os_cpu.h

对研究uc_os操作系统的非常有帮助

/*
*********************************************************************************************************
*                                               uC/OS-II
*                                        The Real-Time Kernel
*
*                         (c) Copyright 1992-2002, Jean J. Labrosse, Weston, FL
*                                          All Rights Reserved
*
*********************************************************************************************************
*/

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

/*
*********************************************************************************************************
*                                              DATA TYPES
*                                         (Compiler Specific)
*********************************************************************************************************
*/
#ifndef datadef
#define datadef

typedef unsigned char  BOOLEAN;                  /*in u'nSP  is 16 bit              */
typedef unsigned char  INT8U;                    /* Unsigned  8 bit quantity        */
typedef signed   char  INT8S;                    /* Signed    8 bit quantity        */
typedef unsigned int   INT16U;                   /* Unsigned 16 bit quantity        */
typedef signed   int   INT16S;                   /* Signed   16 bit quantity        */
typedef unsigned long  INT32U;                   /* Unsigned 32 bit quantity        */
typedef signed   long  INT32S;                   /* Signed   32 bit quantity        */
typedef float          FP32;                     /* in u'nSP  is 32 bit             */
typedef double         FP64;                     /* Single precision floating point 
                                                    in u'nSP  is 32 bit             */

typedef unsigned int  OS_STK;                   /* Each stack entry is 16-bit wide  */

#endif
/* 
*********************************************************************************************************
                          
*********************************************************************************************************
*/
#define  OS_CRITICAL_METHOD    1


/*
*********************************************************************************************************
*                          ARM'S STACK
*********************************************************************************************************
*/

#define  OS_STK_GROWTH        1                       /* Stack grows from HIGH to LOW memory on SPCE061A  */

#define  OS_ISR_PROTO_EXT                             //使用自定义任务切换函数和中断函数
#define  OS_TASK_SW()         OSCtxSw()

/*
**********************************************************************************************************
声明一些自己定义的函数原型
**********************************************************************************************************
*/

void OS_ENTER_CRITICAL(void);
void OS_EXIT_CRITICAL(void);
void OSStartHighRdy(void);
void OSIntCtxSw(void);
void OSCtxSw(void);