FreeRTOS-Kernel/Source/portable/IAR/V850ES/portmacro.h

/*
	FreeRTOS.org V5.3.1 - Copyright (C) 2003-2009 Richard Barry.

	This file is part of the FreeRTOS.org distribution.

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	**NOTE** The exception to the GPL is included to allow you to distribute a
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	Temple Place, Suite 330, Boston, MA  02111-1307  USA.


	***************************************************************************
	*                                                                         *
	* Get the FreeRTOS eBook!  See http://www.FreeRTOS.org/Documentation      *
	*                                                                         *
	* This is a concise, step by step, 'hands on' guide that describes both   *
	* general multitasking concepts and FreeRTOS specifics. It presents and   *
	* explains numerous examples that are written using the FreeRTOS API.     *
	* Full source code for all the examples is provided in an accompanying    *
	* .zip file.                                                              *
	*                                                                         *
	***************************************************************************

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	Please ensure to read the configuration and relevant port sections of the
	online documentation.

	http://www.FreeRTOS.org - Documentation, latest information, license and
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*/

#ifndef PORTMACRO_H
#define PORTMACRO_H

#ifdef __cplusplus
extern "C" {
#endif

/*-----------------------------------------------------------
 * Port specific definitions.
 *
 * The settings in this file configure FreeRTOS correctly for the
 * given hardware and compiler.
 *
 * These settings should not be altered.
 *-----------------------------------------------------------
 */

/* Type definitions. */
#define portCHAR        char
#define portFLOAT       float
#define portDOUBLE      double
#define portLONG        long
#define portSHORT       short
#define portSTACK_TYPE  unsigned int
#define portBASE_TYPE   int


#if (configUSE_16_BIT_TICKS==1)
	typedef unsigned portSHORT portTickType;
	#define portMAX_DELAY ( portTickType ) 0xffff
#else
	typedef unsigned portLONG portTickType;
	#define portMAX_DELAY ( portTickType ) 0xffffffff
#endif
/*-----------------------------------------------------------*/	

/* Interrupt control macros. */
#define portDISABLE_INTERRUPTS() __asm ( "DI" )
#define portENABLE_INTERRUPTS()	 __asm ( "EI" )
/*-----------------------------------------------------------*/

/* Critical section control macros. */
#define portNO_CRITICAL_SECTION_NESTING		( ( unsigned portBASE_TYPE ) 0 )

#define portENTER_CRITICAL()														\
{																					\
extern volatile /*unsigned portSHORT*/ portSTACK_TYPE usCriticalNesting;			\
																					\
	portDISABLE_INTERRUPTS();														\
																					\
	/* Now interrupts are disabled ulCriticalNesting can be accessed */				\
	/* directly.  Increment ulCriticalNesting to keep a count of how many */		\
	/* times portENTER_CRITICAL() has been called. */								\
	usCriticalNesting++;															\
}

#define portEXIT_CRITICAL()															\
{																					\
extern volatile /*unsigned portSHORT*/ portSTACK_TYPE usCriticalNesting;			\
																					\
	if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING )						\
	{																				\
		/* Decrement the nesting count as we are leaving a critical section. */		\
		usCriticalNesting--;														\
																					\
		/* If the nesting level has reached zero then interrupts should be */		\
		/* re-enabled. */															\
		if( usCriticalNesting == portNO_CRITICAL_SECTION_NESTING )					\
		{																			\
			portENABLE_INTERRUPTS();												\
		}																			\
	}																				\
}
/*-----------------------------------------------------------*/

/* Task utilities. */
extern void vPortYield( void );
extern void vPortStart( void );
extern void portSAVE_CONTEXT( void );
extern void portRESTORE_CONTEXT( void );
#define portYIELD()	__asm ( "trap 0" )
#define portNOP()	__asm ( "NOP" )
extern void vTaskSwitchContext( void );
#define portYIELD_FROM_ISR( xHigherPriorityTaskWoken ) if( xHigherPriorityTaskWoken ) vTaskSwitchContext()

/*-----------------------------------------------------------*/

/* Hardwware specifics. */
#define portBYTE_ALIGNMENT	4
#define portSTACK_GROWTH	( -1 )
#define portTICK_RATE_MS	( ( portTickType ) 1000 / configTICK_RATE_HZ )		
/*-----------------------------------------------------------*/

/* Task function macros as described on the FreeRTOS.org WEB site. */
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )


#ifdef __cplusplus
}
#endif

#endif /* PORTMACRO_H */