stacktrace.cc (2665:a124942bacb8) | stacktrace.cc (2680:246e7104f744) |
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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; --- 22 unchanged lines hidden (view full) --- 31#include <string> 32 33#include "arch/alpha/isa_traits.hh" 34#include "arch/alpha/stacktrace.hh" 35#include "arch/alpha/vtophys.hh" 36#include "base/bitfield.hh" 37#include "base/trace.hh" 38#include "cpu/base.hh" | 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; --- 22 unchanged lines hidden (view full) --- 31#include <string> 32 33#include "arch/alpha/isa_traits.hh" 34#include "arch/alpha/stacktrace.hh" 35#include "arch/alpha/vtophys.hh" 36#include "base/bitfield.hh" 37#include "base/trace.hh" 38#include "cpu/base.hh" |
39#include "cpu/exec_context.hh" | 39#include "cpu/thread_context.hh" |
40#include "sim/system.hh" 41 42using namespace std; 43using namespace AlphaISA; 44 | 40#include "sim/system.hh" 41 42using namespace std; 43using namespace AlphaISA; 44 |
45ProcessInfo::ProcessInfo(ExecContext *_xc) 46 : xc(_xc) | 45ProcessInfo::ProcessInfo(ThreadContext *_tc) 46 : tc(_tc) |
47{ 48 Addr addr = 0; 49 | 47{ 48 Addr addr = 0; 49 |
50 if (!xc->getSystemPtr()->kernelSymtab->findAddress("thread_info_size", addr)) | 50 if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_size", addr)) |
51 panic("thread info not compiled into kernel\n"); | 51 panic("thread info not compiled into kernel\n"); |
52 thread_info_size = gtoh(xc->getVirtPort()->read<int32_t>(addr)); | 52 thread_info_size = gtoh(tc->getVirtPort()->read<int32_t>(addr)); |
53 | 53 |
54 if (!xc->getSystemPtr()->kernelSymtab->findAddress("task_struct_size", addr)) | 54 if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_size", addr)) |
55 panic("thread info not compiled into kernel\n"); | 55 panic("thread info not compiled into kernel\n"); |
56 task_struct_size = gtoh(xc->getVirtPort()->read<int32_t>(addr)); | 56 task_struct_size = gtoh(tc->getVirtPort()->read<int32_t>(addr)); |
57 | 57 |
58 if (!xc->getSystemPtr()->kernelSymtab->findAddress("thread_info_task", addr)) | 58 if (!tc->getSystemPtr()->kernelSymtab->findAddress("thread_info_task", addr)) |
59 panic("thread info not compiled into kernel\n"); | 59 panic("thread info not compiled into kernel\n"); |
60 task_off = gtoh(xc->getVirtPort()->read<int32_t>(addr)); | 60 task_off = gtoh(tc->getVirtPort()->read<int32_t>(addr)); |
61 | 61 |
62 if (!xc->getSystemPtr()->kernelSymtab->findAddress("task_struct_pid", addr)) | 62 if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_pid", addr)) |
63 panic("thread info not compiled into kernel\n"); | 63 panic("thread info not compiled into kernel\n"); |
64 pid_off = gtoh(xc->getVirtPort()->read<int32_t>(addr)); | 64 pid_off = gtoh(tc->getVirtPort()->read<int32_t>(addr)); |
65 | 65 |
66 if (!xc->getSystemPtr()->kernelSymtab->findAddress("task_struct_comm", addr)) | 66 if (!tc->getSystemPtr()->kernelSymtab->findAddress("task_struct_comm", addr)) |
67 panic("thread info not compiled into kernel\n"); | 67 panic("thread info not compiled into kernel\n"); |
68 name_off = gtoh(xc->getVirtPort()->read<int32_t>(addr)); | 68 name_off = gtoh(tc->getVirtPort()->read<int32_t>(addr)); |
69} 70 71Addr 72ProcessInfo::task(Addr ksp) const 73{ 74 Addr base = ksp & ~0x3fff; 75 if (base == ULL(0xfffffc0000000000)) 76 return 0; 77 | 69} 70 71Addr 72ProcessInfo::task(Addr ksp) const 73{ 74 Addr base = ksp & ~0x3fff; 75 if (base == ULL(0xfffffc0000000000)) 76 return 0; 77 |
78 return gtoh(xc->getVirtPort()->read<Addr>(base + task_off)); | 78 return gtoh(tc->getVirtPort()->read<Addr>(base + task_off)); |
79} 80 81int 82ProcessInfo::pid(Addr ksp) const 83{ 84 Addr task = this->task(ksp); 85 if (!task) 86 return -1; 87 | 79} 80 81int 82ProcessInfo::pid(Addr ksp) const 83{ 84 Addr task = this->task(ksp); 85 if (!task) 86 return -1; 87 |
