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jeremybenn |
------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- E X P _ A T A G --
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-- --
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-- S p e c --
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-- --
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-- Copyright (C) 2006-2009, Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
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-- for more details. You should have received a copy of the GNU General --
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-- Public License distributed with GNAT; see file COPYING3. If not, go to --
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-- http://www.gnu.org/licenses for a complete copy of the license. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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with Atree; use Atree;
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with Einfo; use Einfo;
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with Elists; use Elists;
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with Exp_Util; use Exp_Util;
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with Namet; use Namet;
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with Nlists; use Nlists;
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with Nmake; use Nmake;
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with Rtsfind; use Rtsfind;
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with Sinfo; use Sinfo;
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with Sem_Aux; use Sem_Aux;
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with Sem_Util; use Sem_Util;
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with Stand; use Stand;
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with Snames; use Snames;
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with Tbuild; use Tbuild;
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package body Exp_Atag is
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-----------------------
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-- Local Subprograms --
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-----------------------
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function Build_DT
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(Loc : Source_Ptr;
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Tag_Node : Node_Id) return Node_Id;
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-- Build code that displaces the Tag to reference the base of the wrapper
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-- record
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--
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-- Generates:
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-- To_Dispatch_Table_Ptr
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-- (To_Address (Tag_Node) - Tag_Node.Prims_Ptr'Position);
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function Build_TSD
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(Loc : Source_Ptr;
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Tag_Node_Addr : Node_Id) return Node_Id;
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-- Build code that retrieves the address of the record containing the Type
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-- Specific Data generated by GNAT.
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--
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-- Generate: To_Type_Specific_Data_Ptr
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-- (To_Addr_Ptr (Tag_Node_Addr - Typeinfo_Offset).all);
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------------------------------------------------
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-- Build_Common_Dispatching_Select_Statements --
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------------------------------------------------
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procedure Build_Common_Dispatching_Select_Statements
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(Loc : Source_Ptr;
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DT_Ptr : Entity_Id;
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Stmts : List_Id)
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is
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begin
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-- Generate:
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-- C := get_prim_op_kind (tag! (<type>VP), S);
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-- where C is the out parameter capturing the call kind and S is the
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-- dispatch table slot number.
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Append_To (Stmts,
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Make_Assignment_Statement (Loc,
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Name =>
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Make_Identifier (Loc, Name_uC),
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Expression =>
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Make_Function_Call (Loc,
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Name => New_Occurrence_Of (RTE (RE_Get_Prim_Op_Kind), Loc),
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Parameter_Associations => New_List (
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Unchecked_Convert_To (RTE (RE_Tag),
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New_Reference_To (DT_Ptr, Loc)),
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Make_Identifier (Loc, Name_uS)))));
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-- Generate:
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-- if C = POK_Procedure
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-- or else C = POK_Protected_Procedure
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-- or else C = POK_Task_Procedure;
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-- then
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-- F := True;
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-- return;
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-- where F is the out parameter capturing the status of a potential
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-- entry call.
