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|
-- Design elaboration
-- Copyright (C) 2021 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, see <gnu.org/licenses>.
with Types; use Types;
with Libraries;
with Vhdl.Utils; use Vhdl.Utils;
with Vhdl.Std_Package;
with Vhdl.Annotations;
with Vhdl.Configuration; use Vhdl.Configuration;
with Vhdl.Errors; use Vhdl.Errors;
with Elab.Vhdl_Objtypes; use Elab.Vhdl_Objtypes;
with Elab.Vhdl_Values; use Elab.Vhdl_Values;
with Elab.Vhdl_Decls; use Elab.Vhdl_Decls;
with Elab.Vhdl_Types; use Elab.Vhdl_Types;
with Elab.Vhdl_Stmts; use Elab.Vhdl_Stmts;
with Elab.Vhdl_Files;
with Elab.Vhdl_Errors; use Elab.Vhdl_Errors;
with Elab.Vhdl_Expr; use Elab.Vhdl_Expr;
package body Elab.Vhdl_Insts is
procedure Elab_Instance_Body (Syn_Inst : Synth_Instance_Acc);
procedure Elab_Recurse_Instantiations
(Syn_Inst : Synth_Instance_Acc; Head : Node);
procedure Elab_Recurse_Instantiations_Statement
(Syn_Inst : Synth_Instance_Acc; Stmt : Node);
procedure Elab_Convertible_Declarations (Syn_Inst : Synth_Instance_Acc)
is
use Vhdl.Std_Package;
begin
Create_Subtype_Object
(Syn_Inst, Convertible_Integer_Type_Definition,
Get_Subtype_Object (Syn_Inst, Universal_Integer_Type_Definition));
Create_Subtype_Object
(Syn_Inst, Convertible_Real_Type_Definition,
Get_Subtype_Object (Syn_Inst, Universal_Real_Type_Definition));
end Elab_Convertible_Declarations;
procedure Elab_Generics_Association (Sub_Inst : Synth_Instance_Acc;
Syn_Inst : Synth_Instance_Acc;
Inter_Chain : Node;
Assoc_Chain : Node)
is
Inter : Node;
Inter_Type : Type_Acc;
Assoc : Node;
Assoc_Inter : Node;
Actual : Node;
Val : Valtyp;
begin
Assoc := Assoc_Chain;
Assoc_Inter := Inter_Chain;
while Is_Valid (Assoc) loop
Inter := Get_Association_Interface (Assoc, Assoc_Inter);
case Iir_Kinds_Interface_Declaration (Get_Kind (Inter)) is
when Iir_Kind_Interface_Constant_Declaration =>
Inter_Type := Elab_Declaration_Type (Sub_Inst, Inter);
case Get_Kind (Assoc) is
when Iir_Kind_Association_Element_Open =>
Actual := Get_Default_Value (Inter);
Val := Exec_Expression_With_Type
(Sub_Inst, Actual, Inter_Type);
when Iir_Kind_Association_Element_By_Expression =>
Actual := Get_Actual (Assoc);
Val := Exec_Expression_With_Type
(Syn_Inst, Actual, Inter_Type);
when others =>
raise Internal_Error;
end case;
Val := Exec_Subtype_Conversion (Val, Inter_Type, True, Assoc);
if Val = No_Valtyp then
Set_Error (Sub_Inst);
elsif not Is_Static (Val.Val) then
Error_Msg_Elab
(+Assoc, "value of generic %i must be static", +Inter);
Val := No_Valtyp;
Set_Error (Sub_Inst);
end if;
Create_Object (Sub_Inst, Inter, Val);
when Iir_Kind_Interface_Package_Declaration =>
declare
Actual : constant Iir :=
