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-- Operations synthesis.
-- Copyright (C) 2019 Tristan Gingold
--
-- This file is part of GHDL.
--
-- This program is free software; you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation; either version 2 of the License, or
-- (at your option) any later version.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
-- MA 02110-1301, USA.
with Types; use Types;
with Synth.Errors; use Synth.Errors;
with Synth.Source; use Synth.Source;
with Synth.Expr; use Synth.Expr;
with Synth.Ieee.Std_Logic_1164; use Synth.Ieee.Std_Logic_1164;
with Synth.Ieee.Numeric_Std; use Synth.Ieee.Numeric_Std;
package body Synth.Static_Oper is
-- From openiee:
function Create_Res_Bound (Prev : Type_Acc) return Type_Acc is
begin
if Prev.Vbound.Dir = Iir_Downto
and then Prev.Vbound.Right = 0
then
-- Normalized range
return Prev;
end if;
return Create_Vec_Type_By_Length (Prev.W, Prev.Vec_El);
end Create_Res_Bound;
function Synth_Vector_Dyadic
(L, R : Value_Acc; Op : Table_2d; Loc : Syn_Src) return Value_Acc
is
El_Typ : constant Type_Acc := L.Typ.Vec_El;
Arr : Value_Array_Acc;
begin
if L.Arr.Len /= R.Arr.Len then
Error_Msg_Synth (+Loc, "length of operands mismatch");
return null;
end if;
Arr := Create_Value_Array (L.Arr.Len);
for I in Arr.V'Range loop
declare
Ls : constant Std_Ulogic :=
Std_Ulogic'Val (L.Arr.V (I).Scal);
Rs : constant Std_Ulogic :=
Std_Ulogic'Val (R.Arr.V (I).Scal);
V : constant Std_Ulogic := Op (Ls, Rs);
begin
Arr.V (I) := Create_Value_Discrete (Std_Ulogic'Pos (V), El_Typ);
end;
end loop;
return Create_Value_Const_Array (Create_Res_Bound (L.Typ), Arr);
end Synth_Vector_Dyadic;
procedure To_Std_Logic_Vector
(Val : Value_Acc; Arr : out Std_Logic_Vector) is
begin
for I in Val.Arr.V'Range loop
Arr (Natural (I)) := Std_Ulogic'Val (Val.Arr.V (I).Scal);
end loop;
end To_Std_Logic_Vector;
function To_Value_Acc (Vec : Std_Logic_Vector; El_Typ : Type_Acc)
return Value_Acc
is
pragma Assert (Vec'First = 1);
Res_Typ : Type_Acc;
Arr : Value_Array_Acc;
begin
Res_Typ := Create_Vec_Type_By_Length (Uns32 (Vec'Last), El_Typ);
Arr := Create_Value_Array (Iir_Index32 (Vec'Last));
for I in Vec'Range loop
Arr.V (Iir_Index32 (I)) :=
Create_Value_Discrete (Std_Ulogic'Pos (Vec (I)), El_Typ);
end loop;
return Create_Value_Const_Array (Res_Typ, Arr);
end To_Value_Acc;
function Synth_Add_Uns_Uns (L, R : Value_Acc; Loc : Syn_Src)
return Value_Acc
is
pragma Unreferenced (Loc);
L_Arr : Std_Logic_Vector (1 .. Natural (L.Arr.Len));
R_Arr : Std_Logic_Vector (1 .. Natural (R.Arr.Len));
begin
To_Std_Logic_Vector (L, L_Arr);
To_Std_Logic_Vector (R, R_Arr);
declare
Res_Arr : constant Std_Logic_Vector := Add_Uns_Uns (L_Arr, R_Arr);
begin
return To_Value_Acc (Res_Arr, L.Typ.Vec_El);
end;
end Synth_Add_Uns_Uns;
