os_cpu.h

The LN2410SBC is a high performance single board computer based on ARM920T (MMU included). Its ultra

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//                                                                             ;
//   uC/OS-II ARM porting source                                               ;
//   version 2.52                                                              ;
//                                                                             ;
//   CyberLab 2003.11.25                                                       ;
//   www.armkorea.com                                                          ;
//    	by redizi                                                             ;
//                                                                             ;
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#ifdef  OS_CPU_GLOBALS
#define OS_CPU_EXT
#else
#define OS_CPU_EXT  extern
#endif

/*
*********************************************************************************************************
*                                              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 int   INT32U;                   /* Unsigned 32 bit quantity                           */
typedef signed   int   INT32S;                   /* Signed   32 bit quantity                           */
typedef float          FP32;                     /* Single precision floating point                    */
typedef double         FP64;                     /* Double precision floating point                    */

typedef unsigned int   OS_STK;                   /* Each stack entry is 16-bit wide                    */
typedef unsigned int   OS_CPU_SR;                /* Define size of CPU status register (PSW = 16 bits) */

#define BYTE           INT8S                     /* Define data types for backward compatibility ...   */
#define UBYTE          INT8U                     /* ... to uC/OS V1.xx.  Not actually needed for ...   */
#define WORD           INT16S                    /* ... uC/OS-II.                                      */
#define UWORD          INT16U
#define LONG           INT32S
#define ULONG          INT32U


//#define  OS_TASK_USERMODE
#define  OS_CRITICAL_METHOD    3

#if      OS_CRITICAL_METHOD == 3
   #ifdef   OS_TASK_USERMODE
      #define  OS_ENTER_CRITICAL()  (cpu_sr = armOSSaveIRQ())     /* Disable interrupts                        */
      #define  OS_EXIT_CRITICAL()   (armOSRestoreIRQ(cpu_sr))     /* Enable  interrupts                        */
   #else
      #define  OS_ENTER_CRITICAL()  (cpu_sr = UCOS_DisableIRQ())  /* Disable interrupts                        */
      #define  OS_EXIT_CRITICAL()   (UCOS_RestoreIRQ(cpu_sr))     /* Enable  interrupts                        */
   #endif
#endif




#define  OS_TASK_SW()						armOSCtxSw()

#define  OS_STK_GROWTH						1

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

void UCOS_VectSet(int num, int addr);
void UCOS_SWI(void);
void UCOS_IRQ(void);
int  UCOS_DisableIRQ(void);
void UCOS_RestoreIRQ(int);


void armOSCtxSw(void);

#ifdef OS_TASK_USERMODE
   int  armOSSaveIRQ(void);
   void armOSRestoreIRQ(int);
#endif