remote_gdb.cc revision 10037
13536SN/A/* 210037SARM gem5 Developers * Copyright (c) 2010, 2013 ARM Limited 37752SWilliam.Wang@arm.com * All rights reserved 47752SWilliam.Wang@arm.com * 57752SWilliam.Wang@arm.com * The license below extends only to copyright in the software and shall 67752SWilliam.Wang@arm.com * not be construed as granting a license to any other intellectual 77752SWilliam.Wang@arm.com * property including but not limited to intellectual property relating 87752SWilliam.Wang@arm.com * to a hardware implementation of the functionality of the software 97752SWilliam.Wang@arm.com * licensed hereunder. You may use the software subject to the license 107752SWilliam.Wang@arm.com * terms below provided that you ensure that this notice is replicated 117752SWilliam.Wang@arm.com * unmodified and in its entirety in all distributions of the software, 127752SWilliam.Wang@arm.com * modified or unmodified, in source code or in binary form. 137752SWilliam.Wang@arm.com * 143536SN/A * Copyright (c) 2002-2005 The Regents of The University of Michigan 153536SN/A * All rights reserved. 163536SN/A * 173536SN/A * Redistribution and use in source and binary forms, with or without 183536SN/A * modification, are permitted provided that the following conditions are 193536SN/A * met: redistributions of source code must retain the above copyright 203536SN/A * notice, this list of conditions and the following disclaimer; 213536SN/A * redistributions in binary form must reproduce the above copyright 223536SN/A * notice, this list of conditions and the following disclaimer in the 233536SN/A * documentation and/or other materials provided with the distribution; 243536SN/A * neither the name of the copyright holders nor the names of its 253536SN/A * contributors may be used to endorse or promote products derived from 263536SN/A * this software without specific prior written permission. 273536SN/A * 283536SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 293536SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 303536SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 313536SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 323536SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 333536SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 343536SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 353536SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 363536SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 373536SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 383536SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 393536SN/A * 403536SN/A * Authors: Nathan Binkert 417752SWilliam.Wang@arm.com * William Wang 423536SN/A */ 433536SN/A 443536SN/A/* 458332Snate@binkert.org * Copyright (c) 1990, 1993 The Regents of the University of California 468332Snate@binkert.org * All rights reserved 473536SN/A * 483536SN/A * This software was developed by the Computer Systems Engineering group 493536SN/A * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 503536SN/A * contributed to Berkeley. 513536SN/A * 523536SN/A * All advertising materials mentioning features or use of this software 533536SN/A * must display the following acknowledgement: 545543SN/A * This product includes software developed by the University of 555543SN/A * California, Lawrence Berkeley Laboratories. 