def _loadMacho(vw, filebytes, filename=None):
# We fake them to *much* higher than norm so pointer tests do better...
baseaddr = vw.config.viv.parsers.macho.baseaddr
if filename == None:
filename = 'macho_%.8x' % baseaddr # FIXME more than one!
# Check for the FAT binary magic...
if filebytes[:4].encode('hex') in ('cafebabe', 'bebafeca'):
archhdr = None
fatarch = vw.config.viv.parsers.macho.fatarch
archlist = []
offset = 0
fat = vs_macho.fat_header()
offset = fat.vsParse(filebytes, offset=offset)
for i in xrange(fat.nfat_arch):
ar = vs_macho.fat_arch()
offset = ar.vsParse(filebytes, offset=offset)
archname = vs_macho.mach_cpu_names.get(ar.cputype)
if archname == fatarch:
archhdr = ar
break
archlist.append((archname,ar))
if not archhdr:
# If we don't have a specified arch, exception!
vw.vprint('Mach-O Fat Binary Architectures:')
for archname, ar in archlist:
vw.vprint('0x%.8x 0x%.8x %s' % (ar.offset, ar.size, archname))
raise Exception('Mach-O Fat Binary: Please specify arch with -O viv.parsers.macho.fatarch="<archname>"')
filebytes = filebytes[archhdr.offset:archhdr.offset+archhdr.size]
# Instantiate the parser wrapper and parse bytes
macho = vs_macho.mach_o()
macho.vsParse(filebytes)
arch = vs_macho.mach_cpu_names.get(macho.mach_header.cputype)
if arch == None:
raise Exception('Unknown MACH-O arch: %.8x' % macho.mach_header.cputype)
# Setup arch/plat/fmt
vw.setMeta('Architecture', arch)
vw.setMeta("Platform", "Darwin")
vw.setMeta("Format", "macho")
vw.setMeta('DefaultCall', archcalls.get(arch,'unknown'))
# Add the file entry
hash = "unknown hash"
if os.path.exists(filename):
hash = viv_parsers.md5File(filename)
fname = vw.addFile(filename, baseaddr, hash)
# Add the memory maps and segments from the macho definition
for segname, rva, perms, segbytes in macho.getSegments():
segbase = baseaddr + rva
vw.addMemoryMap(segbase, perms, fname, segbytes)
vw.addSegment(segbase, len(segbytes), segname, fname)
# Add the library dependancies
for libname in macho.getLibDeps():
# FIXME hack....
libname = libname.split('/')[-1]
libname = libname.split('.')[0].lower()
vw.addLibraryDependancy(libname)
return fname
def _loadMacho(vw, filebytes, filename=None, baseaddr=None):
# We fake them to *much* higher than norm so pointer tests do better...
if baseaddr is None:
baseaddr = vw.config.viv.parsers.macho.baseaddr
if filename is None:
filename = 'macho_%.8x' % baseaddr # FIXME more than one!
# Check for the FAT binary magic...
if filebytes[:4].encode('hex') in ('cafebabe', 'bebafeca'):
archhdr = None
fatarch = vw.config.viv.parsers.macho.fatarch
archlist = []
offset = 0
fat = vs_macho.fat_header()
offset = fat.vsParse(filebytes, offset=offset)
for i in xrange(fat.nfat_arch):
ar = vs_macho.fat_arch()
offset = ar.vsParse(filebytes, offset=offset)
archname = vs_macho.mach_cpu_names.get(ar.cputype)
if archname == fatarch:
archhdr = ar
break
archlist.append((archname,ar))
if not archhdr:
# If we don't have a specified arch, exception!
vw.vprint('Mach-O Fat Binary Architectures:')
for archname, ar in archlist:
vw.vprint('0x%.8x 0x%.8x %s' % (ar.offset, ar.size, archname))
raise Exception('Mach-O Fat Binary: Please specify arch with -O viv.parsers.macho.fatarch="<archname>"')
filebytes = filebytes[archhdr.offset:archhdr.offset+archhdr.size]
# Instantiate the parser wrapper and parse bytes
macho = vs_macho.mach_o()
macho.vsParse(filebytes)
arch = vs_macho.mach_cpu_names.get(macho.mach_header.cputype)
if arch is None:
raise Exception('Unknown MACH-O arch: %.8x' % macho.mach_header.cputype)
# Setup arch/plat/fmt
vw.setMeta('Architecture', arch)
vw.setMeta("Platform", "Darwin")
vw.setMeta("Format", "macho")
vw.setMeta('DefaultCall', archcalls.get(arch,'unknown'))
# Add the file entry
hash = "unknown hash"
if os.path.exists(filename):
hash = viv_parsers.md5File(filename)
fname = vw.addFile(filename, baseaddr, hash)
# Add the memory maps and segments from the macho definition
for segname, rva, perms, segbytes in macho.getSegments():
segbase = baseaddr + rva
vw.addMemoryMap(segbase, perms, fname, segbytes)
vw.addSegment(segbase, len(segbytes), segname, fname)
# Add the library dependancies
for libname in macho.getLibDeps():
# FIXME hack....
libname = libname.split('/')[-1]
libname = libname.split('.')[0].lower()
vw.addLibraryDependancy(libname)
return fname