kolibrios/programs/develop/open watcom/trunk/clib/cgsupp/lldiv386.asm
Sergey Semyonov (Serge) 836c97f0ac Clib string & memory functions
git-svn-id: svn://kolibrios.org@553 a494cfbc-eb01-0410-851d-a64ba20cac60
2007-06-26 00:54:22 +00:00

83 lines
3.0 KiB
NASM

;*****************************************************************************
;*
;* Open Watcom Project
;*
;* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
;*
;* ========================================================================
;*
;* This file contains Original Code and/or Modifications of Original
;* Code as defined in and that are subject to the Sybase Open Watcom
;* Public License version 1.0 (the 'License'). You may not use this file
;* except in compliance with the License. BY USING THIS FILE YOU AGREE TO
;* ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
;* provided with the Original Code and Modifications, and is also
;* available at www.sybase.com/developer/opensource.
;*
;* The Original Code and all software distributed under the License are
;* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
;* EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
;* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
;* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
;* NON-INFRINGEMENT. Please see the License for the specific language
;* governing rights and limitations under the License.
;*
;* ========================================================================
;*
;* Description: Signed 64-bit division for 386.
;*
;*****************************************************************************
;========================================================================
;== Name: LLDIV ==
;== Operation: Signed 8 byte divide ==
;== Inputs: EAX;EDX Dividend ==
;== ECX;EBX Divisor ==
;== SS:ESI pointer to result structure ==
;== Volatile: none ==
;========================================================================
include mdef.inc
include struct.inc
ifdef _PROFILE
include p5prof.inc
endif
modstart lldiv386
xref __I8D
; defpe imaxdiv
; xdefp "C",imaxdiv
defpe lldiv
xdefp "C",lldiv
ifdef _PROFILE
P5Prolog
endif
ifdef __STACK__
push EBX ; save EBX
mov EAX,08[ESP] ; get numerator
mov EDX,12[ESP]
mov EBX,16[ESP] ; get denominator
mov ECX,20[ESP]
endif
docall __I8D ; call long division routine
mov [ESI],EAX ; store quotient
mov 4[ESI],EDX
mov 8[ESI],EBX ; store remainder
mov 12[ESI],ECX
ifdef __STACK__
pop EBX ; restore EBX
endif
ifdef _PROFILE
P5Epilog
endif
ret ; return
endproc lldiv
; endproc imaxdiv
endmod
end