2008-06-16 Joel Sherrill <joel.sherrill@oarcorp.com>

	* rtems/include/rtems/rtems/config.h,
	rtems/include/rtems/rtems/tasks.h, rtems/src/taskgetnote.c,
	rtems/src/tasks.c, rtems/src/tasksetnote.c, sapi/include/confdefs.h:
	Add CONFIGURE_DISABLE_CLASSIC_API_NOTEPADS.

2 files changed, 23 insertions, 2 deletions

diff --git a/cpukit/rtems/include/rtems/rtems/config.h b/cpukit/rtems/include/rtems/rtems/config.h
index 5afc3063d4..4298e6a215 100644
--- a/cpukit/rtems/include/rtems/rtems/config.h
+++ b/cpukit/rtems/include/rtems/rtems/config.h
@@ -48,6 +48,12 @@ typedef struct {
   uint32_t                    maximum_tasks;
 
   /**
+   * This field indicates whether Classic API notepads are
+   * enabled or disabled.
+   */
+  boolean                     notepads_enabled;
+
+  /**
    * This field contains the maximum number of Classic API 
    * Timers which are configured for this application.
    */
@@ -110,6 +116,13 @@ typedef struct {
   rtems_initialization_tasks_table *User_initialization_tasks_table;
 } rtems_api_configuration_table;
 
+/**
+ *  This macro returns the value of the notepads enabled field
+ *  in the Classic API configuration table.
+ */
+#define rtems_configuration_get_notepads_enabled() \
+        rtems_configuration_get_rtems_api_configuration()->notepads_enabled
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/cpukit/rtems/include/rtems/rtems/tasks.h b/cpukit/rtems/include/rtems/rtems/tasks.h
index f09b0eb329..fe9f20ef45 100644
--- a/cpukit/rtems/include/rtems/rtems/tasks.h
+++ b/cpukit/rtems/include/rtems/rtems/tasks.h
@@ -201,16 +201,24 @@ typedef struct {
 /**
  *  This is the API specific information required by each thread for
  *  the RTEMS API to function correctly.
+ *
+ *  @note Notepads must be the last entry in the structure and memory
+ *        will be taken away from this structure when allocated if 
+ *        notespads are disabled by the application configuration.
  */
 typedef struct {
-  /** This field contains the notepads for this task. */
-  uint32_t                 Notepads[ RTEMS_NUMBER_NOTEPADS ];
   /** This field contains the pending events for this task. */
   rtems_event_set          pending_events;
   /** This field contains the event wait condition for this task. */
   rtems_event_set          event_condition;
   /** This field contains the Classic API Signal information for this task. */
   ASR_Information          Signal;
+  /**
+   *  This field contains the notepads for this task.
+   *
+   *  @note MUST BE LAST ENTRY.
+   */
+  uint32_t                 Notepads[ RTEMS_NUMBER_NOTEPADS ];
 }  RTEMS_API_Control;
 
 /**