1 files changed, 72 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..4d50ee4c
--- /dev/null
+++ b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-SlabInit.c
@@ -0,0 +1,72 @@
+/* $Id: bs3-cmn-SlabInit.c $ */
+/** @file
+ * BS3Kit - Bs3SlabInit
+ */
+
+/*
+ * 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 <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);
+    }
+}
+