mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
synced 2025-10-15 09:17:44 -04:00
127 lines
4 KiB
C
127 lines
4 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_SEND_BOUND
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#define QUEUE_SEND_BOUND 4
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#endif
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#if( configUSE_QUEUE_SETS == 0 )
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BaseType_t prvCopyDataToQueue( Queue_t * const pxQueue, const void *pvItemToQueue, const BaseType_t xPosition )
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{
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if(pxQueue->uxItemSize > ( UBaseType_t ) 0)
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{
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__CPROVER_assert(__CPROVER_r_ok(pvItemToQueue, ( size_t ) pxQueue->uxItemSize), "pvItemToQueue region must be readable");
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if(xPosition == queueSEND_TO_BACK){
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__CPROVER_assert(__CPROVER_w_ok(( void * ) pxQueue->pcWriteTo, ( size_t ) pxQueue->uxItemSize), "pxQueue->pcWriteTo region must be writable");
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}else{
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__CPROVER_assert(__CPROVER_w_ok(( void * ) pxQueue->u.xQueue.pcReadFrom, ( size_t ) pxQueue->uxItemSize), "pxQueue->u.xQueue.pcReadFrom region must be writable");
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}
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return pdFALSE;
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}else
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{
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return nondet_BaseType_t();
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}
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}
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#else
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BaseType_t prvNotifyQueueSetContainer( const Queue_t * const pxQueue )
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{
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Queue_t *pxQueueSetContainer = pxQueue->pxQueueSetContainer;
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configASSERT( pxQueueSetContainer );
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}
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void prvUnlockQueue( Queue_t * const pxQueue ) {
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configASSERT( pxQueue );
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if( pxQueue->pxQueueSetContainer != NULL )
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{
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prvNotifyQueueSetContainer(pxQueue);
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}
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listLIST_IS_EMPTY( &( pxQueue->xTasksWaitingToReceive ) );
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pxQueue->cTxLock = queueUNLOCKED;
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listLIST_IS_EMPTY( &( pxQueue->xTasksWaitingToSend ) );
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pxQueue->cRxLock = queueUNLOCKED;
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}
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#endif
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void harness(){
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//Initialise the tasksStubs
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vInitTaskCheckForTimeOut(0, QUEUE_SEND_BOUND - 1);
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xState = nondet_basetype();
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QueueHandle_t xQueue =
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xUnconstrainedQueueBoundedItemSize(2);
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TickType_t xTicksToWait;
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if(xState == taskSCHEDULER_SUSPENDED){
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xTicksToWait = 0;
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}
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if(xQueue){
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void *pvItemToQueue = pvPortMalloc(xQueue->uxItemSize);
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BaseType_t xCopyPosition;
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if(xCopyPosition == queueOVERWRITE){
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xQueue->uxLength = 1;
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}
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if(xQueue->uxItemSize == 0)
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{
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/* uxQueue->xQueueType is a pointer to the head of the queue storage area.
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If an item has a sice, this pointer must not be modified after init.
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Otherwise some of the write statements will fail. */
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xQueue->uxQueueType = nondet_int8_t();
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pvItemToQueue = 0;
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}
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/* This code checks explicitly for violations of the pxQueue->uxMessagesWaiting < pxQueue->uxLength
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invariant. */
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xQueue->uxMessagesWaiting = nondet_UBaseType_t();
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/* These values are decremented during a while loop interacting with task.c.
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This interaction is currently abstracted away.*/
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xQueue->cTxLock = LOCK_BOUND - 1;
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xQueue->cRxLock = LOCK_BOUND - 1;
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if(!pvItemToQueue){
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xQueue->uxItemSize = 0;
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}
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xQueueGenericSend( xQueue, pvItemToQueue, xTicksToWait, xCopyPosition );
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}
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}
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