/* * Copyright 2014 Google, Inc. * Copyright (c) 2002-2005 The Regents of The University of Michigan * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer; * redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution; * neither the name of the copyright holders nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * Authors: Nathan Binkert */ /* * Copyright (c) 1990, 1993 The Regents of the University of California * All rights reserved. * * This software was developed by the Computer Systems Engineering group * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and * contributed to Berkeley. * * All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Lawrence Berkeley Laboratories. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)kgdb_stub.c 8.4 (Berkeley) 1/12/94 */ /*- * Copyright (c) 2001 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * $NetBSD: kgdb_stub.c,v 1.8 2001/07/07 22:58:00 wdk Exp $ * * Taken from NetBSD * * "Stub" to allow remote cpu to debug over a serial line using gdb. */ #include "arch/alpha/remote_gdb.hh" #include #include #include #include "arch/alpha/decoder.hh" #include "arch/alpha/regredir.hh" #include "arch/alpha/utility.hh" #include "arch/alpha/vtophys.hh" #include "base/intmath.hh" #include "base/remote_gdb.hh" #include "base/socket.hh" #include "base/trace.hh" #include "cpu/static_inst.hh" #include "cpu/thread_context.hh" #include "debug/GDBAcc.hh" #include "debug/GDBMisc.hh" #include "mem/physical.hh" #include "mem/port.hh" #include "sim/full_system.hh" #include "sim/system.hh" using namespace std; using namespace AlphaISA; RemoteGDB::RemoteGDB(System *_system, ThreadContext *tc, int _port) : BaseRemoteGDB(_system, tc, _port) { warn_once("Breakpoints do not work in Alpha PAL mode.\n" " See PCEventQueue::doService() in cpu/pc_event.cc.\n"); } /* * Determine if the mapping at va..(va+len) is valid. */ bool RemoteGDB::acc(Addr va, size_t len) { if (!FullSystem) panic("acc function needs to be rewritten for SE mode\n"); Addr last_va; va = TruncPage(va); last_va = RoundPage(va + len); do { if (IsK0Seg(va)) { if (va < (K0SegBase + system()->memSize())) { DPRINTF(GDBAcc, "acc: Mapping is valid K0SEG <= " "%#x < K0SEG + size\n", va); return true; } else { DPRINTF(GDBAcc, "acc: Mapping invalid %#x " "> K0SEG + size\n", va); return false; } } /** * This code says that all accesses to palcode (instruction * and data) are valid since there isn't a va->pa mapping * because palcode is accessed physically. At some point this * should probably be cleaned up but there is no easy way to * do it. */ if (PcPAL(va) || va < 0x10000) return true; Addr ptbr = context()->readMiscRegNoEffect(IPR_PALtemp20); PageTableEntry pte = kernel_pte_lookup(context()->getPhysProxy(), ptbr, va); if (!pte.valid()) { DPRINTF(GDBAcc, "acc: %#x pte is invalid\n", va); return false; } va += PageBytes; } while (va < last_va); DPRINTF(GDBAcc, "acc: %#x mapping is valid\n", va); return true; } void RemoteGDB::AlphaGdbRegCache::getRegs(ThreadContext *context) { DPRINTF(GDBAcc, "getRegs in remotegdb \n"); r.pc = context->pcState().pc(); if (PcPAL(r.pc)) { for (int i = 0; i < 32; ++i) r.gpr[i] = context->readIntReg(reg_redir[i]); } else { for (int i = 0; i < 32; ++i) r.gpr[i] = context->readIntReg(i); } for (int i = 0; i < 32; ++i) #ifdef KGDB_FP_REGS r.fpr[i] = context->readFloatRegBits(i); #else r.fpr[i] = 0; #endif } void RemoteGDB::AlphaGdbRegCache::setRegs(ThreadContext *context) const { DPRINTF(GDBAcc, "setRegs in remotegdb \n"); if (PcPAL(r.pc)) { for (int i = 0; i < 32; ++i) { context->setIntReg(reg_redir[i], r.gpr[i]); } } else { for (int i = 0; i < 32; ++i) { context->setIntReg(i, r.gpr[i]); } } #ifdef KGDB_FP_REGS for (int i = 0; i < NumFloatArchRegs; ++i) { context->setFloatRegBits(i, gdbregs.regs64[i + KGDB_REG_F0]); } #endif context->pcState(r.pc); } BaseGdbRegCache* RemoteGDB::gdbRegs() { return new AlphaGdbRegCache(this); }