nuclei-sdk/OS/UCOSII/arch/os_cpu_c.c

/*
*********************************************************************************************************
*                                              uC/OS-II
*                                        The Real-Time Kernel
*
*                    Copyright 1992-2020 Silicon Laboratories Inc. www.silabs.com
*
*                                 SPDX-License-Identifier: APACHE-2.0
*
*               This software is subject to an open source license and is distributed by
*                Silicon Laboratories Inc. pursuant to the terms of the Apache License,
*                    Version 2.0 available at www.apache.org/licenses/LICENSE-2.0.
*
*********************************************************************************************************
*/


/*
*********************************************************************************************************
*
*                                              RISC-V Port
*
* Filename  : os_cpu_c.c
* Version   : V2.93.00
*********************************************************************************************************
* For       : Nuclei RISC-V RV32 and RV64
* Toolchain : GNU C Compiler
*********************************************************************************************************
* Note(s)   : Hardware FP is not supported.
*********************************************************************************************************
*/

#define  OS_CPU_GLOBALS

/*
*********************************************************************************************************
*                                            INCLUDE FILES
*********************************************************************************************************
*/

#include  <ucos_ii.h>

/*
*********************************************************************************************************
*                                           LOCAL VARIABLES
*********************************************************************************************************
*/

#if OS_TMR_EN > 0u
static  INT16U  OSTmrCtr;
#endif


/*
*********************************************************************************************************
*                                       OS INITIALIZATION HOOK
*                                            (BEGINNING)
*
* Description: This function is called by OSInit() at the beginning of OSInit().
*
* Arguments  : none
*
* Note(s)    : 1) Interrupts should be disabled during this call.
*********************************************************************************************************
*/

#if OS_CPU_HOOKS_EN > 0u
void  OSInitHookBegin(void)
{
#if OS_TMR_EN > 0u
    OSTmrCtr = 0u;
#endif
}
#endif


/*
*********************************************************************************************************
*                                       OS INITIALIZATION HOOK
*                                               (END)
*
* Description: This function is called by OSInit() at the end of OSInit().
*
* Arguments  : none
*
* Note(s)    : 1) Interrupts should be disabled during this call.
*********************************************************************************************************
*/

#if OS_CPU_HOOKS_EN > 0u
void  OSInitHookEnd(void)
{

}
#endif


/*
*********************************************************************************************************
*                                          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.
*********************************************************************************************************
*/

#if OS_CPU_HOOKS_EN > 0u
void  OSTaskCreateHook(OS_TCB*  p_tcb)
{
#if OS_APP_HOOKS_EN > 0u
    App_TaskCreateHook(p_tcb);
#else
    (void)ptcb;                                /* Prevent compiler warning                             */
#endif
}
#endif


/*
*********************************************************************************************************
*                                           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.
*********************************************************************************************************
*/

#if OS_CPU_HOOKS_EN > 0u
void  OSTaskDelHook(OS_TCB*  p_tcb)
{
#if OS_APP_HOOKS_EN > 0u
    App_TaskDelHook(p_tcb);
#else
    (void)ptcb;                                /* Prevent compiler warning                             */
#endif
}
#endif


/*
*********************************************************************************************************
*                                             IDLE TASK HOOK
*
* Description: This function is called by the idle task.  This hook has been added to allow you to do
*              such things as STOP the CPU to conserve power.
*
* Arguments  : none
*
* Note(s)    : 1) Interrupts are enabled during this call.
*********************************************************************************************************
*/

#if OS_CPU_HOOKS_EN > 0u
void  OSTaskIdleHook(void)
{
#if OS_APP_HOOKS_EN > 0u
    App_TaskIdleHook();
#endif
}
#endif


/*
*********************************************************************************************************
*                                            TASK RETURN HOOK
*
* Description: This function is called if a task accidentally returns.  In other words, a task should
*              either be an infinite loop or delete itself when done.
*
* Arguments  : ptcb      is a pointer to the task control block of the task that is returning.
*
* Note(s)    : none
*********************************************************************************************************
*/

#if OS_CPU_HOOKS_EN > 0u
void  OSTaskReturnHook(OS_TCB*  p_tcb)
{
#if OS_APP_HOOKS_EN > 0u
    App_TaskReturnHook(p_tcb);
#else
    (void)ptcb;
#endif
}
#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
*********************************************************************************************************
*/

#if OS_CPU_HOOKS_EN > 0u
void  OSTaskStatHook(void)
{
#if OS_APP_HOOKS_EN > 0u
    App_TaskStatHook();
#endif
}
#endif


/*
*********************************************************************************************************
*                                        INITIALIZE A TASK'S STACK
* This OSTaskStkInit function is implemented in os_cpu_port.c portable source file
*
*********************************************************************************************************
*/


/*
*********************************************************************************************************
*                                           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).
*********************************************************************************************************
*/

#if (OS_CPU_HOOKS_EN > 0u) && (OS_TASK_SW_HOOK_EN > 0u)
void  OSTaskSwHook(void)
{
#if OS_APP_HOOKS_EN > 0u
    App_TaskSwHook();
#endif

    OS_TRACE_TASK_SWITCHED_IN(OSTCBHighRdy);
}
#endif


/*
*********************************************************************************************************
*                                           OS_TCBInit() HOOK
*
* Description: This function is called by OS_TCBInit() after setting up most of the TCB.
*
* Arguments  : ptcb    is a pointer to the TCB of the task being created.
*
* Note(s)    : 1) Interrupts may or may not be ENABLED during this call.
*********************************************************************************************************
*/

#if OS_CPU_HOOKS_EN > 0u
void  OSTCBInitHook(OS_TCB*  p_tcb)
{
#if OS_APP_HOOKS_EN > 0u
    App_TCBInitHook(p_tcb);
#else
    (void)ptcb;                                /* Prevent compiler warning                             */
#endif
}
#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.
*********************************************************************************************************
*/

#if (OS_CPU_HOOKS_EN > 0u) && (OS_TIME_TICK_HOOK_EN > 0u)
void  OSTimeTickHook(void)
{
#if OS_APP_HOOKS_EN > 0u
    App_TimeTickHook();
#endif

#if OS_TMR_EN > 0u
    OSTmrCtr++;
    if (OSTmrCtr >= (OS_TICKS_PER_SEC / OS_TMR_CFG_TICKS_PER_SEC)) {
        OSTmrCtr = 0u;
        OSTmrSignal();
    }
#endif
}
#endif


/*
*********************************************************************************************************
*                                          SYS TICK HANDLER
* This Systick handler function is implemented in os_cpu_port.c portable source file
* See xPortSysTickHandler in os_cpu_port.c
*
*********************************************************************************************************
*/