Fix bad conditional logic in mkconfig.c; Add user-mode pthread start-up logic

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5748 42af7a65-404d-4744-a932-0658087f49c3

include/nuttx/arch.h

@@ -390,10 +390,38 @@ void up_schedule_sigaction(FAR struct tcb_s *tcb, sig_deliver_t sigdeliver);
  *
  ****************************************************************************/
 
-#ifdef CONFIG_NUTTX_KERNEL
+#if defined(CONFIG_NUTTX_KERNEL) && defined(__KERNEL__)
 void up_task_start(main_t taskentry, int argc, FAR char *argv[]) noreturn_function;
 #endif
 
+/****************************************************************************
+ * Name: up_pthread_start
+ *
+ * Description:
+ *   In this kernel mode build, this function will be called to execute a
+ *   pthread in user-space.  When the pthread is first started, a kernel-mode
+ *   stub will first run to perform some housekeeping functions.  This
+ *   kernel-mode stub will then be called transfer control to the user-mode
+ *   pthread.
+ *
+ *   Normally the a user-mode start-up stub will also execute before the
+ *   pthread actually starts.  See libc/pthread/pthread_startup.c
+ *
+ * Input Parameters:
+ *   entrypt - The user-space address of the pthread entry point
+ *   arg     - Standard argument for the pthread entry point
+ *
+ * Returned Value:
+ *   This function should not return.  It should call the user-mode start-up
+ *   stub and that stub should call pthread_exit if/when the user pthread
+ *   terminates.
+ *
+ ****************************************************************************/
+
+#if defined(CONFIG_NUTTX_KERNEL) && defined(__KERNEL__) && !defined(CONFIG_DISABLE_PTHREAD)
+void up_pthread_start(pthread_startroutine_t entrypt, pthread_addr_t arg) noreturn_function;
+#endif
+
 /****************************************************************************
  * Name: up_allocate_heap
  *

include/nuttx/sched.h

@@ -702,6 +702,26 @@ void task_vforkabort(FAR struct task_tcb_s *child, int errcode);
 void task_startup(main_t entrypt, int argc, FAR char *argv[]);
 #endif
 
+/****************************************************************************
+ * Name: pthread_startup
+ *
+ * Description:
+ *   This function is the user-space, pthread startup function.  It is called
+ *   from up_pthread_start() in user-mode.
+ *
+ * Inputs:
+ *   entrypt - The user-space address of the pthread entry point
+ *   arg     - Standard argument for the pthread entry point
+ *
+ * Return:
+ *   None.  This function does not return.
+ *
+ ****************************************************************************/
+
+#if defined(CONFIG_NUTTX_KERNEL) && !defined(__KERNEL__) && !defined(CONFIG_DISABLE_PTHREAD)
+void pthread_startup(pthread_startroutine_t entrypt, pthread_addr_t arg);
+#endif
+
 #undef EXTERN
 #if defined(__cplusplus)
 }

include/nuttx/userspace.h

@@ -44,6 +44,7 @@
 
 #include <sys/types.h>
 #include <stdint.h>
+#include <pthread.h>
 
 #ifdef CONFIG_NUTTX_KERNEL
 
@@ -111,9 +112,12 @@ struct userspace_s
   uintptr_t us_bssstart;
   uintptr_t us_bssend;
 
-  /* Task/thread startup stubs */
+  /* Task/thread startup routines */
 
   void (*task_startup)(main_t entrypt, int argc, FAR char *argv[]) noreturn_function;
+#ifndef CONFIG_DISABLE_PTHREAD
+  void (*pthread_startup)(pthread_startroutine_t entrypt, pthread_addr_t arg);
+#endif
 
   /* Memory manager entry points */
 

include/pthread.h

@@ -167,7 +167,7 @@ typedef FAR void       *pthread_addr_t;
 typedef pthread_addr_t  any_t;
 
 typedef pthread_addr_t (*pthread_startroutine_t)(pthread_addr_t);
-typedef pthread_startroutine_t  pthread_func_t;
+typedef pthread_startroutine_t pthread_func_t;
 
 struct pthread_attr_s
 {