mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
synced 2025-10-15 09:17:44 -04:00
116 lines
3.9 KiB
C
116 lines
3.9 KiB
C
/*
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* FreeRTOS V202212.00
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* Copyright (C) 2020 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 obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* 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, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN 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 SOFTWARE.
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*
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* https://www.FreeRTOS.org
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* https://github.com/FreeRTOS
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*
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*/
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/* Standard includes. */
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#include <stdint.h>
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#include <stdio.h>
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/* FreeRTOS includes. */
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#include "FreeRTOS.h"
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#include "task.h"
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#include "semphr.h"
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/*
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* CBMC models a pointer as an object id and an offset into that
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* object. The top bits of a pointer encode the object id and the
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* remaining bits encode the offset. This means there is a bound on
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* the maximum offset into an object in CBMC, and hence a bound on the
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* size of objects in CBMC.
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*/
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#define CBMC_BITS 7
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#define CBMC_MAX_OBJECT_SIZE ( 0xFFFFFFFF >> ( CBMC_BITS + 1 ) )
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#define IMPLIES( a, b ) ( !( a ) || ( b ) )
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BaseType_t nondet_basetype();
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UBaseType_t nondet_ubasetype();
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TickType_t nondet_ticktype();
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int32_t nondet_int32();
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uint32_t nondet_uint32();
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size_t nondet_sizet();
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#define nondet_BaseType() nondet_basetype()
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void * safeMalloc( size_t size );
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enum CBMC_LOOP_CONDITION
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{
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CBMC_LOOP_BREAK, CBMC_LOOP_CONTINUE, CBMC_LOOP_RETURN
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};
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/* CBMC specification: capture old value for precondition and */
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/* postcondition checking */
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#define OLDVAL( var ) _old_ ## var
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#define SAVE_OLDVAL( var, typ ) const typ OLDVAL( var ) = var
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/* CBMC specification: capture old value for values passed by */
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/* reference in function abstractions */
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#define OBJ( var ) ( * var )
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#define OLDOBJ( var ) _oldobj_ ## var
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#define SAVE_OLDOBJ( var, typ ) const typ OLDOBJ( var ) = OBJ( var )
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/* CBMC debugging: printfs for expressions */
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#define __CPROVER_printf( var ) { uint32_t ValueOf_ ## var = ( uint32_t ) var; }
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#define __CPROVER_printf2( str, exp ) { uint32_t ValueOf_ ## str = ( uint32_t ) ( exp ); }
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/* CBMC debugging: printfs for pointer expressions */
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#define __CPROVER_printf_ptr( var ) { uint8_t * ValueOf_ ## var = ( uint8_t * ) var; }
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#define __CPROVER_printf2_ptr( str, exp ) { uint8_t * ValueOf_ ## str = ( uint8_t * ) ( exp ); }
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/*
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* An assertion that pvPortMalloc returns NULL when asked to allocate 0 bytes.
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* This assertion is used in some of the TaskPool proofs.
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*/
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#define __CPROVER_assert_zero_allocation() \
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__CPROVER_assert( pvPortMalloc( 0 ) == NULL, \
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"pvPortMalloc allows zero-allocated memory." )
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/*
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* A stub for pvPortMalloc that nondeterministically chooses to return
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* either NULL or an allocation of the requested space. The stub is
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* guaranteed to return NULL when asked to allocate 0 bytes.
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* This stub is used in some of the TaskPool proofs.
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*/
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void * pvPortMalloc( size_t xWantedSize )
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{
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if( xWantedSize == 0 )
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{
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return NULL;
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}
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return nondet_bool() ? malloc( xWantedSize ) : NULL;
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}
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void vPortFree( void * pv )
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{
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( void ) pv;
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free( pv );
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}
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