/* * Copyright 2014 Google Inc. * Copyright (c) 2010, 2013 ARM Limited * 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. * * 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 * William Wang */ /* * 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 #include #include #include "arch/arm/decoder.hh" #include "arch/arm/pagetable.hh" #include "arch/arm/registers.hh" #include "arch/arm/remote_gdb.hh" #include "arch/arm/system.hh" #include "arch/arm/utility.hh" #include "arch/arm/vtophys.hh" #include "base/chunk_generator.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 "cpu/thread_state.hh" #include "debug/GDBAcc.hh" #include "debug/GDBMisc.hh" #include "mem/page_table.hh" #include "mem/physical.hh" #include "mem/port.hh" #include "sim/full_system.hh" #include "sim/system.hh" using namespace std; using namespace ArmISA; RemoteGDB::RemoteGDB(System *_system, ThreadContext *tc) : BaseRemoteGDB(_system, tc, GDB_REG_BYTES) { } /* * Determine if the mapping at va..(va+len) is valid. */ bool RemoteGDB::acc(Addr va, size_t len) { if (FullSystem) { for (ChunkGenerator gen(va, len, PageBytes); !gen.done(); gen.next()) { if (!virtvalid(context, gen.addr())) { DPRINTF(GDBAcc, "acc: %#x mapping is invalid\n", va); return false; } } DPRINTF(GDBAcc, "acc: %#x mapping is valid\n", va); return true; } else { TlbEntry entry; //Check to make sure the first byte is mapped into the processes address //space. if (context->getProcessPtr()->pTable->lookup(va, entry)) return true; return false; } } /* * Translate the kernel debugger register format into the GDB register * format. */ void RemoteGDB::getregs() { DPRINTF(GDBAcc, "getregs in remotegdb \n"); memset(gdbregs.regs, 0, gdbregs.bytes()); if (inAArch64(context)) { // AArch64 // x0-x31 for (int i = 0; i < 32; ++i) gdbregs.regs64[GDB64_X0 + i] = context->readIntReg(INTREG_X0 + i); // pc gdbregs.regs64[GDB64_PC] = context->pcState().pc(); // cpsr gdbregs.regs64[GDB64_CPSR] = context->readMiscRegNoEffect(MISCREG_CPSR); // v0-v31 for (int i = 0; i < 128; i += 4) { int gdboff = GDB64_V0_32 + i; gdbregs.regs32[gdboff + 0] = context->readFloatRegBits(i + 2); gdbregs.regs32[gdboff + 1] = context->readFloatRegBits(i + 3); gdbregs.regs32[gdboff + 2] = context->readFloatRegBits(i + 0); gdbregs.regs32[gdboff + 3] = context->readFloatRegBits(i + 1); } } else { // AArch32 // R0-R15 supervisor mode gdbregs.regs32[GDB32_R0 + 0] = context->readIntReg(INTREG_R0); gdbregs.regs32[GDB32_R0 + 1] = context->readIntReg(INTREG_R1); gdbregs.regs32[GDB32_R0 + 2] = context->readIntReg(INTREG_R2); gdbregs.regs32[GDB32_R0 + 3] = context->readIntReg(INTREG_R3); gdbregs.regs32[GDB32_R0 + 4] = context->readIntReg(INTREG_R4); gdbregs.regs32[GDB32_R0 + 5] = context->readIntReg(INTREG_R5); gdbregs.regs32[GDB32_R0 + 6] = context->readIntReg(INTREG_R6); gdbregs.regs32[GDB32_R0 + 7] = context->readIntReg(INTREG_R7); gdbregs.regs32[GDB32_R0 + 8] = context->readIntReg(INTREG_R8); gdbregs.regs32[GDB32_R0 + 9] = context->readIntReg(INTREG_R9); gdbregs.regs32[GDB32_R0 + 