system.h

一个小型的嵌入式操作系统内核,可用于多种硬件平台

/**************************************************************************************************
                                      EDL RTOS Kernel
                              (c) Copyright 2005, Wu Jun
                                    All Rights Reserved    
                For further information, please visit http://www.enjoydigitallife.com

* Description:      None
* History:          
    Date                         Remarks
    2005-01-06                   Created initial version
    2005-12-12                   Finished the version 2.01
**************************************************************************************************/

#ifndef     SYSTEM_H
#define     SYSTEM_H

#include "task.h"


#define     ARM_USR_MODE    0x00000010L
#define     ARM_SYS_MODE    0x0000001FL
#define     ARM_SVC_MODE    0x00000013L

#define     NO_INT                  0xC0


/**************************************************************************************************
* function definition
**************************************************************************************************/
void sys_init( void );
U32 sys_enableInterrupt( void );
U32 sys_disableInterrupt( void );
void sys_restoreCpuFlags( U32 flags );
void sys_unlockKernel( void );
void sys_lockKernel( void );
void sys_schedule( void );
void sys_enterInterrupt( void );
void sys_leaveInterrupt( void );
void sys_initContext( TCB *tcb, void (*tskProc)(void *),void *pdata, void (*exit)( void ), U32 mode_flags  );


#endif