new file mode 100644
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+++ b/packages/kernel/current/include/mvarimpl.hxx
@@ -0,0 +1,130 @@
+#ifndef CYGONCE_KERNEL_MVARIMPL_HXX
+#define CYGONCE_KERNEL_MVARIMPL_HXX
+
+//==========================================================================
+//
+//	mvarimpl.hxx
+//
+//	Memory pool with variable block class declarations
+//
+//==========================================================================
+//####COPYRIGHTBEGIN####
+//
+// -------------------------------------------
+// The contents of this file are subject to the Cygnus eCos Public License
+// Version 1.0 (the "License"); you may not use this file except in
+// compliance with the License.  You may obtain a copy of the License at
+// http://sourceware.cygnus.com/ecos
+// 
+// Software distributed under the License is distributed on an "AS IS"
+// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the
+// License for the specific language governing rights and limitations under
+// the License.
+// 
+// The Original Code is eCos - Embedded Cygnus Operating System, released
+// September 30, 1998.
+// 
+// The Initial Developer of the Original Code is Cygnus.  Portions created
+// by Cygnus are Copyright (C) 1998 Cygnus Solutions.  All Rights Reserved.
+// -------------------------------------------
+//
+//####COPYRIGHTEND####
+//==========================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s): 	dsm
+// Contributors:	dsm
+// Date:	1998-05-21
+// Purpose:	Define Mvarimpl class interface
+// Description:	Inline class for constructing a variable block allocator
+// Usage:	#include <cyg/kernel/mvarimpl.hxx>
+//		
+//
+//####DESCRIPTIONEND####
+//
+//==========================================================================
+
+#include <cyg/kernel/ktypes.h>
+#include <cyg/kernel/thread.hxx>
+
+class Cyg_Mempool_Variable_Implementation {
+private:
+    // these constructors are explicitly disallowed
+    Cyg_Mempool_Variable_Implementation() {};
+//    Cyg_Mempool_Variable_Implementation( Cyg_Mempool_Variable_Implementation &ref )
+//    {};
+    Cyg_Mempool_Variable_Implementation &
+    operator=( Cyg_Mempool_Variable_Implementation &ref )
+    { return ref; };
+
+private:
+    struct memdq {
+        struct memdq *prev, *next;
+        cyg_int32 size;
+    };
+
+    struct memdq head;
+    cyg_uint8  *obase;
+    cyg_int32  osize;
+    cyg_int32  oalign;
+    cyg_uint8  *bottom;
+    cyg_uint8  *top;
+    cyg_int32  alignment;
+    cyg_int32  freemem;
+
+    // round up size passed to alloc/free to a size that will be used
+    // for allocation
+    cyg_int32
+    roundup(cyg_int32 size);
+
+public:
+    // THIS is the public API of memory pools generally that can have the
+    // kernel oriented thread-safe package layer atop.
+
+    // Constructor: gives the base and size of the arena in which memory is
+    // to be carved out.
+    Cyg_Mempool_Variable_Implementation(
+        cyg_uint8 *  /* base */,
+        cyg_int32    /* size */,
+        CYG_ADDRWORD /* alignment */);
+
+    // Destructor
+    ~Cyg_Mempool_Variable_Implementation();
+
+    // get size bytes of memory
+    inline cyg_uint8 *
+    alloc( cyg_int32 /* size */ );
+    
+    // free size bytes of memory back to the pool
+    inline cyg_bool
+    free( cyg_uint8 * /* ptr */,
+          cyg_int32   /* size */ );
+
+    // returns -1 as not variable size
+    inline cyg_int32
+    get_blocksize( void ) { return -1; }
+
+    // these two are obvious and generic
+    inline cyg_int32
+    get_totalmem( void ) { return top-bottom; }
+
+    inline cyg_int32
+    get_freemem( void ) { return freemem; }
+
+    // get information about the construction parameters for external
+    // freeing after the destruction of the holding object
+    inline void
+    get_arena( cyg_uint8 * &  /* base */,
+               cyg_int32 &    /* size */,
+               CYG_ADDRWORD & /* maxfree */ );
+
+    // Return the size of the memory allocation (previously returned 
+    // by alloc() or try_alloc() ) at ptr. Returns -1 if not found
+    inline cyg_int32
+    get_allocation_size( cyg_uint8 * /* ptr */ );
+
+};
+
+// -------------------------------------------------------------------------
+#endif // ifndef CYGONCE_KERNEL_MVARIMPL_HXX
+// EOF mvarimpl.hxx