/*
 * FreeRTOS Kernel <DEVELOPMENT BRANCH>
 * Copyright (C) 2020 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 * https://www.FreeRTOS.org
 * https://github.com/FreeRTOS
 *
 */

#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

typedef portSTACK_TYPE StackType_t;
typedef long BaseType_t;
typedef unsigned long UBaseType_t;


#if (configUSE_16_BIT_TICKS==1)
	typedef uint16_t TickType_t;
	#define portMAX_DELAY ( TickType_t ) 0xffff
#else
	typedef uint32_t TickType_t;
	#define portMAX_DELAY ( TickType_t ) 0xffffffffUL
#endif
/*-----------------------------------------------------------*/

/* Interrupt control macros. */
#define portDISABLE_INTERRUPTS() __asm ( "DI" )
#define portENABLE_INTERRUPTS()	 __asm ( "EI" )
/*-----------------------------------------------------------*/

/* Critical section control macros. */
#define portNO_CRITICAL_SECTION_NESTING		( ( UBaseType_t ) 0 )

#define portENTER_CRITICAL()														\
{																					\
extern volatile /*uint16_t*/ 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 /*uint16_t*/ 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 ) do { if( xHigherPriorityTaskWoken ) vTaskSwitchContext(); } while( 0 )

/*-----------------------------------------------------------*/

/* Hardwware specifics. */
#define portBYTE_ALIGNMENT	4
#define portSTACK_GROWTH	( -1 )
#define portTICK_PERIOD_MS	( ( TickType_t ) 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 */