Strip_Denoting_Name (Get_Actual (Assoc));
Pkg_Inst : Synth_Instance_Acc;
begin
Pkg_Inst := Get_Package_Object (Sub_Inst, Actual);
Create_Package_Interface (Sub_Inst, Inter, Pkg_Inst);
end;
when Iir_Kind_Interface_Type_Declaration =>
if Get_Kind (Get_Parent (Inter)) = Iir_Kind_Entity_Declaration
then
declare
Act : Node;
Act_Typ : Type_Acc;
begin
Act := Get_Actual (Assoc);
if Get_Kind (Act) in Iir_Kinds_Denoting_Name then
Act := Get_Type (Act);
end if;
if Get_Kind (Act) in Iir_Kinds_Subtype_Definition then
Act_Typ := Synth_Subtype_Indication (Syn_Inst, Act);
else
Act_Typ := Get_Subtype_Object (Syn_Inst, Act);
end if;
Create_Subtype_Object
(Sub_Inst, Get_Type (Inter), Act_Typ);
end;
end if;
when Iir_Kind_Interface_Variable_Declaration
| Iir_Kind_Interface_File_Declaration
| Iir_Kind_Interface_Signal_Declaration
| Iir_Kind_Interface_Quantity_Declaration
| Iir_Kind_Interface_Terminal_Declaration =>
raise Internal_Error;
when Iir_Kinds_Interface_Subprogram_Declaration =>
raise Internal_Error;
end case;
Next_Association_Interface (Assoc, Assoc_Inter);
end loop;
end Elab_Generics_Association;
procedure Elab_Package_Declaration
(Parent_Inst : Synth_Instance_Acc; Pkg : Node)
is
Syn_Inst : Synth_Instance_Acc;
begin
if Is_Uninstantiated_Package (Pkg) then
-- Nothing to do (yet) for uninstantiated packages.
return;
end if;
Syn_Inst := Create_Package_Instance (Parent_Inst, Pkg);
Elab_Declarations (Syn_Inst, Get_Declaration_Chain (Pkg));
if Pkg = Vhdl.Std_Package.Standard_Package then
Elab_Convertible_Declarations (Syn_Inst);
end if;
end Elab_Package_Declaration;
procedure Elab_Package_Body
(Parent_Inst : Synth_Instance_Acc; Pkg : Node; Bod : Node)
is
Pkg_Inst : Synth_Instance_Acc;
begin
if Is_Uninstantiated_Package (Pkg) then
-- Nothing to do (yet) for uninstantiated packages.
return;
end if;
Pkg_Inst := Get_Package_Object (Parent_Inst, Pkg);
Elab_Declarations (Pkg_Inst, Get_Declaration_Chain (Bod));
end Elab_Package_Body;
procedure Elab_Package_Instantiation
(Parent_Inst : Synth_Instance_Acc; Pkg : Node)
is
Bod : constant Node := Get_Instance_Package_Body (Pkg);
Sub_Inst : Synth_Instance_Acc;
begin
Sub_Inst := Create_Package_Instance (Parent_Inst, Pkg);
Elab_Generics_Association
(Sub_Inst, Parent_Inst,
Get_Generic_Chain (Pkg), Get_Generic_Map_Aspect_Chain (Pkg));
Elab_Declarations (Sub_Inst, Get_Declaration_Chain (Pkg));
if Bod /= Null_Node then
-- Macro expanded package instantiation.
Elab_Declarations
(Sub_Inst, Get_Declaration_Chain (Bod));
else
-- Shared body
declare
Uninst : constant Node := Get_Uninstantiated_Package_Decl (Pkg);
Uninst_Bod : constant Node := Get_Package_Body (Uninst);
begin
Set_Uninstantiated_Scope (Sub_Inst, Uninst);
-- Synth declarations of (optional) body.
