-- Iir to ortho translator. -- Copyright (C) 2002 - 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 GCC; see the file COPYING. If not, write to the Free -- Software Foundation, 59 Temple Place - Suite 330, Boston, MA -- 02111-1307, USA. with Vhdl.Configuration; with Errorout; use Errorout; with Vhdl.Errors; use Vhdl.Errors; with Vhdl.Std_Package; use Vhdl.Std_Package; with Vhdl.Utils; use Vhdl.Utils; with Libraries; with Flags; with Vhdl.Sem; with Vhdl.Sem_Lib; use Vhdl.Sem_Lib; with Trans.Chap1; with Trans.Chap2; with Trans.Chap6; with Trans.Rtis; with Trans.Helpers2; use Trans.Helpers2; with Translation; use Translation; with Trans_Decls; use Trans_Decls; package body Trans.Chap12 is Elab_Nbr_Pkgs : Natural; Pkgs_Arr : O_Dnode; -- Declare top RTIARRAY and ghdl_ELABORATE. procedure Gen_Elab_Decls is Inter_List : O_Inter_List; Arr_Type : O_Tnode; begin -- We need to create code. Set_Global_Storage (O_Storage_Private); Rtis.Generate_Top (Elab_Nbr_Pkgs); declare Cst : O_Dnode; pragma Unreferenced (Cst); begin Cst := Create_String (Flags.Flag_String, Get_Identifier ("__ghdl_flag_string"), O_Storage_Public); end; -- Create the array of RTIs for packages (as a variable, initialized -- during elaboration). Arr_Type := New_Constrained_Array_Type (Rtis.Ghdl_Rti_Array, New_Unsigned_Literal (Ghdl_Index_Type, Unsigned_64 (Elab_Nbr_Pkgs))); New_Var_Decl (Pkgs_Arr, Get_Identifier ("__ghdl_top_RTIARRAY"), O_Storage_Private, Arr_Type); -- The elaboration entry point. Start_Procedure_Decl (Inter_List, Get_Identifier ("__ghdl_ELABORATE"), O_Storage_Public); Finish_Subprogram_Decl (Inter_List, Ghdl_Elaborate); end Gen_Elab_Decls; procedure Call_Elab_Decls (Arch : Iir; Arch_Instance : O_Enode) is Assoc : O_Assoc_List; begin -- Set top instances and RTI. -- Do it before the elaboration code, since it may be used to -- diagnose errors. -- Call ghdl_rti_add_top Start_Association (Assoc, Ghdl_Rti_Add_Top); New_Association (Assoc, New_Lit (New_Unsigned_Literal (Ghdl_Index_Type, Unsigned_64 (Elab_Nbr_Pkgs)))); New_Association (Assoc, New_Address (New_Obj (Pkgs_Arr), Rtis.Ghdl_Rti_Arr_Acc)); New_Association (Assoc, Rtis.New_Rti_Address (Get_Info (Arch).Block_Rti_Const)); New_Association (Assoc, New_Convert_Ov (Arch_Instance, Ghdl_Ptr_Type)); New_Procedure_Call (Assoc); -- Add std.standard rti Start_Association (Assoc, Ghdl_Rti_Add_Package); New_Association (Assoc, Rtis.New_Rti_Address (Get_Info (Standard_Package).Package_Rti_Const)); New_Procedure_Call (Assoc); end Call_Elab_Decls; -- Create __ghdl_ELABORATE procedure Gen_Main (Entity : Iir_Entity_Declaration; Arch : Iir_Architecture_Body; Config_Subprg : O_Dnode) is Entity_Info : constant Block_Info_Acc := Get_Info (Entity); Arch_Info : constant Block_Info_Acc := Get_Info (Arch); Assoc : O_Assoc_List; Instance : O_Dnode; Arch_Instance : O_Dnode; Mark : Id_Mark_Type; begin Start_Subprogram_Body (Ghdl_Elaborate); New_Var_Decl (Arch_Instance, Wki_Arch_Instance, O_Storage_Local, Arch_Info.Block_Decls_Ptr_Type); New_Var_Decl (Instance, Wki_Instance, O_Storage_Local, Entity_Info.Block_Decls_Ptr_Type); -- Allocate instance for the architecture. New_Assign_Stmt (New_Obj (Arch_Instance), Gen_Alloc (Alloc_System, New_Lit (Get_Scope_Size (Arch_Info.Block_Scope)), Arch_Info.Block_Decls_Ptr_Type)); -- Set