feat: added support for constructors/desctructors

yak-kernel/src/platform/generic/crt/crti.c

@@ -0,0 +1,21 @@
+//
+// Created by rick on 9-5-23.
+//
+// Based upon https://wiki.osdev.org/Calling_Global_Constructors
+typedef void (*func_ptr)(void);
+
+extern func_ptr _init_array_start[0], _init_array_end[0];
+extern func_ptr _fini_array_start[0], _fini_array_end[0];
+
+void _init(void) {
+    for (func_ptr *func = _init_array_start; func != _init_array_end; func++)
+        (*func)();
+}
+
+void _fini(void) {
+    for (func_ptr *func = _fini_array_start; func != _fini_array_end; func++)
+        (*func)();
+}
+
+func_ptr _init_array_start[0] __attribute__ ((used, section(".init_array"), aligned(sizeof(func_ptr)))) = {};
+func_ptr _fini_array_start[0] __attribute__ ((used, section(".fini_array"), aligned(sizeof(func_ptr)))) = {};