563536SN/A * 573536SN/A * Redistribution and use in source and binary forms, with or without 583536SN/A * modification, are permitted provided that the following conditions 593536SN/A * are met: 603536SN/A * 1. Redistributions of source code must retain the above copyright 613536SN/A * notice, this list of conditions and the following disclaimer. 623536SN/A * 2. Redistributions in binary form must reproduce the above copyright 633536SN/A * notice, this list of conditions and the following disclaimer in the 643536SN/A * documentation and/or other materials provided with the distribution. 653536SN/A * 3. All advertising materials mentioning features or use of this software 663536SN/A * must display the following acknowledgement: 675543SN/A * This product includes software developed by the University of 685543SN/A * California, Berkeley and its contributors. 693536SN/A * 4. Neither the name of the University nor the names of its contributors 703536SN/A * may be used to endorse or promote products derived from this software 713536SN/A * without specific prior written permission. 723536SN/A * 733536SN/A * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 743536SN/A * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 753536SN/A * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 763536SN/A * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 773536SN/A * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 783536SN/A * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 793536SN/A * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 803536SN/A * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 813536SN/A * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 823536SN/A * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 833536SN/A * SUCH DAMAGE. 843536SN/A * 855543SN/A * @(#)kgdb_stub.c 8.4 (Berkeley) 1/12/94 863536SN/A */ 873536SN/A 883536SN/A/*- 893536SN/A * Copyright (c) 2001 The NetBSD Foundation, Inc. 903536SN/A * All rights reserved. 913536SN/A * 923536SN/A * This code is derived from software contributed to The NetBSD Foundation 933536SN/A * by Jason R. Thorpe. 943536SN/A * 953536SN/A * Redistribution and use in source and binary forms, with or without 963536SN/A * modification, are permitted provided that the following conditions 973536SN/A * are met: 983536SN/A * 1. Redistributions of source code must retain the above copyright 993536SN/A * notice, this list of conditions and the following disclaimer. 1003536SN/A * 2. Redistributions in binary form must reproduce the above copyright 1013536SN/A * notice, this list of conditions and the following disclaimer in the 1023536SN/A * documentation and/or other materials provided with the distribution. 1033536SN/A * 3. All advertising materials mentioning features or use of this software 1043536SN/A * must display the following acknowledgement: 1055543SN/A * This product includes software developed by the NetBSD 1065543SN/A * Foundation, Inc. and its contributors. 1073536SN/A * 4. Neither the name of The NetBSD Foundation nor the names of its 1083536SN/A * contributors may be used to endorse or promote products derived 1093536SN/A * from this software without specific prior written permission. 