/* * Copyright 2015 LabWare * Copyright 2014 Google, Inc. * Copyright (c) 2007 The Hewlett-Packard Development Company * All rights reserved. * * The license below extends only to copyright in the software and shall * not be construed as granting a license to any other intellectual * property including but not limited to intellectual property relating * to a hardware implementation of the functionality of the software * licensed hereunder. You may use the software subject to the license * terms below provided that you ensure that this notice is replicated * unmodified and in its entirety in all distributions of the software, * modified or unmodified, in source code or in binary form. * * 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: Gabe Black * Boris Shingarov */ #include "arch/x86/remote_gdb.hh" #include #include #include #include "arch/vtophys.hh" #include "arch/x86/pagetable_walker.hh" #include "arch/x86/process.hh" #include "arch/x86/regs/int.hh" #include "arch/x86/regs/misc.hh" #include "base/remote_gdb.hh" #include "base/socket.hh" #include "base/trace.hh" #include "cpu/base.hh" #include "cpu/thread_context.hh" #include "debug/GDBAcc.hh" #include "mem/page_table.hh" #include "sim/full_system.hh" using namespace std; using namespace X86ISA; RemoteGDB::RemoteGDB(System *_system, ThreadContext *c, int _port) : BaseRemoteGDB(_system, c, _port), regCache32(this), regCache64(this) {} bool RemoteGDB::acc(Addr va, size_t len) { if (FullSystem) { Walker *walker = dynamic_cast( context()->getDTBPtr())->getWalker(); unsigned logBytes; Fault fault = walker->startFunctional(context(), va, logBytes, BaseTLB::Read); if (fault != NoFault) return false; Addr endVa = va + len - 1; if ((va & ~mask(logBytes)) == (endVa & ~mask(logBytes))) return true; fault = walker->startFunctional(context(), endVa, logBytes, BaseTLB::Read); return fault == NoFault; } else { return context()->getProcessPtr()->pTable->lookup(va) != nullptr; } } BaseGdbRegCache* RemoteGDB::gdbRegs() { HandyM5Reg m5reg = context()->readMiscRegNoEffect(MISCREG_M5_REG); if (m5reg.submode == SixtyFourBitMode) return ®Cache64; else return ®Cache32; } void RemoteGDB::AMD64GdbRegCache::getRegs(ThreadContext *context) { DPRINTF(GDBAcc, "getRegs in remotegdb \n"); r.rax = context->readIntReg(INTREG_RAX); r.rbx = context->readIntReg(INTREG_RBX); r.rcx = context->readIntReg(INTREG_RCX); r.rdx = context->readIntReg(INTREG_RDX); r.rsi = context->readIntReg(INTREG_RSI); r.rdi = context->readIntReg(INTREG_RDI); r.rbp = context->readIntReg(INTREG_RBP); r.rsp = context->readIntReg(INTREG_RSP); r.r8 = context->readIntReg(INTREG_R8); r.r9 = context->readIntReg(INTREG_R9); r.r10 = context->readIntReg(INTREG_R10); r.r11 = context->readIntReg(INTREG_R11); r.r12 = context->readIntReg(INTREG_R12); r.r13 = context->readIntReg(INTREG_R13); r.r14 = context->readIntReg(INTREG_R14); r.r15 = context->readIntReg(INTREG_R15); r.rip = context->pcState().pc(); r.eflags = context->readMiscRegNoEffect(MISCREG_RFLAGS); r.cs = context->readMiscRegNoEffect(MISCREG_CS); r.ss = context->readMiscRegNoEffect(MISCREG_SS); r.ds = context->readMiscRegNoEffect(MISCREG_DS); r.es = context->readMiscRegNoEffect(MISCREG_ES); r.fs = context->readMiscRegNoEffect(MISCREG_FS); r.gs = context->readMiscRegNoEffect(MISCREG_GS); } void