1/* 2 * Copyright 2015 LabWare 3 * Copyright 2014 Google, Inc. 4 * Copyright (c) 2010 ARM Limited 5 * All rights reserved 6 * 7 * The license below extends only to copyright in the software and shall 8 * not be construed as granting a license to any other intellectual 9 * property including but not limited to intellectual property relating 10 * to a hardware implementation of the functionality of the software 11 * licensed hereunder. You may use the software subject to the license 12 * terms below provided that you ensure that this notice is replicated 13 * unmodified and in its entirety in all distributions of the software, 14 * modified or unmodified, in source code or in binary form. 15 * 16 * Copyright (c) 2002-2005 The Regents of The University of Michigan 17 * All rights reserved. 18 * 19 * Redistribution and use in source and binary forms, with or without 20 * modification, are permitted provided that the following conditions are 21 * met: redistributions of source code must retain the above copyright 22 * notice, this list of conditions and the following disclaimer; 23 * redistributions in binary form must reproduce the above copyright 24 * notice, this list of conditions and the following disclaimer in the 25 * documentation and/or other materials provided with the distribution; 26 * neither the name of the copyright holders nor the names of its 27 * contributors may be used to endorse or promote products derived from 28 * this software without specific prior written permission. 29 * 30 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 31 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 32 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 33 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 34 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 35 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 36 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 37 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 38 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 39 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 40 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 41 * 42 * Authors: Nathan Binkert 43 * William Wang 44 * Deyuan Guo 45 * Boris Shingarov 46 */ 47 48/* 49 * Copyright (c) 1990, 1993 The Regents of the University of California 50 * All rights reserved 51 * 52 * This software was developed by the Computer Systems Engineering group 53 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 54 * contributed to Berkeley. 55 * 56 * All advertising materials mentioning features or use of this software 57 * must display the following acknowledgement: 58 * This product includes software developed by the University of 59 * California, Lawrence Berkeley Laboratories. 60 * 61 * Redistribution and use in source and binary forms, with or without 62 * modification, are permitted provided that the following conditions 63 * are met: 64 * 1. Redistributions of source code must retain the above copyright 65 * notice, this list of conditions and the following disclaimer. 66 * 2. Redistributions in binary form must reproduce the above copyright 67 * notice, this list of conditions and the following disclaimer in the 68 * documentation and/or other materials provided with the distribution. 69 * 3. All advertising materials mentioning features or use of this software 70 * must display the following acknowledgement: 71 * This product includes software developed by the University of 72 * California, Berkeley and its contributors. 73 * 4. Neither the name of the University nor the names of its contributors 74 * may be used to endorse or promote products derived from this software 75 * without specific prior written permission. 76 * 77 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 78 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 79 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 80 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 81 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 82 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 83 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 84 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 85 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 86 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 87 * SUCH DAMAGE. 88 * 89 * @(#)kgdb_stub.c 8.4 (Berkeley) 1/12/94 90 */ 91 92/*- 93 * Copyright (c) 2001 The NetBSD Foundation, Inc. 94 * All rights reserved. 95 * 96 * This code is derived from software contributed to The NetBSD Foundation 97 * by Jason R. Thorpe. 98 * 99 * Redistribution and use in source and binary forms, with or without 100 * modification, are permitted provided that the following conditions 101 * are met: 102 * 1. Redistributions of source code must retain the above copyright 103 * notice, this list of conditions and the following disclaimer. 104 * 2. Redistributions in binary form must reproduce the above copyright 105 * notice, this list of conditions and the following disclaimer in the 106 * documentation and/or other materials provided with the distribution. 107 * 3. All advertising materials mentioning features or use of this software 108 * must display the following acknowledgement: 109 * This product includes software developed by the NetBSD 110 * Foundation, Inc. and its contributors. 111 * 4. Neither the name of The NetBSD Foundation nor the names of its 112 * contributors may be used to endorse or promote products derived 113 * from this software without specific prior written permission. 114 * 115 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 116 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 117 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 118 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 119 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 120 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 121 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 122 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 123 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 124 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 125 * POSSIBILITY OF SUCH DAMAGE. 126 */ 127 128/* 129 * $NetBSD: kgdb_stub.c,v 1.8 2001/07/07 22:58:00 wdk Exp $ 130 * 131 * Taken from NetBSD 132 * 133 * "Stub" to allow remote cpu to debug over a serial line using gdb. 134 */ 135 136#include "arch/mips/remote_gdb.hh" 137 138#include <sys/signal.h> 139#include <unistd.h> 140 141#include <string> 142 143#include "arch/mips/decoder.hh" 144#include "arch/mips/vtophys.hh" 145#include "cpu/thread_state.hh" 146#include "debug/GDBAcc.hh" 147#include "debug/GDBMisc.hh" 148#include "mem/page_table.hh" 149#include "sim/full_system.hh" 150 151using namespace std; 152using namespace MipsISA; 153 154RemoteGDB::RemoteGDB(System *_system, ThreadContext *tc, int _port) 155 : BaseRemoteGDB(_system, tc, _port), regCache(this) 156{ 157} 158 159/* 160 * Determine if the mapping at va..(va+len) is valid. 161 */ 162bool 163RemoteGDB::acc(Addr va, size_t len) 164{ 165 // Check to make sure the first byte is mapped into the processes address 166 // space. 167 panic_if(FullSystem, "acc not implemented for MIPS FS!"); 168 return context()->getProcessPtr()->pTable->lookup(va) != nullptr; 169} 170 171void 172RemoteGDB::MipsGdbRegCache::getRegs(ThreadContext *context) 173{ 174 DPRINTF(GDBAcc, "getregs in remotegdb \n"); 175 176 for (int i = 0; i < 32; i++) r.gpr[i] = context->readIntReg(i); 177 r.sr = context->readMiscRegNoEffect(MISCREG_STATUS); 178 r.lo = context->readIntReg(INTREG_LO); 179 r.hi = context->readIntReg(INTREG_HI); 180 r.badvaddr = context->readMiscRegNoEffect(MISCREG_BADVADDR); 181 r.cause = context->readMiscRegNoEffect(MISCREG_CAUSE); 182 r.pc = context->pcState().pc(); 183 for (int i = 0; i < 32; i++) r.fpr[i] = context->readFloatReg(i); 184 r.fsr = context->readFloatReg(FLOATREG_FCCR); 185 r.fir = context->readFloatReg(FLOATREG_FIR); 186} 187 188void 189RemoteGDB::MipsGdbRegCache::setRegs(ThreadContext *context) const 190{ 191 DPRINTF(GDBAcc, "setregs in remotegdb \n"); 192 193 for (int i = 1; i < 32; i++) context->setIntReg(i, r.gpr[i]); 194 context->setMiscRegNoEffect(MISCREG_STATUS, r.sr); 195 context->setIntReg(INTREG_LO, r.lo); 196 context->setIntReg(INTREG_HI, r.hi); 197 context->setMiscRegNoEffect(MISCREG_BADVADDR, r.badvaddr); 198 context->setMiscRegNoEffect(MISCREG_CAUSE, r.cause); 199 context->pcState(r.pc); 200 for (int i = 0; i < 32; i++) context->setFloatReg(i, r.fpr[i]); 201 context->setFloatReg(FLOATREG_FCCR, r.fsr); 202 context->setFloatReg(FLOATREG_FIR, r.fir); 203} 204 205BaseGdbRegCache* 206RemoteGDB::gdbRegs() 207{ 208 return ®Cache; 209} 210