diff options
Diffstat (limited to 'src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-SelProtFar32ToFlat32.c')
-rw-r--r-- | src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-SelProtFar32ToFlat32.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-SelProtFar32ToFlat32.c b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-SelProtFar32ToFlat32.c new file mode 100644 index 00000000..0089d779 --- /dev/null +++ b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-SelProtFar32ToFlat32.c @@ -0,0 +1,45 @@ +/* $Id: bs3-cmn-SelProtFar32ToFlat32.c $ */ +/** @file + * BS3Kit - Bs3SelProtFar32ToFlat32 + */ + +/* + * 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. + */ + +#include "bs3kit-template-header.h" + + +#undef Bs3SelProtFar32ToFlat32 +BS3_CMN_DEF(uint32_t, Bs3SelProtFar32ToFlat32,(uint32_t off, uint16_t uSel)) +{ + uint32_t uRet; + PCX86DESC pEntry; + if (!(uSel & X86_SEL_LDT)) + pEntry = &Bs3Gdt[uSel >> X86_SEL_SHIFT]; + else + pEntry = &Bs3Ldt[uSel >> X86_SEL_SHIFT]; + uRet = pEntry->Gen.u16BaseLow; + uRet |= (uint32_t)pEntry->Gen.u8BaseHigh1 << 16; + uRet |= (uint32_t)pEntry->Gen.u8BaseHigh2 << 24; + uRet += off; + return uRet; +} + |