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-- Annotations for interpreted simulation
-- Copyright (C) 2014 Tristan Gingold
--
-- GHDL 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, or (at your option) any later
-- version.
--
-- GHDL 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 GHDL; see the file COPYING. If not, write to the Free
-- Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-- 02111-1307, USA.
with Iirs; use Iirs;
with Iir_Values; use Iir_Values;
with Types; use Types;
package Annotations is
Trace_Annotation : Boolean := False;
-- Decorate the tree in order to be usable with the internal simulator.
procedure Annotate (Tree: Iir_Design_Unit);
-- Disp annotations for an iir node.
procedure Disp_Vhdl_Info (Node: Iir);
procedure Disp_Tree_Info (Node: Iir);
-- Annotations are used to collect informations for elaboration and to
-- locate iir_value_literal for signals, variables or constants.
-- Scope corresponding to an object.
-- Scope_level_global is for objects that can be instancied only one
-- time, ie shared signals or constants declared in a package.
--
-- Scope_Level_Process is for objects declared in an entity, architecture,
-- process, bloc (but not generated bloc). These are static objects, that
-- can be instancied several times.
--
-- Scope_Level_First_Function and above are for dynamic objects declared
-- in a subprogram. The level is also the nest level.
--
-- Scope_Level_Component is set to a maximum, since there is at
-- most one scope after it (the next one is an entity).
type Scope_Level_Type is new Integer;
Scope_Level_Global: constant Scope_Level_Type := 0;
Scope_Level_Entity: constant Scope_Level_Type := 1;
Scope_Level_Component : constant Scope_Level_Type :=
Scope_Level_Type'Last - 1;
type Instance_Slot_Type is new Integer;
Invalid_Instance_Slot : constant Instance_Slot_Type := -1;
type Object_Slot_Type is new Integer;
-- The annotation depends on the kind of the node.
type Sim_Info_Kind is
(Kind_Block, Kind_Process, Kind_Frame,
Kind_Scalar_Type, Kind_File_Type,
Kind_Object, Kind_Signal, Kind_Range,
Kind_File,
Kind_Terminal, Kind_Quantity);
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
case Kind is
when Kind_Block
| Kind_Frame
| Kind_Process =>
-- Slot number.
Inst_Slot : Instance_Slot_Type;
-- scope level for this frame.
Frame_Scope_Level: Scope_Level_Type;
-- Number of objects/signals.
Nbr_Objects : Object_Slot_Type;
-- Number of children (blocks, generate, instantiation).
Nbr_Instances : Instance_Slot_Type;
when Kind_Object
| Kind_Signal
| Kind_Range
| Kind_File
| Kind_Terminal
| Kind_Quantity =>
-- block considered (hierarchy).
Scope_Level: Scope_Level_Type;
-- Variable index.
Slot: Object_Slot_Type;
when Kind_Scalar_Type =>
Scalar_Mode : Iir_Value_Kind;
when Kind_File_Type =>
File_Signature : String_Acc;
end case;
end record;
Nbr_Packages : Iir_Index32 := 0;
-- 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 Annotations;
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