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/* $OpenBSD: trap.h,v 1.14 2001/12/16 23:49:46 miod Exp $ */
/*
* Mach Operating System
* Copyright (c) 1992 Carnegie Mellon University
* 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 ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS 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.
*/
/*
* Trap codes
*/
#ifndef __MACHINE_TRAP_H__
#define __MACHINE_TRAP_H__
/*
* Trap type values
*/
#define T_RESADFLT 0 /* reserved addressing fault */
#define T_PRIVINFLT 1 /* privileged instruction fault */
#define T_RESOPFLT 2 /* reserved operand fault */
/* End of known constants */
#define T_INSTFLT 3 /* instruction access exception */
#define T_DATAFLT 4 /* data access exception */
#define T_MISALGNFLT 5 /* misaligned access exception */
#define T_ILLFLT 6 /* unimplemented opcode exception */
#define T_BNDFLT 7 /* bounds check violation exception */
#define T_ZERODIV 8 /* illegal divide exception */
#define T_OVFFLT 9 /* integer overflow exception */
#define T_ERRORFLT 10 /* error exception */
#define T_FPEPFLT 11 /* floating point precise exception */
#define T_FPEIFLT 12 /* floating point imprecise exception */
#define T_ASTFLT 13 /* software trap */
#if DDB
#define T_KDB_ENTRY 14 /* force entry to kernel debugger */
#define T_KDB_BREAK 15 /* break point hit */
#define T_KDB_TRACE 16 /* trace */
#endif /* DDB */
#define T_UNKNOWNFLT 17 /* unknown exception */
#define T_SIGTRAP 18 /* generate SIGTRAP */
#define T_SIGSYS 19 /* generate SIGSYS */
#define T_STEPBPT 20 /* special breakpoint for single step */
#define T_USERBPT 21 /* user set breakpoint (for debugger) */
#define T_SYSCALL 22 /* Syscall */
#define T_NON_MASK 23 /* MVME197 Non-Maskable Interrupt */
#if DDB
#define T_KDB_WATCH 24 /* watchpoint hit */
#endif /* DDB */
#define T_197_READ 25 /* MVME197 Data Read Miss (Software Table Searches) */
#define T_197_WRITE 26 /* MVME197 Data Write Miss (Software Table Searches) */
#define T_197_INST 27 /* MVME197 Inst ATC Miss (Software Table Searches) */
#define T_INT 28 /* interrupt exception */
#define T_USER 29 /* user mode fault */
#ifndef _LOCORE
void panictrap(int type, struct m88100_saved_state *frame);
void test_trap(struct m88100_saved_state *frame);
void error_fault(struct m88100_saved_state *frame);
void error_reset(struct m88100_saved_state *frame);
unsigned ss_get_value(struct proc *p, unsigned addr, int size);
int ss_put_value(struct proc *p, unsigned addr, unsigned value, int size);
unsigned ss_branch_taken(unsigned inst, unsigned pc,
unsigned (*func)(unsigned int, struct trapframe *),
struct trapframe *func_data); /* 'opaque' */
unsigned ss_getreg_val(unsigned regno, struct trapframe *tf);
int ss_inst_branch(unsigned ins);
int ss_inst_delayed(unsigned ins);
unsigned ss_next_instr_address(struct proc *p, unsigned pc, unsigned delay_slot);
int cpu_singlestep(register struct proc *p);
#if defined(MVME187) || defined(MVME188)
void syscall(register_t code, struct m88100_saved_state *tf);
void trap18x(unsigned type, struct m88100_saved_state *frame);
#endif /* defined(MVME187) || defined(MVME188) */
#ifdef MVME197
void m197_syscall(register_t code, struct m88100_saved_state *tf);
void trap197(unsigned type, struct m88100_saved_state *frame);
#endif /* MVME197 */
#endif /* _LOCORE */
#endif /* __MACHINE_TRAP_H__ */
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