1 files changed, 71 insertions, 0 deletions
diff --git a/FreeRTOS/Test/CBMC/proofs/Queue/QueueTakeMutexRecursive/QueueTakeMutexRecursive_harness.c b/FreeRTOS/Test/CBMC/proofs/Queue/QueueTakeMutexRecursive/QueueTakeMutexRecursive_harness.c
new file mode 100644
index 000000000..9864321e0
--- /dev/null
+++ b/FreeRTOS/Test/CBMC/proofs/Queue/QueueTakeMutexRecursive/QueueTakeMutexRecursive_harness.c
@@ -0,0 +1,71 @@
+/*
+ * 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 "tasksStubs.h"
+#include "queue_datastructure.h"
+#include "cbmc.h"
+
+QueueHandle_t xMutex;
+
+void vTaskInternalSetTimeOutState( TimeOut_t * const pxTimeOut )
+{
+	/* QueueSemaphoreTake might be blocked to wait for
+	   another process to release a token to the semaphore.
+	   This is currently not in the CBMC model. Anyhow,
+	   vTaskInternalSetTimeOutState is set a timeout for
+	   QueueSemaphoreTake operation. We use this to model a successful
+	   release during wait time. */
+	UBaseType_t bound;
+	__CPROVER_assume((bound >= 0 && xMutex->uxLength >= bound));
+	xMutex->uxMessagesWaiting = bound;
+}
+
+BaseType_t xTaskGetSchedulerState( void ) {
+	BaseType_t ret;
+	__CPROVER_assume(ret != taskSCHEDULER_SUSPENDED);
+	return ret;
+}
+
+void harness() {
+	uint8_t ucQueueType;
+	xMutex = xQueueCreateMutex(ucQueueType);
+	TickType_t xTicksToWait;
+
+	/* Init task stub to make sure that the QueueSemaphoreTake_BOUND - 1
+	   loop iteration simulates a time out */
+ 	vInitTaskCheckForTimeOut(0, QueueSemaphoreTake_BOUND - 1);
+
+	if(xMutex){
+		xMutex->cTxLock = PRV_UNLOCK_UNWINDING_BOUND - 1;
+		xMutex->cRxLock = PRV_UNLOCK_UNWINDING_BOUND - 1;
+		xMutex->uxMessagesWaiting = nondet_UBaseType_t();
+		xQueueTakeMutexRecursive(xMutex, xTicksToWait);
+	}
+}