def run(self, brk):
bid = brk.GetId()
logger.debug("Breakpoint run %s %d", str(brk), bid)
if bid in self.callbacks:
dosbox.Dosbox().addCallback(self.callbacks[bid], self.brk2hash(brk))
if brk.GetOnce():
del self.callbacks[bid]
def readEnv(psp, progName=False):
d = dosbox.Dosbox()
ret = {}
envs = struct.unpack('<H', d.mem((psp << 4) + 0x2C, 2))[0]
if envs == 0:
return None
mcb = struct.unpack('<BHH', d.mem((envs - 1) << 4, 5))
env = d.mem(envs << 4, mcb[2] * 16)
last = 0
for x in env.split('\x00'):
if last == 2:
if progName:
return x
ret['programName'] = x
break
if last > 0:
last += 1
continue
if len(x) == 0:
last = 1
continue
if not progName:
s = x.split('=')
ret[s[0]] = s[1]
return ret
def _onExec(self, **kwargs):
psp = kwargs.get('value')
nm = dosbox.readEnv(psp, True)
logger.debug("check exec %s", nm)
if nm.lower().endswith(self.fname):
self.psp = psp
breaks.Breaks().delExec()
self._prepare()
else:
dosbox.Dosbox().cont()
def __init__(self, fname, symbols=None):
self.fname = fname.lower()
self.symbols = symbols
self.psp = self._checkLoaded()
self.base = None
self.dseg = None
if self.psp:
if self._prepare():
dosbox.Dosbox().cont()
else:
breaks.Breaks().addExec(callback=self._onExec)
def _checkLoaded(self):
try:
# check dosbox loaded/we are not plugin
dosbox.Dosbox().cs
except:
return None
prg = dosbox.loadedProgs()
for x in prg:
if not prg[x]:
continue
if prg[x].lower().endswith(self.fname):
return x
return None
def _prepare(self):
self.base = self.psp + 0x10
if self.symbols:
logger.debug("loading symbols from %s at %04X", self.symbols,
self.base)
self.ctx = context.Context()
self.ctx.loadSymbols(self.symbols, self.base)
try:
self.dseg = self.ctx.var("__SEG__DATA0")
except Exception:
self.dseg = None
self.dbox = dosbox.Dosbox()
self.loaded()
def loadedProgs():
psps = [0, 8]
ret = {}
d = dosbox.Dosbox()
mcb = d.firstMCB()
i = 0
while True:
m = struct.unpack('<BHH', d.mem(mcb << 4, 5))
if m[1] not in psps:
psps += [m[1]]
ret[m[1]] = readEnv(m[1], True)
if m[0] == 0x5A:
break
i += 1
mcb += m[2] + 1
return ret
def __init__(self):
dosbox.Dosbox().server = self
self.start(dosbox.Dosbox().host, dosbox.Dosbox().port)
def __init__(self):
dosbox.Dosbox().dasm = self
def __init__(self):
dosbox.Dosbox().ui = self
def readString(addr="ds:dx", end='\x00', maxsize=256):
data = dosbox.Dosbox().mem(addr, maxsize)
idx = data.find(end)
if idx >= 0:
data = data[:idx]
return data