# Copyright 2008 The Johns Hopkins University/Applied Physics Laboratory

# This software was developed at The Johns Hopkins University/Applied Physics
# Laboratory ("JHU/APL") that is the author thereof under the "work made for
# hire" provisions of the copyright law.  Permission is hereby granted, free
# of charge, to any person obtaining a copy of this software and associated
# documentation (the "Software"), to use the Software without restriction,
# including without limitation the rights to copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to permit
# others to do so, subject to the following conditions:

# 1.  This LICENSE AND DISCLAIMER, including the copyright notice, shall be
# included in all copies of the Software, including copies of substantial
# portions of the Software; 
# 2.  JHU/APL assumes no obligation to provide support of any kind with
# regard to the Software.  This includes no obligation to provide assistance
# in using the Software nor to provide updated versions of the Software; and
# 3.  THE SOFTWARE AND ITS DOCUMENTATION ARE PROVIDED AS IS AND WITHOUT ANY
# EXPRESS OR IMPLIED WARRANTIES WHATSOEVER.  ALL WARRANTIES INCLUDING, BUT
# NOT LIMITED TO, PERFORMANCE, MERCHANTABILITY, FITNESS FOR A PARTICULAR
# PURPOSE, AND NONINFRINGEMENT ARE HEREBY DISCLAIMED.  USERS ASSUME THE
# ENTIRE RISK AND LIABILITY OF USING THE SOFTWARE.  USERS ARE ADVISED TO TEST
# THE SOFTWARE THOROUGHLY BEFORE RELYING ON IT.  IN NO EVENT SHALL THE JOHNS
# HOPKINS UNIVERSITY BE LIABLE FOR ANY DAMAGES WHATSOEVER, INCLUDING, WITHOUT
# LIMITATION, ANY LOST PROFITS, LOST SAVINGS OR OTHER INCIDENTAL OR
# CONSEQUENTIAL DAMAGES, ARISING OUT OF THE USE OR INABILITY TO USE THE
# SOFTWARE.

import sys

# Load command line arguements
if len(sys.argv) < 4:
  print "Usage: " + sys.argv[0] + " [memory image] [start page] [number of pages]"
  sys.exit()

start = int(sys.argv[2])
number = int(sys.argv[3])

# Page size in bytes
page = 4096

f = open(sys.argv[1])

try:
  f.seek(start * page)
  data = f.read(page * number)
  print data
finally:
  f.close()