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Append_To (Stmts,
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Make_If_Statement (Loc,
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Condition =>
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Make_Or_Else (Loc,
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Left_Opnd =>
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Make_Op_Eq (Loc,
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Left_Opnd =>
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Make_Identifier (Loc, Name_uC),
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Right_Opnd =>
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New_Reference_To (RTE (RE_POK_Procedure), Loc)),
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Right_Opnd =>
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Make_Or_Else (Loc,
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Left_Opnd =>
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Make_Op_Eq (Loc,
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Left_Opnd =>
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Make_Identifier (Loc, Name_uC),
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Right_Opnd =>
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New_Reference_To (RTE (
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RE_POK_Protected_Procedure), Loc)),
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Right_Opnd =>
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Make_Op_Eq (Loc,
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Left_Opnd =>
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Make_Identifier (Loc, Name_uC),
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Right_Opnd =>
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New_Reference_To (RTE (
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RE_POK_Task_Procedure), Loc)))),
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Then_Statements =>
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New_List (
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Make_Assignment_Statement (Loc,
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Name => Make_Identifier (Loc, Name_uF),
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Expression => New_Reference_To (Standard_True, Loc)),
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Make_Simple_Return_Statement (Loc))));
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end Build_Common_Dispatching_Select_Statements;
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-------------------------
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-- Build_CW_Membership --
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-------------------------
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procedure Build_CW_Membership
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(Loc : Source_Ptr;
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Obj_Tag_Node : in out Node_Id;
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Typ_Tag_Node : Node_Id;
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Related_Nod : Node_Id;
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New_Node : out Node_Id)
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is
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Tag_Addr : constant Entity_Id := Make_Defining_Identifier (Loc,
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New_Internal_Name ('D'));
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Obj_TSD : constant Entity_Id := Make_Defining_Identifier (Loc,
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New_Internal_Name ('D'));
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Typ_TSD : constant Entity_Id := Make_Defining_Identifier (Loc,
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New_Internal_Name ('D'));
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Index : constant Entity_Id := Make_Defining_Identifier (Loc,
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New_Internal_Name ('D'));
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begin
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-- Generate:
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-- Tag_Addr : constant Tag := Address!(Obj_Tag);
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-- Obj_TSD : constant Type_Specific_Data_Ptr
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-- := Build_TSD (Tag_Addr);
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-- Typ_TSD : constant Type_Specific_Data_Ptr
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-- := Build_TSD (Address!(Typ_Tag));
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-- Index : constant Integer := Obj_TSD.Idepth - Typ_TSD.Idepth
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-- Index > 0 and then Obj_TSD.Tags_Table (Index) = Typ'Tag
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Insert_Action (Related_Nod,
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Make_Object_Declaration (Loc,
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Defining_Identifier => Tag_Addr,
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Constant_Present => True,
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Object_Definition => New_Reference_To (RTE (RE_Address), Loc),
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Expression => Unchecked_Convert_To
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(RTE (RE_Address), Obj_Tag_Node)));
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-- Unchecked_Convert_To relocates Obj_Tag_Node and therefore we must
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-- update it.
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Obj_Tag_Node := Expression (Expression (Parent (Tag_Addr)));
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Insert_Action (Related_Nod,
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Make_Object_Declaration (Loc,
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Defining_Identifier => Obj_TSD,
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Constant_Present => True,
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Object_Definition => New_Reference_To
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(RTE (RE_Type_Specific_Data_Ptr), Loc),
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Expression => Build_TSD (Loc, New_Reference_To (Tag_Addr, Loc))));
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Insert_Action (Related_Nod,
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Make_Object_Declaration (Loc,
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Defining_Identifier => Typ_TSD,
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Constant_Present => True,
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Object_Definition => New_Reference_To
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(RTE (RE_Type_Specific_Data_Ptr), Loc),
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Expression => Build_TSD (Loc,
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Unchecked_Convert_To (RTE (RE_Address),
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Typ_Tag_Node))));
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Insert_Action (Related_Nod,
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Make_Object_Declaration (Loc,
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Defining_Identifier => Index,
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Constant_Present => True,
