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; $Id: ASMAddFlags.asm $
;; @file
; IPRT - ASMSetFlags().
;
;
; Copyright (C) 2006-2020 Oracle Corporation
;
; This file is part of VirtualBox Open Source Edition (OSE), as
; available from http://www.virtualbox.org. This file is free software;
; you can redistribute it and/or modify it under the terms of the GNU
; General Public License (GPL) as published by the Free Software
; Foundation, in version 2 as it comes in the "COPYING" file of the
; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
;
; The contents of this file may alternatively be used under the terms
; of the Common Development and Distribution License Version 1.0
; (CDDL) only, as it comes in the "COPYING.CDDL" file of the
; VirtualBox OSE 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.
;
;*******************************************************************************
;* Header Files *
;*******************************************************************************
%include "iprt/asmdefs.mac"
BEGINCODE
;;
; @param rcx/rdi eflags to add
BEGINPROC_EXPORTED ASMAddFlags
%if ARCH_BITS == 64
pushfq
mov rax, [rsp]
%ifdef ASM_CALL64_GCC
or rdi, rax
mov [rsp], rdi
%else
or rcx, rax
mov [rsp], rcx
%endif
popfq
%elif ARCH_BITS == 32
mov ecx, [esp + 4]
pushfd
mov eax, [esp]
or ecx, eax
mov [esp], ecx
popfd
%elif ARCH_BITS == 16
push bp
mov bp, sp
pushf
pop ax
push word [bp + 2 + 2]
or [bp - 2], ax
popf
leave
%else
%error ARCH_BITS
%endif
ret
ENDPROC ASMAddFlags
|