10] = context->readIntReg(INTREG_R10); gdbregs.regs32[GDB32_R0 + 11] = context->readIntReg(INTREG_R11); gdbregs.regs32[GDB32_R0 + 12] = context->readIntReg(INTREG_R12); gdbregs.regs32[GDB32_R0 + 13] = context->readIntReg(INTREG_SP); gdbregs.regs32[GDB32_R0 + 14] = context->readIntReg(INTREG_LR); gdbregs.regs32[GDB32_R0 + 15] = context->pcState().pc(); // CPSR gdbregs.regs32[GDB32_CPSR] = context->readMiscRegNoEffect(MISCREG_CPSR); // vfpv3/neon floating point registers (32 double or 64 float) for (int i = 0; i < NumFloatV7ArchRegs; ++i) gdbregs.regs32[GDB32_F0 + i] = context->readFloatRegBits(i); // FPSCR gdbregs.regs32[GDB32_FPSCR] = context->readMiscRegNoEffect(MISCREG_FPSCR); } } /* * Translate the GDB register format into the kernel debugger register * format. */ void RemoteGDB::setregs() { DPRINTF(GDBAcc, "setregs in remotegdb \n"); if (inAArch64(context)) { // AArch64 // x0-x31 for (int i = 0; i < 32; ++i) context->setIntReg(INTREG_X0 + i, gdbregs.regs64[GDB64_X0 + i]); // pc context->pcState(gdbregs.regs64[GDB64_PC]); // cpsr context->setMiscRegNoEffect(MISCREG_CPSR, gdbregs.regs64[GDB64_CPSR]); // v0-v31 for (int i = 0; i < 128; i += 4) { int gdboff = GDB64_V0_32 + i; context->setFloatRegBits(i + 2, gdbregs.regs32[gdboff + 0]); context->setFloatRegBits(i + 3, gdbregs.regs32[gdboff + 1]); context->setFloatRegBits(i + 0, gdbregs.regs32[gdboff + 2]); context->setFloatRegBits(i + 1, gdbregs.regs32[gdboff + 3]); } } else { // AArch32 // R0-R15 supervisor mode // arm registers are 32 bits wide, gdb registers are 64 bits wide // two arm registers are packed into one gdb register (little endian) context->setIntReg(INTREG_R0, gdbregs.regs32[GDB32_R0 + 0]); context->setIntReg(INTREG_R1, gdbregs.regs32[GDB32_R0 + 1]); context->setIntReg(INTREG_R2, gdbregs.regs32[GDB32_R0 + 2]); context->setIntReg(INTREG_R3, gdbregs.regs32[GDB32_R0 + 3]); context->setIntReg(INTREG_R4, gdbregs.regs32[GDB32_R0 + 4]); context->setIntReg(INTREG_R5, gdbregs.regs32[GDB32_R0 + 5]); context->setIntReg(INTREG_R6, gdbregs.regs32[GDB32_R0 + 6]); context->setIntReg(INTREG_R7, gdbregs.regs32[GDB32_R0 + 7]); context->setIntReg(INTREG_R8, gdbregs.regs32[GDB32_R0 + 8]); context->setIntReg(INTREG_R9, gdbregs.regs32[GDB32_R0 + 9]); context->setIntReg(INTREG_R10, gdbregs.regs32[GDB32_R0 + 10]); context->setIntReg(INTREG_R11, gdbregs.regs32[GDB32_R0 + 11]); context->setIntReg(INTREG_R12, gdbregs.regs32[GDB32_R0 + 12]); context->setIntReg(INTREG_SP, gdbregs.regs32[GDB32_R0 + 13]); context->setIntReg(INTREG_LR, gdbregs.regs32[GDB32_R0 + 14]); context->pcState(gdbregs.regs32[GDB32_R0 + 7]); //CPSR context->setMiscRegNoEffect(MISCREG_CPSR, gdbregs.regs32[GDB32_CPSR]); //vfpv3/neon floating point registers (32 double or 64 float) for (int i = 0; i < NumFloatV7ArchRegs; ++i) context->setFloatRegBits(i, gdbregs.regs32[GDB32_F0 + i]); //FPSCR context->setMiscReg(MISCREG_FPSCR, gdbregs.regs32[GDB32_FPSCR]); } } // Write bytes to kernel address space for debugger. bool RemoteGDB::write(Addr vaddr, size_t size, const char *data) { return BaseRemoteGDB::write(vaddr, size, data); }