stacktrace.cc (5087:b332ea3bc5e6) | stacktrace.cc (5499:8bfc7650c344) |
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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; 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/x86/isa_traits.hh" 34#include "arch/x86/stacktrace.hh" 35#include "arch/x86/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 "sim/system.hh" 41 42using namespace std; 43namespace X86ISA 44{ 45 ProcessInfo::ProcessInfo(ThreadContext *_tc) 46 : tc(_tc) 47 { 48 Addr addr = 0; 49 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); | 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/x86/isa_traits.hh" 34#include "arch/x86/stacktrace.hh" 35#include "arch/x86/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 "sim/system.hh" 41 42using namespace std; 43namespace X86ISA 44{ 45 ProcessInfo::ProcessInfo(ThreadContext *_tc) 46 : tc(_tc) 47 { 48 Addr addr = 0; 49 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 tc->delVirtPort(vp); | |
75 } 76 77 Addr 78 ProcessInfo::task(Addr ksp) const 79 { 80 Addr base = ksp & ~0x3fff; 81 if (base == ULL(0xfffffc0000000000)) 82 return 0; 83 84 Addr tsk; 85 86 VirtualPort *vp; 87 88 vp = tc->getVirtPort(); 89 tsk = vp->readGtoH<Addr>(base + task_off); | 73 } 74 75 Addr 76 ProcessInfo::task(Addr ksp) const 77 { 78 Addr base = ksp & ~0x3fff; 79 if (base == ULL(0xfffffc0000000000)) 80 return 0; 81 82 Addr tsk; 83 84 VirtualPort *vp; 85 86 vp = tc->getVirtPort(); 87 tsk = vp->readGtoH<Addr>(base + task_off); |
90 tc->delVirtPort(vp); | |
91 92 return tsk; 93 } 94 95 int 96 ProcessInfo::pid(Addr ksp) const 97 { 98 Addr task = this->task(ksp); 99 if (!task) 100 return -1; 101 102 uint16_t pd; 103 104 VirtualPort *vp; 105 106 vp = tc->getVirtPort(); 107 pd = vp->readGtoH<uint16_t>(task + pid_off); | 88 89 return tsk; 90 } 91 92 int 93 ProcessInfo::pid(Addr ksp) const 94 { 95 Addr task = this->task(ksp); 96 if (!task) 97 return -1; 98 99 uint16_t pd; 100 101 VirtualPort *vp; 102 103 vp = tc->getVirtPort(); 104 pd = vp->readGtoH<uint16_t>(task + pid_off); |
108 tc->delVirtPort(vp); | |
109 110 return pd; 111 } 112 113 string 114 ProcessInfo::name(Addr ksp) const 115 { 116 Addr task = this->task(ksp); 117 if (!task) 118 return "console"; 119 120 char comm[256]; 121 CopyStringOut(tc, comm, task + name_off, sizeof(comm)); 122 if (!comm[0]) 123 return "startup"; 124 125 return comm; 126 } 127 128 StackTrace::StackTrace() 129 : tc(0), stack(64) 130 { 131 } 132 133 StackTrace::StackTrace(ThreadContext *_tc, StaticInstPtr inst) 134 : tc(0), stack(64) 135 { 136 trace(_tc, inst); 137 } 138 139 StackTrace::~StackTrace() 140 { 141 } 142 143 void 144 StackTrace::trace(ThreadContext *_tc, bool is_call) 145 { 146 } 147 148 bool 149 StackTrace::isEntry(Addr addr) 150 { 151 return false; 152 } 153 154 bool 155 StackTrace::decodeStack(MachInst inst, int &disp) 156 { 157 disp = 0; 158 return true; 159 } 160 161 bool 162 StackTrace::decodeSave(MachInst inst, int ®, int &disp) 163 { 164 reg = 0; 165 disp = 0; 166 return true; 167 } 168 169 /* 170 * Decode the function prologue for the function we're in, and note 171 * which registers are stored where, and how large the stack frame is. 172 */ 173 bool 174 StackTrace::decodePrologue(Addr sp, Addr callpc, Addr func, 175 int &size, Addr &ra) 176 { 177 size = 0; 178 ra = 0; 179 180 for (Addr pc = func; pc < callpc; pc += sizeof(MachInst)) { 181 MachInst inst; 182 CopyOut(tc, (uint8_t *)&inst, pc, sizeof(MachInst)); 