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Object_Definition => New_Occurrence_Of (Standard_Integer, Loc),
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Expression =>
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Make_Op_Subtract (Loc,
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Left_Opnd =>
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Make_Selected_Component (Loc,
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Prefix => New_Reference_To (Obj_TSD, Loc),
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Selector_Name =>
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New_Reference_To
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(RTE_Record_Component (RE_Idepth), Loc)),
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Right_Opnd =>
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Make_Selected_Component (Loc,
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Prefix => New_Reference_To (Typ_TSD, Loc),
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Selector_Name =>
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New_Reference_To
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(RTE_Record_Component (RE_Idepth), Loc)))));
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New_Node :=
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Make_And_Then (Loc,
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Left_Opnd =>
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Make_Op_Ge (Loc,
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Left_Opnd => New_Occurrence_Of (Index, Loc),
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Right_Opnd => Make_Integer_Literal (Loc, Uint_0)),
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Right_Opnd =>
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Make_Op_Eq (Loc,
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Left_Opnd =>
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Make_Indexed_Component (Loc,
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Prefix =>
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Make_Selected_Component (Loc,
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Prefix => New_Reference_To (Obj_TSD, Loc),
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Selector_Name =>
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New_Reference_To
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(RTE_Record_Component (RE_Tags_Table), Loc)),
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Expressions =>
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New_List (New_Occurrence_Of (Index, Loc))),
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Right_Opnd => Typ_Tag_Node));
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end Build_CW_Membership;
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--------------
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-- Build_DT --
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--------------
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function Build_DT
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(Loc : Source_Ptr;
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Tag_Node : Node_Id) return Node_Id
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is
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begin
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return
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Make_Function_Call (Loc,
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Name => New_Reference_To (RTE (RE_DT), Loc),
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Parameter_Associations => New_List (
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Unchecked_Convert_To (RTE (RE_Tag), Tag_Node)));
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end Build_DT;
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----------------------------
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-- Build_Get_Access_Level --
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----------------------------
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function Build_Get_Access_Level
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(Loc : Source_Ptr;
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Tag_Node : Node_Id) return Node_Id
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is
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begin
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return
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Make_Selected_Component (Loc,
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Prefix =>
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Build_TSD (Loc,
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Unchecked_Convert_To (RTE (RE_Address), Tag_Node)),
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Selector_Name =>
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New_Reference_To
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(RTE_Record_Component (RE_Access_Level), Loc));
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end Build_Get_Access_Level;
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------------------------------------------
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-- Build_Get_Predefined_Prim_Op_Address --
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------------------------------------------
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procedure Build_Get_Predefined_Prim_Op_Address
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(Loc : Source_Ptr;
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Position : Uint;
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Tag_Node : in out Node_Id;
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New_Node : out Node_Id)
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is
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Ctrl_Tag : Node_Id;
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begin
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| 296 |
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Ctrl_Tag := Unchecked_Convert_To (RTE (RE_Address), Tag_Node);
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| 297 |
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-- Unchecked_Convert_To relocates the controlling tag node and therefore
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-- we must update it.
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Tag_Node := Expression (Ctrl_Tag);
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-- Build code that retrieves the address of the dispatch table
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-- containing the predefined Ada primitives:
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--
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-- Generate:
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| 307 |
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-- To_Predef_Prims_Table_Ptr
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-- (To_Addr_Ptr (To_Address (Tag) - Predef_Prims_Offset).all);
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| 310 |
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New_Node :=
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Make_Indexed_Component (Loc,
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Prefix =>
