def __init__(self, elf, data, strs):
self.elf = elf
if elf.bits == 32:
fmt = 'IIIBBH'
else:
fmt = 'IBBHQQ'
if elf.bits == 32:
self.name_index, self.value, self.size, self.info, self.other, self.shndx = \
unpack(fmt, data, target=elf)
else:
self.name_index, self.info, self.other, self.shndx, self.value, self.size = \
unpack(fmt, data, target=elf)
self.type_id = self.info & 15
self.binding = self.Binding(self.info >> 4)
self.visibility = self.Visibility(self.other & 3)
self.name = strs[self.name_index:].split('\0', 1)[0]
try:
self.type = self.Type(self.type_id)
except ValueError:
self.type = self.Type.unknown
def __init__(self, elf, data, strs):
self.elf = elf
if elf.bits == 32:
fmt = 'IIIBBH'
else:
fmt = 'IBBHQQ'
if elf.bits == 32:
self.name_index, self.value, self.size, self.info, self.other, self.shndx = \
unpack(fmt, data, target=elf)
else:
self.name_index, self.info, self.other, self.shndx, self.value, self.size = \
unpack(fmt, data, target=elf)
self.type_id = self.info & 15
self.binding = self.Binding(self.info >> 4)
self.visibility = self.Visibility(self.other & 3)
self.name = strs[self.name_index:].split('\0', 1)[0]
try:
self.type = self.Type(self.type_id)
except ValueError:
self.type = self.Type.unknown
def _parse_header(self, data):
"""
Parse the ELF header in ``data`` and populate the properties.
Args:
data(bytes): The ELF header.
"""
(magic, word_size, byte_order, version, osabi, abi_version, _), data = \
unpack('4sBBBBB7s', data[:16]), data[16:]
assert magic == self._ELF_MAGIC, 'Missing ELF magic'
assert word_size in (1, 2), 'Invalid word size'
assert byte_order in (1, 2), 'Invalid byte order'
assert version == 1, 'Invalid version'
self.osabi = self.OSABI(osabi)
self.abi_version = abi_version
(type_, machine, version), data = unpack('HHI',
data[:8],
endian=self.endian), data[8:]
self.type = self.Type(type_)
self.machine = ELF.Machine(machine)
assert version == 1, 'Invalid version'
if self.machine is ELF.Machine.i386:
arch = Target.Arch.x86
assert word_size == 1, 'Unexpected ELF64 for machine type x86'
assert byte_order == 1, 'Unexpected big-endian for machine type x86'
elif self.machine is ELF.Machine.x86_64:
arch = Target.Arch.x86
assert word_size == 2, 'Unexpected ELF32 for machine type x64_64'
assert byte_order == 1, 'Unexpected big-endian for machine type x86'
elif self.machine is ELF.Machine.arm:
arch = Target.Arch.arm
assert word_size == 1, 'Unexpected ELF64 for machine type arm'
elif self.machine is ELF.Machine.aarch64:
arch = Target.Arch.arm
assert word_size == 2, 'Unexpected ELF32 for machine type aarch64'
else:
arch = Target.Arch.unknown
self.arch = arch
self.bits = 32 * word_size
self.endian = byte_order - 1
if self.bits == 32:
fmt = 'IIIIHHHHHH'
else:
fmt = 'QQQIHHHHHH'
fmt_size = pack_size(fmt)
(self.entry, self.phoff, self.shoff, self.flags, self.hsize, self.phentsize,
self.phnum, self.shentsize, self.shnum, self.shstrndx) = \
unpack(fmt, data[:fmt_size], target=self)
def _parse_header(self, data):
"""
Parse the ELF header in ``data`` and populate the properties.
Args:
data(bytes): The ELF header.
