/*
*********************************************************************************************************
*                                              uC/OS-II
*                                        The Real-Time Kernel
*
*                    Copyright 1992-2021 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.
*
*********************************************************************************************************
*/


/*
*********************************************************************************************************
*
*                                         H8/300  Specific code
*
* Filename : os_cpu.h
* Version  : V2.93.01
*********************************************************************************************************
*/

#ifndef OS_CPU_H
#define OS_CPU_H

#ifdef   OS_CPU_GLOBALS
#define  OS_CPU_EXT
#else
#define  OS_CPU_EXT  extern
#endif

#include <machine.h>
/*
*********************************************************************************************************
*                                              DATA TYPES
*********************************************************************************************************
*/

typedef unsigned   char   BOOLEAN;
typedef  unsigned  char   INT8U;                 /* Unsigned  8 bit quantity                           */
typedef  signed    char   INT8S;                 /* Signed    8 bit quantity                           */
typedef  unsigned  short  INT16U;                /* Unsigned 16 bit quantity                           */
typedef  signed    short  INT16S;                /* Signed   16 bit quantity                           */
typedef  unsigned  long   INT32U;                /* Unsigned 32 bit quantity                           */
typedef  signed    long   INT32S;                /* Signed   32 bit quantity                           */
typedef  float            FP32;                  /* Single precision floating point                    */
typedef  double           FP64;                  /* Double precision floating point                    */

typedef  unsigned  short  OS_STK;                /* Each stack entry is 16-bit wide                    */
typedef  unsigned  char   OS_CPU_SR;             /* CPU Status Register                                */

/*
*********************************************************************************************************
*                                              CONSTANTS
*********************************************************************************************************
*/

#ifndef  FALSE
#define  FALSE    0
#endif

#ifndef  TRUE
#define  TRUE     1
#endif

/*
*********************************************************************************************************
*                                            Hitachi H8S
*
* Method #1:  Disable/Enable interrupts using simple instructions.  After critical section, interrupts
*             will be enabled even if they were disabled before entering the critical section.
*
* Method #2:  Disable/Enable interrupts by preserving the state of interrupts.  In other words, if
*             interrupts were disabled before entering the critical section, they will be disabled when
*             leaving the critical section.
*
* Method #3:  Disable/Enable interrupts by preserving the state of interrupts.  Generally speaking you
*             would store the state of the interrupt disable flag in the local variable 'cpu_sr' and then
*             disable interrupts.  'cpu_sr' is allocated in all of uC/OS-II's functions that need to
*             disable interrupts.  You would restore the interrupt disable state by copying back 'cpu_sr'
*             into the CPU's status register.
*********************************************************************************************************
*/
#define  OS_CRITICAL_METHOD    3


#if OS_CRITICAL_METHOD == 1

#define OS_ENTER_CRITICAL()   set_imask_ccr(1)

#define OS_EXIT_CRITICAL()    set_imask_ccr(0)
#endif


#if OS_CRITICAL_METHOD == 2

#define OS_ENTER_CRITICAL()   cpu_sr = get_ccr(); or_ccr(0x80)

#define OS_EXIT_CRITICAL()    set_ccr(cpu_sr);
#endif


#if OS_CRITICAL_METHOD == 3

#define OS_ENTER_CRITICAL()   cpu_sr = get_ccr();   or_ccr(0x80)

#define OS_EXIT_CRITICAL()    set_ccr(cpu_sr);
#endif


#define  OS_TASK_SW()         OSCtxSw()

#define  OS_STK_GROWTH        1                  /* Define stack growth: 1 = Down, 0 = Up              */

/*
*********************************************************************************************************
*                                            GLOBAL VARIABLES
*********************************************************************************************************
*/

/*
*********************************************************************************************************
*                                            PROTOTYPES
*********************************************************************************************************
*/
void OSStartHighRdy( void );
void OSIntCtxSw( void );
void OSCtxSw( void );

#endif