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Unchecked_Convert_To (RTE (RE_Predef_Prims_Table_Ptr),
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Make_Explicit_Dereference (Loc,
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| 315 |
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Unchecked_Convert_To (RTE (RE_Addr_Ptr),
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| 316 |
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Make_Function_Call (Loc,
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Name =>
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| 318 |
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Make_Expanded_Name (Loc,
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| 319 |
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Chars => Name_Op_Subtract,
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| 320 |
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Prefix =>
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| 321 |
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New_Reference_To
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| 322 |
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(RTU_Entity (System_Storage_Elements), Loc),
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| 323 |
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Selector_Name =>
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| 324 |
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Make_Identifier (Loc,
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| 325 |
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Chars => Name_Op_Subtract)),
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| 326 |
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Parameter_Associations => New_List (
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| 327 |
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Ctrl_Tag,
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| 328 |
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New_Reference_To (RTE (RE_DT_Predef_Prims_Offset),
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| 329 |
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Loc)))))),
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| 330 |
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Expressions =>
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| 331 |
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New_List (Make_Integer_Literal (Loc, Position)));
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end Build_Get_Predefined_Prim_Op_Address;
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| 333 |
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| 334 |
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-------------------------
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| 335 |
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-- Build_Inherit_Prims --
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| 336 |
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-------------------------
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| 337 |
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| 338 |
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function Build_Inherit_Prims
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| 339 |
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(Loc : Source_Ptr;
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| 340 |
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Typ : Entity_Id;
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| 341 |
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Old_Tag_Node : Node_Id;
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| 342 |
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New_Tag_Node : Node_Id;
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| 343 |
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Num_Prims : Nat) return Node_Id
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| 344 |
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is
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| 345 |
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begin
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| 346 |
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if RTE_Available (RE_DT) then
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| 347 |
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return
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| 348 |
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Make_Assignment_Statement (Loc,
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| 349 |
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Name =>
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| 350 |
|
|
Make_Slice (Loc,
|
| 351 |
|
|
Prefix =>
|
| 352 |
|
|
Make_Selected_Component (Loc,
|
| 353 |
|
|
Prefix =>
|
| 354 |
|
|
Build_DT (Loc, New_Tag_Node),
|
| 355 |
|
|
Selector_Name =>
|
| 356 |
|
|
New_Reference_To
|
| 357 |
|
|
(RTE_Record_Component (RE_Prims_Ptr), Loc)),
|
| 358 |
|
|
Discrete_Range =>
|
| 359 |
|
|
Make_Range (Loc,
|
| 360 |
|
|
Low_Bound => Make_Integer_Literal (Loc, 1),
|
| 361 |
|
|
High_Bound => Make_Integer_Literal (Loc, Num_Prims))),
|
| 362 |
|
|
|
| 363 |
|
|
Expression =>
|
| 364 |
|
|
Make_Slice (Loc,
|
| 365 |
|
|
Prefix =>
|
| 366 |
|
|
Make_Selected_Component (Loc,
|
| 367 |
|
|
Prefix =>
|
| 368 |
|
|
Build_DT (Loc, Old_Tag_Node),
|
| 369 |
|
|
Selector_Name =>
|
| 370 |
|
|
New_Reference_To
|
| 371 |
|
|
(RTE_Record_Component (RE_Prims_Ptr), Loc)),
|
| 372 |
|
|
Discrete_Range =>
|
| 373 |
|
|
Make_Range (Loc,
|
| 374 |
|
|
Low_Bound => Make_Integer_Literal (Loc, 1),
|
| 375 |
|
|
High_Bound => Make_Integer_Literal (Loc, Num_Prims))));
|
| 376 |
|
|
else
|
| 377 |
|
|
return
|
| 378 |
|
|
Make_Assignment_Statement (Loc,
|
| 379 |
|
|
Name =>
|
| 380 |
|
|
Make_Slice (Loc,
|
| 381 |
|
|
Prefix =>
|
| 382 |
|
|
Unchecked_Convert_To
|
| 383 |
|
|
(Node (Last_Elmt (Access_Disp_Table (Typ))),
|
| 384 |
|
|
New_Tag_Node),
|
| 385 |
|
|
Discrete_Range =>
|
| 386 |
|
|
Make_Range (Loc,
|
| 387 |
|
|
Low_Bound => Make_Integer_Literal (Loc, 1),
|
| 388 |
|
|
High_Bound => Make_Integer_Literal (Loc, Num_Prims))),
|
| 389 |
|
|
|
| 390 |
|
|
Expression =>
|
| 391 |
|
|
Make_Slice (Loc,
|
| 392 |
|
|
Prefix =>
|
| 393 |
|
|
Unchecked_Convert_To
|
| 394 |
|
|
(Node (Last_Elmt (Access_Disp_Table (Typ))),
|
| 395 |
|
|
Old_Tag_Node),
|
| 396 |
|
|
Discrete_Range =>
|
| 397 |
|
|
Make_Range (Loc,
|
| 398 |
|
|
Low_Bound => Make_Integer_Literal (Loc, 1),
|
| 399 |
|
|
High_Bound => Make_Integer_Literal (Loc, Num_Prims))));
|
| 400 |
|
|
end if;
|
| 401 |
|
|
end Build_Inherit_Prims;
|
| 402 |
|
|
|
| 403 |
|
|
-------------------------------
|
| 404 |
|
|
-- Build_Get_Prim_Op_Address --
|
| 405 |
|
|
-------------------------------
|
| 406 |
|
|
|
| 407 |
|
|
procedure Build_Get_Prim_Op_Address
|
| 408 |
|
|
(Loc : Source_Ptr;
|
| 409 |
|
|
Typ : Entity_Id;
|
| 410 |
|
|
Position : Uint;
|
| 411 |
|
|
Tag_Node : in out Node_Id;
|
| 412 |
|
|
New_Node : out Node_Id)
|
| 413 |
|
|
is
|
| 414 |
|
|
New_Prefix : Node_Id;
|
| 415 |
|
|
|
| 416 |
|
|
begin
|
| 417 |
|
|
pragma Assert
|
| 418 |
|
|
(Position <= DT_Entry_Count (First_Tag_Component (Typ)));
|
| 419 |
|
|
|
| 420 |
|
|
-- At the end of the Access_Disp_Table list we have the type
|
| 421 |
|
|
-- declaration required to convert the tag into a pointer to
|
| 422 |
|
|
-- the prims_ptr table (see Freeze_Record_Type).
