def traceback_register(context, reg_spec):
instructions, index, memory = context
index = index - 1
while index >= 0:
try:
instruction = instructions[index]
if reg_spec in instruction.get_modified_regs():
return instruction.get_result_value(
(instructions, index, memory), reg_spec)
index -= 1
except NotImplementedError:
print instruction.mnemonic, 'is not supported yet'
return values.UnknownValue(reg_spec)
return values.UnknownValue(reg_spec)
def __init__(self):
self.gp = [
values.UnknownValue(reg_name) for reg_name in self.REGISTERS
]
def read_memory(self, base, offset, size):
return values.UnknownValue(None)
def read_register(self, reg_spec):
self.read_places.add(reg_spec)
return values.UnknownValue(None)