xref: /freebsd/sys/i386/include/trap.h (revision 8e537d168674d6b65869f73c20813001af875738)
1 /*-
2  * Copyright (c) 1990 The Regents of the University of California.
3  * All rights reserved.
4  *
5  * This code is derived from software contributed to Berkeley by
6  * William Jolitz.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  * 3. All advertising materials mentioning features or use of this software
17  *    must display the following acknowledgement:
18  *	This product includes software developed by the University of
19  *	California, Berkeley and its contributors.
20  * 4. Neither the name of the University nor the names of its contributors
21  *    may be used to endorse or promote products derived from this software
22  *    without specific prior written permission.
23  *
24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34  * SUCH DAMAGE.
35  *
36  *	from: @(#)trap.h	5.4 (Berkeley) 5/9/91
37  *	$Id: trap.h,v 1.4 1995/01/14 13:20:26 bde Exp $
38  */
39 
40 #ifndef _MACHINE_TRAP_H_
41 #define	_MACHINE_TRAP_H_
42 
43 /*
44  * Trap type values
45  * also known in trap.c for name strings
46  */
47 
48 #define	T_PRIVINFLT	1	/* privileged instruction */
49 #define	T_BPTFLT	3	/* breakpoint instruction */
50 #define	T_ARITHTRAP	6	/* arithmetic trap */
51 #define	T_ASTFLT	7	/* system forced exception */
52 #define	T_PROTFLT	9	/* protection fault */
53 #define	T_TRCTRAP	10	/* debug exception (sic) */
54 #define	T_PAGEFLT	12	/* page fault */
55 #define	T_ALIGNFLT	14	/* alignment fault */
56 
57 #define	T_DIVIDE	18	/* integer divide fault */
58 #define	T_NMI		19	/* non-maskable trap */
59 #define	T_OFLOW		20	/* overflow trap */
60 #define	T_BOUND		21	/* bound instruction fault */
61 #define	T_DNA		22	/* device not available fault */
62 #define	T_DOUBLEFLT	23	/* double fault */
63 #define	T_FPOPFLT	24	/* fp coprocessor operand fetch fault */
64 #define	T_TSSFLT	25	/* invalid tss fault */
65 #define	T_SEGNPFLT	26	/* segment not present fault */
66 #define	T_STKFLT	27	/* stack fault */
67 #define	T_MCHK		28	/* machine check trap */
68 #define	T_RESERVED	29	/* reserved (unknown) */
69 
70 /* XXX most of the following codes aren't used, but could be. */
71 
72 /* definitions for <sys/signal.h> */
73 #define	    ILL_RESAD_FAULT	T_RESADFLT
74 #define	    ILL_PRIVIN_FAULT	T_PRIVINFLT
75 #define	    ILL_RESOP_FAULT	T_RESOPFLT
76 #define	    ILL_ALIGN_FAULT	T_ALIGNFLT
77 #define	    ILL_FPOP_FAULT	T_FPOPFLT	/* coprocessor operand fault */
78 
79 /* codes for SIGFPE/ARITHTRAP */
80 #define	    FPE_INTOVF_TRAP	0x1	/* integer overflow */
81 #define	    FPE_INTDIV_TRAP	0x2	/* integer divide by zero */
82 #define	    FPE_FLTDIV_TRAP	0x3	/* floating/decimal divide by zero */
83 #define	    FPE_FLTOVF_TRAP	0x4	/* floating overflow */
84 #define	    FPE_FLTUND_TRAP	0x5	/* floating underflow */
85 #define	    FPE_FPU_NP_TRAP	0x6	/* floating point unit not present */
86 #define	    FPE_SUBRNG_TRAP	0x7	/* subrange out of bounds */
87 
88 /* codes for SIGBUS */
89 #define	    BUS_PAGE_FAULT	T_PAGEFLT	/* page fault protection base */
90 #define	    BUS_SEGNP_FAULT	T_SEGNPFLT	/* segment not present */
91 #define	    BUS_STK_FAULT	T_STKFLT	/* stack segment */
92 #define	    BUS_SEGM_FAULT	T_RESERVED	/* segment protection base */
93 
94 /* Trap's coming from user mode */
95 #define	T_USER	0x100
96 
97 #endif /* !_MACHINE_TRAP_H_ */
98