os_cpu.h

在keil大模式下编译的ucos-2源码

/*******************************************************************************
                                      uS/OS-II v2.8
文 件 名  : os_cpu.h
作    者  : czn
版    本  : v1.0
*******************************************************************************/
#ifdef  OS_CPU_GLOBALS
#define OS_CPU_EXT
#else
#define OS_CPU_EXT  extern
#endif

/*****************************************************
                        data type
                (is relation to compiler)
*****************************************************/
typedef unsigned char   BOOLEAN;
typedef unsigned char   INT8U;
typedef signed   char   INT8S;
typedef unsigned int    INT16U;
typedef signed   int    INT16S;
typedef unsigned long   INT32U;
typedef signed   long   INT32S;
typedef float           FP32;
typedef double          FP64;

typedef unsigned char    OS_STK;        /* 堆栈入口宽度为8位            */
typedef unsigned char    OS_CPU_SR;     /* 定义CPU状态寄存器的宽度为8位 */


/*****************************************************
                 the code is relation to CPU
*****************************************************/
#define OS_CRITICAL_METHOD   3

#if     OS_CRITICAL_METHOD == 1
#define OS_ENTER_CRITICAL()  EA = 0
#define OS_EXIT_CRITICAL()   EA = 1
#endif

#if     OS_CRITICAL_METHOD == 2
#define OS_ENTER_CRITICAL()  EA = 0
#define OS_EXIT_CRITICAL()   EA = 1
#endif

#if     OS_CRITICAL_METHOD == 3
#define OS_ENTER_CRITICAL()  EA = 0
#define OS_EXIT_CRITICAL()   EA = 1
#endif

#define OS_STK_GROWTH        1        /* 定义堆栈的方向;1=向下递减,0=向上递增 */

#define OS_TASK_SW()					 OSCtxSw()