RemoteGDB::X86GdbRegCache::getRegs(ThreadContext *context) { DPRINTF(GDBAcc, "getRegs in remotegdb \n"); r.eax = context->readIntReg(INTREG_RAX); r.ecx = context->readIntReg(INTREG_RCX); r.edx = context->readIntReg(INTREG_RDX); r.ebx = context->readIntReg(INTREG_RBX); r.esp = context->readIntReg(INTREG_RSP); r.ebp = context->readIntReg(INTREG_RBP); r.esi = context->readIntReg(INTREG_RSI); r.edi = context->readIntReg(INTREG_RDI); r.eip = context->pcState().pc(); r.eflags = context->readMiscRegNoEffect(MISCREG_RFLAGS); r.cs = context->readMiscRegNoEffect(MISCREG_CS); r.ss = context->readMiscRegNoEffect(MISCREG_SS); r.ds = context->readMiscRegNoEffect(MISCREG_DS); r.es = context->readMiscRegNoEffect(MISCREG_ES); r.fs = context->readMiscRegNoEffect(MISCREG_FS); r.gs = context->readMiscRegNoEffect(MISCREG_GS); } void RemoteGDB::AMD64GdbRegCache::setRegs(ThreadContext *context) const { DPRINTF(GDBAcc, "setRegs in remotegdb \n"); context->setIntReg(INTREG_RAX, r.rax); context->setIntReg(INTREG_RBX, r.rbx); context->setIntReg(INTREG_RCX, r.rcx); context->setIntReg(INTREG_RDX, r.rdx); context->setIntReg(INTREG_RSI, r.rsi); context->setIntReg(INTREG_RDI, r.rdi); context->setIntReg(INTREG_RBP, r.rbp); context->setIntReg(INTREG_RSP, r.rsp); context->setIntReg(INTREG_R8, r.r8); context->setIntReg(INTREG_R9, r.r9); context->setIntReg(INTREG_R10, r.r10); context->setIntReg(INTREG_R11, r.r11); context->setIntReg(INTREG_R12, r.r12); context->setIntReg(INTREG_R13, r.r13); context->setIntReg(INTREG_R14, r.r14); context->setIntReg(INTREG_R15, r.r15); context->pcState(r.rip); context->setMiscReg(MISCREG_RFLAGS, r.eflags); if (r.cs != context->readMiscRegNoEffect(MISCREG_CS)) warn("Remote gdb: Ignoring update to CS.\n"); if (r.ss != context->readMiscRegNoEffect(MISCREG_SS)) warn("Remote gdb: Ignoring update to SS.\n"); if (r.ds != context->readMiscRegNoEffect(MISCREG_DS)) warn("Remote gdb: Ignoring update to DS.\n"); if (r.es != context->readMiscRegNoEffect(MISCREG_ES)) warn("Remote gdb: Ignoring update to ES.\n"); if (r.fs != context->readMiscRegNoEffect(MISCREG_FS)) warn("Remote gdb: Ignoring update to FS.\n"); if (r.gs != context->readMiscRegNoEffect(MISCREG_GS)) warn("Remote gdb: Ignoring update to GS.\n"); } void RemoteGDB::X86GdbRegCache::setRegs(ThreadContext *context) const { DPRINTF(GDBAcc, "setRegs in remotegdb \n"); context->setIntReg(INTREG_RAX, r.eax); context->setIntReg(INTREG_RCX, r.ecx); context->setIntReg(INTREG_RDX, r.edx); context->setIntReg(INTREG_RBX, r.ebx); context->setIntReg(INTREG_RSP, r.esp); context->setIntReg(INTREG_RBP, r.ebp); context->setIntReg(INTREG_RSI, r.esi); context->setIntReg(INTREG_RDI, r.edi); context->pcState(r.eip); context->setMiscReg(MISCREG_RFLAGS, r.eflags); if (r.cs != context->readMiscRegNoEffect(MISCREG_CS)) warn("Remote gdb: Ignoring update to CS.\n"); if (r.ss != context->readMiscRegNoEffect(MISCREG_SS)) warn("Remote gdb: Ignoring update to SS.\n"); if (r.ds != context->readMiscRegNoEffect(MISCREG_DS)) warn("Remote gdb: Ignoring update to DS.\n"); if (r.es != context->readMiscRegNoEffect(MISCREG_ES)) warn("Remote gdb: Ignoring update to ES.\n"); if (r.fs != context->readMiscRegNoEffect(MISCREG_FS)) warn("Remote gdb: Ignoring update to FS.\n"); if (r.gs != context->readMiscRegNoEffect(MISCREG_GS)) warn("Remote gdb: Ignoring update to GS.\n"); }