stacktrace.hh revision 5567:8fc3b004b0df
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#ifndef __ARCH_ALPHA_STACKTRACE_HH__ 32#define __ARCH_ALPHA_STACKTRACE_HH__ 33 34#include "base/trace.hh" 35#include "cpu/static_inst.hh" 36 37class ThreadContext; 38 39namespace AlphaISA 40{ 41 class StackTrace; 42 43 class ProcessInfo 44 { 45 private: 46 ThreadContext *tc; 47 48 int thread_info_size; 49 int task_struct_size; 50 int task_off; 51 int pid_off; 52 int name_off; 53 54 public: 55 ProcessInfo(ThreadContext *_tc); 56 57 Addr task(Addr ksp) const; 58 int pid(Addr ksp) const; 59 std::string name(Addr ksp) const; 60 }; 61 62 class StackTrace 63 { 64 protected: 65 typedef AlphaISA::MachInst MachInst; 66 private: 67 ThreadContext *tc; 68 std::vector<Addr> stack; 69 70 private: 71 bool isEntry(Addr addr); 72 bool decodePrologue(Addr sp, Addr callpc, Addr func, int &size, Addr &ra); 73 bool decodeSave(MachInst inst, int ®, int &disp); 74 bool decodeStack(MachInst inst, int &disp); 75 76 void trace(ThreadContext *tc, bool is_call); 77 78 public: 79 StackTrace(); 80 StackTrace(ThreadContext *tc, StaticInstPtr inst); 81 ~StackTrace(); 82 83 void clear() 84 { 85 tc = 0; 86 stack.clear(); 87 } 88 89 bool valid() const { return tc != NULL; } 90 bool trace(ThreadContext *tc, StaticInstPtr inst); 91 92 public: 93 const std::vector<Addr> &getstack() const { return stack; } 94 95 static const int user = 1; 96 static const int console = 2; 97 static const int unknown = 3; 98 99#if TRACING_ON 100 private: 101 void dump(); 102 103 public: 104 void dprintf() { if (DTRACE(Stack)) dump(); } 105#else 106 public: 107 void dprintf() {} 108#endif 109 }; 110 111 inline bool 112 StackTrace::trace(ThreadContext *tc, StaticInstPtr inst) 113 { 114 if (!inst->isCall() && !inst->isReturn()) 115 return false; 116 117 if (valid()) 118 clear(); 119 120 trace(tc, !inst->isReturn()); 121 return true; 122 } 123} 124 125#endif // __ARCH_ALPHA_STACKTRACE_HH__ 126