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/* $OpenBSD: trap.h,v 1.5 2003/06/02 23:27:54 millert Exp $ */
/* $NetBSD: trap.h,v 1.9 1996/05/16 15:57:04 abrown Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Lawrence Berkeley Laboratory.
*
* 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.
*
* @(#)trap.h 8.1 (Berkeley) 6/11/93
*/
/*
* Sun4m support by Aaron Brown, Harvard University.
* Changes Copyright (c) 1995 The President and Fellows of Harvard College.
* All rights reserved.
*/
#ifndef _MACHINE_TRAP_H
#define _MACHINE_TRAP_H
/*
* vectors 0x00..0x1f are common to all sparc implementations, while
* vectors 0x20..0x2f are selectively implemented by some v8 cpu's
* either to support new instructions or simplify fault decoding.
* For sanity, these defines should match the layout of the trap
* table, but some cases may be treated in common. The priorities
* listed are correct, but the v8 traps been inserted "between levels".
*/
/* trap vec (pri) description */
#define T_RESET 0x00 /* (1) not actually vectored; jumps to 0 */
#define T_TEXTFAULT 0x01 /* (2) address fault during instr fetch */
#define T_ILLINST 0x02 /* (3) illegal instruction */
#define T_PRIVINST 0x03 /* (4) privileged instruction */
#define T_FPDISABLED 0x04 /* (5) fp instr while fp disabled */
#define T_WINOF 0x05 /* (6) register window overflow */
#define T_WINUF 0x06 /* (7) register window underflow */
#define T_ALIGN 0x07 /* (8) address not properly aligned */
#define T_FPE 0x08 /* (9) floating point exception */
#define T_DATAFAULT 0x09 /* (10) address fault during data fetch */
#define T_TAGOF 0x0a /* (11) tag overflow */
/* 0x0b unused */
/* 0x0c unused */
/* 0x0d unused */
/* 0x0e unused */
/* 0x0f unused */
/* 0x10 unused */
#define T_L1INT 0x11 /* (27) level 1 interrupt */
#define T_L2INT 0x12 /* (26) level 2 interrupt */
#define T_L3INT 0x13 /* (25) level 3 interrupt */
#define T_L4INT 0x14 /* (24) level 4 interrupt */
#define T_L5INT 0x15 /* (23) level 5 interrupt */
#define T_L6INT 0x16 /* (22) level 6 interrupt */
#define T_L7INT 0x17 /* (21) level 7 interrupt */
#define T_L8INT 0x18 /* (20) level 8 interrupt */
#define T_L9INT 0x19 /* (19) level 9 interrupt */
#define T_L10INT 0x1a /* (18) level 10 interrupt */
#define T_L11INT 0x1b /* (17) level 11 interrupt */
#define T_L12INT 0x1c /* (16) level 12 interrupt */
#define T_L13INT 0x1d /* (15) level 13 interrupt */
#define T_L14INT 0x1e /* (14) level 14 interrupt */
#define T_L15INT 0x1f /* (13) level 15 interrupt */
#define T_RREGERROR 0x20 /* (?) r-register access error (v8?) */
#define T_TEXTERROR 0x21 /* (<2) error during instruction access (v8) */
/* 0x22 unused */
/* through 0x23 unused */
#define T_CPDISABLED 0x24 /* (5) coprocessor instr while disabled */
/* 0x25 unused */
/* through 0x27 unused */
#define T_CPEXCEPTION 0x28 /* (9) coprocessor exception */
#define T_DATAERROR 0x29 /* (<9) error during data access (v8) */
#define T_IDIV0 0x2a /* (<11) integer divide by zero (v8) */
#define T_STOREBUFFAULT 0x2b /* SuperSPARC: Store buffer copy-back fault */
/* 0x2c unused */
/* through 0x7f unused */
/* beginning of `user' vectors (from trap instructions) - all priority 12 */
#define T_SUN_SYSCALL 0x80 /* system call */
#define T_BREAKPOINT 0x81 /* breakpoint `instruction' */
#define T_DIV0 0x82 /* division routine was handed 0 */
#define T_FLUSHWIN 0x83 /* flush windows */
#define T_CLEANWIN 0x84 /* provide clean windows */
#define T_RANGECHECK 0x85 /* ? */
#define T_FIXALIGN 0x86 /* fix up unaligned accesses */
#define T_INTOF 0x87 /* integer overflow ? */
#define T_SVR4_SYSCALL 0x88 /* SVR4 system call */
#define T_BSD_SYSCALL 0x89 /* BSD system call */
#define T_KGDB_EXEC 0x8a /* for kernel gdb */
/* 0x8b..0xff are currently unallocated, except the following */
#define T_SVR4_GETCC 0xa0
#define T_SVR4_SETCC 0xa1
#define T_SVR4_GETPSR 0xa2
#define T_SVR4_SETPSR 0xa3
#define T_SVR4_GETHRTIME 0xa4
#define T_SVR4_GETHRVTIME 0xa5
#define T_SVR4_GETHRESTIME 0xa7
#ifdef _KERNEL /* pseudo traps for locore.s */
#define T_RWRET -1 /* need first user window for trap return */
#define T_AST -2 /* no-op, just needed reschedule or profile */
#endif
/* flags to system call (flags in %g1 along with syscall number) */
#define SYSCALL_G2RFLAG 0x400 /* on success, return to %g2 rather than npc */
#define SYSCALL_G7RFLAG 0x800 /* use %g7 as above (deprecated) */
/*
* `software trap' macros to keep people happy (sparc v8 manual says not
* to set the upper bits).
*/
#define ST_BREAKPOINT (T_BREAKPOINT & 0x7f)
#define ST_DIV0 (T_DIV0 & 0x7f)
#define ST_FLUSHWIN (T_FLUSHWIN & 0x7f)
#define ST_SYSCALL (T_SUN_SYSCALL & 0x7f)
#endif /* _MACHINE_TRAP_H_ */
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