5206bca10a
- %fs register is added to trapframe and saved/restored upon kernel entry/exit. - Per-cpu pages are no longer mapped at the same virtual address. - Each cpu now has a separate gdt selector table. A new segment selector is added to point to per-cpu pages, per-cpu global variables are now accessed through this new selector (%fs). The selectors in gdt table are rearranged for cache line optimization. - fask_vfork is now on as default for both UP and SMP. - Some aio code cleanup. Reviewed by: Alan Cox <alc@cs.rice.edu> John Dyson <dyson@iquest.net> Julian Elischer <julian@whistel.com> Bruce Evans <bde@zeta.org.au> David Greenman <dg@root.com>
176 lines
4.3 KiB
C
176 lines
4.3 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: @(#)frame.h 5.2 (Berkeley) 1/18/91
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* $Id: frame.h,v 1.15 1997/08/09 00:03:12 dyson Exp $
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*/
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#ifndef _MACHINE_FRAME_H_
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#define _MACHINE_FRAME_H_ 1
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#include <sys/signal.h>
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/*
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* System stack frames.
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*/
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/*
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* Exception/Trap Stack Frame
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*/
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struct trapframe {
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int tf_fs;
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int tf_es;
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int tf_ds;
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int tf_edi;
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int tf_esi;
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int tf_ebp;
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int tf_isp;
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int tf_ebx;
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int tf_edx;
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int tf_ecx;
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int tf_eax;
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int tf_trapno;
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/* below portion defined in 386 hardware */
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int tf_err;
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int tf_eip;
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int tf_cs;
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int tf_eflags;
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/* below only when crossing rings (e.g. user to kernel) */
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int tf_esp;
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int tf_ss;
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};
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/* Superset of trap frame, for traps from virtual-8086 mode */
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struct trapframe_vm86 {
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int tf_fs;
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int tf_es;
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int tf_ds;
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int tf_edi;
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int tf_esi;
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int tf_ebp;
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int tf_isp;
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int tf_ebx;
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int tf_edx;
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int tf_ecx;
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int tf_eax;
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int tf_trapno;
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/* below portion defined in 386 hardware */
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int tf_err;
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int tf_eip;
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int tf_cs;
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int tf_eflags;
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/* below only when crossing rings (e.g. user to kernel) */
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int tf_esp;
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int tf_ss;
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/* below only when switching out of VM86 mode */
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int tf_vm86_es;
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int tf_vm86_ds;
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int tf_vm86_fs;
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int tf_vm86_gs;
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};
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/* Interrupt stack frame */
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struct intrframe {
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int if_vec;
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int if_ppl;
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int if_fs;
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int if_es;
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int if_ds;
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int if_edi;
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int if_esi;
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int if_ebp;
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int :32;
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int if_ebx;
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int if_edx;
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int if_ecx;
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int if_eax;
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int :32; /* for compat with trap frame - trapno */
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int :32; /* for compat with trap frame - err */
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/* below portion defined in 386 hardware */
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int if_eip;
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int if_cs;
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int if_eflags;
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/* below only when crossing rings (e.g. user to kernel) */
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int if_esp;
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int if_ss;
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};
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/* frame of clock (same as interrupt frame) */
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struct clockframe {
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int cf_vec;
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int cf_ppl;
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int cf_fs;
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int cf_es;
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int cf_ds;
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int cf_edi;
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int cf_esi;
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int cf_ebp;
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int :32;
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int cf_ebx;
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int cf_edx;
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int cf_ecx;
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int cf_eax;
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int :32; /* for compat with trap frame - trapno */
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int :32; /* for compat with trap frame - err */
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/* below portion defined in 386 hardware */
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int cf_eip;
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int cf_cs;
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int cf_eflags;
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/* below only when crossing rings (e.g. user to kernel) */
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int cf_esp;
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int cf_ss;
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};
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/*
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* Signal frame
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*/
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struct sigframe {
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int sf_signum;
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int sf_code;
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struct sigcontext *sf_scp;
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char *sf_addr;
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sig_t sf_handler;
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struct sigcontext sf_sc;
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};
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int kdb_trap __P((int, int, struct trapframe *));
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extern int (*pmath_emulate) __P((struct trapframe *));
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#endif /* _MACHINE_FRAME_H_ */
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