arch.h

一种操作系统源码核

#if !defined(_ARCH_H)
#define _ARCH_H
 /*
*********************************************************************************************************
*                                              DATA TYPES
*                                         (Compiler Specific)
*********************************************************************************************************
*/
#define CPU8     0
#define CPU16    1
#define CPU32    2

#define  DEVICE_TYPE   CPU16
#if DEVICE_TYPE==CPU8
typedef signed char      SIGNED;                /* Define data types for backward compatibility ...   */
typedef unsigned char    UNSIGNED;                    /* ... to uC/OS V1.xx.  Not actually needed for ...   */
#define SYS_MAX_VALUE       255
#define LOWEST_PRIORITY      63
#define TIME_SCALE   10
#endif
#if DEVICE_TYPE==CPU16
typedef signed short    SIGNED;                /* Define data types for backward compatibility ...   */
typedef unsigned short  UNSIGNED;
#define SYS_MAX_VALUE      65535
#define LOWEST_PRIORITY      127
#define TIME_SCALE   1
#endif
#if DEVICE_TYPE==CPU32
typedef signed long    SIGNED;                /* Define data types for backward compatibility ...   */
typedef unsigned long  UNSIGNED;
#define SYSMAXVALUE       16777215
#define LOWEST_PRIORITY      255
#define TIME_SCALE   1
#endif
typedef signed char    	STATUS;
typedef int            	INT;
typedef unsigned char  	BOOLEAN;
typedef unsigned char  	INT8U;                    /* Unsigned  8 bit quantity                           */
typedef signed char    	INT8;                    /* Signed    8 bit quantity  */
typedef unsigned short 	INT16U;                   /* Unsigned 16 bit quantity                           */
typedef signed   short 	INT16;                   /* Signed   16 bit quantity                           */
typedef unsigned long  	INT32U;                   /* Unsigned 32 bit quantity                           */
typedef signed   long  	INT32;                   /* Signed   32 bit quantity                           */
typedef float          	FP32;                     /* Single precision floating point                    */
typedef double         	FP64;                     /* Double precision floating point  */

typedef unsigned char  UCHAR;                    /* Unsigned  8 bit quantity                           */
typedef signed char    CHAR;                    /* Signed    8 bit quantity                           */
typedef unsigned short USHORT;                   /* Unsigned 16 bit quantity                           */
typedef signed   short SHORT;                   /* Signed   16 bit quantity                           */
typedef unsigned long  ULONG;                   /* Unsigned 32 bit quantity                           */
typedef signed   long  LONG;                   /* Signed   32 bit quantity   */



#ifndef  FALSE
#define  FALSE                     0
#endif
#ifndef  TRUE
#define  TRUE                      1
#endif
#define  OS_CRITICAL_METHOD    2

#if      OS_CRITICAL_METHOD == 1
#define  EnLock()  asm  CLI                /* Disable interrupts                            */
#define  UnLock()   asm  STI                /* Enable  interrupts                            */
#endif

#if      OS_CRITICAL_METHOD == 2
#define   EnLock() asm {PUSHF; CLI}        /* Disable interrupts                            */
#define   UnLock()   asm  POPF               /* Enable  interrupts                            */
#endif

/*
*********************************************************************************************************
*                           Intel 80x86 (Real-Mode, Large Model) Miscellaneous
*********************************************************************************************************
*/
#define  STK_DEFAULT         512
#define  SYS_MIN_STACK       42
#define  SYS_STK_GROWTH       0
#define  MESSAGE_SIZE         32
#define  MAX_INT_VECT            32

#define HISR_LOWEST_PRIO    2

#define  SYS_TIME_SLICE             20

                    /* Stack grows from HIGH to LOW memory on 80x86  */

#define  INTSWITCH                 0x80                    /* Interrupt vector # used for context switch    */

#define  Ctrl_Task_Save()         asm  INT   INTSWITCH
/*
*********************************************************************************************************
*                                              ERROR CODES
*********************************************************************************************************
*/
#define INTTICK 0x08
#define TICKS_PER_SEC 100





#endif