if Uninst_Bod /= Null_Node then
Elab_Declarations
(Sub_Inst, Get_Declaration_Chain (Uninst_Bod));
end if;
end;
end if;
end Elab_Package_Instantiation;
procedure Elab_Dependencies (Parent_Inst : Synth_Instance_Acc; Unit : Node)
is
Dep_List : constant Node_List := Get_Dependence_List (Unit);
Dep_It : List_Iterator;
Dep : Node;
Dep_Unit : Node;
begin
Dep_It := List_Iterate (Dep_List);
while Is_Valid (Dep_It) loop
Dep := Get_Element (Dep_It);
if Get_Kind (Dep) = Iir_Kind_Design_Unit
and then not Get_Elab_Flag (Dep)
then
Set_Elab_Flag (Dep, True);
Elab_Dependencies (Parent_Inst, Dep);
Dep_Unit := Get_Library_Unit (Dep);
case Iir_Kinds_Library_Unit (Get_Kind (Dep_Unit)) is
when Iir_Kind_Entity_Declaration =>
null;
when Iir_Kind_Configuration_Declaration =>
null;
when Iir_Kind_Context_Declaration =>
null;
when Iir_Kind_Package_Declaration =>
declare
Bod : constant Node := Get_Package_Body (Dep_Unit);
Bod_Unit : Node;
begin
Elab_Package_Declaration (Parent_Inst, Dep_Unit);
-- Do not try to elaborate math_real body: there are
-- functions with loop. Currently, try create signals,
-- which is not possible during package elaboration.
if Bod /= Null_Node then
Bod_Unit := Get_Design_Unit (Bod);
Elab_Dependencies (Parent_Inst, Bod_Unit);
Elab_Package_Body (Parent_Inst, Dep_Unit, Bod);
end if;
end;
when Iir_Kind_Package_Instantiation_Declaration =>
Elab_Package_Instantiation (Parent_Inst, Dep_Unit);
when Iir_Kind_Package_Body =>
null;
when Iir_Kind_Architecture_Body =>
null;
when Iir_Kinds_Verification_Unit =>
null;
when Iir_Kind_Foreign_Module =>
raise Internal_Error;
end case;
end if;
Next (Dep_It);
end loop;
end Elab_Dependencies;
procedure Apply_Block_Configuration (Cfg : Node; Blk : Node)
is
Item : Node;
begin
-- Be sure CFG applies to BLK.
pragma Assert (Get_Block_From_Block_Specification
(Get_Block_Specification (Cfg)) = Blk);
-- Clear_Instantiation_Configuration (Blk);
Item := Get_Configuration_Item_Chain (Cfg);
while Item /= Null_Node loop
case Get_Kind (Item) is
when Iir_Kind_Component_Configuration =>
declare
List : constant Iir_Flist :=
Get_Instantiation_List (Item);
El : Node;
Inst : Node;
begin
for I in Flist_First .. Flist_Last (List) loop
El := Get_Nth_Element (List, I);
Inst := Get_Named_Entity (El);
pragma Assert
(Get_Kind (Inst)
= Iir_Kind_Component_Instantiation_Statement);
pragma Assert
(Get_Component_Configuration (Inst) = Null_Node);
Set_Component_Configuration (Inst, Item);
end loop;
end;
when Iir_Kind_Block_Configuration =>
declare
Sub_Blk : constant Node := Get_Block_From_Block_Specification
(Get_Block_Specification (Item));
begin
case Get_Kind (Sub_Blk) is
when Iir_Kind_Generate_Statement_Body =>
-- Linked chain.
Set_Prev_Block_Configuration
(Item, Get_Generate_Block_Configuration (Sub_Blk));
Set_Generate_Block_Configuration (Sub_Blk, Item);
when Iir_Kind_Block_Statement =>
Set_Block_Block_Configuration (Sub_Blk, Item);
when others =>
Vhdl.Errors.Error_Kind
("apply_block_configuration(blk)", Sub_Blk);
end case;
end;
when others =>
Vhdl.Errors.Error_Kind ("apply_block_configuration", Item);
end case;
Item := Get_Chain (Item);
end loop;
end Apply_Block_Configuration;
function Elab_Port_Association_Type (Sub_Inst : Synth_Instance_Acc;
Syn_Inst : Synth_Instance_Acc;
Inter : Node;
Assoc : Node) return Type_Acc is
begin
if not Is_Fully_Constrained_Type (Get_Type (Inter)) then
-- TODO
-- Find the association for this interface
-- * if individual assoc: get type
-- * if whole assoc: get type from object.
