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diff --git a/simulate/areapools.ads b/simulate/areapools.ads
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---  Area based memory manager
---  Copyright (C) 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 GHDL; see the file COPYING.  If not, write to the Free
---  Software Foundation, 59 Temple Place - Suite 330, Boston, MA
---  02111-1307, USA.
-
-with System; use System;
-with System.Storage_Elements; use System.Storage_Elements;
-
-package Areapools is
-   type Areapool is limited private;
-   type Mark_Type is private;
-
-   type Areapool_Acc is access all Areapool;
-
-   --  Modular type for the size.  We don't use Storage_Offset in order to
-   --  make alignment computation efficient (knowing that alignment is a
-   --  power of two).
-   type Size_Type is mod System.Memory_Size;
-
-   --  Allocate SIZE bytes (aligned on ALIGN bytes) in memory pool POOL and
-   --  return the address in RES.
-   procedure Allocate (Pool : in out Areapool;
-                       Res : out Address;
-                       Size : Size_Type;
-                       Align : Size_Type);
-
-   --  Return TRUE iff no memory is allocated in POOL.
-   function Is_Empty (Pool : Areapool) return Boolean;
-
-   --  Higher level abstraction for Allocate.
-   generic
-      type T is private;
-   function Alloc_On_Pool_Addr (Pool : Areapool_Acc; Val : T)
-                               return System.Address;
-
-   --  Get a mark of POOL.
-   procedure Mark (M : out Mark_Type;
-                   Pool : Areapool);
-
-   --  Release memory allocated in POOL after mark M.
-   procedure Release (M : Mark_Type;
-                      Pool : in out Areapool);
-
-   Empty_Marker : constant Mark_Type;
-private
-   --  Minimal size of allocation.
-   Default_Chunk_Size : constant Size_Type := 16 * 1024;
-
-   type Chunk_Type;
-   type Chunk_Acc is access all Chunk_Type;
-
-   type Data_Array is array (Size_Type range <>) of Storage_Element;
-   for Data_Array'Alignment use Standard'Maximum_Alignment;
-
-   type Chunk_Type (Last : Size_Type) is record
-      Prev : Chunk_Acc;
-      Data : Data_Array (0 .. Last);
-   end record;
-   for Chunk_Type'Alignment use Standard'Maximum_Alignment;
-
-   type Areapool is limited record
-      First, Last : Chunk_Acc := null;
-      Next_Use : Size_Type;
-   end record;
-
-   type Mark_Type is record
-      Last : Chunk_Acc := null;
-      Next_Use : Size_Type;
-   end record;
-
-   Empty_Marker : constant Mark_Type := (Last => null, Next_Use => 0);
-
-   Erase_When_Released : constant Boolean := True;
-end Areapools;