diff --git a/src/hook.rs b/src/hook.rs
new file mode 100644
index 0000000..b836588
--- /dev/null
+++ b/src/hook.rs
@@ -0,0 +1,24 @@
+pub trait Hook<F>: Copy {
+    fn as_ptr_u8(self) -> *mut u8;
+    fn trampoline(f: F) -> Closure<F>;
+}
+
+pub struct HookGuard {
+    bytes: [u8; 16],
+}
+
+impl HookGuard {
+    pub fn unhook(&self) {}
+}
+
+
+pub struct Closure<F> {
+    inner: Box<ClosureInner<F>>
+}
+
+#[repr(C)]
+struct ClosureInner<F> {
+    ptr: *const (),
+    data: F,
+}
+
diff --git a/src/lib.rs b/src/lib.rs
index ea0b9d0..9d8c870 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -2,6 +2,8 @@ mod base;
 mod program;
 mod section;
 
-pub use base::*;
-pub use program::*;
-pub use section::*;
+pub mod hook;
+
+pub use base::Base;
+pub use program::Program;
+pub use section::Section;