diff options
Diffstat (limited to 'cfrontend/Csharpminor.v')
| -rw-r--r-- | cfrontend/Csharpminor.v | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/cfrontend/Csharpminor.v b/cfrontend/Csharpminor.v index ce19f68..1aa536a 100644 --- a/cfrontend/Csharpminor.v +++ b/cfrontend/Csharpminor.v @@ -181,7 +181,18 @@ Definition eval_constant (cst: constant) : option val := end. Definition eval_unop := Cminor.eval_unop. -Definition eval_binop := Cminor.eval_binop. + +Definition eval_binop (op: binary_operation) + (arg1 arg2: val) (m: mem): option val := + match op, arg1, arg2 with + | Cminor.Ocmp c, Vptr b1 n1, Vptr b2 n2 => + if valid_pointer m b1 (Int.signed n1) + && valid_pointer m b2 (Int.signed n2) + then Cminor.eval_binop op arg1 arg2 + else None + | _, _, _ => + Cminor.eval_binop op arg1 arg2 + end. (** Allocation of local variables at function entry. Each variable is bound to the reference to a fresh block of the appropriate size. *) |