|
| 423 |
|
|
|
| 424 |
|
|
New_Prefix :=
|
| 425 |
|
|
Unchecked_Convert_To
|
| 426 |
|
|
(Node (Last_Elmt (Access_Disp_Table (Typ))), Tag_Node);
|
| 427 |
|
|
|
| 428 |
|
|
-- Unchecked_Convert_To relocates the controlling tag node and therefore
|
| 429 |
|
|
-- we must update it.
|
| 430 |
|
|
|
| 431 |
|
|
Tag_Node := Expression (New_Prefix);
|
| 432 |
|
|
|
| 433 |
|
|
New_Node :=
|
| 434 |
|
|
Make_Indexed_Component (Loc,
|
| 435 |
|
|
Prefix => New_Prefix,
|
| 436 |
|
|
Expressions => New_List (Make_Integer_Literal (Loc, Position)));
|
| 437 |
|
|
end Build_Get_Prim_Op_Address;
|
| 438 |
|
|
|
| 439 |
|
|
-----------------------------
|
| 440 |
|
|
-- Build_Get_Transportable --
|
| 441 |
|
|
-----------------------------
|
| 442 |
|
|
|
| 443 |
|
|
function Build_Get_Transportable
|
| 444 |
|
|
(Loc : Source_Ptr;
|
| 445 |
|
|
Tag_Node : Node_Id) return Node_Id
|
| 446 |
|
|
is
|
| 447 |
|
|
begin
|
| 448 |
|
|
return
|
| 449 |
|
|
Make_Selected_Component (Loc,
|
| 450 |
|
|
Prefix =>
|
| 451 |
|
|
Build_TSD (Loc,
|
| 452 |
|
|
Unchecked_Convert_To (RTE (RE_Address), Tag_Node)),
|
| 453 |
|
|
Selector_Name =>
|
| 454 |
|
|
New_Reference_To
|
| 455 |
|
|
(RTE_Record_Component (RE_Transportable), Loc));
|
| 456 |
|
|
end Build_Get_Transportable;
|
| 457 |
|
|
|
| 458 |
|
|
------------------------------------
|
| 459 |
|
|
-- Build_Inherit_Predefined_Prims --
|
| 460 |
|
|
------------------------------------
|
| 461 |
|
|
|
| 462 |
|
|
function Build_Inherit_Predefined_Prims
|
| 463 |
|
|
(Loc : Source_Ptr;
|
| 464 |
|
|
Old_Tag_Node : Node_Id;
|
| 465 |
|
|
New_Tag_Node : Node_Id) return Node_Id
|
| 466 |
|
|
is
|
| 467 |
|
|
begin
|
| 468 |
|
|
return
|
| 469 |
|
|
Make_Assignment_Statement (Loc,
|
| 470 |
|
|
Name =>
|
| 471 |
|
|
Make_Slice (Loc,
|
| 472 |
|
|
Prefix =>
|
| 473 |
|
|
Make_Explicit_Dereference (Loc,
|
| 474 |
|
|
Unchecked_Convert_To (RTE (RE_Predef_Prims_Table_Ptr),
|
| 475 |
|
|
Make_Explicit_Dereference (Loc,
|
| 476 |
|
|
Unchecked_Convert_To (RTE (RE_Addr_Ptr),
|
| 477 |
|
|
New_Tag_Node)))),
|
| 478 |
|
|
Discrete_Range => Make_Range (Loc,
|
| 479 |
|
|
Make_Integer_Literal (Loc, Uint_1),
|
| 480 |
|
|
New_Reference_To (RTE (RE_Max_Predef_Prims), Loc))),
|
| 481 |
|
|
|
| 482 |
|
|
Expression =>
|
| 483 |
|
|
Make_Slice (Loc,
|
| 484 |
