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/* $OpenBSD: trap.h,v 1.3 2001/07/06 05:14:30 smurph Exp $ */
/* $NetBSD: trap.h,v 1.1 1996/09/30 16:34:35 ws Exp $ */
/*
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
* Copyright (C) 1995, 1996 TooLs GmbH.
* All rights reserved.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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.
*/
#ifndef _MACHINE_TRAP_H_
#define _MACHINE_TRAP_H_
#define EXC_RSVD 0x0000 /* Reserved */
#define EXC_RST 0x0100 /* Reset */
#define EXC_MCHK 0x0200 /* Machine Check */
#define EXC_DSI 0x0300 /* Data Storage Interrupt */
#define EXC_ISI 0x0400 /* Instruction Storage Interrupt */
#define EXC_EXI 0x0500 /* External Interrupt */
#define EXC_ALI 0x0600 /* Alignment Interrupt */
#define EXC_PGM 0x0700 /* Program Interrupt */
#define EXC_FPU 0x0800 /* Floating-point Unavailable */
#define EXC_DECR 0x0900 /* Decrementer Interrupt */
#define EXC_SC 0x0c00 /* System Call */
#define EXC_TRC 0x0d00 /* Trace */
#define EXC_FPA 0x0e00 /* Floating-point Assist */
/* The following are only available on 604: */
#define EXC_PERF 0x0f00 /* Performance Monitoring */
#define EXC_BPT 0x1300 /* Instruction Breakpoint */
#define EXC_SMI 0x1400 /* System Managment Interrupt */
/* And these are only on the 603: */
#define EXC_IMISS 0x1000 /* Instruction translation miss */
#define EXC_DLMISS 0x1100 /* Data load translation miss */
#define EXC_DSMISS 0x1200 /* Data store translation miss */
#define EXC_LAST 0x2f00 /* Last possible exception vector */
#define EXC_AST 0x3000 /* Fake AST vector */
/* Trap was in user mode */
#define EXC_USER 0x10000
/*
* EXC_ALI sets bits in the DSISR and DAR to provide enough
* information to recover from the unaligned access without needing to
* parse the offending instruction. This includes certain bits of the
* opcode, and information about what registers are used. The opcode
* indicator values below come from Appendix F of Book III of "The
* PowerPC Architecture".
*/
#define EXC_ALI_OPCODE_INDICATOR(dsisr) ((dsisr >> 10) & 0x7f)
#define EXC_ALI_LFD 0x09
#define EXC_ALI_STFD 0x0b
#define EXC_ALI_DCBZ 0x5f
/* Macros to extract register information */
#define EXC_ALI_RST(dsisr) ((dsisr >> 5) & 0x1f) /* source or target */
#define EXC_ALI_RA(dsisr) (dsisr & 0x1f)
#endif /* _MACHINE_TRAP_H_ */
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