1103536SN/A * 1113536SN/A * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 1123536SN/A * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 1133536SN/A * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 1143536SN/A * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 1153536SN/A * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 1163536SN/A * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 1173536SN/A * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 1183536SN/A * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 1193536SN/A * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 1203536SN/A * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 1213536SN/A * POSSIBILITY OF SUCH DAMAGE. 1223536SN/A */ 1233536SN/A 1243536SN/A/* 1253536SN/A * $NetBSD: kgdb_stub.c,v 1.8 2001/07/07 22:58:00 wdk Exp $ 1263536SN/A * 1273536SN/A * Taken from NetBSD 1283536SN/A * 1293536SN/A * "Stub" to allow remote cpu to debug over a serial line using gdb. 1303536SN/A */ 1313536SN/A 1323536SN/A#include <sys/signal.h> 1335569SN/A#include <unistd.h> 1343536SN/A 1353536SN/A#include <string> 1363536SN/A 1379020Sgblack@eecs.umich.edu#include "arch/arm/decoder.hh" 1388229Snate@binkert.org#include "arch/arm/pagetable.hh" 1398229Snate@binkert.org#include "arch/arm/registers.hh" 1408229Snate@binkert.org#include "arch/arm/remote_gdb.hh" 14110037SARM gem5 Developers#include "arch/arm/system.hh" 1427752SWilliam.Wang@arm.com#include "arch/arm/utility.hh" 1437752SWilliam.Wang@arm.com#include "arch/arm/vtophys.hh" 1443536SN/A#include "base/intmath.hh" 1453536SN/A#include "base/remote_gdb.hh" 1463536SN/A#include "base/socket.hh" 1473536SN/A#include "base/trace.hh" 1488229Snate@binkert.org#include "cpu/static_inst.hh" 1493536SN/A#include "cpu/thread_context.hh" 1507752SWilliam.Wang@arm.com#include "cpu/thread_state.hh" 1518232Snate@binkert.org#include "debug/GDBAcc.hh" 1528232Snate@binkert.org#include "debug/GDBMisc.hh" 1538229Snate@binkert.org#include "mem/page_table.hh" 1543536SN/A#include "mem/physical.hh" 1553536SN/A#include "mem/port.hh" 1568782Sgblack@eecs.umich.edu#include "sim/full_system.hh" 1573536SN/A#include "sim/system.hh" 1583536SN/A 1593536SN/Ausing namespace std; 1607752SWilliam.Wang@arm.comusing namespace ArmISA; 1613536SN/A 1625569SN/ARemoteGDB::RemoteGDB(System *_system, ThreadContext *tc) 16310037SARM gem5 Developers : BaseRemoteGDB(_system, tc, MAX_NUMREGS) 1643536SN/A{ 1653536SN/A} 1663536SN/A 1675569SN/A/* 1685569SN/A * Determine if the mapping at va..(va+len) is valid. 1695569SN/A */ 1703536SN/Abool 1713536SN/ARemoteGDB::acc(Addr va, size_t len) 1723536SN/A{ 1738782Sgblack@eecs.umich.edu if (FullSystem) { 1748782Sgblack@eecs.umich.edu Addr last_va; 1758782Sgblack@eecs.umich.edu va = truncPage(va); 1768782Sgblack@eecs.umich.edu last_va = roundPage(va + len); 1773536SN/A 1788782Sgblack@eecs.umich.edu do { 1798782Sgblack@eecs.umich.edu if (virtvalid(context, va)) { 1808782Sgblack@eecs.umich.edu return true; 1818782Sgblack@eecs.umich.edu } 1828782Sgblack@eecs.umich.edu va += PageBytes; 1838782Sgblack@eecs.umich.edu } while (va < last_va); 1848782Sgblack@eecs.umich.edu 1858782Sgblack@eecs.umich.edu DPRINTF(GDBAcc, "acc: %#x mapping is valid\n", va); 1868782Sgblack@eecs.umich.edu return true; 1878782Sgblack@eecs.umich.edu } else { 1888782Sgblack@eecs.umich.edu TlbEntry entry; 1898782Sgblack@eecs.umich.edu //Check to make sure the first byte is mapped into the processes address 1908782Sgblack@eecs.umich.edu //space. 1918782Sgblack@eecs.umich.edu if (context->getProcessPtr()->pTable->lookup(va, entry)) 1923536SN/A return true; 1938782Sgblack@eecs.umich.edu return false; 1948782Sgblack@eecs.umich.edu } 1953536SN/A} 1963536SN/A 1975569SN/A/* 1985569SN/A * Translate the kernel debugger register format into the GDB register 1995569SN/A * format. 