From fb84029beef9bec3c205583296b181023f2e4b6b Mon Sep 17 00:00:00 2001
From: Jorge Aparicio <jorge@japaric.io>
Date: Thu, 11 Jul 2019 12:53:58 +0200
Subject: [PATCH] implement the #[shared] attribute as specified in RFC #211

---
 macros/src/codegen/locals.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/macros/src/codegen/locals.rs b/macros/src/codegen/locals.rs
index 799ef7a0ad..cbfe05fbb9 100644
--- a/macros/src/codegen/locals.rs
+++ b/macros/src/codegen/locals.rs
@@ -42,7 +42,11 @@ pub fn codegen(
         let cfgs = &local.cfgs;
         has_cfgs |= !cfgs.is_empty();
 
-        let section = util::link_section("data", core);
+        let section = if local.shared && cfg!(feature = "heterogeneous") {
+            Some(quote!(#[rtfm::export::shared]))
+        } else {
+            util::link_section("data", core)
+        };
         let expr = &local.expr;
         let ty = &local.ty;
         fields.push(quote!(