def read(parser, prototype):
parser = _State(parser)
size = parser.stream.read_uleb128()
if size == 0:
return False
if not parser.stream.check_data_available(size):
errprint("File truncated")
return False
start = parser.stream.pos
r = True
r = r and _read_flags(parser, prototype)
r = r and _read_counts_and_sizes(parser, prototype)
r = r and _read_instructions(parser, prototype)
r = r and _read_constants(parser, prototype)
r = r and _read_debuginfo(parser, prototype)
end = parser.stream.pos
if r:
assert end - start == size, "Incorrectly read: from {0} to {1} ({2}) instead of {3}".format(
start, end, end - start, size
)
return r
def read(parser, prototype):
parser = _State(parser)
size = parser.stream.read_uleb128()
if size == 0:
return False
if not parser.stream.check_data_available(size):
errprint("File truncated")
return False
start = parser.stream.pos
r = True
r = r and _read_flags(parser, prototype)
r = r and _read_counts_and_sizes(parser, prototype)
r = r and _read_instructions(parser, prototype)
r = r and _read_constants(parser, prototype)
r = r and _read_debuginfo(parser, prototype)
end = parser.stream.pos
if r:
assert end - start == size, \
"Incorrectly read: from {0} to {1} ({2}) instead of {3}"\
.format(start, end, end - start, size)
return r
def _read_version(state, header):
header.version = state.stream.read_byte()
if header.version > _MAX_VERSION:
errprint("Version {0}: propritary modifications", header.version)
return False
return True
def _read_flags(parser, prototype):
flags = parser.stream.read_byte()
bits = flags
prototype.flags.has_ffi = bool(flags & FLAG_HAS_FFI)
bits &= ~FLAG_HAS_FFI
prototype.flags.has_iloop = bool(flags & FLAG_HAS_ILOOP)
bits &= ~FLAG_HAS_ILOOP
prototype.flags.has_jit = not (flags & FLAG_JIT_DISABLED)
bits &= ~FLAG_JIT_DISABLED
prototype.flags.has_sub_prototypes = bool(flags & FLAG_HAS_CHILD)
bits &= ~FLAG_HAS_CHILD
prototype.flags.is_variadic = bool(flags & FLAG_IS_VARIADIC)
bits &= ~FLAG_IS_VARIADIC
# errprint ("prototype.flags.has_ffi %d" % prototype.flags.has_ffi)
# errprint ("prototype.flags.has_iloop %d" % prototype.flags.has_iloop)
# errprint ("prototype.flags.has_jit %d" % prototype.flags.has_jit)
# errprint ("prototype.flags.has_sub_prototypes %d" % prototype.flags.has_sub_prototypes)
# errprint ("prototype.flags.is_variadic %d" % prototype.flags.is_variadic)
if bits != 0:
errprint("Unknown prototype flags: {0:08b}", bits)
return False
return True
def _read_version(state, header):
header.version = state.stream.read_byte()
if header.version > _MAX_VERSION:
errprint("Version {0}: propritary modifications",
header.version)
return False
return True
def _read_header(parser, header):
if not ljd.rawdump.header.read(parser, header):
errprint("Failed to read raw-dump header")
return False
if header.flags.is_big_endian:
parser.stream.data_byteorder = 'big'
else:
parser.stream.data_byteorder = 'little'
return True
def _read_header(parser, header):
if not ljd.rawdump.header.read(parser, header):
errprint("Failed to read raw-dump header")
return False
if header.flags.is_big_endian:
parser.stream.data_byteorder = 'big'
else:
parser.stream.data_byteorder = 'little'
return True
def _read_prototypes(state, prototypes):
while not state.stream.eof():
prototype = ljd.bytecode.prototype.Prototype()
if not ljd.rawdump.prototype.read(state, prototype):
if state.stream.eof():
break
else:
errprint("Failed to read prototype")
return False
prototypes.append(prototype)
return True
def _read_prototypes(state, prototypes):
while not state.stream.eof():
prototype = ljd.bytecode.prototype.Prototype()
if not ljd.rawdump.prototype.read(state, prototype):
if state.stream.eof():
break
else:
errprint("Failed to read prototype")
return False
prototypes.append(prototype)
return True
def _read_prototypes(state, prototypes):
while not state.stream.eof():
prototype = ljd.bytecode.prototype.Prototype()
#print ("good rwsdump->parser->read_prototypes")
if not ljd.rawdump.prototype.read(state, prototype):
if state.stream.eof():
break
else:
errprint("Failed to read prototype")
return False
# dump("prototype",prototype,0)
prototypes.append(prototype)
return True
def _read_flags(parser, header):
bits = parser.stream.read_uleb128()
header.flags.is_big_endian = bits & _FLAG_IS_BIG_ENDIAN
bits &= ~_FLAG_IS_BIG_ENDIAN
header.flags.is_stripped = bits & _FLAG_IS_STRIPPED
bits &= ~_FLAG_IS_STRIPPED
header.flags.has_ffi = bits & _FLAG_HAS_FFI
bits &= ~_FLAG_HAS_FFI
if bits != 0:
errprint("Unknown flags set: {0:08b}", bits)
return False
return True
def _read_flags(parser, header):
