stacktrace.cc (5567:8fc3b004b0df) | stacktrace.cc (6378:4a2ff62c3b4f) |
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1/* 2 * Copyright (c) 2004-2005 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; --- 28 unchanged lines hidden (view full) --- 37#include "base/trace.hh" 38#include "cpu/base.hh" 39#include "cpu/thread_context.hh" 40#include "sim/system.hh" 41 42using namespace std; 43using namespace MipsISA; 44 | 1/* 2 * Copyright (c) 2004-2005 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; --- 28 unchanged lines hidden (view full) --- 37#include "base/trace.hh" 38#include "cpu/base.hh" 39#include "cpu/thread_context.hh" 40#include "sim/system.hh" 41 42using namespace std; 43using namespace MipsISA; 44 |
45ProcessInfo::ProcessInfo(ThreadContext *_tc) 46 : tc(_tc) 47{ 48// Addr addr = 0; | 45ProcessInfo::ProcessInfo(ThreadContext *_tc) : tc(_tc) 46{} |
49 | 47 |
50 VirtualPort *vp; 51 52 vp = tc->getVirtPort(); 53 54// if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_size", addr)) 55// panic("thread info not compiled into kernel\n"); 56// thread_info_size = vp->readGtoH<int32_t>(addr); 57 58// if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_size", addr)) 59// panic("thread info not compiled into kernel\n"); 60// task_struct_size = vp->readGtoH<int32_t>(addr); 61 62// if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_task", addr)) 63// panic("thread info not compiled into kernel\n"); 64// task_off = vp->readGtoH<int32_t>(addr); 65 66// if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_pid", addr)) 67// panic("thread info not compiled into kernel\n"); 68// pid_off = vp->readGtoH<int32_t>(addr); 69 70// if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_comm", addr)) 71// panic("thread info not compiled into kernel\n"); 72// name_off = vp->readGtoH<int32_t>(addr); 73} 74 | |
75Addr 76ProcessInfo::task(Addr ksp) const 77{ 78 Addr base = ksp & ~0x3fff; 79 if (base == ULL(0xfffffc0000000000)) 80 return 0; 81 82 Addr tsk; --- 52 unchanged lines hidden (view full) --- 135StackTrace::~StackTrace() 136{ 137} 138 139void 140StackTrace::trace(ThreadContext *_tc, bool is_call) 141{ 142 tc = _tc; | 48Addr 49ProcessInfo::task(Addr ksp) const 50{ 51 Addr base = ksp & ~0x3fff; 52 if (base == ULL(0xfffffc0000000000)) 53 return 0; 54 55 Addr tsk; --- 52 unchanged lines hidden (view full) --- 108StackTrace::~StackTrace() 109{ 110} 111 112void 113StackTrace::trace(ThreadContext *_tc, bool is_call) 114{ 115 tc = _tc; |
143 /* FIXME - Jaidev - What is IPR_DTB_CM in Alpha? */ | |
144 bool usermode = 0; | 116 bool usermode = 0; |
145 //(tc->readMiscReg(MipsISA::IPR_DTB_CM) & 0x18) != 0; | |
146 | 117 |
147// Addr pc = tc->readNextPC(); 148// bool kernel = tc->getSystemPtr()->kernelStart <= pc && 149// pc <= tc->getSystemPtr()->kernelEnd; 150 | |
151 if (usermode) { 152 stack.push_back(user); 153 return; 154 } | 118 if (usermode) { 119 stack.push_back(user); 120 return; 121 } |
