; $Id: ASMSetGDTR.asm $ ;; @file ; IPRT - ASMSetGDTR(). ; ; ; Copyright (C) 2006-2020 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 "iprt/asmdefs.mac" BEGINCODE ;; ; Sets the content of the GDTR CPU register. ; @param pGdtr Where to load the GDTR contents from. ; msc=rcx, gcc=rdi, x86=[esp+4] ; BEGINPROC_EXPORTED ASMSetGDTR %ifdef ASM_CALL64_MSC mov rax, rcx %elifdef ASM_CALL64_GCC mov rax, rdi %elifdef RT_ARCH_X86 mov eax, [esp + 4] %else %error "Undefined arch?" %endif lgdt [xAX] ret ENDPROC ASMSetGDTR