if Assoc = Null_Node then
raise Internal_Error;
end if;
case Get_Kind (Assoc) is
when Iir_Kinds_Association_Element_By_Actual =>
return Exec_Type_Of_Object (Syn_Inst, Get_Actual (Assoc));
when Iir_Kind_Association_Element_By_Individual =>
return Synth_Subtype_Indication
(Syn_Inst, Get_Actual_Type (Assoc));
when Iir_Kind_Association_Element_Open =>
return Exec_Type_Of_Object
(Syn_Inst, Get_Default_Value (Inter));
when others =>
raise Internal_Error;
end case;
else
return Elab_Declaration_Type (Sub_Inst, Inter);
end if;
end Elab_Port_Association_Type;
procedure Elab_Ports_Association_Type (Sub_Inst : Synth_Instance_Acc;
Syn_Inst : Synth_Instance_Acc;
Inter_Chain : Node;
Assoc_Chain : Node)
is
Inter : Node;
Assoc : Node;
Assoc_Inter : Node;
Inter_Typ : Type_Acc;
begin
Assoc := Assoc_Chain;
Assoc_Inter := Inter_Chain;
while Is_Valid (Assoc) loop
Inter := Get_Association_Interface (Assoc, Assoc_Inter);
if Get_Whole_Association_Flag (Assoc) then
Inter_Typ := Elab_Port_Association_Type
(Sub_Inst, Syn_Inst, Inter, Assoc);
Create_Signal (Sub_Inst, Inter, Inter_Typ, null);
end if;
Next_Association_Interface (Assoc, Assoc_Inter);
end loop;
end Elab_Ports_Association_Type;
procedure Elab_Verification_Unit
(Syn_Inst : Synth_Instance_Acc; Unit : Node)
is
Unit_Inst : Synth_Instance_Acc;
Item : Node;
Last_Type : Node;
begin
Elab_Dependencies (Root_Instance, Get_Design_Unit (Unit));
Unit_Inst := Make_Elab_Instance (Syn_Inst, Unit, Config => Null_Node);
Add_Extra_Instance (Syn_Inst, Unit_Inst);
Apply_Block_Configuration
(Get_Verification_Block_Configuration (Unit), Unit);
Last_Type := Null_Node;
Item := Get_Vunit_Item_Chain (Unit);
while Item /= Null_Node loop
case Get_Kind (Item) is
when Iir_Kind_Psl_Default_Clock
| Iir_Kind_Psl_Declaration
| Iir_Kind_PSL_Inherit_Spec =>
null;
when Iir_Kind_Psl_Assert_Directive
| Iir_Kind_Psl_Assume_Directive
| Iir_Kind_Psl_Cover_Directive
| Iir_Kind_Psl_Restrict_Directive =>
null;
when Iir_Kind_Signal_Declaration
| Iir_Kind_Constant_Declaration
| Iir_Kind_Function_Declaration
| Iir_Kind_Procedure_Declaration
| Iir_Kind_Function_Body
| Iir_Kind_Procedure_Body
| Iir_Kind_Attribute_Declaration
| Iir_Kind_Attribute_Specification
| Iir_Kind_Object_Alias_Declaration
| Iir_Kind_Non_Object_Alias_Declaration
| Iir_Kind_Subtype_Declaration
| Iir_Kind_Type_Declaration
| Iir_Kind_Anonymous_Type_Declaration =>
Elab_Declaration (Unit_Inst, Item, False, Last_Type);
when Iir_Kinds_Concurrent_Signal_Assignment
| Iir_Kinds_Process_Statement
| Iir_Kinds_Generate_Statement
| Iir_Kind_Block_Statement
| Iir_Kind_Concurrent_Procedure_Call_Statement
| Iir_Kind_Component_Instantiation_Statement =>
Elab_Concurrent_Statement (Unit_Inst, Item);
when others =>
Error_Kind ("elab_verification_unit", Item);
end case;
Item := Get_Chain (Item);
end loop;
-- Recurse now.