155 156// if (!kernel) { 157// stack.push_back(console); 158// return; 159// } 160 161// SymbolTable *symtab = tc->getSystemPtr()->kernelSymtab; 162// Addr ksp = tc->readIntReg(MipsISA::StackPointerReg); 163// Addr bottom = ksp & ~0x3fff; 164// Addr addr; 165 166// if (is_call) { 167// if (!symtab->findNearestAddr(pc, addr)) 168// panic("could not find address %#x", pc); 169 170// stack.push_back(addr); 171// pc = tc->readPC(); 172// } 173 174// Addr ra; 175// int size; 176 177// while (ksp > bottom) { 178// if (!symtab->findNearestAddr(pc, addr)) 179// panic("could not find symbol for pc=%#x", pc); 180// assert(pc >= addr && "symbol botch: callpc < func"); 181 182// stack.push_back(addr); 183 184// if (isEntry(addr)) 185// return; 186 187// if (decodePrologue(ksp, pc, addr, size, ra)) { 188// if (!ra) 189// return; 190 191// if (size <= 0) { 192// stack.push_back(unknown); 193// return; 194// } 195 196// pc = ra; 197// ksp += size; 198// } else { 199// stack.push_back(unknown); 200// return; 201// } 202 203// bool kernel = tc->getSystemPtr()->kernelStart <= pc && 204// pc <= tc->getSystemPtr()->kernelEnd; 205// if (!kernel) 206// return; 207 208// if (stack.size() >= 1000) 209// panic("unwinding too far"); 210// } 211 212// panic("unwinding too far"); | |
213} 214 215bool 216StackTrace::isEntry(Addr addr) 217{ | 122} 123 124bool 125StackTrace::isEntry(Addr addr) 126{ |
218 /* if (addr == tc->readMiscReg(MipsISA::IPR_PALtemp2)) 219 return true;*/ 220 | |
221 return false; 222} 223 224bool 225StackTrace::decodeStack(MachInst inst, int &disp) 226{ 227 // lda $sp, -disp($sp) 228 // --- 71 unchanged lines hidden (view full) --- 300 301 for (Addr pc = func; pc < callpc; pc += sizeof(MachInst)) { 302 MachInst inst; 303 CopyOut(tc, (uint8_t *)&inst, pc, sizeof(MachInst)); 304 305 int reg, disp; 306 if (decodeStack(inst, disp)) { 307 if (size) { | 127 return false; 128} 129 130bool 131StackTrace::decodeStack(MachInst inst, int &disp) 132{ 133 // lda $sp, -disp($sp) 134 // --- 71 unchanged lines hidden (view full) --- 206 207 for (Addr pc = func; pc < callpc; pc += sizeof(MachInst)) { 208 MachInst inst; 209 CopyOut(tc, (uint8_t *)&inst, pc, sizeof(MachInst)); 210 211 int reg, disp; 212 if (decodeStack(inst, disp)) { 213 if (size) { |
308 // panic("decoding frame size again"); | |
309 return true; 310 } 311 size += disp; 312 } else if (decodeSave(inst, reg, disp)) { 313 if (!ra && reg == ReturnAddressReg) { 314 CopyOut(tc, (uint8_t *)&ra, sp + disp, sizeof(Addr)); 315 if (!ra) { | 214 return true; 215 } 216 size += disp; 217 } else if (decodeSave(inst, reg, disp)) { 218 if (!ra && reg == ReturnAddressReg) { 219 CopyOut(tc, (uint8_t *)&ra, sp + disp, sizeof(Addr)); 220 if (!ra) { |
316 // panic("no return address value pc=%#x\n", pc); | |
317 return false; 318 } 319 } 320 } 321 } 322 323 return true; 324} 325 326#if TRACING_ON 327void 328StackTrace::dump() 329{ | 221 return false; 222 } 223 } 224 } 225 } 226 227 return true; 228} 229 230#if TRACING_ON 231void 232StackTrace::dump() 233{ |
330 StringWrap name(tc->getCpuPtr()->name()); 331// SymbolTable *symtab = tc->getSystemPtr()->kernelSymtab; 332 333 DPRINTFN("------ Stack ------\n"); 334 335// string symbol; 336// for (int i = 0, size = stack.size(); i < size; ++i) { 337// Addr addr = stack[size - i - 1]; 338// if (addr == user) 339// symbol = "user"; 340// else if (addr == console) 341// symbol = "console"; 342// else if (addr == unknown) 343// symbol = "unknown"; 344// else 345// symtab->findSymbol(addr, symbol); 346 347// DPRINTFN("%#x: %s\n", addr, symbol); 348// } | 234 panic("Stack trace dump not implemented.\n"); |
349} 350#endif | 235} 236#endif |