2005569SN/A */ 2013536SN/Avoid 2023536SN/ARemoteGDB::getregs() 2033536SN/A{ 2047752SWilliam.Wang@arm.com DPRINTF(GDBAcc, "getregs in remotegdb \n"); 2057752SWilliam.Wang@arm.com 2063579SN/A memset(gdbregs.regs, 0, gdbregs.bytes()); 2073536SN/A 20810037SARM gem5 Developers if (inAArch64(context)) { // AArch64 20910037SARM gem5 Developers // x0-x31 21010037SARM gem5 Developers for (int i = 0; i < 32; ++i) { 21110037SARM gem5 Developers gdbregs.regs[REG_X0 + i] = context->readIntReg(INTREG_X0 + i); 21210037SARM gem5 Developers } 21310037SARM gem5 Developers // pc 21410037SARM gem5 Developers gdbregs.regs[REG_PC_64] = context->pcState().pc(); 21510037SARM gem5 Developers // cpsr 21610037SARM gem5 Developers gdbregs.regs[REG_CPSR_64] = context->readMiscRegNoEffect(MISCREG_CPSR); 21710037SARM gem5 Developers // v0-v31 21810037SARM gem5 Developers for (int i = 0; i < 32; ++i) { 21910037SARM gem5 Developers gdbregs.regs[REG_V0 + 2 * i] = static_cast<uint64_t>( 22010037SARM gem5 Developers context->readFloatRegBits(i * 4 + 3)) << 32 | 22110037SARM gem5 Developers context->readFloatRegBits(i * 4 + 2); 22210037SARM gem5 Developers gdbregs.regs[REG_V0 + 2 * i + 1] = static_cast<uint64_t>( 22310037SARM gem5 Developers context->readFloatRegBits(i * 4 + 1)) << 32 | 22410037SARM gem5 Developers context->readFloatRegBits(i * 4 + 0); 22510037SARM gem5 Developers } 22610037SARM gem5 Developers } else { // AArch32 22710037SARM gem5 Developers // R0-R15 supervisor mode 22810037SARM gem5 Developers // arm registers are 32 bits wide, gdb registers are 64 bits wide two 22910037SARM gem5 Developers // arm registers are packed into one gdb register (little endian) 23010037SARM gem5 Developers gdbregs.regs[REG_R0 + 0] = context->readIntReg(INTREG_R1) << 32 | 23110037SARM gem5 Developers context->readIntReg(INTREG_R0); 23210037SARM gem5 Developers gdbregs.regs[REG_R0 + 1] = context->readIntReg(INTREG_R3) << 32 | 23310037SARM gem5 Developers context->readIntReg(INTREG_R2); 23410037SARM gem5 Developers gdbregs.regs[REG_R0 + 2] = context->readIntReg(INTREG_R5) << 32 | 23510037SARM gem5 Developers context->readIntReg(INTREG_R4); 23610037SARM gem5 Developers gdbregs.regs[REG_R0 + 3] = context->readIntReg(INTREG_R7) << 32 | 23710037SARM gem5 Developers context->readIntReg(INTREG_R6); 23810037SARM gem5 Developers gdbregs.regs[REG_R0 + 4] = context->readIntReg(INTREG_R9) << 32 | 23910037SARM gem5 Developers context->readIntReg(INTREG_R8); 24010037SARM gem5 Developers gdbregs.regs[REG_R0 + 5] = context->readIntReg(INTREG_R11) << 32| 24110037SARM gem5 Developers context->readIntReg(INTREG_R10); 24210037SARM gem5 Developers gdbregs.regs[REG_R0 + 6] = context->readIntReg(INTREG_SP) << 32 | 24310037SARM gem5 Developers context->readIntReg(INTREG_R12); 24410037SARM gem5 Developers gdbregs.regs[REG_R0 + 7] = context->pcState().pc() << 32 | 24510037SARM gem5 Developers context->readIntReg(INTREG_LR); 2463536SN/A 24710037SARM gem5 Developers // CPSR 24810037SARM gem5 Developers gdbregs.regs[REG_CPSR] = context->readMiscRegNoEffect(MISCREG_CPSR); 2497752SWilliam.Wang@arm.com 25010037SARM gem5 Developers // vfpv3/neon floating point registers (32 double or 64 float) 2517752SWilliam.Wang@arm.com 25210037SARM gem5 Developers gdbregs.regs[REG_F0] = 25310037SARM gem5 Developers static_cast<uint64_t>(context->readFloatRegBits(0)) << 