1 /* $NetBSD: trap.h,v 1.3 1994/11/25 19:09:01 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_ACCFLT 8 /* Access control violation fault */ 54 #define T_TRANSFLT 9 /* translation fault */ 55 56 #define T_TRCTRAP 10 /* trace trap */ 57 #define T_COMPAT 11 /* compatibility mode fault on VAX */ 58 #define T_PAGEFLT 12 /* page fault */ 59 #define T_TABLEFLT 13 /* page table fault */ 60 /* #define T_ALIGNFLT 14 /* alignment fault */ 61 /* #define T_KSPNOTVAL 15 /* kernel stack pointer not valid */ 62 /* #define T_BUSERR 16 /* bus error */ 63 #define T_KDBTRAP 17 /* kernel debugger trap */ 64 65 /* #define T_DIVIDE 18 /* integer divide fault */ 66 /* #define T_NMI 19 /* non-maskable trap */ 67 /* #define T_OFLOW 20 /* overflow trap */ 68 /* #define T_BOUND 21 /* bound instruction fault */ 69 /* #define T_DNA 22 /* device not available fault */ 70 /* #define T_DOUBLEFLT 23 /* double fault */ 71 /* #define T_FPOPFLT 24 /* fp coprocessor operand fetch fault */ 72 /* #define T_TSSFLT 25 /* invalid tss fault */ 73 /* #define T_SEGNPFLT 26 /* segment not present fault */ 74 /* #define T_STKFLT 27 /* stack fault */ 75 /* #define T_RESERVED 28 /* reserved fault base */ 76 77 /* definitions for <sys/signal.h> */ 78 #define ILL_RESAD_FAULT T_RESADFLT 79 #define ILL_PRIVIN_FAULT T_PRIVINFLT 80 #define ILL_RESOP_FAULT T_RESOPFLT 81 #define ILL_ALIGN_FAULT T_ALIGNFLT 82 #define ILL_FPOP_FAULT T_FPOPFLT /* coprocessor operand fault */ 83 84 /* codes for SIGFPE/ARITHTRAP */ 85 #define FPE_INTOVF_TRAP 0x1 /* integer overflow */ 86 #define FPE_INTDIV_TRAP 0x2 /* integer divide by zero */ 87 #define FPE_FLTDIV_TRAP 0x3 /* floating/decimal divide by zero */ 88 #define FPE_FLTOVF_TRAP 0x4 /* floating overflow */ 89 #define FPE_FLTUND_TRAP 0x5 /* floating underflow */ 90 #define FPE_FPU_NP_TRAP 0x6 /* floating point unit not present */ 91 #define FPE_SUBRNG_TRAP 0x7 /* subrange out of bounds */ 92 93 /* codes for SIGBUS */ 94 #define BUS_PAGE_FAULT T_PAGEFLT /* page fault protection base */ 95 #define BUS_SEGNP_FAULT T_SEGNPFLT /* segment not present */ 96 #define BUS_STK_FAULT T_STKFLT /* stack segment */ 97 #define BUS_SEGM_FAULT T_RESERVED /* segment protection base */ 98 99 /* Trap's coming from user mode */ 100 #define T_USER 0x100 101 102 #ifndef ASSEMBLER 103 /* If we want to alter USP in some syscall, we do it with mtpr */ 104 struct sysc_frame { 105 int fp; /* Stack frame pointer */ 106 int ap; /* Argument pointer on user stack */ 107 int r0; /* General registers saved upon syscall */ 108 int r1; /* (shouldn't be necessary) */ 109 int r2; 110 int r3; 111 int r4; 112 int r5; 113 int type; /* System call number */ 114 int pc; /* User pc */ 115 int psl; /* User psl */ 116 }; 117 #endif /* ASSEMBLER */ 118