-- 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 . with Types; use Types; with Libraries; with Areapools; with Vhdl.Utils; use Vhdl.Utils; with Vhdl.Std_Package; with Vhdl.Configuration; use Vhdl.Configuration; with Vhdl.Errors; use Vhdl.Errors; with Elab.Memtype; with Elab.Vhdl_Annotations; 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; with Synth.Vhdl_Expr; use Synth.Vhdl_Expr; with Synth.Vhdl_Stmts; 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 use Elab.Memtype; Marker : Mark_Type; Inter : Node; Inter_Type : Type_Acc; Assoc : Node; Assoc_Inter : Node; Actual : Node; Formal_Typ : Type_Acc; Formal_Base : Valtyp; Formal_Offs : Value_Offsets; Val : Valtyp; begin Mark_Expr_Pool (Marker); 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); Formal_Base := No_Valtyp; case Get_Kind (Assoc) is when Iir_Kind_Association_Element_Open => Actual := Get_Default_Value (Inter); Val := Synth_Expression_With_Type (Sub_Inst, Actual, Inter_Type); when Iir_Kind_Association_Element_By_Expression => Actual := Get_Actual (Assoc); if Get_Whole_Association_Flag (Assoc) then Formal_Typ := Inter_Type; else declare use Synth.Vhdl_Stmts; Formal : constant Node := Get_Formal (Assoc); Dyn : Dyn_Name; begin Synth_Assignment_Prefix (Syn_Inst, Sub_Inst, Formal, Formal_Base, Formal_Typ, Formal_Offs, Dyn); pragma Assert (Dyn = No_Dyn_Name); end; end if; Val := Synth_Expression_With_Type (Syn_Inst, Actual, Formal_Typ); when Iir_Kind_Association_Element_By_Individual => Val.Typ := Synth_Subtype_Indication (Syn_Inst, Get_Actual_Type (Assoc)); Val := Create_Value_Memory (Val.Typ, Expr_Pool'Access); when others => raise Internal_Error; end case; if Get_Whole_Association_Flag (Assoc) then Val := Exec_Subtype_Conversion (Val, Inter_Type, True, Assoc); end if; 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; if Get_Whole_Association_Flag (Assoc) then if Val /= No_Valtyp then Val := Unshare (Val, Global_Pool'Access); Val.Typ := Unshare (Val.Typ, Global_Pool'Access); end if; Create_Object (Sub_Inst, Inter, Val); else -- Modify the generic. Copy_Memory (Formal_Base.Val.Mem + Formal_Offs.Mem_Off, Get_Memory (Val), Formal_Typ.Sz); end if; Release_Expr_Pool (Marker); 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 => 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; Act_Typ := Unshare (Act_Typ, Instance_Pool); Create_Subtype_Object (Sub_Inst, Get_Type (Inter), Act_Typ); Release_Expr_Pool (Marker); end; 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 => null; 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_Configuration_Declaration (Parent_Inst : Synth_Instance_Acc; Conf : Node) is Syn_Inst : Synth_Instance_Acc; begin Syn_Inst := Create_Package_Instance (Parent_Inst, Conf); Elab_Declarations (Syn_Inst, Get_Declaration_Chain (Conf)); end Elab_Configuration_Declaration; 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 => Elab_Configuration_Declaration (Parent_Inst, Dep_Unit); 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 Marker : Mark_Type; Inter_Typ : Type_Acc; Val : Valtyp; Res : Type_Acc; 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; Mark_Expr_Pool (Marker); if Get_Kind (Assoc) = Iir_Kind_Association_Element_By_Expression and then not Get_Inertial_Flag (Assoc) then -- For expression: just compute the expression and associate. Inter_Typ := Elab_Declaration_Type (Sub_Inst, Inter); Val := Synth_Expression_With_Type (Syn_Inst, Get_Actual (Assoc), Inter_Typ); Res := Val.Typ; else case Iir_Kinds_Association_Element_Parameters (Get_Kind (Assoc)) is when Iir_Kinds_Association_Element_By_Actual => Res := Exec_Name_Subtype (Syn_Inst, Get_Actual (Assoc)); when Iir_Kind_Association_Element_By_Individual => Res := Synth_Subtype_Indication (Syn_Inst, Get_Actual_Type (Assoc)); when Iir_Kind_Association_Element_Open => Res := Exec_Name_Subtype (Syn_Inst, Get_Default_Value (Inter)); end case; end if; Res := Unshare (Res, Global_Pool'Access); Release_Expr_Pool (Marker); return Res; 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); 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, Null_Node, 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_Kind_Concurrent_Break_Statement | Iir_Kind_Simple_Simultaneous_Statement | Iir_Kinds_Process_Statement => null; when Iir_Kind_If_Generate_Statement | Iir_Kind_Case_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; pragma Assert (Areapools.Is_Empty (Expr_Pool)); 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)); pragma Assert (Areapools.Is_Empty (Expr_Pool)); Elab_Verification_Units (Syn_Inst, Entity); pragma Assert (Areapools.Is_Empty (Expr_Pool)); Elab_Declarations (Syn_Inst, Get_Declaration_Chain (Arch)); pragma Assert (Areapools.Is_Empty (Expr_Pool)); Elab_Concurrent_Statements (Syn_Inst, Get_Concurrent_Statement_Chain (Arch)); pragma Assert (Areapools.Is_Empty (Expr_Pool)); Elab_Recurse_Instantiations (Syn_Inst, Arch); pragma Assert (Areapools.Is_Empty (Expr_Pool)); Elab_Verification_Units (Syn_Inst, Arch); pragma Assert (Areapools.Is_Empty (Expr_Pool)); 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, Stmt, Arch, Config); Create_Sub_Instance (Syn_Inst, Stmt, Sub_Inst); pragma Assert (Is_Expr_Pool_Empty); Elab_Dependencies (Root_Instance, Get_Design_Unit (Entity)); Elab_Dependencies (Root_Instance, Get_Design_Unit (Arch)); pragma Assert (Is_Expr_Pool_Empty); Elab_Generics_Association (Sub_Inst, Syn_Inst, Get_Generic_Chain (Entity), Get_Generic_Map_Aspect_Chain (Stmt)); pragma Assert (Is_Expr_Pool_Empty); -- Elaborate port types. Elab_Ports_Association_Type (Sub_Inst, Syn_Inst, Get_Port_Chain (Entity), Get_Port_Map_Aspect_Chain (Stmt)); pragma Assert (Is_Expr_Pool_Empty); 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 pragma Assert (Is_Expr_Pool_Empty); -- Create the sub-instance for the component -- Elaborate generic + map aspect Comp_Inst := Make_Elab_Instance (Syn_Inst, Stmt, Component, Config); Create_Sub_Instance (Syn_Inst, Stmt, Comp_Inst); pragma Assert (Is_Expr_Pool_Empty); Elab_Generics_Association (Comp_Inst, Syn_Inst, Get_Generic_Chain (Component), Get_Generic_Map_Aspect_Chain (Stmt)); pragma Assert (Is_Expr_Pool_Empty); -- 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, Inter, Inter_Typ); end if; Next_Association_Interface (Assoc, Assoc_Inter); end loop; end; Set_Component_Configuration (Stmt, Null_Node); pragma Assert (Is_Expr_Pool_Empty); 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 Iir_Kinds_Entity_Aspect (Get_Kind (Aspect)) is when Iir_Kind_Entity_Aspect_Entity => Ent := Get_Entity (Aspect); Arch := Get_Architecture (Aspect); Sub_Config := Get_Block_Configuration (Config); when Iir_Kind_Entity_Aspect_Configuration => Sub_Config := Get_Block_Configuration (Get_Configuration (Aspect)); Arch := Get_Block_Specification (Sub_Config); Ent := Get_Entity (Get_Named_Entity (Arch)); when Iir_Kind_Entity_Aspect_Open => Create_Component_Instance (Comp_Inst, null); return; end case; if Get_Kind (Ent) = Iir_Kind_Foreign_Module then Sub_Inst := Make_Elab_Instance (Comp_Inst, Stmt, 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; 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, Stmt, 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)); pragma Assert (Is_Expr_Pool_Empty); 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); pragma Assert (Is_Expr_Pool_Empty); 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. Elab.Vhdl_Annotations.Initialize_Annotate; Elab.Vhdl_Annotations.Annotate (Vhdl.Std_Package.Std_Standard_Unit); for I in Design_Units.First .. Design_Units.Last loop Elab.Vhdl_Annotations.Annotate (Design_Units.Table (I)); end loop; -- Use global memory. Instance_Pool := Global_Pool'Access; pragma Assert (Is_Expr_Pool_Empty); -- Start elaboration. Make_Root_Instance; Top_Inst := Make_Elab_Instance (Root_Instance, Null_Node, 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)); Elab_Configuration_Declaration (Root_Instance, Config); pragma Assert (Is_Expr_Pool_Empty); -- Compute generics. Inter := Get_Generic_Chain (Entity); while Is_Valid (Inter) loop declare Em : Mark_Type; Val : Valtyp; Inter_Typ : Type_Acc; Defval : Node; begin Mark_Expr_Pool (Em); Inter_Typ := Elab_Declaration_Type (Top_Inst, Inter); Defval := Get_Default_Value (Inter); if Defval /= Null_Node then Val := Synth_Expression_With_Type (Top_Inst, Defval, Inter_Typ); else -- Only for simulation, expect override. Val := Create_Value_Default (Inter_Typ); end if; pragma Assert (Is_Static (Val.Val)); Val := Unshare (Val, Instance_Pool); Val.Typ := Unshare_Type_Instance (Val.Typ, Inter_Typ); Create_Object (Top_Inst, Inter, Val); Release_Expr_Pool (Em); end; Inter := Get_Chain (Inter); end loop; pragma Assert (Is_Expr_Pool_Empty); -- 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 Is_Fully_Constrained_Type (Get_Type (Inter)) then declare Inter_Typ : Type_Acc; begin Inter_Typ := Elab_Declaration_Type (Top_Inst, Inter); Create_Signal (Top_Inst, Inter, Inter_Typ); end; else declare Def : constant Node := Get_Default_Value (Inter); Marker : Mark_Type; Inter_Typ : Type_Acc; Val : Valtyp; begin Mark_Expr_Pool (Marker); pragma Assert (Def /= Null_Node); Inter_Typ := Elab_Declaration_Type (Top_Inst, Inter); Val := Synth_Expression_With_Type (Top_Inst, Def, Inter_Typ); Val := Unshare (Val, Instance_Pool); Val.Typ := Unshare_Type_Instance (Val.Typ, Inter_Typ); Release_Expr_Pool (Marker); Create_Signal (Top_Inst, Inter, Val.Typ); end; end if; Inter := Get_Chain (Inter); end loop; pragma Assert (Is_Expr_Pool_Empty); Elab_Instance_Body (Top_Inst); pragma Assert (Areapools.Is_Empty (Expr_Pool)); Instance_Pool := null; -- 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;