VirtualBox

source: vbox/trunk/src/VBox/Runtime/common/asm/ASMAtomicUoAndU64.asm@ 61888

Last change on this file since 61888 was 56290, checked in by vboxsync, 10 years ago

IPRT: Updated (C) year.

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1; $Id: ASMAtomicUoAndU64.asm 56290 2015-06-09 14:01:31Z vboxsync $
2;; @file
3; IPRT - ASMAtomicUoAndU64().
4;
5
6;
7; Copyright (C) 2013-2015 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;*******************************************************************************
28;* Header Files *
29;*******************************************************************************
30%include "iprt/asmdefs.mac"
31
32BEGINCODE
33
34;;
35; Atomically AND an unsigned 64-bit value, unordered.
36;
37; @param pu64 x86:ebp+8 gcc:rdi msc:rcx
38; @param u64Or x86:ebp+c gcc:rsi msc:rdx
39;
40; @returns void
41;
42BEGINPROC_EXPORTED ASMAtomicUoAndU64
43%ifdef RT_ARCH_AMD64
44 %ifdef ASM_CALL64_MSC
45 and [rcx], rdx
46 %else
47 and [rdi], rsi
48 %endif
49%elifdef RT_ARCH_X86
50 push ebp
51 mov ebp, esp
52 push ebx
53 push edi
54
55 mov edi, [ebp + 08h]
56 mov ebx, [ebp + 0ch]
57 mov ecx, [ebp + 0ch + 4]
58 mov eax, ebx
59 mov edx, ecx
60.try_again:
61 cmpxchg8b [edi]
62 jz .done
63 mov ebx, eax
64 and ebx, [ebp + 0ch]
65 mov ecx, edx
66 and ecx, [ebp + 0ch + 4]
67 jmp .try_again
68
69.done:
70 pop edi
71 pop ebx
72 leave
73%endif
74 ret
75ENDPROC ASMAtomicUoAndU64
76
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