715 lines
26 KiB
Python
Executable File
715 lines
26 KiB
Python
Executable File
#!/usr/bin/python
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#============================================================================
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#
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#/** @file createxbl.py
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#
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# GENERAL DESCRIPTION
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# Concatentates XBL segments into one ELF image
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#
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# Copyright (c) 2016, The Linux Foundation. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met:
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# * Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials provided
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# with the distribution.
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# * Neither the name of The Linux Foundation nor the names of its
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# contributors may be used to endorse or promote products derived
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# from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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# IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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#**/
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#
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#----------------------------------------------------------------------------
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#
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# EDIT HISTORY FOR FILE
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#
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# This section contains comments describing changes made to the module.
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# Notice that changes are listed in reverse chronological order.
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#
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# when who what, where, why
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# -------- --- ------------------------------------------------------
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# 09/04/15 et Added -x and -d to embed xbl_sec ELF
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# 02/11/15 ck Fixed missing elf type check in ZI OOB feature
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# 11/04/14 ck Updated calls to mbn_tools functions
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# 10/22/14 ck Added -z option to remove out of bounds ZI segments when converting from 64 to 32
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# 10/10/14 ck Added -c option and logic to enable elf type swapping
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# 09/12/14 ck Added single file logic
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# 08/29/14 ck Added no_hash option
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# 08/29/14 ck Refactored to use proper python arguments and cleaned code
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# 06/16/14 niting xbl.mbn to xbl.elf
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# 05/28/14 niting Initial revision
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#
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#============================================================================
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from optparse import OptionParser
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import os
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import sys
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import shutil
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import mbn_tools
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PAGE_SIZE = 4096
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SEGMENT_ALIGN = 16
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ELF32_HDR_SIZE = 52
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ELF32_PHDR_SIZE = 32
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ELF64_HDR_SIZE = 64
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ELF64_PHDR_SIZE = 56
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##############################################################################
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# main
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##############################################################################
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def main():
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parser = OptionParser(usage='usage: %prog [options] arguments')
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parser.add_option("-f", "--first_filepath",
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action="store", type="string", dest="elf_inp_file1",
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help="First ELF file to merge.")
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parser.add_option("-s", "--second_filepath",
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action="store", type="string", dest="elf_inp_file2",
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help="Second ELF file to merge.")
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parser.add_option("-x", "--xbl_sec_filepath",
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action="store", type="string", dest="elf_inp_xbl_sec",
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help="Second ELF file to merge.")
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parser.add_option("-o", "--output_filepath",
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action="store", type="string", dest="binary_out",
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help="Merged filename and path.")
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parser.add_option("-a", "--first_elf_arch",
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action="store", type="string", dest="elf_1_arch",
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help="First (and output) ELF file architecture. '32' or '64'")
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parser.add_option("-b", "--second_elf_arch",
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action="store", type="string", dest="elf_2_arch",
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help="Second ELF file architecture. '32' or '64'")
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parser.add_option("-d", "--xbl_sec_elf_arch",
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action="store", type="string", dest="elf_xbl_sec_arch",
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help="xbl_sec file architecture. '32' or '64'")
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parser.add_option("-c", "--output_elf_arch",
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action="store", type="string", dest="elf_out_arch",
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help="Output ELF file architecture. '32' or '64'" + \
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" If not given defaults to first file arch.")
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parser.add_option("-n", "--no_hash",
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action="store_true", dest="hash_image",
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help="Disables hashing of image after merging.")
