/*
*********************************************************************************************************
*                                               uC/OS-II
*                                         The Real-Time Kernel
*
*                        (c) Copyright 1992-1998, Jean J. Labrosse, Plantation, FL
*                                          All Rights Reserved
*                        (c) Copyright ARM Limited 1999.  All rights reserved.
*
*                                          ARM Specific code
*
*
* File : OS_CPU_C.C
*********************************************************************************************************
*/

#define  OS_CPU_GLOBALS
#include    "os_cpu.h"
#include    "os_cfg.h"
#include    "source\ucos_ii.h"

/*
*********************************************************************************************************
*                                        INITIALIZE A TASK'S STACK
*
* Description: This function is called by either OSTaskCreate() or OSTaskCreateExt() to initialize the
*              stack frame of the task being created.  This function is highly processor specific.
*
* Arguments  : task          is a pointer to the task code
*
*              pdata         is a pointer to a user supplied data area that will be passed to the task
*                            when the task first executes.
*
*              ptos          is a pointer to the top of stack.  It is assumed that 'ptos' points to
*                            a 'free' entry on the task stack.  If OS_STK_GROWTH is set to 1 then 
*                            'ptos' will contain the HIGHEST valid address of the stack.  Similarly, if
*                            OS_STK_GROWTH is set to 0, the 'ptos' will contains the LOWEST valid address
*                            of the stack.
*
*              opt           specifies options that can be used to alter the behavior of OSTaskStkInit().
*                            (see uCOS_II.H for OS_TASK_OPT_???).
*
* Returns    : Always returns the location of the new top-of-stack' once the processor registers have
*              been placed on the stack in the proper order.
*
* Note(s)    : Interrupts are enabled when your task starts executing. You can change this by setting the
*              PSW to 0x0002 instead.  In this case, interrupts would be disabled upon task startup.  The
*              application code would be responsible for enabling interrupts at the beginning of the task
*              code.  You will need to modify OSTaskIdle() and OSTaskStat() so that they enable 
*              interrupts.  Failure to do this will make your system crash!
*********************************************************************************************************
*/

OS_STK * OSTaskStkInit (void (*task)(void *pd), void *pdata, OS_STK *ptos, INT16U opt)
{
    unsigned int *stk;

    opt    = opt;                           /* 'opt' is not used, prevent warning                      */
    stk    = (unsigned int *)ptos;          /* Load stack pointer                                      */

    /* build a context for the new task */
    *--stk = (unsigned int) task;       /* pc */
    *--stk = (unsigned int) task;       /* lr */

    *--stk = 0;                         /* r12 */
    *--stk = 0;                         /* r11 */
    *--stk = 0;                         /* r10 */
    *--stk = 0;                         /* r9 */
    *--stk = 0;                         /* r8 */
    *--stk = 0;                         /* r7 */
    *--stk = 0;                         /* r6 */
    *--stk = 0;                         /* r5 */
    *--stk = 0;                         /* r4 */
    *--stk = 0;                         /* r3 */
    *--stk = 0;                         /* r2 */
    *--stk = 0;                         /* r1 */
    *--stk = (unsigned int) pdata;      /* r0 */
    *--stk = (SVC32MODE|0x40);			/* cpsr  FIQ disable*/
 //   *--stk = (SVC32MODE|0x40);			/* spsr  FIQ disable */

#if 1
	Uart_Printf ( "OSTaskStkInit \n" );
#endif
    return ((OS_STK *)stk);
}

/*$PAGE*/
#if OS_CPU_HOOKS_EN
/*
*********************************************************************************************************
*                                          TASK CREATION HOOK
*
* Description: This function is called when a task is created.
*
* Arguments  : ptcb   is a pointer to the task control block of the task being created.
*
* Note(s)    : 1) Interrupts are disabled during this call.
*********************************************************************************************************
*/
void OSTaskCreateHook (OS_TCB *ptcb)
{
    ptcb = ptcb;  
#if 1
	Uart_Printf ( "OSTaskCreateHook \n" );
#endif                       /* Prevent compiler warning                                     */
}


