os_cpu.h

原创！！！ 刚刚完成的ucos2 2.76 for 瑞萨m16/60

/*
*********************************************************************************************************
*                                               uC/OS-II
*                                        The Real-Time Kernel
*
*                         (c) Copyright 1992-2002, Jean J. Labrosse, Weston, FL
*                                          All Rights Reserved
*
*********************************************************************************************************
*
* Port to Mitsubishi M16C/60 Series
*
* (c) Florian Stassen
* started 2003-01-18
*
*********************************************************************************************************
*/
#if !defined(AFX_MAINFRM_H__B89AC9B0_AB49_4D1C_B0B5_EF8EBCA112C3__INCLUDED_)
#define AFX_MAINFRM_H__B89AC9B0_AB49_4D1C_B0B5_EF8EBCA112C3__INCLUDED_
 
#ifdef  OS_CPU_GLOBALS
#define OS_CPU_EXT
#else
#define OS_CPU_EXT  extern
#endif

/*$PAGE*/
/*
*********************************************************************************************************
*                                              DATA TYPES
*                                         (Compiler Specific)
*********************************************************************************************************
*/

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 short OS_CPU_SR;                /* The CPU Status Word is 16-bit wide                 */

/*
*********************************************************************************************************
*                           Mitsubishi M16C/60 series
*
* 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    2

#define  OS_ENTER_CRITICAL()  \
                    asm ("PUSHC FLG");  /* store Flags incl I  */   \
                    asm ("FCLR I")      /* clear I */
#define  OS_EXIT_CRITICAL()   \
                    asm ("POPC FLG")            /* restore Flags incl I */

/*
*********************************************************************************************************
*                           Mitsubishi M16C/60 series Miscellaneous
*********************************************************************************************************
*/

#define  OS_STK_GROWTH        1                       /* Stack grows from HIGH to LOW memory */

#define  OS_TASK_SW()         asm("  INT #32")        // Task Switch via SW-Interrupt 32

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


/*
*********************************************************************************************************
*                                          FUNCTION PROTOTYPES
*********************************************************************************************************
*/

#endif // !defined(AFX_MAINFRM_H__B89AC9B0_AB49_4D1C_B0B5_EF8EBCA112C3__INCLUDED_)

// *********************************************************************************************************
// EOF