183 184 int reg, disp; 185 if (decodeStack(inst, disp)) { 186 if (size) { 187 // panic("decoding frame size again"); 188 return true; 189 } 190 size += disp; 191 } else if (decodeSave(inst, reg, disp)) { 192 if (!ra && reg == ReturnAddressReg) { 193 CopyOut(tc, (uint8_t *)&ra, sp + disp, sizeof(Addr)); 194 if (!ra) { 195 // panic("no return address value pc=%#x\n", pc); 196 return false; 197 } 198 } 199 } 200 } 201 202 return true; 203 } 204 205#if TRACING_ON 206 void 207 StackTrace::dump() 208 { 209 StringWrap name(tc->getCpuPtr()->name()); 210 SymbolTable *symtab = tc->getSystemPtr()->kernelSymtab; 211 212 DPRINTFN("------ Stack ------\n"); 213 214 string symbol; 215 for (int i = 0, size = stack.size(); i < size; ++i) { 216 Addr addr = stack[size - i - 1]; 217 if (addr == user) 218 symbol = "user"; 219 else if (addr == console) 220 symbol = "console"; 221 else if (addr == unknown) 222 symbol = "unknown"; 223 else 224 symtab->findSymbol(addr, symbol); 225 226 DPRINTFN("%#x: %s\n", addr, symbol); 227 } 228 } 229#endif 230} | 105 106 return pd; 107 } 108 109 string 110 ProcessInfo::name(Addr ksp) const 111 { 112 Addr task = this->task(ksp); 113 if (!task) 114 return "console"; 115 116 char comm[256]; 117 CopyStringOut(tc, comm, task + name_off, sizeof(comm)); 118 if (!comm[0]) 119 return "startup"; 120 121 return comm; 122 } 123 124 StackTrace::StackTrace() 125 : tc(0), stack(64) 126 { 127 } 128 129 StackTrace::StackTrace(ThreadContext *_tc, StaticInstPtr inst) 130 : tc(0), stack(64) 131 { 132 trace(_tc, inst); 133 } 134 135 StackTrace::~StackTrace() 136 { 137 } 138 139 void 140 StackTrace::trace(ThreadContext *_tc, bool is_call) 141 { 142 } 143 144 bool 145 StackTrace::isEntry(Addr addr) 146 { 147 return false; 148 } 149 150 bool 151 StackTrace::decodeStack(MachInst inst, int &disp) 152 { 153 disp = 0; 154 return true; 155 } 156 157 bool 158 StackTrace::decodeSave(MachInst inst, int ®, int &disp) 159 { 160 reg = 0; 161 disp = 0; 162 return true; 163 } 164 165 /* 166 * Decode the function prologue for the function we're in, and note 167 * which registers are stored where, and how large the stack frame is. 168 */ 169 bool 170 StackTrace::decodePrologue(Addr sp, Addr callpc, Addr func, 171 int &size, Addr &ra) 172 { 173 size = 0; 174 ra = 0; 175 176 for (Addr pc = func; pc < callpc; pc += sizeof(MachInst)) { 177 MachInst inst; 178 CopyOut(tc, (uint8_t *)&inst, pc, sizeof(MachInst)); 179 180 int reg, disp; 181 if (decodeStack(inst, disp)) { 182 if (size) { 183 // panic("decoding frame size again"); 184 return true; 185 } 186 size += disp; 187 } else if (decodeSave(inst, reg, disp)) { 188 if (!ra && reg == ReturnAddressReg) { 189 CopyOut(tc, (uint8_t *)&ra, sp + disp, sizeof(Addr)); 190 if (!ra) { 191 // panic("no return address value pc=%#x\n", pc); 192 return false; 193 } 194 } 195 } 196 } 197 198 return true; 199 } 200 201#if TRACING_ON 202 void 203 StackTrace::dump() 204 { 205 StringWrap name(tc->getCpuPtr()->name()); 206 SymbolTable *symtab = tc->getSystemPtr()->kernelSymtab; 207 208 DPRINTFN("------ Stack ------\n"); 209 210 string symbol; 211 for (int i = 0, size = stack.size(); i < size; ++i) { 212 Addr addr = stack[size - i - 1]; 213 if (addr == user) 214 symbol = "user"; 215 else if (addr == console) 216 symbol = "console"; 217 else if (addr == unknown) 218 symbol = "unknown"; 219 else 220 symtab->findSymbol(addr, symbol); 221 222 DPRINTFN("%#x: %s\n", addr, symbol); 223 } 224 } 225#endif 226} |