Execute global constructors in correct order

unaiur · unaiur · commit d6fecbcf8bbe · 2016-05-31T08:53:10.000+02:00
LX106 compiler generates the constructor list in reverse order, as you can read at: https://github.com/jcmvbkbc/gcc-xtensa/blob/de95b6b65d806a648434e73a6db85f1e74d62ec8/gcc/varasm.c#L1391
diff --git a/cores/esp8266/core_esp8266_main.cpp b/cores/esp8266/core_esp8266_main.cpp
@@ -119,9 +119,9 @@ static void loop_task(os_event_t *events) {
 }
 
 static void do_global_ctors(void) {
-    void (**p)(void);
-    for(p = &__init_array_start; p != &__init_array_end; ++p)
-        (*p)();
+    void (**p)(void) = &__init_array_end;
+    while (p != &__init_array_start)
+        (*--p)();
 }
 
 extern "C" void __gdb_init() {}

Original file line number	Diff line number	Diff line change
`@@ -119,9 +119,9 @@ static void loop_task(os_event_t *events) {`
`119`	`119`	`}`
`120`	`120`
`121`	`121`	`static void do_global_ctors(void) {`
`122`		`- void (**p)(void);`
`123`		`- for(p = &__init_array_start; p != &__init_array_end; ++p)`
`124`		`- (*p)();`
	`122`	`+ void (**p)(void) = &__init_array_end;`
	`123`	`+ while (p != &__init_array_start)`
	`124`	`+ (*--p)();`
`125`	`125`	`}`
`126`	`126`
`127`	`127`	`extern "C" void __gdb_init() {}`