128 lines
4.5 KiB
C
128 lines
4.5 KiB
C
/****************************************************************************
|
|
* mm/kmm_heap/kmm_kernel.c
|
|
*
|
|
* Copyright (C) 2013-2014 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* 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.
|
|
* 3. Neither the name NuttX nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* 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.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <assert.h>
|
|
|
|
#include <nuttx/kmalloc.h>
|
|
|
|
#if ((defined(CONFIG_BUILD_PROTECTED) && defined(__KERNEL__)) || \
|
|
defined(CONFIG_BUILD_KERNEL)) && defined(CONFIG_MM_KERNEL_HEAP)
|
|
|
|
/****************************************************************************
|
|
* Pre-processor definition
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Types
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Data
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: kmm_heapmember
|
|
*
|
|
* Description:
|
|
* Check if an address lies in the kernel heap.
|
|
*
|
|
* Parameters:
|
|
* mem - The address to check
|
|
*
|
|
* Return Value:
|
|
* true if the address is a member of the kernel heap. false if not
|
|
* not. If the address is not a member of the kernel heap, then it
|
|
* must be a member of the user-space heap (unchecked)
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_DEBUG
|
|
bool kmm_heapmember(FAR void *mem)
|
|
{
|
|
#if CONFIG_MM_REGIONS > 1
|
|
int i;
|
|
|
|
/* A valid address from the kernel heap for this region would have to lie
|
|
* between the region's two guard nodes.
|
|
*/
|
|
|
|
for (i = 0; i < g_kmmheap.mm_nregions; i++)
|
|
{
|
|
if (mem > (FAR void *)g_kmmheap.mm_heapstart[i] &&
|
|
mem < (FAR void *)g_kmmheap.mm_heapend[i])
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
|
|
/* The address does not like any any region assigned to kernel heap */
|
|
|
|
return false;
|
|
|
|
#else
|
|
/* A valid address from the kernel heap would have to lie between the
|
|
* two guard nodes.
|
|
*/
|
|
|
|
if (mem > (FAR void *)g_kmmheap.mm_heapstart[0] &&
|
|
mem < (FAR void *)g_kmmheap.mm_heapend[0])
|
|
{
|
|
return true;
|
|
}
|
|
|
|
/* Otherwise, the address does not lie in the kernel heap */
|
|
|
|
return false;
|
|
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
#endif /* ((CONFIG_BUILD_PROTECTED && __KERNEL__) || CONFIG_BUILD_KERNEL) && CONFIG_MM_KERNEL_HEAP*/
|