88 return gtoh(xc->getVirtPort()->read<uint16_t>(task + pid_off)); | 88 return gtoh(tc->getVirtPort()->read<uint16_t>(task + pid_off)); |
89} 90 91string 92ProcessInfo::name(Addr ksp) const 93{ 94 Addr task = this->task(ksp); 95 if (!task) 96 return "console"; 97 98 char comm[256]; | 89} 90 91string 92ProcessInfo::name(Addr ksp) const 93{ 94 Addr task = this->task(ksp); 95 if (!task) 96 return "console"; 97 98 char comm[256]; |
99 CopyStringOut(xc, comm, task + name_off, sizeof(comm)); | 99 CopyStringOut(tc, comm, task + name_off, sizeof(comm)); |
100 if (!comm[0]) 101 return "startup"; 102 103 return comm; 104} 105 106StackTrace::StackTrace() | 100 if (!comm[0]) 101 return "startup"; 102 103 return comm; 104} 105 106StackTrace::StackTrace() |
107 : xc(0), stack(64) | 107 : tc(0), stack(64) |
108{ 109} 110 | 108{ 109} 110 |
111StackTrace::StackTrace(ExecContext *_xc, StaticInstPtr inst) 112 : xc(0), stack(64) | 111StackTrace::StackTrace(ThreadContext *_tc, StaticInstPtr inst) 112 : tc(0), stack(64) |
113{ | 113{ |
114 trace(_xc, inst); | 114 trace(_tc, inst); |
115} 116 117StackTrace::~StackTrace() 118{ 119} 120 121void | 115} 116 117StackTrace::~StackTrace() 118{ 119} 120 121void |
122StackTrace::trace(ExecContext *_xc, bool is_call) | 122StackTrace::trace(ThreadContext *_tc, bool is_call) |
123{ | 123{ |
124 xc = _xc; | 124 tc = _tc; |
125 | 125 |
126 bool usermode = (xc->readMiscReg(AlphaISA::IPR_DTB_CM) & 0x18) != 0; | 126 bool usermode = (tc->readMiscReg(AlphaISA::IPR_DTB_CM) & 0x18) != 0; |
127 | 127 |
128 Addr pc = xc->readNextPC(); 129 bool kernel = xc->getSystemPtr()->kernelStart <= pc && 130 pc <= xc->getSystemPtr()->kernelEnd; | 128 Addr pc = tc->readNextPC(); 129 bool kernel = tc->getSystemPtr()->kernelStart <= pc && 130 pc <= tc->getSystemPtr()->kernelEnd; |
131 132 if (usermode) { 133 stack.push_back(user); 134 return; 135 } 136 137 if (!kernel) { 138 stack.push_back(console); 139 return; 140 } 141 | 131 132 if (usermode) { 133 stack.push_back(user); 134 return; 135 } 136 137 if (!kernel) { 138 stack.push_back(console); 139 return; 140 } 141 |
142 SymbolTable *symtab = xc->getSystemPtr()->kernelSymtab; 143 Addr ksp = xc->readIntReg(TheISA::StackPointerReg); | 142 SymbolTable *symtab = tc->getSystemPtr()->kernelSymtab; 143 Addr ksp = tc->readIntReg(TheISA::StackPointerReg); |
144 Addr bottom = ksp & ~0x3fff; 145 Addr addr; 146 147 if (is_call) { 148 if (!symtab->findNearestAddr(pc, addr)) 149 panic("could not find address %#x", pc); 150 151 stack.push_back(addr); | 144 Addr bottom = ksp & ~0x3fff; 145 Addr addr; 146 147 if (is_call) { 148 if (!symtab->findNearestAddr(pc, addr)) 149 panic("could not find address %#x", pc); 150 151 stack.push_back(addr); |
152 pc = xc->readPC(); | 152 pc = tc->readPC(); |
153 } 154 155 Addr ra; 156 int size; 157 158 while (ksp > bottom) { 159 if (!symtab->findNearestAddr(pc, addr)) 160 panic("could not find symbol for pc=%#x", pc); --- 15 unchanged lines hidden (view full) --- 176 177 pc = ra; 178 ksp += size; 179 } else { 180 stack.push_back(unknown); 181 return; 182 } 183 | 153 } 154 155 Addr ra; 156 int size; 157 158 while (ksp > bottom) { 159 if (!symtab->findNearestAddr(pc, addr)) 160 panic("could not find symbol for pc=%#x", pc); --- 15 unchanged lines hidden (view full) --- 176 177 pc = ra; 178 ksp += size; 179 } else { 180 stack.push_back(unknown); 181 return; 182 } 183 |
184 bool kernel = xc->getSystemPtr()->kernelStart <= pc && 185 pc <= xc->getSystemPtr()->kernelEnd; | 184 bool kernel = tc->getSystemPtr()->kernelStart <= pc && 185 pc <= tc->getSystemPtr()->kernelEnd; |
186 if (!kernel) 187 return; 188 189 if (stack.size() >= 1000) 190 panic("unwinding too far"); 191 } 192 193 panic("unwinding too far"); 194} 195 196bool 197StackTrace::isEntry(Addr addr) 198{ | 186 if (!kernel) 187 return; 188 189 if (stack.size() >= 1000) 190 panic("unwinding too far"); 191 } 192 193 panic("unwinding too far"); 194} 195 196bool 197StackTrace::isEntry(Addr addr) 198{ |
