/* SPDX-License-Identifier: BSD-2-Clause */
/**
* @file
*
* @ingroup bsp_stack
*
* @brief Stack initialization, allocation and free functions.
*/
/*
* Copyright (C) 2009, 2013 embedded brains GmbH & Co. KG
*
* 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.
*/
#include <bsp/stackalloc.h>
#include <rtems.h>
#include <rtems/score/heapimpl.h>
#include <rtems/score/wkspace.h>
#include <bsp/linker-symbols.h>
static Heap_Control bsp_stack_heap;
void bsp_stack_allocate_init(size_t stack_space_size)
{
_Heap_Initialize(
&bsp_stack_heap,
bsp_section_stack_begin,
(uintptr_t) bsp_section_stack_size,
CPU_STACK_ALIGNMENT
);
}
void *bsp_stack_allocate(size_t size)
{
void *stack = NULL;
if (bsp_stack_heap.area_begin != 0) {
stack = _Heap_Allocate(&bsp_stack_heap, size);
}
if (stack == NULL) {
stack = _Workspace_Allocate(size);
}
return stack;
}
void bsp_stack_free(void *stack)
{
bool ok = _Heap_Free(&bsp_stack_heap, stack);
if (!ok) {
_Workspace_Free(stack);
}
}
