diff options
Diffstat (limited to 'miasm2/expression/simplifications.py')
| -rw-r--r-- | miasm2/expression/simplifications.py | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/miasm2/expression/simplifications.py b/miasm2/expression/simplifications.py index 29d19614..756df880 100644 --- a/miasm2/expression/simplifications.py +++ b/miasm2/expression/simplifications.py @@ -23,6 +23,8 @@ def simp_cst_propagation(e_s, e): op = e.op # simpl integer manip # int OP int => int + + # TODO: <<< >>> << >> may be architecture dependant!! if op in op_propag_cst: while (len(args) >= 2 and isinstance(args[-1], ExprInt) and @@ -48,7 +50,11 @@ def simp_cst_propagation(e_s, e): x2 = mod_size2int[i2.arg.size](i2.arg) o = mod_size2uint[i1.arg.size](x1 >> x2) elif op == '>>>': - o = i1.arg >> i2.arg | i1.arg << (i1.size - i2.arg) + rounds = i2.arg % i1.size + o = i1.arg >> rounds | i1.arg << (i1.size - rounds) + elif op == '<<<': + rounds = i2.arg % i1.size + o = i1.arg << rounds | i1.arg >> (i1.size - rounds) elif op == '/': o = i1.arg / i2.arg elif op == '%': |