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parser.add_option("-z", "--zi_out_of_bounds",
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action="store_true", dest="zi_oob",
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help="Removes ZI segments that have addresses greater" + \
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" than 32 bits when converting from a 64 to 32 bit ELF")
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(options, args) = parser.parse_args()
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if not options.elf_inp_file1:
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parser.error('First ELF filename not given')
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if not options.binary_out:
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parser.error('Output filename not given')
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if not options.elf_1_arch:
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parser.error('First ELF architecture not given')
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if (not options.elf_1_arch == '64') and (not options.elf_1_arch == '32'):
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parser.error('Invalid First ELF architecture given')
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# Only evaluate elf_2_arch if two files are given for merging
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if options.elf_inp_file2:
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if (not options.elf_2_arch == '64') and (not options.elf_2_arch == '32'):
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parser.error('Invalid Second ELF architecture given')
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# Only evaluate elf_xbl_sec_arch if file is given
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if options.elf_inp_xbl_sec:
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if (not options.elf_xbl_sec_arch == '64') and (not options.elf_xbl_sec_arch == '32'):
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parser.error('Invalid xbl_sec ELF architecture given')
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# If output file architecture is given ensure it is either '32' or '64'
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if options.elf_out_arch:
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if (not options.elf_out_arch == '64') and (not options.elf_out_arch == '32'):
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parser.error('Invalid Output ELF architecture given')
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gen_dict = {}
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elf_inp_file1 = options.elf_inp_file1
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# It is valid for only one file to be "merged". This essentially just
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# strips off the section names. If second file name is not given then
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# set elf_inp_file2 to ""
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if options.elf_inp_file2:
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elf_inp_file2 = options.elf_inp_file2
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else:
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elf_inp_file2 = ""
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# Do same for xbl_sec
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elf_inp_xbl_sec = options.elf_inp_xbl_sec if options.elf_inp_xbl_sec else ""
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binary_out = options.binary_out
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if options.elf_1_arch == '64':
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is_elf1_64_bit = True
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else:
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is_elf1_64_bit = False
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# If second filename is not given then set is_elf2_64_bit to false so it
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# can be passed even though it is not used.
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if options.elf_inp_file2:
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if options.elf_2_arch == '64':
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is_elf2_64_bit = True
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else:
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is_elf2_64_bit = False
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else:
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is_elf2_64_bit = False
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if options.elf_inp_xbl_sec:
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if options.elf_xbl_sec_arch == '64':
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is_elf_xbl_sec_64_bit = True
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else:
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is_elf_xbl_sec_64_bit = False
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else:
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is_elf_xbl_sec_64_bit = False
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# If output ELF arch is given then set is_out_elf_64_bit accordingly.
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# If not then default to be input1's setting
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if options.elf_out_arch:
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if options.elf_out_arch == '64':
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is_out_elf_64_bit = True
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else:
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is_out_elf_64_bit = False
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else:
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is_out_elf_64_bit = is_elf1_64_bit
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# Store ZI Out of Bounds value
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if not options.zi_oob:
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zi_oob_enabled = False
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else:
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zi_oob_enabled = True
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mbn_type = 'elf'
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header_format = 'reg'
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gen_dict['IMAGE_KEY_IMAGE_ID'] = mbn_tools.ImageType.APPSBL_IMG
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#gen_dict['IMAGE_KEY_IMAGE_SOURCE'] = 0
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#gen_dict['IMAGE_KEY_IMAGE_DEST'] = 0
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gen_dict['IMAGE_KEY_MBN_TYPE'] = mbn_type
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image_header_secflag = 'non_secure'
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source_base = os.path.splitext(str(binary_out))[0]
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target_base = os.path.splitext(str(binary_out))[0]
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merged_elf = source_base + "_merged.elf"
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source_elf = source_base + "_nohash.elf"
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target_hash = target_base + ".hash"
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target_hash_hd = target_base + "_hash.hd"
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target_phdr_elf = target_base + "_phdr.pbn"
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target_nonsec = target_base + "_combined_hash.mbn"
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#print "Input file 1:", elf_inp_file1
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#print "Input file 2:", elf_inp_file2
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#print "Output file:", binary_out
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merge_elfs([],
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elf_inp_file1,
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elf_inp_file2,
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elf_inp_xbl_sec,
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merged_elf,
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is_elf1_64_bit,
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is_elf2_64_bit,
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is_elf_xbl_sec_64_bit,
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is_out_elf_64_bit,
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zi_oob_enabled)
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# Hash the image if user did not explicitly say not to
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if options.hash_image:
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# Just copy the merged elf to the final output name
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shutil.move(merged_elf, binary_out)
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else:
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shutil.copy(merged_elf, source_elf)
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# Create hash table
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rv = mbn_tools.pboot_gen_elf([],
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source_elf,
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target_hash,
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elf_out_file_name = target_phdr_elf,
