prototype (m.mname.node_id, m.mstatic)
655
	    print_alloc_const m
656
	    print_alloc_code m;
657

    
658
	  fprintf fmt "@[<v 2>%a {@,%a%a@]@,}@.@."
659
	    print_dealloc_prototype m.mname.node_id
660
	    print_alloc_const m
661
	    print_dealloc_code m;
662
	end;
663
      let self = mk_self m in
664
      (* Reset function *)
665
      print_reset_code dependencies fmt m self;
666
      (* Step function *)
667
      print_step_code dependencies fmt m self;
668
      
669
      if !Options.mpfr then
670
	begin
671
          (* Init function *)
672
	  print_init_code dependencies fmt m self;
673
          (* Clear function *)
674
	  print_clear_code dependencies fmt m self;
675
	end
676
    end
677

    
678
let print_import_standard source_fmt =
679
  begin
680
    fprintf source_fmt "#include <assert.h>@.";
681
    if Machine_types.has_machine_type () then
682
      begin
683
	fprintf source_fmt "#include <stdint.h>@."
684
      end;
685
    if not !Options.static_mem then
686
      begin
687
	fprintf source_fmt "#include <stdlib.h>@.";
688
      end;
689
    if !Options.mpfr then
690
      begin
691
	fprintf source_fmt "#include <mpfr.h>@.";
692
      end
693
  end
694

    
695
let print_lib_c source_fmt basename prog machines dependencies =
696
  print_import_standard source_fmt;
697
  print_import_prototype source_fmt {local=true; name=basename; content=[]; is_stateful=true} (* assuming it is stateful *);
698
  pp_print_newline source_fmt ();
699
  (* Print the svn version number and the supported C standard (C90 or C99) *)
700
  print_version source_fmt;
701
  (* Print the prototype of imported nodes *)
702
  fprintf source_fmt "/* Import dependencies */@.";
703
  fprintf source_fmt "@[<v>";
704
  List.iter (print_import_prototype source_fmt) dependencies;
705
  fprintf source_fmt "@]@.";
706
  (* Print consts *)
707
  fprintf source_fmt "/* Global constants (definitions) */@.";
708
  fprintf source_fmt "@[<v>";
709
  List.iter (fun c -> print_const_def source_fmt (const_of_top c)) (get_consts prog);
710
  fprintf source_fmt "@]@.";
711
  if !Options.mpfr then
712
    begin
713
      fprintf source_fmt "/* Global constants initialization */@.";
714
      print_global_init_code source_fmt basename prog dependencies;
715
      fprintf source_fmt "/* Global constants clearing */@.";
716
      print_global_clear_code source_fmt basename prog dependencies;
717
    end;
718
  if not !Options.static_mem then
719
    begin
720
      fprintf source_fmt "/* External allocation function prototypes */@.";
721
      fprintf source_fmt "@[<v>";
722
      List.iter (print_extern_alloc_prototypes source_fmt) dependencies;
723
      fprintf source_fmt "@]@.";
724
      fprintf source_fmt "/* Node allocation function prototypes */@.";
725
      fprintf source_fmt "@[<v>";
726
      List.iter
727
	(fun m -> fprintf source_fmt "%a;@.@.%a;@.@."
728
	  print_alloc_prototype (m.mname.node_id, m.mstatic)
729
	  print_dealloc_prototype m.mname.node_id
730
	)
731
	machines;
732
      fprintf source_fmt "@]@.";
733
    end;
734

    
735
  (* Print the struct definitions of all machines. *)
736
  fprintf source_fmt "/* Struct definitions */@.";
737
  fprintf source_fmt "@[<v>";
738
  List.iter (print_machine_struct machines source_fmt) machines;
739
  fprintf source_fmt "@]@.";
740
  pp_print_newline source_fmt ();
741
  (* Print nodes one by one (in the previous order) *)
742
  List.iter (print_machine dependencies source_fmt) machines;
743
 end
744

    
745
(* Local Variables: *)
746
(* compile-command:"make -C ../../.." *)
747
(* End: *)