1 /* $NetBSD: trap.h,v 1.4 1995/02/13 00:43:32 ragge Exp $ */ 2 3 /*- 4 * Copyright (c) 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * William Jolitz. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)trap.h 5.4 (Berkeley) 5/9/91 39 */ 40 41 /* 42 * Trap type values 43 * also known in trap.c for name strings 44 */ 45 46 #define T_RESADFLT 0 /* reserved addressing */ 47 #define T_PRIVINFLT 1 /* privileged instruction */ 48 #define T_RESOPFLT 2 /* reserved operand */ 49 #define T_BPTFLT 3 /* breakpoint instruction */ 50 #define T_SYSCALL 5 /* system call (kcall) */ 51 #define T_ARITHFLT 6 /* arithmetic trap */ 52 #define T_ASTFLT 7 /* system forced exception */ 53 #define T_PTELEN 8 /* Page table length exceeded */ 54 #define T_TRANSFLT 9 /* translation fault */ 55 /* #define T_TRCTRAP 10 /* trace trap */ 56 /* #define T_COMPAT 11 /* compatibility mode fault on VAX */ 57 #define T_ACCFLT 12 /* Access violation fault */ 58 /* #define T_TABLEFLT 13 /* page table fault */ 59 /* #define T_ALIGNFLT 14 /* alignment fault */ 60 /* #define T_KSPNOTVAL 15 /* kernel stack pointer not valid */ 61 /* #define T_BUSERR 16 /* bus error */ 62 /* #define T_KDBTRAP 17 /* kernel debugger trap */ 63 64 /* #define T_DIVIDE 18 /* integer divide fault */ 65 /* #define T_NMI 19 /* non-maskable trap */ 66 /* #define T_OFLOW 20 /* overflow trap */ 67 /* #define T_BOUND 21 /* bound instruction fault */ 68 /* #define T_DNA 22 /* device not available fault */ 69 /* #define T_DOUBLEFLT 23 /* double fault */ 70 /* #define T_FPOPFLT 24 /* fp coprocessor operand fetch fault */ 71 /* #define T_TSSFLT 25 /* invalid tss fault */ 72 /* #define T_SEGNPFLT 26 /* segment not present fault */ 73 /* #define T_STKFLT 27 /* stack fault */ 74 /* #define T_RESERVED 28 /* reserved fault base */ 75 76 /* These gets ORed with the word for page handling routines */ 77 #define T_WRITE 0x80 78 #define T_PTEFETCH 0x40 79 80 /* Trap's coming from user mode */ 81 #define T_USER 0x100 82 83 #ifndef ASSEMBLER 84 /* If we want to alter USP in some syscall, we do it with mtpr */ 85 struct trapframe { 86 int fp; /* Stack frame pointer */ 87 int ap; /* Argument pointer on user stack */ 88 int r0; /* General registers saved upon trap/syscall */ 89 int r1; 90 int r2; 91 int r3; 92 int r4; 93 int r5; 94 int trap; /* Type of trap */ 95 u_int code; /* Trap specific code */ 96 u_int pc; /* User pc */ 97 u_int psl; /* User psl */ 98 }; 99 #endif /* ASSEMBLER */ 100