b3196e4b9f
This eliminates a lot of #ifdef SMP type code. Things like _curproc reside in a data page that is unique on each cpu, eliminating the expensive macros like: #define curproc (SMPcurproc[cpunumber()]) There are some unresolved bootstrap and address space sharing issues at present, but Steve is waiting on this for other work. There is still some strictly temporary code present that isn't exactly pretty. This is part of a larger change that has run into some bumps, this part is standalone so it should be safe. The temporary code goes away when the full idle cpu support is finished. Reviewed by: fsmp, dyson
88 lines
3.1 KiB
C
88 lines
3.1 KiB
C
/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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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 reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)pcb.h 5.10 (Berkeley) 5/12/91
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* $Id: pcb.h,v 1.22 1997/06/07 04:36:05 bde Exp $
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*/
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#ifndef _I386_PCB_H_
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#define _I386_PCB_H_
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/*
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* Intel 386 process control block
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*/
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#include <machine/tss.h>
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#include <machine/npx.h>
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struct pcb {
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int pcb_cr3;
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int pcb_edi;
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int pcb_esi;
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int pcb_ebp;
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int pcb_esp;
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int pcb_ebx;
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int pcb_eip;
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caddr_t pcb_ldt; /* per process (user) LDT */
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int pcb_ldt_len; /* number of LDT entries */
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struct save87 pcb_savefpu; /* floating point state for 287/387 */
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u_char pcb_flags;
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#define FP_SOFTFP 0x01 /* process using software fltng pnt emulator */
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caddr_t pcb_onfault; /* copyin/out fault recovery */
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u_long pcb_mpnest;
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int pcb_fs;
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int pcb_gs;
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u_long __pcb_spare[5]; /* adjust to avoid core dump size changes */
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#if 0 /* some day we may switch between procs that have their own i386tss */
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struct i386tss pcb_tss;
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u_char pcb_iomap[NPORT/sizeof(u_char)]; /* i/o port bitmap */
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#endif
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};
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/*
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* The pcb is augmented with machine-dependent additional data for
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* core dumps. For the i386: ???
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*/
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struct md_coredump {
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};
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#ifdef KERNEL
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extern struct pcb *curpcb; /* our current running pcb */
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void savectx __P((struct pcb*));
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#endif
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#endif /* _I386_PCB_H_ */
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