Item := Get_Vunit_Item_Chain (Unit);
while Item /= Null_Node loop
if Get_Kind (Item) in Iir_Kinds_Concurrent_Statement then
Elab_Recurse_Instantiations_Statement (Unit_Inst, Item);
end if;
Item := Get_Chain (Item);
end loop;
end Elab_Verification_Unit;
procedure Elab_Verification_Units
(Syn_Inst : Synth_Instance_Acc; Parent : Node)
is
Unit : Node;
begin
Unit := Get_Bound_Vunit_Chain (Parent);
while Unit /= Null_Node loop
Elab_Verification_Unit (Syn_Inst, Unit);
Unit := Get_Bound_Vunit_Chain (Unit);
end loop;
end Elab_Verification_Units;
procedure Elab_Recurse_Instantiations_Statement
(Syn_Inst : Synth_Instance_Acc; Stmt : Node) is
begin
case Get_Kind (Stmt) is
when Iir_Kind_Concurrent_Simple_Signal_Assignment
| Iir_Kind_Concurrent_Conditional_Signal_Assignment
| Iir_Kind_Concurrent_Selected_Signal_Assignment
| Iir_Kind_Concurrent_Procedure_Call_Statement
| Iir_Kinds_Process_Statement =>
null;
when Iir_Kind_If_Generate_Statement =>
declare
Sub_Inst : constant Synth_Instance_Acc :=
Get_Sub_Instance (Syn_Inst, Stmt);
begin
if Sub_Inst /= null then
Elab_Recurse_Instantiations
(Sub_Inst, Get_Source_Scope (Sub_Inst));
end if;
end;
when Iir_Kind_For_Generate_Statement =>
declare
Iterator : constant Node :=
Get_Parameter_Specification (Stmt);
Bod : constant Node :=
Get_Generate_Statement_Body (Stmt);
It_Rng : constant Type_Acc :=
Get_Subtype_Object (Syn_Inst, Get_Type (Iterator));
Gen_Inst : constant Synth_Instance_Acc :=
Get_Sub_Instance (Syn_Inst, Stmt);
Sub_Inst : Synth_Instance_Acc;
begin
for I in 1 .. Get_Range_Length (It_Rng.Drange) loop
Sub_Inst := Get_Generate_Sub_Instance
(Gen_Inst, Positive (I));
Elab_Recurse_Instantiations (Sub_Inst, Bod);
end loop;
end;
when Iir_Kind_Component_Instantiation_Statement =>
if Is_Component_Instantiation (Stmt) then
declare
Comp_Inst : constant Synth_Instance_Acc :=
Get_Sub_Instance (Syn_Inst, Stmt);
Sub_Inst : constant Synth_Instance_Acc :=
Get_Component_Instance (Comp_Inst);
begin
if Sub_Inst /= null then
-- Nothing to do if the component is not bound.
