FreeRTOS/Source/portable/MPLAB/PIC32MZ/portmacro.h - third_party/github/FreeRTOS/FreeRTOS-Kernel - Git at Google

 /*
     FreeRTOS V8.2.2 - Copyright (C) 2015 Real Time Engineers Ltd.
     All rights reserved

     VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.

     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 modification to the GPL is included to allow you to     !<<
     >>!   distribute a combined work that includes FreeRTOS without being   !<<
     >>!   obliged to provide the source code for proprietary components     !<<
     >>!   outside of the FreeRTOS kernel.                                   !<<
     ***************************************************************************

     FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
     WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
     FOR A PARTICULAR PURPOSE.  Full license text is available on the following
     link: http://www.freertos.org/a00114.html

     ***************************************************************************
      *                                                                       *
      *    FreeRTOS provides completely free yet professionally developed,    *
      *    robust, strictly quality controlled, supported, and cross          *
      *    platform software that is more than just the market leader, it     *
      *    is the industry's de facto standard.                               *
      *                                                                       *
      *    Help yourself get started quickly while simultaneously helping     *
      *    to support the FreeRTOS project by purchasing a FreeRTOS           *
      *    tutorial book, reference manual, or both:                          *
      *    http://www.FreeRTOS.org/Documentation                              *
      *                                                                       *
     ***************************************************************************

     http://www.FreeRTOS.org/FAQHelp.html - Having a problem?  Start by reading
     the FAQ page "My application does not run, what could be wrong?".  Have you
     defined configASSERT()?

     http://www.FreeRTOS.org/support - In return for receiving this top quality
     embedded software for free we request you assist our global community by
     participating in the support forum.

     http://www.FreeRTOS.org/training - Investing in training allows your team to
     be as productive as possible as early as possible.  Now you can receive
     FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers
     Ltd, and the world's leading authority on the world's leading RTOS.

     http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
     including FreeRTOS+Trace - an indispensable productivity tool, a DOS
     compatible FAT file system, and our tiny thread aware UDP/IP stack.

     http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.
     Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.

     http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High
     Integrity Systems ltd. to sell under the OpenRTOS brand.  Low cost OpenRTOS
     licenses offer ticketed support, indemnification and commercial middleware.

     http://www.SafeRTOS.com - High Integrity Systems also provide a safety
     engineered and independently SIL3 certified version for use in safety and
     mission critical applications that require provable dependability.

     1 tab == 4 spaces!
 */

 #ifndef PORTMACRO_H
 #define PORTMACRO_H

 /* System include files */
 #include <xc.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	uint32_t
 #define portBASE_TYPE	long

 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

 	/* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
 	not need to be guarded with a critical section. */
 	#define portTICK_TYPE_IS_ATOMIC 1
 #endif
 /*-----------------------------------------------------------*/

 /* Hardware specifics. */
 #define portBYTE_ALIGNMENT			8
 #define portSTACK_GROWTH			-1
 #define portTICK_PERIOD_MS			( ( TickType_t ) 1000 / configTICK_RATE_HZ )
 /*-----------------------------------------------------------*/

 /* Critical section management. */
 #define portIPL_SHIFT				( 10UL )
 /* Don't straddle the CEE bit.  Interrupts calling FreeRTOS functions should
 never have higher IPL bits set anyway. */
 #define portALL_IPL_BITS			( 0x7FUL << portIPL_SHIFT )
 #define portSW0_BIT					( 0x01 << 8 )

