function pointers in modules must have global scope

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1960 42af7a65-404d-4744-a932-0658087f49c3

examples/nxflat/tests/mutex/mutex.c

@@ -54,7 +54,12 @@ static unsigned long nerrors[2] = {0, 0};
  * Private Functions
  ****************************************************************************/
 
-static void thread_func(void *parameter)
+/* NOTE: it is necessary for functions that are referred to by function pointers
+ *  pointer to be declared with global scope (at least for ARM).  Otherwise,
+ * a relocation type that is not supported by NXFLAT is generated by GCC.
+ */
+
+void thread_func(void *parameter)
 {
   int my_id = (int)parameter;
   int my_ndx = my_id - 1;

examples/nxflat/tests/pthread/pthread.c

@@ -75,7 +75,12 @@ enum exit_values_e
  * Private Functions
  ****************************************************************************/
 
-static void *child_start_routine(void *arg)
+/* NOTE: it is necessary for functions that are referred to by function pointers
+ *  pointer to be declared with global scope (at least for ARM).  Otherwise,
+ * a relocation type that is not supported by NXFLAT is generated by GCC.
+ */
+
+void *child_start_routine(void *arg)
 {
   printf("CHILD: started with arg=%d\n", (int)arg);
 

examples/nxflat/tests/signal/signal.c

@@ -69,7 +69,12 @@ static int sigusr2_rcvd = 0;
  * Name: sigusr1_sighandler
  ****************************************************************************/
 
-static void sigusr1_sighandler(int signo)
+/* NOTE: it is necessary for functions that are referred to by function pointers
+ * pointer to be declared with global scope (at least for ARM).  Otherwise,
+ * a relocation type that is not supported by NXFLAT is generated by GCC.
+ */
+
+void sigusr1_sighandler(int signo)
 {
   printf("sigusr1_sighandler: Received SIGUSR1, signo=%d\n", signo);
   sigusr1_rcvd = 1;
@@ -79,8 +84,13 @@ static void sigusr1_sighandler(int signo)
  * Name: sigusr2_sigaction
  ***************************************************************************/
 
+/* NOTE: it is necessary for functions that are referred to by function pointers
+ *  pointer to be declared with global scope (at least for ARM).  Otherwise,
+ * a relocation type that is not supported by NXFLAT is generated by GCC.
+ */
+
 #ifdef __USE_POSIX199309
-static void sigusr2_sigaction(int signo, siginfo_t *siginfo, void *arg)
+void sigusr2_sigaction(int signo, siginfo_t *siginfo, void *arg)
 {
   printf("sigusr2_sigaction: Received SIGUSR2, signo=%d siginfo=%p arg=%p\n",
 	 signo, siginfo, arg);
@@ -107,7 +117,7 @@ static void sigusr2_sigaction(int signo, siginfo_t *siginfo, void *arg)
   sigusr2_rcvd = 1;
 }
 #else
-static void sigusr2_sigaction(int signo)
+void sigusr2_sigaction(int signo)
 {
   printf("sigusr2_sigaction: Received SIGUSR2, signo=%d\n", signo);
   sigusr2_rcvd = 1;

examples/nxflat/tests/task/task.c

@@ -58,7 +58,12 @@ static sem_t g_sem;
  * Privite Functions
  ****************************************************************************/
 
-int child_task(int argc, char **argv)
+/* NOTE: it is necessary for functions that are referred to by function pointers
+ *  pointer to be declared with global scope (at least for ARM).  Otherwise,
+ * a relocation type that is not supported by NXFLAT is generated by GCC.
+ */
+
+ int child_task(int argc, char **argv)
 {
   printf("Child: execv was successful!\n");
   printf("Child: argc=%d\n", argc);