the top instance. New_Assign_Stmt (New_Obj (Instance), New_Address (New_Selected_Acc_Value (New_Obj (Arch_Instance), Arch_Info.Block_Parent_Field), Entity_Info.Block_Decls_Ptr_Type)); -- Clear parent field of entity link. New_Assign_Stmt (New_Selected_Element (New_Selected_Acc_Value (New_Obj (Instance), Entity_Info.Block_Link_Field), Rtis.Ghdl_Entity_Link_Parent), New_Lit (New_Null_Access (Rtis.Ghdl_Component_Link_Acc))); Call_Elab_Decls (Arch, New_Obj_Value (Arch_Instance)); Gen_Filename (Get_Design_File (Get_Design_Unit (Entity))); -- Elab package dependences of top entity (so that default -- expressions can be evaluated). Start_Association (Assoc, Entity_Info.Block_Elab_Pkg_Subprg); New_Procedure_Call (Assoc); -- Init instance: assign default values to generic and create ports. -- Allow user override of generics. Set_Scope_Via_Param_Ptr (Entity_Info.Block_Scope, Instance); Push_Identifier_Prefix (Mark, ""); Chap1.Translate_Entity_Init_Generics (Entity); Start_Association (Assoc, Ghdl_Init_Top_Generics); New_Procedure_Call (Assoc); Chap1.Translate_Entity_Init_Ports (Entity); -- Elab instance. for K in Elab_Kind loop Start_Association (Assoc, Arch_Info.Block_Elab_Subprg (K)); New_Association (Assoc, New_Obj_Value (Instance)); New_Procedure_Call (Assoc); end loop; -- Configure instance. Start_Association (Assoc, Config_Subprg); New_Association (Assoc, New_Obj_Value (Arch_Instance)); New_Procedure_Call (Assoc); Pop_Identifier_Prefix (Mark); Clear_Scope (Entity_Info.Block_Scope); Finish_Subprogram_Body; Current_Filename_Node := O_Dnode_Null; end Gen_Main; procedure Gen_Last_Arch (Entity : Iir_Entity_Declaration) is Entity_Info : Block_Info_Acc; Arch : Iir_Architecture_Body; Arch_Info : Block_Info_Acc; Lib : Iir_Library_Declaration; Lib_Mark, Entity_Mark, Arch_Mark : Id_Mark_Type; Config : Iir_Configuration_Declaration; Config_Info : Config_Info_Acc; Const : O_Dnode; Instance : O_Dnode; Inter_List : O_Inter_List; Constr : O_Assoc_List; Subprg : O_Dnode; begin Arch := Libraries.Get_Latest_Architecture (Entity); if Arch = Null_Iir then Error_Msg_Elab ("no architecture for %n", +Entity); end if; Arch_Info := Get_Info (Arch); if Arch_Info = null then -- Nothing to do here, since the architecture is not used. return; end if; Entity_Info := Get_Info (Entity); -- Create trampoline for elab, default_architecture -- re-create instsize. Reset_Identifier_Prefix; Lib := Get_Library (Get_Design_File (Get_Design_Unit (Entity))); Push_Identifier_Prefix (Lib_Mark, Get_Identifier (Lib)); Push_Identifier_Prefix (Entity_Mark, Get_Identifier (Entity)); Push_Identifier_Prefix (Arch_Mark, "LASTARCH"); -- Instance size. New_Const_Decl (Const, Create_Identifier ("INSTSIZE"), O_Storage_Public, Ghdl_Index_Type); Start_Init_Value (Const); Finish_Init_Value (Const, Get_Scope_Size (Arch_Info.Block_Scope)); -- Elaborator. for K in Elab_Kind loop Start_Procedure_Decl (Inter_List, Create_Elab_Identifier (K), O_Storage_Public); New_Interface_Decl (Inter_List, Instance, Wki_Instance, Entity_Info.Block_Decls_Ptr_Type); Finish_Subprogram_Decl (Inter_List, Subprg); Start_Subprogram_Body (Subprg); Start_Association (Constr, Arch_Info.Block_Elab_Subprg (K)); New_Association (Constr, New_Obj_Value (Instance)); New_Procedure_Call (Constr); Finish_Subprogram_Body; end loop; -- Default config. Config := Get_Default_Configuration_Declaration (Arch); if Is_Valid (Config) then Config_Info := Get_Info (Get_Library_Unit (Config)); if Config_Info /= null then -- Do not create a trampoline for the default_config if it is not -- used. Start_Procedure_Decl (Inter_List, Create_Identifier ("DEFAULT_CONFIG"), O_Storage_Public); New_Interface_Decl (Inter_List, Instance, Wki_Instance, Arch_Info.Block_Decls_Ptr_Type); Finish_Subprogram_Decl (Inter_List, Subprg); Start_Subprogram_Body (Subprg); Start_Association (Constr, Config_Info.Config_Subprg); New_Association (Constr, New_Obj_Value (Instance)); New_Procedure_Call (Constr); Finish_Subprogram_Body; end if; end if; Pop_Identifier_Prefix (Arch_Mark); Pop_Identifier_Prefix (Entity_Mark); Pop_Identifier_Prefix (Lib_Mark); end Gen_Last_Arch; procedure Gen_Dummy_Default_Config (Arch : Iir_Architecture_Body) is Entity : Iir_Entity_Declaration; Lib : Iir_Library_Declaration; Lib_Mark, Entity_Mark, Sep_Mark, Arch_Mark : Id_Mark_Type; Inter_List : O_Inter_List; Subprg : O_Dnode; begin Reset_Identifier_Prefix; Entity := Get_Entity (Arch); Lib := Get_Library (Get_Design_File (Get_Design_Unit (Arch))); Push_Identifier_Prefix (Lib_Mark, Get_Identifier (Lib)); Push_Identifier_Prefix (Entity_Mark, Get_Identifier (Entity)); Push_Identifier_Prefix (Sep_Mark, "ARCH"); Push_Identifier_Prefix (Arch_Mark, Get_Identifier (Arch)); -- Elaborator. Start_Procedure_Decl (Inter_List, Create_Identifier ("DEFAULT_CONFIG"), O_Storage_Public); Finish_Subprogram_Decl (Inter_List, Subprg); Start_Subprogram_Body (Subprg); Chap6.Gen_Program_Error (Arch, Chap6.Prg_Err_Dummy_Config); Finish_Subprogram_Body; Pop_Identifier_Prefix (Arch_Mark); Pop_Identifier_Prefix (Sep_Mark); Pop_Identifier_Prefix (Entity_Mark); Pop_Identifier_Prefix (Lib_Mark); end Gen_Dummy_Default_Config; procedure Gen_Dummy_Entity_Declaration (Entity : Iir_Entity_Declaration) is Lib : Iir_Library_Declaration; Lib_Mark, Entity_Mark, Arch_Mark : Id_Mark_Type; Const : O_Dnode; Instance : O_Dnode; Inter_List : O_Inter_List; Subprg : O_Dnode; begin -- Create trampoline for elab, default_architecture -- re-create instsize. Reset_Identifier_Prefix; Lib := Get_Library (Get_Design_File (Get_Design_Unit (Entity))); Push_Identifier_Prefix (Lib_Mark, Get_Identifier (Lib)); Push_Identifier_Prefix (Entity_Mark, Get_Identifier (Entity)); Push_Identifier_Prefix (Arch_Mark, "LASTARCH"); -- Instance size. New_Const_Decl (Const, Create_Identifier ("INSTSIZE"), O_Storage_Public, Ghdl_Index_Type); Start_Init_Value (Const); Finish_Init_Value (Const, Ghdl_Index_0); -- Elaborator. for K in Elab_Kind loop Start_Procedure_Decl (Inter_List, Create_Elab_Identifier (K), O_Storage_Public); New_Interface_Decl (Inter_List, Instance, Wki_Instance, Ghdl_Ptr_Type); Finish_Subprogram_Decl (Inter_List, Subprg); Start_Subprogram_Body (Subprg); Finish_Subprogram_Body; end loop; -- Default config. Start_Procedure_Decl (Inter_List, Create_Identifier ("DEFAULT_CONFIG"), O_Storage_Public); New_Interface_Decl (Inter_List, Instance, Wki_Instance, Ghdl_Ptr_Type); Finish_Subprogram_Decl (Inter_List, Subprg); Start_Subprogram_Body (Subprg); Finish_Subprogram_Body; Pop_Identifier_Prefix (Arch_Mark); Pop_Identifier_Prefix (Entity_Mark); Pop_Identifier_Prefix (Lib_Mark); end Gen_Dummy_Entity_Declaration; -- Generate dummy subprograms for a package declaration. procedure Gen_Dummy_Package_Declaration (Unit : Iir_Design_Unit) is Pkg : Iir_Package_Declaration; Lib : Iir_Library_Declaration; Lib_Mark, Pkg_Mark : Id_Mark_Type; Decl : Iir; begin Load_Design_Unit (Unit, Null_Iir); Pkg := Get_Library_Unit (Unit); Reset_Identifier_Prefix; Lib := Get_Library (Get_Design_File (Get_Design_Unit (Pkg))); Push_Identifier_Prefix (Lib_Mark, Get_Identifier (Lib)); Push_Identifier_Prefix (Pkg_Mark, Get_Identifier (Pkg)); if Get_Need_Body (Pkg) then Decl := Get_Declaration_Chain (Pkg); while Decl /= Null_Iir loop case Get_Kind (Decl) is when Iir_Kind_Function_Declaration | Iir_Kind_Procedure_Declaration => -- Generate empty body. -- Never a second spec, as this is within a package -- declaration. pragma Assert (not Is_Second_Subprogram_Specification (Decl)); if not Get_Foreign_Flag (Decl) then declare Mark : Id_Mark_Type; Inter_List : O_Inter_List; Proc : O_Dnode; begin Chap2.Push_Subprg_Identifier (Decl, Mark); Start_Procedure_Decl (Inter_List, Create_Identifier, O_Storage_Public); Finish_Subprogram_Decl (Inter_List, Proc); Start_Subprogram_Body (Proc); Finish_Subprogram_Body; Pop_Identifier_Prefix (Mark); end; end if; when others => null; end case; Decl := Get_Chain (Decl); end loop; end if; -- Create the body elaborator. declare Inter_List : O_Inter_List; Proc : O_Dnode; begin Start_Procedure_Decl (Inter_List, Create_Identifier ("ELAB_BODY"), O_Storage_Public); Finish_Subprogram_Decl (Inter_List, Proc); Start_Subprogram_Body (Proc); Finish_Subprogram_Body; end; Pop_Identifier_Prefix (Pkg_Mark); Pop_Identifier_Prefix (Lib_Mark); end Gen_Dummy_Package_Declaration; -- Write to file FILELIST all the files that are needed to link the design. procedure Gen_Stubs is use Vhdl.Configuration; -- Add all dependences of UNIT. -- UNIT is not used, but added during link. procedure Add_Unit_Dependences (Unit : Iir_Design_Unit) is Dep_List : Iir_List; Dep : Iir; Dep_Unit : Iir_Design_Unit; Dep_It : List_Iterator; Lib_Unit : Iir; begin -- Load the unit in memory to compute the dependence list. Load_Design_Unit (Unit, Null_Iir); Update_Node_Infos; Set_Elab_Flag (Unit, True); Design_Units.Append (Unit); if Flag_Rti then Rtis.Generate_Library (Get_Library (Get_Design_File (Unit)), True); end if; Lib_Unit := Get_Library_Unit (Unit); case Get_Kind (Lib_Unit) is when Iir_Kind_Package_Declaration => -- The body may be required due to incomplete constant -- declarations, or to call to a subprogram. declare Pack_Body : Iir; begin Pack_Body := Libraries.Find_Secondary_Unit (Unit, Null_Identifier); if Pack_Body /= Null_Iir then Add_Unit_Dependences (Pack_Body); else Gen_Dummy_Package_Declaration (Unit); end if; end; when Iir_Kind_Entity_Declaration => Gen_Dummy_Entity_Declaration (Lib_Unit); when Iir_Kind_Architecture_Body => Gen_Dummy_Default_Config (Lib_Unit); when others => null; end case; Dep_List := Get_Dependence_List (Unit); Dep_It := List_Iterate (Dep_List); while Is_Valid (Dep_It) loop Dep := Get_Element (Dep_It); Dep_Unit := Libraries.Find_Design_Unit (Dep); if Dep_Unit = Null_Iir then Error_Msg_Elab ("could not find design unit %n", +Dep); elsif not