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; $Id: U8D-x86-32.asm $
;; @file
; BS3Kit - 32-bit Watcom C/C++, 64-bit unsigned integer division.
;
;
; Copyright (C) 2007-2019 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.
;
%include "iprt/asmdefs.mac"
BEGINCODE
extern NAME(RTWatcomUInt64Div)
;;
; 64-bit unsigned integer division.
;
; @returns EDX:EAX Quotient, ECX:EBX Remainder.
; @param EDX:EAX Dividend.
; @param ECX:EBX Divisor
;
global __U8D
__U8D:
;
; Convert to a C __cdecl call - not doing this in assembly.
;
; Set up a frame, allocating 16 bytes for the result buffer.
push ebp
mov ebp, esp
sub esp, 10h
; Pointer to the return buffer.
push esp
; The divisor.
push ecx
push ebx
; The dividend.
push edx
push eax
call NAME(RTWatcomUInt64Div)
; Load the result.
mov ecx, [ebp - 10h + 12]
mov ebx, [ebp - 10h + 8]
mov edx, [ebp - 10h + 4]
mov eax, [ebp - 10h]
leave
ret
|