32 | 25410037SARM gem5 Developers gdbregs.regs[REG_CPSR]; 2557752SWilliam.Wang@arm.com 25610037SARM gem5 Developers for (int i = 1; i < (NumFloatV7ArchRegs>>1); ++i) { 25710037SARM gem5 Developers gdbregs.regs[i + REG_F0] = 25810037SARM gem5 Developers static_cast<uint64_t>(context->readFloatRegBits(2*i)) << 32 | 25910037SARM gem5 Developers context->readFloatRegBits(2*i-1); 26010037SARM gem5 Developers } 26110037SARM gem5 Developers 26210037SARM gem5 Developers // FPSCR 26310037SARM gem5 Developers gdbregs.regs[REG_FPSCR] = static_cast<uint64_t>( 26410037SARM gem5 Developers context->readMiscRegNoEffect(MISCREG_FPSCR)) << 32 | 26510037SARM gem5 Developers context->readFloatRegBits(NumFloatV7ArchRegs - 1); 2663536SN/A } 2673536SN/A} 2683536SN/A 2695569SN/A/* 2705569SN/A * Translate the GDB register format into the kernel debugger register 2715569SN/A * format. 2725569SN/A */ 2733536SN/Avoid 2743536SN/ARemoteGDB::setregs() 2753536SN/A{ 2767752SWilliam.Wang@arm.com 2777752SWilliam.Wang@arm.com DPRINTF(GDBAcc, "setregs in remotegdb \n"); 27810037SARM gem5 Developers if (inAArch64(context)) { // AArch64 27910037SARM gem5 Developers // x0-x31 28010037SARM gem5 Developers for (int i = 0; i < 32; ++i) { 28110037SARM gem5 Developers context->setIntReg(INTREG_X0 + i, gdbregs.regs[REG_X0 + i]); 28210037SARM gem5 Developers } 28310037SARM gem5 Developers // pc 28410037SARM gem5 Developers context->pcState(gdbregs.regs[REG_PC_64]); 28510037SARM gem5 Developers // cpsr 28610037SARM gem5 Developers context->setMiscRegNoEffect(MISCREG_CPSR, gdbregs.regs[REG_CPSR_64]); 28710037SARM gem5 Developers // v0-v31 28810037SARM gem5 Developers for (int i = 0; i < 32; ++i) { 28910037SARM gem5 Developers context->setFloatRegBits(i * 4 + 3, 29010037SARM gem5 Developers gdbregs.regs[REG_V0 + 2 * i] >> 32); 29110037SARM gem5 Developers context->setFloatRegBits(i * 4 + 2, 29210037SARM gem5 Developers gdbregs.regs[REG_V0 + 2 * i]); 29310037SARM gem5 Developers context->setFloatRegBits(i * 4 + 1, 29410037SARM gem5 Developers gdbregs.regs[REG_V0 + 2 * i + 1] >> 32); 29510037SARM gem5 Developers context->setFloatRegBits(i * 4 + 0, 29610037SARM gem5 Developers gdbregs.regs[REG_V0 + 2 * i + 1]); 29710037SARM gem5 Developers } 29810037SARM gem5 Developers } else { // AArch32 29910037SARM gem5 Developers // R0-R15 supervisor mode 30010037SARM gem5 Developers // arm registers are 32 bits wide, gdb registers are 64 bits wide 30110037SARM gem5 Developers // two arm registers are packed into one gdb register (little endian) 30210037SARM gem5 Developers context->setIntReg(INTREG_R0 , bits(gdbregs.regs[REG_R0 + 0], 31, 0)); 30310037SARM gem5 Developers context->setIntReg(INTREG_R1 , bits(gdbregs.regs[REG_R0 + 0], 63, 32)); 30410037SARM gem5 Developers context->setIntReg(INTREG_R2 , bits(gdbregs.regs[REG_R0 + 1], 31, 0)); 30510037SARM gem5 Developers context->setIntReg(INTREG_R3 , bits(gdbregs.regs[REG_R0 + 1], 63, 32)); 30610037SARM gem5 Developers context->setIntReg(INTREG_R4 , bits(gdbregs.regs[REG_R0 + 2], 31, 0)); 30710037SARM gem5 Developers context->setIntReg(INTREG_R5 , bits(gdbregs.regs[REG_R0 + 2], 63, 32)); 30810037SARM gem5 Developers context->setIntReg(INTREG_R6 , bits(gdbregs.regs[REG_R0 + 3], 31, 0)); 30910037SARM gem5 Developers context->setIntReg(INTREG_R7 , bits(gdbregs.regs[REG_R0 + 3], 63, 32)); 31010037SARM gem5 Developers context->setIntReg(INTREG_R8 , bits(gdbregs.regs[REG_R0 + 4], 