| 1 | /* $Id: bs3-cmn-MemFree.c 62484 2016-07-22 18:35:33Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * BS3Kit - Bs3MemFree
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2007-2016 Oracle Corporation
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 11 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 12 | * General Public License (GPL) as published by the Free Software
|
|---|
| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | *
|
|---|
| 17 | * The contents of this file may alternatively be used under the terms
|
|---|
| 18 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
|---|
| 20 | * VirtualBox OSE distribution, in which case the provisions of the
|
|---|
| 21 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 22 | *
|
|---|
| 23 | * You may elect to license modified versions of this file under the
|
|---|
| 24 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 25 | */
|
|---|
| 26 |
|
|---|
| 27 |
|
|---|
| 28 | /*********************************************************************************************************************************
|
|---|
| 29 | * Header Files *
|
|---|
| 30 | *********************************************************************************************************************************/
|
|---|
| 31 | #include "bs3kit-template-header.h"
|
|---|
| 32 | #include "bs3-cmn-memory.h"
|
|---|
| 33 |
|
|---|
| 34 |
|
|---|
| 35 | #undef Bs3MemFree
|
|---|
| 36 | BS3_CMN_DEF(void, Bs3MemFree,(void BS3_FAR *pv, size_t cb))
|
|---|
| 37 | {
|
|---|
| 38 | if (pv != NULL)
|
|---|
| 39 | {
|
|---|
| 40 | uint16_t cChunks;
|
|---|
| 41 | PBS3SLABCTL pCtl;
|
|---|
| 42 | BS3_XPTR_AUTO(void, pvFlat);
|
|---|
| 43 | BS3_XPTR_SET(void, pvFlat, pv);
|
|---|
| 44 |
|
|---|
| 45 | if (BS3_XPTR_GET_FLAT(void, pvFlat) & 0xfffU)
|
|---|
| 46 | {
|
|---|
| 47 | /* Use an XPTR here in case we're in real mode and the caller has
|
|---|
| 48 | messed around with the pointer. */
|
|---|
| 49 | BS3_XPTR_AUTO(BS3SLABCTL, pTmp);
|
|---|
| 50 | BS3_XPTR_SET_FLAT(BS3SLABCTL, pTmp, BS3_XPTR_GET_FLAT(void, pvFlat) & ~(uint32_t)0xfff);
|
|---|
| 51 | pCtl = BS3_XPTR_GET(BS3SLABCTL, pTmp);
|
|---|
| 52 | BS3_ASSERT(pCtl->cbChunk >= cb);
|
|---|
| 53 | cChunks = 1;
|
|---|
| 54 | }
|
|---|
| 55 | else
|
|---|
| 56 | {
|
|---|
| 57 | pCtl = BS3_XPTR_GET_FLAT(void, pvFlat) < _1M ? &g_Bs3Mem4KLow.Core : &g_Bs3Mem4KUpperTiled.Core;
|
|---|
| 58 | cChunks = RT_ALIGN_Z(cb, _4K) >> 12;
|
|---|
| 59 | }
|
|---|
| 60 | Bs3SlabFree(pCtl, BS3_XPTR_GET_FLAT(void, pvFlat), cChunks);
|
|---|
| 61 | }
|
|---|
| 62 | }
|
|---|
| 63 |
|
|---|
