--- /dev/null	2006-07-28 20:41:40.430451000 +0800
+++ frysk-core/frysk/proc/IsaFactory.java	2006-07-31 17:06:24.000000000 +0800
@@ -0,0 +1,101 @@
+// This file is part of the program FRYSK.
+//
+// Copyright 2006, Red Hat Inc.
+//
+// FRYSK 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; version 2 of the License.
+//
+// FRYSK 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 FRYSK; if not, write to the Free Software Foundation,
+// Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+// 
+// In addition, as a special exception, Red Hat, Inc. gives You the
+// additional right to link the code of FRYSK with code not covered
+// under the GNU General Public License ("Non-GPL Code") and to
+// distribute linked combinations including the two, subject to the
+// limitations in this paragraph. Non-GPL Code permitted under this
+// exception must only link to the code of FRYSK through those well
+// defined interfaces identified in the file named EXCEPTION found in
+// the source code files (the "Approved Interfaces"). The files of
+// Non-GPL Code may instantiate templates or use macros or inline
+// functions from the Approved Interfaces without causing the
+// resulting work to be covered by the GNU General Public
+// License. Only Red Hat, Inc. may make changes or additions to the
+// list of Approved Interfaces. You must obey the GNU General Public
+// License in all respects for all of the FRYSK code and other code
+// used in conjunction with FRYSK except the Non-GPL Code covered by
+// this exception. If you modify this file, you may extend this
+// exception to your version of the file, but you are not obligated to
+// do so. If you do not wish to provide this exception without
+// modification, you must delete this exception statement from your
+// version and license this file solely under the GPL without
+// exception.
+
+package frysk.proc;
+
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import lib.elf.Elf;
+import lib.elf.ElfCommand;
+import lib.elf.ElfEHeader;
+import lib.elf.ElfEMachine;
+import lib.elf.ElfException;
+
+import frysk.Config;
+
+public class IsaFactory
+{
+  private static IsaFactory factory;
+  static final Logger logger = Logger.getLogger(Config.FRYSK_LOG_ID);
+
+  static IsaFactory getFactory()
+  {
+    if (factory == null)
+      factory = new IsaFactory ();
+    return factory;
+  }
+
+  /** Obtain ISA of task via pid. 
+   */
+  public Isa getIsa(int pid) 
+    throws RuntimeException
+  {
+    Elf elfFile;
+    logger.log (Level.FINE, "{0} getIsa\n", this);
+    
+    try 
+      {
+	elfFile = new Elf(pid, ElfCommand.ELF_C_READ);
+      }
+    catch (ElfException e) 
+      {
+	throw (RuntimeException)
+	  (new RuntimeException("getting task's executable").initCause(e));
+      }
+
+    ElfEHeader header = elfFile.getEHeader();
+
+    switch (header.machine) 
+      {
+      case ElfEMachine.EM_386:
+	return LinuxIa32.isaSingleton ();
+	/*
+	case ElfEMachine.EM_PPC:
+	return LinuxPpc.isaSingleton ();
+	case ElfEMachine.EM_PPC64:
+	return LinuxPpc64.isaSingleton ();
+	*/
+      case ElfEMachine.EM_X86_64:
+	return LinuxEMT64.isaSingleton ();
+      default: 
+	throw new RuntimeException("Unknown machine type " + header.machine);
+    }
+  }
+}