.file "div_small.S" /* * div_small.S * * Divide a 64 bit integer by a 32 bit integer & return remainder. * * * Copyright (C) 1992, 1993 W. Metzenthen, 22 Parker St, Ormond, * Vic 3163, Australia. * E-mail apm233m@vaxc.cc.monash.edu.au * All rights reserved. * * This copyright notice covers the redistribution and use of the * FPU emulator developed by W. Metzenthen. It covers only its use * in the 386BSD operating system. Any other use is not permitted * under this copyright. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must include information specifying * that source code for the emulator is freely available and include * either: * a) an offer to provide the source code for a nominal distribution * fee, or * b) list at least two alternative methods whereby the source * can be obtained, e.g. a publically accessible bulletin board * and an anonymous ftp site from which the software can be * downloaded. * 3. All advertising materials specifically mentioning features or use of * this emulator must acknowledge that it was developed by W. Metzenthen. * 4. The name of W. Metzenthen may not be used to endorse or promote * products derived from this software without specific prior written * permission. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL * W. METZENTHEN BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * * $Id:$ * */ /*---------------------------------------------------------------------------+ | unsigned long div_small(unsigned long long *x, unsigned long y) | +---------------------------------------------------------------------------*/ #include "fpu_asm.h" .text .align 2,144 .globl _div_small _div_small: pushl %ebp movl %esp,%ebp pushl %esi movl PARAM1,%esi /* pointer to num */ movl PARAM2,%ecx /* The denominator */ movl 4(%esi),%eax /* Get the current num msw */ xorl %edx,%edx divl %ecx movl %eax,4(%esi) movl (%esi),%eax /* Get the num lsw */ divl %ecx movl %eax,(%esi) movl %edx,%eax /* Return the remainder in eax */ popl %esi leave ret