Delayed static object construction after hardware setup

Author: cmaglie

hardware/arduino/sam/system/CMSIS/Device/ATMEL/sam3xa/source/gcc/startup_sam3xa.c

@@ -44,7 +44,8 @@ extern uint32_t _estack;
 int main(void);
 /** \endcond */
 
-void __libc_init_array(void);
+// Arduino: we must setup hardware before doing this
+// void __libc_init_array(void);
 
 /* Default empty handler */
 void Dummy_Handler(void);
@@ -272,7 +273,9 @@ void Reset_Handler(void)
 	}
 
 	/* Initialize the C library */
-	__libc_init_array();
+
+	// Arduino: we must setup hardware before doing this
+	//__libc_init_array();
 
 	/* Branch to main function */
 	main();

hardware/arduino/sam/variants/arduino_due_x/libsam_sam3x8e_gcc_rel.a

@@ -288,7 +288,6 @@ startup_sam3xa.o:
 00000000 W USART3_Handler
 00000000 W UsageFault_Handler
 00000000 W WDT_Handler
-         U __libc_init_array
          U _erelocate
          U _estack
          U _etext

hardware/arduino/sam/variants/arduino_due_x/libsam_sam3x8e_gcc_rel.a.txt

@@ -338,7 +338,9 @@ void USART3_Handler( void )
 extern "C" {
 #endif
 
-extern void init( void )
+void __libc_init_array(void);
+
+void init( void )
 {
   SystemInit() ;
 
@@ -352,6 +354,9 @@ extern void init( void )
   // Disable watchdog, common to all SAM variants
   WDT_Disable( WDT ) ;
 
+  // Initialize C library
+  __libc_init_array();
+
   // Initialize Serial port UART, common to all SAM3 variants
   PIO_Configure(
     g_APinDescription[PINS_UART].pPort,