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secure_type = image_header_secflag)
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if rv:
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raise RuntimeError, "Failed to run pboot_gen_elf"
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# Create hash table header
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rv = mbn_tools.image_header([],
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gen_dict,
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target_hash,
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target_hash_hd,
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image_header_secflag,
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elf_file_name = source_elf)
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if rv:
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raise RuntimeError, "Failed to create image header for hash segment"
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files_to_cat_in_order = [target_hash_hd, target_hash]
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mbn_tools.concat_files (target_nonsec, files_to_cat_in_order)
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# Add the hash segment into the ELF
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mbn_tools.pboot_add_hash([],
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target_phdr_elf,
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target_nonsec,
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binary_out)
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return
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##############################################################################
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# roundup
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##############################################################################
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def roundup(x, precision):
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return x if x % precision == 0 else (x + precision - (x % precision))
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##############################################################################
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# merge_elfs
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##############################################################################
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def merge_elfs(env,
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elf_in_file_name1,
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elf_in_file_name2,
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elf_in_file_xbl_sec,
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elf_out_file_name,
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is_elf1_64_bit,
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is_elf2_64_bit,
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is_elf_xbl_sec_64_bit,
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is_out_elf_64_bit,
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zi_oob_enabled):
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[elf_header1, phdr_table1] = \
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mbn_tools.preprocess_elf_file(elf_in_file_name1)
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# Check to make sure second file path exists before using
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if elf_in_file_name2 != "":
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[elf_header2, phdr_table2] = \
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mbn_tools.preprocess_elf_file(elf_in_file_name2)
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# Check to make sure xbl_sec file path exists before using
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if elf_in_file_xbl_sec != "":
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[elf_headerxblsec, phdr_tablexblsec] = \
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mbn_tools.preprocess_elf_file(elf_in_file_xbl_sec)
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# Open Files
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elf_in_fp1 = mbn_tools.OPEN(elf_in_file_name1, "rb")
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if elf_in_file_name2 != "":
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elf_in_fp2 = mbn_tools.OPEN(elf_in_file_name2, "rb")
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if elf_in_file_xbl_sec != "":
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elf_in_fpxblsec = mbn_tools.OPEN(elf_in_file_xbl_sec, "rb")
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if elf_out_file_name is not None:
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elf_out_fp = mbn_tools.OPEN(elf_out_file_name, "wb+")
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# Calculate the new program header size. This is dependant on the output
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# ELF type and number of program headers going into output.
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if is_out_elf_64_bit:
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phdr_total_size = elf_header1.e_phnum * ELF64_PHDR_SIZE
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phdr_total_count = elf_header1.e_phnum
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else:
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phdr_total_size = elf_header1.e_phnum * ELF32_PHDR_SIZE
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phdr_total_count = elf_header1.e_phnum
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# This logic only applies if two files are to be merged
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if elf_in_file_name2 != "":
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if is_out_elf_64_bit:
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phdr_total_size += elf_header2.e_phnum * ELF64_PHDR_SIZE
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phdr_total_count += elf_header2.e_phnum
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else:
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phdr_total_size += elf_header2.e_phnum * ELF32_PHDR_SIZE
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phdr_total_count += elf_header2.e_phnum
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# Account for xbl_sec header if included
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if elf_in_file_xbl_sec != "":
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phdr_total_count += 1
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if is_out_elf_64_bit:
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phdr_total_size += ELF64_PHDR_SIZE
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else:
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phdr_total_size += ELF32_PHDR_SIZE
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# Create a new ELF header for the output file
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if is_out_elf_64_bit:
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out_elf_header = mbn_tools.Elf64_Ehdr('\0' * ELF64_HDR_SIZE)
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out_elf_header.e_phoff = ELF64_HDR_SIZE
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out_elf_header.e_ehsize = ELF64_HDR_SIZE
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out_elf_header.e_phentsize = ELF64_PHDR_SIZE
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out_elf_header.e_machine = 183
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out_elf_header.e_ident = str('\x7f' + 'E' + 'L' + 'F' + \
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'\x02' + \
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'\x01' + \
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'\x01' + \
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'\x00' + \
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'\x00' + \
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('\x00' * 7))
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out_elf_header.e_entry = elf_header1.e_entry
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else:
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out_elf_header = mbn_tools.Elf32_Ehdr('\0' * ELF32_HDR_SIZE)
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out_elf_header.e_phoff = ELF32_HDR_SIZE
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out_elf_header.e_ehsize = ELF32_HDR_SIZE
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out_elf_header.e_phentsize = ELF32_PHDR_SIZE
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out_elf_header.e_machine = 40
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out_elf_header.e_entry = elf_header1.e_entry
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out_elf_header.e_ident = str('\x7f' + 'E' + 'L' + 'F' + \
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'\x01' + \
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'\x01' + \
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'\x01' + \
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'\x00' + \
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'\x00' + \
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('\x00' * 7))
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# Address needs to be verified that it is not greater than 32 bits
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# as it is possible to go from a 64 bit elf to 32.
