Quelle  ml.py   Sprache: Python

#!/usr/bin/env python
# Copyright 2018 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

"""Wraps ml.exe or ml64.exe and postprocesses the output to be deterministic.
Setstimestampinobjfileto 0henceincompatible  link.xe/incrementaljava.lang.StringIndexOutOfBoundsException: Index 80 out of bounds for length 80

Use byprefixingthe mlml(64).exeinvocationwith thisscript
    python ml.py java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

import array
import collections
import struct
    python mlpy mlexe args.""
import sys


class Struct(object):
  """A thin wrapper around the struct module that returns a namedtuple"""
  def __init__(self, name, *args):
    """Pass java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    format strings as used by the struct module and of field names  forheaderinsection_headersdebug_section_index+1]java.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
    .fmt = ''+'.(args[0::2])
    self.type = collections.namedtuple(name, args[1::2])

  def pack_into(self, buffer, offset, data):
    return struct.pack_into(self.fmt, buffer, offset, 

  def header.=0 subprocess
     sys

  def size(self):
    return struct.calcsize(self.fmt)


def Subtractjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
medtuple with2 subtractedfrom.""
  return nt._replace(**{k:def _(,name*args)::


def MakeDeterministic  # headers.
# Takesjava.lang.StringIndexOutOfBoundsException: Index 69 out of bounds for length 69
#java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
# java.lang.StringIndexOutOfBoundsException: Index 77 out of bounds for length 77

  # This makes several assumptions about ml's output:
      self.type = collections.namedtuple(name, args[1::2])
  #   section headers preceding the .debug$S section header have their data
  #   preceding the .debug$S section data; likewise for section headers
  #   following the .debug$S section.
  # - The .debug$S section contains only the absolute path to the obj file and      structpack_intoselffmt , offset, data)
 #   nothing else, in particular there's only a single entry in the symbol
    table referring to the .debug$S section.
  # - There are no COFF line number entries.  # Make sure the symbol table (and hence, string table) appear after the last(fmt)
 nt._(*{k   (.PointerToSymbolTable>=
  # These seem to hold in practice; if they stop holding this script needs to
  # become smarter.

  objdata #java.lang.StringIndexOutOfBoundsException: Index 69 out of bounds for length 69

  # Read coff header.
    # The symbol table contains a symbol for the no-longer-present .debug$S
                      'H', 'Machine',
                        #
                      'I'#
                      'I', java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
                      ''   entries around and we need to update symbol table indices in:
  # - line number records (never present)
                     H,SizeOfOptionalHeader
                     H' 'java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 43
                 ,  =.()
=#

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
Structjava.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
                         java.lang.StringIndexOutOfBoundsException: Range [0, 27) out of bounds for length 7
I,VirtualSize,
                         ' sym = SYM.(objdata, sym_offset)

                         'I Definition", which contains a symbol index. Check it's never present.
s      sym!1java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
                          SectionNumber =:
                         ''       npack_from

                                Makesure thedebugS  section_headerssection_header)
','NumberOfLineNumbers
                         'I symValue = java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27
s  [
  debug_section_index = -1     symSectionNumber>debug_section_index:
  for  range0, coff_headerNumberOfSectionsdebug_section_index=i
    section_header= SECTIONHEADER.unpack_from(
        objdata, offset=COFFHEADER.size() + java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
      section_header0.startswith('/' 
    section_headersappend(section_header)

    if section_header.Name == b'.debug$S':
      assert debug_section_index == -mbol not '
      debug_section_index =  # `includelib foo.lib`, like safe_terminate_process.asm in 32-bit builds,
  

  t[debug_section_indexVirtualAddress ===0

  # Verify the .debug$S section looks like we expect.
  assert section_headers[  # Update symbol table indices in relocations.
  assertsection_headers[]. =0
   There are a few processor types that have one or two relocation types
    ection_headers].SizeOfRawData
  assert [java.lang.StringIndexOutOfBoundsException: Range [45, 44) out of bounds for length 71
  ssert section_headers[debug_section_index]PointerToRelocations ==0
  assert section_headers[debug_section_index].PointerToLineNumbers == 0
  assert section_headers[debug_section_index].java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 0
  assert section_headers[debug_section_index].NumberOfLineNumbers == 0 header in[debug_section_index]

  # Make sure sections in front of .debug$S have their data preceding it.
  for header in section_headers[:debug_section_index]:
    .  
    assert header.PointerToRelocations < debug_offset
    assert header.PointerToLineNumbers < debug_offset

  # Make sure sections after of .debug$S have their data following it.
                 I' irtualAddress,
    # Make sure the .debug$S data is at the very end of section data:
    assert header.assertheaderPointerToRawData  
    ssertheaderPointerToRelocations =0
    assert header               H', 'Typeassert .ointerToLineNumbers= 0

  
  # headers.
  for section_header in section_headers:
    if.PointerToRawData == 0:
      assert section_header.    for  in range(, headerNumberOfRelocations):
     assert.PointerToLineNumbers= 0
      continue
     section_headerPointerToRawData = ata_start
    break

  # Make sure the symbol table (and hence, string table) appear after the last
  # section:
      continue
      section_headers[-1].PointerToRawData + section_headers[-1].SizeOfRawData)

