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/* $OpenBSD: fpu_system.h,v 1.1 1996/08/27 10:32:49 downsj Exp $ */
/*
* fpu_system.h
*
*
* Copyright (C) 1992,1993,1994
* W. Metzenthen, 22 Parker St, Ormond, Vic 3163,
* Australia. E-mail billm@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, FreeBSD and NetBSD operating systems. 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.
*
*
* The purpose of this copyright, based upon the Berkeley copyright, is to
* ensure that the covered software remains freely available to everyone.
*
* The software (with necessary differences) is also available, but under
* the terms of the GNU copyleft, for the Linux operating system and for
* the djgpp ms-dos extender.
*
* W. Metzenthen June 1994.
*
*
* $FreeBSD: fpu_system.h,v 1.4 1995/05/30 07:57:51 rgrimes Exp $
*
*/
#ifndef _FPU_SYSTEM_H
#define _FPU_SYSTEM_H
/* system dependent definitions */
/*
#include <linux/sched.h>
#include <linux/kernel.h>
*/
#if defined(__FreeBSD__)
#define I387 (*(union i387_union *)&(((struct pcb *)curproc->p_addr)->pcb_savefpu))
#else
#define I387 (*(union i387_union *)&(((struct pcb *)curproc->p_addr)->pcb_savefpu.gplemu))
#endif
#define FPU_info (I387.soft.frame)
#define FPU_CS (*(unsigned short *) &(FPU_info->tf_cs))
#define FPU_DS (*(unsigned short *) &(FPU_info->tf_ds))
#define FPU_EAX (FPU_info->tf_eax)
#define FPU_EFLAGS (FPU_info->tf_eflags)
#define FPU_EIP (FPU_info->tf_eip)
/*#define FPU_ORIG_EIP (FPU_info->___orig_eip) */
/*#define FPU_ORIG_EIP (FPU_info->tf_isp)*/
#define FPU_ORIG_EIP (I387.soft.orig_eip)
#define FPU_lookahead (I387.soft.lookahead)
#define FPU_entry_eip (I387.soft.entry_eip)
#define status_word (I387.soft.swd)
#define control_word (I387.soft.cwd)
#define regs (I387.soft.regs)
#define top (I387.soft.top)
#define ip_offset (I387.soft.fip)
#define cs_selector (I387.soft.fcs)
#define data_operand_offset (I387.soft.foo)
#define operand_selector (I387.soft.fos)
#endif
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