Source/portable/Renesas/SH2A_FPU/portmacro.h

/*
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    This file is part of the FreeRTOS distribution.

    FreeRTOS is free software; you can redistribute it and/or modify it under
    the terms of the GNU General Public License (version 2) as published by the
    Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
    ***NOTE*** The exception to the GPL is included to allow you to distribute
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*/


#ifndef PORTMACRO_H
#define PORTMACRO_H

#include <machine.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 - these are a bit legacy and not really used now, other than
portSTACK_TYPE and portBASE_TYPE. */
#define portCHAR		char
#define portFLOAT		float
#define portDOUBLE		double
#define portLONG		long
#define portSHORT		short
#define portSTACK_TYPE	unsigned portLONG
#define portBASE_TYPE	long

#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
/*-----------------------------------------------------------*/

/* Hardware specifics. */
#define portBYTE_ALIGNMENT				8
#define portSTACK_GROWTH				-1
#define portTICK_RATE_MS				( ( portTickType ) 1000 / configTICK_RATE_HZ )		
#define portNOP()						nop()
#define portSTART_SCHEDULER_TRAP_NO		( 32 )
#define portYIELD_TRAP_NO				( 33 )
#define portKERNEL_INTERRUPT_PRIORITY	( 1 )

void vPortYield( void );
#define portYIELD()						vPortYield()

extern void vTaskSwitchContext( void );
#define portYIELD_FROM_ISR( x )			if( x != pdFALSE ) vTaskSwitchContext()

/* 
 * This function tells the kernel that the task referenced by xTask is going to 
 * use the floating point registers and therefore requires the floating point 
 * registers saved as part of its context. 
 */
portBASE_TYPE xPortUsesFloatingPoint( void* xTask );

/*
 * The flop save and restore functions are defined in portasm.src and called by
 * the trace "task switched in" and "trace task switched out" macros. 
 */
void vPortSaveFlopRegisters( void *pulBuffer );
void vPortRestoreFlopRegisters( void *pulBuffer );

/*
 * pxTaskTag is used to point to the buffer into which the floating point 
 * context should be saved.  If pxTaskTag is NULL then the task does not use
 * a floating point context.
 */
#define traceTASK_SWITCHED_OUT() if( pxCurrentTCB->pxTaskTag != NULL ) vPortSaveFlopRegisters( pxCurrentTCB->pxTaskTag )
#define traceTASK_SWITCHED_IN() if( pxCurrentTCB->pxTaskTag != NULL ) vPortRestoreFlopRegisters( pxCurrentTCB->pxTaskTag )

/*
 * These macros should be called directly, but through the taskENTER_CRITICAL()
 * and taskEXIT_CRITICAL() macros.
 */
#define portENABLE_INTERRUPTS() 	set_imask( 0x00 )
#define portDISABLE_INTERRUPTS() 	set_imask( portKERNEL_INTERRUPT_PRIORITY )

/* Critical nesting counts are stored in the TCB. */
#define portCRITICAL_NESTING_IN_TCB ( 1 )

/* The critical nesting functions defined within tasks.c. */
extern void vTaskEnterCritical( void );
extern void vTaskExitCritical( void );
#define portENTER_CRITICAL()	vTaskEnterCritical();
#define portEXIT_CRITICAL()		vTaskExitCritical();

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

/* 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 */