Elab_Instance_Body (Sub_Inst);
end if;
end;
else
declare
Sub_Inst : constant Synth_Instance_Acc :=
Get_Sub_Instance (Syn_Inst, Stmt);
begin
Elab_Instance_Body (Sub_Inst);
end;
end if;
when Iir_Kind_Block_Statement =>
declare
Blk_Inst : constant Synth_Instance_Acc :=
Get_Sub_Instance (Syn_Inst, Stmt);
begin
Elab_Recurse_Instantiations (Blk_Inst, Stmt);
end;
when Iir_Kind_Psl_Default_Clock
| Iir_Kind_Psl_Declaration
| Iir_Kind_Psl_Restrict_Directive
| Iir_Kind_Psl_Assume_Directive
| Iir_Kind_Psl_Cover_Directive
| Iir_Kind_Psl_Assert_Directive
| Iir_Kind_Concurrent_Assertion_Statement =>
null;
when others =>
Error_Kind ("elab_recurse_instantiations_Statement", Stmt);
end case;
end Elab_Recurse_Instantiations_Statement;
-- Elaborate instantiations.
-- This cannot be done immediately like the other statements due to a
-- possible conflict with configurations.
-- Configurations are applied by Apply_Block_Configuration to the vhdl
-- nodes. If instantiations are handled immediately, in case of recursion,
-- the configuration may have already been applied to an instantiation and
-- therefore cannot be applied again.
-- To avoid this issue, statements are first elaborated and instances for
-- instantiations are created. The configuration is saved in the
-- instances. Then, instances are elaborated using the configuration
-- saved.
procedure Elab_Recurse_Instantiations
(Syn_Inst : Synth_Instance_Acc; Head : Node)
is
Stmt : Node;
begin
Stmt := Get_Concurrent_Statement_Chain (Head);
while Stmt /= Null_Node loop
Elab_Recurse_Instantiations_Statement (Syn_Inst, Stmt);
Stmt := Get_Chain (Stmt);
end loop;
end Elab_Recurse_Instantiations;
procedure Elab_Instance_Body (Syn_Inst : Synth_Instance_Acc)
is
Arch : constant Node := Get_Source_Scope (Syn_Inst);
Config : constant Node := Get_Instance_Config (Syn_Inst);
Entity : Node;
begin
if Get_Kind (Arch) = Iir_Kind_Foreign_Module then
return;
end if;
Entity := Get_Entity (Arch);
Apply_Block_Configuration (Config, Arch);
Elab.Vhdl_Files.Set_Design_Unit (Arch);
Elab_Declarations (Syn_Inst, Get_Declaration_Chain (Entity));
Elab_Concurrent_Statements
(Syn_Inst, Get_Concurrent_Statement_Chain (Entity));
Elab_Verification_Units (Syn_Inst, Entity);
Elab_Declarations (Syn_Inst, Get_Declaration_Chain (Arch));
Elab_Concurrent_Statements
(Syn_Inst, Get_Concurrent_Statement_Chain (Arch));
Elab_Recurse_Instantiations (Syn_Inst, Arch);
Elab_Verification_Units (Syn_Inst, Arch);
end Elab_Instance_Body;
procedure Elab_Direct_Instantiation_Statement
(Syn_Inst : Synth_Instance_Acc;
Stmt : Node;
Entity : Node;
Arch : Node;
Config : Node)
is
Sub_Inst : Synth_Instance_Acc;
begin
-- Elaborate generic + map aspect
Sub_Inst := Make_Elab_Instance (Syn_Inst, Arch, Config);
Create_Sub_Instance (Syn_Inst, Stmt, Sub_Inst);
Elab_Dependencies (Root_Instance, Get_Design_Unit (Entity));
Elab_Dependencies (Root_Instance, Get_Design_Unit (Arch));
Elab_Generics_Association (Sub_Inst, Syn_Inst,
Get_Generic_Chain (Entity),
Get_Generic_Map_Aspect_Chain (Stmt));
-- Elaborate port types.
