Update #3838. --- cpukit/Makefile.am | 1 + cpukit/include/rtems/score/memory.h | 11 ++++++++- cpukit/score/src/memorydirty.c | 48 +++++++++++++++++++++++++++++++++++++ 3 files changed, 59 insertions(+), 1 deletion(-) create mode 100644 cpukit/score/src/memorydirty.c
diff --git a/cpukit/Makefile.am b/cpukit/Makefile.am index 4f21b48a32..62c34c9c00 100644 --- a/cpukit/Makefile.am +++ b/cpukit/Makefile.am @@ -853,6 +853,7 @@ librtemscpu_a_SOURCES += score/src/heapiterate.c librtemscpu_a_SOURCES += score/src/heapgreedy.c librtemscpu_a_SOURCES += score/src/heapnoextend.c librtemscpu_a_SOURCES += score/src/memoryallocate.c +librtemscpu_a_SOURCES += score/src/memorydirty.c librtemscpu_a_SOURCES += score/src/objectallocate.c librtemscpu_a_SOURCES += score/src/objectclose.c librtemscpu_a_SOURCES += score/src/objectextendinformation.c diff --git a/cpukit/include/rtems/score/memory.h b/cpukit/include/rtems/score/memory.h index e4d1198862..dd3b7833a3 100644 --- a/cpukit/include/rtems/score/memory.h +++ b/cpukit/include/rtems/score/memory.h @@ -306,7 +306,7 @@ const Memory_Information *_Memory_Get( void ); /** * @brief Allocate a memory area from the memory information. * - * It is not possible to free the memory allocated by this function. + * It is not possible to free the memory area allocated by this function. * * @param information The memory information. * @param size The size in bytes of the memory area to allocate. @@ -322,6 +322,15 @@ void *_Memory_Allocate( uintptr_t alignment ); +/** + * @brief Dirty all free memory areas of the memory information. + * + * Write 0xcf to all bytes of the free memory areas. + * + * @param information The memory information. + */ +void _Memory_Dirty( const Memory_Information *information ); + /** @} */ #ifdef __cplusplus diff --git a/cpukit/score/src/memorydirty.c b/cpukit/score/src/memorydirty.c new file mode 100644 index 0000000000..b404ca126c --- /dev/null +++ b/cpukit/score/src/memorydirty.c @@ -0,0 +1,48 @@ +/* + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (C) 2019 embedded brains GmbH + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#if HAVE_CONFIG_H +#include "config.h" +#endif + +#include <rtems/score/memory.h> + +#include <string.h> + +void _Memory_Dirty( const Memory_Information *information ) +{ + Memory_Area *area; + const Memory_Area *end; + + area = &information->areas[ 0 ]; + end = &information->areas[ information->count ]; + + while ( area != end ) { + memset( _Memory_Free_begin( area ), 0xcf, _Memory_Free_size( area ) ); + ++area; + } +} -- 2.16.4 _______________________________________________ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel