examples: add doc to existing examples

2 files changed, 13 insertions, 0 deletions

diff --git a/examples/add.rs b/examples/add.rs
index 8cd1984..ba887c4 100644
--- a/examples/add.rs
+++ b/examples/add.rs
@@ -1,3 +1,11 @@
+//! Add example.
+//!
+//! Jit compile a function at runtime (generate native host code) which calls a function defined in
+//! the example based on the SystemV abi to demonstrate the [`juicebox_asm`] crate.
+
+#[cfg(not(any(target_arch = "x86_64", target_os = "linux")))]
+compile_error!("Only supported on x86_64 with SystemV abi");
+
 use juicebox_asm::prelude::*;
 use juicebox_asm::Runtime;
 use Reg64::*;
diff --git a/examples/fib.rs b/examples/fib.rs
index 534dc13..e523b9d 100644
--- a/examples/fib.rs
+++ b/examples/fib.rs
@@ -1,3 +1,8 @@
+//! Fibonacci example.
+//!
+//! Jit compile a function at runtime (generate native host code) to compute the fibonacci sequence
+//! to demonstrate the [`juicebox_asm`] crate.
+
 use juicebox_asm::prelude::*;
 use juicebox_asm::Runtime;