/*
 * FreeRTOS Kernel V10.3.1
 * 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.
 *
 * http://www.FreeRTOS.org
 * http://aws.amazon.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    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
    #endif
/*-----------------------------------------------------------*/

/* Hardware specifics. */
    #define portSTACK_GROWTH      ( -1 )
    #define portTICK_PERIOD_MS    ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
    #define portBYTE_ALIGNMENT    8
    #define portYIELD()    asm volatile ( "SWI 0" )
    #define portNOP()      asm volatile ( "NOP" )
/*-----------------------------------------------------------*/

/* Critical section handling. */

/*
 * The interrupt management utilities can only be called from ARM mode.  When
 * THUMB_INTERWORK is defined the utilities are defined as functions in
 * portISR.c to ensure a switch to ARM mode.  When THUMB_INTERWORK is not
 * defined then the utilities are defined as macros here - as per other ports.
 */

    #ifdef THUMB_INTERWORK

        extern void vPortDisableInterruptsFromThumb( void ) __attribute__( ( naked ) );
        extern void vPortEnableInterruptsFromThumb( void ) __attribute__( ( naked ) );

        #define portDISABLE_INTERRUPTS()    vPortDisableInterruptsFromThumb()
        #define portENABLE_INTERRUPTS()     vPortEnableInterruptsFromThumb()

    #else

        #define portDISABLE_INTERRUPTS()                                     \
    asm volatile (                                                           \
        "STMDB	SP!, {R0}		\n\t"       /* Push R0.						*/\
        "MRS	R0, CPSR		\n\t"       /* Get CPSR.					*/\
        "ORR	R0, R0, #0xC0	\n\t"       /* Disable IRQ, FIQ.			*/\
        "MSR	CPSR, R0		\n\t"       /* Write back modified value.	*/\
        "LDMIA	SP!, {R0}			")      /* Pop R0.						*/

        #define portENABLE_INTERRUPTS()                                      \
    asm volatile (                                                           \
        "STMDB	SP!, {R0}		\n\t"       /* Push R0.						*/\
        "MRS	R0, CPSR		\n\t"       /* Get CPSR.					*/\
        "BIC	R0, R0, #0xC0	\n\t"       /* Enable IRQ, FIQ.				*/\
        "MSR	CPSR, R0		\n\t"       /* Write back modified value.	*/\
        "LDMIA	SP!, {R0}			")      /* Pop R0.						*/

    #endif /* THUMB_INTERWORK */

    extern void vPortEnterCritical( void );
    extern void vPortExitCritical( void );

    #define portENTER_CRITICAL()    vPortEnterCritical();
    #define portEXIT_CRITICAL()     vPortExitCritical();
/*-----------------------------------------------------------*/

/* Task utilities. */
    #define portEND_SWITCHING_ISR( xSwitchRequired ) \
    {                                                \
        extern void vTaskSwitchContext( void );      \
                                                     \
        if( xSwitchRequired )                        \
        {                                            \
            vTaskSwitchContext();                    \
        }                                            \
    }
/*-----------------------------------------------------------*/

/* 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 */