b40ce4165d
Note ALL MODULES MUST BE RECOMPILED make the kernel aware that there are smaller units of scheduling than the process. (but only allow one thread per process at this time). This is functionally equivalent to teh previousl -current except that there is a thread associated with each process. Sorry john! (your next MFC will be a doosie!) Reviewed by: peter@freebsd.org, dillon@freebsd.org X-MFC after: ha ha ha ha
98 lines
3.6 KiB
C
98 lines
3.6 KiB
C
/*
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* fpu_system.h
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*
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*
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* Copyright (C) 1992,1993,1994
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* W. Metzenthen, 22 Parker St, Ormond, Vic 3163,
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* Australia. E-mail billm@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, FreeBSD and NetBSD operating systems. Any other
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* use is not permitted 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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* The purpose of this copyright, based upon the Berkeley copyright, is to
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* ensure that the covered software remains freely available to everyone.
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*
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* The software (with necessary differences) is also available, but under
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* the terms of the GNU copyleft, for the Linux operating system and for
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* the djgpp ms-dos extender.
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*
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* W. Metzenthen June 1994.
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*
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*
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* $FreeBSD$
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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 *)&(curthread->td_pcb->pcb_save.sv_87))
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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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