1 files changed, 8 insertions, 6 deletions
diff --git a/coroutine.h b/coroutine.h
index 273680d..fbaf000 100644
--- a/coroutine.h
+++ b/coroutine.h
@@ -13,6 +13,8 @@
 /* typedefs *******************************************************************/
 
 typedef size_t cid_t; /* 0=none; otherwise 1-indexed */
+
+#define COROUTINE __attribute__ ((noreturn, no_split_stack)) void
 typedef void (*cr_fn_t)(void *args);
 
 /* managing coroutines ********************************************************/
@@ -23,12 +25,12 @@ void coroutine_main(void);
 
 /* inside of coroutines *******************************************************/
 
-bool cr_begin(void);
-void cr_exit(void);
-void cr_yield(void);
-void cr_pause_and_yield(void);
-void cr_unpause(cid_t);
-#define cr_end()
+__attribute__ ((no_split_stack))           bool cr_begin( void);
+__attribute__ ((no_split_stack, noreturn)) void cr_exit(void);
+__attribute__ ((no_split_stack))           void cr_yield(void);
+__attribute__ ((no_split_stack))           void cr_pause_and_yield(void);
+__attribute__ ((no_split_stack))           void cr_unpause(cid_t);
+#define cr_end cr_exit
 
 cid_t cr_getcid(void);