1 files changed, 169 insertions, 0 deletions
diff --git a/cpukit/score/inline/rtems/score/userext.inl b/cpukit/score/inline/rtems/score/userext.inl
new file mode 100644
index 0000000000..2aef8001ff
--- /dev/null
+++ b/cpukit/score/inline/rtems/score/userext.inl
@@ -0,0 +1,169 @@
+/*  userext.inl
+ *
+ *  This file contains the macro implementation of the inlined routines
+ *  from the User Extension Handler
+ *
+ *  COPYRIGHT (c) 1989-1999.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.com/license/LICENSE.
+ *
+ *  $Id$
+ */
+
+#ifndef __USER_EXTENSIONS_inl
+#define __USER_EXTENSIONS_inl
+
+#include <rtems/score/wkspace.h>
+
+/*PAGE
+ *
+ *  _User_extensions_Add_set
+ *
+ *  DESCRIPTION:
+ *
+ *  This routine is used to add a user extension set to the active list.
+ *
+ *  NOTE: Must be before _User_extensions_Handler_initialization to
+ *        ensure proper inlining.
+ */
+
+RTEMS_INLINE_ROUTINE void _User_extensions_Add_set (
+  User_extensions_Control *the_extension,
+  User_extensions_Table   *extension_table
+)
+{
+  the_extension->Callouts = *extension_table;
+
+  _Chain_Append( &_User_extensions_List, &the_extension->Node );
+
+  /*
+   * If a switch handler is present, append it to the switch chain.
+   */
+
+  if ( extension_table->thread_switch != NULL ) {
+    the_extension->Switch.thread_switch = extension_table->thread_switch;
+    _Chain_Append( &_User_extensions_Switches_list, &the_extension->Switch.Node );
+  }
+}
+
+/*PAGE
+ *
+ *  _User_extensions_Handler_initialization
+ *
+ *  DESCRIPTION:
+ *
+ *  This routine performs the initialization necessary for this handler.
+ */
+
+RTEMS_INLINE_ROUTINE void _User_extensions_Handler_initialization (
+    uint32_t                number_of_extensions,
+    User_extensions_Table  *initial_extensions
+)
+{
+  User_extensions_Control *extension;
+  uint32_t                 i;
+
+  _Chain_Initialize_empty( &_User_extensions_List );
+  _Chain_Initialize_empty( &_User_extensions_Switches_list );
+
+  if ( initial_extensions ) {
+    extension = (User_extensions_Control *)
+      _Workspace_Allocate_or_fatal_error(
+        number_of_extensions * sizeof( User_extensions_Control )
+      );
+  
+    memset (
+      extension,
+      0,
+      number_of_extensions * sizeof( User_extensions_Control )
+    );
+  
+    for ( i = 0 ; i < number_of_extensions ; i++ ) {
+      _User_extensions_Add_set (extension, &initial_extensions[i]);
+      extension++;
+    }
+  }
+}
+
+/*PAGE
+ *
+ *  _User_extensions_Add_API_set
+ *
+ *  DESCRIPTION:
+ *
+ *  This routine is used to add an API extension set to the active list.
+ */
+ 
+RTEMS_INLINE_ROUTINE void _User_extensions_Add_API_set (
+  User_extensions_Control *the_extension
+)
+{
+  _Chain_Append( &_User_extensions_List, &the_extension->Node );
+
+  /*
+   *  If a switch handler is present, append it to the switch chain.
+   */
+
+  if ( the_extension->Callouts.thread_switch != NULL ) {
+    the_extension->Switch.thread_switch = the_extension->Callouts.thread_switch;
+    _Chain_Append( 
+      &_User_extensions_Switches_list, &the_extension->Switch.Node );
+  }
+}
+
+/*PAGE
+ *
+ *  _User_extensions_Remove_set
+ *
+ *  DESCRIPTION:
+ *
+ *  This routine is used to remove a user extension set from the active list.
+ */
+
+RTEMS_INLINE_ROUTINE void _User_extensions_Remove_set (
+  User_extensions_Control  *the_extension
+)
+{
+  _Chain_Extract( &the_extension->Node );
+  
+  /*
+   * If a switch handler is present, remove it.
+   */
+
+  if ( the_extension->Callouts.thread_switch != NULL )
+    _Chain_Extract( &the_extension->Switch.Node );
+}
+
+/*PAGE
+ *
+ *  _User_extensions_Thread_switch
+ *
+ *  DESCRIPTION:
+ *
+ *  This routine is used to invoke the user extension which
+ *  is invoked when a context switch occurs.
+ */
+
+RTEMS_INLINE_ROUTINE void _User_extensions_Thread_switch (
+  Thread_Control *executing,
+  Thread_Control *heir
+)
+{
+  Chain_Node                     *the_node;
+  User_extensions_Switch_control *the_extension_switch;
+  
+  for ( the_node = _User_extensions_Switches_list.first ;
+        !_Chain_Is_tail( &_User_extensions_Switches_list, the_node ) ;
+        the_node = the_node->next ) {
+
+    the_extension_switch = (User_extensions_Switch_control *) the_node;
+
+    (*the_extension_switch->thread_switch)( executing, heir );
+  }
+}
+
+#endif
+/* end of include file */