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if (elf_header1.e_entry > 0xFFFFFFFF):
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print "ERROR: File 1's entry point is too large to convert."
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exit()
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out_elf_header.e_entry = elf_header1.e_entry
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# Common header entries
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out_elf_header.e_type = 2
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out_elf_header.e_version = 1
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out_elf_header.e_shoff = 0
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out_elf_header.e_flags = 0
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out_elf_header.e_shentsize = 0
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out_elf_header.e_shnum = 0
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out_elf_header.e_shstrndx = 0
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# If ZI OOB is enabled then it is possible that a segment could be discarded
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# Scan for that instance and handle before setting e_phnum and writing header
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# Ensure ELF output is 32 bit
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if zi_oob_enabled == True and is_out_elf_64_bit == False:
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for i in range(len(phdr_table1)):
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if (phdr_table1[i].p_vaddr > 0xFFFFFFFF) or \
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(phdr_table1[i].p_paddr > 0xFFFFFFFF):
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if phdr_table1[i].p_filesz == 0:
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phdr_total_count = phdr_total_count - 1
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if elf_in_file_name2 != "":
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for i in range(len(phdr_table2)):
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if (phdr_table2[i].p_vaddr > 0xFFFFFFFF) or \
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(phdr_table2[i].p_paddr > 0xFFFFFFFF):
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if phdr_table2[i].p_filesz == 0:
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phdr_total_count = phdr_total_count - 1
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# Do not include xbl_sec in above calculation
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# xbl_sec is to be treated as a single blob
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# Now it is ok to populate the ELF header and write it out
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out_elf_header.e_phnum = phdr_total_count
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# write elf header
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if is_out_elf_64_bit == False:
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elf_out_fp.write(mbn_tools.Elf32_Ehdr.getPackedData(out_elf_header))
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else:
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elf_out_fp.write(mbn_tools.Elf64_Ehdr.getPackedData(out_elf_header))
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phdr_offset = out_elf_header.e_phoff # offset of where to put next phdr
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# offset the start of the segments just after the program headers
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segment_offset = roundup(out_elf_header.e_phoff + phdr_total_size, PAGE_SIZE)
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# Output first elf data
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for i in range(elf_header1.e_phnum):
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curr_phdr = phdr_table1[i]
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# Copy program header piece by piece to ensure possible conversion success
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if is_out_elf_64_bit == True:
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# Converting from 32 to 64 elf requires no data size validation
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new_phdr = mbn_tools.Elf64_Phdr('\0' * ELF64_PHDR_SIZE)
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new_phdr.p_type = curr_phdr.p_type
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new_phdr.p_offset = segment_offset
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new_phdr.p_vaddr = curr_phdr.p_vaddr
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new_phdr.p_paddr = curr_phdr.p_paddr
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new_phdr.p_filesz = curr_phdr.p_filesz
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new_phdr.p_memsz = curr_phdr.p_memsz
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new_phdr.p_flags = curr_phdr.p_flags
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new_phdr.p_align = curr_phdr.p_align
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else:
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# Converting from 64 to 32 elf requires data size validation
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# Note that there is an option to discard a segment if it is only ZI
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# and its address is greater than 32 bits
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new_phdr = mbn_tools.Elf32_Phdr('\0' * ELF32_PHDR_SIZE)
|
|
new_phdr.p_type = curr_phdr.p_type
|
|
new_phdr.p_offset = segment_offset
|
|
|
|
if curr_phdr.p_vaddr > 0xFFFFFFFF:
|
|
if (zi_oob_enabled == True) and (curr_phdr.p_filesz == 0):
|
|
continue
|
|
else:
|
|
print "ERROR: File 1 VAddr is too large for conversion."
