os_cpu.h

我 Porting 的 uC/OS-II V2.84 (目前Micrium)最新版之 Keil C51 工程,专供给 8051 上做任务调度,我已将 Code Size 改小至 4000 Byte,对

/*
*********************************************************************************************************
*                                                uC/OS-II
*                                          The Real-Time Kernel
*
*                          (c) Copyright 1992-2006, Jean J. Labrosse, Weston, FL
*                                           All Rights Reserved
*
* File    : OS_CPU.H
* By      : Jean J. Labrosse
*********************************************************************************************************
*/

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;       


#define DATATYPE_1 idata             

#ifndef TRUE
    #define TRUE 1
#endif

#ifndef FALSE
    #define FALSE 0
#endif

/*
*********************************************************************************************************
*                                          FUNCTION PROTOTYPES
*
*            Origin in ucos_ii.h
* IMPORTANT: These prototypes MUST be placed in OS_CPU.H
#if 0
void          OSStartHighRdy        (void);
void          OSIntCtxSw            (void);
void          OSCtxSw               (void);
#endif
*********************************************************************************************************
*/

void          OSStartHighRdy        (void);
void          OSIntCtxSw            (void);
void          OSCtxSw               (void);

#define OS_CRITICAL_METHOD 1

#if	 OS_CRITICAL_METHOD == 1

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

#define  OS_STK_GROWTH    0						   
#define  OS_TASK_SW()     OSCtxSw()

void TargetInit(void) reentrant;