VirtualBox

source: vbox/trunk/src/VBox/Runtime/common/asm/ASMSetXcr0.asm@ 103795

Last change on this file since 103795 was 98103, checked in by vboxsync, 2 years ago

Copyright year updates by scm.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 2.3 KB
Line 
1; $Id: ASMSetXcr0.asm 98103 2023-01-17 14:15:46Z vboxsync $
2;; @file
3; IPRT - ASMSetXcr0().
4;
5
6;
7; Copyright (C) 2006-2023 Oracle and/or its affiliates.
8;
9; This file is part of VirtualBox base platform packages, as
10; available from https://www.virtualbox.org.
11;
12; This program is free software; you can redistribute it and/or
13; modify it under the terms of the GNU General Public License
14; as published by the Free Software Foundation, in version 3 of the
15; License.
16;
17; This program is distributed in the hope that it will be useful, but
18; WITHOUT ANY WARRANTY; without even the implied warranty of
19; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20; General Public License for more details.
21;
22; You should have received a copy of the GNU General Public License
23; along with this program; if not, see <https://www.gnu.org/licenses>.
24;
25; The contents of this file may alternatively be used under the terms
26; of the Common Development and Distribution License Version 1.0
27; (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
28; in the VirtualBox distribution, in which case the provisions of the
29; CDDL are applicable instead of those of the GPL.
30;
31; You may elect to license modified versions of this file under the
32; terms and conditions of either the GPL or the CDDL or both.
33;
34; SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
35;
36
37;*******************************************************************************
38;* Header Files *
39;*******************************************************************************
40%define RT_ASM_WITH_SEH64
41%include "iprt/asmdefs.mac"
42
43BEGINCODE
44
45;;
46; Sets the content of the Xcr0 CPU register.
47; @param uXcr0 The new XCR0 content.
48; msc=rcx, gcc=rdi, x86=[esp+4]
49;
50RT_BEGINPROC ASMSetXcr0
51SEH64_END_PROLOGUE
52%ifdef ASM_CALL64_MSC
53 mov rdx, rcx
54 shr rdx, 32
55 mov eax, ecx
56%elifdef ASM_CALL64_GCC
57 mov rdx, rdi
58 shr rdx, 32
59 mov eax, edi
60%elif ARCH_BITS == 32
61 mov eax, [esp + 4]
62 mov edx, [esp + 8]
63%elif ARCH_BITS == 16
64 push bp
65 mov bp, sp
66 mov eax, [bp + 4]
67 mov edx, [bp + 8]
68%else
69 %error "Undefined arch?"
70%endif
71
72 xor ecx, ecx
73 xsetbv
74
75%if ARCH_BITS == 16
76 leave
77%endif
78 ret
79ENDPROC ASMSetXcr0
80
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