def get_flag_write_low_level_il(self, op, size, write_type, flag, operands, il):
if flag == 'CY':
if op == LowLevelILOperation.LLIL_RRC:
return il.and_expr(1, il.reg(1, operands[0]), il.const(1, 0x01))
elif op == LowLevelILOperation.LLIL_RLC:
return il.and_expr(1, il.reg(1, operands[0]), il.const(1, 0x80))
return Architecture.perform_get_flag_write_low_level_il(self, op, size, write_type, flag, operands, il)
def get_flag_write_low_level_il(self, op, size, write_type, flag, operands,
il):
flag_il = Z80IL.gen_flag_il(op, size, write_type, flag, operands, il)
if flag_il:
return flag_il
return Architecture.get_flag_write_low_level_il(
self, op, size, write_type, flag, operands, il)
def perform_get_flag_write_low_level_il(self, op, size, write_type, flag, operands, il): if flag == 'c': if (op == LowLevelILOperation.LLIL_SUB) or (op == LowLevelILOperation.LLIL_SBB): # Subtraction carry flag is inverted from the commom implementation return il.not_expr(0, self.get_default_flag_write_low_level_il(op, size, FlagRole.CarryFlagRole, operands, il)) # Other operations use a normal carry flag return self.get_default_flag_write_low_level_il(op, size, FlagRole.CarryFlagRole, operands, il) return Architecture.perform_get_flag_write_low_level_il(self, op, size, write_type, flag, operands, il)
def get_flag_write_low_level_il(self, op, size, write_type, flag, operands,
il):
return Architecture.get_flag_write_low_level_il(
self, op, size, write_type, flag, operands, il)
def __init__(self):
Architecture.__init__(self)
basepath = os.path.dirname(os.path.realpath(__file__))
with open(os.path.join(basepath, 'opcodes.json')) as fin:
self.opcodes = json.load(fin)