/*
*********************************************************************************************************
*                                               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
*********************************************************************************************************
*/

#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 32-bit wide                    */
typedef unsigned int    OS_CPU_SR;

#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 U8             INT8U
#define U16            INT16U
#define U32            INT32U
/* 
*********************************************************************************************************
*                              ARM, various architectures
*
*********************************************************************************************************
*/


 

#define  OS_CRITICAL_METHOD    2

#if      OS_CRITICAL_METHOD == 1
  #define	OS_ENTER_CRITICAL()	SARM_IRQ_DIS()	//disable int
  #define	OS_EXIT_CRITICAL()	SARM_IRQ_EN()	//enable int
#endif

#if      OS_CRITICAL_METHOD == 2
  #define	OS_ENTER_CRITICAL()	SARM_IRQ_DIS1()	//disable int
  #define	OS_EXIT_CRITICAL()	SARM_IRQ_EN1()	//enable int
#endif

#if      OS_CRITICAL_METHOD == 3
  #define OS_ENTER_CRITICAL() {cpu_sr=IrqDisable();}
  //#define OS_EXIT_CRITICAL()  {IrqEnable(cpu_sr);}
  #define OS_EXIT_CRITICAL()  {if(!cpu_sr) IrqEnable();}
#endif

/* stack stuff */
#define OS_STK_GROWTH    1


 
/* defined in OS_CPU_A.s */
extern void OS_TASK_SW(void);
extern void SARM_IRQ_EN(void);
extern void SARM_IRQ_DIS(void);
extern void SARM_IRQ_EN1(void);
extern void SARM_IRQ_DIS1(void);
extern unsigned int IrqDisable(void);
//extern void IrqEnable(unsigned int sr);
extern void IrqEnable(void);
extern void ARMDisableInt2(void);//disable int
extern void ARMEnableInt2(void);//enable int