cpukit/include: Fix including in C++

Closes #4709

cpukit/include/link_elf.h

@@ -13,6 +13,10 @@
 #include <stdint.h>
 #include <rtems/rtl/rtl-obj-fwd.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 enum sections
 {
   rap_text = 0,
@@ -76,4 +80,8 @@ int _rtld_linkmap_add (rtems_rtl_obj* obj);
  * Remove link map from the list.
  */
 void _rtld_linkmap_delete (rtems_rtl_obj* obj);
+
+#ifdef __cplusplus
+}
+#endif
 #endif	/* _LINK_ELF_H_ */

cpukit/include/linux/rbtree.h

@@ -17,6 +17,10 @@
 
 #include <rtems/score/rbtree.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define rb_node RBTree_Node
 
 #define rb_left Node.rbe_left
@@ -138,4 +142,8 @@ static inline struct rb_node *rb_parent( struct rb_node *node )
     node = next \
   )
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif /* _LINUX_RBTREE_H */

cpukit/include/rtems/capture.h

@@ -838,7 +838,7 @@ rtems_capture_task_flags (rtems_tcb* tcb)
 static inline rtems_capture_control*
 rtems_capture_task_control (rtems_tcb* tcb)
 {
-  return tcb->Capture.control;
+  return (rtems_capture_control*) tcb->Capture.control;
 }
 
 /**
@@ -853,7 +853,7 @@ rtems_capture_task_control (rtems_tcb* tcb)
 static inline uint32_t
 rtems_capture_task_control_flags (rtems_tcb* tcb)
 {
-  rtems_capture_control*  control = tcb->Capture.control;
+  rtems_capture_control*  control = rtems_capture_task_control (tcb);
   if (!control)
     return 0;
   return control->flags;

cpukit/include/rtems/posix/muteximpl.h

@@ -104,7 +104,7 @@ RTEMS_INLINE_ROUTINE POSIX_Mutex_Protocol _POSIX_Mutex_Get_protocol(
   unsigned long flags
 )
 {
-  return flags & POSIX_MUTEX_PROTOCOL_MASK;
+  return (POSIX_Mutex_Protocol) (flags & POSIX_MUTEX_PROTOCOL_MASK);
 }
 
 RTEMS_INLINE_ROUTINE bool _POSIX_Mutex_Is_recursive(
@@ -484,4 +484,3 @@ bool _POSIX_Mutex_Auto_initialization( POSIX_Mutex_Control *the_mutex );
 
 #endif
 /*  end of include file */
-

cpukit/include/rtems/posix/pthreadattrimpl.h

@@ -72,7 +72,7 @@ RTEMS_INLINE_ROUTINE void _POSIX_Threads_Get_sched_param_sporadic(
 #if defined(RTEMS_POSIX_API)
   const POSIX_API_Control *api;
 
-  api = the_thread->API_Extensions[ THREAD_API_POSIX ];
+  api = (const POSIX_API_Control*) the_thread->API_Extensions[ THREAD_API_POSIX ];
   param->sched_ss_low_priority = _POSIX_Priority_From_core(
     scheduler,
     api->Sporadic.Low_priority.priority

cpukit/include/rtems/rtl/rtl-obj.h

@@ -333,7 +333,7 @@ static inline bool rtems_rtl_obj_text_inside (const rtems_rtl_obj* obj,
 {
   return
     (address >= obj->text_base) &&
-    (address < (obj->text_base + obj->text_size));
+    ((char*) address < ((char*) obj->text_base + obj->text_size));
 }
 
 /**
@@ -367,6 +367,18 @@ static inline bool rtems_rtl_obj_has_symbol (const rtems_rtl_obj*     obj,
           sym < (obj->global_table + obj->global_syms));
 }
 
+/**
+ * Is there space in the trampoline memory for a trapoline.
+ *
+ * @param obj The object file's descriptor to check for available space.
+ * @param size The size to be allocated.
+ * @retval bool Returns @true if the space is available.
+ */
+static inline size_t rtems_rtl_obj_tramp_avail_space (const rtems_rtl_obj* obj)
+{
+  return (char*) obj->tramp_brk - (char*) obj->trampoline;
+}
+
 /**
  * Is there space in the trampoline memory for a trapoline.
  *
@@ -378,7 +390,7 @@ static inline bool rtems_rtl_obj_has_tramp_space (const rtems_rtl_obj* obj,
                                                   const size_t         size)
 {
   return (obj->trampoline != NULL &&
-          ((obj->tramp_brk - obj->trampoline) + size) <= obj->tramps_size);
+          (rtems_rtl_obj_tramp_avail_space (obj) + size) <= obj->tramps_size);
 }
 
