VirtualBox

source: vbox/trunk/src/VBox/Runtime/common/math/lrintl.asm@ 8483

Last change on this file since 8483 was 8256, checked in by vboxsync, 17 years ago

rebranding, eol

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 1.8 KB
Line 
1; $Id: lrintl.asm 8256 2008-04-21 20:53:28Z vboxsync $
2;; @file
3; IPRT - No-CRT lrintl - AMD64 & X86.
4;
5
6;
7; Copyright (C) 2006-2007 Sun Microsystems, Inc.
8;
9; This file is part of VirtualBox Open Source Edition (OSE), as
10; available from http://www.virtualbox.org. This file is free software;
11; you can redistribute it and/or modify it under the terms of the GNU
12; General Public License (GPL) as published by the Free Software
13; Foundation, in version 2 as it comes in the "COPYING" file of the
14; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16;
17; The contents of this file may alternatively be used under the terms
18; of the Common Development and Distribution License Version 1.0
19; (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20; VirtualBox OSE distribution, in which case the provisions of the
21; CDDL are applicable instead of those of the GPL.
22;
23; You may elect to license modified versions of this file under the
24; terms and conditions of either the GPL or the CDDL or both.
25;
26; Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
27; Clara, CA 95054 USA or visit http://www.sun.com if you need
28; additional information or have any questions.
29;
30
31
32%include "iprt/asmdefs.mac"
33
34BEGINCODE
35
36%ifdef RT_ARCH_AMD64
37 %define _SP rsp
38 %define _BP rbp
39 %define _S 8
40%else
41 %define _SP esp
42 %define _BP ebp
43 %define _S 4
44%endif
45
46;;
47; Round rd to the nearest integer value, rounding according to the current rounding direction.
48; @returns 32-bit: eax 64-bit: rax
49; @param lrd [rbp + _S*2]
50BEGINPROC RT_NOCRT(lrintl)
51 push _BP
52 mov _BP, _SP
53 sub _SP, 10h
54
55 fld tword [_BP + _S*2]
56%ifdef RT_ARCH_AMD64
57 fistp qword [_SP]
58 fwait
59 mov rax, [_SP]
60%else
61 fistp dword [_SP]
62 fwait
63 mov eax, [_SP]
64%endif
65
66 leave
67 ret
68ENDPROC RT_NOCRT(lrintl)
69
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