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class Symtbl:
def __init__(self, **kwargs):
self.__dict__ = {**kwargs}
def adjust(self, off):
self.__dict__ = {k:v+off for k,v in self.__dict__.items()}
def rebase(self, sym):
self.adjust(-sym)
def __len__(self):
vals = self.__dict__.values()
if len(vals)<1:
return 0
hi = max(max(vals),0)
lo = min(min(vals),0)
return hi-lo
def __str__(self):
tbl_format = '\n{:<20} {:<20}'
s = 'len: ' + str(len(self.__dict__))
s += tbl_format.format('ADDRESS', 'SYMBOL')
for sym,addr in sorted(self.__dict__.items(),key=lambda x:x[1]):
s += tbl_format.format(hex(addr),sym)
return s
class Memmap:
def __init__(self, tbl, sym, addr):
object.__setattr__(self,'__tbl__', tbl)
base = addr if sym == 'base' else addr - getattr(self.__tbl__, sym)
object.__setattr__(self,'base', base)
def __getattribute__(self, sym):
if sym == '__tbl__' or sym == 'base':
return object.__getattribute__(self, sym)
a = getattr(self.__tbl__, sym)
return self.base + a
def __setattr__(self, k, v):
raise TypeError('Memmaps are Read-Only! Modify offsets with Symtbl instead!')
def __len__(self):
return len(self.__tbl__)
def __str__(self):
tbl_format = '\n{:<20} {:<20}'
s = 'len: ' + str(len(self.__tbl__.__dict__)+1)
s += tbl_format.format('ADDRESS', 'SYMBOL')
s += tbl_format.format(hex(self.base),'base')
for sym,addr in sorted(self.__tbl__.__dict__.items(),key=lambda x:x[1]):
s += tbl_format.format(hex(addr+self.base),sym)
return s
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