function Synth_Add_Sgn_Int (L, R : Value_Acc; Loc : Syn_Src)
return Value_Acc
is
pragma Unreferenced (Loc);
L_Arr : Std_Logic_Vector (1 .. Natural (L.Arr.Len));
R_Val : constant Int64 := R.Scal;
begin
To_Std_Logic_Vector (L, L_Arr);
declare
Res_Arr : constant Std_Logic_Vector := Add_Sgn_Int (L_Arr, R_Val);
begin
return To_Value_Acc (Res_Arr, L.Typ.Vec_El);
end;
end Synth_Add_Sgn_Int;
function Synth_Add_Uns_Nat (L, R : Value_Acc; Loc : Syn_Src)
return Value_Acc
is
pragma Unreferenced (Loc);
L_Arr : Std_Logic_Vector (1 .. Natural (L.Arr.Len));
R_Val : constant Uns64 := Uns64 (R.Scal);
begin
To_Std_Logic_Vector (L, L_Arr);
declare
Res_Arr : constant Std_Logic_Vector := Add_Uns_Nat (L_Arr, R_Val);
begin
return To_Value_Acc (Res_Arr, L.Typ.Vec_El);
end;
end Synth_Add_Uns_Nat;
function Synth_Mul_Uns_Uns (L, R : Value_Acc; Loc : Syn_Src)
return Value_Acc
is
pragma Unreferenced (Loc);
L_Arr : Std_Logic_Vector (1 .. Natural (L.Arr.Len));
R_Arr : Std_Logic_Vector (1 .. Natural (R.Arr.Len));
begin
To_Std_Logic_Vector (L, L_Arr);
To_Std_Logic_Vector (R, R_Arr);
declare
Res_Arr : constant Std_Logic_Vector := Mul_Uns_Uns (L_Arr, R_Arr);
begin
return To_Value_Acc (Res_Arr, L.Typ.Vec_El);
end;
end Synth_Mul_Uns_Uns;
function Synth_Mul_Sgn_Sgn (L, R : Value_Acc; Loc : Syn_Src)
return Value_Acc
is
pragma Unreferenced (Loc);
L_Arr : Std_Logic_Vector (1 .. Natural (L.Arr.Len));
R_Arr : Std_Logic_Vector (1 .. Natural (R.Arr.Len));
begin
To_Std_Logic_Vector (L, L_Arr);
To_Std_Logic_Vector (R, R_Arr);
declare
Res_Arr : constant Std_Logic_Vector := Mul_Sgn_Sgn (L_Arr, R_Arr);
begin
return To_Value_Acc (Res_Arr, L.Typ.Vec_El);
end;
end Synth_Mul_Sgn_Sgn;
function Synth_Static_Dyadic_Predefined (Syn_Inst : Synth_Instance_Acc;
Imp : Node;
Left : Value_Acc;
Right : Value_Acc;
Expr : Node) return Value_Acc
is
Def : constant Iir_Predefined_Functions :=
Get_Implicit_Definition (Imp);
Res_Typ : constant Type_Acc :=
Get_Value_Type (Syn_Inst, Get_Type (Expr));
begin
case Def is
when Iir_Predefined_Error =>
return null;
when Iir_Predefined_Enum_Equality =>
return Create_Value_Discrete
(Boolean'Pos (Left.Scal = Right.Scal), Boolean_Type);
when Iir_Predefined_Integer_Plus =>
return Create_Value_Discrete
(Get_Static_Discrete (Left) + Get_Static_Discrete (Right),
Res_Typ);
when Iir_Predefined_Integer_Minus =>
return Create_Value_Discrete
(Get_Static_Discrete (Left) - Get_Static_Discrete (Right),
Res_Typ);
when Iir_Predefined_Integer_Mul =>
return Create_Value_Discrete
(Get_Static_Discrete (Left) * Get_Static_Discrete (Right),
Res_Typ);
when Iir_Predefined_Integer_Div =>
return Create_Value_Discrete
(Left.Scal / Right.Scal, Res_Typ);
when Iir_Predefined_Integer_Mod =>
return Create_Value_Discrete
(Get_Static_Discrete (Left) mod Get_Static_Discrete (Right),
Res_Typ);
when Iir_Predefined_Integer_Rem =>
