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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 03:01:46 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-06 03:01:46 +0000
commitf8fe689a81f906d1b91bb3220acde2a4ecb14c5b (patch)
tree26484e9d7e2c67806c2d1760196ff01aaa858e8c /src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-SlabInit.c
parentInitial commit. (diff)
downloadvirtualbox-f8fe689a81f906d1b91bb3220acde2a4ecb14c5b.tar.xz
virtualbox-f8fe689a81f906d1b91bb3220acde2a4ecb14c5b.zip
Adding upstream version 6.0.4-dfsg.upstream/6.0.4-dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-SlabInit.c')
-rw-r--r--src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-SlabInit.c62
1 files changed, 62 insertions, 0 deletions
diff --git a/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-SlabInit.c b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-SlabInit.c
new file mode 100644
index 00000000..bf123dd1
--- /dev/null
+++ b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-SlabInit.c
@@ -0,0 +1,62 @@
+/* $Id: bs3-cmn-SlabInit.c $ */
+/** @file
+ * BS3Kit - Bs3SlabInit
+ */
+
+/*
+ * Copyright (C) 2007-2019 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE 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.
+ */
+
+
+/*********************************************************************************************************************************
+* Header Files *
+*********************************************************************************************************************************/
+#include "bs3kit-template-header.h"
+#include <iprt/asm.h>
+
+
+#undef Bs3SlabInit
+BS3_CMN_DEF(void, Bs3SlabInit,(PBS3SLABCTL pSlabCtl, size_t cbSlabCtl, uint32_t uFlatSlabPtr, uint32_t cbSlab, uint16_t cbChunk))
+{
+ uint16_t cBits;
+ BS3_ASSERT(RT_IS_POWER_OF_TWO(cbChunk));
+ BS3_ASSERT(cbSlab >= cbChunk * 4);
+ BS3_ASSERT(!(uFlatSlabPtr & (cbChunk - 1)));
+
+ BS3_XPTR_SET_FLAT(BS3SLABCTL, pSlabCtl->pNext, 0);
+ BS3_XPTR_SET_FLAT(BS3SLABCTL, pSlabCtl->pHead, 0);
+ BS3_XPTR_SET_FLAT(BS3SLABCTL, pSlabCtl->pbStart, uFlatSlabPtr);
+ pSlabCtl->cbChunk = cbChunk;
+ pSlabCtl->cChunkShift = ASMBitFirstSetU16(cbChunk) - 1;
+ pSlabCtl->cChunks = cbSlab >> pSlabCtl->cChunkShift;
+ pSlabCtl->cFreeChunks = pSlabCtl->cChunks;
+ cBits = RT_ALIGN_T(pSlabCtl->cChunks, 32, uint16_t);
+ BS3_ASSERT(cbSlabCtl >= RT_UOFFSETOF_DYN(BS3SLABCTL, bmAllocated[cBits >> 3]));
+ Bs3MemZero(&pSlabCtl->bmAllocated, cBits >> 3);
+
+ /* Mark excess bitmap padding bits as allocated. */
+ if (cBits != pSlabCtl->cChunks)
+ {
+ uint16_t iBit;
+ for (iBit = pSlabCtl->cChunks; iBit < cBits; iBit++)
+ ASMBitSet(pSlabCtl->bmAllocated, iBit);
+ }
+}
+