def next_argument(self, isfloat, size, signed):
if size == -1:
size = 8
if isfloat:
float_state = self.tracer.floating_register_state
if self.float_argument_registers and size == 8:
argument_name = self.float_argument_registers.pop(0)
bytes = getattr(float_state, argument_name).xmm_reg
value = ctypes.string_at(ctypes.pointer(bytes), 16)
return struct.unpack('d', value[:8])[0]
else:
raw = self.tracer.read_memory(self.stack_argument_address,
size)
if size in (4, 8):
self.stack_argument_address += 8
return struct.unpack("f" if size == 4 else "d", raw)[0]
elif size == 10:
self.stack_argument_address += 16
return util.unpack_long_double(raw)
else:
raise NotImplementedError('Unknown type')
else:
if self.int_argument_registers:
registers = self.tracer.general_register_state
raw = getattr(registers, self.int_argument_registers.pop(0))
return util.convert_int(raw, size, signed)
else:
address = self.stack_argument_address
raw = self.tracer.read_struct(address, "Q")[0]
value = util.convert_int(raw, size, signed)
self.stack_argument_address += 8
return value
def get_return_value(self, isfloat, size, signed):
if size == -1:
size = 8
if isfloat:
return self.get_float_return_value(size)
else:
raw = self.tracer.general_register_state.rax
return util.convert_int(raw, size, signed)
def next_argument(self, isfloat, size, signed):
if size == -1:
size = 4
if isfloat:
value = self.tracer.read_memory(self.current_argument, size)
if size == 4:
self.current_argument += 4
return struct.unpack("f", value)[0]
elif size == 8:
self.current_argument += 8
return struct.unpack("d", value)[0]
elif size == 10:
self.current_argument += 16
return util.unpack_long_double(value)
else:
raise NotImplementedError('Unknown type')
else:
raw = self.tracer.read_struct(self.current_argument, "I")[0]
value = util.convert_int(raw, size, signed)
self.current_argument += 4
return value