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/*
* Mach Operating System
* Copyright (c) 1991,1990,1989 Carnegie Mellon University.
* Copyright (c) 1994 The University of Utah and
* the Center for Software Science (CSS).
* All rights reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON, THE UNIVERSITY OF UTAH AND CSS ALLOW FREE USE OF
* THIS SOFTWARE IN ITS "AS IS" CONDITION, AND DISCLAIM ANY LIABILITY
* OF ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF
* THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
#ifndef _I386_MOSS_TRAP_H_
#define _I386_MOSS_TRAP_H_
#ifndef ASSEMBLER
/* This structure corresponds to the state of user registers
as saved upon kernel trap/interrupt entry.
As always, it is only a default implementation;
a well-optimized microkernel will probably want to override it
with something that allows better optimization. */
struct trap_state {
/* Saved segment registers */
unsigned int gs;
unsigned int fs;
unsigned int es;
unsigned int ds;
/* PUSHA register state frame */
unsigned int edi;
unsigned int esi;
unsigned int ebp;
unsigned int cr2; /* we save cr2 over esp for page faults */
unsigned int ebx;
unsigned int edx;
unsigned int ecx;
unsigned int eax;
unsigned int trapno;
unsigned int err;
/* Processor state frame */
unsigned int eip;
unsigned int cs;
unsigned int eflags;
unsigned int esp;
unsigned int ss;
/* Virtual 8086 segment registers */
unsigned int v86_es;
unsigned int v86_ds;
unsigned int v86_fs;
unsigned int v86_gs;
};
/* The actual trap_state frame pushed by the processor
varies in size depending on where the trap came from. */
#define TR_KSIZE ((int)&((struct trap_state*)0)->esp)
#define TR_USIZE ((int)&((struct trap_state*)0)->v86_es)
#define TR_V86SIZE sizeof(struct trap_state)
#else ASSEMBLER
#include <mach/machine/asm.h>
#define UNEXPECTED_TRAP \
movw %ss,%ax ;\
movw %ax,%ds ;\
movw %ax,%es ;\
movl %esp,%eax ;\
pushl %eax ;\
call EXT(trap_dump_die) ;\
#endif ASSEMBLER
#include <mach/machine/trap.h>
#endif _I386_MOSS_TRAP_H_
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