bits = parser.stream.read_uleb128()
header.flags.is_big_endian = bits & _FLAG_IS_BIG_ENDIAN
bits &= ~_FLAG_IS_BIG_ENDIAN
header.flags.is_stripped = bits & _FLAG_IS_STRIPPED
bits &= ~_FLAG_IS_STRIPPED
header.flags.has_ffi = bits & _FLAG_HAS_FFI
bits &= ~_FLAG_HAS_FFI
if bits != 0:
errprint("Unknown flags set: {0:08b}", bits)
return False
return True
def read(parser):
global _MAP
codeword = parser.stream.read_uint(4)
opcode = codeword & 0xFF
instruction_class = _MAP[opcode]
if instruction_class is None:
errprint("Warning: unknown opcode {0:08x}", opcode)
instruction_class = instructions.UNKNW # @UndefinedVariable
instruction = instruction_class()
if instruction_class.opcode != opcode:
instruction.opcode = opcode
_set_instruction_operands(parser, codeword, instruction)
return instruction
def parse(filename):
parser = _State()
parser.stream.open(filename)
header = ljd.rawdump.header.Header()
r = True
try:
r = r and _read_header(parser, header)
r = r and _read_prototypes(parser, parser.prototypes)
except IOError as e:
errprint("I/O error while reading dump: {0}", str(e))
r = False
if r and not parser.stream.eof():
errprint("Stopped before whole file was read, something wrong")
r = False
if r and len(parser.prototypes) != 1:
errprint("Invalid prototypes stack order")
r = False
parser.stream.close()
if r:
return header, parser.prototypes[0]
else:
return None, None
def parse(filename):
parser = _State()
parser.stream.open(filename)
header = ljd.rawdump.header.Header()
r = True
try:
r = r and _read_header(parser, header)
r = r and _read_prototypes(parser, parser.prototypes)
except IOError as e:
errprint("I/O error while reading dump: {0}", str(e))
r = False
if r and not parser.stream.eof():
errprint("Stopped before whole file was read, something wrong")
r = False
if r and len(parser.prototypes) != 1:
errprint("Invalid prototypes stack order")
r = False
parser.stream.close()
if r:
return header, parser.prototypes[0]
else:
return None, None
def _read_flags(parser, header):
bits = parser.stream.read_uleb128()
header.flags.is_big_endian = bits & _FLAG_IS_BIG_ENDIAN
bits &= ~_FLAG_IS_BIG_ENDIAN
header.flags.is_stripped = bits & _FLAG_IS_STRIPPED
bits &= ~_FLAG_IS_STRIPPED
header.flags.has_ffi = bits & _FLAG_HAS_FFI
bits &= ~_FLAG_HAS_FFI
# zzw.20180714 pitch: flag value is according to parser.flag when parse proto, not by header.flags
parser.flags.is_big_endian = header.flags.is_big_endian
parser.flags.is_stripped = header.flags.is_stripped
parser.flags.is_big_endian = header.flags.has_ffi
if bits != 0:
errprint("Unknown flags set: {0:08b}", bits)
return False
return True
def read(parser):
global _MAP
codeword = parser.stream.read_uint(4)
# errprint ("codeword %08x" % codeword, file=sys.stderr)
opcode = codeword & 0xFF
# errprint ("opcode %x" % opcode)
instruction_class = _MAP[opcode]
if instruction_class is None:
errprint("Warning: unknown opcode {0:08x}", opcode)
instruction_class = instructions.UNKNW # @UndefinedVariable #zzw.20180714
instruction = instruction_class()
if instruction_class.opcode != opcode:
instruction.opcode = opcode
# errprint ("instruction.opcode %x name %s" % (instruction.opcode,instruction.name))
_set_instruction_operands(parser, codeword, instruction)
return instruction
def _read_flags(parser, prototype):
bits = parser.stream.read_byte()
prototype.flags.has_ffi = bool(bits & FLAG_HAS_FFI)
bits &= ~FLAG_HAS_FFI
prototype.flags.has_iloop = bool(bits & FLAG_HAS_ILOOP)
bits &= ~FLAG_HAS_ILOOP
prototype.flags.has_jit = not (bits & FLAG_JIT_DISABLED)
bits &= ~FLAG_JIT_DISABLED
prototype.flags.has_sub_prototypes = bool(bits & FLAG_HAS_CHILD)
bits &= ~FLAG_HAS_CHILD
prototype.flags.is_variadic = bool(bits & FLAG_IS_VARIADIC)
bits &= ~FLAG_IS_VARIADIC
if bits != 0:
errprint("Unknown prototype flags: {0:08b}", bits)
return False
return True
def _read_version(state, header):
header.version = state.stream.read_byte()
if header.version != gconfig.gBCVersion:
errprint("header.version {0} is not equals to gconfig.gBCVersion {1}", header.version, gconfig.gBCVersion)
errprint("please modify gBCVersion in gconfig.py to make sure gconfig.gBCVersion == header.version")
return False
if header.version > _MAX_VERSION:
errprint("Version {0}: propritary modifications",
header.version)
return False
return True
def _check_magic(state):
if state.stream.read_bytes(3) != _MAGIC:
errprint("Invalid magic, not a LuaJIT format")
return False
return True
def _check_magic(state):
if state.stream.read_bytes(3) != _MAGIC:
errprint("Invalid magic, not a LuaJIT format")
return False
return True
