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/*
* Copyright (c) 2015-2016, Freescale Semiconductor, Inc.
* Copyright 2016-2021 NXP
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include "fsl_common.h"
#define SDK_MEM_MAGIC_NUMBER 12345U
typedef struct _mem_align_control_block
{
uint16_t identifier; /*!< Identifier for the memory control block. */
uint16_t offset; /*!< offset from aligned address to real address */
} mem_align_cb_t;
/* Component ID definition, used by tools. */
#ifndef FSL_COMPONENT_ID
#define FSL_COMPONENT_ID "platform.drivers.common"
#endif
#if !((defined(__DSC__) && defined(__CW__)))
void *SDK_Malloc(size_t size, size_t alignbytes)
{
mem_align_cb_t *p_cb = NULL;
uint32_t alignedsize;
/* Check overflow. */
alignedsize = (uint32_t)(unsigned int)SDK_SIZEALIGN(size, alignbytes);
if (alignedsize < size)
{
return NULL;
}
if (alignedsize > SIZE_MAX - alignbytes - sizeof(mem_align_cb_t))
{
return NULL;
}
alignedsize += alignbytes + (uint32_t)sizeof(mem_align_cb_t);
union
{
void *pointer_value;
uintptr_t unsigned_value;
} p_align_addr, p_addr;
p_addr.pointer_value = malloc((size_t)alignedsize);
if (p_addr.pointer_value == NULL)
{
return NULL;
}
p_align_addr.unsigned_value = SDK_SIZEALIGN(p_addr.unsigned_value + sizeof(mem_align_cb_t), alignbytes);
p_cb = (mem_align_cb_t *)(p_align_addr.unsigned_value - 4U);
p_cb->identifier = SDK_MEM_MAGIC_NUMBER;
p_cb->offset = (uint16_t)(p_align_addr.unsigned_value - p_addr.unsigned_value);
return p_align_addr.pointer_value;
}
void SDK_Free(void *ptr)
{
union
{
void *pointer_value;
uintptr_t unsigned_value;
} p_free;
p_free.pointer_value = ptr;
mem_align_cb_t *p_cb = (mem_align_cb_t *)(p_free.unsigned_value - 4U);
if (p_cb->identifier != SDK_MEM_MAGIC_NUMBER)
{
return;
}
p_free.unsigned_value = p_free.unsigned_value - p_cb->offset;
free(p_free.pointer_value);
}
#endif
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