def reduce_stack(self, stack, pre):
sl = len(stack)
stack = stack[:1] + stack[::-1][1:-1] + stack[-1:] + [pre]
if sl == 2: return Types.SingleInstr(stack)
elif sl == 3: return Types.DoubleInstr(stack)
elif sl == 4: return Types.TripleInstr(stack)
elif sl == 5: return Types.FourInstr(stack)
raise Exception('Parsing error')
def pic_locating(self, i):
if isinstance(i, Types.DoubleInstr):
return Types.DoubleInstr((i[0], self.v_exp(i[1]), i[2], i[3]))
elif isinstance(i, Types.TripleInstr):
return Types.TripleInstr(
(i[0], self.v_exp(i[1]), self.v_exp(i[2]), i[3], i[4]))
elif isinstance(i, Types.FourInstr):
return Types.FourInstr(
(i[0], i[1], self.v_exp(i[2]), i[3], i[4], i[5]))
return i
def vinst2(self, f, instr):
if isinstance(instr, Types.SingleInstr): return instr
elif isinstance(instr, Types.DoubleInstr):
return Types.DoubleInstr(
(instr[0], self.v_exp2(instr[1], instr, f,
False), instr[2], instr[3]))
elif isinstance(instr, Types.TripleInstr):
is_test = instr[0].upper() in ['TEST', 'TESTL', 'TESTW', 'TESTB']
return Types.TripleInstr(
(instr[0], self.v_exp2(instr[1], instr, f, is_test),
self.v_exp2(instr[2], instr, f, is_test), instr[3], instr[4]))
elif isinstance(instr, Types.FourInstr):
return Types.FourInstr(
(instr[0], instr[1], self.v_exp2(instr[2], instr, f, False),
instr[3], instr[4], instr[5]))
def reduce_stack(self, stack, pre):
"""
Compose instruction tuple
:param stack: list of parsed instruction components
:param pre: True if instruction has prefix operator
"""
sl = len(stack)
stack = stack[:1] + \
(stack[::-1][1:-1] if isinstance(self, parseX86) else stack[1:-1]) + \
stack[-1:] + [pre]
if sl == 2: return Types.SingleInstr(stack)
elif sl == 3: return Types.DoubleInstr(stack)
elif sl == 4: return Types.TripleInstr(stack)
elif sl == 5: return Types.FourInstr(stack)
elif sl == 6: return Types.FiveInstr(stack)
elif config.arch == config.ARCH_ARMT and sl == 8: return Types.CoproInstr(stack)
raise Exception('Parsing error, strange number of tokens: ' + str(sl))