|
|
exit()
|
|
new_phdr.p_vaddr = curr_phdr.p_vaddr
|
|
|
|
if curr_phdr.p_paddr > 0xFFFFFFFF:
|
|
if (zi_oob_enabled == True) and (curr_phdr.p_filesz == 0):
|
|
continue
|
|
else:
|
|
print "ERROR: File 1 PAddr is too large for conversion."
|
|
exit()
|
|
new_phdr.p_paddr = curr_phdr.p_paddr
|
|
|
|
if curr_phdr.p_filesz > 0xFFFFFFFF:
|
|
print "ERROR: File 1 Filesz is too large for conversion."
|
|
exit()
|
|
new_phdr.p_filesz = curr_phdr.p_filesz
|
|
|
|
if curr_phdr.p_memsz > 0xFFFFFFFF:
|
|
print "ERROR: File 1 Memsz is too large for conversion."
|
|
exit()
|
|
new_phdr.p_memsz = curr_phdr.p_memsz
|
|
|
|
if curr_phdr.p_flags > 0xFFFFFFFF:
|
|
print "ERROR: File 1 Flags is too large for conversion."
|
|
exit()
|
|
new_phdr.p_flags = curr_phdr.p_flags
|
|
|
|
if curr_phdr.p_align > 0xFFFFFFFF:
|
|
print "ERROR: File 1 Align is too large for conversion."
|
|
exit()
|
|
new_phdr.p_align = curr_phdr.p_align
|
|
|
|
|
|
#print "i=",i
|
|
#print "phdr_offset=", phdr_offset
|
|
|
|
# update output file location to next phdr location
|
|
elf_out_fp.seek(phdr_offset)
|
|
# increment phdr_offset to next location
|
|
phdr_offset += out_elf_header.e_phentsize
|
|
|
|
inp_data_offset = curr_phdr.p_offset # used to read data from input file
|
|
|
|
# print "inp_data_offset="
|
|
# print inp_data_offset
|
|
#
|
|
# print "curr_phdr.p_offset="
|
|
# print curr_phdr.p_offset
|
|
#
|
|
# print "curr_phdr.p_filesz="
|
|
# print curr_phdr.p_filesz
|
|
|
|
# output current phdr
|
|
if is_out_elf_64_bit == False:
|
|
elf_out_fp.write(mbn_tools.Elf32_Phdr.getPackedData(new_phdr))
|
|
else:
|
|
elf_out_fp.write(mbn_tools.Elf64_Phdr.getPackedData(new_phdr))
|
|
|
|
# Copy the ELF segment
|
|
bytes_written = mbn_tools.file_copy_offset(elf_in_fp1,
|
|
inp_data_offset,
|
|
elf_out_fp,
|
|
new_phdr.p_offset,
|
|
new_phdr.p_filesz)
|
|
|
|
# update data segment offset to be aligned after previous segment
|
|
segment_offset += roundup(new_phdr.p_filesz, SEGMENT_ALIGN);
|
|
elf_in_fp1.close()
|
|
|
|
# Output second elf data if applicable
|
|
if elf_in_file_name2 != "":
|
|
for i in range(elf_header2.e_phnum):
|
|
curr_phdr = phdr_table2[i]
|
|
|
|
# Copy program header piece by piece to ensure possible conversion success
|
|
if is_out_elf_64_bit == True:
|
|
# Converting from 32 to 64 elf requires no data size validation
|
|
new_phdr = mbn_tools.Elf64_Phdr('\0' * ELF64_PHDR_SIZE)
|
|
new_phdr.p_type = curr_phdr.p_type
|
|
new_phdr.p_offset = segment_offset
|
|
new_phdr.p_vaddr = curr_phdr.p_vaddr
|
|
new_phdr.p_paddr = curr_phdr.p_paddr
|
|
new_phdr.p_filesz = curr_phdr.p_filesz
|
|
new_phdr.p_memsz = curr_phdr.p_memsz
|
|
new_phdr.p_flags = curr_phdr.p_flags
|
|
new_phdr.p_align = curr_phdr.p_align
|
|
else:
|
|
# Converting from 64 to 32 elf requires data size validation
|
|
# Note that there is an option to discard a segment if it is only ZI
|
|
# and its address is greater than 32 bits
|
|
new_phdr = mbn_tools.Elf32_Phdr('\0' * ELF32_PHDR_SIZE)
|
|
new_phdr.p_type = curr_phdr.p_type
|
|
new_phdr.p_offset = segment_offset
|
|
|
|
if curr_phdr.p_vaddr > 0xFFFFFFFF:
|
|
if (zi_oob_enabled == True) and (curr_phdr.p_filesz == 0):
|
|
continue
|
|
else:
|
|
print "ERROR: File 2 VAddr is too large for conversion."
