new file mode 100644
--- /dev/null
+++ b/packages/hal/synth/arch/current/src/synth_syscalls.c
@@ -0,0 +1,94 @@
+//=============================================================================
+//
+//      synth_syscalls.c
+//
+//      Synthetic target access to more complex system calls
+//
+//=============================================================================
+//####ECOSGPLCOPYRIGHTBEGIN####
+// -------------------------------------------
+// This file is part of eCos, the Embedded Configurable Operating System.
+// Copyright (C) 2004 Andrew Lunn
+// Copyright (C) 2004 eCosCentric Ltd
+//
+// eCos 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.
+//
+// eCos 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 eCos; if not, write to the Free Software Foundation, Inc.,
+// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+//
+// As a special exception, if other files instantiate templates or use macros
+// or inline functions from this file, or you compile this file and link it
+// with other works to produce a work based on this file, this file does not
+// by itself cause the resulting work to be covered by the GNU General Public
+// License. However the source code for this file must still be made available
+// in accordance with section (3) of the GNU General Public License.
+//
+// This exception does not invalidate any other reasons why a work based on
+// this file might be covered by the GNU General Public License.
+// -------------------------------------------
+//####ECOSGPLCOPYRIGHTEND####
+//=============================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):   Andrew Lunn
+// Contributors:Alexander Neundorf
+// Date:        2004-12-15
+// Purpose:     Access to more complex system calls which require marshalling.
+// Description: 
+//
+//####DESCRIPTIONEND####
+//
+//=============================================================================
+
+#include <cyg/infra/cyg_type.h>
+#include <cyg/hal/hal_diag.h>
+#include <cyg/hal/hal_io.h>
+
+void * cyg_hal_sys_shmat(int shmid, const void* shmaddr, int shmflg)
+{
+   void * result;
+   void * raddr;
+   
+   result = (void *) cyg_hal_sys_ipc(CYG_HAL_SYS_IPCOP_shmat, 
+                                     shmid, 
+                                     shmflg, 
+                                     (int) (&raddr), 
+                                     (void*)shmaddr);
+   return raddr;
+}
+
+int cyg_hal_sys_shmget(int key, int size, int shmflg)
+{
+  return cyg_hal_sys_ipc(CYG_HAL_SYS_IPCOP_shmget, key, size, shmflg, NULL);
+}
+
+int cyg_hal_sys_shmdt(const void* shmaddr)
+{
+  return cyg_hal_sys_ipc(CYG_HAL_SYS_IPCOP_shmdt, 0, 0, 0, 
+                         ((void *) shmaddr));
+}
+
+int 
+cyg_hal_sys_mmap(void *addr, unsigned long length, unsigned long prot, 
+                    unsigned long flags, unsigned long fd, unsigned long off)
+{
+  
+  struct cyg_hal_sys_mmap_args args;
+  
+  args.addr = (unsigned long) addr;
+  args.len = length;
+  args.prot = prot = prot;
+  args.flags = flags;
+  args.fd = fd;
+  args.offset = off;
+  
+  return (cyg_hal_sys_mmapx(&args));
+}