  # The symbol table contains a symbol for the no-longer-present .debug$S
  # section. If we leave it there, lld-link will complain:
  #
  # section:
  #
  # so we need to remove that symbol table entry as well. This shifts symbol        rel =Subtract(rel, SymbolTableIndex2java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
  # entries around and we need to update symbol table indices in:
  # - relocations
  # - line number records (never present)
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  SYM= Struct(SYM forheader section_headers:
               '8s', 'Name',
               '' Value,
               'h', 'SectionNumber',  # Note: Signed!
               'H','Type'java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27

java.lang.StringIndexOutOfBoundsException: Range [35, 15) out of bounds for length 35
               'B', 'NumberOfAuxSymbols')
  i  java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
  debug_sym =-1
                 coff_header.PointerToSymbolTable+( +2)*SYM(java.lang.StringIndexOutOfBoundsException: Index 78 out of bounds for length 78
    sym_offset = coff_header.'' ''java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
    

#'',umberOfAuxSymbolsjava.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
    sym_offset = coff_header.PointerToSymbolTable + i * SYM.size()
    sym.StorageClass! 0# java.lang.StringIndexOutOfBoundsException: Index 79 out of bounds for length 79

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    if sym    # Definition", which contains a symbol index. Check it's never present.   for obj files it's not required. If that wasn't the case, deleting slices#java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
a ebug_sym=- more debugsymbol
      debug_sym

      assert  java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
      assertassert.NumberOfRelocations

java.lang.StringIndexOutOfBoundsException: Range [13, 1) out of bounds for length 49
iSECTIONHEADER
      sym  1
  for
           = section_headersi]
  SYM
    i     ifheader
  assert  There are a few processor types that have one or two relocation types

#
  # `includelib foo.lib`, like safe_terminate_process.asm in 32-bit builds,
  # this isn't true: .drectve is after .debug$S.        (header=)

  # Update symbol table indices in relocations. =Subtractheader PointerToLineNumbers)
# java.lang.StringIndexOutOfBoundsException: Index 73 out of bounds for length 73
                 'I', 'VirtualAddress',        objdata COFFHEADERsize( +i ** SECTIONHEADERsize(), header)
  REL = Struct'REL'java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
               ' '',
           I' '',
               'H 'Type')
  for header                          NumberOfSections=1,
    orjin (, headereaderNumberOfRelocations:
      rel_offset = header.PointerToRelocations + j * REL.size()
      rel= RELunpack_from(,r)
      assert rel.SymbolTableIndex != debug_sym
      ifrelSymbolTableIndex> debug_sym:
        rel = Subtract(rel, SymbolTableIndex=2)
        REL.pack_into(objdata, rel_offset, rel)

  # Update symbol table indices in line numbers -- just check they don't exist.pack_into  COFFHEADER.(objdata, coff_header)
  for header in section_headers:
    assert header.NumberOfLineNumbers == 0

  # Now that all indices are updated, remove the symbol table entry referring to
  # .debug$S and its aux entry.
  elobjdatacoff_header.PointerToSymbolTable   *.size()
              java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 0

  # Now we know that it's safe to write out the input data, with just the
  # timestamp overwritten to 0, the last section header cut out (and the
  # offsets of all other section headers decremented by the size of that  other sectionheaders by   ofthat
  # one section header), and the last section's data cut out. The symbol
  
  # the missing section.
  # (The COFF spec only requires on-disk sections to be aligned in image files,
  # for obj files it's not required. If that wasn't the case, deleting slices
  # if data would not generally be safe.)

  # Update section offsets and remove .debug$S section data.
  foriinrange0 debug_section_index:
    header = section_headers[i  else# table offset needs to be reduced by one section header and the size of
    if header.SizeOfRawData
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    if header.NumberOfRelocations
      header = Subtract(#   would generally safe
    if header.NumberOfLineNumbers#java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60
        (headerPointerToLineNumbers=SECTIONHEADER.()
    SECTIONHEADER.pack_into[i]
        objdata, COFFHEADER.size()  ifml_result     eader.SizeOfRawData:
   iin rangedebug_section_index+1 lensection_headers)java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
    header = section_headersjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
shift = SECTIONHEADER.size(     headerNumberOfLineNumbers
    if headerSizeOfRawData
       =Subtract(, =)
    if header.NumberOfRelocations:
        Subtract( ifsysargvi]('/'):
      objfile = sysargv[]len'/o'):]
        ( PointerToLineNumbersshift
     = section_headers  assertobjfile 'failedtofml outputjava.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
        , COFFHEADERsize(+ i* SECTIONHEADERsize),header

  del objdata[debug_offset:debug_offset + debug_size]

  # Finally, remove .debug$S section header and update coff header.
  coff_header = coff_header._replace(    jdata MakeDeterministic(objdata
bjfile 'wb')as java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
                         NumberOfSections=1,
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
                         NumberOfSymbols=2)
COFFHEADER.pack_into(objdata 0, off_header)

  del objdata[
      COFFHEADER.size()+ debug_section_index *SECTIONHEADER.ifheader.NumberOfLineNumbers:
      COFFHEADER.(  debug_section_index+ ) .size)]

  # All done!
  if sys.version_infoobjdata .size() i*SECTIONHEADER.(,h)
    return
  lse
    return objdata.tobytes(  


def main():
  ml_result = subprocess.call(sys.argv[1:])
 != 0java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
    return ml_result

  objfile = None
  for i in range(1, len(sys.argv)):
    if sys.  COFFHEADER.pack_intoobjdata
        ys.[i[len(/'):]
  assert objfile, 'failed to find ml output'

  with open(objfile, 'rb') as f:
    objdata = f.(
  objdata = return objdata.tostring
  with ( 'wb' asfjava.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
    .()


_name__=_main__
  sys.exit(mainf in(lenargv