stmhal/main: Use _estack value to initialise stack extents.

dpgeorge · dpgeorge · commit 00e717662449 · 2017-01-31T18:43:46.000+11:00
diff --git a/stmhal/main.c b/stmhal/main.c
@@ -508,8 +508,8 @@ int main(void) {
     // Stack limit should be less than real stack size, so we have a chance
     // to recover from limit hit.  (Limit is measured in bytes.)
     // Note: stack control relies on main thread being initialised above
-    mp_stack_ctrl_init();
-    mp_stack_set_limit((char*)&_ram_end - (char*)&_heap_end - 1024);
+    mp_stack_set_top(&_estack);
+    mp_stack_set_limit((char*)&_estack - (char*)&_heap_end - 1024);
 
     // GC init
     gc_init(&_heap_start, &_heap_end);
