os_cpu.h

此为针对凌阳SPCE061A板进行的uCOS2.00版本的移植

/*******************************************************
					      Norman
						2008-08-03
********************************************************/


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


typedef unsigned char  BOOLEAN;
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;                     /* Single precision floating point                    */
typedef double         FP64;                     /* Double precision floating point                    */

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


#define  OS_CRITICAL_METHOD    2

#if      OS_CRITICAL_METHOD == 2
#define  OS_ENTER_CRITICAL()  __asm__("INT OFF \n\t")          /* Disable interrupts                        */
#define  OS_EXIT_CRITICAL()   __asm__("INT IRQ \n\t" "INT FIQ \n\t")        /* Enable  interrupts                        */
#endif


#define  OS_STK_GROWTH        1                       /* Stack grows from HIGH to LOW memory on 80x86  */

#define  OS_TASK_SW()         OSCtxSw()