31, 0)); 31110037SARM gem5 Developers context->setIntReg(INTREG_R9 , bits(gdbregs.regs[REG_R0 + 4], 63, 32)); 31210037SARM gem5 Developers context->setIntReg(INTREG_R10, bits(gdbregs.regs[REG_R0 + 5], 31, 0)); 31310037SARM gem5 Developers context->setIntReg(INTREG_R11, bits(gdbregs.regs[REG_R0 + 5], 63, 32)); 31410037SARM gem5 Developers context->setIntReg(INTREG_R12, bits(gdbregs.regs[REG_R0 + 6], 31, 0)); 31510037SARM gem5 Developers context->setIntReg(INTREG_SP , bits(gdbregs.regs[REG_R0 + 6], 63, 32)); 31610037SARM gem5 Developers context->setIntReg(INTREG_LR , bits(gdbregs.regs[REG_R0 + 7], 31, 0)); 31710037SARM gem5 Developers context->pcState(bits(gdbregs.regs[REG_R0 + 7], 63, 32)); 3187752SWilliam.Wang@arm.com 31910037SARM gem5 Developers //CPSR 32010037SARM gem5 Developers context->setMiscRegNoEffect(MISCREG_CPSR, gdbregs.regs[REG_CPSR]); 3217752SWilliam.Wang@arm.com 32210037SARM gem5 Developers //vfpv3/neon floating point registers (32 double or 64 float) 32310037SARM gem5 Developers context->setFloatRegBits(0, gdbregs.regs[REG_F0]>>32); 3247752SWilliam.Wang@arm.com 32510037SARM gem5 Developers for (int i = 1; i < NumFloatV7ArchRegs; ++i) { 32610037SARM gem5 Developers if (i%2) { 32710037SARM gem5 Developers int j = (i+1)/2; 32810037SARM gem5 Developers context->setFloatRegBits(i, bits(gdbregs.regs[j + REG_F0], 31, 0)); 32910037SARM gem5 Developers } else { 33010037SARM gem5 Developers int j = i/2; 33110037SARM gem5 Developers context->setFloatRegBits(i, gdbregs.regs[j + REG_F0]>>32); 33210037SARM gem5 Developers } 33310037SARM gem5 Developers } 3347752SWilliam.Wang@arm.com 33510037SARM gem5 Developers //FPSCR 33610037SARM gem5 Developers context->setMiscReg(MISCREG_FPSCR, gdbregs.regs[REG_FPSCR]>>32); 3373536SN/A } 3383536SN/A} 3393536SN/A 3403536SN/Avoid 3413536SN/ARemoteGDB::clearSingleStep() 3423536SN/A{ 3433536SN/A DPRINTF(GDBMisc, "clearSingleStep bt_addr=%#x nt_addr=%#x\n", 3443550SN/A takenBkpt, notTakenBkpt); 3453536SN/A 3463550SN/A if (takenBkpt != 0) 3473536SN/A clearTempBreakpoint(takenBkpt); 3483536SN/A 3493550SN/A if (notTakenBkpt != 0) 3503536SN/A clearTempBreakpoint(notTakenBkpt); 3513536SN/A} 3523536SN/A 3533536SN/Avoid 3543536SN/ARemoteGDB::setSingleStep() 3553536SN/A{ 3567720SN/A PCState pc = context->pcState(); 3577720SN/A PCState bpc; 3583536SN/A bool set_bt = false; 3593536SN/A 3603536SN/A // User was stopped at pc, e.g. the instruction at pc was not 3613536SN/A // executed. 3627720SN/A MachInst inst = read<MachInst>(pc.pc()); 3638541Sgblack@eecs.umich.edu StaticInstPtr si = context->getDecoderPtr()->decode(inst, pc.pc()); 3643536SN/A if (si->hasBranchTarget(pc, context, bpc)) { 3653536SN/A // Don't bother setting a breakpoint on the taken branch if it 3663536SN/A // is the same as the next pc 3677720SN/A if (bpc.pc() != pc.npc()) 3683536SN/A set_bt = true; 3693536SN/A } 3703536SN/A 3713536SN/A DPRINTF(GDBMisc, "setSingleStep bt_addr=%#x nt_addr=%#x\n", 3723550SN/A takenBkpt, notTakenBkpt); 3733536SN/A 3747720SN/A setTempBreakpoint(notTakenBkpt = pc.npc()); 3753536SN/A 3763536SN/A if (set_bt) 3777720SN/A setTempBreakpoint(takenBkpt = bpc.pc()); 3783536SN/A} 3793536SN/A 3803536SN/A// Write bytes to kernel address space for debugger. 3813536SN/Abool 3823536SN/ARemoteGDB::write(Addr vaddr, size_t size, const char *data) 3833536SN/A{ 3847752SWilliam.Wang@arm.com return BaseRemoteGDB::write(vaddr, size, data); 3853536SN/A} 3863536SN/A 387