|
|
Prefix =>
|
| 485 |
|
|
Make_Explicit_Dereference (Loc,
|
| 486 |
|
|
Unchecked_Convert_To (RTE (RE_Predef_Prims_Table_Ptr),
|
| 487 |
|
|
Make_Explicit_Dereference (Loc,
|
| 488 |
|
|
Unchecked_Convert_To (RTE (RE_Addr_Ptr),
|
| 489 |
|
|
Old_Tag_Node)))),
|
| 490 |
|
|
Discrete_Range =>
|
| 491 |
|
|
Make_Range (Loc,
|
| 492 |
|
|
Make_Integer_Literal (Loc, 1),
|
| 493 |
|
|
New_Reference_To (RTE (RE_Max_Predef_Prims), Loc))));
|
| 494 |
|
|
end Build_Inherit_Predefined_Prims;
|
| 495 |
|
|
|
| 496 |
|
|
-------------------------
|
| 497 |
|
|
-- Build_Offset_To_Top --
|
| 498 |
|
|
-------------------------
|
| 499 |
|
|
|
| 500 |
|
|
function Build_Offset_To_Top
|
| 501 |
|
|
(Loc : Source_Ptr;
|
| 502 |
|
|
This_Node : Node_Id) return Node_Id
|
| 503 |
|
|
is
|
| 504 |
|
|
Tag_Node : Node_Id;
|
| 505 |
|
|
|
| 506 |
|
|
begin
|
| 507 |
|
|
Tag_Node :=
|
| 508 |
|
|
Make_Explicit_Dereference (Loc,
|
| 509 |
|
|
Unchecked_Convert_To (RTE (RE_Tag_Ptr), This_Node));
|
| 510 |
|
|
|
| 511 |
|
|
return
|
| 512 |
|
|
Make_Explicit_Dereference (Loc,
|
| 513 |
|
|
Unchecked_Convert_To (RTE (RE_Offset_To_Top_Ptr),
|
| 514 |
|
|
Make_Function_Call (Loc,
|
| 515 |
|
|
Name =>
|
| 516 |
|
|
Make_Expanded_Name (Loc,
|
| 517 |
|
|
Chars => Name_Op_Subtract,
|
| 518 |
|
|
Prefix => New_Reference_To
|
| 519 |
|
|
(RTU_Entity (System_Storage_Elements), Loc),
|
| 520 |
|
|
Selector_Name => Make_Identifier (Loc,
|
| 521 |
|
|
Chars => Name_Op_Subtract)),
|
| 522 |
|
|
Parameter_Associations => New_List (
|
| 523 |
|
|
Unchecked_Convert_To (RTE (RE_Address), Tag_Node),
|
| 524 |
|
|
New_Reference_To (RTE (RE_DT_Offset_To_Top_Offset),
|
| 525 |
|
|
Loc)))));
|
| 526 |
|
|
end Build_Offset_To_Top;
|
| 527 |
|
|
|
| 528 |
|
|
------------------------------------------
|
| 529 |
|
|
-- Build_Set_Predefined_Prim_Op_Address --
|
| 530 |
|
|
------------------------------------------
|
| 531 |
|
|
|
| 532 |
|
|
function Build_Set_Predefined_Prim_Op_Address
|
| 533 |
|
|
(Loc : Source_Ptr;
|
| 534 |
|
|
Tag_Node : Node_Id;
|
| 535 |
|
|
Position : Uint;
|
| 536 |
|
|
Address_Node : Node_Id) return Node_Id
|
| 537 |
|
|
is
|
| 538 |
|
|
begin
|
| 539 |
|
|
return
|
| 540 |
|
|
Make_Assignment_Statement (Loc,
|
| 541 |
|
|
Name =>
|
| 542 |
|
|
Make_Indexed_Component (Loc,
|
| 543 |
|
|
