os_cpu.h

移植在鱼板上运行的ucos

#ifndef __OS_CPU_H__
#define __OS_CPU_H__

/*
*********************************************************************************************************
*                                              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 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                    */
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_CRITICAL_METHOD    3

#if      OS_CRITICAL_METHOD == 3
#define  OS_ENTER_CRITICAL()  cpu_sr=INTMASK&0x00200000;INTMASK|=0x00200000;cpu_sr|=0x001FFFFF;  /* Disable interrupts*/
#define  OS_EXIT_CRITICAL()   INTMASK&=cpu_sr;    												/* Enable  interrupts*/
#endif

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

#define  OS_TASK_SW()       OSCtxSw();  

#endif