 /* This clears the IPL bits, then sets them to
 configMAX_SYSCALL_INTERRUPT_PRIORITY.  An extra check is performed if
 configASSERT() is defined to ensure an assertion handler does not inadvertently
 attempt to lower the IPL when the call to assert was triggered because the IPL
 value was found to be above configMAX_SYSCALL_INTERRUPT_PRIORITY when an ISR
 safe FreeRTOS API function was executed.  ISR safe FreeRTOS API functions are
 those that end in FromISR.  FreeRTOS maintains a separate interrupt API to
 ensure API function and interrupt entry is as fast and as simple as possible. */
 #ifdef configASSERT
 	#define portDISABLE_INTERRUPTS()											\
 	{																			\
 	uint32_t ulStatus;															\
 																				\
 		/* Mask interrupts at and below the kernel interrupt priority. */		\
 		ulStatus = _CP0_GET_STATUS();											\
 																				\
 		/* Is the current IPL below configMAX_SYSCALL_INTERRUPT_PRIORITY? */	\
 		if( ( ( ulStatus & portALL_IPL_BITS ) >> portIPL_SHIFT ) < configMAX_SYSCALL_INTERRUPT_PRIORITY ) \
 		{																		\
 			ulStatus &= ~portALL_IPL_BITS;										\
 			_CP0_SET_STATUS( ( ulStatus | ( configMAX_SYSCALL_INTERRUPT_PRIORITY << portIPL_SHIFT ) ) ); \
 		}																		\
 	}
 #else /* configASSERT */
 	#define portDISABLE_INTERRUPTS()										\
 	{																		\
 	uint32_t ulStatus;														\
 																			\
 		/* Mask interrupts at and below the kernel interrupt priority. */	\
 		ulStatus = _CP0_GET_STATUS();										\
 		ulStatus &= ~portALL_IPL_BITS;										\
 		_CP0_SET_STATUS( ( ulStatus | ( configMAX_SYSCALL_INTERRUPT_PRIORITY << portIPL_SHIFT ) ) ); \
 	}
 #endif /* configASSERT */

 #define portENABLE_INTERRUPTS()											\
 {																		\
 uint32_t ulStatus;														\
 																		\
 	/* Unmask all interrupts. */										\
 	ulStatus = _CP0_GET_STATUS();										\
 	ulStatus &= ~portALL_IPL_BITS;										\
 	_CP0_SET_STATUS( ulStatus );										\
 }


 extern void vTaskEnterCritical( void );
 extern void vTaskExitCritical( void );
 #define portCRITICAL_NESTING_IN_TCB	1
 #define portENTER_CRITICAL()		vTaskEnterCritical()
 #define portEXIT_CRITICAL()			vTaskExitCritical()

 extern UBaseType_t uxPortSetInterruptMaskFromISR();
 extern void vPortClearInterruptMaskFromISR( UBaseType_t );
 #define portSET_INTERRUPT_MASK_FROM_ISR() uxPortSetInterruptMaskFromISR()
 #define portCLEAR_INTERRUPT_MASK_FROM_ISR( uxSavedStatusRegister ) vPortClearInterruptMaskFromISR( uxSavedStatusRegister )

 #if ( __mips_hard_float == 0 ) && ( configUSE_TASK_FPU_SUPPORT == 1 )
     #error configUSE_TASK_FPU_SUPPORT can only be set to 1 when the part supports a hardware FPU module.
 #endif

 #if ( __mips_hard_float == 1 ) && ( configUSE_TASK_FPU_SUPPORT == 1 )
     void vPortTaskUsesFPU( void );
 	#define portTASK_USES_FLOATING_POINT() vPortTaskUsesFPU()
 #endif

 #ifndef configUSE_PORT_OPTIMISED_TASK_SELECTION
 	#define configUSE_PORT_OPTIMISED_TASK_SELECTION 1
 #endif

 #if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1

 	/* Check the configuration. */
 	#if( configMAX_PRIORITIES > 32 )
 		#error configUSE_PORT_OPTIMISED_TASK_SELECTION can only be set to 1 when configMAX_PRIORITIES is less than or equal to 32.  It is very rare that a system requires more than 10 to 15 difference priorities as tasks that share a priority will time slice.
 	#endif

 	/* Store/clear the ready priorities in a bit map. */
 	#define portRECORD_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) |= ( 1UL << ( uxPriority ) )
 	#define portRESET_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) &= ~( 1UL << ( uxPriority ) )

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

 	#define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) uxTopPriority = ( 31 - _clz( ( uxReadyPriorities ) ) )

 #endif /* taskRECORD_READY_PRIORITY */

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

 /* Task utilities. */

 #define portYIELD()								\
 {												\
 uint32_t ulCause;								\
 												\
 	/* Trigger software interrupt. */			\
 	ulCause = _CP0_GET_CAUSE();					\
 	ulCause |= portSW0_BIT;						\
 	_CP0_SET_CAUSE( ulCause );					\
 }

 extern volatile UBaseType_t uxInterruptNesting;
 #define portASSERT_IF_IN_ISR() configASSERT( uxInterruptNesting == 0 )

 #define portNOP()	__asm volatile ( "nop" )

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

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

 #define portEND_SWITCHING_ISR( xSwitchRequired )	if( xSwitchRequired )	\
 													{						\
 														portYIELD();		\
 													}

 /* Required by the kernel aware debugger. */
 #ifdef __DEBUG
 	#define portREMOVE_STATIC_QUALIFIER
 #endif

 #ifdef __cplusplus
 }
 #endif

 #endif /* PORTMACRO_H */
	/*
	FreeRTOS V8.2.2 - Copyright (C) 2015 Real Time Engineers Ltd.
	All rights reserved

	VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.

