class Symtbl:
__subs__ = {}
def __init__(self, **kwargs):
self.__dict__ = {**kwargs}
def subtable(self, sym, off, table):
setattr(self, sym, off)
self.__subs__[sym] = table
class __InnerTable__:
def __init__(self,off,tbl):
self.off = off
self.tbl = tbl
def __getattribute__(self,sym):
if(sym in ['off','tbl','__class__']):
return object.__getattribute__(self,sym)
addr = getattr(self.tbl,sym)
if(type(addr)==int):
return addr + self.off
if(type(addr)==self.__class__):
addr.off += self.off
return addr
return addr
def __setattr__(self,sym,off):
if(sym in ['off','tbl']):
return object.__setattr__(self,sym,off)
return setattr(self.tbl,sym,off-self.off)
def __str__(self):
return str(self.tbl)
def __getattribute__(self, sym):
addr = object.__getattribute__(self,sym)
if(sym == '__subs__'):return addr
if(sym == 'base'):return 0
if(sym in self.__subs__):
return self.__InnerTable__(addr,self.__subs__[sym])
return addr
def adjust(self, off):
self.__dict__ = {k:v+off for k,v in self.__dict__.items()}
def rebase(self, sym):
self.adjust(-sym)
def __str__(self):
return __str__(self,self.__dict__)
class Memmap:
def __init__(self, tbl, sym, addr):
self.__tbl__ = tbl
self.base = addr - sym
def __getattribute__(self, sym):
if(sym in ['__tbl__','base']):
return object.__getattribute__(self, sym)
addr = getattr(self.__tbl__, sym)
if(type(addr)==Symtbl.__InnerTable__):
addr.off += self.base
return addr
return self.base + addr
def __setattr__(self, sym, addr):
if(sym in ['__tbl__','base']):
return object.__setattr__(self,sym,addr)
return setattr(self.__tbl__,sym,addr-self.base)
def __str__(self):
s = __str__(self,self.__tbl__.__dict__)
pos = -1
for i in range(2):
pos = s.find('\n',pos+1)
s = s[:pos] + __tbl_format__.format(hex(self.base),'base') + s[pos:]
return s
__tbl_format__ = '\n{:<20} {:<20}'
def __str__(self,tbl):
s = 'symbols: ' + str(len(tbl))
s += __tbl_format__.format('ADDRESS', 'SYMBOL')
for sym,off in sorted(tbl.items(),key=lambda x:x[1]):
addr = getattr(self,sym)
if(type(addr)==Symtbl.__InnerTable__):
s += __tbl_format__.format(hex(addr.off),f'[{sym}]')
else:
s += __tbl_format__.format(hex(addr),sym)
return s
