1 | ; $Id: ASMSetGDTR.asm 93115 2022-01-01 11:31:46Z vboxsync $
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2 | ;; @file
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3 | ; IPRT - ASMSetGDTR().
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4 | ;
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5 |
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6 | ;
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7 | ; Copyright (C) 2006-2022 Oracle Corporation
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8 | ;
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9 | ; This file is part of VirtualBox Open Source Edition (OSE), as
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10 | ; available from http://www.virtualbox.org. This file is free software;
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11 | ; you can redistribute it and/or modify it under the terms of the GNU
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12 | ; General Public License (GPL) as published by the Free Software
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13 | ; Foundation, in version 2 as it comes in the "COPYING" file of the
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14 | ; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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15 | ; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | ;
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17 | ; The contents of this file may alternatively be used under the terms
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18 | ; of the Common Development and Distribution License Version 1.0
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19 | ; (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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20 | ; VirtualBox OSE distribution, in which case the provisions of the
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21 | ; CDDL are applicable instead of those of the GPL.
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22 | ;
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23 | ; You may elect to license modified versions of this file under the
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24 | ; terms and conditions of either the GPL or the CDDL or both.
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25 | ;
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26 |
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27 | ;*******************************************************************************
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28 | ;* Header Files *
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29 | ;*******************************************************************************
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30 | %include "iprt/asmdefs.mac"
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31 |
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32 | BEGINCODE
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33 |
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34 | ;;
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35 | ; Sets the content of the GDTR CPU register.
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36 | ; @param pGdtr Where to load the GDTR contents from.
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37 | ; msc=rcx, gcc=rdi, x86=[esp+4]
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38 | ;
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39 | RT_BEGINPROC ASMSetGDTR
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40 | %ifdef ASM_CALL64_MSC
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41 | mov rax, rcx
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42 | %elifdef ASM_CALL64_GCC
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43 | mov rax, rdi
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44 | %elifdef RT_ARCH_X86
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45 | mov eax, [esp + 4]
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46 | %else
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47 | %error "Undefined arch?"
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48 | %endif
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49 | lgdt [xAX]
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50 | ret
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51 | ENDPROC ASMSetGDTR
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52 |
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