trap.h revision 1.3 1 1.3 ragge /* $NetBSD: trap.h,v 1.3 1994/11/25 19:09:01 ragge Exp $ */
2 1.2 cgd
3 1.1 ragge /*-
4 1.1 ragge * Copyright (c) 1990 The Regents of the University of California.
5 1.1 ragge * All rights reserved.
6 1.1 ragge *
7 1.1 ragge * This code is derived from software contributed to Berkeley by
8 1.1 ragge * William Jolitz.
9 1.1 ragge *
10 1.1 ragge * Redistribution and use in source and binary forms, with or without
11 1.1 ragge * modification, are permitted provided that the following conditions
12 1.1 ragge * are met:
13 1.1 ragge * 1. Redistributions of source code must retain the above copyright
14 1.1 ragge * notice, this list of conditions and the following disclaimer.
15 1.1 ragge * 2. Redistributions in binary form must reproduce the above copyright
16 1.1 ragge * notice, this list of conditions and the following disclaimer in the
17 1.1 ragge * documentation and/or other materials provided with the distribution.
18 1.1 ragge * 3. All advertising materials mentioning features or use of this software
19 1.1 ragge * must display the following acknowledgement:
20 1.1 ragge * This product includes software developed by the University of
21 1.1 ragge * California, Berkeley and its contributors.
22 1.1 ragge * 4. Neither the name of the University nor the names of its contributors
23 1.1 ragge * may be used to endorse or promote products derived from this software
24 1.1 ragge * without specific prior written permission.
25 1.1 ragge *
26 1.1 ragge * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 1.1 ragge * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 1.1 ragge * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 1.1 ragge * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 1.1 ragge * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 1.1 ragge * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 1.1 ragge * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 1.1 ragge * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 1.1 ragge * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 1.1 ragge * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 1.1 ragge * SUCH DAMAGE.
37 1.1 ragge *
38 1.2 cgd * @(#)trap.h 5.4 (Berkeley) 5/9/91
39 1.1 ragge */
40 1.1 ragge
41 1.1 ragge /*
42 1.1 ragge * Trap type values
43 1.1 ragge * also known in trap.c for name strings
44 1.1 ragge */
45 1.1 ragge
46 1.1 ragge #define T_RESADFLT 0 /* reserved addressing */
47 1.1 ragge #define T_PRIVINFLT 1 /* privileged instruction */
48 1.1 ragge #define T_RESOPFLT 2 /* reserved operand */
49 1.1 ragge #define T_BPTFLT 3 /* breakpoint instruction */
50 1.1 ragge #define T_SYSCALL 5 /* system call (kcall) */
51 1.3 ragge #define T_ARITHFLT 6 /* arithmetic trap */
52 1.1 ragge #define T_ASTFLT 7 /* system forced exception */
53 1.3 ragge #define T_ACCFLT 8 /* Access control violation fault */
54 1.3 ragge #define T_TRANSFLT 9 /* translation fault */
55 1.3 ragge
56 1.1 ragge #define T_TRCTRAP 10 /* trace trap */
57 1.3 ragge #define T_COMPAT 11 /* compatibility mode fault on VAX */
58 1.1 ragge #define T_PAGEFLT 12 /* page fault */
59 1.1 ragge #define T_TABLEFLT 13 /* page table fault */
60 1.1 ragge /* #define T_ALIGNFLT 14 /* alignment fault */
61 1.1 ragge /* #define T_KSPNOTVAL 15 /* kernel stack pointer not valid */
62 1.1 ragge /* #define T_BUSERR 16 /* bus error */
63 1.1 ragge #define T_KDBTRAP 17 /* kernel debugger trap */
64 1.1 ragge
65 1.1 ragge /* #define T_DIVIDE 18 /* integer divide fault */
66 1.1 ragge /* #define T_NMI 19 /* non-maskable trap */
67 1.1 ragge /* #define T_OFLOW 20 /* overflow trap */
68 1.1 ragge /* #define T_BOUND 21 /* bound instruction fault */
69 1.1 ragge /* #define T_DNA 22 /* device not available fault */
70 1.1 ragge /* #define T_DOUBLEFLT 23 /* double fault */
71 1.1 ragge /* #define T_FPOPFLT 24 /* fp coprocessor operand fetch fault */
72 1.1 ragge /* #define T_TSSFLT 25 /* invalid tss fault */
73 1.1 ragge /* #define T_SEGNPFLT 26 /* segment not present fault */
74 1.1 ragge /* #define T_STKFLT 27 /* stack fault */
75 1.1 ragge /* #define T_RESERVED 28 /* reserved fault base */
76 1.1 ragge
77 1.1 ragge /* definitions for <sys/signal.h> */
78 1.1 ragge #define ILL_RESAD_FAULT T_RESADFLT
79 1.1 ragge #define ILL_PRIVIN_FAULT T_PRIVINFLT
80 1.1 ragge #define ILL_RESOP_FAULT T_RESOPFLT
81 1.1 ragge #define ILL_ALIGN_FAULT T_ALIGNFLT
82 1.1 ragge #define ILL_FPOP_FAULT T_FPOPFLT /* coprocessor operand fault */
83 1.1 ragge
84 1.1 ragge /* codes for SIGFPE/ARITHTRAP */
85 1.1 ragge #define FPE_INTOVF_TRAP 0x1 /* integer overflow */
86 1.1 ragge #define FPE_INTDIV_TRAP 0x2 /* integer divide by zero */
87 1.1 ragge #define FPE_FLTDIV_TRAP 0x3 /* floating/decimal divide by zero */
88 1.1 ragge #define FPE_FLTOVF_TRAP 0x4 /* floating overflow */
89 1.1 ragge #define FPE_FLTUND_TRAP 0x5 /* floating underflow */
90 1.1 ragge #define FPE_FPU_NP_TRAP 0x6 /* floating point unit not present */
91 1.1 ragge #define FPE_SUBRNG_TRAP 0x7 /* subrange out of bounds */
92 1.1 ragge
93 1.1 ragge /* codes for SIGBUS */
94 1.1 ragge #define BUS_PAGE_FAULT T_PAGEFLT /* page fault protection base */
95 1.1 ragge #define BUS_SEGNP_FAULT T_SEGNPFLT /* segment not present */
96 1.1 ragge #define BUS_STK_FAULT T_STKFLT /* stack segment */
97 1.1 ragge #define BUS_SEGM_FAULT T_RESERVED /* segment protection base */
98 1.1 ragge
99 1.1 ragge /* Trap's coming from user mode */
100 1.3 ragge #define T_USER 0x100
101 1.3 ragge
102 1.3 ragge #ifndef ASSEMBLER
103 1.3 ragge /* If we want to alter USP in some syscall, we do it with mtpr */
104 1.3 ragge struct sysc_frame {
105 1.3 ragge int fp; /* Stack frame pointer */
106 1.3 ragge int ap; /* Argument pointer on user stack */
107 1.3 ragge int r0; /* General registers saved upon syscall */
108 1.3 ragge int r1; /* (shouldn't be necessary) */
109 1.3 ragge int r2;
110 1.3 ragge int r3;
111 1.3 ragge int r4;
112 1.3 ragge int r5;
113 1.3 ragge int type; /* System call number */
114 1.3 ragge int pc; /* User pc */
115 1.3 ragge int psl; /* User psl */
116 1.3 ragge };
117 1.3 ragge #endif /* ASSEMBLER */
118