|
|
exit()
|
|
new_phdr.p_vaddr = curr_phdr.p_vaddr
|
|
|
|
if curr_phdr.p_paddr > 0xFFFFFFFF:
|
|
if (zi_oob_enabled == True) and (curr_phdr.p_filesz == 0):
|
|
continue
|
|
else:
|
|
print "ERROR: File 2 PAddr is too large for conversion."
|
|
exit()
|
|
new_phdr.p_paddr = curr_phdr.p_paddr
|
|
|
|
if curr_phdr.p_filesz > 0xFFFFFFFF:
|
|
print "ERROR: File 2 Filesz is too large for conversion."
|
|
exit()
|
|
new_phdr.p_filesz = curr_phdr.p_filesz
|
|
|
|
if curr_phdr.p_memsz > 0xFFFFFFFF:
|
|
print "ERROR: File 2 Memsz is too large for conversion."
|
|
exit()
|
|
new_phdr.p_memsz = curr_phdr.p_memsz
|
|
|
|
if curr_phdr.p_flags > 0xFFFFFFFF:
|
|
print "ERROR: File 2 Flags is too large for conversion."
|
|
exit()
|
|
new_phdr.p_flags = curr_phdr.p_flags
|
|
|
|
if curr_phdr.p_align > 0xFFFFFFFF:
|
|
print "ERROR: File 2 Align is too large for conversion."
|
|
exit()
|
|
new_phdr.p_align = curr_phdr.p_align
|
|
|
|
|
|
# print "i=",i
|
|
# print "phdr_offset=", phdr_offset
|
|
|
|
# update output file location to next phdr location
|
|
elf_out_fp.seek(phdr_offset)
|
|
# increment phdr_offset to next location
|
|
phdr_offset += out_elf_header.e_phentsize
|
|
|
|
inp_data_offset = curr_phdr.p_offset # used to read data from input file
|
|
|
|
# print "inp_data_offset="
|
|
# print inp_data_offset
|
|
#
|
|
# print "curr_phdr.p_offset="
|
|
# print curr_phdr.p_offset
|
|
#
|
|
# print "curr_phdr.p_filesz="
|
|
# print curr_phdr.p_filesz
|
|
|
|
# output current phdr
|
|
if is_out_elf_64_bit == False:
|
|
elf_out_fp.write(mbn_tools.Elf32_Phdr.getPackedData(new_phdr))
|
|
else:
|
|
elf_out_fp.write(mbn_tools.Elf64_Phdr.getPackedData(new_phdr))
|
|
|
|
# Copy the ELF segment
|
|
bytes_written = mbn_tools.file_copy_offset(elf_in_fp2,
|
|
inp_data_offset,
|
|
elf_out_fp,
|
|
new_phdr.p_offset,
|
|
new_phdr.p_filesz)
|
|
|
|
# update data segment offset to be aligned after previous segment
|
|
segment_offset += roundup(new_phdr.p_filesz, SEGMENT_ALIGN);
|
|
elf_in_fp2.close()
|
|
|
|
# Embed xbl_sec image if provided
|
|
if elf_in_file_xbl_sec != "":
|
|
|
|
# Scan pheaders in xbl_sec for segment that contains entry point address
|
|
entry_seg_offset = -1
|
|
entry_addr = elf_headerxblsec.e_entry
|
|
for i in range(elf_headerxblsec.e_phnum):
|
|
phdr = phdr_tablexblsec[i]
|
|
max_addr = phdr.p_vaddr + phdr.p_memsz
|
|
if phdr.p_vaddr <= entry_addr <= max_addr:
|
|
entry_seg_offset = phdr.p_offset
|
|
break
|
|
if entry_seg_offset == -1:
|
|
print "Error: Failed to find entry point in any segment!"
