1 files changed, 14 insertions, 0 deletions
diff --git a/src/preamble.js b/src/preamble.js
index 218e0388..61188f52 100644
--- a/src/preamble.js
+++ b/src/preamble.js
@@ -729,6 +729,20 @@ function exitRuntime() {
   callRuntimeCallbacks(__ATEXIT__);
 }
 
+Module['addOnInit'] = function addOnInit(cb) {
+  __ATINIT__.unshift(cb);
+};
+
+Module['addOnPreMain'] = function addOnPreMain(cb) {
+  __ATMAIN__.unshift(cb);
+};
+
+Module['addOnExit'] = function addOnExit(cb) {
+  __ATEXIT__.unshift(cb);
+};
+
+// TODO add onprerun, onpostrun
+
 // Tools
 
 // This processes a JS string into a C-line array of numbers, 0-terminated.