| 1 | ; $Id: bs3-wc32-I8D.asm 76553 2019-01-01 01:45:53Z vboxsync $
|
|---|
| 2 | ;; @file
|
|---|
| 3 | ; BS3Kit - 32-bit Watcom C/C++, 64-bit signed integer division.
|
|---|
| 4 | ;
|
|---|
| 5 |
|
|---|
| 6 | ;
|
|---|
| 7 | ; Copyright (C) 2007-2019 Oracle Corporation
|
|---|
| 8 | ;
|
|---|
| 9 | ; This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | ; available from http://www.virtualbox.org. This file is free software;
|
|---|
| 11 | ; you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 12 | ; General Public License (GPL) as published by the Free Software
|
|---|
| 13 | ; Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 14 | ; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 15 | ; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | ;
|
|---|
| 17 | ; The contents of this file may alternatively be used under the terms
|
|---|
| 18 | ; of the Common Development and Distribution License Version 1.0
|
|---|
| 19 | ; (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
|---|
| 20 | ; VirtualBox OSE distribution, in which case the provisions of the
|
|---|
| 21 | ; CDDL are applicable instead of those of the GPL.
|
|---|
| 22 | ;
|
|---|
| 23 | ; You may elect to license modified versions of this file under the
|
|---|
| 24 | ; terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 25 | ;
|
|---|
| 26 |
|
|---|
| 27 | %include "bs3kit-template-header.mac"
|
|---|
| 28 |
|
|---|
| 29 | BS3_EXTERN_CMN Bs3Int64Div
|
|---|
| 30 |
|
|---|
| 31 |
|
|---|
| 32 | ;;
|
|---|
| 33 | ; 64-bit signed integer division.
|
|---|
| 34 | ;
|
|---|
| 35 | ; @returns EDX:EAX Quotient, ECX:EBX Remainder.
|
|---|
| 36 | ; @param EDX:EAX Dividend.
|
|---|
| 37 | ; @param ECX:EBX Divisor
|
|---|
| 38 | ;
|
|---|
| 39 | global $??I8D
|
|---|
| 40 | $??I8D:
|
|---|
| 41 | ;
|
|---|
| 42 | ; Convert to a C __cdecl call - not doing this in assembly.
|
|---|
| 43 | ;
|
|---|
| 44 |
|
|---|
| 45 | ; Set up a frame, allocating 16 bytes for the result buffer.
|
|---|
| 46 | push ebp
|
|---|
| 47 | mov ebp, esp
|
|---|
| 48 | sub esp, 10h
|
|---|
| 49 |
|
|---|
| 50 | ; Pointer to the return buffer.
|
|---|
| 51 | push esp
|
|---|
| 52 |
|
|---|
| 53 | ; The dividend.
|
|---|
| 54 | push ecx
|
|---|
| 55 | push ebx
|
|---|
| 56 |
|
|---|
| 57 | ; The dividend.
|
|---|
| 58 | push edx
|
|---|
| 59 | push eax
|
|---|
| 60 |
|
|---|
| 61 | call Bs3Int64Div
|
|---|
| 62 |
|
|---|
| 63 | ; Load the result.
|
|---|
| 64 | mov ecx, [ebp - 10h + 12]
|
|---|
| 65 | mov ebx, [ebp - 10h + 8]
|
|---|
| 66 | mov edx, [ebp - 10h + 4]
|
|---|
| 67 | mov eax, [ebp - 10h]
|
|---|
| 68 |
|
|---|
| 69 | leave
|
|---|
| 70 | ret
|
|---|
| 71 |
|
|---|
