/* * 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 */ #include #include #include #include "arch/x86/regs/int.hh" #include "arch/x86/regs/misc.hh" #include "arch/x86/pagetable_walker.hh" #include "arch/x86/process.hh" #include "arch/x86/remote_gdb.hh" #include "arch/vtophys.hh" #include "base/remote_gdb.hh" #include "base/socket.hh" #include "base/trace.hh" #include "cpu/base.hh" #include "cpu/thread_context.hh" #include "mem/page_table.hh" #include "sim/full_system.hh" using namespace std; using namespace X86ISA; RemoteGDB::RemoteGDB(System *_system, ThreadContext *c) : BaseRemoteGDB(_system, c, GDB_REG_BYTES) {} bool RemoteGDB::acc(Addr va, size_t len) { if (FullSystem) { Walker *walker = 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 { TlbEntry entry; return context->getProcessPtr()->pTable->lookup(va, entry); } } void RemoteGDB::getregs() { HandyM5Reg m5reg = context->readMiscRegNoEffect(MISCREG_M5_REG); if (m5reg.submode == SixtyFourBitMode) { gdbregs.regs64[GDB64_RAX] = context->readIntReg(INTREG_RAX); gdbregs.regs64[GDB64_RBX] = context->readIntReg(INTREG_RBX); gdbregs.regs64[GDB64_RCX] = context->readIntReg(INTREG_RCX); gdbregs.regs64[GDB64_RDX] = context->readIntReg(INTREG_RDX); gdbregs.regs64[GDB64_RSI] = context->readIntReg(INTREG_RSI); gdbregs.regs64[GDB64_RDI] = context->readIntReg(INTREG_RDI); gdbregs.regs64[GDB64_RBP] = context->readIntReg(INTREG_RBP); gdbregs.regs64[GDB64_RSP] = context->readIntReg(INTREG_RSP); gdbregs.regs64[GDB64_R8] = context->readIntReg(INTREG_R8); gdbregs.regs64[GDB64_R9] = context->readIntReg(INTREG_R9); gdbregs.regs64[GDB64_R10] = context->readIntReg(INTREG_R10); gdbregs.regs64[GDB64_R11] = context->readIntReg(INTREG_R11); gdbregs.regs64[GDB64_R12] = context->readIntReg(INTREG_R12); gdbregs.regs64[GDB64_R13] = context->readIntReg(INTREG_R13); gdbregs.regs64[GDB64_R14] = context->readIntReg(INTREG_R14); gdbregs.regs64[GDB64_R15] = context->readIntReg(INTREG_R15); gdbregs.regs64[GDB64_RIP] = context->pcState().pc(); gdbregs.regs32[GDB64_RFLAGS_32] = context->readMiscRegNoEffect(MISCREG_RFLAGS); gdbregs.regs32[GDB64_CS_32] = context->readMiscRegNoEffect(MISCREG_CS); gdbregs.regs32[GDB64_SS_32] = context->readMiscRegNoEffect(MISCREG_SS); gdbregs.regs32[GDB64_DS_32] = context->readMiscRegNoEffect(MISCREG_DS); gdbregs.regs32[GDB64_ES_32] = context->readMiscRegNoEffect(MISCREG_ES); gdbregs.regs32[GDB64_FS_32] = context->readMiscRegNoEffect(MISCREG_FS); gdbregs.regs32[GDB64_GS_32] = context->readMiscRegNoEffect(MISCREG_GS); } else { gdbregs.regs32[GDB32_EAX] = context->readIntReg(INTREG_RAX); gdbregs.regs32[GDB32_ECX] = context->readIntReg(INTREG_RCX); gdbregs.regs32[GDB32_EDX] = context->readIntReg(INTREG_RDX); gdbregs.regs32[GDB32_EBX] = context->readIntReg(INTREG_RBX); gdbregs.regs32[GDB32_ESP] = context->readIntReg(INTREG_RSP); gdbregs.regs32[GDB32_EBP] = context->readIntReg(INTREG_RBP); gdbregs.regs32[GDB32_ESI] = context->readIntReg(INTREG_RSI); gdbregs.regs32[GDB32_EDI] = context->readIntReg(INTREG_RDI); gdbregs.regs32[GDB32_EIP] = context->pcState().pc(); gdbregs.regs32[GDB32_EFLAGS] = context->readMiscRegNoEffect(MISCREG_RFLAGS); gdbregs.regs32[GDB32_CS] = context->readMiscRegNoEffect(MISCREG_CS); gdbregs.regs32[GDB32_CS] = context->readMiscRegNoEffect(MISCREG_SS); gdbregs.regs32[GDB32_CS] = context->readMiscRegNoEffect(MISCREG_DS); gdbregs.regs32[GDB32_CS] = context->readMiscRegNoEffect(MISCREG_ES); gdbregs.regs32[GDB32_CS] = context->readMiscRegNoEffect(MISCREG_FS); gdbregs.regs32[GDB32_CS] = context->readMiscRegNoEffect(MISCREG_GS); } } void