"""
(magic, word_size, byte_order, version, osabi, abi_version, _), data = \
unpack('4sBBBBB7s', data[:16]), data[16:]
assert magic == self._ELF_MAGIC, 'Missing ELF magic'
assert word_size in (1, 2), 'Invalid word size'
assert byte_order in (1, 2), 'Invalid byte order'
assert version == 1, 'Invalid version'
self.osabi = self.OSABI(osabi)
self.abi_version = abi_version
(type_, machine, version), data = unpack('HHI', data[:8], endian=self.endian), data[8:]
self.type = self.Type(type_)
self.machine = ELF.Machine(machine)
assert version == 1, 'Invalid version'
if self.machine is ELF.Machine.i386:
arch = Target.Arch.x86
assert word_size == 1, 'Unexpected ELF64 for machine type x86'
assert byte_order == 1, 'Unexpected big-endian for machine type x86'
elif self.machine is ELF.Machine.x86_64:
arch = Target.Arch.x86
assert word_size == 2, 'Unexpected ELF32 for machine type x64_64'
assert byte_order == 1, 'Unexpected big-endian for machine type x86'
elif self.machine is ELF.Machine.arm:
arch = Target.Arch.arm
assert word_size == 1, 'Unexpected ELF64 for machine type arm'
elif self.machine is ELF.Machine.aarch64:
arch = Target.Arch.arm
assert word_size == 2, 'Unexpected ELF32 for machine type aarch64'
else:
arch = Target.Arch.unknown
self.arch = arch
self.bits = 32 * word_size
self.endian = byte_order - 1
if self.bits == 32:
fmt = 'IIIIHHHHHH'
else:
fmt = 'QQQIHHHHHH'
fmt_size = pack_size(fmt)
(self.entry, self.phoff, self.shoff, self.flags, self.hsize, self.phentsize,
self.phnum, self.shentsize, self.shnum, self.shstrndx) = \
unpack(fmt, data[:fmt_size], target=self)
def __init__(self, elf, data):
if elf.bits == 32:
fmt = 'IIIIIIII'
fmt_fields = [
'type_id',
'offset',
'vaddr',
'paddr',
'filesz',
'memsz',
'flags',
'align',
]
else:
fmt = 'IIQQQQQQ'
fmt_fields = [
'type_id',
'flags',
'offset',
'vaddr',
'paddr',
'filesz',
'memsz',
'align',
]
fmt_size = pack_size(fmt)
for key, value in zip(fmt_fields,
unpack(fmt, data[:fmt_size], target=elf)):
setattr(self, key, value)
try:
self.type = self.Type(self.type_id)
except ValueError:
self.type = self.Type.unknown
def __init__(self, elf, data):
self.elf = elf
if elf.bits == 32:
fmt = 'IIIIIIIIII'
else:
fmt = 'IIQQQQIIQQ'
fmt_size = pack_size(fmt)
for key, value in zip([
'name_index',
'type_id',
'flags',
'addr',
'offset',
'size',
'link',
'info',
'addralign',
'entsize',
], unpack(fmt, data[:fmt_size], target=elf)):
setattr(self, key, value)
try:
self.type = self.Type(self.type_id)
except ValueError:
self.type = self.Type.unknown
def __init__(self, elf, data):
self.elf = elf
if elf.bits == 32:
fmt = 'IIIIIIIIII'
else:
fmt = 'IIQQQQIIQQ'
fmt_size = pack_size(fmt)
for key, value in zip(
[
'name_index',
'type_id',
'flags',
'addr',
'offset',
'size',
'link',
'info',
'addralign',
'entsize',
],
unpack(fmt, data[:fmt_size], target=elf)
):
setattr(self, key, value)
try:
self.type = self.Type(self.type_id)
except ValueError:
self.type = self.Type.unknown
def _ensure_dynamic_section_loaded(self):
if self._dynamic_section_entries is None:
try:
section = self.get_section_header('.dynamic')
data = section.content
except KeyError:
data = []
if self.bits == 32:
fmt = 'iI'
else:
fmt = 'QQ'
fmt_size = pack_size(fmt)
self._dynamic_section_entries = [
self.DynamicSectionEntry(*unpack(fmt, data[i:i + fmt_size], target=self))
for i in range(0, len(data), fmt_size)
]
def _ensure_dynamic_section_loaded(self):
if self._dynamic_section_entries is None:
try:
section = self.get_section_header('.dynamic')
data = section.content
except KeyError:
data = []
if self.bits == 32:
fmt = 'iI'
else:
fmt = 'QQ'
fmt_size = pack_size(fmt)
self._dynamic_section_entries = [
self.DynamicSectionEntry(
*unpack(fmt, data[i:i + fmt_size], target=self))
for i in range(0, len(data), fmt_size)
]
def __init__(self, elf, data):
if elf.bits == 32:
fmt = 'IIIIIIII'
fmt_fields = [
'type_id',
'offset',
'vaddr',
'paddr',
'filesz',
'memsz',
'flags',
'align',
]
else:
fmt = 'IIQQQQQQ'
fmt_fields = [
'type_id',
'flags',
'offset',
'vaddr',
'paddr',
'filesz',
'memsz',
'align',
]
fmt_size = pack_size(fmt)
for key, value in zip(
fmt_fields,
unpack(fmt, data[:fmt_size], target=elf)
):
setattr(self, key, value)
try:
self.type = self.Type(self.type_id)
except ValueError:
self.type = self.Type.unknown
def read_float_binary():
return unpack('d', fp.read(8), target=MARSHAL_TARGET)[0]