def update_from_chunk(self):
chunk = self.chunk[8:]
pos = 0
rifx = self.config.rifx
parents = [self]
while pos < len(chunk):
size = utils.word2py_int(chunk[pos:pos + 2], rifx)
instr_id = chunk[pos + 2:pos + 4]
instr_id = abs(utils.signed_word2py_int(instr_id, rifx))
instr = chunk[pos:pos + size]
offset = self.offset + 8 + pos
obj = cmx_instr.make_instruction(self.config, instr, offset)
name = cmx_const.INSTR_CODES.get(instr_id, '')
if name.startswith('Begin'):
parents[-1].add(obj)
parents.append(obj)
elif name.startswith('End'):
parents[-1].add(obj)
parents = parents[:-1]
elif instr_id == cmx_const.JUMP_ABSOLUTE:
parents[-1].add(obj)
sz = obj.get('jump') - offset - 8
obj.chunk += chunk[pos + 8:pos + 8 + sz]
size += sz
else:
parents[-1].add(obj)
pos += size
self.chunk = self.chunk[:8]
def make_instruction(config, chunk=None, offset=0, identifier=None, **kwargs):
instructions = INSTR_16bit if config.v16bit else INSTR_32bit
if chunk is not None:
identifier = abs(utils.signed_word2py_int(chunk[2:4], config.rifx))
cls = instructions.get(identifier, CmxInstruction)
kwargs['code'] = identifier
return cls(config, chunk, offset, **kwargs)
def update_from_chunk(self):
chunk = self.chunk[8:]
pos = 0
rifx = self.config.rifx
parents = [self]
while pos < len(chunk):
size = utils.word2py_int(chunk[pos:pos + 2], rifx)
instr_id = utils.signed_word2py_int(chunk[pos + 2:pos + 4], rifx)
instr = chunk[pos:pos + size]
obj = cmx_instr.make_instruction(self.config, instr)
name = cmx_const.INSTR_CODES.get(instr_id, '')
if name.startswith('Begin'):
parents[-1].add(obj)
parents.append(obj)
elif name.startswith('End'):
parents = parents[:-1]
parents[-1].add(obj)
else:
parents[-1].add(obj)
pos += size
self.chunk = self.chunk[:8]
def _get_code(self, code_str):
return abs(utils.signed_word2py_int(code_str, self.config.rifx))