1/* $NetBSD: kgdb_machdep.c,v 1.11 2005/12/24 22:45:35 perry Exp $ */ 2 3/*- 4 * Copyright (c) 2004 Marcel Moolenaar 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 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 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28/*- 29 * Copyright (c) 1997 The NetBSD Foundation, Inc. 30 * All rights reserved. 31 * 32 * This code is derived from software contributed to The NetBSD Foundation 33 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 34 * NASA Ames Research Center. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 46 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 47 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 48 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 49 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 50 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 51 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 52 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 53 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 54 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 55 * POSSIBILITY OF SUCH DAMAGE. 56 */ 57 58/* 59 * Copyright (c) 1996 Matthias Pfaller. 60 * All rights reserved. 61 * 62 * Redistribution and use in source and binary forms, with or without 63 * modification, are permitted provided that the following conditions 64 * are met: 65 * 1. Redistributions of source code must retain the above copyright 66 * notice, this list of conditions and the following disclaimer. 67 * 2. Redistributions in binary form must reproduce the above copyright 68 * notice, this list of conditions and the following disclaimer in the 69 * documentation and/or other materials provided with the distribution. 70 * 3. All advertising materials mentioning features or use of this software 71 * must display the following acknowledgement: 72 * This product includes software developed by Matthias Pfaller. 73 * 4. The name of the author may not be used to endorse or promote products 74 * derived from this software without specific prior written permission 75 * 76 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 77 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 78 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 79 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 80 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 81 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 82 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 83 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 84 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 85 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 86 * 87 * JNPR: gdb_machdep.c,v 1.1 2007/08/09 12:25:25 katta 88 * $FreeBSD$ 89 */ 90 91#include <sys/cdefs.h> 92 93#include <sys/param.h> 94#include <sys/systm.h> 95#include <sys/kdb.h> 96#include <sys/kernel.h> 97#include <sys/signal.h> 98#include <sys/pcpu.h> 99 100#include <machine/gdb_machdep.h> 101#include <machine/pcb.h> 102#include <machine/reg.h> 103#include <machine/trap.h> 104 105#include <gdb/gdb.h> 106 107void * 108gdb_cpu_getreg(int regnum, size_t *regsz) 109{ 110 111 *regsz = gdb_cpu_regsz(regnum); 112 if (kdb_thread == curthread) { 113 register_t *zero_ptr = &kdb_frame->zero; 114 return zero_ptr + regnum; 115 } 116 117 switch (regnum) { 118 /* 119 * S0..S7 120 */ 121 case 16: 122 case 17: 123 case 18: 124 case 19: 125 case 20: 126 case 21: 127 case 22: 128 case 23: 129 return (&kdb_thrctx->pcb_context[PCB_REG_S0 + regnum - 16]); 130 case 28: 131 return (&kdb_thrctx->pcb_context[PCB_REG_GP]); 132 case 29: 133 return (&kdb_thrctx->pcb_context[PCB_REG_SP]); 134 case 30: 135 return (&kdb_thrctx->pcb_context[PCB_REG_S8]); 136 case 31: 137 return (&kdb_thrctx->pcb_context[PCB_REG_RA]); 138 case 37: 139 return (&kdb_thrctx->pcb_context[PCB_REG_PC]); 140 } 141 return (NULL); 142} 143 144void 145gdb_cpu_setreg(int regnum, void *val) 146{ 147 switch (regnum) { 148 case GDB_REG_PC: 149 kdb_thrctx->pcb_context[10] = *(register_t *)val; 150 if (kdb_thread == curthread) 151 kdb_frame->pc = *(register_t *)val; 152 } 153} 154 155int 156gdb_cpu_signal(int entry, int code) 157{ 158 switch (entry) { 159 case T_TLB_MOD: 160 case T_TLB_MOD+T_USER: 161 case T_TLB_LD_MISS: 162 case T_TLB_ST_MISS: 163 case T_TLB_LD_MISS+T_USER: 164 case T_TLB_ST_MISS+T_USER: 165 case T_ADDR_ERR_LD: /* misaligned access */ 166 case T_ADDR_ERR_ST: /* misaligned access */ 167 case T_BUS_ERR_LD_ST: /* BERR asserted to CPU */ 168 case T_ADDR_ERR_LD+T_USER: /* misaligned or kseg access */ 169 case T_ADDR_ERR_ST+T_USER: /* misaligned or kseg access */ 170 case T_BUS_ERR_IFETCH+T_USER: /* BERR asserted to CPU */ 171 case T_BUS_ERR_LD_ST+T_USER: /* BERR asserted to CPU */ 172 return (SIGSEGV); 173 174 case T_BREAK: 175 case T_BREAK+T_USER: 176 return (SIGTRAP); 177 178 case T_RES_INST+T_USER: 179 case T_COP_UNUSABLE+T_USER: 180 return (SIGILL); 181 182 case T_FPE+T_USER: 183 case T_OVFLOW+T_USER: 184 return (SIGFPE); 185 186 default: 187 return (SIGEMT); 188 } 189} 190