--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/nucleus/tc_extr.h	Fri Oct 16 06:23:26 2020 +0000
@@ -0,0 +1,250 @@
+/*************************************************************************/
+/*                                                                       */
+/*               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       */
+/*                                                                       */
+/*      tc_extr.h                                      Nucleus PLUS 1.14 */
+/*                                                                       */
+/* COMPONENT                                                             */
+/*                                                                       */
+/*      TC - Thread Control                                              */
+/*                                                                       */
+/* DESCRIPTION                                                           */
+/*                                                                       */
+/*      This file contains function prototypes of all functions          */
+/*      accessible to other components.                                  */
+/*                                                                       */
+/* DATA STRUCTURES                                                       */
+/*                                                                       */
+/*      None                                                             */
+/*                                                                       */
+/* FUNCTIONS                                                             */
+/*                                                                       */
+/*      None                                                             */
+/*                                                                       */
+/* DEPENDENCIES                                                          */
+/*                                                                       */
+/*      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      Added validation utility for                     */
+/*                      error checking functions for                     */
+/*                      resume service and resume                        */
+/*                      driver, resulting in                             */
+/*                      version 1.0a                                     */
+/*      03-01-1994      Verified version 1.0a                            */
+/*      03-01-1994      Moved include files outside of                   */
+/*                      the file #ifndef to allow the                    */
+/*                      use of actual data structures,                   */
+/*                      added system protect pseudo                      */
+/*                      function, added set suspend                      */
+/*                      protect pseudo function,                         */
+/*                      added optimization for targets                   */ 
+/*                      able to access pointers in a                     */
+/*                      single instruction, changed                      */
+/*                      function names due to changes                    */
+/*                      in file structure, resulting                     */
+/*                      in version 1.1                                   */
+/*                                                                       */
+/*      03-18-1994      Verified version 1.1                             */
+/*                                                                       */
+/*      01-24-1996      Corrected a type on line 200:                    */
+/*                      TCT_Control_Interrupts,                          */
+/*                      resulting in 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                            */