	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 modification to the GPL is included to allow you to !<<
	>>! distribute a combined work that includes FreeRTOS without being !<<
	>>! obliged to provide the source code for proprietary components !<<
	>>! outside of the FreeRTOS kernel. !<<
	***************************************************************************

	FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
	WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
	FOR A PARTICULAR PURPOSE. Full license text is available on the following
	link: http://www.freertos.org/a00114.html

	***************************************************************************
	* *
	* FreeRTOS provides completely free yet professionally developed, *
	* robust, strictly quality controlled, supported, and cross *
	* platform software that is more than just the market leader, it *
	* is the industry's de facto standard. *
	* *
	* Help yourself get started quickly while simultaneously helping *
	* to support the FreeRTOS project by purchasing a FreeRTOS *
	* tutorial book, reference manual, or both: *
	* http://www.FreeRTOS.org/Documentation *
	* *
	***************************************************************************

	http://www.FreeRTOS.org/FAQHelp.html - Having a problem? Start by reading
	the FAQ page "My application does not run, what could be wrong?". Have you
	defined configASSERT()?

	http://www.FreeRTOS.org/support - In return for receiving this top quality
	embedded software for free we request you assist our global community by
	participating in the support forum.

	http://www.FreeRTOS.org/training - Investing in training allows your team to
	be as productive as possible as early as possible. Now you can receive
	FreeRTOS training directly from Richard Barry, CEO of Real Time Engineers
	Ltd, and the world's leading authority on the world's leading RTOS.

	http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
	including FreeRTOS+Trace - an indispensable productivity tool, a DOS
	compatible FAT file system, and our tiny thread aware UDP/IP stack.

	http://www.FreeRTOS.org/labs - Where new FreeRTOS products go to incubate.
	Come and try FreeRTOS+TCP, our new open source TCP/IP stack for FreeRTOS.

	http://www.OpenRTOS.com - Real Time Engineers ltd. license FreeRTOS to High
	Integrity Systems ltd. to sell under the OpenRTOS brand. Low cost OpenRTOS
	licenses offer ticketed support, indemnification and commercial middleware.

	http://www.SafeRTOS.com - High Integrity Systems also provide a safety
	engineered and independently SIL3 certified version for use in safety and
	mission critical applications that require provable dependability.

	1 tab == 4 spaces!
	*/

	#ifndef PORTMACRO_H
	#define PORTMACRO_H

	/* System include files */
	#include <xc.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 uint32_t
	#define portBASE_TYPE long

	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

	/* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
	not need to be guarded with a critical section. */
	#define portTICK_TYPE_IS_ATOMIC 1
	#endif
	/-----------------------------------------------------------/

	/* Hardware specifics. */
	#define portBYTE_ALIGNMENT 8
	#define portSTACK_GROWTH -1
	#define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
	/-----------------------------------------------------------/

	/* Critical section management. */
	#define portIPL_SHIFT ( 10UL )
	/* Don't straddle the CEE bit. Interrupts calling FreeRTOS functions should
	never have higher IPL bits set anyway. */
	#define portALL_IPL_BITS ( 0x7FUL << portIPL_SHIFT )
	#define portSW0_BIT ( 0x01 << 8 )

	/* This clears the IPL bits, then sets them to
	configMAX_SYSCALL_INTERRUPT_PRIORITY. An extra check is performed if
	configASSERT() is defined to ensure an assertion handler does not inadvertently
	attempt to lower the IPL when the call to assert was triggered because the IPL
	value was found to be above configMAX_SYSCALL_INTERRUPT_PRIORITY when an ISR
	safe FreeRTOS API function was executed. ISR safe FreeRTOS API functions are
	those that end in FromISR. FreeRTOS maintains a separate interrupt API to
	ensure API function and interrupt entry is as fast and as simple as possible. */
	#ifdef configASSERT
	#define portDISABLE_INTERRUPTS() \
	{ \
	uint32_t ulStatus; \
	\
	/* Mask interrupts at and below the kernel interrupt priority. */ \
	ulStatus = _CP0_GET_STATUS(); \
	\
	/* Is the current IPL below configMAX_SYSCALL_INTERRUPT_PRIORITY? */ \
	if( ( ( ulStatus & portALL_IPL_BITS ) >> portIPL_SHIFT ) < configMAX_SYSCALL_INTERRUPT_PRIORITY ) \
	{ \
	ulStatus &= ~portALL_IPL_BITS; \
	_CP0_SET_STATUS( ( ulStatus \| ( configMAX_SYSCALL_INTERRUPT_PRIORITY << portIPL_SHIFT ) ) ); \
	} \
	}
	#else /* configASSERT */
	#define portDISABLE_INTERRUPTS() \
	{ \
	uint32_t ulStatus; \
	\
	/* Mask interrupts at and below the kernel interrupt priority. */ \
	ulStatus = _CP0_GET_STATUS(); \
	ulStatus &= ~portALL_IPL_BITS; \
	_CP0_SET_STATUS( ( ulStatus \| ( configMAX_SYSCALL_INTERRUPT_PRIORITY << portIPL_SHIFT ) ) ); \
	}
	#endif /* configASSERT */

