sys/cpu/i386/include/frame.h

   1 /*-
   2  * Copyright (c) 1990 The Regents of the University of California.
   3  * All rights reserved.
   4  *
   5  * This code is derived from software contributed to Berkeley by
   6  * William Jolitz.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the University of
  19  *      California, Berkeley and its contributors.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  *      from: @(#)frame.h       5.2 (Berkeley) 1/18/91
  37  * $FreeBSD: src/sys/i386/include/frame.h,v 1.20 1999/09/29 15:06:22 marcel Exp $
  38  * $DragonFly: src/sys/cpu/i386/include/frame.h,v 1.9 2007/01/23 08:43:02 dillon Exp $
  39  */
  40
  41 #ifndef _CPU_FRAME_H_
  42 #define _CPU_FRAME_H_
  43
  44 /*
  45  * System stack frames.
  46  */
  47
  48 /*
  49  * Exception/Trap Stack Frame.  This frame must match or be embedded within
  50  * all other frame types, including signal context frames.
  51  */
  52 struct trapframe {
  53         int     tf_gs;
  54         int     tf_fs;
  55         int     tf_es;
  56         int     tf_ds;
  57         int     tf_edi;
  58         int     tf_esi;
  59         int     tf_ebp;
  60         int     tf_isp;
  61         int     tf_ebx;
  62         int     tf_edx;
  63         int     tf_ecx;
  64         int     tf_eax;
  65         int     tf_xflags;
  66         int     tf_trapno;
  67         /* below portion defined in 386 hardware */
  68         int     tf_err;
  69         int     tf_eip;
  70         int     tf_cs;
  71         int     tf_eflags;
  72         /* below only when crossing rings (e.g. user to kernel) */
  73         int     tf_esp;
  74         int     tf_ss;
  75 };
  76
  77 /*
  78  * This frame is postfixed with additinoal information for traps from
  79  * virtual-8086 mode but must otherwise match the trapframe.
  80  */
  81 struct trapframe_vm86 {
  82         int     tf_gs;
  83         int     tf_fs;
  84         int     tf_es;
  85         int     tf_ds;
  86         int     tf_edi;
  87         int     tf_esi;
  88         int     tf_ebp;
  89         int     tf_isp;
  90         int     tf_ebx;
  91         int     tf_edx;
  92         int     tf_ecx;
  93         int     tf_eax;
  94         int     tf_xflags;
  95         int     tf_trapno;
  96         /* below portion defined in 386 hardware */
  97         int     tf_err;
  98         int     tf_eip;
  99         int     tf_cs;
 100         int     tf_eflags;
 101         /* below only when crossing rings (e.g. user to kernel) */
 102         int     tf_esp;
 103         int     tf_ss;
 104         /* below only when switching out of VM86 mode */
 105         int     tf_vm86_es;
 106         int     tf_vm86_ds;
 107         int     tf_vm86_fs;
 108         int     tf_vm86_gs;
 109 };
 110
 111 /*
 112  * Interrupt stack frame.  This frame is prefixed with additional
 113  * information but must otherwise match the trapframe.
 114  */
 115 struct intrframe {
 116         int     if_vec;
 117         int     if_ppl;
 118         int     if_gs;
 119         int     if_fs;
 120         int     if_es;
 121         int     if_ds;
 122         int     if_edi;
 123         int     if_esi;
 124         int     if_ebp;
 125         int     if_isp;         /* unused/trap frame compat - isp */
 126         int     if_ebx;
 127         int     if_edx;
 128         int     if_ecx;
 129         int     if_eax;
 130         int     if_xflags;      /* trap frame compat - xflags (vkernel) */
 131         int     if_trapno;      /* unused/trap frame compat - trapno */
 132         int     if_err;         /* unused/trap frame compat - err */
 133         /* below portion defined in 386 hardware */
 134         int     if_eip;
 135         int     if_cs;
 136         int     if_eflags;
 137         /* below only when crossing rings (e.g. user to kernel) */
 138         int     if_esp;
 139         int     if_ss;
 140 };
 141
 142 int     kdb_trap (int, int, struct trapframe *);
 143 extern  int (*pmath_emulate) (struct trapframe *);
 144
 145 #define INTR_TO_TRAPFRAME(frame) ((struct trapframe *)&(frame)->if_gs)
 146
 147 #endif /* _CPU_FRAME_H_ */