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-- GHDL Run Time (GRT) std_logic_1664 subprograms.
-- Copyright (C) 2014 Tristan Gingold
--
-- 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, see <gnu.org/licenses>.
--
-- As a special exception, if other files instantiate generics from this
-- unit, or you link this unit with other files to produce an executable,
-- this unit does not by itself cause the resulting executable to be
-- covered by the GNU General Public License. This exception does not
-- however invalidate any other reasons why the executable file might be
-- covered by the GNU Public License.
with Grt.Vhdl_Types; use Grt.Vhdl_Types;
with Grt.Lib;
with Grt.Errors; use Grt.Errors;
with Grt.Severity; use Grt.Severity;
package body Grt.Std_Logic_1164 is
Assert_DC_Msg : constant String :=
"STD_LOGIC_1164: '-' operand for matching ordering operator";
Assert_DC_Msg_Bound : constant Std_String_Bound :=
(Dim_1 => (Left => 1, Right => Assert_DC_Msg'Length, Dir => Dir_To,
Length => Assert_DC_Msg'Length));
Assert_DC_Msg_Str : aliased constant Std_String :=
(Base => To_Std_String_Basep (Assert_DC_Msg'Address),
Bounds => To_Std_String_Boundp (Assert_DC_Msg_Bound'Address));
Filename : constant String := "std_logic_1164.vhdl" & NUL;
Loc : aliased constant Ghdl_Location :=
(Filename => To_Ghdl_C_String (Filename'Address),
Line => 58,
Col => 3);
procedure Assert_Not_Match
is
use Grt.Lib;
begin
Ghdl_Ieee_Assert_Failed
(To_Std_String_Ptr (Assert_DC_Msg_Str'Address), Error_Severity,
To_Ghdl_Location_Ptr (Loc'Address));
end Assert_Not_Match;
function Ghdl_Std_Ulogic_Match_Eq (L, R : Ghdl_E8) return Ghdl_E8
is
Left : constant Std_Ulogic := Std_Ulogic'Val (L);
Right : constant Std_Ulogic := Std_Ulogic'Val (R);
begin
return Std_Ulogic'Pos (Match_Eq_Table (Left, Right));
end Ghdl_Std_Ulogic_Match_Eq;
function Ghdl_Std_Ulogic_Match_Ne (L, R : Ghdl_E8) return Ghdl_E8
is
Left : constant Std_Ulogic := Std_Ulogic'Val (L);
Right : constant Std_Ulogic := Std_Ulogic'Val (R);
begin
return Std_Ulogic'Pos (Not_Table (Match_Eq_Table (Left, Right)));
end Ghdl_Std_Ulogic_Match_Ne;
function Ghdl_Std_Ulogic_Match_Lt (L, R : Ghdl_E8) return Ghdl_E8
is
Left : constant Std_Ulogic := Std_Ulogic'Val (L);
Right : constant Std_Ulogic := Std_Ulogic'Val (R);
begin
if Left = '-' or Right = '-' then
Assert_Not_Match;
end if;
return Std_Ulogic'Pos (Match_Lt_Table (Left, Right));
end Ghdl_Std_Ulogic_Match_Lt;
function Ghdl_Std_Ulogic_Match_Le (L, R : Ghdl_E8) return Ghdl_E8
is
Left : constant Std_Ulogic := Std_Ulogic'Val (L);
Right : constant Std_Ulogic := Std_Ulogic'Val (R);
begin
if Left = '-' or Right = '-' then
Assert_Not_Match;
end if;
return Std_Ulogic'Pos (Or_Table (Match_Lt_Table (Left, Right),
Match_Eq_Table (Left, Right)));
end Ghdl_Std_Ulogic_Match_Le;
function Ghdl_Std_Ulogic_Match_Ge (L, R : Ghdl_E8) return Ghdl_E8
is
Lt : constant Ghdl_E8 := Ghdl_Std_Ulogic_Match_Lt(L, R);
begin
return Std_Ulogic'Pos (Not_Table (Std_Ulogic'Val(Lt))) ;
end Ghdl_Std_Ulogic_Match_Ge;
function Ghdl_Std_Ulogic_Match_Gt (L, R : Ghdl_E8) return Ghdl_E8
is
Le : constant Ghdl_E8 := Ghdl_Std_Ulogic_Match_Le(L, R);
begin
return Std_Ulogic'Pos (Not_Table (Std_Ulogic'Val(Le))) ;
end Ghdl_Std_Ulogic_Match_Gt;
Assert_Arr_Msg : constant String :=
"parameters of '?=' array operator are not of the same length";
Assert_Arr_Msg_Bound : constant Std_String_Bound :=
(Dim_1 => (Left => 1, Right => Assert_Arr_Msg'Length, Dir => Dir_To,
Length => Assert_Arr_Msg'Length));
Assert_Arr_Msg_Str : aliased constant Std_String :=
(Base => To_Std_String_Basep (Assert_Arr_Msg'Address),
Bounds => To_Std_String_Boundp (Assert_Arr_Msg_Bound'Address));
function Ghdl_Std_Ulogic_Array_Match_Eq (L : Ghdl_Ptr;
L_Len : Ghdl_Index_Type;
R : Ghdl_Ptr;
R_Len : Ghdl_Index_Type)
return Ghdl_I32
is
use Grt.Lib;
L_Arr : constant Ghdl_E8_Array_Base_Ptr :=
To_Ghdl_E8_Array_Base_Ptr (L);
R_Arr : constant Ghdl_E8_Array_Base_Ptr :=
To_Ghdl_E8_Array_Base_Ptr (R);
Res : Std_Ulogic := '1';
begin
if L_Len /= R_Len then
Ghdl_Ieee_Assert_Failed
(To_Std_String_Ptr (Assert_Arr_Msg_Str'Address), Error_Severity,
To_Ghdl_Location_Ptr (Loc'Address));
return Std_Ulogic'Pos ('0');
end if;
for I in 1 .. L_Len loop
declare
Le : constant Std_Ulogic := Std_Ulogic'Val (L_Arr (I - 1));
Re : constant Std_Ulogic := Std_Ulogic'Val (R_Arr (I - 1));
begin
Res := And_Table (Res, Match_Eq_Table (Le, Re));
end;
end loop;
return Std_Ulogic'Pos (Res);
end Ghdl_Std_Ulogic_Array_Match_Eq;
function Ghdl_Std_Ulogic_Array_Match_Ne (L : Ghdl_Ptr;
L_Len : Ghdl_Index_Type;
R : Ghdl_Ptr;
R_Len : Ghdl_Index_Type)
return Ghdl_I32 is
begin
return Std_Ulogic'Pos
(Not_Table (Std_Ulogic'Val
(Ghdl_Std_Ulogic_Array_Match_Eq (L, L_Len, R, R_Len))));
end Ghdl_Std_Ulogic_Array_Match_Ne;
end Grt.Std_Logic_1164;
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