Elab_Ports_Association_Type (Sub_Inst, Syn_Inst,
Get_Port_Chain (Entity),
Get_Port_Map_Aspect_Chain (Stmt));
if Is_Error (Sub_Inst) then
-- TODO: Free it?
return;
end if;
end Elab_Direct_Instantiation_Statement;
procedure Elab_Component_Instantiation_Statement
(Syn_Inst : Synth_Instance_Acc; Stmt : Node)
is
Component : constant Node :=
Get_Named_Entity (Get_Instantiated_Unit (Stmt));
Config : constant Node := Get_Component_Configuration (Stmt);
Bind : constant Node := Get_Binding_Indication (Config);
Aspect : Iir;
Comp_Inst : Synth_Instance_Acc;
Ent : Node;
Arch : Node;
Sub_Config : Node;
Sub_Inst : Synth_Instance_Acc;
begin
-- Create the sub-instance for the component
-- Elaborate generic + map aspect
Comp_Inst := Make_Elab_Instance (Syn_Inst, Component, Config);
Create_Sub_Instance (Syn_Inst, Stmt, Comp_Inst);
Elab_Generics_Association (Comp_Inst, Syn_Inst,
Get_Generic_Chain (Component),
Get_Generic_Map_Aspect_Chain (Stmt));
-- Create objects for the inputs and the outputs of the component,
-- assign inputs (that's nets) and create wires for outputs.
declare
Assoc : Node;
Assoc_Inter : Node;
Inter : Node;
Inter_Typ : Type_Acc;
begin
Assoc := Get_Port_Map_Aspect_Chain (Stmt);
Assoc_Inter := Get_Port_Chain (Component);
while Is_Valid (Assoc) loop
if Get_Whole_Association_Flag (Assoc) then
Inter := Get_Association_Interface (Assoc, Assoc_Inter);
Inter_Typ := Elab_Port_Association_Type
(Comp_Inst, Syn_Inst, Inter, Assoc);
Create_Signal (Comp_Inst, Assoc_Inter, Inter_Typ, null);
end if;
Next_Association_Interface (Assoc, Assoc_Inter);
end loop;
end;
Set_Component_Configuration (Stmt, Null_Node);
if Bind = Null_Iir then
-- No association.
Create_Component_Instance (Comp_Inst, null);
return;
end if;
Aspect := Get_Entity_Aspect (Bind);
-- Extract entity/architecture instantiated by the component.
case Get_Kind (Aspect) is
when Iir_Kind_Entity_Aspect_Entity =>
Ent := Get_Entity (Aspect);
Arch := Get_Architecture (Aspect);
when others =>
Vhdl.Errors.Error_Kind
("Elab_Component_Instantiation_Statement(2)", Aspect);
end case;
if Get_Kind (Ent) = Iir_Kind_Foreign_Module then
Sub_Inst := Make_Elab_Instance (Comp_Inst, Ent, Null_Node);
Create_Component_Instance (Comp_Inst, Sub_Inst);
Elab_Foreign_Instance (Sub_Inst, Comp_Inst, Bind, Ent);
return;
end if;
if Arch = Null_Node then
Arch := Libraries.Get_Latest_Architecture (Ent);
else
Arch := Get_Named_Entity (Arch);
end if;
Sub_Config := Get_Block_Configuration (Config);
if Sub_Config = Null_Node then
Sub_Config := Get_Library_Unit
(Get_Default_Configuration_Declaration (Arch));
Sub_Config := Get_Block_Configuration (Sub_Config);
end if;
Elab_Dependencies (Root_Instance, Get_Design_Unit (Ent));
Elab_Dependencies (Root_Instance, Get_Design_Unit (Arch));
-- Elaborate generic + map aspect for the entity instance.
