85 lines
3.2 KiB
C
85 lines
3.2 KiB
C
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/*
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* fpu_system.h
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*
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*
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* Copyright (C) 1992, 1993 W. Metzenthen, 22 Parker St, Ormond,
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* Vic 3163, Australia.
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* E-mail apm233m@vaxc.cc.monash.edu.au
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* All rights reserved.
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*
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* This copyright notice covers the redistribution and use of the
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* FPU emulator developed by W. Metzenthen. It covers only its use
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* in the 386BSD operating system. Any other use is not permitted
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* under this copyright.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must include information specifying
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* that source code for the emulator is freely available and include
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* either:
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* a) an offer to provide the source code for a nominal distribution
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* fee, or
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* b) list at least two alternative methods whereby the source
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* can be obtained, e.g. a publically accessible bulletin board
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* and an anonymous ftp site from which the software can be
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* downloaded.
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* 3. All advertising materials specifically mentioning features or use of
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* this emulator must acknowledge that it was developed by W. Metzenthen.
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* 4. The name of W. Metzenthen may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* W. METZENTHEN BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef _FPU_SYSTEM_H
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#define _FPU_SYSTEM_H
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/* system dependent definitions */
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/*
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#include <linux/sched.h>
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#include <linux/kernel.h>
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*/
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#define I387 (*(union i387_union *)&(((struct pcb *)curproc->p_addr)->pcb_savefpu))
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#define FPU_info (I387.soft.frame)
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#define FPU_CS (*(unsigned short *) &(FPU_info->tf_cs))
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#define FPU_DS (*(unsigned short *) &(FPU_info->tf_ds))
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#define FPU_EAX (FPU_info->tf_eax)
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#define FPU_EFLAGS (FPU_info->tf_eflags)
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#define FPU_EIP (FPU_info->tf_eip)
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/*#define FPU_ORIG_EIP (FPU_info->___orig_eip) */
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/*#define FPU_ORIG_EIP (FPU_info->tf_isp)*/
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#define FPU_ORIG_EIP (I387.soft.orig_eip)
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#define FPU_lookahead (I387.soft.lookahead)
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#define FPU_entry_eip (I387.soft.entry_eip)
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#define status_word (I387.soft.swd)
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#define control_word (I387.soft.cwd)
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#define regs (I387.soft.regs)
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#define top (I387.soft.top)
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#define ip_offset (I387.soft.fip)
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#define cs_selector (I387.soft.fcs)
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#define data_operand_offset (I387.soft.foo)
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#define operand_selector (I387.soft.fos)
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#endif
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