; $Id: ASMAtomicUoIncU32.asm 98103 2023-01-17 14:15:46Z vboxsync $
;; @file
; IPRT - ASMAtomicUoIncU32().
;

;
; Copyright (C) 2014-2023 Oracle and/or its affiliates.
;
; This file is part of VirtualBox base platform packages, as
; available from https://www.virtualbox.org.
;
; This program is free software; you can redistribute it and/or
; modify it under the terms of the GNU General Public License
; as published by the Free Software Foundation, in version 3 of the
; License.
;
; This program is distributed in the hope that it will be useful, but
; WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
; General Public License for more details.
;
; You should have received a copy of the GNU General Public License
; along with this program; if not, see <https://www.gnu.org/licenses>.
;
; The contents of this file may alternatively be used under the terms
; of the Common Development and Distribution License Version 1.0
; (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
; in the VirtualBox distribution, in which case the provisions of the
; CDDL are applicable instead of those of the GPL.
;
; You may elect to license modified versions of this file under the
; terms and conditions of either the GPL or the CDDL or both.
;
; SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
;

;*******************************************************************************
;* Header Files                                                                *
;*******************************************************************************
%include "iprt/asmdefs.mac"

BEGINCODE

;;
; Atomically increment an unsigned 32-bit value, unordered.
;
; @param    pu32     x86:esp+4   gcc:rdi  msc:rcx
;
; @returns  the new incremented value.
;
RT_BEGINPROC ASMAtomicUoIncU32
        mov     eax, 1
%ifdef RT_ARCH_AMD64
 %ifdef ASM_CALL64_MSC
        xadd    [rcx], eax
 %else
        xadd    [rdi], eax
 %endif
%elifdef RT_ARCH_X86
        mov     ecx, [esp + 04h]
        xadd    [ecx], eax
%endif
        inc     eax
        ret
ENDPROC ASMAtomicUoIncU32