Prefix =>
|
| 544 |
|
|
Unchecked_Convert_To (RTE (RE_Predef_Prims_Table_Ptr),
|
| 545 |
|
|
Make_Explicit_Dereference (Loc,
|
| 546 |
|
|
Unchecked_Convert_To (RTE (RE_Addr_Ptr), Tag_Node))),
|
| 547 |
|
|
Expressions =>
|
| 548 |
|
|
New_List (Make_Integer_Literal (Loc, Position))),
|
| 549 |
|
|
|
| 550 |
|
|
Expression => Address_Node);
|
| 551 |
|
|
end Build_Set_Predefined_Prim_Op_Address;
|
| 552 |
|
|
|
| 553 |
|
|
-------------------------------
|
| 554 |
|
|
-- Build_Set_Prim_Op_Address --
|
| 555 |
|
|
-------------------------------
|
| 556 |
|
|
|
| 557 |
|
|
function Build_Set_Prim_Op_Address
|
| 558 |
|
|
(Loc : Source_Ptr;
|
| 559 |
|
|
Typ : Entity_Id;
|
| 560 |
|
|
Tag_Node : Node_Id;
|
| 561 |
|
|
Position : Uint;
|
| 562 |
|
|
Address_Node : Node_Id) return Node_Id
|
| 563 |
|
|
is
|
| 564 |
|
|
Ctrl_Tag : Node_Id := Tag_Node;
|
| 565 |
|
|
New_Node : Node_Id;
|
| 566 |
|
|
|
| 567 |
|
|
begin
|
| 568 |
|
|
Build_Get_Prim_Op_Address (Loc, Typ, Position, Ctrl_Tag, New_Node);
|
| 569 |
|
|
|
| 570 |
|
|
return
|
| 571 |
|
|
Make_Assignment_Statement (Loc,
|
| 572 |
|
|
Name => New_Node,
|
| 573 |
|
|
Expression => Address_Node);
|
| 574 |
|
|
end Build_Set_Prim_Op_Address;
|
| 575 |
|
|
|
| 576 |
|
|
-----------------------------
|
| 577 |
|
|
-- Build_Set_Size_Function --
|
| 578 |
|
|
-----------------------------
|
| 579 |
|
|
|
| 580 |
|
|
function Build_Set_Size_Function
|
| 581 |
|
|
(Loc : Source_Ptr;
|
| 582 |
|
|
Tag_Node : Node_Id;
|
| 583 |
|
|
Size_Func : Entity_Id) return Node_Id is
|
| 584 |
|
|
begin
|
| 585 |
|
|
pragma Assert (Chars (Size_Func) = Name_uSize
|
| 586 |
|
|
and then RTE_Record_Component_Available (RE_Size_Func));
|
| 587 |
|
|
return
|
| 588 |
|
|
Make_Assignment_Statement (Loc,
|
| 589 |
|
|
Name =>
|
| 590 |
|
|
Make_Selected_Component (Loc,
|
| 591 |
|
|
Prefix =>
|
| 592 |
|
|
Build_TSD (Loc,
|
| 593 |
|
|
Unchecked_Convert_To (RTE (RE_Address), Tag_Node)),
|
| 594 |
|
|
Selector_Name =>
|
| 595 |
|
|
New_Reference_To
|
| 596 |
|
|
(RTE_Record_Component (RE_Size_Func), Loc)),
|
| 597 |
|
|
Expression =>
|
| 598 |
|
|
Unchecked_Convert_To (RTE (RE_Size_Ptr),
|
| 599 |
|
|
Make_Attribute_Reference (Loc,
|
| 600 |
|
|
Prefix => New_Reference_To (Size_Func, Loc),
|
| 601 |
|
|
Attribute_Name => Name_Unrestricted_Access)));
