VirtualBox

source: vbox/trunk/src/VBox/Runtime/common/math/ldexpl.asm@ 81106

Last change on this file since 81106 was 76553, checked in by vboxsync, 6 years ago

scm --update-copyright-year

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 1.5 KB
Line 
1; $Id: ldexpl.asm 76553 2019-01-01 01:45:53Z vboxsync $
2;; @file
3; IPRT - No-CRT ldexpl - AMD64 & X86.
4;
5
6;
7; Copyright (C) 2006-2019 Oracle Corporation
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
27%include "iprt/asmdefs.mac"
28
29BEGINCODE
30
31;;
32; Computes lrd * 2^exp
33; @returns st(0)
34; @param lrd [rbp + xCB*2]
35; @param exp [ebp + 14h] gcc:edi msc:ecx
36BEGINPROC RT_NOCRT(ldexpl)
37 push xBP
38 mov xBP, xSP
39 sub xSP, 10h
40
41 ; load exp
42%ifdef RT_ARCH_AMD64 ; ASSUMES ONLY GCC HERE!
43 mov [rsp], edi
44 fild dword [rsp]
45%else
46 fild dword [ebp + xCB*2 + RTLRD_CB]
47%endif
48 fld tword [xBP + xCB*2]
49 fscale
50 fstp st1
51
52 leave
53 ret
54ENDPROC RT_NOCRT(ldexpl)
55
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