diff options
Diffstat (limited to '')
| -rw-r--r-- | cpukit/score/src/memoryzerobeforeuse.c | 34 | ||||
| -rw-r--r-- | cpukit/score/src/memoryzerofreeareas.c | 37 | ||||
| -rw-r--r-- | cpukit/score/src/wkspace.c | 6 |
3 files changed, 71 insertions, 6 deletions
diff --git a/cpukit/score/src/memoryzerobeforeuse.c b/cpukit/score/src/memoryzerobeforeuse.c new file mode 100644 index 0000000000..dd08199223 --- /dev/null +++ b/cpukit/score/src/memoryzerobeforeuse.c @@ -0,0 +1,34 @@ +/* + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (C) 2020 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> + +const bool _Memory_Zero_before_use; diff --git a/cpukit/score/src/memoryzerofreeareas.c b/cpukit/score/src/memoryzerofreeareas.c new file mode 100644 index 0000000000..28ea84970c --- /dev/null +++ b/cpukit/score/src/memoryzerofreeareas.c @@ -0,0 +1,37 @@ +/* + * SPDX-License-Identifier: BSD-2-Clause + * + * Copyright (C) 2020 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> + +void _Memory_Zero_free_areas( void ) +{ + _Memory_Fill( _Memory_Get(), 0 ); +} diff --git a/cpukit/score/src/wkspace.c b/cpukit/score/src/wkspace.c index 41c6cd3059..5a87ee4b83 100644 --- a/cpukit/score/src/wkspace.c +++ b/cpukit/score/src/wkspace.c @@ -90,7 +90,6 @@ void _Workspace_Handler_initialization( { Heap_Initialization_or_extend_handler init_or_extend; uintptr_t remaining; - bool do_zero; bool unified; uintptr_t page_size; uintptr_t overhead; @@ -101,7 +100,6 @@ void _Workspace_Handler_initialization( remaining += _Workspace_Space_for_TLS( page_size ); init_or_extend = _Heap_Initialize; - do_zero = rtems_configuration_get_do_zero_of_workspace(); unified = rtems_configuration_get_unified_work_area(); overhead = _Heap_Area_overhead( page_size ); @@ -112,10 +110,6 @@ void _Workspace_Handler_initialization( area = _Memory_Get_area( mem, i ); free_size = _Memory_Get_free_size( area ); - if ( do_zero ) { - memset( _Memory_Get_free_begin( area ), 0, free_size ); - } - if ( free_size > overhead ) { uintptr_t space_available; uintptr_t size; |