|
| 602 |
|
|
end Build_Set_Size_Function;
|
| 603 |
|
|
|
| 604 |
|
|
------------------------------------
|
| 605 |
|
|
-- Build_Set_Static_Offset_To_Top --
|
| 606 |
|
|
------------------------------------
|
| 607 |
|
|
|
| 608 |
|
|
function Build_Set_Static_Offset_To_Top
|
| 609 |
|
|
(Loc : Source_Ptr;
|
| 610 |
|
|
Iface_Tag : Node_Id;
|
| 611 |
|
|
Offset_Value : Node_Id) return Node_Id is
|
| 612 |
|
|
begin
|
| 613 |
|
|
return
|
| 614 |
|
|
Make_Assignment_Statement (Loc,
|
| 615 |
|
|
Make_Explicit_Dereference (Loc,
|
| 616 |
|
|
Unchecked_Convert_To (RTE (RE_Offset_To_Top_Ptr),
|
| 617 |
|
|
Make_Function_Call (Loc,
|
| 618 |
|
|
Name =>
|
| 619 |
|
|
Make_Expanded_Name (Loc,
|
| 620 |
|
|
Chars => Name_Op_Subtract,
|
| 621 |
|
|
Prefix => New_Reference_To
|
| 622 |
|
|
(RTU_Entity (System_Storage_Elements), Loc),
|
| 623 |
|
|
Selector_Name => Make_Identifier (Loc,
|
| 624 |
|
|
Chars => Name_Op_Subtract)),
|
| 625 |
|
|
Parameter_Associations => New_List (
|
| 626 |
|
|
Unchecked_Convert_To (RTE (RE_Address), Iface_Tag),
|
| 627 |
|
|
New_Reference_To (RTE (RE_DT_Offset_To_Top_Offset),
|
| 628 |
|
|
Loc))))),
|
| 629 |
|
|
Offset_Value);
|
| 630 |
|
|
end Build_Set_Static_Offset_To_Top;
|
| 631 |
|
|
|
| 632 |
|
|
---------------
|
| 633 |
|
|
-- Build_TSD --
|
| 634 |
|
|
---------------
|
| 635 |
|
|
|
| 636 |
|
|
function Build_TSD
|
| 637 |
|
|
(Loc : Source_Ptr;
|
| 638 |
|
|
Tag_Node_Addr : Node_Id) return Node_Id is
|
| 639 |
|
|
begin
|
| 640 |
|
|
return
|
| 641 |
|
|
Unchecked_Convert_To (RTE (RE_Type_Specific_Data_Ptr),
|
| 642 |
|
|
Make_Explicit_Dereference (Loc,
|
| 643 |
|
|
Prefix => Unchecked_Convert_To (RTE (RE_Addr_Ptr),
|
| 644 |
|
|
Make_Function_Call (Loc,
|
| 645 |
|
|
Name =>
|
| 646 |
|
|
Make_Expanded_Name (Loc,
|
| 647 |
|
|
Chars => Name_Op_Subtract,
|
| 648 |
|
|
Prefix =>
|
| 649 |
|
|
New_Reference_To
|
| 650 |
|
|
(RTU_Entity (System_Storage_Elements), Loc),
|
| 651 |
|
|
Selector_Name =>
|
| 652 |
|
|
Make_Identifier (Loc,
|
| 653 |
|
|
Chars => Name_Op_Subtract)),
|
| 654 |
|
|
|
| 655 |
|
|
Parameter_Associations => New_List (
|
| 656 |
|
|
Tag_Node_Addr,
|
| 657 |
|
|
New_Reference_To
|
| 658 |
|
|
(RTE (RE_DT_Typeinfo_Ptr_Size), Loc))))));
|
| 659 |
|
|
end Build_TSD;
|
| 660 |
|
|
|
| 661 |
|
|
end Exp_Atag;
|
