stacktrace.cc revision 11320
1/* 2 * Copyright (c) 2005 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Nathan Binkert 29 */ 30 31#include <string> 32 33#include "arch/arm/isa_traits.hh" 34#include "arch/arm/stacktrace.hh" 35#include "arch/arm/vtophys.hh" 36#include "base/bitfield.hh" 37#include "base/trace.hh" 38#include "cpu/base.hh" 39#include "cpu/thread_context.hh" 40#include "mem/fs_translating_port_proxy.hh" 41#include "sim/system.hh" 42 43using namespace std; 44namespace ArmISA 45{ 46 ProcessInfo::ProcessInfo(ThreadContext *_tc) 47 : tc(_tc) 48 { 49 Addr addr = 0; 50 51 FSTranslatingPortProxy &vp = tc->getVirtProxy(); 52 53 if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_size", addr)) 54 panic("thread info not compiled into kernel\n"); 55 thread_info_size = vp.readGtoH<int32_t>(addr); 56 57 if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_size", addr)) 58 panic("thread info not compiled into kernel\n"); 59 task_struct_size = vp.readGtoH<int32_t>(addr); 60 61 if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_task", addr)) 62 panic("thread info not compiled into kernel\n"); 63 task_off = vp.readGtoH<int32_t>(addr); 64 65 if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_pid", addr)) 66 panic("thread info not compiled into kernel\n"); 67 pid_off = vp.readGtoH<int32_t>(addr); 68 69 if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_comm", addr)) 70 panic("thread info not compiled into kernel\n"); 71 name_off = vp.readGtoH<int32_t>(addr); 72 } 73 74 Addr 75 ProcessInfo::task(Addr ksp) const 76 { 77 Addr base = ksp & ~0x1fff; 78 if (base == ULL(0xffffffffc0000000)) 79 return 0; 80 81 Addr tsk; 82 83 FSTranslatingPortProxy &vp = tc->getVirtProxy(); 84 tsk = vp.readGtoH<Addr>(base + task_off); 85 86 return tsk; 87 } 88 89 int 90 ProcessInfo::pid(Addr ksp) const 91 { 92 Addr task = this->task(ksp); 93 if (!task) 94 return -1; 95 96 uint16_t pd; 97 98 FSTranslatingPortProxy &vp = tc->getVirtProxy(); 99 pd = vp.readGtoH<uint16_t>(task + pid_off); 100 101 return pd; 102 } 103 104 string 105 ProcessInfo::name(Addr ksp) const 106 { 107 Addr task = this->task(ksp); 108 if (!task) 109 return "unknown"; 110 111 char comm[256]; 112 CopyStringOut(tc, comm, task + name_off, sizeof(comm)); 113 if (!comm[0]) 114 return "startup"; 115 116 return comm; 117 } 118 119 StackTrace::StackTrace() 120 : tc(0), stack(64) 121 { 122 } 123 124 StackTrace::StackTrace(ThreadContext *_tc, const StaticInstPtr &inst) 125 : tc(0), stack(64) 126 { 127 trace(_tc, inst); 128 } 129 130 StackTrace::~StackTrace() 131 { 132 } 133 134 void 135 StackTrace::trace(ThreadContext *_tc, bool is_call) 136 { 137 } 138 139 bool 140 StackTrace::isEntry(Addr addr) 141 { 142 return false; 143 } 144 145 bool 146 StackTrace::decodeStack(MachInst inst, int &disp) 147 { 148 return false; 149 } 150 151 bool 152 StackTrace::decodeSave(MachInst inst, int ®, int &disp) 153 { 154 return false; 155 } 156 157 /* 158 * Decode the function prologue for the function we're in, and note 159 * which registers are stored where, and how large the stack frame is. 160 */ 161 bool 162 StackTrace::decodePrologue(Addr sp, Addr callpc, Addr func, 163 int &size, Addr &ra) 164 { 165 return false; 166 } 167 168#if TRACING_ON 169 void 170 StackTrace::dump() 171 { 172 DPRINTFN("------ Stack ------\n"); 173 174 DPRINTFN(" Not implemented\n"); 175 } 176#endif 177} 178