fed88021ac57fb52130ac80953954919864d7e66vboxsync; IPRT - ASMAtomicCmpXchgU8().
c58f1213e628a545081c70e26c6b67a841cff880vboxsync; Copyright (C) 2006-2010 Oracle Corporation
fed88021ac57fb52130ac80953954919864d7e66vboxsync; This file is part of VirtualBox Open Source Edition (OSE), as
fed88021ac57fb52130ac80953954919864d7e66vboxsync; available from http://www.virtualbox.org. This file is free software;
fed88021ac57fb52130ac80953954919864d7e66vboxsync; you can redistribute it and/or modify it under the terms of the GNU
fed88021ac57fb52130ac80953954919864d7e66vboxsync; General Public License (GPL) as published by the Free Software
fed88021ac57fb52130ac80953954919864d7e66vboxsync; Foundation, in version 2 as it comes in the "COPYING" file of the
fed88021ac57fb52130ac80953954919864d7e66vboxsync; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
fed88021ac57fb52130ac80953954919864d7e66vboxsync; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
fed88021ac57fb52130ac80953954919864d7e66vboxsync; The contents of this file may alternatively be used under the terms
fed88021ac57fb52130ac80953954919864d7e66vboxsync; of the Common Development and Distribution License Version 1.0
fed88021ac57fb52130ac80953954919864d7e66vboxsync; (CDDL) only, as it comes in the "COPYING.CDDL" file of the
fed88021ac57fb52130ac80953954919864d7e66vboxsync; VirtualBox OSE distribution, in which case the provisions of the
fed88021ac57fb52130ac80953954919864d7e66vboxsync; CDDL are applicable instead of those of the GPL.
fed88021ac57fb52130ac80953954919864d7e66vboxsync; You may elect to license modified versions of this file under the
fed88021ac57fb52130ac80953954919864d7e66vboxsync; terms and conditions of either the GPL or the CDDL or both.
fed88021ac57fb52130ac80953954919864d7e66vboxsync;*******************************************************************************
fed88021ac57fb52130ac80953954919864d7e66vboxsync;* Header Files *
fed88021ac57fb52130ac80953954919864d7e66vboxsync;*******************************************************************************
fed88021ac57fb52130ac80953954919864d7e66vboxsync; Atomically compares and exchanges an unsigned 8-bit int.
fed88021ac57fb52130ac80953954919864d7e66vboxsync; @param pu8 x86:esp+4 msc:rcx gcc:rdi
fed88021ac57fb52130ac80953954919864d7e66vboxsync; @param u8New x86:esp+8 msc:dl gcc:sil
fed88021ac57fb52130ac80953954919864d7e66vboxsync; @param u8Old x86:esp+c msc:r8l gcc:dl
ad27e1d5e48ca41245120c331cc88b50464813cevboxsync; @returns bool result: true if successfully exchanged, false if not.
fed88021ac57fb52130ac80953954919864d7e66vboxsyncBEGINPROC_EXPORTED ASMAtomicCmpXchgU8
fed88021ac57fb52130ac80953954919864d7e66vboxsync%ifdef RT_ARCH_AMD64
fed88021ac57fb52130ac80953954919864d7e66vboxsync %ifdef ASM_CALL64_MSC
0947602430c9ce096179270827ec44bf1cc532e6vboxsync mov al, r8b
fed88021ac57fb52130ac80953954919864d7e66vboxsync lock cmpxchg [rcx], dl
fed88021ac57fb52130ac80953954919864d7e66vboxsync lock cmpxchg [rdi], sil
fed88021ac57fb52130ac80953954919864d7e66vboxsync mov ecx, [esp + 04h]
fed88021ac57fb52130ac80953954919864d7e66vboxsync mov dl, [esp + 08h]
fed88021ac57fb52130ac80953954919864d7e66vboxsync mov al, [esp + 0ch]
fed88021ac57fb52130ac80953954919864d7e66vboxsync lock cmpxchg [ecx], dl
fed88021ac57fb52130ac80953954919864d7e66vboxsync movzx eax, al
fed88021ac57fb52130ac80953954919864d7e66vboxsyncENDPROC ASMAtomicCmpXchgU8