--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/nucleus/mbd.c	Fri May 15 01:28:16 2020 +0000
@@ -0,0 +1,88 @@
+/*************************************************************************/
+/*                                                                       */
+/*               Copyright Mentor Graphics Corporation 2002              */
+/*                         All Rights Reserved.                          */
+/*                                                                       */
+/* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS  */
+/* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS   */
+/* SUBJECT TO LICENSE TERMS.                                             */
+/*                                                                       */
+/*************************************************************************/
+
+/*************************************************************************/
+/*                                                                       */
+/* FILE NAME                                               VERSION       */
+/*                                                                       */
+/*      mbd.c                                          Nucleus PLUS 1.14 */
+/*                                                                       */
+/* COMPONENT                                                             */
+/*                                                                       */
+/*      MB - Mailbox Management                                          */
+/*                                                                       */
+/* DESCRIPTION                                                           */
+/*                                                                       */
+/*      This file contains global data structures for use within the     */
+/*      mailbox management component.                                    */
+/*                                                                       */
+/* DATA STRUCTURES                                                       */
+/*                                                                       */
+/*      MBD_Created_Mailboxes_List          Pointer to the linked-list   */
+/*                                            of created mailboxes       */
+/*      MBD_Total_Mailboxes                 Total number of created      */
+/*                                            mailboxes                  */
+/*      MBD_List_Protect                    Mailbox list protection      */
+/*                                                                       */
+/* FUNCTIONS                                                             */
+/*                                                                       */
+/*      None                                                             */
+/*                                                                       */
+/* DEPENDENCIES                                                          */
+/*                                                                       */
+/*      mb_defs.h                           Mailbox Management constants */
+/*      tc_defs.h                           Thread Control constants     */
+/*                                                                       */
+/* HISTORY                                                               */
+/*                                                                       */
+/*         DATE                    REMARKS                               */
+/*                                                                       */
+/*      03-01-1993      Created initial version 1.0                      */
+/*      04-19-1993      Verified version 1.0                             */
+/*      03-01-1994      Modified file header, resulting                  */
+/*                      in version 1.1                                   */
+/*                                                                       */
+/*      03-18-1994      Verified version 1.1                             */
+/*      04-17-1996      updated to version 1.2                           */
+/*      03-24-1998      Released version 1.3                             */
+/*      03-26-1999      Released 1.11m (new release                      */
+/*                        numbering scheme)                              */
+/*      04-17-2002      Released version 1.13m                           */
+/*      11-07-2002      Released version 1.14                            */
+/*************************************************************************/
+#define         NU_SOURCE_FILE
+
+#include        "mb_defs.h"                 /* Mailbox constants         */
+
+
+/* MBD_Created_Mailboxes_List is the head pointer of the linked list of
+   created mailboxes.  If the list is NU_NULL, there are no mailboxes
+   created.  */
+
+CS_NODE        *MBD_Created_Mailboxes_List;
+
+
+/* MBD_Total_Mailboxes contains the number of currently created
+   mailboxes.  */
+
+UNSIGNED        MBD_Total_Mailboxes;
+
+
+/* MBD_List_Protect is a list protection structure used to block any other
+   thread from access to the created mailbox list.  */
+
+TC_PROTECT      MBD_List_Protect;
+
+
+
+
+
+