|
|
exit()
|
|
# magical equation for program header's phys and virt addr
|
|
phys_virt_addr = entry_addr - entry_seg_offset
|
|
|
|
if is_out_elf_64_bit:
|
|
# Converting from 32 to 64 elf requires no data size validation
|
|
new_phdr = mbn_tools.Elf64_Phdr('\0' * ELF64_PHDR_SIZE)
|
|
new_phdr.p_type = 0x1
|
|
new_phdr.p_offset = segment_offset
|
|
new_phdr.p_vaddr = phys_virt_addr
|
|
new_phdr.p_paddr = phys_virt_addr
|
|
new_phdr.p_filesz = os.path.getsize(elf_in_file_xbl_sec)
|
|
new_phdr.p_memsz = new_phdr.p_filesz
|
|
new_phdr.p_flags = 0x5
|
|
new_phdr.p_align = 0x1000
|
|
else:
|
|
# Converting from 64 to 32 elf requires data size validation
|
|
# Don't discard the segment containing xbl_sec, simply error out
|
|
# if the address is greater than 32 bits
|
|
new_phdr = mbn_tools.Elf32_Phdr('\0' * ELF32_PHDR_SIZE)
|
|
new_phdr.p_type = 0x1 #
|
|
new_phdr.p_offset = segment_offset
|
|
new_phdr.p_flags = 0x5
|
|
new_phdr.p_align = 0x1000
|
|
|
|
if phys_virt_addr > 0xFFFFFFFF:
|
|
if zi_oob_enabled == False or curr_phdr.p_filesz != 0:
|
|
print "ERROR: File xbl_sec VAddr or PAddr is too large for conversion."
|
|
exit()
|
|
new_phdr.p_vaddr = phys_virt_addr
|
|
new_phdr.p_paddr = phys_virt_addr
|
|
|
|
if os.path.getsize(elf_in_file_xbl_sec) > 0xFFFFFFFF:
|
|
print "ERROR: File xbl_sec Filesz is too large for conversion."
|
|
exit()
|
|
new_phdr.p_filesz = os.path.getsize(elf_in_file_xbl_sec)
|
|
new_phdr.p_memsz = new_phdr.p_filesz
|
|
|
|
|
|
# update output file location to next phdr location
|
|
elf_out_fp.seek(phdr_offset)
|
|
# increment phdr_offset to next location
|
|
phdr_offset += out_elf_header.e_phentsize
|
|
# Copy entire xbl_sec file, so start from byte 0
|
|
inp_data_offset = 0
|
|
|
|
# Output xbl_sec's phdr
|
|
elf_in_file_xbl_sec
|
|
if is_out_elf_64_bit == False:
|
|
elf_out_fp.write(mbn_tools.Elf32_Phdr.getPackedData(new_phdr))
|
|
else:
|
|
elf_out_fp.write(mbn_tools.Elf64_Phdr.getPackedData(new_phdr))
|
|
|
|
# Copy the ENTIRE xbl_sec image
|
|
bytes_written = mbn_tools.file_copy_offset(elf_in_fpxblsec,
|
|
inp_data_offset,
|
|
elf_out_fp,
|
|
new_phdr.p_offset,
|
|
new_phdr.p_filesz)
|
|
# update data segment offset to be aligned after previous segment
|
|
# Not necessary, unless appending more pheaders after this point
|
|
segment_offset += roundup(new_phdr.p_filesz, SEGMENT_ALIGN);
|
|
|
|
elf_in_fpxblsec.close()
|
|
|
|
elf_out_fp.close()
|
|
|
|
return 0
|
|
|
|
|
|
main()
|