www.pudn.com > ucos2.61.rar > OS_CPU.H

/* 
********************************************************************************************************* 
*                                               uC/OS-II 
*                                        The Real-Time Kernel 
* 
*                        (c) Copyright 1992-1998, Jean J. Labrosse, Plantation, FL 
*                                          All Rights Reserved 
*                        (c) Copyright ARM Limited 1999.  All rights reserved. 
* 
*                                          ARM Specific code 
* 
* File : OS_CPU.H 
* 
* Modification : 21/08/00  EL 
********************************************************************************************************* 
*/ 
 
//#include "periph\arm7tdmi\arm.h" 
 
#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 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 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 
 
/* 
********************************************************************************************************* 
*                              ARM, various architectures 
* 
********************************************************************************************************* 
*/ 
#define OS_ENTER_CRITICAL() ARMDisableInt()      //use this pair to globally disable interrupts 
#define OS_EXIT_CRITICAL()  ARMEnableInt()       //cation - ArmenableInt re-enables interrupts ready or not 
  
/* stack stuff */ 
#define OS_STK_GROWTH    1         //define the stack to grow from high to low 
 
 
/* idle task stack size (words) */ 
#ifdef SEMIHOSTED 
#define OS_IDLE_STK_SIZE        (64+SEMIHOSTED_STACK_NEEDS) 
#else 
#define OS_IDLE_STK_SIZE        64 
#endif 
 
 
/* defined in os_cpu_a.s */ 
extern void OS_TASK_SW(void);           // task switch routine 
extern void OSIntCtxSw(void);           // interrupt context switch 
extern void ARMDisableInt(void);        // disable global interrupts 
extern void ARMEnableInt(void);         // enable global interrupts 
extern void OSTickISR(void);		// timer interrupt routine