return Create_Value_Discrete
(Left.Scal rem Right.Scal, Res_Typ);
when Iir_Predefined_Integer_Exp =>
return Create_Value_Discrete
(Left.Scal ** Natural (Right.Scal), Res_Typ);
when Iir_Predefined_Integer_Less_Equal =>
return Create_Value_Discrete
(Boolean'Pos (Left.Scal <= Right.Scal), Boolean_Type);
when Iir_Predefined_Integer_Less =>
return Create_Value_Discrete
(Boolean'Pos (Left.Scal < Right.Scal), Boolean_Type);
when Iir_Predefined_Integer_Greater_Equal =>
return Create_Value_Discrete
(Boolean'Pos (Left.Scal >= Right.Scal), Boolean_Type);
when Iir_Predefined_Integer_Greater =>
return Create_Value_Discrete
(Boolean'Pos (Left.Scal > Right.Scal), Boolean_Type);
when Iir_Predefined_Integer_Equality =>
return Create_Value_Discrete
(Boolean'Pos (Get_Static_Discrete (Left)
= Get_Static_Discrete (Right)), Boolean_Type);
when Iir_Predefined_Integer_Inequality =>
return Create_Value_Discrete
(Boolean'Pos (Get_Static_Discrete (Left)
/= Get_Static_Discrete (Right)), Boolean_Type);
when Iir_Predefined_Physical_Physical_Div =>
return Create_Value_Discrete
(Left.Scal / Right.Scal, Res_Typ);
when Iir_Predefined_Floating_Div =>
return Create_Value_Float
(Left.Fp / Right.Fp, Res_Typ);
when Iir_Predefined_Array_Equality
| Iir_Predefined_Record_Equality =>
return Create_Value_Discrete
(Boolean'Pos (Is_Equal (Left, Right)), Boolean_Type);
when Iir_Predefined_Array_Inequality
| Iir_Predefined_Record_Inequality =>
return Create_Value_Discrete
(Boolean'Pos (not Is_Equal (Left, Right)), Boolean_Type);
when Iir_Predefined_Access_Equality =>
return Create_Value_Discrete
(Boolean'Pos (Left.Acc = Right.Acc), Boolean_Type);
when Iir_Predefined_Access_Inequality =>
return Create_Value_Discrete
(Boolean'Pos (Left.Acc /= Right.Acc), Boolean_Type);
when Iir_Predefined_Ieee_1164_Vector_And
| Iir_Predefined_Ieee_Numeric_Std_And_Uns_Uns
| Iir_Predefined_Ieee_Numeric_Std_And_Sgn_Sgn =>
return Synth_Vector_Dyadic (Left, Right, And_Table, Expr);
when Iir_Predefined_Ieee_1164_Vector_Or =>
return Synth_Vector_Dyadic (Left, Right, Or_Table, Expr);
when Iir_Predefined_Ieee_Numeric_Std_Add_Uns_Uns =>
return Synth_Add_Uns_Uns (Left, Right, Expr);
when Iir_Predefined_Ieee_Numeric_Std_Add_Sgn_Int =>
return Synth_Add_Sgn_Int (Left, Right, Expr);
when Iir_Predefined_Ieee_Numeric_Std_Add_Uns_Nat =>
return Synth_Add_Uns_Nat (Left, Right, Expr);
when Iir_Predefined_Ieee_Numeric_Std_Mul_Uns_Uns =>
return Synth_Mul_Uns_Uns (Left, Right, Expr);
when Iir_Predefined_Ieee_Numeric_Std_Mul_Sgn_Sgn =>
return Synth_Mul_Sgn_Sgn (Left, Right, Expr);
when others =>
Error_Msg_Synth
(+Expr, "synth_static_dyadic_predefined: unhandled "
& Iir_Predefined_Functions'Image (Def));
raise Internal_Error;
end case;
end Synth_Static_Dyadic_Predefined;
end Synth.Static_Oper;
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