diff options
Diffstat (limited to 'ia32/ConstpropOp.vp')
| -rw-r--r-- | ia32/ConstpropOp.vp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/ia32/ConstpropOp.vp b/ia32/ConstpropOp.vp index e6ba98a..fea0afd 100644 --- a/ia32/ConstpropOp.vp +++ b/ia32/ConstpropOp.vp @@ -31,6 +31,7 @@ Inductive approx : Type := no compile-time information is available. *) | I: int -> approx (** A known integer value. *) | F: float -> approx (** A known floating-point value. *) + | L: int64 -> approx (** A know 64-bit integer value. *) | G: ident -> int -> approx (** The value is the address of the given global symbol plus the given integer offset. *) @@ -130,6 +131,11 @@ Nondetfunction eval_static_operation (op: operation) (vl: list approx) := | Oshru, I n1 :: I n2 :: nil => if Int.ltu n2 Int.iwordsize then I(Int.shru n1 n2) else Unknown | Oshruimm n, I n1 :: nil => if Int.ltu n Int.iwordsize then I(Int.shru n1 n) else Unknown | Ororimm n, I n1 :: nil => if Int.ltu n Int.iwordsize then I(Int.ror n1 n) else Unknown + | Oshldimm n, I n1 :: I n2 :: nil => + let n' := Int.sub Int.iwordsize n in + if Int.ltu n Int.iwordsize && Int.ltu n' Int.iwordsize + then I(Int.or (Int.shl n1 n) (Int.shru n2 n')) + else Unknown | Olea mode, vl => eval_static_addressing mode vl | Onegf, F n1 :: nil => F(Float.neg n1) | Oabsf, F n1 :: nil => F(Float.abs n1) @@ -140,6 +146,9 @@ Nondetfunction eval_static_operation (op: operation) (vl: list approx) := | Osingleoffloat, F n1 :: nil => F(Float.singleoffloat n1) | Ointoffloat, F n1 :: nil => eval_static_intoffloat n1 | Ofloatofint, I n1 :: nil => if propagate_float_constants tt then F(Float.floatofint n1) else Unknown + | Omakelong, I n1 :: I n2 :: nil => L(Int64.ofwords n1 n2) + | Olowlong, L n :: nil => I(Int64.loword n) + | Ohighlong, L n :: nil => I(Int64.hiword n) | Ocmp c, vl => eval_static_condition_val c vl | _, _ => Unknown end. |