RemoteGDB::setregs() { HandyM5Reg m5reg = context->readMiscRegNoEffect(MISCREG_M5_REG); if (m5reg.submode == SixtyFourBitMode) { context->setIntReg(INTREG_RAX, gdbregs.regs64[GDB64_RAX]); context->setIntReg(INTREG_RBX, gdbregs.regs64[GDB64_RBX]); context->setIntReg(INTREG_RCX, gdbregs.regs64[GDB64_RCX]); context->setIntReg(INTREG_RDX, gdbregs.regs64[GDB64_RDX]); context->setIntReg(INTREG_RSI, gdbregs.regs64[GDB64_RSI]); context->setIntReg(INTREG_RDI, gdbregs.regs64[GDB64_RDI]); context->setIntReg(INTREG_RBP, gdbregs.regs64[GDB64_RBP]); context->setIntReg(INTREG_RSP, gdbregs.regs64[GDB64_RSP]); context->setIntReg(INTREG_R8, gdbregs.regs64[GDB64_R8]); context->setIntReg(INTREG_R9, gdbregs.regs64[GDB64_R9]); context->setIntReg(INTREG_R10, gdbregs.regs64[GDB64_R10]); context->setIntReg(INTREG_R11, gdbregs.regs64[GDB64_R11]); context->setIntReg(INTREG_R12, gdbregs.regs64[GDB64_R12]); context->setIntReg(INTREG_R13, gdbregs.regs64[GDB64_R13]); context->setIntReg(INTREG_R14, gdbregs.regs64[GDB64_R14]); context->setIntReg(INTREG_R15, gdbregs.regs64[GDB64_R15]); context->pcState(gdbregs.regs64[GDB64_RIP]); context->setMiscReg(MISCREG_RFLAGS, gdbregs.regs32[GDB64_RFLAGS_32]); if (gdbregs.regs32[GDB64_CS_32] != context->readMiscRegNoEffect(MISCREG_CS)) { warn("Remote gdb: Ignoring update to CS.\n"); } if (gdbregs.regs32[GDB64_SS_32] != context->readMiscRegNoEffect(MISCREG_SS)) { warn("Remote gdb: Ignoring update to SS.\n"); } if (gdbregs.regs32[GDB64_DS_32] != context->readMiscRegNoEffect(MISCREG_DS)) { warn("Remote gdb: Ignoring update to DS.\n"); } if (gdbregs.regs32[GDB64_ES_32] != context->readMiscRegNoEffect(MISCREG_ES)) { warn("Remote gdb: Ignoring update to ES.\n"); } if (gdbregs.regs32[GDB64_FS_32] != context->readMiscRegNoEffect(MISCREG_FS)) { warn("Remote gdb: Ignoring update to FS.\n"); } if (gdbregs.regs32[GDB64_GS_32] != context->readMiscRegNoEffect(MISCREG_GS)) { warn("Remote gdb: Ignoring update to GS.\n"); } } else { context->setIntReg(INTREG_RAX, gdbregs.regs32[GDB32_EAX]); context->setIntReg(INTREG_RCX, gdbregs.regs32[GDB32_ECX]); context->setIntReg(INTREG_RDX, gdbregs.regs32[GDB32_EDX]); context->setIntReg(INTREG_RBX, gdbregs.regs32[GDB32_EBX]); context->setIntReg(INTREG_RSP, gdbregs.regs32[GDB32_ESP]); context->setIntReg(INTREG_RBP, gdbregs.regs32[GDB32_EBP]); context->setIntReg(INTREG_RSI, gdbregs.regs32[GDB32_ESI]); context->setIntReg(INTREG_RDI, gdbregs.regs32[GDB32_EDI]); context->pcState(gdbregs.regs32[GDB32_EIP]); context->setMiscReg(MISCREG_RFLAGS, gdbregs.regs32[GDB32_EFLAGS]); if (gdbregs.regs32[GDB64_CS_32] != context->readMiscRegNoEffect(MISCREG_CS)) { warn("Remote gdb: Ignoring update to CS.\n"); } if (gdbregs.regs32[GDB32_SS] != context->readMiscRegNoEffect(MISCREG_SS)) { warn("Remote gdb: Ignoring update to SS.\n"); } if (gdbregs.regs32[GDB32_DS] != context->readMiscRegNoEffect(MISCREG_DS)) { warn("Remote gdb: Ignoring update to DS.\n"); } if (gdbregs.regs32[GDB32_ES] != context->readMiscRegNoEffect(MISCREG_ES)) { warn("Remote gdb: Ignoring update to ES.\n"); } if (gdbregs.regs32[GDB32_FS] != context->readMiscRegNoEffect(MISCREG_FS)) { warn("Remote gdb: Ignoring update to FS.\n"); } if (gdbregs.regs32[GDB32_GS] != context->readMiscRegNoEffect(MISCREG_GS)) { warn("Remote gdb: Ignoring update to GS.\n"); } } }