/*
*********************************************************************************************************
*                                           TASK DELETION HOOK
*
* Description: This function is called when a task is deleted.
*
* Arguments  : ptcb   is a pointer to the task control block of the task being deleted.
*
* Note(s)    : 1) Interrupts are disabled during this call.
*********************************************************************************************************
*/
void OSTaskDelHook (OS_TCB *ptcb)
{
    ptcb = ptcb; 
#if 1
	Uart_Printf ( "OSTaskDelHook \n" );
#endif                      /* Prevent compiler warning                                     */
}

/*
*********************************************************************************************************
*                                           TASK SWITCH HOOK
*
* Description: This function is called when a task switch is performed.  This allows you to perform other
*              operations during a context switch.
*
* Arguments  : none
*
* Note(s)    : 1) Interrupts are disabled during this call.
*              2) It is assumed that the global pointer 'OSTCBHighRdy' points to the TCB of the task that
*                 will be 'switched in' (i.e. the highest priority task) and, 'OSTCBCur' points to the 
*                 task being switched out (i.e. the preempted task).
*********************************************************************************************************
*/
void OSTaskSwHook (void)
{
#if 1
	Uart_Printf ( "OSTaskSwHook \n" );
#endif
}

/*
*********************************************************************************************************
*                                           STATISTIC TASK HOOK
*
* Description: This function is called every second by uC/OS-II's statistics task.  This allows your 
*              application to add functionality to the statistics task.
*
* Arguments  : none
*********************************************************************************************************
*/
void OSTaskStatHook (void)
{
#if 1
	Uart_Printf ( "OSTaskStatHook \n" );
#endif
}

/*
*********************************************************************************************************
*                                               TICK HOOK
*
* Description: This function is called every tick.
*
* Arguments  : none
*
* Note(s)    : 1) Interrupts may or may not be ENABLED during this call.
*********************************************************************************************************
*/

void OSTimeTickHook (void)
{
#if 1
	Uart_Printf ( "OSTimeTickHook \n" );
#endif
//added by cyh 60919 begin
	//使用鉤子函數清除TimeTick中斷標志，匯編中斷服務程序沒有做這項工作	
	#define rI_ISPC		(*(volatile unsigned *)0x1e00024)
	#define BIT_TICK	(0x1<<20)
    rI_ISPC=BIT_TICK;	
//added by cyh 60919 end

}

#endif

void InitHookEnd (void)
{
#if 1
	Uart_Printf ( "InitHookEnd \n" );
#endif
}

void OSTCBInitHook (OS_TCB *ptcb)
{
#if 1
    ptcb = ptcb;                                           /* Prevent Compiler warning  */  
  
    {              /* Go through all TCBs in TCB list          */
  		Uart_Printf( "\n ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ \n " );
    	Uart_Printf( "ptcb->OSTCBPrio = %d   ", ptcb->OSTCBPrio );
		Uart_Printf("ptcb->OSTCBStkPtr = %p ",ptcb->OSTCBStkPtr);
		Uart_Printf( "ptcb->OSTCBDly = %d    ", ptcb->OSTCBDly );
        //ptcb = ptcb->OSTCBNext;                                /* Point at next TCB in TCB list        */
   		Uart_Printf( "\n ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ \n " );
    }
#endif          
}

void OSTaskIdleHook (void)
{

}

void OSInitHookBegin (void)
{
#if 1
	Uart_Printf ( "OSInitHookBegin \n" );
#endif
}

void OSInitHookEnd (void)
{
#if 1
	Uart_Printf ( "OSInitHookEnd \n" );
#endif
}

void OS_FlagInit(void)
{
#if 1
	Uart_Printf ( "OS_FlagInit \n" );
#endif

}

void          OS_FlagUnlink(OS_FLAG_NODE *pnode)
{
}

INT32U        OSIntCtxSwFlag = 0;           /* Used to flag a context switch */