all: support || operator in syzlang if condition

ex. f3 field has logic or operator in if condition:

conditional_struct {
        mask    int32
        f1      field1  (if[value[mask] & FIELD_FLAG1])
        f2      int64   (if[value[mask] & FIELD_FLAG2])
        f3      int64   (if[value[mask] == FIELD_FLAG1 || value[mask] == FIELD_FLAG2])
} [packed]

1 files changed, 5 insertions, 0 deletions

diff --git a/prog/expr.go b/prog/expr.go
index e9446ab2c..87fb056a9 100644
--- a/prog/expr.go
+++ b/prog/expr.go
@@ -30,6 +30,11 @@ func (bo *BinaryExpression) Evaluate(finder ArgFinder) (uint64, bool) {
 		return 0, true
 	case OperatorBinaryAnd:
 		return left & right, true
+	case OperatorOr:
+		if left != 0 || right != 0 {
+			return 1, true
+		}
+		return 0, true
 	}
 	panic(fmt.Sprintf("unknown operator %q", bo.Operator))
 }