/*
 * FreeRTOS Kernel <DEVELOPMENT BRANCH>
 * Copyright (C) 2021 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
 *
 * SPDX-License-Identifier: MIT
 *
 * 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

/* *INDENT-OFF* */
#ifdef __cplusplus
    extern "C" {
#endif
/* *INDENT-ON* */

/*-----------------------------------------------------------
 * 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 ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS )
    typedef uint16_t     TickType_t;
    #define portMAX_DELAY              ( TickType_t ) 0xffff
#elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS )
    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
#else
    #error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width.
#endif
/*-----------------------------------------------------------*/

/* Interrupt control macros. */
void microblaze_disable_interrupts( void );
void microblaze_enable_interrupts( void );
#define portDISABLE_INTERRUPTS()    microblaze_disable_interrupts()
#define portENABLE_INTERRUPTS()     microblaze_enable_interrupts()
/*-----------------------------------------------------------*/

/* Critical section macros. */
void vPortEnterCritical( void );
void vPortExitCritical( void );
#define portENTER_CRITICAL()                  \
    {                                         \
        extern UBaseType_t uxCriticalNesting; \
        microblaze_disable_interrupts();      \
        uxCriticalNesting++;                  \
    }

#define portEXIT_CRITICAL()                      \
    {                                            \
        extern UBaseType_t uxCriticalNesting;    \
        /* Interrupts are disabled, so we can */ \
        /* access the variable directly. */      \
        uxCriticalNesting--;                     \
        if( uxCriticalNesting == 0 )             \
        {                                        \
            /* The nesting has unwound and we \
             * can enable interrupts again. */ \
            portENABLE_INTERRUPTS();           \
        }                                      \
    }

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

/* Task utilities. */
void vPortYield( void );
#define portYIELD()             vPortYield()

void vTaskSwitchContext();
#define portYIELD_FROM_ISR()    vTaskSwitchContext()
/*-----------------------------------------------------------*/

/* Hardware specifics. */
#define portBYTE_ALIGNMENT    4
#define portSTACK_GROWTH      ( -1 )
#define portTICK_PERIOD_MS    ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
#define portNOP()               asm volatile ( "NOP" )
#define portMEMORY_BARRIER()    asm volatile ( "" ::: "memory" )
/*-----------------------------------------------------------*/

/* 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 )

/* *INDENT-OFF* */
#ifdef __cplusplus
    }
#endif
/* *INDENT-ON* */

#endif /* PORTMACRO_H */