Sub_Inst := Make_Elab_Instance (Comp_Inst, Arch, Sub_Config);
Create_Component_Instance (Comp_Inst, Sub_Inst);
Elab_Generics_Association (Sub_Inst, Comp_Inst,
Get_Generic_Chain (Ent),
Get_Generic_Map_Aspect_Chain (Bind));
Elab_Ports_Association_Type (Sub_Inst, Comp_Inst,
Get_Port_Chain (Ent),
Get_Port_Map_Aspect_Chain (Bind));
end Elab_Component_Instantiation_Statement;
procedure Elab_Design_Instantiation_Statement
(Syn_Inst : Synth_Instance_Acc; Stmt : Node)
is
Aspect : constant Iir := Get_Instantiated_Unit (Stmt);
Arch : Node;
Ent : Node;
Config : Node;
begin
-- Load configured entity + architecture
case Iir_Kinds_Entity_Aspect (Get_Kind (Aspect)) is
when Iir_Kind_Entity_Aspect_Entity =>
Arch := Get_Architecture (Aspect);
if Arch = Null_Node then
Arch := Libraries.Get_Latest_Architecture (Get_Entity (Aspect));
else
Arch := Strip_Denoting_Name (Arch);
end if;
Config := Get_Library_Unit
(Get_Default_Configuration_Declaration (Arch));
when Iir_Kind_Entity_Aspect_Configuration =>
Config := Get_Configuration (Aspect);
Arch := Get_Block_Specification (Get_Block_Configuration (Config));
when Iir_Kind_Entity_Aspect_Open =>
return;
end case;
Config := Get_Block_Configuration (Config);
Ent := Get_Entity (Arch);
Elab_Direct_Instantiation_Statement
(Syn_Inst, Stmt, Ent, Arch, Config);
end Elab_Design_Instantiation_Statement;
function Elab_Top_Unit (Config : Node) return Synth_Instance_Acc
is
Arch : Node;
Entity : Node;
Inter : Node;
Top_Inst : Synth_Instance_Acc;
begin
Arch := Get_Named_Entity
(Get_Block_Specification (Get_Block_Configuration (Config)));
Entity := Get_Entity (Arch);
-- Annotate units.
Vhdl.Annotations.Flag_Synthesis := True;
Vhdl.Annotations.Initialize_Annotate;
Vhdl.Annotations.Annotate (Vhdl.Std_Package.Std_Standard_Unit);
for I in Design_Units.First .. Design_Units.Last loop
Vhdl.Annotations.Annotate (Design_Units.Table (I));
end loop;
-- Start elaboration.
Make_Root_Instance;
Top_Inst := Make_Elab_Instance
(Root_Instance, Arch, Get_Block_Configuration (Config));
-- Save the current architecture, so that files can be open using a
-- path relative to the architecture filename.
Elab.Vhdl_Files.Set_Design_Unit (Arch);
Elab_Dependencies (Root_Instance, Get_Design_Unit (Entity));
Elab_Dependencies (Root_Instance, Get_Design_Unit (Arch));
-- Compute generics.
Inter := Get_Generic_Chain (Entity);
while Is_Valid (Inter) loop
declare
Val : Valtyp;
Inter_Typ : Type_Acc;
begin
Inter_Typ := Elab_Declaration_Type (Top_Inst, Inter);
Val := Exec_Expression_With_Type
(Top_Inst, Get_Default_Value (Inter), Inter_Typ);
pragma Assert (Is_Static (Val.Val));
Create_Object (Top_Inst, Inter, Val);
end;
Inter := Get_Chain (Inter);
end loop;
-- Elaborate port types.
-- FIXME: what about unconstrained ports ? Get the type from the
-- association.
Inter := Get_Port_Chain (Entity);
while Is_Valid (Inter) loop
if not Is_Fully_Constrained_Type (Get_Type (Inter)) then
-- TODO
raise Internal_Error;
end if;
declare
Inter_Typ : Type_Acc;
begin
Inter_Typ := Elab_Declaration_Type (Top_Inst, Inter);
Create_Signal (Top_Inst, Inter, Inter_Typ, null);
end;
Inter := Get_Chain (Inter);
end loop;
Elab_Instance_Body (Top_Inst);
-- Clear elab_flag
for I in Design_Units.First .. Design_Units.Last loop
Set_Elab_Flag (Design_Units.Table (I), False);
end loop;
return Top_Inst;
end Elab_Top_Unit;
end Elab.Vhdl_Insts;
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