util operators

src/win32/pe_image.rs

@@ -2,7 +2,7 @@
 //           PE stuff
 // ==============================
 
-use core::ops::Range;
+use core::ops::{Add, Range, Sub};
 use crate::upcast::Upcast;
 
 #[repr(C)]
@@ -286,3 +286,18 @@ impl<'a> Iterator for ExportIter<'a> {
         }
     }
 }
+
+
+impl Add<usize> for &ImageBase {
+    type Output = usize;
+    fn add(self, rhs: usize) -> Self::Output {
+        (self as *const _ as usize) + rhs
+    }
+}
+
+impl Sub<usize> for &ImageBase {
+    type Output = usize;
+    fn sub(self, rhs: usize) -> Self::Output {
+        (self as *const _ as usize) + rhs
+    }
+}