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/* $Id: bs3-cmn-MemFree.c $ */
/** @file
* BS3Kit - Bs3MemFree
*/
/*
* Copyright (C) 2007-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include "bs3kit-template-header.h"
#include "bs3-cmn-memory.h"
#undef Bs3MemFree
BS3_CMN_DEF(void, Bs3MemFree,(void BS3_FAR *pv, size_t cb))
{
if (pv != NULL)
{
uint16_t cChunks;
PBS3SLABCTL pCtl;
BS3_XPTR_AUTO(void, pvFlat);
BS3_XPTR_SET(void, pvFlat, pv);
if (BS3_XPTR_GET_FLAT(void, pvFlat) & 0xfffU)
{
/* Use an XPTR here in case we're in real mode and the caller has
messed around with the pointer. */
BS3_XPTR_AUTO(BS3SLABCTL, pTmp);
BS3_XPTR_SET_FLAT(BS3SLABCTL, pTmp, BS3_XPTR_GET_FLAT(void, pvFlat) & ~(uint32_t)0xfff);
pCtl = BS3_XPTR_GET(BS3SLABCTL, pTmp);
BS3_ASSERT(pCtl->cbChunk >= cb);
cChunks = 1;
}
else
{
pCtl = BS3_XPTR_GET_FLAT(void, pvFlat) < _1M ? &g_Bs3Mem4KLow.Core : &g_Bs3Mem4KUpperTiled.Core;
cChunks = RT_ALIGN_Z(cb, _4K) >> 12;
}
Bs3SlabFree(pCtl, BS3_XPTR_GET_FLAT(void, pvFlat), cChunks);
}
}
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