Get_Elab_Flag (Dep_Unit) then Add_Unit_Dependences (Dep_Unit); end if; Next (Dep_It); end loop; end Add_Unit_Dependences; -- Add not yet added units of FILE. procedure Add_File_Units (File : Iir_Design_File) is Unit : Iir_Design_Unit; begin Unit := Get_First_Design_Unit (File); while Unit /= Null_Iir loop if not Get_Elab_Flag (Unit) then -- Unit is not used for the design, but is present in the final -- link. As it may import dependencies, generate dummy -- subprograms and variables for these dependencies. Add_Unit_Dependences (Unit); end if; Unit := Get_Chain (Unit); end loop; end Add_File_Units; File : Iir_Design_File; Unit : Iir_Design_Unit; J : Natural; begin -- Set elab flags on units, and remove it on design files. for I in Design_Units.First .. Design_Units.Last loop Unit := Design_Units.Table (I); Set_Elab_Flag (Unit, True); File := Get_Design_File (Unit); Set_Elab_Flag (File, False); end loop; J := Design_Units.First; while J <= Design_Units.Last loop Unit := Design_Units.Table (J); File := Get_Design_File (Unit); if not Get_Elab_Flag (File) then Set_Elab_Flag (File, True); -- Add dependences of unused design units, otherwise the object -- link case failed. Add_File_Units (File); end if; J := J + 1; end loop; end Gen_Stubs; procedure Elaborate (Config : Iir_Design_Unit; Whole : Boolean) is use Vhdl.Configuration; Unit : Iir_Design_Unit; Lib_Unit : Iir; Config_Lib : Iir_Configuration_Declaration; Entity : Iir_Entity_Declaration; Arch : Iir_Architecture_Body; Conf_Info : Config_Info_Acc; Last_Design_Unit : Natural; begin Config_Lib := Get_Library_Unit (Config); Entity := Get_Entity (Config_Lib); Arch := Strip_Denoting_Name (Get_Block_Specification (Get_Block_Configuration (Config_Lib))); -- Be sure the entity can be at the top of a design. Check_Entity_Declaration_Top (Entity, True); -- If all design units are loaded, late semantic checks can be -- performed. if Flag_Load_All_Design_Units then for I in Design_Units.First .. Design_Units.Last loop Unit := Design_Units.Table (I); Vhdl.Sem.Sem_Analysis_Checks_List (Unit, False); -- There cannot be remaining checks to do. pragma Assert (Get_Analysis_Checks_List (Unit) = Null_Iir_List); end loop; end if; -- Return now in case of errors. if Nbr_Errors /= 0 then return; end if; if Flags.Verbose then Report_Msg (Msgid_Note, Elaboration, No_Source_Coord, "List of units in the hierarchy design:"); for I in Design_Units.First .. Design_Units.Last loop Unit := Design_Units.Table (I); Lib_Unit := Get_Library_Unit (Unit); Report_Msg (Msgid_Note, Elaboration, No_Source_Coord, " %n", (1 => +Lib_Unit)); end loop; end if; if Whole then -- In compile-and-elaborate mode, do not generate code for -- unused subprograms. -- FIXME: should be improved by creating a span-tree. Flag_Discard_Unused := True; Flag_Discard_Unused_Implicit := True; end if; -- Generate_Library add infos, therefore the info array must be -- adjusted. Update_Node_Infos; Rtis.Generate_Library (Libraries.Std_Library, True); Translate_Standard (Whole); -- Std.Standard has no body and is always in the closure. Exclude it -- from the stub and filelist generation. Set_Elab_Flag (Std_Standard_Unit, True); -- Translate all configurations needed. -- Also, set the ELAB_FLAG on package with body. for I in