+/*************************************************************************/
+
+#include        "tc_defs.h"                 /* Include TC constants      */
+
+
+/* Check to see if the file has been included already.  */
+
+#ifndef TC_EXTR
+#define TC_EXTR
+
+
+/* Define external reference for the system protection.   */
+
+extern TC_PROTECT TCD_System_Protect;
+extern VOID    *TCD_Current_Thread;
+
+
+/* Initialization functions.  */
+
+VOID            TCI_Initialize(VOID);
+
+
+/* Core error checking functions.  */
+
+#ifndef NU_NO_ERROR_CHECKING
+BOOLEAN         TCC_Validate_Resume(OPTION resume_type, NU_TASK *task_ptr);
+#endif
+
+STATUS          TCCE_Activate_HISR(NU_HISR *hisr_ptr);
+STATUS          TCCE_Create_Task(NU_TASK *task_ptr, CHAR *name, 
+                        VOID (*task_entry)(UNSIGNED, VOID *), UNSIGNED argc,
+                        VOID *argv, VOID *stack_address, UNSIGNED stack_size,
+                        OPTION priority, UNSIGNED time_slice, 
+                        OPTION preempt, OPTION auto_start);
+STATUS          TCCE_Reset_Task(NU_TASK *task_ptr, UNSIGNED argc, VOID *argv);
+STATUS          TCCE_Create_HISR(NU_HISR *hisr_ptr, CHAR *name,
+                        VOID (*hisr_entry)(VOID), OPTION priority,
+                        VOID *stack_address, UNSIGNED stack_size);
+STATUS          TCCE_Terminate_Task(NU_TASK *task_ptr);
+STATUS          TCCE_Delete_Task(NU_TASK *task_ptr);
+STATUS          TCCE_Delete_HISR(NU_HISR *hisr_ptr);
+STATUS          TCCE_Resume_Service(NU_TASK *task_ptr);
+STATUS          TCCE_Suspend_Service(NU_TASK *task_ptr);
+VOID            TCCE_Relinquish(VOID);
+VOID            TCCE_Task_Sleep(UNSIGNED ticks);
+STATUS          TCCE_Validate_Resume(OPTION resume_type, NU_TASK *task_ptr);
+INT             TCCE_Suspend_Error(VOID);
+STATUS          TCFE_Task_Information(NU_TASK *task_ptr, CHAR *name,
+                    DATA_ELEMENT *status, UNSIGNED *scheduled_count,
+                    DATA_ELEMENT *priority, OPTION *preempt, UNSIGNED *time_slice,
+                    VOID **stack_base, UNSIGNED *stack_size, 
+                    UNSIGNED *minimum_stack);
+
+
+/* Supplemental error checking functions.  */
+
+OPTION          TCSE_Change_Priority(NU_TASK *task_ptr, OPTION new_priority);
+OPTION          TCSE_Change_Preemption(OPTION preempt);
+UNSIGNED        TCSE_Change_Time_Slice(NU_TASK *task_ptr, UNSIGNED time_slice);
+UNSIGNED        TCSE_Control_Signals(UNSIGNED signal_enable_mask);
+UNSIGNED        TCSE_Receive_Signals(VOID);
+STATUS          TCSE_Register_Signal_Handler(VOID (*signal_handler)(UNSIGNED));
+STATUS          TCSE_Send_Signals(NU_TASK *task_ptr, UNSIGNED signals);
+
+
+/* Core processing functions.  */
+
+STATUS          TCT_Activate_HISR(NU_HISR *hisr_ptr);
+STATUS          TCC_Create_Task(NU_TASK *task_ptr, CHAR *name, 
+                        VOID (*task_entry)(UNSIGNED, VOID *), UNSIGNED argc,
+                        VOID *argv, VOID *stack_address, UNSIGNED stack_size,
+                        OPTION priority, UNSIGNED time_slice, 
+                        OPTION preempt, OPTION auto_start);
+STATUS          TCC_Reset_Task(NU_TASK *task_ptr, UNSIGNED argc, VOID *argv);
+STATUS          TCC_Create_HISR(NU_HISR *hisr_ptr, CHAR *name,
+                        VOID (*hisr_entry)(VOID), OPTION priority,
+                        VOID *stack_address, UNSIGNED stack_size);
+STATUS          TCC_Terminate_Task(NU_TASK *task_ptr);
+STATUS          TCC_Delete_Task(NU_TASK *task_ptr);
+STATUS          TCC_Delete_HISR(NU_HISR *hisr_ptr);
+STATUS          TCC_Resume_Task(NU_TASK *task_ptr, OPTION suspend_type);
+STATUS          TCC_Resume_Service(NU_TASK *task_ptr);
+VOID            TCC_Suspend_Task(NU_TASK *task_ptr, OPTION suspend_type,
+                                VOID (*cleanup)(VOID *), 
+                                VOID *information, UNSIGNED timeout);
