1 | ; $Id: llrint.asm 62477 2016-07-22 18:27:37Z vboxsync $
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2 | ;; @file
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3 | ; IPRT - No-CRT llrint - AMD64 & X86.
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4 | ;
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5 |
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6 | ;
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7 | ; Copyright (C) 2006-2016 Oracle Corporation
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8 | ;
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9 | ; This file is part of VirtualBox Open Source Edition (OSE), as
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10 | ; available from http://www.virtualbox.org. This file is free software;
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11 | ; you can redistribute it and/or modify it under the terms of the GNU
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12 | ; General Public License (GPL) as published by the Free Software
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13 | ; Foundation, in version 2 as it comes in the "COPYING" file of the
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14 | ; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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15 | ; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | ;
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17 | ; The contents of this file may alternatively be used under the terms
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18 | ; of the Common Development and Distribution License Version 1.0
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19 | ; (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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20 | ; VirtualBox OSE distribution, in which case the provisions of the
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21 | ; CDDL are applicable instead of those of the GPL.
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22 | ;
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23 | ; You may elect to license modified versions of this file under the
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24 | ; terms and conditions of either the GPL or the CDDL or both.
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25 | ;
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26 |
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27 | %include "iprt/asmdefs.mac"
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28 |
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29 | BEGINCODE
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30 |
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31 | ;;
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32 | ; Round rd to the nearest integer value, rounding according to the current rounding direction.
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33 | ; @returns 32-bit: edx:eax 64-bit: rax
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34 | ; @param rd 32-bit: [esp + 4h] 64-bit: xmm0
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35 | BEGINPROC RT_NOCRT(llrint)
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36 | %ifdef RT_ARCH_AMD64
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37 | cvtsd2si rax, xmm0
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38 | %else
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39 | push ebp
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40 | mov ebp, esp
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41 | sub esp, 8h
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42 |
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43 | fld qword [ebp + 8h]
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44 | fistp qword [esp]
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45 | fwait
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46 | mov eax, [esp]
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47 | mov edx, [esp + 4]
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48 |
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49 | leave
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50 | %endif
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51 | ret
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52 | ENDPROC RT_NOCRT(llrint)
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53 |
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