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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_