1 files changed, 63 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..afbad309
--- /dev/null
+++ b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-MemFree.c
@@ -0,0 +1,63 @@
+/* $Id: bs3-cmn-MemFree.c $ */
+/** @file
+ * BS3Kit - Bs3MemFree
+ */
+
+/*
+ * 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 "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);
+    }
+}
+