	#define portENABLE_INTERRUPTS() \
	{ \
	uint32_t ulStatus; \
	\
	/* Unmask all interrupts. */ \
	ulStatus = _CP0_GET_STATUS(); \
	ulStatus &= ~portALL_IPL_BITS; \
	_CP0_SET_STATUS( ulStatus ); \
	}


	extern void vTaskEnterCritical( void );
	extern void vTaskExitCritical( void );
	#define portCRITICAL_NESTING_IN_TCB 1
	#define portENTER_CRITICAL() vTaskEnterCritical()
	#define portEXIT_CRITICAL() vTaskExitCritical()

	extern UBaseType_t uxPortSetInterruptMaskFromISR();
	extern void vPortClearInterruptMaskFromISR( UBaseType_t );
	#define portSET_INTERRUPT_MASK_FROM_ISR() uxPortSetInterruptMaskFromISR()
	#define portCLEAR_INTERRUPT_MASK_FROM_ISR( uxSavedStatusRegister ) vPortClearInterruptMaskFromISR( uxSavedStatusRegister )

	#if ( __mips_hard_float == 0 ) && ( configUSE_TASK_FPU_SUPPORT == 1 )
	#error configUSE_TASK_FPU_SUPPORT can only be set to 1 when the part supports a hardware FPU module.
	#endif

	#if ( __mips_hard_float == 1 ) && ( configUSE_TASK_FPU_SUPPORT == 1 )
	void vPortTaskUsesFPU( void );
	#define portTASK_USES_FLOATING_POINT() vPortTaskUsesFPU()
	#endif

	#ifndef configUSE_PORT_OPTIMISED_TASK_SELECTION
	#define configUSE_PORT_OPTIMISED_TASK_SELECTION 1
	#endif

	#if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1

	/* Check the configuration. */
	#if( configMAX_PRIORITIES > 32 )
	#error configUSE_PORT_OPTIMISED_TASK_SELECTION can only be set to 1 when configMAX_PRIORITIES is less than or equal to 32. It is very rare that a system requires more than 10 to 15 difference priorities as tasks that share a priority will time slice.
	#endif

	/* Store/clear the ready priorities in a bit map. */
	#define portRECORD_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) \|= ( 1UL << ( uxPriority ) )
	#define portRESET_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) &= ~( 1UL << ( uxPriority ) )

	/-----------------------------------------------------------/

	#define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) uxTopPriority = ( 31 - _clz( ( uxReadyPriorities ) ) )

	#endif /* taskRECORD_READY_PRIORITY */

	/-----------------------------------------------------------/

	/* Task utilities. */

	#define portYIELD() \
	{ \
	uint32_t ulCause; \
	\
	/* Trigger software interrupt. */ \
	ulCause = _CP0_GET_CAUSE(); \
	ulCause \|= portSW0_BIT; \
	_CP0_SET_CAUSE( ulCause ); \
	}

	extern volatile UBaseType_t uxInterruptNesting;
	#define portASSERT_IF_IN_ISR() configASSERT( uxInterruptNesting == 0 )

	#define portNOP() __asm volatile ( "nop" )

	/-----------------------------------------------------------/

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

	#define portEND_SWITCHING_ISR( xSwitchRequired ) if( xSwitchRequired ) \
	{ \
	portYIELD(); \
	}

	/* Required by the kernel aware debugger. */
	#ifdef __DEBUG
	#define portREMOVE_STATIC_QUALIFIER
	#endif

	#ifdef __cplusplus
	}
	#endif

	#endif /* PORTMACRO_H */