199 if (addr == xc->readMiscReg(AlphaISA::IPR_PALtemp12)) | 199 if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp12)) |
200 return true; 201 | 200 return true; 201 |
202 if (addr == xc->readMiscReg(AlphaISA::IPR_PALtemp7)) | 202 if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp7)) |
203 return true; 204 | 203 return true; 204 |
205 if (addr == xc->readMiscReg(AlphaISA::IPR_PALtemp11)) | 205 if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp11)) |
206 return true; 207 | 206 return true; 207 |
208 if (addr == xc->readMiscReg(AlphaISA::IPR_PALtemp21)) | 208 if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp21)) |
209 return true; 210 | 209 return true; 210 |
211 if (addr == xc->readMiscReg(AlphaISA::IPR_PALtemp9)) | 211 if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp9)) |
212 return true; 213 | 212 return true; 213 |
214 if (addr == xc->readMiscReg(AlphaISA::IPR_PALtemp2)) | 214 if (addr == tc->readMiscReg(AlphaISA::IPR_PALtemp2)) |
215 return true; 216 217 return false; 218} 219 220bool 221StackTrace::decodeStack(MachInst inst, int &disp) 222{ --- 68 unchanged lines hidden (view full) --- 291StackTrace::decodePrologue(Addr sp, Addr callpc, Addr func, 292 int &size, Addr &ra) 293{ 294 size = 0; 295 ra = 0; 296 297 for (Addr pc = func; pc < callpc; pc += sizeof(MachInst)) { 298 MachInst inst; | 215 return true; 216 217 return false; 218} 219 220bool 221StackTrace::decodeStack(MachInst inst, int &disp) 222{ --- 68 unchanged lines hidden (view full) --- 291StackTrace::decodePrologue(Addr sp, Addr callpc, Addr func, 292 int &size, Addr &ra) 293{ 294 size = 0; 295 ra = 0; 296 297 for (Addr pc = func; pc < callpc; pc += sizeof(MachInst)) { 298 MachInst inst; |
299 CopyOut(xc, (uint8_t *)&inst, pc, sizeof(MachInst)); | 299 CopyOut(tc, (uint8_t *)&inst, pc, sizeof(MachInst)); |
300 301 int reg, disp; 302 if (decodeStack(inst, disp)) { 303 if (size) { 304 // panic("decoding frame size again"); 305 return true; 306 } 307 size += disp; 308 } else if (decodeSave(inst, reg, disp)) { 309 if (!ra && reg == ReturnAddressReg) { | 300 301 int reg, disp; 302 if (decodeStack(inst, disp)) { 303 if (size) { 304 // panic("decoding frame size again"); 305 return true; 306 } 307 size += disp; 308 } else if (decodeSave(inst, reg, disp)) { 309 if (!ra && reg == ReturnAddressReg) { |
310 CopyOut(xc, (uint8_t *)&ra, sp + disp, sizeof(Addr)); | 310 CopyOut(tc, (uint8_t *)&ra, sp + disp, sizeof(Addr)); |
311 if (!ra) { 312 // panic("no return address value pc=%#x\n", pc); 313 return false; 314 } 315 } 316 } 317 } 318 319 return true; 320} 321 322#if TRACING_ON 323void 324StackTrace::dump() 325{ | 311 if (!ra) { 312 // panic("no return address value pc=%#x\n", pc); 313 return false; 314 } 315 } 316 } 317 } 318 319 return true; 320} 321 322#if TRACING_ON 323void 324StackTrace::dump() 325{ |
326 StringWrap name(xc->getCpuPtr()->name()); 327 SymbolTable *symtab = xc->getSystemPtr()->kernelSymtab; | 326 StringWrap name(tc->getCpuPtr()->name()); 327 SymbolTable *symtab = tc->getSystemPtr()->kernelSymtab; |
328 329 DPRINTFN("------ Stack ------\n"); 330 331 string symbol; 332 for (int i = 0, size = stack.size(); i < size; ++i) { 333 Addr addr = stack[size - i - 1]; 334 if (addr == user) 335 symbol = "user"; 336 else if (addr == console) 337 symbol = "console"; 338 else if (addr == unknown) 339 symbol = "unknown"; 340 else 341 symtab->findSymbol(addr, symbol); 342 343 DPRINTFN("%#x: %s\n", addr, symbol); 344 } 345} 346#endif | 328 329 DPRINTFN("------ Stack ------\n"); 330 331 string symbol; 332 for (int i = 0, size = stack.size(); i < size; ++i) { 333 Addr addr = stack[size - i - 1]; 334 if (addr == user) 335 symbol = "user"; 336 else if (addr == console) 337 symbol = "console"; 338 else if (addr == unknown) 339 symbol = "unknown"; 340 else 341 symtab->findSymbol(addr, symbol); 342 343 DPRINTFN("%#x: %s\n", addr, symbol); 344 } 345} 346#endif |