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-- Annotations for interpreted simulation
-- 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>.
with Vhdl.Nodes; use Vhdl.Nodes;
package Elab.Vhdl_Annotations is
type Object_Slot_Type is new Natural;
-- This slot is not used.
Invalid_Object_Slot : constant Object_Slot_Type := 0;
type Block_Instance_Id is new Natural;
No_Block_Instance_Id : constant Block_Instance_Id := 0;
-- For Kind_Extra: a number. Kind_Extra is not used by annotations, and
-- is free for another pass like preelab.
type Extra_Slot_Type is new Natural;
-- The annotation depends on the kind of the node.
type Sim_Info_Kind is
(
Kind_Block, Kind_Process, Kind_Frame, Kind_Protected, Kind_Package,
Kind_Type,
Kind_Object, Kind_Signal,
Kind_File,
Kind_Terminal, Kind_Quantity,
Kind_PSL,
Kind_Extra
);
type Instance_Slot_Type is new Integer;
Invalid_Instance_Slot : constant Instance_Slot_Type := -1;
type Sim_Info_Type (Kind : Sim_Info_Kind);
type Sim_Info_Acc is access all Sim_Info_Type;
-- Annotation for an iir node in order to be able to simulate it.
type Sim_Info_Type (Kind: Sim_Info_Kind) is record
-- Redundant, to be used only for debugging.
Ref : Iir;
case Kind is
when Kind_Block
| Kind_Frame
| Kind_Protected
| Kind_Process
| Kind_Package =>
-- Number of objects/signals.
Nbr_Objects : Object_Slot_Type;
case Kind is
when Kind_Block =>
-- Slot number in the parent (for blocks).
Inst_Slot : Object_Slot_Type;
-- Number of children (blocks, generate, instantiation).
Nbr_Instances : Instance_Slot_Type;
when Kind_Package =>
Pkg_Slot : Object_Slot_Type;
Pkg_Parent : Sim_Info_Acc;
when others =>
null;
end case;
when Kind_Object
| Kind_Signal
| Kind_File
| Kind_Terminal
| Kind_Quantity
| Kind_PSL
| Kind_Type =>
-- Block in which this object is declared in.
Obj_Scope : Sim_Info_Acc;
-- Variable index in the block.
Slot: Object_Slot_Type;
when Kind_Extra =>
Extra_Slot : Extra_Slot_Type;
end case;
end record;
-- The first initialization is done automatically, but must be done again
-- after finalization.
procedure Initialize_Annotate;
procedure Finalize_Annotate;
-- Decorate the tree in order to be usable with the internal simulator.
procedure Annotate (Unit : Iir_Design_Unit);
-- Disp annotations for an iir node.
procedure Disp_Vhdl_Info (Node : Iir);
procedure Disp_Tree_Info (Node : Iir);
Global_Info : Sim_Info_Acc;
-- Annotations are used to collect informations for elaboration and to
-- locate iir_value_literal for signals, variables or constants.
-- Get/Set annotation fied from/to an iir.
procedure Set_Info (Target : Iir; Info : Sim_Info_Acc);
pragma Inline (Set_Info);
function Get_Info (Target : Iir) return Sim_Info_Acc;
pragma Inline (Get_Info);
-- Expand the annotation table. This is automatically done by Annotate,
-- to be used only by debugger.
procedure Annotate_Expand_Table;
end Elab.Vhdl_Annotations;
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