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/*
* FreeRTOS memory safety proofs with CBMC.
* Copyright (C) 2019 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://aws.amazon.com/freertos
* http://www.FreeRTOS.org
*/
#include "FreeRTOS.h"
#include "queue.h"
#include "queue_init.h"
#include "tasksStubs.h"
#include "cbmc.h"
#ifndef LOCK_BOUND
#define LOCK_BOUND 4
#endif
#ifndef QUEUE_SEND_BOUND
#define QUEUE_SEND_BOUND 4
#endif
#if ( configUSE_QUEUE_SETS == 0 )
BaseType_t prvCopyDataToQueue( Queue_t * const pxQueue,
const void * pvItemToQueue,
const BaseType_t xPosition )
{
if( pxQueue->uxItemSize > ( UBaseType_t ) 0 )
{
__CPROVER_assert( __CPROVER_r_ok( pvItemToQueue, ( size_t ) pxQueue->uxItemSize ), "pvItemToQueue region must be readable" );
if( xPosition == queueSEND_TO_BACK )
{
__CPROVER_assert( __CPROVER_w_ok( ( void * ) pxQueue->pcWriteTo, ( size_t ) pxQueue->uxItemSize ), "pxQueue->pcWriteTo region must be writable" );
}
else
{
__CPROVER_assert( __CPROVER_w_ok( ( void * ) pxQueue->u.xQueue.pcReadFrom, ( size_t ) pxQueue->uxItemSize ), "pxQueue->u.xQueue.pcReadFrom region must be writable" );
}
return pdFALSE;
}
else
{
return nondet_BaseType_t();
}
}
#else /* if ( configUSE_QUEUE_SETS == 0 ) */
BaseType_t prvNotifyQueueSetContainer( const Queue_t * const pxQueue )
{
Queue_t * pxQueueSetContainer = pxQueue->pxQueueSetContainer;
configASSERT( pxQueueSetContainer );
}
void prvUnlockQueue( Queue_t * const pxQueue )
{
configASSERT( pxQueue );
if( pxQueue->pxQueueSetContainer != NULL )
{
prvNotifyQueueSetContainer( pxQueue );
}
listLIST_IS_EMPTY( &( pxQueue->xTasksWaitingToReceive ) );
pxQueue->cTxLock = queueUNLOCKED;
listLIST_IS_EMPTY( &( pxQueue->xTasksWaitingToSend ) );
pxQueue->cRxLock = queueUNLOCKED;
}
#endif /* if ( configUSE_QUEUE_SETS == 0 ) */
void harness()
{
/*Initialise the tasksStubs */
vInitTaskCheckForTimeOut( 0, QUEUE_SEND_BOUND - 1 );
xState = nondet_basetype();
QueueHandle_t xQueue =
xUnconstrainedQueueBoundedItemSize( 2 );
TickType_t xTicksToWait;
if( xState == taskSCHEDULER_SUSPENDED )
{
xTicksToWait = 0;
}
if( xQueue )
{
void * pvItemToQueue = pvPortMalloc( xQueue->uxItemSize );
BaseType_t xCopyPosition;
if( xCopyPosition == queueOVERWRITE )
{
xQueue->uxLength = 1;
}
if( xQueue->uxItemSize == 0 )
{
/* uxQueue->xQueueType is a pointer to the head of the queue storage area.
* If an item has a sice, this pointer must not be modified after init.
* Otherwise some of the write statements will fail. */
xQueue->uxQueueType = nondet_int8_t();
pvItemToQueue = 0;
}
/* This code checks explicitly for violations of the pxQueue->uxMessagesWaiting < pxQueue->uxLength
* invariant. */
xQueue->uxMessagesWaiting = nondet_UBaseType_t();
/* These values are decremented during a while loop interacting with task.c.
* This interaction is currently abstracted away.*/
xQueue->cTxLock = LOCK_BOUND - 1;
xQueue->cRxLock = LOCK_BOUND - 1;
if( !pvItemToQueue )
{
xQueue->uxItemSize = 0;
}
xQueueGenericSend( xQueue, pvItemToQueue, xTicksToWait, xCopyPosition );
}
}
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