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--- GHDL Run Time (GRT) - RTI address handling.
--- 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.
---
--- As a special exception, if other files instantiate generics from this
--- unit, or you link this unit with other files to produce an executable,
--- this unit does not by itself cause the resulting executable to be
--- covered by the GNU General Public License. This exception does not
--- however invalidate any other reasons why the executable file might be
--- covered by the GNU Public License.
-with System; use System;
-with Ada.Unchecked_Conversion;
-with Grt.Types; use Grt.Types;
-with Grt.Rtis; use Grt.Rtis;
-
--- Addresses handling.
-package Grt.Rtis_Addr is
- function "+" (L : Address; R : Ghdl_Rti_Loc) return Address;
- function "+" (L : Address; R : Ghdl_Index_Type) return Address;
-
- function "-" (L : Address; R : Ghdl_Rti_Loc) return Address;
-
- function Align (L : Address; R : Ghdl_Rti_Loc) return Address;
-
- -- An RTI context contains a pointer (BASE) to or into an instance.
- -- BLOCK describes data being pointed. If a reference is made to a field
- -- described by a parent of BLOCK, BASE must be modified.
- type Rti_Context is record
- Base : Address;
- Block : Ghdl_Rti_Access;
- end record;
-
- Null_Context : constant Rti_Context;
-
- -- Access to an address.
- type Addr_Acc is access Address;
- function To_Addr_Acc is new Ada.Unchecked_Conversion
- (Source => Address, Target => Addr_Acc);
-
- type Ghdl_Index_Acc is access Ghdl_Index_Type;
- function To_Ghdl_Index_Acc is new Ada.Unchecked_Conversion
- (Source => Address, Target => Ghdl_Index_Acc);
-
- -- Get the parent context of CTXT.
- -- The parent of an architecture is its entity.
- function Get_Parent_Context (Ctxt : Rti_Context) return Rti_Context;
-
- -- From an entity link, extract context and instantiation statement.
- procedure Get_Instance_Link (Link : Ghdl_Entity_Link_Acc;
- Ctxt : out Rti_Context;
- Stmt : out Ghdl_Rti_Access);
-
- -- Convert a location to an address.
- function Loc_To_Addr (Depth : Ghdl_Rti_Depth;
- Loc : Ghdl_Rti_Loc;
- Ctxt : Rti_Context)
- return Address;
-
- -- Get the length of for_generate BLK.
- function Get_For_Generate_Length (Blk : Ghdl_Rtin_Block_Acc;
- Ctxt : Rti_Context)
- return Ghdl_Index_Type;
-
- -- Get the context of instance INST.
- procedure Get_Instance_Context (Inst : Ghdl_Rtin_Instance_Acc;
- Ctxt : Rti_Context;
- Sub_Ctxt : out Rti_Context);
-
- -- Extract range of every dimension from bounds.
- procedure Bound_To_Range (Bounds_Addr : Address;
- Def : Ghdl_Rtin_Type_Array_Acc;
- Res : out Ghdl_Range_Array);
-
- function Range_To_Length (Rng : Ghdl_Range_Ptr; Base_Type : Ghdl_Rti_Access)
- return Ghdl_Index_Type;
-
- -- Get the base type of ATYPE.
- function Get_Base_Type (Atype : Ghdl_Rti_Access) return Ghdl_Rti_Access;
-
- -- Return true iff ATYPE is anonymous.
- -- Valid only on type and subtype definitions.
- function Rti_Anonymous_Type (Atype : Ghdl_Rti_Access) return Boolean;
- pragma Inline (Rti_Anonymous_Type);
-
- -- Return true iff ATYPE is complex.
- -- Valid only on type and subtype definitions.
- function Rti_Complex_Type (Atype : Ghdl_Rti_Access) return Boolean;
- pragma Inline (Rti_Complex_Type);
-
- -- Get the top context.
- function Get_Top_Context return Rti_Context;
-
-private
- Null_Context : constant Rti_Context := (Base => Null_Address,
- Block => null);
-end Grt.Rtis_Addr;