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; $Id: ftol2-vcc.asm $
;; @file
; IPRT - Floating Point to Integer related Visual C++ support routines.
;
;
; Copyright (C) 2022-2023 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
;
%include "iprt/asmdefs.mac"
%include "iprt/x86.mac"
;;
; Convert st0 to integer returning it in eax, popping st0.
;
; @returns value in eax
; @param st0 The value to convet. Will be popped.
; @uses eax, st0, FSW.TOP
;
GLOBALNAME_RAW __ftol2_sse_excpt, function, RT_NOTHING
GLOBALNAME_RAW __ftol2_sse, function, RT_NOTHING ;; @todo kind of expect __ftol2_sse to take input in xmm0 and return in edx:eax.
BEGINPROC_RAW __ftoi2
push ebp
mov ebp, esp
sub esp, 8h
fisttp dword [esp]
mov eax, [esp]
leave
ret
ENDPROC_RAW __ftoi2
;;
; Convert st0 to integer returning it in edx:eax, popping st0.
;
; @returns value in edx:eax
; @param st0 The value to convet. Will be popped.
; @uses eax, edx, st0, FSW.TOP
;
BEGINPROC_RAW __ftol2
push ebp
mov ebp, esp
sub esp, 8h
and esp, 0fffffff8h ; proper alignment.
fisttp qword [esp]
mov eax, [esp]
mov edx, [esp + 4]
leave
ret
ENDPROC_RAW __ftol2
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