added a default vector table

Author: itzandroidtab

entry/cortex-vector.cpp

@@ -0,0 +1,24 @@
+// include the header with the global reset handler and the default handler
+#include "entry.hpp"
+
+// array with the initial vector table. Interrupt handlers should all point 
+// to the default handler as the irq class should be used to register the 
+// the handlers for interrupts. 
+void (*const volatile __vectors[])(void) __attribute__ ((section(".vectors"))) = {
+    (void (*)(void)) &__stack_end,
+    __reset_handler,    // The reset handler
+    __default_handler,  // The NMI handler
+    __default_handler,  // The hard fault handler
+    __default_handler,  // The MPU fault handler
+    __default_handler,  // The bus fault handler
+    __default_handler,  // The usage fault handler
+    0,                  // Reserved
+    0,                  // Reserved
+    0,                  // Reserved
+    0,                  // Reserved
+    __default_handler,  // SVCall handler
+    __default_handler,  // Debug monitor handler
+    0,                  // Reserved
+    __default_handler,  // The PendSV handler
+    __default_handler   // The SysTick handler
+};