def build_guard_token(self,
op,
frame_depth,
arglocs,
offset,
fcond,
extra_offset=-1,
extra_cond=-1):
descr = op.getdescr()
assert isinstance(descr, AbstractFailDescr)
gcmap = allocate_gcmap(self, frame_depth, JITFRAME_FIXED_SIZE)
faildescrindex = self.get_gcref_from_faildescr(descr)
token = GuardToken(self.cpu,
gcmap,
descr,
failargs=op.getfailargs(),
fail_locs=arglocs,
guard_opnum=op.getopnum(),
frame_depth=frame_depth,
faildescrindex=faildescrindex)
token.fcond = fcond
token.extra_offset = extra_offset
token.extra_cond = extra_cond
return token
