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 * 3. All advertising materials mentioning features or use of this software 45 * must display the following acknowledgement: 46 * This product includes software developed by the NetBSD 47 * Foundation, Inc. and its contributors. 48 * 4. Neither the name of The NetBSD Foundation nor the names of its 49 * contributors may be used to endorse or promote products derived 50 * from this software without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 53 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 54 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 55 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 56 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 57 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 58 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 59 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 60 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 61 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 62 * POSSIBILITY OF SUCH DAMAGE. 63 */ 64 65/* 66 * Copyright (c) 1996 Matthias Pfaller. 67 * All rights reserved. 68 * 69 * Redistribution and use in source and binary forms, with or without 70 * modification, are permitted provided that the following conditions 71 * are met: 72 * 1. Redistributions of source code must retain the above copyright 73 * notice, this list of conditions and the following disclaimer. 74 * 2. Redistributions in binary form must reproduce the above copyright 75 * notice, this list of conditions and the following disclaimer in the 76 * documentation and/or other materials provided with the distribution. 77 * 3. All advertising materials mentioning features or use of this software 78 * must display the following acknowledgement: 79 * This product includes software developed by Matthias Pfaller. 80 * 4. The name of the author may not be used to endorse or promote products 81 * derived from this software without specific prior written permission 82 * 83 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 84 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 85 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 86 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 87 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 88 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 89 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 90 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 91 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 92 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 93 * 94 * JNPR: gdb_machdep.c,v 1.1 2007/08/09 12:25:25 katta 95 * $FreeBSD$ 96 */ 97 98#include <sys/cdefs.h> 99 100#include <sys/param.h> 101#include <sys/systm.h> 102#include <sys/kdb.h> 103#include <sys/kernel.h> 104#include <sys/signal.h> 105#include <sys/pcpu.h> 106 107#include <machine/gdb_machdep.h> 108#include <machine/pcb.h> 109#include <machine/reg.h> 110#include <machine/trap.h> 111 112#include <gdb/gdb.h> 113 114void * 115gdb_cpu_getreg(int regnum, size_t *regsz) 116{ 117 118 *regsz = gdb_cpu_regsz(regnum); 119 if (kdb_thread == curthread) { 120 register_t *zero_ptr = &kdb_frame->zero; 121 return zero_ptr + regnum; 122 } 123 124 switch (regnum) { 125 /* 126 * S0..S7 127 */ 128 case 16: 129 case 17: 130 case 18: 131 case 19: 132 case 20: 133 case 21: 134 case 22: 135 case 23: 136 return (&kdb_thrctx->pcb_context[PCB_REG_S0 + regnum - 16]); 137 case 28: 138 return (&kdb_thrctx->pcb_context[PCB_REG_GP]); 139 case 29: 140 return (&kdb_thrctx->pcb_context[PCB_REG_SP]); 141 case 30: 142 return (&kdb_thrctx->pcb_context[PCB_REG_S8]); 143 case 31: 144 return (&kdb_thrctx->pcb_context[PCB_REG_RA]); 145 case 37: 146 return (&kdb_thrctx->pcb_context[PCB_REG_PC]); 147 } 148 return (NULL); 149} 150 151void 152gdb_cpu_setreg(int regnum, void *val) 153{ 154 switch (regnum) { 155 case GDB_REG_PC: 156 kdb_thrctx->pcb_context[10] = *(register_t *)val; 157 if (kdb_thread == curthread) 158 kdb_frame->pc = *(register_t *)val; 159 } 160} 161 162int 163gdb_cpu_signal(int entry, int code) 164{ 165 switch (entry) { 166 case T_TLB_MOD: 167 case T_TLB_MOD+T_USER: 168 case T_TLB_LD_MISS: 169 case T_TLB_ST_MISS: 170 case T_TLB_LD_MISS+T_USER: 171 case T_TLB_ST_MISS+T_USER: 172 case T_ADDR_ERR_LD: /* misaligned access */ 173 case T_ADDR_ERR_ST: /* misaligned access */ 174 case T_BUS_ERR_LD_ST: /* BERR asserted to CPU */ 175 case T_ADDR_ERR_LD+T_USER: /* misaligned or kseg access */ 176 case T_ADDR_ERR_ST+T_USER: /* misaligned or kseg access */ 177 case T_BUS_ERR_IFETCH+T_USER: /* BERR asserted to CPU */ 178 case T_BUS_ERR_LD_ST+T_USER: /* BERR asserted to CPU */ 179 return (SIGSEGV); 180 181 case T_BREAK: 182 case T_BREAK+T_USER: 183 return (SIGTRAP); 184 185 case T_RES_INST+T_USER: 186 case T_COP_UNUSABLE+T_USER: 187 return (SIGILL); 188 189 case T_FPE+T_USER: 190 case T_OVFLOW+T_USER: 191 return (SIGFPE); 192 193 default: 194 return (SIGEMT); 195 } 196} 197