sys/arch/i386/include/frame.h

   1 /*      $NetBSD: frame.h,v 1.35 2012/02/19 21:06:11 rmind Exp $ */
   2
   3 /*-
   4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Charles M. Hannum.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 /*-
  33  * Copyright (c) 1990 The Regents of the University of California.
  34  * All rights reserved.
  35  *
  36  * This code is derived from software contributed to Berkeley by
  37  * William Jolitz.
  38  *
  39  * Redistribution and use in source and binary forms, with or without
  40  * modification, are permitted provided that the following conditions
  41  * are met:
  42  * 1. Redistributions of source code must retain the above copyright
  43  *    notice, this list of conditions and the following disclaimer.
  44  * 2. Redistributions in binary form must reproduce the above copyright
  45  *    notice, this list of conditions and the following disclaimer in the
  46  *    documentation and/or other materials provided with the distribution.
  47  * 3. Neither the name of the University nor the names of its contributors
  48  *    may be used to endorse or promote products derived from this software
  49  *    without specific prior written permission.
  50  *
  51  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  52  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  53  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  54  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  55  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  56  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  57  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  58  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  59  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  60  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  61  * SUCH DAMAGE.
  62  *
  63  *      @(#)frame.h     5.2 (Berkeley) 1/18/91
  64  */
  65
  66 #ifndef _I386_FRAME_H_
  67 #define _I386_FRAME_H_
  68
  69 #include <sys/signal.h>
  70
  71 /*
  72  * System stack frames.
  73  */
  74
  75 /*
  76  * Exception/Trap Stack Frame
  77  */
  78 struct trapframe {
  79         uint16_t        tf_gs;
  80         uint16_t        tf_gs_pad;
  81         uint16_t        tf_fs;
  82         uint16_t        tf_fs_pad;
  83         uint16_t        tf_es;
  84         uint16_t        tf_es_pad;
  85         uint16_t        tf_ds;
  86         uint16_t        tf_ds_pad;
  87         int     tf_edi;
  88         int     tf_esi;
  89         int     tf_ebp;
  90         int     tf_ebx;
  91         int     tf_edx;
  92         int     tf_ecx;
  93         int     tf_eax;
  94         int     tf_trapno;
  95         /* below portion defined in 386 hardware */
  96         int     tf_err;
  97         int     tf_eip;
  98         int     tf_cs;
  99         int     tf_eflags;
 100         /* below used when transitting rings (e.g. user to kernel) */
 101         int     tf_esp;
 102         int     tf_ss;
 103         /* below used when switching out of VM86 mode */
 104         int     tf_vm86_es;
 105         int     tf_vm86_ds;
 106         int     tf_vm86_fs;
 107         int     tf_vm86_gs;
 108 };
 109
 110 /*
 111  * Interrupt stack frame
 112  */
 113 struct intrframe {
 114         int     if_ppl;
 115         int     if_gs;
 116         int     if_fs;
 117         int     if_es;
 118         int     if_ds;
 119         int     if_edi;
 120         int     if_esi;
 121         int     if_ebp;
 122         int     if_ebx;
 123         int     if_edx;
 124         int     if_ecx;
 125         int     if_eax;
 126         uint32_t __if_trapno;   /* for compat with trap frame - trapno */
 127         uint32_t __if_err;      /* for compat with trap frame - err */
 128         /* below portion defined in 386 hardware */
 129         int     if_eip;
 130         int     if_cs;
 131         int     if_eflags;
 132         /* below only when transitting rings (e.g. user to kernel) */
 133         int     if_esp;
 134         int     if_ss;
 135 };
 136
 137 /*
 138  * Stack frame inside cpu_switchto()
 139  */
 140 struct switchframe {
 141         int     sf_edi;
 142         int     sf_esi;
 143         int     sf_ebx;
 144         int     sf_eip;
 145 };
 146
 147 #if defined(_KERNEL) || defined(__minix)
 148 /*
 149  * Old-style signal frame
 150  */
 151 struct sigframe_sigcontext {
 152 #if defined(__minix)
 153         /* ret addr + stackframe for handler */
 154         int     sf_ra_sigreturn;        /* first return to sigreturn */
 155 #else
 156         int     sf_ra;                  /* return address for handler */
 157 #endif /* defined(__minix) */
 158         int     sf_signum;              /* "signum" argument for handler */
 159         int     sf_code;                /* "code" argument for handler */
 160         struct  sigcontext *sf_scp;     /* "scp" argument for handler */
 161 #if defined(__minix)
 162         /* ret addr + stackframe for sigreturn */
 163         uint32_t sf_fp;                 /* saved FP */
 164         int     sf_ra;                  /* actual return address for handler */
 165         struct  sigcontext *sf_scpcopy; /* minix scp copy */
 166 #endif /* defined(__minix) */
 167         struct  sigcontext sf_sc;       /* actual saved context */
 168 };
 169 #endif
 170
 171 /*
 172  * New-style signal frame
 173  */
 174 struct sigframe_siginfo {
 175         int             sf_ra;          /* return address for handler */
 176         int             sf_signum;      /* "signum" argument for handler */
 177         siginfo_t       *sf_sip;        /* "sip" argument for handler */
 178         ucontext_t      *sf_ucp;        /* "ucp" argument for handler */
 179         siginfo_t       sf_si;          /* actual saved siginfo */
 180         ucontext_t      sf_uc;          /* actual saved ucontext */
 181 };
 182
 183 #ifdef _KERNEL
 184 void *getframe(struct lwp *, int, int *);
 185 void buildcontext(struct lwp *, int, void *, void *);
 186 void sendsig_sigcontext(const ksiginfo_t *, const sigset_t *);
 187 #endif
 188
 189 #endif  /* _I386_FRAME_H_ */