 /**
@@ -402,7 +414,7 @@ static inline size_t rtems_rtl_obj_trampoline_slots (const rtems_rtl_obj* obj)
 static inline size_t rtems_rtl_obj_trampolines (const rtems_rtl_obj* obj)
 {
   return obj->trampoline == NULL || obj->tramp_size == 0 ?
-    0 : (obj->tramp_brk - obj->trampoline) / obj->tramp_size;
+    0 : rtems_rtl_obj_tramp_avail_space (obj) / obj->tramp_size;
 }
 
 /**

cpukit/include/rtems/rtl/rtl.h

@@ -88,7 +88,7 @@ extern struct r_debug _rtld_debug;
  * Debugger break function. Call when debugging to have it read the _rtld_debug
  * variable.
  */
-extern void _rtld_debug_state (void);
+void _rtld_debug_state (void);
 
 /**
  * The type of constructor/destructor function.

cpukit/include/rtems/score/priority.h

@@ -24,12 +24,12 @@
 #include <rtems/score/cpu.h>
 #include <rtems/score/rbtree.h>
 
-struct _Scheduler_Control;
-
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+struct _Scheduler_Control;
+
 /**
  * @defgroup RTEMSScorePriority Priority Handler
  *

cpukit/include/rtems/score/priorityimpl.h

@@ -389,7 +389,7 @@ RTEMS_INLINE_ROUTINE bool _Priority_Less(
   const Priority_Control *the_left;
   const Priority_Node    *the_right;
 
-  the_left = left;
+  the_left = (const Priority_Control*) left;
   the_right = RTEMS_CONTAINER_OF( right, Priority_Node, Node.RBTree );
 
   return *the_left < the_right->priority;

cpukit/include/rtems/score/scheduleredfimpl.h

@@ -100,7 +100,7 @@ RTEMS_INLINE_ROUTINE bool _Scheduler_EDF_Less(
   Priority_Control          prio_left;
   Priority_Control          prio_right;
 
-  the_left = left;
+  the_left = (const Priority_Control*) left;
   the_right = RTEMS_CONTAINER_OF( right, Scheduler_EDF_Node, Node );
 
   prio_left = *the_left;
@@ -128,7 +128,7 @@ RTEMS_INLINE_ROUTINE bool _Scheduler_EDF_Priority_less_equal(
   Priority_Control          prio_left;
   Priority_Control          prio_right;
 
-  the_left = left;
+  the_left = (const Priority_Control*) left;
   the_right = RTEMS_CONTAINER_OF( right, Scheduler_EDF_Node, Node );
 
   prio_left = *the_left;

cpukit/include/rtems/score/tls.h

@@ -222,7 +222,7 @@ static inline void *_TLS_TCB_at_area_begin_initialize( void *tls_area )
 {
   void *tls_block = (char *) tls_area
     + _TLS_Get_thread_control_block_area_size( (uintptr_t) _TLS_Alignment );
-  TLS_Thread_control_block *tcb = tls_area;
+  TLS_Thread_control_block *tcb = (TLS_Thread_control_block*) tls_area;
   uintptr_t aligned_size = _TLS_Heap_align_up( (uintptr_t) _TLS_Size );
   TLS_Dynamic_thread_vector *dtv = (TLS_Dynamic_thread_vector *)
     ((char *) tls_block + aligned_size);

cpukit/include/rtems/score/watchdogimpl.h

@@ -150,7 +150,7 @@ RTEMS_INLINE_ROUTINE Watchdog_State _Watchdog_Get_state(
   const Watchdog_Control *the_watchdog
 )
 {
-  return RB_COLOR( &the_watchdog->Node.RBTree, Node );
+  return (Watchdog_State) RB_COLOR( &the_watchdog->Node.RBTree, Node );
 }
 
 /**