Added GC persistence to the ch_debug object (ex ch_root).

git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@4732 35acf78f-673a-0410-8e92-d51de3d6d3f4

os/kernel/include/chregistry.h

@@ -55,7 +55,7 @@ typedef struct {
   uint8_t   cf_off_preempt;         /**< @brief Offset of @p p_preempt
                                                 field.                      */
   uint8_t   cf_off_time;            /**< @brief Offset of @p p_time field.  */
-} chroot_t;
+} chdebug_t;
 
 /**
  * @name    Macro Functions
@@ -116,6 +116,7 @@ typedef struct {
 #ifdef __cplusplus
 extern "C" {
 #endif
+  extern volatile ROMCONST chdebug_t ch_debug;
   Thread *chRegFirstThread(void);
   Thread *chRegNextThread(Thread *tp);
 #ifdef __cplusplus

os/kernel/src/chregistry.c

@@ -56,9 +56,9 @@
 /*
  * OS signature in ROM plus debug-related information.
  */
-ROMCONST chroot_t ch_root = {
+volatile ROMCONST chdebug_t ch_debug = {
   "CHRT",
-  (uint8_t)sizeof (chroot_t),
+  (uint8_t)sizeof (chdebug_t),
   (uint8_t)0,
   (uint16_t)((CH_KERNEL_MAJOR << 11) |
              (CH_KERNEL_MINOR << 6) |

os/kernel/src/chsys.c

@@ -83,6 +83,9 @@ void chSysInit(void) {
   port_init();
   _scheduler_init();
   _vt_init();
+#if CH_USE_REGISTRY
+  (void)&ch_debug;
+#endif
 #if CH_USE_MEMCORE
   _core_init();
 #endif