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-rw-r--r--src/VBox/Runtime/common/asm/ASMXSave.asm73
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diff --git a/src/VBox/Runtime/common/asm/ASMXSave.asm b/src/VBox/Runtime/common/asm/ASMXSave.asm
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+; $Id: ASMXSave.asm $
+;; @file
+; IPRT - ASMXSave().
+;
+
+;
+; Copyright (C) 2006-2023 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 *
+;*******************************************************************************
+%define RT_ASM_WITH_SEH64
+%include "iprt/asmdefs.mac"
+
+BEGINCODE
+
+;;
+; Saves extended CPU state.
+; @param pXStateArea Pointer to the XSAVE state area.
+; msc=rcx, gcc=rdi, x86=[esp+4]
+; @param fComponents The 64-bit state component mask.
+; msc=rdx, gcc=rsi, x86=[esp+8]
+;
+RT_BEGINPROC ASMXSave
+SEH64_END_PROLOGUE
+%ifdef ASM_CALL64_MSC
+ mov eax, edx
+ shr rdx, 32
+ xsave [rcx]
+%elifdef ASM_CALL64_GCC
+ mov rdx, rsi
+ shr rdx, 32
+ mov eax, esi
+ xsave [rdi]
+%elifdef RT_ARCH_X86
+ mov ecx, [esp + 4]
+ mov eax, [esp + 8]
+ mov edx, [esp + 12]
+ xsave [ecx]
+%else
+ %error "Undefined arch?"
+%endif
+ ret
+ENDPROC ASMXSave
+