xref: /illumos-gate/usr/src/boot/sys/x86/include/trap.h (revision 199767f8)
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  * 4. Neither the name of the University nor the names of its contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  *
32  *	from: @(#)trap.h	5.4 (Berkeley) 5/9/91
33  * $FreeBSD$
34  */
35 
36 #ifndef _MACHINE_TRAP_H_
37 #define	_MACHINE_TRAP_H_
38 
39 /*
40  * Trap type values
41  * also known in trap.c for name strings
42  */
43 
44 #define	T_PRIVINFLT	1	/* privileged instruction */
45 #define	T_BPTFLT	3	/* breakpoint instruction */
46 #define	T_ARITHTRAP	6	/* arithmetic trap */
47 #define	T_PROTFLT	9	/* protection fault */
48 #define	T_TRCTRAP	10	/* debug exception (sic) */
49 #define	T_PAGEFLT	12	/* page fault */
50 #define	T_ALIGNFLT	14	/* alignment fault */
51 
52 #define	T_DIVIDE	18	/* integer divide fault */
53 #define	T_NMI		19	/* non-maskable trap */
54 #define	T_OFLOW		20	/* overflow trap */
55 #define	T_BOUND		21	/* bound instruction fault */
56 #define	T_DNA		22	/* device not available fault */
57 #define	T_DOUBLEFLT	23	/* double fault */
58 #define	T_FPOPFLT	24	/* fp coprocessor operand fetch fault */
59 #define	T_TSSFLT	25	/* invalid tss fault */
60 #define	T_SEGNPFLT	26	/* segment not present fault */
61 #define	T_STKFLT	27	/* stack fault */
62 #define	T_MCHK		28	/* machine check trap */
63 #define	T_XMMFLT	29	/* SIMD floating-point exception */
64 #define	T_RESERVED	30	/* reserved (unknown) */
65 #define	T_DTRACE_RET	32	/* DTrace pid return */
66 
67 /* XXX most of the following codes aren't used, but could be. */
68 
69 /* definitions for <sys/signal.h> */
70 #define	    ILL_RESAD_FAULT	T_RESADFLT
71 #define	    ILL_PRIVIN_FAULT	T_PRIVINFLT
72 #define	    ILL_RESOP_FAULT	T_RESOPFLT
73 #define	    ILL_ALIGN_FAULT	T_ALIGNFLT
74 #define	    ILL_FPOP_FAULT	T_FPOPFLT	/* coprocessor operand fault */
75 
76 /* old FreeBSD macros, deprecated */
77 #define	FPE_INTOVF_TRAP	0x1	/* integer overflow */
78 #define	FPE_INTDIV_TRAP	0x2	/* integer divide by zero */
79 #define	FPE_FLTDIV_TRAP	0x3	/* floating/decimal divide by zero */
80 #define	FPE_FLTOVF_TRAP	0x4	/* floating overflow */
81 #define	FPE_FLTUND_TRAP	0x5	/* floating underflow */
82 #define	FPE_FPU_NP_TRAP	0x6	/* floating point unit not present  */
83 #define	FPE_SUBRNG_TRAP	0x7	/* subrange out of bounds */
84 
85 /* codes for SIGBUS */
86 #define	    BUS_PAGE_FAULT	T_PAGEFLT	/* page fault protection base */
87 #define	    BUS_SEGNP_FAULT	T_SEGNPFLT	/* segment not present */
88 #define	    BUS_STK_FAULT	T_STKFLT	/* stack segment */
89 #define	    BUS_SEGM_FAULT	T_RESERVED	/* segment protection base */
90 
91 /* Trap's coming from user mode */
92 #define	T_USER	0x100
93 
94 #endif /* !_MACHINE_TRAP_H_ */
95