86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
/*
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* FreeRTOS memory safety proofs with CBMC.
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* Copyright (C) 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* http://aws.amazon.com/freertos
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* http://www.FreeRTOS.org
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*/
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#include "FreeRTOS.h"
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#include "queue.h"
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#include "queue_init.h"
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#include "tasksStubs.h"
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#include "cbmc.h"
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#ifndef LOCK_BOUND
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#define LOCK_BOUND 4
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#endif
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#ifndef QUEUE_PEEK_BOUND
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#define QUEUE_PEEK_BOUND 4
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#endif
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QueueHandle_t xQueue;
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/* This method is called to initialize pxTimeOut.
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* Setting up the data structure is not interesting for the proof,
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* but the harness uses it to model a release
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* on the queue after first check. */
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void vTaskInternalSetTimeOutState( TimeOut_t * const pxTimeOut )
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{
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xQueue->uxMessagesWaiting = nondet_BaseType_t();
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}
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void harness()
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{
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xQueue = xUnconstrainedQueueBoundedItemSize( 10 );
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/*Initialise the tasksStubs */
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vInitTaskCheckForTimeOut( 0, QUEUE_PEEK_BOUND - 1 );
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TickType_t xTicksToWait;
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if( xState == taskSCHEDULER_SUSPENDED )
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{
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xTicksToWait = 0;
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}
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if( xQueue )
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{
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__CPROVER_assume( xQueue->cTxLock < LOCK_BOUND - 1 );
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__CPROVER_assume( xQueue->cRxLock < LOCK_BOUND - 1 );
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void * pvItemToQueue = pvPortMalloc( xQueue->uxItemSize );
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/* In case malloc fails as this is otherwise an invariant violation. */
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if( !pvItemToQueue )
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{
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xQueue->uxItemSize = 0;
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}
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xQueuePeek( xQueue, pvItemToQueue, xTicksToWait );
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}
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}
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