note about calling convention

Jorge Aparicio · Jorge Aparicio · commit d6be95a3bb47 · 2016-08-11T00:36:19.000-05:00
diff --git a/src/arm.rs b/src/arm.rs
@@ -1,5 +1,7 @@
 use core::intrinsics;
 
+// NOTE This function and the one below are implemented using assembly because they using a custom
+// calling convention which can't be implemented using a normal Rust function
 // TODO use `global_asm!`
 #[naked]
 #[no_mangle]
