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Diffstat (limited to 'src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-memory.h')
| -rw-r--r-- | src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-memory.h | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-memory.h b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-memory.h new file mode 100644 index 00000000..efcf459b --- /dev/null +++ b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-memory.h @@ -0,0 +1,109 @@ +/* $Id: bs3-cmn-memory.h $ */ +/** @file + * BS3Kit - Internal Memory Structures, Variables and Functions. + */ + +/* + * 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 + */ + +#ifndef BS3KIT_INCLUDED_bs3_cmn_memory_h +#define BS3KIT_INCLUDED_bs3_cmn_memory_h +#ifndef RT_WITHOUT_PRAGMA_ONCE +# pragma once +#endif + +#include "bs3kit.h" +#include <iprt/asm.h> + +RT_C_DECLS_BEGIN; + + +typedef union BS3SLABCTLLOW +{ + BS3SLABCTL Core; + uint32_t au32Alloc[(sizeof(BS3SLABCTL) + (0xA0000 / _4K / 8) ) / 4]; +} BS3SLABCTLLOW; +#ifndef DOXYGEN_RUNNING +# define g_Bs3Mem4KLow BS3_DATA_NM(g_Bs3Mem4KLow) +#endif +extern BS3SLABCTLLOW g_Bs3Mem4KLow; + + +typedef union BS3SLABCTLUPPERTILED +{ + BS3SLABCTL Core; + uint32_t au32Alloc[(sizeof(BS3SLABCTL) + ((BS3_SEL_TILED_AREA_SIZE - _1M) / _4K / 8) ) / 4]; +} BS3SLABCTLUPPERTILED; +#ifndef DOXYGEN_RUNNING +# define g_Bs3Mem4KUpperTiled BS3_DATA_NM(g_Bs3Mem4KUpperTiled) +#endif +extern BS3SLABCTLUPPERTILED g_Bs3Mem4KUpperTiled; + + +/** The number of chunk sizes used by the slab list arrays + * (g_aBs3LowSlabLists, g_aBs3UpperTiledSlabLists, more?). */ +#define BS3_MEM_SLAB_LIST_COUNT 6 + +#ifndef DOXYGEN_RUNNING +# define g_aiBs3SlabListsByPowerOfTwo BS3_DATA_NM(g_aiBs3SlabListsByPowerOfTwo) +# define g_acbBs3SlabLists BS3_DATA_NM(g_acbBs3SlabLists) +# define g_aBs3LowSlabLists BS3_DATA_NM(g_aBs3LowSlabLists) +# define g_aBs3UpperTiledSlabLists BS3_DATA_NM(g_aBs3UpperTiledSlabLists) +# define g_cbBs3SlabCtlSizesforLists BS3_DATA_NM(g_cbBs3SlabCtlSizesforLists) +#endif +extern uint8_t const g_aiBs3SlabListsByPowerOfTwo[12]; +extern uint16_t const g_acbBs3SlabLists[BS3_MEM_SLAB_LIST_COUNT]; +extern BS3SLABHEAD g_aBs3LowSlabLists[BS3_MEM_SLAB_LIST_COUNT]; +extern BS3SLABHEAD g_aBs3UpperTiledSlabLists[BS3_MEM_SLAB_LIST_COUNT]; +extern uint16_t const g_cbBs3SlabCtlSizesforLists[BS3_MEM_SLAB_LIST_COUNT]; + + +/** + * Translates a allocation request size to a slab list index. + * + * @returns Slab list index if small request, UINT8_MAX if large. + * @param cbRequest The number of bytes requested. + */ +DECLINLINE(uint8_t) bs3MemSizeToSlabListIndex(size_t cbRequest) +{ + if (cbRequest <= g_acbBs3SlabLists[BS3_MEM_SLAB_LIST_COUNT - 1]) + { + unsigned idx = cbRequest ? ASMBitLastSetU16((uint16_t)(cbRequest - 1)) : 0; + return g_aiBs3SlabListsByPowerOfTwo[idx]; + } + return UINT8_MAX; +} + + +RT_C_DECLS_END; + +#endif /* !BS3KIT_INCLUDED_bs3_cmn_memory_h */ + |