From f215e02bf85f68d3a6106c2a1f4f7f063f819064 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:17:27 +0200 Subject: Adding upstream version 7.0.14-dfsg. Signed-off-by: Daniel Baumann --- src/VBox/Runtime/common/asm/ASMGetXcr0.asm | 66 ++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 src/VBox/Runtime/common/asm/ASMGetXcr0.asm (limited to 'src/VBox/Runtime/common/asm/ASMGetXcr0.asm') diff --git a/src/VBox/Runtime/common/asm/ASMGetXcr0.asm b/src/VBox/Runtime/common/asm/ASMGetXcr0.asm new file mode 100644 index 00000000..0da411b9 --- /dev/null +++ b/src/VBox/Runtime/common/asm/ASMGetXcr0.asm @@ -0,0 +1,66 @@ +; $Id: ASMGetXcr0.asm $ +;; @file +; IPRT - ASMGetXcr0(). +; + +; +; 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 . +; +; 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 + +;; +; Gets the content of the XCR0 CPU register. +; @returns XCR0 value in rax (amd64) / edx:eax (x86). +; +RT_BEGINPROC ASMGetXcr0 +SEH64_END_PROLOGUE + xor ecx, ecx ; XCR0 + xgetbv +%ifdef RT_ARCH_AMD64 + shl rdx, 32 + or rax, rdx +%endif +%if ARCH_BITS == 16 ; DX:CX:BX:AX - DX=15:0, CX=31:16, BX=47:32, AX=63:48 + mov ebx, edx + mov ecx, eax + shr ecx, 16 + xchg eax, edx + shr eax, 16 +%endif + ret +ENDPROC ASMGetXcr0 + -- cgit v1.2.3