forked from Imagelibrary/rtems
79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
/* SPDX-License-Identifier: BSD-2-Clause */
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/**
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* @file
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*
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* @ingroup bsp_stack
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*
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* @brief Stack initialization, allocation and free functions.
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*/
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/*
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* Copyright (C) 2009, 2013 embedded brains GmbH & Co. KG
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <bsp/stackalloc.h>
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#include <rtems.h>
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#include <rtems/score/heapimpl.h>
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#include <rtems/score/wkspace.h>
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#include <bsp/linker-symbols.h>
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static Heap_Control bsp_stack_heap;
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void bsp_stack_allocate_init(size_t stack_space_size)
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{
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_Heap_Initialize(
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&bsp_stack_heap,
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bsp_section_stack_begin,
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(uintptr_t) bsp_section_stack_size,
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CPU_STACK_ALIGNMENT
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);
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}
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void *bsp_stack_allocate(size_t size)
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{
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void *stack = NULL;
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if (bsp_stack_heap.area_begin != 0) {
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stack = _Heap_Allocate(&bsp_stack_heap, size);
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}
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if (stack == NULL) {
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stack = _Workspace_Allocate(size);
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}
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return stack;
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}
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void bsp_stack_free(void *stack)
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{
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bool ok = _Heap_Free(&bsp_stack_heap, stack);
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if (!ok) {
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_Workspace_Free(stack);
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}
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}
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