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/* $OpenBSD: frame.h,v 1.13 2018/06/15 17:58:41 bluhm Exp $ */
/* $NetBSD: frame.h,v 1.12 1995/10/11 04:20:08 mycroft Exp $ */
/*-
* Copyright (c) 1995 Charles M. Hannum. All rights reserved.
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)frame.h 5.2 (Berkeley) 1/18/91
*/
#ifndef _MACHINE_FRAME_H
#define _MACHINE_FRAME_H
#include <sys/signal.h>
/*
* System stack frames.
*/
/*
* Exception/Trap Stack Frame
*/
struct trapframe {
int tf_fs;
int tf_gs;
int tf_es;
int tf_ds;
int tf_edi;
int tf_esi;
int tf_err; /* not the hardware position */
int tf_ebx;
int tf_edx;
int tf_ecx;
int tf_eax;
int tf_trapno;
/* below portion defined in 386 hardware */
int tf_ebp; /* hardware puts err here, INTRENTRY() moves it up */
int tf_eip;
int tf_cs;
int tf_eflags;
/* below used when transitting rings (e.g. user to kernel) */
int tf_esp;
int tf_ss;
/* below used when switching out of VM86 mode */
int tf_vm86_es;
int tf_vm86_ds;
int tf_vm86_fs;
int tf_vm86_gs;
};
/*
* Interrupt stack frame
*/
struct intrframe {
int if_ppl;
int if_fs;
int if_gs;
int if_es;
int if_ds;
int if_edi;
int if_esi;
int :32; /* for compat with trap frame - err */
int if_ebx;
int if_edx;
int if_ecx;
int if_eax;
int :32; /* for compat with trap frame - trapno */
int if_ebp;
/* below portion defined in 386 hardware */
int if_eip;
int if_cs;
int if_eflags;
/* below only when transitting rings (e.g. user to kernel) */
int if_esp;
int if_ss;
};
/*
* iret stack frame
*/
struct iretframe {
int irf_trapno;
int irf_err;
int irf_eip;
int irf_cs;
int irf_eflags;
int irf_esp;
int irf_ss;
/* below used when switching back to VM86 mode */
int irf_vm86_es;
int irf_vm86_ds;
int irf_vm86_fs;
int irf_vm86_gs;
};
/*
* Trampoline stack frame
*/
struct trampframe {
int trf__deadbeef;
int trf__kern_esp;
int trf_fs;
int trf_eax;
int trf_ebp;
int trf_trapno;
int trf_err;
int trf_eip;
int trf_cs;
int trf_eflags;
int trf_esp;
int trf_ss;
/* below used when switching out of VM86 mode */
int trf_vm86_es;
int trf_vm86_ds;
int trf_vm86_fs;
int trf_vm86_gs;
};
/*
* Stack frame inside cpu_switch()
*/
struct switchframe {
int sf_edi;
int sf_esi;
int sf_ebx;
int sf_eip;
};
struct callframe {
struct callframe *f_frame;
int f_retaddr;
int f_arg0;
};
/*
* Signal frame
*/
struct sigframe {
int sf_signum;
siginfo_t *sf_sip;
struct sigcontext *sf_scp;
sig_t sf_handler;
struct sigcontext sf_sc;
siginfo_t sf_si;
};
#endif
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