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Absolute and relative jumps

master
Ben Kurtovic преди 10 години
родител
ревизия
ec51b1785c
променени са 2 файла, в които са добавени 35 реда и са изтрити 4 реда
  1. +9
    -0
      corpora/cmps_and_ifs.py
  2. +26
    -4
      func_smash.py

+ 9
- 0
corpora/cmps_and_ifs.py Целия файл

@@ -0,0 +1,9 @@
def f1(a):
return a < 8

def f2(a):
if a > 5:
return True
return False

corpus = [f1, f2]

+ 26
- 4
func_smash.py Целия файл

@@ -10,7 +10,7 @@ import types
OPMAP = opcode.opmap
OP_HASCALL = [OPMAP[n] for n in ("CALL_FUNCTION", "CALL_FUNCTION_VAR",
"CALL_FUNCTION_KW", "CALL_FUNCTION_VAR_KW")]
OP_MAKEFUNC = [OPMAP[n] for n in ("MAKE_FUNCTION", "MAKE_CLOSURE")]
OP_HASMAKE = [OPMAP[n] for n in ("MAKE_FUNCTION", "MAKE_CLOSURE")]

MARKOV_START = -1
MARKOV_END = -2
@@ -67,7 +67,18 @@ def print_function(func):
if code >= opcode.HAVE_ARGUMENT:
arg = _get_argument(codeobj, codestring, i, code)
i += 2
print " ({0!r})".format(arg)
if code in opcode.hascompare:
print " ({0})".format(arg)
elif code in opcode.hasjabs:
print " (to {0})".format(arg)
elif code in opcode.hasjrel:
print " (+{0})".format(arg)
elif code in OP_HASCALL:
print " ({0} args, {1} kwargs)".format(*arg)
elif code in OP_HASMAKE:
print " ({0} defaults)".format(arg)
else:
print " ({0!r})".format(arg)
else:
print

@@ -113,9 +124,13 @@ def _get_argument(codeobj, codestring, i, code):
return codeobj.co_varnames[arg]
elif code in opcode.hascompare:
return opcode.cmp_op[arg]
elif code in opcode.hasjabs:
return arg
elif code in opcode.hasjrel:
return arg - i - 2
elif code in OP_HASCALL:
return (ord(codestring[i]), ord(codestring[i + 1]))
elif code in OP_MAKEFUNC:
elif code in OP_HASMAKE:
return arg
raise NotImplementedError(code, opcode.opname[code])

@@ -129,12 +144,15 @@ def _make_codes(chain):
codes = []
instruction = random.choice(chain[MARKOV_START])
constants, names, varnames = [], [], []
i = 0
while 1:
i += 1
code, arg = instruction
if code == MARKOV_END:
break
codes.append(code)
if code >= opcode.HAVE_ARGUMENT:
i += 2
if code in opcode.hasconst:
if arg not in constants:
constants.append(arg)
@@ -149,10 +167,14 @@ def _make_codes(chain):
_coerce_arg_into_codes(codes, varnames.index(arg))
elif code in opcode.hascompare:
_coerce_arg_into_codes(codes, opcode.cmp_op.index(arg))
elif code in opcode.hasjabs:
_coerce_arg_into_codes(codes, arg)
elif code in opcode.hasjrel:
_coerce_arg_into_codes(codes, arg + i)
elif code in OP_HASCALL:
codes.append(arg[0])
codes.append(arg[1])
elif code in OP_MAKEFUNC:
elif code in OP_HASMAKE:
_coerce_arg_into_codes(codes, arg)
else:
raise NotImplementedError(code, opcode.opname[code])


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