Design_Units.First .. Design_Units.Last loop Unit := Design_Units.Table (I); Lib_Unit := Get_Library_Unit (Unit); if Whole then -- In whole compilation mode, force to generate RTIS of -- libraries. Rtis.Generate_Library (Get_Library (Get_Design_File (Unit)), True); end if; case Get_Kind (Lib_Unit) is when Iir_Kind_Configuration_Declaration => if Get_Identifier (Lib_Unit) /= Null_Identifier then -- Always generate code for configuration. -- Because default binding may be changed between analysis -- and elaboration. Translate (Unit, True); end if; when Iir_Kind_Entity_Declaration | Iir_Kind_Architecture_Body | Iir_Kind_Package_Declaration | Iir_Kind_Package_Instantiation_Declaration => -- For package spec, mark it as 'body is not present', this -- flag will be set below when the body is translated. Set_Elab_Flag (Unit, False); Translate (Unit, Whole); when Iir_Kind_Package_Body => -- Mark the spec with 'body is present' flag. Set_Elab_Flag (Get_Design_Unit (Get_Package (Lib_Unit)), True); Translate (Unit, Whole); when Iir_Kind_Context_Declaration => null; when others => Error_Kind ("elaborate", Lib_Unit); end case; end loop; for I in Design_Units.First .. Design_Units.Last loop Unit := Design_Units.Table (I); Lib_Unit := Get_Library_Unit (Unit); if Get_Kind (Lib_Unit) = Iir_Kind_Configuration_Declaration and then Get_Identifier (Lib_Unit) = Null_Identifier then -- Because of possible indirect recursion, translate default -- configuration at the end. Translate (Unit, True); end if; end loop; -- Generate code to elaboration body-less package. -- -- When a package is analyzed, we don't know whether there is body -- or not. Therefore, we assume there is always a body, and will -- elaborate the body (which elaborates its spec). If a package -- has no body, create the body elaboration procedure. for I in Design_Units.First .. Design_Units.Last loop Unit := Design_Units.Table (I); Lib_Unit := Get_Library_Unit (Unit); case Get_Kind (Lib_Unit) is when Iir_Kind_Package_Declaration => if not Get_Elab_Flag (Unit) then Chap2.Elab_Package_Body (Lib_Unit, Null_Iir); end if; when Iir_Kind_Entity_Declaration => Gen_Last_Arch (Lib_Unit); when Iir_Kind_Architecture_Body | Iir_Kind_Package_Body | Iir_Kind_Configuration_Declaration | Iir_Kind_Package_Instantiation_Declaration | Iir_Kind_Context_Declaration => null; when others => Error_Kind ("elaborate(2)", Lib_Unit); end case; end loop; Gen_Elab_Decls; -- Create main code. Conf_Info := Get_Info (Config_Lib); Gen_Main (Entity, Arch, Conf_Info.Config_Subprg); -- Index of the last design unit, required by the design. Last_Design_Unit := Design_Units.Last; -- A design file may contain unused units that depends on other files. -- In order to have all symbols resolved, also add unused packages and -- generate stubs for referenced (but unused) entities and -- configurations. if not Whole then Gen_Stubs; end if; -- Disp list of files needed. if Flags.Verbose then Report_Msg (Msgid_Note, Elaboration, No_Source_Coord, "List of units not used:"); for I in Last_Design_Unit + 1 .. Design_Units.Last loop Unit := Design_Units.Table (I); Lib_Unit := Get_Library_Unit (Unit); Report_Msg (Msgid_Note, Elaboration, No_Source_Coord, " %n", (1 => +Lib_Unit)); end loop; end if; end Elaborate; end Trans.Chap12;