?? os_cpu.h
字號:
/*
*********************************************************************************************************
* 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 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 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()
#define OS_EXIT_CRITICAL() ARMEnableInt()
/*
* Definitions specific to ARM/uHAL
*/
#define SVC32MODE 0x13
/* stack stuff */
#define OS_STK_GROWTH 1
/* angel takes up stack */
#define SEMIHOSTED_STACK_NEEDS 1024
/* idle task stack size (words) */
#ifdef SEMIHOSTED
#define OS_IDLE_STK_SIZE (32+SEMIHOSTED_STACK_NEEDS)
#else
#define OS_IDLE_STK_SIZE 32
#endif
/*
* Functions specific to uHAL
*/
/* defined in os_cpu_c.c */
extern void IrqStart(void);
extern void* IrqFinish(void);
extern void ARMTargetInit(void);
extern void ARMTargetStart(void);
/* defined in os_cpu_a.s */
extern void OS_TASK_SW(void);
extern void ARMDisableInt(void);
extern void ARMEnableInt(void);
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