+STATUS          TCC_Suspend_Service(NU_TASK *task_ptr);
+VOID            TCC_Task_Timeout(NU_TASK *task_ptr);
+VOID            TCC_Task_Sleep(UNSIGNED ticks);
+VOID            TCC_Relinquish(VOID);
+VOID            TCC_Time_Slice(NU_TASK *task_ptr);
+NU_TASK        *TCC_Current_Task_Pointer(VOID);
+NU_HISR        *TCC_Current_HISR_Pointer(VOID);
+VOID            TCC_Dispatch_LISR(INT vector);
+STATUS          TCC_Register_LISR(INT vector, VOID (*new_lisr)(INT), 
+                                        VOID (**old_lisr)(INT));
+
+
+/* Supplemental functions.  */
+
+OPTION          TCS_Change_Priority(NU_TASK *task_ptr, OPTION new_priority);
+OPTION          TCS_Change_Preemption(OPTION preempt);
+UNSIGNED        TCS_Change_Time_Slice(NU_TASK *task_ptr, UNSIGNED time_slice);
+UNSIGNED        TCS_Control_Signals(UNSIGNED signal_enable_mask);
+UNSIGNED        TCS_Receive_Signals(VOID);
+STATUS          TCS_Register_Signal_Handler(VOID (*signal_handler)(UNSIGNED));
+STATUS          TCS_Send_Signals(NU_TASK *task, UNSIGNED signals);
+
+
+/* Information retrieval functions.  */
+
+UNSIGNED        TCF_Established_Tasks(VOID);
+UNSIGNED        TCF_Established_HISRs(VOID);
+STATUS          TCF_Task_Information(NU_TASK *task, CHAR *name, 
+                        DATA_ELEMENT *status, UNSIGNED *scheduled_count,
+                        OPTION *priority, OPTION *preempt,
+                        UNSIGNED *time_slice, VOID **stack_base,
+                        UNSIGNED *stack_size, UNSIGNED *minimum_stack);
+STATUS          TCF_HISR_Information(NU_HISR *hisr, CHAR *name,
+                        UNSIGNED *scheduled_count, DATA_ELEMENT *priority,
+                        VOID **stack_base, UNSIGNED *stack_size,
+                        UNSIGNED *minimum_stack);
+UNSIGNED        TCF_Task_Pointers(NU_TASK **pointer_list, 
+                                                UNSIGNED maximum_pointers);
+UNSIGNED        TCF_HISR_Pointers(NU_HISR **pointer_list,
+                                                UNSIGNED maximum_pointers);
+                                        
+/* Target dependent functions.  */
+
+UNSIGNED        TCT_Check_Stack(VOID);
+VOID            TCT_Schedule(VOID);
+VOID            TCT_Restore_Interrupts(VOID);
+VOID            TCT_Protect(TC_PROTECT *protect);
+VOID            TCT_Unprotect(VOID);
+VOID            TCT_Unprotect_Specific(TC_PROTECT *protect);
+VOID            TCT_Set_Current_Protect(TC_PROTECT *protect);
+VOID            TCT_Control_To_System(VOID);
+INT             TCT_Control_Interrupts(INT new_level);
+INT             TCT_Local_Control_Interrupts(INT new_level);
+
+#ifdef NU_ENABLE_STACK_CHECK
+#define NU_CHECK_STACK() TCT_Check_Stack()
+#else /* no stack checking */
+#define NU_CHECK_STACK() ((void)0)
+#endif /* NU_ENABLE_STACK_CHECK */
+
+
+/* Determine if pointers are accessible with a single instruction.  If so,
+   just reference the pointer directly.  Otherwise, call the assembly 
+   service.  */
+
+#if             NU_POINTER_ACCESS == 1
+extern TC_TCB  *TCD_Execute_Task;
+#define         TCT_Current_Thread()        TCD_Current_Thread
+#define         TCT_Set_Execute_Task(task)  TCD_Execute_Task =  task
+#else
+VOID           *TCT_Current_Thread(VOID);
+VOID            TCT_Set_Execute_Task(TC_TCB *task);
+#endif
+
+/* Define pseudo function used by internal components of the system.  */
+
+#define         TCT_System_Protect()        TCT_Protect(&TCD_System_Protect)
+#define         TCT_System_Unprotect()      \
+                                TCT_Unprotect_Specific(&TCD_System_Protect)
+#define         TCT_Set_Suspend_Protect(protect)  \
+                   ((TC_TCB *) TCD_Current_Thread) -> tc_suspend_protect = \
+                   (TC_PROTECT *) protect
+#define         TCT_Get_Current_Protect()   \
+                   ((TC_TCB *) TCD_Current_Thread) -> tc_current_protect
+#define         TCC_Task_Priority(task)     ((TC_TCB *) (task)) -> tc_priority
+#endif
+
+
+
+
+