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Diffstat (limited to '')
-rw-r--r-- | src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-MemFree.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-MemFree.c b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-MemFree.c new file mode 100644 index 00000000..f7592832 --- /dev/null +++ b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-MemFree.c @@ -0,0 +1,73 @@ +/* $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); + } +} + |